WO2018084052A1 - Optical panel, method for producing same, and device - Google Patents

Optical panel, method for producing same, and device Download PDF

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Publication number
WO2018084052A1
WO2018084052A1 PCT/JP2017/038542 JP2017038542W WO2018084052A1 WO 2018084052 A1 WO2018084052 A1 WO 2018084052A1 JP 2017038542 W JP2017038542 W JP 2017038542W WO 2018084052 A1 WO2018084052 A1 WO 2018084052A1
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WO
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Prior art keywords
substance
region
optical panel
ionizing radiation
coating film
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Application number
PCT/JP2017/038542
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French (fr)
Japanese (ja)
Inventor
宏記 鈴木
Original Assignee
アルプス電気株式会社
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Application filed by アルプス電気株式会社 filed Critical アルプス電気株式会社
Priority to CN201780076597.XA priority Critical patent/CN110073250A/en
Priority to JP2018548959A priority patent/JP6924202B2/en
Publication of WO2018084052A1 publication Critical patent/WO2018084052A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/12—Chemical modification
    • C08J7/16—Chemical modification with polymerisable compounds
    • C08J7/18—Chemical modification with polymerisable compounds using wave energy or particle radiation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/11—Anti-reflection coatings
    • G02B1/111—Anti-reflection coatings using layers comprising organic materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements

Definitions

  • the present invention relates to an optical panel, a method for manufacturing the same, and a device including the optical panel.
  • Patent Document 1 discloses an antireflection film laminated on a transparent base material, wherein the antireflection film includes a transparent resin and fine particles dispersed in the transparent resin.
  • the average distance between the centers is 50 to 800 nm
  • the arrangement structure of the fine particles in the antireflection film is an amorphous structure
  • the average height of the protrusions on the surface of the antireflection film is 40 to
  • An antireflection film characterized in that a concavo-convex shape in the range of 500 nm is formed is disclosed.
  • the fine particles dispersed in the film create irregularities on the surface of the antireflection film, and the irregularities are scattered to prevent external light from being reflected. And in order to form this unevenness
  • the present invention provided to solve the above problems is an optical panel including a base material having translucency and an appearance layer positioned on the base material, wherein the appearance is
  • the layer includes a first region having a relatively low reflectance of incident light from the exterior layer side of the optical panel and a second region having a relatively high reflectance, and the exterior layer includes a first resin system.
  • the surface of the first region includes a projecting point group made of the first resin material and projecting in the thickness direction of the appearance layer to scatter external light.
  • the above-described optical panel according to the present invention realizes an antireflection function that scatters external light by protruding point groups made of a resin material. Therefore, the appearance layer containing fine particles is separated from the expression of the antireflection function. Therefore, it is possible to increase the degree of freedom in designing the composition of the appearance layer.
  • the first region may have a different composition in the thickness direction of the appearance layer.
  • the ratio of the content of the first resin material on the side opposite to the side facing the substrate to the content of the second resin material on the side opposite to the side facing the substrate is the first on the side facing the substrate. It may be higher than the ratio of the content of the resin material to the content of the second resin material.
  • the protruding point group may protrude from the surface of the second region.
  • the first region and the second region may have the same overall composition and may have different composition distributions in the thickness direction of the appearance layer.
  • the first region and the second region are made of the same material for forming the appearance layer, and the first region and the second region are separately formed by performing different processes. Can do.
  • the present invention provides, as another aspect, an optical panel including a base material having translucency and an appearance layer positioned on the base material.
  • the appearance layer includes a first resin material and a second resin material, and a surface of the appearance layer is made of the first resin material in at least a part of the area.
  • a protruding point group that protrudes in the thickness direction and scatters external light.
  • Such an optical panel can also increase the degree of design freedom of the composition of the appearance layer, like the optical panel including the first region and the second region.
  • the region having the protruding point group may have a different composition in the thickness direction of the appearance layer.
  • the ratio of the content of the first resin material on the side opposite to the side facing the substrate to the content of the second resin material on the side opposite to the side facing the substrate is the first on the side facing the substrate. It may be higher than the ratio of the content of the resin material to the content of the second resin material.
  • the external layer may further include a filler component, and the external layer may not include the filler component.
  • the first resin material may include a polymer of a first substance that is ionizing radiation polymerizable, and the second resin material is different from the first substance.
  • the polymer of the 2nd substance of this may be included.
  • the appearance layer may further contain a polymerization initiator.
  • a third substance having compatibility with the first substance may be included.
  • the third substance is preferably a phenol compound, more preferably a phenol compound having a melting point of 100 ° C. or less, and particularly preferably a hindered phenol compound.
  • an optical panel including a base material having translucency and an appearance layer having a surface provided with a protruding point group located on the base material and scattering external light.
  • a production method includes an ionizing radiation polymerizable first substance, an ionizing radiation polymerizable second substance different from the first substance, and a first solvent that dissolves the first substance more easily than the second substance. And applying a liquid material containing a second solvent, which is easier to dissolve the second substance than the first substance and has a boiling point higher than that of the first solvent, to one surface of the substrate.
  • a step, wherein the third step Wherein the surface comprises the projecting point group appearance layer.
  • an appearance layer having an antireflection function can be produced with few restrictions on composition, and in particular, without including a filler component.
  • the appearance layer including the protruding point group on the entire surface may be formed from the deposited coating by irradiating the entire deposited coating with the ionizing radiation. .
  • an appearance layer having an antireflection function can be manufactured on the entire surface.
  • the appearance layer includes a first region having a surface including the protruding point group and a second region having a surface not including the protruding point group, and in the third step, the precipitation is performed.
  • the first coating film region which is a partial region of the coating film
  • the first substance and the second substance located in the first coating film region are polymerized, and the first Forming a region, and heating the second coating region not irradiated with the ionizing radiation in the deposited coating to increase the surface smoothness of the second coating region following the third step.
  • the liquid material may further contain a filler component.
  • the appearance layer contains a filler component.
  • the liquid material may not include a filler component.
  • the appearance layer does not contain a filler component. In this way, it is possible to set whether or not the appearance layer contains a filler component by changing the composition of the liquid.
  • the liquid may contain a polymerization initiator.
  • the polymerization of the first substance and the second substance can be performed by irradiation with electromagnetic waves such as visible light and ultraviolet light.
  • heating may be performed so that the precipitate of the first substance in the deposited coating is melted.
  • the surface of the deposited coating is roughened by the deposit of the first substance, so that the smoothness of the surface can be improved by dissolving the deposit of the first substance.
  • the liquid material may contain a third substance having compatibility with the first substance.
  • the precipitate containing the first substance formed in the second step contains the third substance, and the precipitate containing the first substance has a lower melting point than the precipitate made of the first substance.
  • the third substance is preferably a phenol compound, more preferably a phenol compound having a melting point of 100 ° C. or less, and particularly preferably a hindered phenol compound. By including the third substance, the smoothness and optical characteristics of the second region may be increased.
  • the present invention provides, as another aspect, an apparatus including the optical panel according to the above aspect of the present invention.
  • the present invention provides a transfer body including a transfer layer having a transfer source surface.
  • the transfer layer includes a first resin material containing a polymer of an ionizing radiation polymerizable first substance, and a polymer of a second substance of ionizing radiation polymerizable different from the first substance.
  • a second resin-based material wherein the transfer source surface includes a protruding point group made of the first resin-based material and protruding in the thickness direction of the transfer layer to scatter external light, and the transfer source in the transfer layer
  • the region including the surface has a different composition in the thickness direction of the transfer layer, and the ratio of the content of the first resin material on the transfer source surface side to the content of the second resin material is the transfer layer It is higher than the ratio of the content of the first resin material on the side opposite to the base surface side to the content of the second resin material.
  • the appearance layer of the optical panel according to the present invention can be used as a transfer layer having a transfer source surface for forming a transfer surface on a transfer object.
  • the transfer body may include a third substance having compatibility with the first substance.
  • the third substance is preferably a phenol compound, more preferably a phenol compound having a melting point of 100 ° C. or less, and particularly preferably a hindered phenol compound.
  • a method for producing a transfer body including a transfer layer having a transfer source surface including protruding point groups that scatter external light includes an ionizing radiation polymerizable first substance, an ionizing radiation polymerizable second substance different from the first substance, and a first solvent that dissolves the first substance more easily than the second substance. And applying a liquid material containing a second solvent, which is easier to dissolve the second substance than the first substance and has a boiling point higher than that of the first solvent, on one surface of the base material.
  • Comprising the step of The transfer flank with a point cloud is formed.
  • the transfer layer includes a first region having a surface including the protruding point group and a second region having a surface not including the protruding point group.
  • the third step By irradiating the ionizing radiation on the first coating region that is a partial region of the deposited coating, the first substance and the second substance located in the first coating region are polymerized, The first region is formed, and subsequently to the third step, the second coating region not irradiated with the ionizing radiation in the deposited coating is heated, and the surface smoothness of the second coating region is increased.
  • a fifth scan forming the second region. Tsu may be provided with a flop. According to this manufacturing method, a surface having excellent smoothness can be provided on the surface of the transfer layer on which the transfer source surface is located.
  • the fourth step heating may be performed so that the precipitate containing the first substance in the deposition coating is melted.
  • the liquid material contains a third material having compatibility with the first material
  • the precipitate containing the first material formed in the second step contains the third material
  • the precipitate containing one substance preferably has a lower melting point than the precipitate made of the first substance.
  • the third substance is preferably a phenol compound, more preferably a phenol compound having a melting point of 100 ° C. or less, and particularly preferably a hindered phenol compound.
  • an optical panel that does not require the presence of fine particles in order to perform an antireflection function, a method for manufacturing the optical panel, and an apparatus including the optical panel.
  • FIG. 1 is a partial cross-sectional view schematically showing an optical panel according to an embodiment of the present invention.
  • an optical panel 100 includes a base material 10 having translucency and an appearance layer 20 positioned on the base material 10.
  • the material constituting the base material 10 is not limited as long as it has appropriate translucency. Examples of such materials include polyethylene terephthalate, polycarbonate, acrylic resin, and glass.
  • the base material may be comprised from the laminated structure of the some member.
  • the appearance layer 20 may be provided so as to be in direct contact with the base material 10, or even if an intervening layer exists between the base material 10 and the appearance layer 20. Good. Such an intervening layer should have an appropriate translucency similarly to the substrate 10.
  • the appearance layer 20 includes a first region R1 having a relatively low reflectance of incident light from the appearance layer 20 side of the optical panel 100 and a second region R2 having a relatively high reflectance.
  • the appearance layer 20 includes a first resin material and a second resin material.
  • the surface R1A of the first region R1 includes a protruding point group 21 that is made of the first resin material and protrudes in the thickness direction of the appearance layer 20 to scatter external light.
  • the specific composition of the first resin material and the second resin material is not limited.
  • a polymer of an ionizing radiation polymerizable substance such as an acrylic resin or an epoxy resin may be contained.
  • ionizing radiation can directly or indirectly ionize atoms and molecules such as light (including infrared rays, visible light, and ultraviolet rays), electromagnetic waves such as X-rays, and electrons. Mean radiation.
  • the composition of the first resin material and the second resin material may be different or may be common.
  • the first resin material includes a polymer of a first substance that is ionizing radiation polymerizable
  • the second resin material includes a polymer of a second substance that is ionizing radiation polymerizable that is different from the first substance.
  • the appearance layer 20 may contain a polymerization initiator.
  • the polymerization initiator include photopolymerization initiators such as ⁇ -hydroxyalkylphenone and bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide.
  • the second region R2 of the appearance layer 20 shown in FIG. 1 is composed of a layer 24 that is formed entirely of a mixed material of the first resin material and the second resin material in the thickness direction of the appearance layer 20.
  • the thickness of the appearance layer 20 is not limited. Illustratively, the thickness of the appearance layer 20 may be 0.001 ⁇ m or more and 200 ⁇ m or less, and preferably 1 ⁇ m or more and 20 ⁇ m or less.
  • the first region R1 of the outer layer 20 includes the protruding point group 21, the reflectance of incident light from the outer layer 20 side of the optical panel 100 is lower than the similar reflectance in the second region R2.
  • the first region R1 of the appearance layer 20 may have a total light reflectance defined by JIS K7375: 2008 of 10% or less and preferably 5% or less.
  • the filler component is an optional component.
  • the proportion and arrangement of the size of the first region R1 in the entire appearance layer 20 and the proportion and arrangement of the size of the second region R2 in the entire appearance layer 20 should be appropriately set according to the application.
  • the first region R1 is located in the center of the appearance layer 20 in plan view
  • the second region R2 is located so as to surround the first region R1 in plan view.
  • the appearance layer 20 may have a region other than the first region R1 and the second region R2.
  • the surface (first region surface) R1A provided with the protruding point group 21 is rougher than the surface of the second region R2.
  • the maximum height Rz of the surface roughness defined in JIS B0601: 2001 is preferably 0.5 ⁇ m or more, more preferably 1 ⁇ m or more. It is particularly preferable that the thickness is 5 ⁇ m or more.
  • the upper limit of the surface roughness of the first region surface R1A is not limited, but if the surface roughness of the first region surface R1A is excessively large, the translucency of the optical panel 100 may be lowered.
  • the total light transmittance specified in JIS 7375: 2008 is 50% or more (preferably 70% or more, more preferably 90% or more).
  • the surface roughness of the first region surface R1A should be set so as to have a degree of translucency.
  • the protruding point group 21 located on the first region surface R1A protrudes from the surface (second region surface) R2A of the second region R2.
  • the protruding point group 21 By disposing the protruding point group 21 in this way, it may be possible to increase the degree of freedom of composition in a portion other than the protruding point group 21 of the appearance layer 20.
  • the antireflection film described in Patent Document 1 has a structure in which fine particles are dispersed in a transparent resin, and by selectively removing the transparent resin, irregularities are formed on the surface, thereby preventing the reflection. A surface having a function is formed. Therefore, the surface of the region where the unevenness (corresponding to the protruding point group 21 of the appearance layer 20) is formed is inevitably depressed more than the surface of the region having no unevenness.
  • the first region R1 and the second region R2 may have the same overall composition, and the composition distribution in the thickness direction of the appearance layer 20 may be different. In this case, as will be described later, it may be possible to form the first region R1 and the second region R2 by adjusting the process from a common member. In this case, the optical panel 100 is productive. Therefore, quality stability is also excellent.
  • the composition of the first region R1 is different in the thickness direction of the external layer 20.
  • the thickness direction of the appearance layer 20 it has at least a two-layer structure of the upper layer portion 22 (including the protruding point group 21. The same applies hereinafter) and the lower layer portion 23 on the substrate 10 side.
  • the upper layer portion 22 is made of a first resin material
  • the lower layer portion 23 is made of a second resin material. In the interface region between the upper layer portion 22 and the lower layer portion 23, both portions (the upper layer portion 22 and the lower layer portion 23) may be clearly separated as shown in FIG.
  • the upper layer portion 22 may contain the first resin material as the main component and the second resin material to some extent
  • the lower layer portion 23 may contain the second resin material as the main component and the first resin material to some extent. It may be. That is, in the first region R1, the ratio of the content of the first resin material in the upper layer portion 22 (the side opposite to the side facing the base material 10) to the content of the second resin material is lower layer portion 23 (base The ratio of the content of the first resin material on the side facing the material 10 to the content of the second resin material is higher.
  • the appearance layer 20 of the optical panel 100 may further include a filler component or may not include a filler component.
  • a filler component When the appearance layer 20 contains a filler component, a whitening phenomenon may occur in the appearance layer 20 because the adhesiveness between the filler component and the matrix component (resin component) changes over time. . Therefore, it may be preferable that the appearance layer 20 does not contain a filler component.
  • the type of the filler component is not particularly limited.
  • the filler component may be composed of an inorganic material such as silica, zirconia, and titania, or may be composed of an organic material such as a melamine resin.
  • the filler component may contain both an organic material and an inorganic material.
  • the particle size distribution of the filler component is also arbitrary. On the other hand, the layer corresponding to the appearance layer described in Patent Document 1 needs to precisely control the particle size distribution of the filler component as described above.
  • the appearance layer 20 included in the optical panel according to the embodiment of the present invention described above includes the first region R1 including the protruding point group 21 and the second region R2 including no protruding point group. It is not limited. For example, the entire surface of the appearance layer 20 may include the protruding point group 21 or may include another region having optical characteristics different from those of the first region R1 and the second region R2.
  • the manufacturing method of the optical panel including the appearance layer according to the embodiment of the present invention is not limited. If the manufacturing method described below is adopted, an optical panel according to an embodiment of the present invention can be efficiently manufactured.
  • FIG. 2 is a flowchart showing a method for manufacturing an optical panel according to an embodiment of the present invention.
  • An optical panel manufacturing method according to an embodiment of the present invention includes first to third steps described below, and further includes a fourth step and a fifth step.
  • By performing the first step to the third step it is possible to manufacture an optical panel including an appearance layer having a protruding point group on the entire surface.
  • By performing the first step to the fifth step it is possible to manufacture the optical panel 100 including the appearance layer 20 composed of the first region R1 and the second region R2 as shown in FIG.
  • the case where the optical panel 100 shown in FIG. 1 is manufactured by performing the first step to the fifth step as shown in FIG. 2 is taken as a specific example.
  • FIG. 3 is a partial cross-sectional view schematically showing a manufacturing method (first step) of an optical panel according to an embodiment of the present invention.
  • FIG. 4 is a partial cross-sectional view schematically showing a method for manufacturing an optical panel (second step) according to an embodiment of the present invention.
  • FIG. 5 is a partial cross-sectional view schematically showing a method for manufacturing an optical panel (third step) according to an embodiment of the present invention.
  • FIG. 6 is a partial cross-sectional view schematically showing a method for manufacturing an optical panel (after the third step) according to an embodiment of the present invention.
  • FIG. 7 is a partial cross-sectional view schematically showing a method for manufacturing an optical panel (fourth step) according to an embodiment of the present invention.
  • FIG. 8 is a partial cross-sectional view schematically showing a method for manufacturing an optical panel (fifth step) according to an embodiment of the present invention.
  • a liquid containing a second solvent that easily dissolves the second substance and has a boiling point higher than that of one solvent is prepared.
  • the liquid material may not be composed of only the liquid, and may contain a filler component.
  • Second material polyether-based acrylate resin
  • Second solvent 1-propanol
  • Each of the first substance, the first solvent, the second substance, and the second solvent may be composed of one kind of substance, or may be composed of a mixture of plural kinds of substances.
  • the SP value of the first substance is close to the SP value of the first solvent
  • the second substance can be easily dissolved in the second solvent.
  • the first substance and the second substance are both acrylic resins such as acrylate resins and methacrylate resins
  • the internal structure is changed (as examples of the internal structure, ether structure, polyester structure, urethane Structure, phenol structure, etc.), the SP value can be changed.
  • the SP value may be changed by changing the molecular weight.
  • the first solvent and the second solvent are mixed.
  • a liquid material can be obtained by dissolving the first substance and the second substance in the mixed solvent.
  • the first substance is dissolved in the first solvent to obtain the first solution
  • the second substance is dissolved in the second solvent to obtain the second solution
  • the first solution and the second solution are mixed. You may obtain a liquid by.
  • the timing of adding the filler component is arbitrary.
  • a liquid material is applied to one surface of the substrate 10 to form a coating film 30 on the substrate 10 (S101).
  • a state in which the first substance 41 and the second substance 42 are dissolved in the mixed solvent 31 composed of the first solvent and the second solvent is shown as the first substance. 41 and the second substance 42 are represented by broken lines. Actually, the first substance 41 and the second substance 42 are not dissolved in the mixed solvent 31 in the coating film 30 and cannot be individually identified.
  • the first substance 41 is deposited on the surface of the coating film to obtain a deposited coating film 34 (S102, FIG. 4).
  • the method for volatilizing the first solvent 32 is not limited. As described above, since the first solvent 32 has a boiling point lower than that of the second solvent 33, if the coating film 30 on the substrate 10 is allowed to stand or is gently dried, the first solvent 32 starts from the mixed solvent 31 in the coating film 30. The solvent 32 is volatilized preferentially over the second solvent 33 and the content of the first solvent 32 in the coating film 30 is reduced.
  • the first substance 41 is mainly dissolved in the first solvent 32, when the amount of the first solvent 32 in the coating film 30 decreases, the amount of the first substance 41 that can be dissolved in the coating film 30 decreases. As a result, as shown in FIG. 4, the first substance 40 becomes a precipitate 41 c and is located on the coating film 30, and the deposited coating film 34 is formed on the substrate 10.
  • all the first solvents 32 contained in the mixed solvent 31 of the coating film 30 are volatilized, and all of the solvents in the deposited coating film 34 are composed of the second solvent 33, but are not limited thereto. .
  • the first solvent 32 may remain to some extent in the solvent contained in the deposited coating film 34.
  • all the 1st substances 41 contained in the coating film 30 become the precipitate 41c, it is not limited to this.
  • a certain amount of the first substance 41 may be dissolved in the solvent of the deposited coating film 34.
  • the precipitate 41c may positively contain a substance (third substance) other than the first substance 40.
  • the first substance 41 and the second substance 42 located in the region irradiated with ionizing radiation are polymerized by irradiating at least a part of the deposited coating film 34 with ionizing radiation (S103, FIG. 5, FIG. 6).
  • a mask MSK having an opening in a region corresponding to the first region R1 is used.
  • the ionizing radiation (in this case, ultraviolet light) UVL from the light source LRD is applied to the first coating region R11, which is a partial region of the deposition coating 34, located in the opening of the mask MSK.
  • the first substance 41 (at least a part of the precipitate 41c) and the second substance 42 located in the first coating film region R11 are polymerized, and the whole A first region R1 made of the first resin material and the second resin material is formed.
  • the light source LRD and the mask MSK are arranged on the back side of the base material 10 (on the side opposite to the side on which the deposited coating 34 of the base material 10 is provided), and ionizing radiation is applied from the back side of the base material 10 (in the case of FIG. 5).
  • UVL UVL
  • the first coating 41 and the second coating 42 can be polymerized by irradiating the deposition coating 34 with ionizing radiation UVL that has passed through the substrate 10.
  • the first region R1 shown in FIG. 6 has a different composition distribution in the thickness direction of the deposited coating film 34. Specifically, a portion (lower layer portion) 23 made of the second resin material formed from the second substance 42 is located on the substrate 10 side. Formed from the first substance 41, including the protruding point group 21 made of the first resin-based material formed from the precipitate 41 c of the first substance 41 on the side far from the base material 10 including the protruding point group 21. A portion (upper layer portion) 22 made of the first resin-based material is positioned.
  • the surface R1A including the protruding point group 21 of the appearance layer 20 is formed by performing the third step.
  • the third step if the entire coating film 34 is irradiated with ionizing radiation UVL without using the mask MSK, the appearance layer 20 having the protruding point group 21 on the entire surface can be formed from the coating film 34. .
  • the second coating region R12 which is a region where the ionizing radiation UVL is not irradiated on the deposited coating 34, is heated to improve the surface smoothness of the second coating region R12 (S104, FIG. 7).
  • the heating means is not limited.
  • the second coating film region R ⁇ b> 12 is heated by a heating device HD that can heat the entire appearance layer 20.
  • the first region R1 is also heated by the heating device HD, but since the polymerization reaction has already been completed in the first region R1, the shape of the protruding point group 21 is greatly changed by the heat from the heating device HD. Absent.
  • the precipitate 41c is appropriately melted.
  • the surface smoothness of the second coating film region R12 of the deposition coating 34 can be enhanced by diffusing into the deposition coating 34, while the first region R1 provided by the protruding point group 21 is roughened. It is possible to maintain the state.
  • the liquid has compatibility with the first substance 41, and the precipitate 41c It is preferable to contain a third substance that promotes dissolution in the second solvent 33.
  • the precipitate 41c formed in the second step includes the first substance 41 and the third substance.
  • the third substance is selected so that the melting point of the precipitate 41c is lower than the melting point of the first substance precipitate. From this viewpoint, it is preferable that the melting point of the third substance is low.
  • the melting point of the third substance is preferably not more than twice the melting point of the first substance 41, and more preferably not more than 1.5 times the melting point of the first substance 41. .
  • the second region R2 of the appearance layer 20 formed from the deposited coating 34 located in the second coating region R12 poor appearance due to the non-uniformity of the appearance layer 20 such as fogging and glare is unlikely to occur.
  • the cloudiness can be quantitatively evaluated by haze (JIS K7136: 2000).
  • the third substance contained in the liquid remains in the appearance layer 20. Therefore, when the outer layer 20 contains the third substance, the second region R2 of the outer layer 20 is likely to have high surface smoothness, and is also caused by non-uniformity of the outer layer 20 such as cloudiness or glare. Appearance is unlikely to occur.
  • the third substance has a functional group common to the functional group of the first substance 41, so that compatibility with the first substance 41 may be realized.
  • the third substance when the first substance 41 has a hydroxyl group, the third substance also has a hydroxyl group, whereby compatibility with the first substance 41 can be realized.
  • the third substance can be dissolved in the mixed solvent 31 or the first solvent 32 from the viewpoint of enhancing the handleability and enhancing the uniformity of the coating film 30 and the appearance layer 20.
  • the amount of addition based on the sum of the mass of the first substance 41 of the third substance and the mass of the second substance 42 is not limited. As long as the uniformity of the coating film 30 and the appearance layer 20 can be ensured, the higher the amount of the third substance added, the lower the melting point of the precipitate 41c, which is preferable.
  • Examples of the third substance having a hydroxyl group include a phenolic compound (a compound having a site in which a hydroxyl group is bonded to an aromatic ring), and a phenolic compound having a melting point of 100 ° C. or lower is a preferred example. More preferred examples include a series compound, and a hindered phenol compound having a melting point of 100 ° C. or lower can be mentioned as a particularly preferred example. As a specific example of such a hindered phenol compound having a melting point of 100 ° C. or lower, octadecyl 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate used in Examples described later is used. , Butylhydroxyanisole, 2,6-di-tert-butyl-4-methylphenol, and 4-tert-butylphenol.
  • the second coating film region R12 in which the surface smoothness is improved by the execution of the fourth step is irradiated with the ionizing radiation UVL from the light source LRD, thereby being positioned in the second coating film region R12.
  • the first substance 41 and the second substance 42 are polymerized to form a second region R2 made of the first resin material and the second resin material (S105, FIG. 8).
  • the optical panel 100 including the appearance layer 20 having the first region R1 and the second region R2 is manufactured.
  • the conditions of irradiation with ionizing radiation UVL from the light source LRD performed in the second step and the fifth step are the size of the irradiation region, the types of the first substance 41 and the second substance 42, the thickness of the deposited coating film 34, and the like. It should be set as appropriate in consideration.
  • the protruding point group 21 that directly performs the antireflection function is made of the resin-based material. Therefore, whether or not the liquid material contains the filler component and the appearance layer 20 has the antireflection function. It can be set independently whether it has or not. Therefore, the liquid material may further include a filler component or may not include a filler component.
  • the liquid material may contain a polymerization initiator.
  • the polymerization of the first substance 41 and the second substance 42 can be performed by irradiation with electromagnetic waves such as ultraviolet light.
  • electromagnetic waves such as ultraviolet light.
  • Specific examples of the polymerization initiator are as described above.
  • the fourth step heating is performed so that the precipitate 41c of the first substance 41 deposited in the deposited coating film 34 is melted, but the present invention is not limited to this.
  • the precipitation coating 34 is heated, so that the solubility of the precipitate 41 c of the first substance 41 in the second solvent 33 is increased, and the first substance 41 is dissolved in the second solvent 33, whereby the precipitate 41c may disappear and the surface smoothness of the deposited coating film 34 may increase.
  • a device includes the optical panel 100 according to the above-described embodiment of the present invention.
  • Specific examples of such devices include portable information terminals such as smartphones, mobile phones, and notebook computers; image display devices such as TVs and car navigation systems; instrument panels (instrument panels) of moving bodies such as automobiles and airplanes, console panels, and the like. Can be mentioned. Since the device according to an embodiment of the present invention includes the optical panel 100 having an antireflection function, the display image has excellent visibility.
  • the appearance layer 20 of the optical panel 100 can be used as a transfer layer having a transfer source surface for forming a transfer surface on a transfer object.
  • a transfer surface that is the reverse surface of the transfer original surface can be formed on the transfer object.
  • the transfer layer includes a first resin material containing a polymer of an ionizing radiation polymerizable first substance, and a second resin containing a polymer of an ionizing radiation polymerizable second substance different from the first substance.
  • the transfer source surface includes a resin-based material, and includes a protruding point group that is made of the first resin-based material and protrudes in the thickness direction of the transfer layer and scatters external light.
  • the composition differs in the layer thickness direction, and the ratio of the content of the first resin material on the transfer source surface side to the content of the second resin material is the first resin system on the side opposite to the transfer source surface side. It is higher than the ratio of the content of the material to the content of the second resin material.
  • the transfer body may include a third substance having compatibility with the first substance. Since the other characteristics of the transfer layer are the same as those of the appearance layer 20, the description thereof is omitted.
  • the transfer body can be manufactured by the same manufacturing method as that of the optical panel 100.
  • a manufacturing method includes an ionizing radiation polymerizable first substance, an ionizing radiation polymerizable second substance different from the first substance, a first solvent that dissolves the first substance more easily than the second substance, A liquid material containing a second solvent that is easier to dissolve the second substance than the substance and has a higher boiling point than the first solvent is applied to one surface of the substrate to form a coating film on the substrate.
  • a third step of polymerizing the first substance and the second substance located in the region irradiated with the ionizing radiation by irradiating the ionizing radiation to the region of the portion, and the transfer source including the protruding point group by the third step A surface is formed.
  • the base material does not need to have translucency.
  • the surface of the substrate on which the liquid material is applied need not be a flat surface, but a flat surface is preferable from the viewpoint of increasing the uniformity of the thickness of the coating film.
  • the substrate may not be a constituent element of the transfer body. That is, when a transfer layer having a transfer source surface is formed after the third step, the transfer layer is peeled off from the substrate, and the transfer layer alone or a surface opposite to the surface on which the transfer source surface is located is separated. A transfer body provided with the member and a transfer layer may be obtained so as to face the member.
  • the transfer layer is composed of a first region having a surface having a protruding point group and a second region having a surface not having the protruding point group.
  • heating may be performed so that the precipitate containing the first substance in the deposited coating is melted.
  • the liquid body contains a third substance having compatibility with the first substance
  • the precipitate containing the first substance formed in the second step contains the third substance
  • the precipitate containing the first substance Is preferably lower in melting point than the precipitate made of the first substance.
  • the following materials were prepared as the first substance, the first solvent, the second substance, and the second solvent.
  • the first substance and the second substance are acrylic resins, and the SP values as the substances are made different from each other by changing the structure (ether structure, polyester structure, urethane structure, phenol structure, etc.) in the inside. It is set.
  • the melting point of the first substance was 48 ° C.
  • Multifunctional acrylate resin penentaerythritol triacrylate
  • 1st solvent Methyl isobutyl ketone
  • 2nd substance Polyether-type acrylate resin (It is a urethane prepolymer which has a phenyl group, and has SP value 1.2 times with respect to SP value of polyfunctional acrylate resin.)
  • Second solvent 1-propanol (having an SP value of 1.37 times that of methyl isobutyl ketone)
  • the first substance 15g was dissolved in 50 mL of the first solvent to obtain a first solution, and the second substance 15g was dissolved in 50 mL of the second solvent to obtain a second solution.
  • 50 mL of 1st solution and 50 mL of 2nd solution were mixed, and the polymerization initiator was further added (addition amount: 2 mass% with respect to solid content), and the mixed solution was obtained.
  • the polymerization initiator used was one of the following two types (see Table 1).
  • Polymerization initiator 1 Ketone-based polymerization initiator ("Irgacure 184" manufactured by BASF)
  • Polymerization initiator 2 Phosphine oxide polymerization initiator ("Irgacure 819" manufactured by BASF)
  • the liquid material made of the obtained mixed solution was applied onto a substrate made of polycarbonate to obtain a coating film (first step).
  • the thickness of the coating film immediately after coating was about 10 ⁇ m.
  • the first solvent was generally volatilized by leaving it for about 1 minute, and the first substance in the coating film was deposited on the substrate. A deposited coating was obtained (second step).
  • a mask having an opening in an area corresponding to the view area is prepared, placed on the deposited coating film, the first coating film area exposed by the opening is irradiated with ultraviolet light from a light source, and the first coating film area is exposed.
  • a first region was formed (third step).
  • the type of light source used, illuminance (unit: mW / cm 2 ), and integrated dose (unit: mJ / cm 2 ) were as shown in Table 1.
  • the deposited coating film having a partially polymerized region (first region) is heated (80 ° C., 10 minutes), and in an unpolymerized region. A precipitate of the first substance existing in a certain second coating film region was melted to increase the surface smoothness of the second coating film region (fourth step).
  • the entire region was irradiated with ultraviolet light from a light source to form a second region from the second coating region, and an appearance layer was obtained on the substrate (fifth step).
  • the type of light source used, illuminance (unit: mW / cm 2 ), and integrated dose (unit: mJ / cm 2 ) were as shown in Table 1.
  • the roughness (the maximum height Rz of the surface roughness defined in JIS B0601: 2001) of the first region and the second region of the appearance layer obtained was measured. The results are shown in Table 2. Further, based on the difference between the roughness of the first region and the roughness of the second region, an evaluation was made as to whether or not an appearance layer partially having an antireflection function could be produced. The evaluation results are shown in Table 2. Specifically, when the maximum height Rz of the surface roughness in the first region is 0.5 ⁇ m or more larger than the maximum height Rz of the surface roughness in the roughness of the second region, the antireflection function. It was judged that an appearance layer having a part of the surface could be made ("A" in Table 2), and if the above difference was less than 0.5 ⁇ m, a part having an antireflection function was made. ("B" in Table 2).
  • the protruding point group is appropriately formed, and the protruding point group is maintained even by subsequent heating. It was confirmed. It is also confirmed that the second region formed from the second coating region can be made a smooth surface by appropriately dissolving the precipitate of the first substance formed in the second coating region by heating. It was done. That is, it was confirmed that by performing the manufacturing method according to one embodiment of the present invention, an appearance layer having an antireflection function region and a highly reflective region can be manufactured.
  • Example 6 to Example 13 25 g of the first substance used in Example 1 was dissolved in 50 mL of the first solvent to obtain a first solution, and 25 g of the second substance was dissolved in 50 mL of the second solvent to obtain a second solution. 50 mL of the first solution and 50 mL of the second solution are mixed, and further, a ketone polymerization initiator (“Irgacure 184” manufactured by BASF) is added as a polymerization initiator by 2 mass% with respect to the solid content, and the mixed solution is Obtained. To this mixed solution, the third substance was added in an addition amount (unit: mass%) shown in Table 3 based on the sum of the mass of the first substance and the mass of the second substance.
  • a ketone polymerization initiator (“Irgacure 184” manufactured by BASF)
  • the substance names and melting points of the third substances according to the respective examples are as shown in Table 3. Since the third substance has a hydroxyl group and is common to the first substance in that it has a hydroxyl group, the third substance is compatible with the first substance. Therefore, the precipitate formed using the liquid material to which the third substance is added includes the first substance and the third substance.
  • An appearance layer having a first region and a second region was formed on the substrate in the same manner as in Example 1 except that the thickness of the coating film immediately after coating was set to 14 ⁇ m using a # 12 bar coater.

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Abstract

Provided is an optical panel 100 which does not require the presence of fine particles for the achievement of an anti-reflection function. This optical panel 100 is provided with a light-transmitting substrate 10 and an exterior layer 20 that is positioned on the substrate 10. The exterior layer 20 comprises: a first region R1 that has a relatively low reflectance with respect to incident light from the exterior layer 20 side of the optical panel 100; and a second region R2 that has a relatively high reflectance with respect to the incident light. The exterior layer 20 contains a first resin-based material and a second resin-based material; and a surface R1A of the first region R1 is provided with a group 21 of projections that are formed from the first resin-based material and protrude in the thickness direction of the exterior layer so as to scatter the outside light.

Description

光学パネルおよびその製造方法ならびに機器Optical panel, method of manufacturing the same, and apparatus
　本発明は、光学パネルおよびその製造方法ならびに上記の光学パネルを備える機器に関する。 The present invention relates to an optical panel, a method for manufacturing the same, and a device including the optical panel.
　特許文献１には、透明基材上に積層される反射防止膜であって、前記反射防止膜が、透明樹脂と該透明樹脂中に分散された微粒子とからなり、前記微粒子の最近接粒子同士の中心間の平均距離が５０～８００ｎｍの範囲にあり、前記反射防止膜中の前記微粒子の配列構造がアモルファス構造であり、且つ、前記反射防止膜の表面に凸部の平均高さが４０～５００ｎｍの範囲にある凹凸形状が形成されていること、を特徴とする反射防止膜が開示されている。 Patent Document 1 discloses an antireflection film laminated on a transparent base material, wherein the antireflection film includes a transparent resin and fine particles dispersed in the transparent resin. The average distance between the centers is 50 to 800 nm, the arrangement structure of the fine particles in the antireflection film is an amorphous structure, and the average height of the protrusions on the surface of the antireflection film is 40 to An antireflection film characterized in that a concavo-convex shape in the range of 500 nm is formed is disclosed.
特開２００９－１３９７９６号公報JP 2009-139796 A
　特許文献１に記載される反射防止膜は、膜中に分散された微粒子が反射防止膜の面に凹凸を作り、この凹凸によって外光を散乱して反射防止が行われている。そして、この凹凸を形成するために、微粒子が分散するマトリックス材料を選択的に除去する加工が行われている。すなわち、特許文献１に記載される反射防止膜は、マトリックス材料とこの材料とは除去加工性が十分に異なる微粒子との存在が不可欠である。このため、反射防止膜中に微粒子を存在させることを望まない場合には、特許文献１に記載される反射防止膜を用いることができない。また、反射防止膜中に微粒子を存在させることを望む場合であっても、このマトリックス材料とは除去加工性が十分に異なる微粒子の存在が必須となるため、微粒子の選択自由度が著しく低くなる。 In the antireflection film described in Patent Document 1, the fine particles dispersed in the film create irregularities on the surface of the antireflection film, and the irregularities are scattered to prevent external light from being reflected. And in order to form this unevenness | corrugation, the process which selectively removes the matrix material in which microparticles | fine-particles disperse | distribute is performed. That is, in the antireflection film described in Patent Document 1, it is indispensable that the matrix material and fine particles having sufficiently different removal processability are present. For this reason, when it is not desired that fine particles are present in the antireflection film, the antireflection film described in Patent Document 1 cannot be used. Even when it is desired to have fine particles present in the antireflection film, the presence of fine particles having sufficiently different removal processability from this matrix material is essential, and the degree of freedom in selecting fine particles is significantly reduced. .
　本発明は、反射防止機能を果たすために微粒子の存在を必須としない光学パネルを提供することを目的とする。本発明は、かかる光学パネルの製造方法および上記の光学パネルを備える機器を提供することも目的とする。 It is an object of the present invention to provide an optical panel that does not require the presence of fine particles in order to perform an antireflection function. Another object of the present invention is to provide a method for manufacturing such an optical panel and a device including the optical panel.
　上記の課題を解決するために提供される本発明は、一態様において、透光性を備えた基材と、前記基材の上に位置する外観層とを備える光学パネルであって、前記外観層は、前記光学パネルの前記外観層側からの入射光の反射率が相対的に低い第１領域および前記反射率が相対的に高い第２領域を備え、前記外観層は、第１樹脂系材料および第２樹脂系材料を含み、前記第１領域の面は、前記第１樹脂系材料からなり前記外観層の厚さ方向に突出して外光を散乱する突出点群を備えることを特徴とする光学パネルである。 In one aspect, the present invention provided to solve the above problems is an optical panel including a base material having translucency and an appearance layer positioned on the base material, wherein the appearance is The layer includes a first region having a relatively low reflectance of incident light from the exterior layer side of the optical panel and a second region having a relatively high reflectance, and the exterior layer includes a first resin system. The surface of the first region includes a projecting point group made of the first resin material and projecting in the thickness direction of the appearance layer to scatter external light. The optical panel.
　上記の本発明に係る光学パネルは、樹脂系材料からなる突出点群によって外光を散乱させる反射防止機能を実現している。したがって、外観層が微粒子を含有することは、反射防止機能の発現と切り離されている。それゆえ、外観層の組成の設計自由度を高めることが可能である。 The above-described optical panel according to the present invention realizes an antireflection function that scatters external light by protruding point groups made of a resin material. Therefore, the appearance layer containing fine particles is separated from the expression of the antireflection function. Therefore, it is possible to increase the degree of freedom in designing the composition of the appearance layer.
　上記の光学パネルにおいて、前記第１領域は前記外観層の厚さ方向に組成が相違していてもよい。この場合において、前記基材に対向する側とは反対側における前記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比は、前記基材に対向する側における前記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比よりも高くてもよい。 In the optical panel described above, the first region may have a different composition in the thickness direction of the appearance layer. In this case, the ratio of the content of the first resin material on the side opposite to the side facing the substrate to the content of the second resin material on the side opposite to the side facing the substrate is the first on the side facing the substrate. It may be higher than the ratio of the content of the resin material to the content of the second resin material.
　上記の光学パネルにおいて、前記突出点群は、前記第２領域の面よりも突出していてもよい。 In the optical panel described above, the protruding point group may protrude from the surface of the second region.
　上記の光学パネルにおいて、前記第１領域と前記第２領域とは、全体組成が等しく、前記外観層の厚さ方向の組成分布が相違していてもよい。この場合には、第１領域と第２領域とで外観層を形成するための材料を共通なものとしておいて、異なったプロセスを実施することによって第１領域と第２領域とを作り分けることができる。 In the above-described optical panel, the first region and the second region may have the same overall composition and may have different composition distributions in the thickness direction of the appearance layer. In this case, the first region and the second region are made of the same material for forming the appearance layer, and the first region and the second region are separately formed by performing different processes. Can do.
　本発明は、他の一態様として、透光性を備えた基材と、前記基材の上に位置する外観層とを備える光学パネルを提供する。かかる光学パネルにおいては、前記外観層は、第１樹脂系材料および第２樹脂系材料を含み、前記外観層の面は、少なくとも一部の領域において、前記第１樹脂系材料からなり前記外観層の厚さ方向に突出して外光を散乱する突出点群を備える。 The present invention provides, as another aspect, an optical panel including a base material having translucency and an appearance layer positioned on the base material. In such an optical panel, the appearance layer includes a first resin material and a second resin material, and a surface of the appearance layer is made of the first resin material in at least a part of the area. A protruding point group that protrudes in the thickness direction and scatters external light.
　かかる光学パネルも、上記の第１領域および第２領域を備える光学パネルと同様に、外観層の組成の設計自由度を高めることが可能である。 Such an optical panel can also increase the degree of design freedom of the composition of the appearance layer, like the optical panel including the first region and the second region.
　上記の光学パネルにおいて、前記突出点群を備える領域は前記外観層の厚さ方向に組成が相違していてもよい。この場合において、前記基材に対向する側とは反対側における前記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比は、前記基材に対向する側における前記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比よりも高くてもよい。 In the optical panel described above, the region having the protruding point group may have a different composition in the thickness direction of the appearance layer. In this case, the ratio of the content of the first resin material on the side opposite to the side facing the substrate to the content of the second resin material on the side opposite to the side facing the substrate is the first on the side facing the substrate. It may be higher than the ratio of the content of the resin material to the content of the second resin material.
　上記の光学パネルにおいて、前記外観層はフィラー成分をさらに含んでもよいし、前記外観層はフィラー成分を含まなくてもよい。 In the above optical panel, the external layer may further include a filler component, and the external layer may not include the filler component.
　上記の光学パネルにおいて、前記第１樹脂系材料は電離放射線重合性の第１物質の重合体を含んでいてもよく、前記第２樹脂系材料は、前記第１物質とは異なる電離放射線重合性の第２物質の重合体を含んでいてもよい。この場合において、前記外観層は重合開始剤をさらに含んでいてもよい。また、前記第１物質に対する相溶性を有する第３物質を含んでいてもよい。第３物質はフェノール系化合物が好ましく、融点が１００℃以下のフェノール系化合物がさらに好ましく、ヒンダードフェノール系化合物が特に好ましい。第３物質を含むことにより、第２領域の平滑性や光学特性が高まることもある。 In the optical panel, the first resin material may include a polymer of a first substance that is ionizing radiation polymerizable, and the second resin material is different from the first substance. The polymer of the 2nd substance of this may be included. In this case, the appearance layer may further contain a polymerization initiator. Further, a third substance having compatibility with the first substance may be included. The third substance is preferably a phenol compound, more preferably a phenol compound having a melting point of 100 ° C. or less, and particularly preferably a hindered phenol compound. By including the third substance, the smoothness and optical characteristics of the second region may be increased.
　本発明は、他の一態様として、透光性を有する基材と、前記基材の上に位置して外光を散乱する突出点群を備える面を有する外観層とを備える光学パネルの製造方法を提供する。かかる製造方法は、電離放射線重合性の第１物質と、前記第１物質とは異なる電離放射線重合性の第２物質と、前記第２物質よりも前記第１物質を溶解しやすい第１溶媒と、前記第１物質よりも前記第２物質を溶解しやすく前記第１溶媒よりも沸点が高い第２溶媒と、を含有する液状体を、前記基材の一方の面に塗布して前記基材上に塗膜を形成する第１ステップ；前記塗膜に含有される前記第１溶媒を揮発させることにより、前記第１物質を含む析出体を前記塗膜の表面に位置させて析出塗膜を得る第２ステップ；および前記析出塗膜の少なくとも一部の領域に電離放射線を照射することにより、前記電離放射線が照射された領域に位置する前記第１物質および前記第２物質を重合させる第３ステップを備え、前記第３ステップにより、前記外観層の前記突出点群を備える面が形成されることを特徴とする。 As another aspect of the present invention, an optical panel including a base material having translucency and an appearance layer having a surface provided with a protruding point group located on the base material and scattering external light is provided. Provide a method. Such a production method includes an ionizing radiation polymerizable first substance, an ionizing radiation polymerizable second substance different from the first substance, and a first solvent that dissolves the first substance more easily than the second substance. And applying a liquid material containing a second solvent, which is easier to dissolve the second substance than the first substance and has a boiling point higher than that of the first solvent, to one surface of the substrate. A first step of forming a coating film thereon; by volatilizing the first solvent contained in the coating film, a precipitate containing the first substance is positioned on the surface of the coating film to form a deposited coating film A second step of obtaining; and third polymerizing the first substance and the second substance located in the area irradiated with the ionizing radiation by irradiating at least a part of the deposited coating film with the ionizing radiation. A step, wherein the third step Wherein the surface comprises the projecting point group appearance layer.
　このような製造方法により外観層を形成することにより、反射防止機能を有する外観層を、組成上の制約少なく、特にフィラー成分の含有を必須とすることなく製造することができる。 By forming an appearance layer by such a production method, an appearance layer having an antireflection function can be produced with few restrictions on composition, and in particular, without including a filler component.
　上記の製造方法において、前記第３ステップでは、前記析出塗膜の全体に前記電離放射線を照射することにより、前記突出点群を全面に備える前記外観層を前記析出塗膜から形成してもよい。かかる製造方法を採用することにより、全面に反射防止機能を有する外観層を製造することができる。 In the manufacturing method, in the third step, the appearance layer including the protruding point group on the entire surface may be formed from the deposited coating by irradiating the entire deposited coating with the ionizing radiation. . By adopting such a manufacturing method, an appearance layer having an antireflection function can be manufactured on the entire surface.
　上記の製造方法において、前記外観層は、前記突出点群を備える面を有する第１領域と、前記突出点群を備えない面を有する第２領域とからなり、前記第３ステップでは、前記析出塗膜の一部の領域である第１塗膜領域について前記電離放射線を照射することにより、前記第１塗膜領域に位置する前記第１物質および前記第２物質を重合させて、前記第１領域を形成し、前記第３ステップに続いて、前記析出塗膜における前記電離放射線が照射されていない第２塗膜領域を加熱して、前記第２塗膜領域の面平滑性を高める第４ステップ；および前記面平滑性が高められた第２塗膜領域に電離放射線を照射することにより、前記第２塗膜領域に位置する前記第１物質および前記第２物質を重合させて、前記第２領域を形成する第５ステップを備えてもよい。かかる製造方法を採用することにより、反射防止機能を有する第１領域と反射防止機能を有しない第２領域とを備える外観層を製造することができる。 In the manufacturing method, the appearance layer includes a first region having a surface including the protruding point group and a second region having a surface not including the protruding point group, and in the third step, the precipitation is performed. By irradiating the ionizing radiation with respect to the first coating film region which is a partial region of the coating film, the first substance and the second substance located in the first coating film region are polymerized, and the first Forming a region, and heating the second coating region not irradiated with the ionizing radiation in the deposited coating to increase the surface smoothness of the second coating region following the third step. Irradiating ionizing radiation to the second coating region with enhanced surface smoothness, thereby polymerizing the first substance and the second substance located in the second coating region, and The fifth step to form two regions It may be e. By adopting such a manufacturing method, it is possible to manufacture an appearance layer including a first region having an antireflection function and a second region having no antireflection function.
　上記の製造方法において、前記液状体はフィラー成分をさらに含んでいてもよい。この場合には、外観層はフィラー成分を含有するものとなる。上記の製造方法において、前記液状体はフィラー成分を含まなくてもよい。この場合には、外観層はフィラー成分を含有しないものとなる。このように、液状体の組成を変化させることによって、外観層がフィラー成分を含有するか否かを設定することができる。 In the above manufacturing method, the liquid material may further contain a filler component. In this case, the appearance layer contains a filler component. In the above manufacturing method, the liquid material may not include a filler component. In this case, the appearance layer does not contain a filler component. In this way, it is possible to set whether or not the appearance layer contains a filler component by changing the composition of the liquid.
　上記の製造方法において、前記液状体は重合開始剤を含んでいてもよい。この場合には、前記第１物質および前記第２物質の重合を、可視光や紫外光などの電磁波の照射により行うことができる。 In the above production method, the liquid may contain a polymerization initiator. In this case, the polymerization of the first substance and the second substance can be performed by irradiation with electromagnetic waves such as visible light and ultraviolet light.
　上記の製造方法において、前記第４ステップでは、前記析出塗膜における前記第１物質の析出体が溶融するように加熱を行ってもよい。析出塗膜では第１物質の析出体により析出塗膜の表面が粗面化していることから、この第１物質の析出体を溶解することにより、表面の平滑性を高めることができる。 In the above manufacturing method, in the fourth step, heating may be performed so that the precipitate of the first substance in the deposited coating is melted. In the deposited coating, the surface of the deposited coating is roughened by the deposit of the first substance, so that the smoothness of the surface can be improved by dissolving the deposit of the first substance.
　前記液状体は前記第１物質に対する相溶性を有する第３物質を含有していてもよい。この場合において、前記第２ステップで形成される前記第１物質を含む析出体は前記第３物質を含み、前記第１物質を含む析出体は前記第１物質からなる析出体よりも融点が低いことが好ましい。第３物質はフェノール系化合物が好ましく、融点が１００℃以下のフェノール系化合物がさらに好ましく、ヒンダードフェノール系化合物が特に好ましい。第３物質を含むことにより、第２領域の平滑性や光学特性が高まることもある。 The liquid material may contain a third substance having compatibility with the first substance. In this case, the precipitate containing the first substance formed in the second step contains the third substance, and the precipitate containing the first substance has a lower melting point than the precipitate made of the first substance. It is preferable. The third substance is preferably a phenol compound, more preferably a phenol compound having a melting point of 100 ° C. or less, and particularly preferably a hindered phenol compound. By including the third substance, the smoothness and optical characteristics of the second region may be increased.
　本発明は、別の一態様として、上記の本発明の一態様に係る光学パネルを備える機器を提供する。 The present invention provides, as another aspect, an apparatus including the optical panel according to the above aspect of the present invention.
　本発明は、また別の一態様として、転写元面を有する転写層を備える転写体を提供する。かかる転写体において、前記転写層は、電離放射線重合性の第１物質の重合体を含む第１樹脂系材料、および前記第１物質とは異なる電離放射線重合性の第２物質の重合体を含む第２樹脂系材料を含み、前記転写元面は、前記第１樹脂系材料からなり前記転写層の厚さ方向に突出して外光を散乱する突出点群を備え、前記転写層における前記転写元面を含む領域は、前記転写層の厚さ方向に組成が相違し、前記転写元面側における前記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比は、前記転写元面側とは反対側における前記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比よりも高い。このように、上記の本発明に係る光学パネルの外観層を、被転写物に転写面を形成するための転写元面を有する転写層として用いることが可能である。上記の転写体において、前記第１物質に対する相溶性を有する第３物質を含んでいてもよい。第３物質はフェノール系化合物が好ましく、融点が１００℃以下のフェノール系化合物がさらに好ましく、ヒンダードフェノール系化合物が特に好ましい。 As another aspect, the present invention provides a transfer body including a transfer layer having a transfer source surface. In this transfer body, the transfer layer includes a first resin material containing a polymer of an ionizing radiation polymerizable first substance, and a polymer of a second substance of ionizing radiation polymerizable different from the first substance. A second resin-based material, wherein the transfer source surface includes a protruding point group made of the first resin-based material and protruding in the thickness direction of the transfer layer to scatter external light, and the transfer source in the transfer layer The region including the surface has a different composition in the thickness direction of the transfer layer, and the ratio of the content of the first resin material on the transfer source surface side to the content of the second resin material is the transfer layer It is higher than the ratio of the content of the first resin material on the side opposite to the base surface side to the content of the second resin material. As described above, the appearance layer of the optical panel according to the present invention can be used as a transfer layer having a transfer source surface for forming a transfer surface on a transfer object. The transfer body may include a third substance having compatibility with the first substance. The third substance is preferably a phenol compound, more preferably a phenol compound having a melting point of 100 ° C. or less, and particularly preferably a hindered phenol compound.
　本発明は、また別の一態様として、外光を散乱する突出点群を備える転写元面を有する転写層を備える転写体の製造方法を提供する。かかる製造方法は、電離放射線重合性の第１物質と、前記第１物質とは異なる電離放射線重合性の第２物質と、前記第２物質よりも前記第１物質を溶解しやすい第１溶媒と、前記第１物質よりも前記第２物質を溶解しやすく前記第１溶媒よりも沸点が高い第２溶媒と、を含有する液状体を、基材の一方の面に塗布して前記基材上に塗膜を形成する第１ステップ；前記塗膜に含有される前記第１溶媒を揮発させることにより、前記第１物質を含む析出体を前記塗膜の表面に位置させて析出塗膜を得る第２ステップ；および前記析出塗膜の少なくとも一部の領域に電離放射線を照射することにより、前記電離放射線が照射された領域に位置する前記第１物質および前記第２物質を重合させる第３ステップを備え、前記第３ステップにより、前記突出点群を備える前記転写元面が形成される。 As another aspect of the present invention, there is provided a method for producing a transfer body including a transfer layer having a transfer source surface including protruding point groups that scatter external light. Such a production method includes an ionizing radiation polymerizable first substance, an ionizing radiation polymerizable second substance different from the first substance, and a first solvent that dissolves the first substance more easily than the second substance. And applying a liquid material containing a second solvent, which is easier to dissolve the second substance than the first substance and has a boiling point higher than that of the first solvent, on one surface of the base material. A first step of forming a coating film on the surface; by volatilizing the first solvent contained in the coating film, a precipitate containing the first substance is positioned on the surface of the coating film to obtain a deposited coating film A second step; and a third step of polymerizing the first substance and the second substance located in the region irradiated with the ionizing radiation by irradiating at least a partial region of the deposited coating film with the ionizing radiation. Comprising the step of The transfer flank with a point cloud is formed.
　上記の転写体の製造方法において、前記転写層は、前記突出点群を備える面を有する第１領域と、前記突出点群を備えない面を有する第２領域とからなり、前記第３ステップでは、前記析出塗膜の一部の領域である第１塗膜領域について前記電離放射線を照射することにより、前記第１塗膜領域に位置する前記第１物質および前記第２物質を重合させて、前記第１領域を形成し、前記第３ステップに続いて、前記析出塗膜における前記電離放射線が照射されていない第２塗膜領域を加熱して、前記第２塗膜領域の面平滑性を高める第４ステップ；および前記面平滑性が高められた第２塗膜領域に電離放射線を照射することにより、前記第２塗膜領域に位置する前記第１物質および前記第２物質を重合させて、前記第２領域を形成する第５ステップを備えていてもよい。かかる製造方法によれば、転写層の転写元面が位置する面に平滑性に優れる面を設けることができる。 In the method for manufacturing a transfer body, the transfer layer includes a first region having a surface including the protruding point group and a second region having a surface not including the protruding point group. In the third step, , By irradiating the ionizing radiation on the first coating region that is a partial region of the deposited coating, the first substance and the second substance located in the first coating region are polymerized, The first region is formed, and subsequently to the third step, the second coating region not irradiated with the ionizing radiation in the deposited coating is heated, and the surface smoothness of the second coating region is increased. A fourth step of enhancing; and by irradiating the second coating film region having improved surface smoothness with ionizing radiation, the first substance and the second substance located in the second coating film region are polymerized. , A fifth scan forming the second region. Tsu may be provided with a flop. According to this manufacturing method, a surface having excellent smoothness can be provided on the surface of the transfer layer on which the transfer source surface is located.
　上記の転写体の製造方法において、前記第４ステップでは、前記析出塗膜における前記第１物質を含む析出体が溶融するように加熱を行ってもよい。この場合において、前記液状体は前記第１物質に対する相溶性を有する第３物質を含有し、前記第２ステップで形成される前記第１物質を含む析出体は前記第３物質を含み、前記第１物質を含む析出体は前記第１物質からなる析出体よりも融点が低いことが好ましい。第３物質はフェノール系化合物が好ましく、融点が１００℃以下のフェノール系化合物がさらに好ましく、ヒンダードフェノール系化合物が特に好ましい。 In the method for manufacturing a transfer body, in the fourth step, heating may be performed so that the precipitate containing the first substance in the deposition coating is melted. In this case, the liquid material contains a third material having compatibility with the first material, and the precipitate containing the first material formed in the second step contains the third material, The precipitate containing one substance preferably has a lower melting point than the precipitate made of the first substance. The third substance is preferably a phenol compound, more preferably a phenol compound having a melting point of 100 ° C. or less, and particularly preferably a hindered phenol compound.
　本発明によれば、反射防止機能を果たすために微粒子の存在を必須としない光学パネル、かかる光学パネルの製造方法および上記の光学パネルを備える機器が提供される。 According to the present invention, there are provided an optical panel that does not require the presence of fine particles in order to perform an antireflection function, a method for manufacturing the optical panel, and an apparatus including the optical panel.
本発明の一実施形態に係る光学パネルの構造を模式的に示す部分断面図である。It is a fragmentary sectional view showing typically the structure of the optical panel concerning one embodiment of the present invention. 本発明の一実施形態に係る光学パネルの製造方法を示すフローチャートである。It is a flowchart which shows the manufacturing method of the optical panel which concerns on one Embodiment of this invention. 本発明の一実施形態に係る光学パネルの製造方法（第１ステップ）を模式的に示す部分断面図である。It is a fragmentary sectional view showing typically the manufacturing method (the 1st step) of the optical panel concerning one embodiment of the present invention. 本発明の一実施形態に係る光学パネルの製造方法（第２ステップ）を模式的に示す部分断面図である。It is a fragmentary sectional view showing typically the manufacturing method (2nd step) of the optical panel concerning one embodiment of the present invention. 本発明の一実施形態に係る光学パネルの製造方法（第３ステップ）を模式的に示す部分断面図である。It is a fragmentary sectional view showing typically the manufacturing method (the 3rd step) of the optical panel concerning one embodiment of the present invention. 本発明の一実施形態に係る光学パネルの製造方法（第３ステップ後）を模式的に示す部分断面図である。It is a fragmentary sectional view showing typically the manufacturing method (after the 3rd step) of the optical panel concerning one embodiment of the present invention. 本発明の一実施形態に係る光学パネルの製造方法（第４ステップ）を模式的に示す部分断面図である。It is a fragmentary sectional view showing typically the manufacturing method (the 4th step) of the optical panel concerning one embodiment of the present invention. 本発明の一実施形態に係る光学パネルの製造方法（第５ステップ）を模式的に示す部分断面図である。It is a fragmentary sectional view showing typically the manufacturing method (5th step) of the optical panel concerning one embodiment of the present invention.
　以下、本発明の実施の形態について図面を参照しつつ説明する。なお、各図面中、同様の構成要素には同一の符号を付して詳細な説明は適宜省略する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
　図１は、本発明の一実施形態に係る光学パネルを模式的に示す部分断面図である。 FIG. 1 is a partial cross-sectional view schematically showing an optical panel according to an embodiment of the present invention.
　図１に示されるように、本発明の一実施形態に係る光学パネル１００は、透光性を備えた基材１０と、基材１０の上に位置する外観層２０とを備える。 As shown in FIG. 1, an optical panel 100 according to an embodiment of the present invention includes a base material 10 having translucency and an appearance layer 20 positioned on the base material 10.
　基材１０を構成する材料は適切な透光性を有する限り、限定されない。かかる材料として、ポリエチレンテレフタレート、ポリカーボネート、アクリル樹脂、ガラスなどが例示される。基材は、複数の部材の積層構造体から構成されていてもよい。 The material constituting the base material 10 is not limited as long as it has appropriate translucency. Examples of such materials include polyethylene terephthalate, polycarbonate, acrylic resin, and glass. The base material may be comprised from the laminated structure of the some member.
　外観層２０は、図１に示されるように、基材１０に直接的に接するように設けられていてもよいし、基材１０と外観層２０との間に介在層が存在していてもよい。かかる介在層は、基材１０と同様に、適切な透光性を有するべきである。 As shown in FIG. 1, the appearance layer 20 may be provided so as to be in direct contact with the base material 10, or even if an intervening layer exists between the base material 10 and the appearance layer 20. Good. Such an intervening layer should have an appropriate translucency similarly to the substrate 10.
　外観層２０は、光学パネル１００の外観層２０側からの入射光の反射率が相対的に低い第１領域Ｒ１および反射率が相対的に高い第２領域Ｒ２を備える。外観層２０は、第１樹脂系材料および第２樹脂系材料を含む。第１領域Ｒ１の面Ｒ１Ａは、第１樹脂系材料からなり外観層２０の厚さ方向に突出して外光を散乱する突出点群２１を備える。 The appearance layer 20 includes a first region R1 having a relatively low reflectance of incident light from the appearance layer 20 side of the optical panel 100 and a second region R2 having a relatively high reflectance. The appearance layer 20 includes a first resin material and a second resin material. The surface R1A of the first region R1 includes a protruding point group 21 that is made of the first resin material and protrudes in the thickness direction of the appearance layer 20 to scatter external light.
　第１樹脂系材料および第２樹脂系材料の具体的な組成は限定されない。アクリル系樹脂、エポキシ系樹脂など電離放射線重合性の物質の重合体を含有していてもよい。本明細書において、「電離放射線」とは、光（赤外線、可視光、および紫外線を含む。）、Ｘ線等の電磁波および電子など、原子・分子を直接的または間接的に電離させることが可能な放射線を意味する。 The specific composition of the first resin material and the second resin material is not limited. A polymer of an ionizing radiation polymerizable substance such as an acrylic resin or an epoxy resin may be contained. In this specification, “ionizing radiation” can directly or indirectly ionize atoms and molecules such as light (including infrared rays, visible light, and ultraviolet rays), electromagnetic waves such as X-rays, and electrons. Mean radiation.
　第１樹脂系材料と第２樹脂系材料とは組成が異なっていてもよいし、共通であってもよい。一具体例として、第１樹脂系材料は電離放射線重合性の第１物質の重合体を含み、第２樹脂系材料は、第１物質とは異なる電離放射線重合性の第２物質の重合体を含む。この場合において、外観層２０は、重合開始剤を含有していてもよい。重合開始剤の具体例として、α‐ヒドロキシアルキルフェノン、ビス（２，４，６‐トリメチルベンゾイル）‐フェニルフォスフィンオキサイドなどの光重合開始剤が挙げられる。 The composition of the first resin material and the second resin material may be different or may be common. As a specific example, the first resin material includes a polymer of a first substance that is ionizing radiation polymerizable, and the second resin material includes a polymer of a second substance that is ionizing radiation polymerizable that is different from the first substance. Including. In this case, the appearance layer 20 may contain a polymerization initiator. Specific examples of the polymerization initiator include photopolymerization initiators such as α-hydroxyalkylphenone and bis (2,4,6-trimethylbenzoyl) -phenylphosphine oxide.
　図１に示される外観層２０の第２領域Ｒ２は、外観層２０の厚さ方向の全体が第１樹脂系材料と第２樹脂系材料との混合材料からなる層２４からなる。 The second region R2 of the appearance layer 20 shown in FIG. 1 is composed of a layer 24 that is formed entirely of a mixed material of the first resin material and the second resin material in the thickness direction of the appearance layer 20.
　外観層２０の厚さは限定されない。例示的に示せば、外観層２０の厚さは、０．００１μｍ以上２００μｍ以下であり、１μｍ以上２０μｍ以下であることが好ましい場合がある。 The thickness of the appearance layer 20 is not limited. Illustratively, the thickness of the appearance layer 20 may be 0.001 μm or more and 200 μm or less, and preferably 1 μm or more and 20 μm or less.
　外観層２０の第１領域Ｒ１は、突出点群２１を備えるため、光学パネル１００の外観層２０側からの入射光の反射率が、第２領域Ｒ２における同様の反射率よりも低い。具体的には、外観層２０の第１領域Ｒ１は、ＪＩＳ　Ｋ７３７５：２００８に規定される全光線反射率が、１０％以下であって、５％以下であることが好ましい場合がある。 Since the first region R1 of the outer layer 20 includes the protruding point group 21, the reflectance of incident light from the outer layer 20 side of the optical panel 100 is lower than the similar reflectance in the second region R2. Specifically, the first region R1 of the appearance layer 20 may have a total light reflectance defined by JIS K7375: 2008 of 10% or less and preferably 5% or less.
　後述するように、外観層２０において、フィラー成分は任意的な含有成分である。 As will be described later, in the appearance layer 20, the filler component is an optional component.
　第１領域Ｒ１の外観層２０全体における大きさの割合および配置、ならびに第２領域Ｒ２の外観層２０全体における大きさの割合および配置は、用途に応じて適宜設定されるべきものである。図１に示される光学パネル１００では、第１領域Ｒ１は、平面視で外観層２０の中央部に位置し、第１領域Ｒ１を平面視で囲むように第２領域Ｒ２が位置しているが、これに限定されない。第１領域Ｒ１および第２領域Ｒ２以外の領域を外観層２０が有していてもよい。 The proportion and arrangement of the size of the first region R1 in the entire appearance layer 20 and the proportion and arrangement of the size of the second region R2 in the entire appearance layer 20 should be appropriately set according to the application. In the optical panel 100 shown in FIG. 1, the first region R1 is located in the center of the appearance layer 20 in plan view, and the second region R2 is located so as to surround the first region R1 in plan view. However, the present invention is not limited to this. The appearance layer 20 may have a region other than the first region R1 and the second region R2.
　第１領域Ｒ１は突出点群２１において外光を散乱させることから、突出点群２１を備える面（第１領域面）Ｒ１Ａは第２領域Ｒ２の面よりも粗な面となる。具体的には、第１領域面Ｒ１Ａは、ＪＩＳ　Ｂ０６０１：２００１において規定される表面粗さの最大高さＲｚが、０．５μｍ以上であることが好ましく、１μｍ以上であることがより好ましく、１．５μｍ以上であることが特に好ましい。第１領域面Ｒ１Ａの表面粗さの上限は限定されないが、第１領域面Ｒ１Ａの表面粗さが過度に大きい場合には、光学パネル１００の透光性が低下してしまう場合がある。光学パネル１００は、基材１０がプラスチックからなる場合を例とすると、ＪＩＳ　７３７５：２００８に規定される全光線透過率が５０％以上（好ましくは７０％以上、より好ましくは９０％以上）となる程度の透光性を有するように、第１領域面Ｒ１Ａの表面粗さは設定されるべきである。 Since the first region R1 scatters external light in the protruding point group 21, the surface (first region surface) R1A provided with the protruding point group 21 is rougher than the surface of the second region R2. Specifically, in the first region surface R1A, the maximum height Rz of the surface roughness defined in JIS B0601: 2001 is preferably 0.5 μm or more, more preferably 1 μm or more. It is particularly preferable that the thickness is 5 μm or more. The upper limit of the surface roughness of the first region surface R1A is not limited, but if the surface roughness of the first region surface R1A is excessively large, the translucency of the optical panel 100 may be lowered. In the optical panel 100, taking the case where the substrate 10 is made of plastic as an example, the total light transmittance specified in JIS 7375: 2008 is 50% or more (preferably 70% or more, more preferably 90% or more). The surface roughness of the first region surface R1A should be set so as to have a degree of translucency.
　図１に示されるように、第１領域面Ｒ１Ａに位置する突出点群２１は、第２領域Ｒ２の面（第２領域面）Ｒ２Ａよりも突出している。このように突出点群２１が配置されることにより、外観層２０の突出点群２１以外の部分における組成の自由度を高めることが可能となる場合がある。例えば、特許文献１に記載される反射防止膜は、透明樹脂中に微粒子が分散された構造を有し、透明樹脂が選択的に除去されることにより、表面に凹凸を形成して、反射防止機能を有する面が形成されている。したがって、凹凸（外観層２０の突出点群２１に相当する。）が形成されている領域の表面は、凹凸を有しない領域の表面をよりも必然的に窪んでしまう。 As shown in FIG. 1, the protruding point group 21 located on the first region surface R1A protrudes from the surface (second region surface) R2A of the second region R2. By disposing the protruding point group 21 in this way, it may be possible to increase the degree of freedom of composition in a portion other than the protruding point group 21 of the appearance layer 20. For example, the antireflection film described in Patent Document 1 has a structure in which fine particles are dispersed in a transparent resin, and by selectively removing the transparent resin, irregularities are formed on the surface, thereby preventing the reflection. A surface having a function is formed. Therefore, the surface of the region where the unevenness (corresponding to the protruding point group 21 of the appearance layer 20) is formed is inevitably depressed more than the surface of the region having no unevenness.
　第１領域Ｒ１と第２領域Ｒ２とは、全体組成が等しく、外観層２０の厚さ方向の組成分布が相違していてもよい。この場合には、後述するように、共通の部材からプロセスを調整することにより第１領域Ｒ１および第２領域Ｒ２を形成することが可能な場合があり、この場合には光学パネル１００は生産性に優れ、それゆえ、品質安定性にも優れる。 The first region R1 and the second region R2 may have the same overall composition, and the composition distribution in the thickness direction of the appearance layer 20 may be different. In this case, as will be described later, it may be possible to form the first region R1 and the second region R2 by adjusting the process from a common member. In this case, the optical panel 100 is productive. Therefore, quality stability is also excellent.
　図１に示される光学パネル１００が備える外観層２０では、第１領域Ｒ１は外観層２０の厚さ方向に組成が相違する。具体的には、外観層２０の厚さ方向において、表面側の上層部分２２（突出点群２１を含む。以下同じ。）と、基材１０側の下層部分２３との少なくとも２層構造を有する。上層部分２２は第１樹脂系材料からなり、下層部分２３は第２樹脂系材料からなる。上層部分２２と下層部分２３との界面領域では、図１に示されるように両部分（上層部分２２、下層部分２３）が明確に分離していてもよいし、第１樹脂系材料および第２樹脂系材料を含む層（この層は外観層２０の厚さ方向に組成が変化していてもよい。）を有していてもよい。上層部分２２は第１樹脂系材料を主成分とし第２樹脂系材料をある程度含有していてもよいし、下層部分２３は第２樹脂系材料を主成分とし第１樹脂系材料をある程度含有していてもよい。すなわち第１領域Ｒ１では、上層部分２２（基材１０に対向する側とは反対側）における第１樹脂系材料の含有量の第２樹脂系材料の含有量に対する比は、下層部分２３（基材１０に対向する側）における記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比よりも高い。 In the external layer 20 provided in the optical panel 100 shown in FIG. 1, the composition of the first region R1 is different in the thickness direction of the external layer 20. Specifically, in the thickness direction of the appearance layer 20, it has at least a two-layer structure of the upper layer portion 22 (including the protruding point group 21. The same applies hereinafter) and the lower layer portion 23 on the substrate 10 side. . The upper layer portion 22 is made of a first resin material, and the lower layer portion 23 is made of a second resin material. In the interface region between the upper layer portion 22 and the lower layer portion 23, both portions (the upper layer portion 22 and the lower layer portion 23) may be clearly separated as shown in FIG. It may have a layer containing a resin material (this layer may have a composition changing in the thickness direction of the appearance layer 20). The upper layer portion 22 may contain the first resin material as the main component and the second resin material to some extent, and the lower layer portion 23 may contain the second resin material as the main component and the first resin material to some extent. It may be. That is, in the first region R1, the ratio of the content of the first resin material in the upper layer portion 22 (the side opposite to the side facing the base material 10) to the content of the second resin material is lower layer portion 23 (base The ratio of the content of the first resin material on the side facing the material 10 to the content of the second resin material is higher.
　本発明の一実施形態に係る光学パネル１００の外観層２０は、フィラー成分をさらに含んでいてもよいし、フィラー成分を含まなくてもよい。外観層２０がフィラー成分を含有する場合には、フィラー成分とマトリックス成分（樹脂成分）との間の密着性が経時的に変化するなどの理由により、外観層２０に白化現象が生じる場合がある。したがって、外観層２０はフィラー成分を含有しないことが好ましい場合もある。外観層２０がフィラー成分を含有する場合において、フィラー成分の種類は特に限定されない。フィラー成分はシリカ、ジルコニア、チタニアのような無機系材料から構成されていてもよいし、メラミン樹脂のような有機系材料から構成されていてもよい。フィラー成分は有機系材料と無機系材料との双方を含有していてもよい。また、フィラー成分の粒径分布も任意である。これに対し、特許文献１に記載される外観層に相当する層は、前述のように、フィラー成分の粒径分布を精密に制御する必要がある。 The appearance layer 20 of the optical panel 100 according to an embodiment of the present invention may further include a filler component or may not include a filler component. When the appearance layer 20 contains a filler component, a whitening phenomenon may occur in the appearance layer 20 because the adhesiveness between the filler component and the matrix component (resin component) changes over time. . Therefore, it may be preferable that the appearance layer 20 does not contain a filler component. When the appearance layer 20 contains a filler component, the type of the filler component is not particularly limited. The filler component may be composed of an inorganic material such as silica, zirconia, and titania, or may be composed of an organic material such as a melamine resin. The filler component may contain both an organic material and an inorganic material. The particle size distribution of the filler component is also arbitrary. On the other hand, the layer corresponding to the appearance layer described in Patent Document 1 needs to precisely control the particle size distribution of the filler component as described above.
　以上説明した本発明の一実施形態に係る光学パネルが備える外観層２０は、突出点群２１を備える第１領域Ｒ１と突出点群を備えない第２領域Ｒ２とから構成されるが、これに限定されない。例えば、外観層２０の全面が突出点群２１を備えていてもよいし、第１領域Ｒ１および第２領域Ｒ２とは光学的な特性が異なる他の領域を備えていてもよい。 The appearance layer 20 included in the optical panel according to the embodiment of the present invention described above includes the first region R1 including the protruding point group 21 and the second region R2 including no protruding point group. It is not limited. For example, the entire surface of the appearance layer 20 may include the protruding point group 21 or may include another region having optical characteristics different from those of the first region R1 and the second region R2.
　本発明の一実施形態に係る外観層を備える光学パネルの製造方法は限定されない。次に説明する製造方法を採用すれば、本発明の一実施形態に係る光学パネルを効率的に製造することができる。 The manufacturing method of the optical panel including the appearance layer according to the embodiment of the present invention is not limited. If the manufacturing method described below is adopted, an optical panel according to an embodiment of the present invention can be efficiently manufactured.
　図２は、本発明の一実施形態に係る光学パネルの製造方法を示すフローチャートである。本発明の一実施形態に係る光学パネルの製造方法は、次に説明する第１ステップから第３ステップを備え、さらに、第４ステップおよび第５ステップを備える。第１ステップから第３ステップを実施することにより、全面に突出点群を有する外観層を備える光学パネルを製造することが可能である。第１ステップから第５ステップを実施することにより、図１に示されるような第１領域Ｒ１および第２領域Ｒ２から構成される外観層２０を備える光学パネル１００を製造することができる。以下の説明では、図２に示されるように第１ステップから第５ステップを実施して、図１に示される光学パネル１００を製造する場合を具体例とする。 FIG. 2 is a flowchart showing a method for manufacturing an optical panel according to an embodiment of the present invention. An optical panel manufacturing method according to an embodiment of the present invention includes first to third steps described below, and further includes a fourth step and a fifth step. By performing the first step to the third step, it is possible to manufacture an optical panel including an appearance layer having a protruding point group on the entire surface. By performing the first step to the fifth step, it is possible to manufacture the optical panel 100 including the appearance layer 20 composed of the first region R1 and the second region R2 as shown in FIG. In the following description, the case where the optical panel 100 shown in FIG. 1 is manufactured by performing the first step to the fifth step as shown in FIG. 2 is taken as a specific example.
　図３は、本発明の一実施形態に係る光学パネルの製造方法（第１ステップ）を模式的に示す部分断面図である。図４は、本発明の一実施形態に係る光学パネルの製造方法（第２ステップ）を模式的に示す部分断面図である。図５は、本発明の一実施形態に係る光学パネルの製造方法（第３ステップ）を模式的に示す部分断面図である。図６は、本発明の一実施形態に係る光学パネルの製造方法（第３ステップ後）を模式的に示す部分断面図である。図７は、本発明の一実施形態に係る光学パネルの製造方法（第４ステップ）を模式的に示す部分断面図である。図８は、本発明の一実施形態に係る光学パネルの製造方法（第５ステップ）を模式的に示す部分断面図である。 FIG. 3 is a partial cross-sectional view schematically showing a manufacturing method (first step) of an optical panel according to an embodiment of the present invention. FIG. 4 is a partial cross-sectional view schematically showing a method for manufacturing an optical panel (second step) according to an embodiment of the present invention. FIG. 5 is a partial cross-sectional view schematically showing a method for manufacturing an optical panel (third step) according to an embodiment of the present invention. FIG. 6 is a partial cross-sectional view schematically showing a method for manufacturing an optical panel (after the third step) according to an embodiment of the present invention. FIG. 7 is a partial cross-sectional view schematically showing a method for manufacturing an optical panel (fourth step) according to an embodiment of the present invention. FIG. 8 is a partial cross-sectional view schematically showing a method for manufacturing an optical panel (fifth step) according to an embodiment of the present invention.
　まず、電離放射線重合性の第１物質と、第１物質とは異なる電離放射線重合性の第２物質と、第２物質よりも第１物質を溶解しやすい第１溶媒と、第１物質よりも前記第２物質を溶解しやすく１溶媒よりも沸点が高い第２溶媒と、を含有する液状体を用意する。この液状体の組成の具体例は次のとおりである。液状体は液体のみから構成されていなくてもよく、フィラー成分を含有していてもよい。
　　　第１物質：多官能アクリレート樹脂
　　　第１溶媒：メチルイソブチルケトン
　　　第２物質：ポリエーテル系アクリレート樹脂
　　　第２溶媒：１－プロパノール First, an ionizing radiation polymerizable first substance, an ionizing radiation polymerizable second substance different from the first substance, a first solvent that dissolves the first substance more easily than the second substance, and the first substance A liquid containing a second solvent that easily dissolves the second substance and has a boiling point higher than that of one solvent is prepared. A specific example of the composition of this liquid is as follows. The liquid material may not be composed of only the liquid, and may contain a filler component.
First material: polyfunctional acrylate resin First solvent: methyl isobutyl ketone Second material: polyether-based acrylate resin Second solvent: 1-propanol
　第１物質、第１溶媒、第２物質および第２溶媒のそれぞれは、一種類の物質から構成されていてもよいし、複数種類の物質の混合体から構成されていてもよい。第１物質のＳＰ値と第１溶媒のＳＰ値とが近くなるように設定することにより、第１物質を第１溶媒に溶解しやすくすることができる。第２物質のＳＰ値と第２溶媒のＳＰ値とが近くなるように設定することにより、第２物質を第２溶媒に溶解しやすくすることができる。例えば、第１物質および第２物質が、いずれもアクリレート樹脂やメタクリレート樹脂のようなアクリル系樹脂であっても、内部構造を変化させること（内部構造の具体例として、エーテル構造、ポリエステル構造、ウレタン構造、フェノール構造などが挙げられる。）により、ＳＰ値を変化させることができる。同じような構造を有する材料であっても、分子量を変化させることによってＳＰ値を変化させることができる場合もある。 Each of the first substance, the first solvent, the second substance, and the second solvent may be composed of one kind of substance, or may be composed of a mixture of plural kinds of substances. By setting so that the SP value of the first substance is close to the SP value of the first solvent, the first substance can be easily dissolved in the first solvent. By setting the SP value of the second substance and the SP value of the second solvent to be close to each other, the second substance can be easily dissolved in the second solvent. For example, even if the first substance and the second substance are both acrylic resins such as acrylate resins and methacrylate resins, the internal structure is changed (as examples of the internal structure, ether structure, polyester structure, urethane Structure, phenol structure, etc.), the SP value can be changed. Even in the case of a material having a similar structure, the SP value may be changed by changing the molecular weight.
　上記のように各成分のＳＰ値を設定するとともに、さらに、第１溶媒のＳＰ値と第２溶媒のＳＰ値とが大きく異ならないように設定すれば、第１溶媒と第２溶媒とが混和してなる混合溶媒に第１物質および第２物質を溶解させることにより液状体を得ることができる。あるいは、第１溶媒に第１物質を溶解させて第１溶液を得て、第２溶媒に第２物質を溶解させて第２溶液を得て、第１溶液と第２溶液とを混合することによって液状体を得てもよい。液状体がフィラー成分を含有する場合には、フィラー成分を添加するタイミングは任意である。 If the SP value of each component is set as described above, and if the SP value of the first solvent and the SP value of the second solvent are not greatly different from each other, the first solvent and the second solvent are mixed. A liquid material can be obtained by dissolving the first substance and the second substance in the mixed solvent. Alternatively, the first substance is dissolved in the first solvent to obtain the first solution, the second substance is dissolved in the second solvent to obtain the second solution, and the first solution and the second solution are mixed. You may obtain a liquid by. When the liquid contains a filler component, the timing of adding the filler component is arbitrary.
　第１ステップでは、図３に示されるように、基材１０の一方の面に液状体を塗布して基材１０上に塗膜３０を形成する（Ｓ１０１）。なお、図３では、以降の説明を容易にするために、第１溶媒および第２溶媒からなる混合溶媒３１に、第１物質４１および第２物質４２が溶解している状態を、第１物質４１および第２物質４２を破線で示すことにより表現している。実際には、第１物質４１および第２物質４２は、塗膜３０において混合溶媒３１内に溶解し、個別に識別できる状態ではない。 In the first step, as shown in FIG. 3, a liquid material is applied to one surface of the substrate 10 to form a coating film 30 on the substrate 10 (S101). In FIG. 3, in order to facilitate the following description, a state in which the first substance 41 and the second substance 42 are dissolved in the mixed solvent 31 composed of the first solvent and the second solvent is shown as the first substance. 41 and the second substance 42 are represented by broken lines. Actually, the first substance 41 and the second substance 42 are not dissolved in the mixed solvent 31 in the coating film 30 and cannot be individually identified.
　第２ステップでは、塗膜３０に含有される第１溶媒３２を揮発させることにより、第１物質４１を塗膜の表面に析出させて析出塗膜３４を得る（Ｓ１０２，図４）。第１溶媒３２の揮発方法は限定されない。前述のように、第１溶媒３２は第２溶媒３３よりも沸点が低いため、基材１０上の塗膜３０を放置する、あるいは緩やかに乾燥すると、塗膜３０内の混合溶媒３１から第１溶媒３２が第２溶媒３３よりも優先的に揮発して、塗膜３０内の第１溶媒３２の含有量が低下する。第１物質４１は主として第１溶媒３２に溶解しているため、塗膜３０内の第１溶媒３２の量が少なくなると、塗膜３０に溶解しうる第１物質４１の量が少なくなる。その結果、図４に示されるように、第１物質４０は析出体４１ｃとなって塗膜３０上に位置し、基材１０上には析出塗膜３４が形成されることになる。 In the second step, by volatilizing the first solvent 32 contained in the coating film 30, the first substance 41 is deposited on the surface of the coating film to obtain a deposited coating film 34 (S102, FIG. 4). The method for volatilizing the first solvent 32 is not limited. As described above, since the first solvent 32 has a boiling point lower than that of the second solvent 33, if the coating film 30 on the substrate 10 is allowed to stand or is gently dried, the first solvent 32 starts from the mixed solvent 31 in the coating film 30. The solvent 32 is volatilized preferentially over the second solvent 33 and the content of the first solvent 32 in the coating film 30 is reduced. Since the first substance 41 is mainly dissolved in the first solvent 32, when the amount of the first solvent 32 in the coating film 30 decreases, the amount of the first substance 41 that can be dissolved in the coating film 30 decreases. As a result, as shown in FIG. 4, the first substance 40 becomes a precipitate 41 c and is located on the coating film 30, and the deposited coating film 34 is formed on the substrate 10.
　図４では、塗膜３０の混合溶媒３１に含まれていた全ての第１溶媒３２が揮発して、析出塗膜３４における溶媒は全て第２溶媒３３から構成されているが、これに限定されない。析出塗膜３４に含まれる溶媒に第１溶媒３２がある程度残留していてもよい。また、図４では、塗膜３０に含有されていた第１物質４１の全てが析出体４１ｃとなっているが、これに限定されない。析出塗膜３４の溶媒内にある程度の第１物質４１が溶解していてもよい。また、後述するように、析出体４１ｃは第１物質４０以外の物質（第３物質）を積極的に含有する場合もある。 In FIG. 4, all the first solvents 32 contained in the mixed solvent 31 of the coating film 30 are volatilized, and all of the solvents in the deposited coating film 34 are composed of the second solvent 33, but are not limited thereto. . The first solvent 32 may remain to some extent in the solvent contained in the deposited coating film 34. Moreover, in FIG. 4, although all the 1st substances 41 contained in the coating film 30 become the precipitate 41c, it is not limited to this. A certain amount of the first substance 41 may be dissolved in the solvent of the deposited coating film 34. In addition, as will be described later, the precipitate 41c may positively contain a substance (third substance) other than the first substance 40.
　第３ステップでは、析出塗膜３４の少なくとも一部の領域に電離放射線を照射することにより、電離放射線が照射された領域に位置する第１物質４１および第２物質４２を重合させる（Ｓ１０３，図５，図６）。図５では、第１領域Ｒ１および第２領域Ｒ２を有する外観層２０を備える光学パネル１００を製造するために、第１領域Ｒ１に対応する領域に開口部を有するマスクＭＳＫが用いられている。マスクＭＳＫの開口部に位置する、析出塗膜３４の一部の領域である第１塗膜領域Ｒ１１に、光源ＬＲＤからの電離放射線（この場合は紫外光）ＵＶＬが照射される。その結果、図６に示されるように、第１塗膜領域Ｒ１１に位置する第１物質４１（少なくとも一部は析出体４１ｃとなっている。）および第２物質４２が重合して、その全体が第１樹脂系材料および第２樹脂系材料からなる第１領域Ｒ１が形成される。なお光源ＬＲＤおよびマスクＭＳＫを基材１０の裏側（基材１０の析出塗膜３４が設けられている側とは反対側）に配置して、基材１０の裏側から電離放射線（図５の場合は紫外光）ＵＶＬを照射して、基材１０を透過した電離放射線ＵＶＬを析出塗膜３４に照射して第１物質４１および第２物質４２を重合させることもできる。 In the third step, the first substance 41 and the second substance 42 located in the region irradiated with ionizing radiation are polymerized by irradiating at least a part of the deposited coating film 34 with ionizing radiation (S103, FIG. 5, FIG. 6). In FIG. 5, in order to manufacture the optical panel 100 including the appearance layer 20 having the first region R1 and the second region R2, a mask MSK having an opening in a region corresponding to the first region R1 is used. The ionizing radiation (in this case, ultraviolet light) UVL from the light source LRD is applied to the first coating region R11, which is a partial region of the deposition coating 34, located in the opening of the mask MSK. As a result, as shown in FIG. 6, the first substance 41 (at least a part of the precipitate 41c) and the second substance 42 located in the first coating film region R11 are polymerized, and the whole A first region R1 made of the first resin material and the second resin material is formed. The light source LRD and the mask MSK are arranged on the back side of the base material 10 (on the side opposite to the side on which the deposited coating 34 of the base material 10 is provided), and ionizing radiation is applied from the back side of the base material 10 (in the case of FIG. 5). Or UVL), and the first coating 41 and the second coating 42 can be polymerized by irradiating the deposition coating 34 with ionizing radiation UVL that has passed through the substrate 10.
　図６に示される第１領域Ｒ１は、析出塗膜３４の厚さ方向に異なる組成分布を有する。具体的には、基材１０側には、第２物質４２から形成された第２樹脂系材料からなる部分（下層部分）２３が位置する。突出点群２１を含む基材１０から遠位な側には、第１物質４１の析出体４１ｃから形成された第１樹脂系材料からなる突出点群２１を含んで、第１物質４１から形成された第１樹脂系材料からなる部分（上層部分）２２が位置する。 The first region R1 shown in FIG. 6 has a different composition distribution in the thickness direction of the deposited coating film 34. Specifically, a portion (lower layer portion) 23 made of the second resin material formed from the second substance 42 is located on the substrate 10 side. Formed from the first substance 41, including the protruding point group 21 made of the first resin-based material formed from the precipitate 41 c of the first substance 41 on the side far from the base material 10 including the protruding point group 21. A portion (upper layer portion) 22 made of the first resin-based material is positioned.
　このように、第３ステップを実施することにより、外観層２０の突出点群２１を備える面Ｒ１Ａが形成される。なお、第３ステップにおいて、マスクＭＳＫを用いず、析出塗膜３４の全体に電離放射線ＵＶＬを照射すれば、突出点群２１を全面に備える外観層２０を析出塗膜３４から形成することができる。 Thus, the surface R1A including the protruding point group 21 of the appearance layer 20 is formed by performing the third step. In the third step, if the entire coating film 34 is irradiated with ionizing radiation UVL without using the mask MSK, the appearance layer 20 having the protruding point group 21 on the entire surface can be formed from the coating film 34. .
　第４ステップでは、析出塗膜３４における電離放射線ＵＶＬが照射されていない領域である第２塗膜領域Ｒ１２を加熱して、第２塗膜領域Ｒ１２の面平滑性を高める（Ｓ１０４，図７）。加熱手段は限定されない。図７では、外観層２０全体を加熱可能な加熱装置ＨＤにより第２塗膜領域Ｒ１２を加熱する。この加熱装置ＨＤにより第１領域Ｒ１も加熱されるが、第１領域Ｒ１はすでに重合反応が完了しているため、加熱装置ＨＤからの熱によって、突出点群２１の形状が大きく変化することはない。第１物質４１の析出体４１ｃの融点、第１物質４１から形成された突出点群２１の軟化点、および加熱装置ＨＤの加熱温度を適切に設定することにより、析出体４１ｃは適切に溶融して析出塗膜３４内に拡散して析出塗膜３４の第２塗膜領域Ｒ１２の面平滑性を高めることができ、その一方で突出点群２１によりもたらされる第１領域Ｒ１が粗面化された状態を維持することが可能である。 In the fourth step, the second coating region R12, which is a region where the ionizing radiation UVL is not irradiated on the deposited coating 34, is heated to improve the surface smoothness of the second coating region R12 (S104, FIG. 7). . The heating means is not limited. In FIG. 7, the second coating film region R <b> 12 is heated by a heating device HD that can heat the entire appearance layer 20. The first region R1 is also heated by the heating device HD, but since the polymerization reaction has already been completed in the first region R1, the shape of the protruding point group 21 is greatly changed by the heat from the heating device HD. Absent. By appropriately setting the melting point of the precipitate 41c of the first substance 41, the softening point of the protruding point group 21 formed from the first substance 41, and the heating temperature of the heating device HD, the precipitate 41c is appropriately melted. The surface smoothness of the second coating film region R12 of the deposition coating 34 can be enhanced by diffusing into the deposition coating 34, while the first region R1 provided by the protruding point group 21 is roughened. It is possible to maintain the state.
　第２塗膜領域Ｒ１２において析出体４１ｃが溶融して析出塗膜３４内に拡散することを促進する観点から、液状体は、第１物質４１に対して相溶性を有し、析出体４１ｃの第２溶媒３３への溶解を促進する第３物質を含有していることが好ましい。液状体が第３物質を含有する場合には、第２ステップにおいて形成される析出体４１ｃは、第１物質４１と第３物質とを含む。この析出体４１ｃの融点が第１物質の析出体の融点よりも低くなるように、第３物質は選定される。この観点から、第３物質の融点は低いことが好ましい。具体的には、第３物質の融点は、第１物質４１の融点の２倍の温度以下であることが好ましく、第１物質４１の融点の１．５倍の温度以下であることがより好ましい。 From the viewpoint of promoting that the precipitate 41c melts and diffuses into the precipitate coating 34 in the second coating region R12, the liquid has compatibility with the first substance 41, and the precipitate 41c It is preferable to contain a third substance that promotes dissolution in the second solvent 33. When the liquid material contains the third substance, the precipitate 41c formed in the second step includes the first substance 41 and the third substance. The third substance is selected so that the melting point of the precipitate 41c is lower than the melting point of the first substance precipitate. From this viewpoint, it is preferable that the melting point of the third substance is low. Specifically, the melting point of the third substance is preferably not more than twice the melting point of the first substance 41, and more preferably not more than 1.5 times the melting point of the first substance 41. .
　析出体４１ｃの析出塗膜３４内への拡散が促進されることにより、第２塗膜領域Ｒ１２に位置する析出塗膜３４の面平滑性を高めることがより安定的に実現される。したがって、液状体に第３物質を含有させることにより、第２塗膜領域Ｒ１２に位置する析出塗膜３４から形成される外観層２０の第２領域Ｒ２の面平滑性を高めることが可能である。また、液状体に第３物質を含有させることにより析出体４１ｃが析出塗膜３４内により安定的に溶解するため、第２塗膜領域Ｒ１２に位置する析出塗膜３４の均一性が高まる。このため、第２塗膜領域Ｒ１２に位置する析出塗膜３４から形成される外観層２０の第２領域Ｒ２は、曇りやギラツキといった外観層２０の不均一性に起因する外観不良が生じにくい。なお、曇りはヘイズ（ヘーズ）により定量的に評価することができる（ＪＩＳ　Ｋ７１３６：２０００）。このように液状体に含有させた第３物質は、外観層２０においても残存する。したがって、外観層２０が第３物質を含有する場合には、外観層２０の第２領域Ｒ２は高い面平滑性を有しやすく、また、曇りやギラツキといった外観層２０の不均一性に起因する外観不良が生じにくい。 By promoting the diffusion of the precipitate 41c into the deposited coating film 34, it is possible to more stably realize the surface smoothness of the deposited coating film 34 located in the second coating film region R12. Therefore, it is possible to improve the surface smoothness of the second region R2 of the appearance layer 20 formed from the deposited coating 34 located in the second coating region R12 by including the third substance in the liquid. . Moreover, since the deposit 41c dissolves more stably in the deposited coating film 34 by containing the third substance in the liquid, the uniformity of the deposited coating film 34 located in the second coating film region R12 is increased. For this reason, in the second region R2 of the appearance layer 20 formed from the deposited coating 34 located in the second coating region R12, poor appearance due to the non-uniformity of the appearance layer 20 such as fogging and glare is unlikely to occur. The cloudiness can be quantitatively evaluated by haze (JIS K7136: 2000). Thus, the third substance contained in the liquid remains in the appearance layer 20. Therefore, when the outer layer 20 contains the third substance, the second region R2 of the outer layer 20 is likely to have high surface smoothness, and is also caused by non-uniformity of the outer layer 20 such as cloudiness or glare. Appearance is unlikely to occur.
　第３物質は第１物質４１が有する官能基と共通する官能基を有していることにより、第１物質４１への相溶性を実現できる場合がある。例えば、第１物質４１が水酸基を有している場合には、第３物質も水酸基を有することにより、第１物質４１への相溶性を実現することができる。また、取扱い性を高めるとともに塗膜３０や外観層２０の均一性を高める観点から、第３物質は混合溶媒３１や第１溶媒３２に溶解しうることが好ましい。第３物質の第１物質４１の質量および第２物質４２の質量の総和を基準とした添加量は限定されない。塗膜３０や外観層２０の均一性を確保できる限り、第３物質の添加量は高ければ高いほど析出体４１ｃの融点を効率的に降下させるため、好ましい。 The third substance has a functional group common to the functional group of the first substance 41, so that compatibility with the first substance 41 may be realized. For example, when the first substance 41 has a hydroxyl group, the third substance also has a hydroxyl group, whereby compatibility with the first substance 41 can be realized. Moreover, it is preferable that the third substance can be dissolved in the mixed solvent 31 or the first solvent 32 from the viewpoint of enhancing the handleability and enhancing the uniformity of the coating film 30 and the appearance layer 20. The amount of addition based on the sum of the mass of the first substance 41 of the third substance and the mass of the second substance 42 is not limited. As long as the uniformity of the coating film 30 and the appearance layer 20 can be ensured, the higher the amount of the third substance added, the lower the melting point of the precipitate 41c, which is preferable.
　上記の水酸基を有する第３物質の例として、フェノール系化合物（芳香環に水酸基が結合した部位を有する化合物）を挙げることができ、融点が１００℃以下のフェノール系化合物を好ましい例、ヒンダードフェノール系化合物をより好ましい例、融点が１００℃以下のヒンダードフェノール化合物を特に好ましい例として挙げることができる。そのような、融点が１００℃以下のヒンダードフェノール系化合物の具体例として、後述する実施例において使用された、３－（３，５－ジ－ｔｅｒｔ－ブチル－４－ヒドロキシフェニル）プロピオン酸オクタデシル、ブチルヒドロキシアニソール、２，６－ジ－ｔｅｒｔ－ブチル－４－メチルフェノール、および４－ｔｅｒｔ－ブチルフェノールが挙げられる。 Examples of the third substance having a hydroxyl group include a phenolic compound (a compound having a site in which a hydroxyl group is bonded to an aromatic ring), and a phenolic compound having a melting point of 100 ° C. or lower is a preferred example. More preferred examples include a series compound, and a hindered phenol compound having a melting point of 100 ° C. or lower can be mentioned as a particularly preferred example. As a specific example of such a hindered phenol compound having a melting point of 100 ° C. or lower, octadecyl 3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate used in Examples described later is used. , Butylhydroxyanisole, 2,6-di-tert-butyl-4-methylphenol, and 4-tert-butylphenol.
　第５ステップでは、第４ステップの実施により面平滑性が高められた状態にある第２塗膜領域Ｒ１２に光源ＬＲＤからの電離放射線ＵＶＬを照射することにより、第２塗膜領域Ｒ１２に位置する第１物質４１および第２物質４２を重合させて、第１樹脂系材料および第２樹脂系材料からなる第２領域Ｒ２を形成する（Ｓ１０５，図８）。第１ステップから第５ステップまでを実施することにより、第１領域Ｒ１および第２領域Ｒ２を有する外観層２０を備える光学パネル１００が製造される。 In the fifth step, the second coating film region R12 in which the surface smoothness is improved by the execution of the fourth step is irradiated with the ionizing radiation UVL from the light source LRD, thereby being positioned in the second coating film region R12. The first substance 41 and the second substance 42 are polymerized to form a second region R2 made of the first resin material and the second resin material (S105, FIG. 8). By performing the first step to the fifth step, the optical panel 100 including the appearance layer 20 having the first region R1 and the second region R2 is manufactured.
　第２ステップおよび第５ステップにおいて行われる光源ＬＲＤからの電離放射線ＵＶＬの照射の条件は、照射領域の大きさ、第１物質４１および第２物質４２の種類、析出塗膜３４の厚さなどを考慮して適宜設定されるべきものである。 The conditions of irradiation with ionizing radiation UVL from the light source LRD performed in the second step and the fifth step are the size of the irradiation region, the types of the first substance 41 and the second substance 42, the thickness of the deposited coating film 34, and the like. It should be set as appropriate in consideration.
　このような製造方法によれば、反射防止機能を直接的に果たす突出点群２１は樹脂系材料から構成されるため、液状体がフィラー成分を含有するか否かと外観層２０が反射防止機能を有するか否かとを独立して設定することができる。したがって、液状体は、フィラー成分をさらに含んでいてもよいし、フィラー成分を含まなくてもよい。 According to such a manufacturing method, the protruding point group 21 that directly performs the antireflection function is made of the resin-based material. Therefore, whether or not the liquid material contains the filler component and the appearance layer 20 has the antireflection function. It can be set independently whether it has or not. Therefore, the liquid material may further include a filler component or may not include a filler component.
　液状体は重合開始剤を含んでいてもよい。この場合には、第１物質４１および第２物質４２の重合を、紫外光などの電磁波の照射により行うことができる。重合開始剤の具体例は前述のとおりである。 The liquid material may contain a polymerization initiator. In this case, the polymerization of the first substance 41 and the second substance 42 can be performed by irradiation with electromagnetic waves such as ultraviolet light. Specific examples of the polymerization initiator are as described above.
　上記の製造方法では、第４ステップにおいて、析出塗膜３４において析出している第１物質４１の析出体４１ｃが溶融するように加熱が行われているが、これに限定されない。例えば、析出塗膜３４が加熱されることにより、第１物質４１の析出体４１ｃの第２溶媒３３に対する溶解度が高まって、第２溶媒３３内に第１物質４１が溶解することにより、析出体４１ｃが消失して、析出塗膜３４の面平滑度が高まってもよい。 In the above manufacturing method, in the fourth step, heating is performed so that the precipitate 41c of the first substance 41 deposited in the deposited coating film 34 is melted, but the present invention is not limited to this. For example, the precipitation coating 34 is heated, so that the solubility of the precipitate 41 c of the first substance 41 in the second solvent 33 is increased, and the first substance 41 is dissolved in the second solvent 33, whereby the precipitate 41c may disappear and the surface smoothness of the deposited coating film 34 may increase.
　本発明の一実施形態に係る機器は、上記の本発明の一実施形態に係る光学パネル１００を備える。そのような機器の具体例として、スマートフォン、携帯電話、ノートパソコン等の携帯情報端末；テレビ、カーナビゲーション等の画像表示機器；自動車、飛行機などの移動体のインパネ（計器板）、コンソールパネルなどが挙げられる。本発明の一実施形態に係る機器は、反射防止機能を有する光学パネル１００を備えるため、表示画像の視認性に優れる。 A device according to an embodiment of the present invention includes the optical panel 100 according to the above-described embodiment of the present invention. Specific examples of such devices include portable information terminals such as smartphones, mobile phones, and notebook computers; image display devices such as TVs and car navigation systems; instrument panels (instrument panels) of moving bodies such as automobiles and airplanes, console panels, and the like. Can be mentioned. Since the device according to an embodiment of the present invention includes the optical panel 100 having an antireflection function, the display image has excellent visibility.
　以上説明した本発明の一実施形態に係る光学パネル１００の外観層２０は、被転写物に転写面を形成するための転写元面を有する転写層として用いることができる。そのような転写層を備える転写体の転写元面を被転写物に押し付けることにより、転写元面の反転面となる転写面を被転写物に形成することができる。具体的には、転写層は、電離放射線重合性の第１物質の重合体を含む第１樹脂系材料、および第１物質とは異なる電離放射線重合性の第２物質の重合体を含む第２樹脂系材料を含み、転写元面は、第１樹脂系材料からなり転写層の厚さ方向に突出して外光を散乱する突出点群を備え、転写層における転写元面を含む領域は、転写層の厚さ方向に組成が相違し、転写元面側における第１樹脂系材料の含有量の第２樹脂系材料の含有量に対する比は、転写元面側とは反対側における第１樹脂系材料の含有量の第２樹脂系材料の含有量に対する比よりも高い。上記の転写体において、第１物質に対する相溶性を有する第３物質を含んでいてもよい。転写層の他の特徴は外観層２０と同様であるから、説明を省略する。 The appearance layer 20 of the optical panel 100 according to an embodiment of the present invention described above can be used as a transfer layer having a transfer source surface for forming a transfer surface on a transfer object. By pressing the transfer source surface of a transfer body having such a transfer layer against the transfer object, a transfer surface that is the reverse surface of the transfer original surface can be formed on the transfer object. Specifically, the transfer layer includes a first resin material containing a polymer of an ionizing radiation polymerizable first substance, and a second resin containing a polymer of an ionizing radiation polymerizable second substance different from the first substance. The transfer source surface includes a resin-based material, and includes a protruding point group that is made of the first resin-based material and protrudes in the thickness direction of the transfer layer and scatters external light. The composition differs in the layer thickness direction, and the ratio of the content of the first resin material on the transfer source surface side to the content of the second resin material is the first resin system on the side opposite to the transfer source surface side. It is higher than the ratio of the content of the material to the content of the second resin material. The transfer body may include a third substance having compatibility with the first substance. Since the other characteristics of the transfer layer are the same as those of the appearance layer 20, the description thereof is omitted.
　上記の転写体は、光学パネル１００の製造方法と同様の製造方法により製造することができる。かかる製造方法は、電離放射線重合性の第１物質と、第１物質とは異なる電離放射線重合性の第２物質と、第２物質よりも第１物質を溶解しやすい第１溶媒と、第１物質よりも第２物質を溶解しやすく第１溶媒よりも沸点が高い第２溶媒と、を含有する液状体を、基材の一方の面に塗布して基材上に塗膜を形成する第１ステップ；塗膜に含有される第１溶媒を揮発させることにより、第１物質を含む析出体を塗膜の表面に位置させて析出塗膜を得る第２ステップ；および析出塗膜の少なくとも一部の領域に電離放射線を照射することにより、電離放射線が照射された領域に位置する第１物質および第２物質を重合させる第３ステップを備え、第３ステップにより、突出点群を備える転写元面が形成される。この製造方法において、基材は光学パネル１００の基材とは異なり、透光性を有している必要はない。また、基材における液状体が塗布される面は平面である必要はないが、平面であることが塗膜の厚さの均一性を高める観点などから好ましい。基材は、転写体の構成要素でなくてもよい。すなわち、第３ステップ後に転写元面を備える転写層が形成されたら、この転写層を基材から剥離して、転写層単独で、あるいは転写元面が位置する面とは反対側の面を別の部材に対向配置して、その部材と転写層とを備える転写体を得てもよい。 The transfer body can be manufactured by the same manufacturing method as that of the optical panel 100. Such a manufacturing method includes an ionizing radiation polymerizable first substance, an ionizing radiation polymerizable second substance different from the first substance, a first solvent that dissolves the first substance more easily than the second substance, A liquid material containing a second solvent that is easier to dissolve the second substance than the substance and has a higher boiling point than the first solvent is applied to one surface of the substrate to form a coating film on the substrate. 1 step; a second step of obtaining a deposited coating by volatilizing the first solvent contained in the coated film to position the precipitate containing the first substance on the surface of the coated film; and at least one of the deposited coating A third step of polymerizing the first substance and the second substance located in the region irradiated with the ionizing radiation by irradiating the ionizing radiation to the region of the portion, and the transfer source including the protruding point group by the third step A surface is formed. In this manufacturing method, unlike the base material of the optical panel 100, the base material does not need to have translucency. Further, the surface of the substrate on which the liquid material is applied need not be a flat surface, but a flat surface is preferable from the viewpoint of increasing the uniformity of the thickness of the coating film. The substrate may not be a constituent element of the transfer body. That is, when a transfer layer having a transfer source surface is formed after the third step, the transfer layer is peeled off from the substrate, and the transfer layer alone or a surface opposite to the surface on which the transfer source surface is located is separated. A transfer body provided with the member and a transfer layer may be obtained so as to face the member.
　上記の転写体の製造方法において、転写層は、突出点群を備える面を有する第１領域と、突出点群を備えない面を有する第２領域とからなり、第３ステップでは、析出塗膜の一部の領域である第１塗膜領域について電離放射線を照射することにより、第１塗膜領域に位置する第１物質および第２物質を重合させて、第１領域を形成し、第３ステップに続いて、析出塗膜における電離放射線が照射されていない第２塗膜領域を加熱して、第２塗膜領域の面平滑性を高める第４ステップ；および面平滑性が高められた第２塗膜領域に電離放射線を照射することにより、第２塗膜領域に位置する第１物質および第２物質を重合させて、第２領域を形成する第５ステップを備えていてもよい。かかる製造方法によれば、転写層の転写元面が位置する面に、平滑性に優れる面を設けることができる。 In the above method for producing a transfer body, the transfer layer is composed of a first region having a surface having a protruding point group and a second region having a surface not having the protruding point group. By irradiating the first coating region, which is a partial region of the first coating region, with ionizing radiation, the first substance and the second substance located in the first coating region are polymerized to form the first region, and the third region Subsequent to the step, a fourth step of heating the second coating film region that is not irradiated with ionizing radiation in the deposited coating film to increase the surface smoothness of the second coating film region; You may provide the 5th step which superposes | polymerizes the 1st substance and 2nd substance which are located in a 2nd coating film area | region by irradiating ionizing radiation to 2 coating film area | regions, and forms a 2nd area | region. According to this manufacturing method, a surface having excellent smoothness can be provided on the surface of the transfer layer on which the transfer source surface is located.
　上記の転写層が第１領域および第２領域を有する転写体の製造方法において、第４ステップでは、析出塗膜における第１物質を含む析出体が溶融するように加熱を行ってもよい。この場合において、液状体は第１物質に対する相溶性を有する第３物質を含有し、第２ステップで形成される第１物質を含む析出体は第３物質を含み、第１物質を含む析出体は第１物質からなる析出体よりも融点が低いことが好ましい。このような製造方法を採用することにより、第２領域の面平滑性を向上させることがより安定的に実現される。転写体の製造方法における他の特徴は、光学パネル１００の製造方法と同様であるから、説明を省略する。 In the method for manufacturing a transfer body in which the transfer layer has the first region and the second region, in the fourth step, heating may be performed so that the precipitate containing the first substance in the deposited coating is melted. In this case, the liquid body contains a third substance having compatibility with the first substance, the precipitate containing the first substance formed in the second step contains the third substance, and the precipitate containing the first substance. Is preferably lower in melting point than the precipitate made of the first substance. By adopting such a manufacturing method, the surface smoothness of the second region can be improved more stably. Other features in the method of manufacturing the transfer body are the same as those of the method of manufacturing the optical panel 100, and thus description thereof is omitted.
　上記に本実施形態およびその適用例を説明したが、本発明はこれらの例に限定されるものではない。例えば、前述の各実施形態またはその適用例に対して、当業者が適宜、構成要素の追加、削除、設計変更を行ったものや、各実施形態の特徴を適宜組み合わせたものも、本発明の要旨を備えている限り、本発明の範囲に含有される。 Although the present embodiment and its application examples have been described above, the present invention is not limited to these examples. For example, those in which the person skilled in the art appropriately added, deleted, or changed the design of the above-described embodiments or application examples thereof, or combinations of the features of the embodiments as appropriate are also included in the present invention. As long as the gist is provided, it is included in the scope of the present invention.
（実施例１から実施例５および比較例１から比較例３）
　以下、実施例等により本発明をさらに具体的に説明するが、本発明の範囲はこれらの実施例等に限定されるものではない。 (Example 1 to Example 5 and Comparative Example 1 to Comparative Example 3)
EXAMPLES Hereinafter, although an Example etc. demonstrate this invention further more concretely, the scope of the present invention is not limited to these Examples etc.
　第１物質、第１溶媒、第２物質、第２溶媒として次の材料を用意した。第１物質および第２物質は、アクリル系樹脂であり、その内部に有する構造（エーテル構造、ポリエステル構造、ウレタン構造、フェノール構造など）を変化させることにより、物質としてのＳＰ値を互いに異なるように設定したものである。なお、第１物質の融点は４８℃であった。 The following materials were prepared as the first substance, the first solvent, the second substance, and the second solvent. The first substance and the second substance are acrylic resins, and the SP values as the substances are made different from each other by changing the structure (ether structure, polyester structure, urethane structure, phenol structure, etc.) in the inside. It is set. The melting point of the first substance was 48 ° C.
　　　第１物質：多官能アクリレート樹脂（ペンタエリスリトールトリアクリレート）
　　　第１溶媒：メチルイソブチルケトン
　　　第２物質：ポリエーテル系アクリレート樹脂（フェニル基を有するウレタンプレポリマーであって、多官能アクリレート樹脂のＳＰ値に対して１．２倍のＳＰ値を有する。）
　　　第２溶媒：１－プロパノール（メチルイソブチルケトンのＳＰ値に対して１．３７倍のＳＰ値を有する。） First substance: Multifunctional acrylate resin (pentaerythritol triacrylate)
1st solvent: Methyl isobutyl ketone 2nd substance: Polyether-type acrylate resin (It is a urethane prepolymer which has a phenyl group, and has SP value 1.2 times with respect to SP value of polyfunctional acrylate resin.)
Second solvent: 1-propanol (having an SP value of 1.37 times that of methyl isobutyl ketone)
　第１物質１５ｇを第１溶媒５０ｍＬに溶解して第１溶液を得て、第２物質１５ｇを第２溶媒５０ｍＬに溶解して第２溶液を得た。第１溶液５０ｍＬと第２溶液５０ｍＬとを混合して、さらに重合開始剤を添加（添加量：固形分に対して２質量％）して、混合溶液を得た。用いた重合開始剤は、次の２種類のいずれかであった（表１参照）。 The first substance 15g was dissolved in 50 mL of the first solvent to obtain a first solution, and the second substance 15g was dissolved in 50 mL of the second solvent to obtain a second solution. 50 mL of 1st solution and 50 mL of 2nd solution were mixed, and the polymerization initiator was further added (addition amount: 2 mass% with respect to solid content), and the mixed solution was obtained. The polymerization initiator used was one of the following two types (see Table 1).
　　重合開始剤１：ケトン系重合開始剤（ＢＡＳＦ社製「Ｉｒｇａｃｕｒｅ　１８４」）
　　重合開始剤２：フォスフィンオキサイド系重合開始剤（ＢＡＳＦ社製「Ｉｒｇａｃｕｒｅ　８１９」） Polymerization initiator 1: Ketone-based polymerization initiator ("Irgacure 184" manufactured by BASF)
Polymerization initiator 2: Phosphine oxide polymerization initiator ("Irgacure 819" manufactured by BASF)
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　得られた混合溶液からなる液状体をポリカーボネートからなる基材上に塗布して、塗膜を得た（第１ステップ）。塗布直後の塗膜の厚さは約１０μｍであった。 The liquid material made of the obtained mixed solution was applied onto a substrate made of polycarbonate to obtain a coating film (first step). The thickness of the coating film immediately after coating was about 10 μm.
　基材上の塗膜を大気中（室温２５℃）に放置したところ、１分間程度の放置により、第１溶媒がおおむね揮発して、塗膜内の第１物質が析出し、基材上に析出塗膜が得られた（第２ステップ）。 When the coating film on the substrate was left in the atmosphere (room temperature 25 ° C.), the first solvent was generally volatilized by leaving it for about 1 minute, and the first substance in the coating film was deposited on the substrate. A deposited coating was obtained (second step).
　ビューエリアに相当する領域に開口部を有するマスクを用意し、析出塗膜の上に配置し、開口部により露出する第１塗膜領域に光源から紫外光を照射し、第１塗膜領域から第１領域を形成した（第３ステップ）。用いた光源の種類、照度（単位：ｍＷ／ｃｍ２）および積算照射量（単位：ｍＪ／ｃｍ２）は表１に示したとおりであった。 A mask having an opening in an area corresponding to the view area is prepared, placed on the deposited coating film, the first coating film area exposed by the opening is irradiated with ultraviolet light from a light source, and the first coating film area is exposed. A first region was formed (third step). The type of light source used, illuminance (unit: mW / cm 2 ), and integrated dose (unit: mJ / cm 2 ) were as shown in Table 1.
　マスクを除去して、全域を照射可能な赤外線ランプを用いて、部分的に重合した領域（第１領域）を有する析出塗膜を加熱（８０℃、１０分間）して、未重合の領域である第２塗膜領域に存在する第１物質の析出体を溶融して、第２塗膜領域の面平滑度を高めた（第４ステップ）。 Using an infrared lamp capable of irradiating the entire area after removing the mask, the deposited coating film having a partially polymerized region (first region) is heated (80 ° C., 10 minutes), and in an unpolymerized region. A precipitate of the first substance existing in a certain second coating film region was melted to increase the surface smoothness of the second coating film region (fourth step).
　続いて、光源から紫外光を全域に照射して、第２塗膜領域から第２領域を形成し、基材上に外観層を得た（第５ステップ）。用いた光源の種類、照度（単位：ｍＷ／ｃｍ２）および積算照射量（単位：ｍＪ／ｃｍ２）は表１に示したとおりであった。 Subsequently, the entire region was irradiated with ultraviolet light from a light source to form a second region from the second coating region, and an appearance layer was obtained on the substrate (fifth step). The type of light source used, illuminance (unit: mW / cm 2 ), and integrated dose (unit: mJ / cm 2 ) were as shown in Table 1.
　得られた外観層の第１領域および第２領域の粗さ（ＪＩＳ　Ｂ０６０１：２００１において規定される表面粗さの最大高さＲｚ）を測定した。その結果を表２に示す。また、第１領域の粗さと第２領域の粗さとの相違に基づいて、反射防止機能を部分的に有する外観層を作ることができたか否かの評価を行った。評価結果を表２に示す。具体的には、第１領域における上記の表面粗さの最大高さＲｚが第２領域の粗さにおける上記の表面粗さの最大高さＲｚよりも０．５μｍ以上大きい場合に、反射防止機能を部分的に有する外観層を作ることができた（表２中「Ａ」）と判断し、上記の差が０．５μｍ未満の場合には反射防止機能を部分的に有する外観層を作ることができなかった（表２中「Ｂ」）と判断した。 The roughness (the maximum height Rz of the surface roughness defined in JIS B0601: 2001) of the first region and the second region of the appearance layer obtained was measured. The results are shown in Table 2. Further, based on the difference between the roughness of the first region and the roughness of the second region, an evaluation was made as to whether or not an appearance layer partially having an antireflection function could be produced. The evaluation results are shown in Table 2. Specifically, when the maximum height Rz of the surface roughness in the first region is 0.5 μm or more larger than the maximum height Rz of the surface roughness in the roughness of the second region, the antireflection function. It was judged that an appearance layer having a part of the surface could be made ("A" in Table 2), and if the above difference was less than 0.5 μm, a part having an antireflection function was made. ("B" in Table 2).
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
　表２に示されるように、第１塗膜領域への電離放射線の積算照射量を適切に設定することにより、突出点群が適切に形成され、その後の加熱によっても突出点群が維持されることが確認された。また、第２塗膜領域に形成された第１物質の析出体を加熱により適切に溶解することによって、第２塗膜領域から形成された第２領域を平滑な面とすることができることも確認された。すなわち、本発明の一実施形態に係る製造方法を実施することにより、反射防止機能を有する領域と反射性の高い領域とを有する外観層を製造することができることが確認された。 As shown in Table 2, by appropriately setting the integrated dose of ionizing radiation to the first coating film region, the protruding point group is appropriately formed, and the protruding point group is maintained even by subsequent heating. It was confirmed. It is also confirmed that the second region formed from the second coating region can be made a smooth surface by appropriately dissolving the precipitate of the first substance formed in the second coating region by heating. It was done. That is, it was confirmed that by performing the manufacturing method according to one embodiment of the present invention, an appearance layer having an antireflection function region and a highly reflective region can be manufactured.
（実施例６から実施例１３）
　実施例１で用いた第１物質２５ｇを第１溶媒５０ｍＬに溶解して第１溶液を得て、第２物質２５ｇを第２溶媒５０ｍＬに溶解して第２溶液を得た。第１溶液５０ｍＬと第２溶液５０ｍＬとを混合して、さらに重合開始剤としてケトン系重合開始剤（ＢＡＳＦ社製「Ｉｒｇａｃｕｒｅ　１８４」）を固形分に対して２質量％添加して、混合溶液を得た。
　この混合溶液に、第１物質の質量および第２物質の質量の総和を基準とした表３に示される添加量（単位：質量％）で、第３物質を添加した。各実施例に係る第３物質の物質名および融点は表３に示したとおりである。第３物質はいずれも水酸基を有し、水酸基を有する点で第１物質と共通するため、第３物質は第１物質に相溶性を有する。それゆえ、第３物質が添加された液状体を用いて形成される析出体は、第１物質および第３物質を含む。＃１２バーコーターを用いて塗布直後の塗膜の厚さを１４μｍとしたこと以外は、実施例１と同様にして、第１領域および第２領域を有する外観層を基材上に形成した。 (Example 6 to Example 13)
25 g of the first substance used in Example 1 was dissolved in 50 mL of the first solvent to obtain a first solution, and 25 g of the second substance was dissolved in 50 mL of the second solvent to obtain a second solution. 50 mL of the first solution and 50 mL of the second solution are mixed, and further, a ketone polymerization initiator (“Irgacure 184” manufactured by BASF) is added as a polymerization initiator by 2 mass% with respect to the solid content, and the mixed solution is Obtained.
To this mixed solution, the third substance was added in an addition amount (unit: mass%) shown in Table 3 based on the sum of the mass of the first substance and the mass of the second substance. The substance names and melting points of the third substances according to the respective examples are as shown in Table 3. Since the third substance has a hydroxyl group and is common to the first substance in that it has a hydroxyl group, the third substance is compatible with the first substance. Therefore, the precipitate formed using the liquid material to which the third substance is added includes the first substance and the third substance. An appearance layer having a first region and a second region was formed on the substrate in the same manner as in Example 1 except that the thickness of the coating film immediately after coating was set to 14 μm using a # 12 bar coater.
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
　得られた外観層の第１領域および第２領域について、次の評価を行った。
（１）ＪＩＳ　Ｂ０６０１：２００１において規定される表面粗さの最大高さＲｚ（単位：μｍ）
（２）ＪＩＳ　Ｋ７３７５：２００８において規定される全光線透過率（単位：％）
（３）ＪＩＳ　Ｋ７１３６：２０００において規定されるヘーズ（ヘイズ、単位：％）
　第２領域については、ギラツキの程度についてさらに評価した。
（４）ギラツキ
　一般的な外観検査用の蛍光灯が照射された外観層を目視して、次の３水準で評価した。
　　（Ａ）ギラツキなし
　　（Ｂ）軽度のギラツキあり
　　（Ｃ）明確なギラツキあり
　評価結果を表４に示す。 The following evaluation was performed about the 1st field and the 2nd field of the appearance layer which were obtained.
(1) Maximum height Rz (unit: μm) of the surface roughness specified in JIS B0601: 2001
(2) Total light transmittance (unit:%) specified in JIS K7375: 2008
(3) Haze specified in JIS K7136: 2000 (haze, unit:%)
For the second region, the degree of glare was further evaluated.
(4) Glare The appearance layer irradiated with a fluorescent lamp for general appearance inspection was visually observed and evaluated according to the following three levels.
(A) No glare (B) Mild glare (C) Clear glare Evaluation results are shown in Table 4.
Figure JPOXMLDOC01-appb-T000004
Figure JPOXMLDOC01-appb-T000004
　表４に示されるように、第３物質を添加した場合（実施例６から実施例１２）には、第３物質を添加しない場合（実施例１３）に比べて、第２領域の最大高さＲｚが小さくなり、面平滑性が向上した。また、第３物質を添加することにより、ヘイズが低減される傾向があることおよびギラツキが生じにくくなる傾向があることが確認された。この傾向は、添加した第３物質の融点が低く、第３物質の添加量が多いほど顕著であった。なお、第１領域および第２領域のいずれについても、第３物質を添加したことによる透過率の変化はほとんど認められなかった。第１領域において、第３物質を添加したことにより最大高さＲｚおよびヘイズが低減する傾向がみられたが、その程度は、いずれも第３物質を添加しない場合（実施例１３）に対する変化率で１０％以下であった。 As shown in Table 4, when the third substance is added (Example 6 to Example 12), the maximum height of the second region is higher than when the third substance is not added (Example 13). Rz was reduced and the surface smoothness was improved. Moreover, it was confirmed that by adding the third substance, haze tends to be reduced and glare is less likely to occur. This tendency was more remarkable as the melting point of the added third substance was lower and the amount of the third substance added was larger. In both the first region and the second region, almost no change in transmittance due to the addition of the third substance was observed. In the first region, there was a tendency that the maximum height Rz and haze were reduced by adding the third substance, but the degree of change was the rate of change compared to the case where the third substance was not added (Example 13). 10% or less.
　１００　光学パネル
　１０　基材
　２０　外観層
　Ｒ１　第１領域
　Ｒ２　第２領域
　Ｒ１Ａ　第１領域Ｒ１の面（第１領域面）
　Ｒ２Ａ　第２領域Ｒ２の面（第２領域面）
　２１　突出点群
　２２　上層部分
　２３　下層部分
　２４　混合樹脂系材料からなる層
　Ｓ１０１　第１ステップ
　Ｓ１０２　第２ステップ
　Ｓ１０３　第３ステップ
　Ｓ１０４　第４ステップ
　Ｓ１０５　第５ステップ
　３０　塗膜
　３１　混合溶媒
　４１　第１物質
　４２　第２物質
　３２　第１溶媒
　３３　第２溶媒
　３４　析出塗膜
　４１ｃ　析出体
　ＬＲＤ　光源
　ＵＶＬ　電離放射線（紫外光）
　ＭＳＫ　マスク
　ＨＤ　加熱装置
　Ｒ１１　第１塗膜領域
　Ｒ１２　第２塗膜領域 DESCRIPTION OF SYMBOLS 100 Optical panel 10 Base material 20 External appearance layer R1 1st area | region R2 2nd area | region R1A Surface (1st area | region surface) of 1st area | region R1
R2A Surface of second region R2 (second region surface)
21 Projection point group 22 Upper layer part 23 Lower layer part 24 Layer made of mixed resin material S101 1st step S102 2nd step S103 3rd step S104 4th step S105 5th step 30 Coating film 31 Mixed solvent 41 1st substance 42 2nd 2 substances 32 1st solvent 33 2nd solvent 34 Precipitation coating 41c Precipitate LRD Light source UVL Ionizing radiation (ultraviolet light)
MSK Mask HD Heating device R11 First coating area R12 Second coating area

Claims (29)

  1. 　透光性を備えた基材と、前記基材の上に位置する外観層とを備える光学パネルであって、
    　前記外観層は、前記光学パネルの前記外観層側からの入射光の反射率が相対的に低い第１領域および前記反射率が相対的に高い第２領域を備え、
    　前記外観層は、第１樹脂系材料および第２樹脂系材料を含み、
    　前記第１領域の面は、前記第１樹脂系材料からなり前記外観層の厚さ方向に突出して外光を散乱する突出点群を備えること
    を特徴とする光学パネル。     An optical panel comprising a base material having translucency and an appearance layer positioned on the base material,
    The exterior layer includes a first region having a relatively low reflectance of incident light from the exterior layer side of the optical panel and a second region having a relatively high reflectance.
    The appearance layer includes a first resin material and a second resin material,
    The surface of said 1st area | region is provided with the protrusion point group which consists of a said 1st resin type material, protrudes in the thickness direction of the said external appearance layer, and scatters external light.
  2. 　前記第１領域は前記外観層の厚さ方向に組成が相違し、前記基材に対向する側とは反対側における前記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比は、前記基材に対向する側における前記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比よりも高い、請求項１に記載の光学パネル。 The composition of the first region is different in the thickness direction of the appearance layer, and the content of the first resin material on the side opposite to the side facing the substrate is relative to the content of the second resin material. 2. The optical panel according to claim 1, wherein the ratio is higher than the ratio of the content of the first resin material on the side facing the substrate to the content of the second resin material.
  3. 　前記突出点群は、前記第２領域の面よりも突出している、請求項１または２に記載の光学パネル。 The optical panel according to claim 1 or 2, wherein the protruding point group protrudes from a surface of the second region.
  4. 　前記第１領域と前記第２領域とは、全体組成が等しく、前記外観層の厚さ方向の組成分布が相違する、請求項１から３のいずれか一項に記載の光学パネル。 The optical panel according to any one of claims 1 to 3, wherein the first region and the second region have the same overall composition and a different composition distribution in the thickness direction of the appearance layer.
  5. 　透光性を備えた基材と、前記基材の上に位置する外観層とを備える光学パネルであって、
    　前記外観層は、第１樹脂系材料および第２樹脂系材料を含み、
    　前記外観層の面は、少なくとも一部の領域において、前記第１樹脂系材料からなり前記外観層の厚さ方向に突出して外光を散乱する突出点群を備えること
    を特徴とする光学パネル。     An optical panel comprising a base material having translucency and an appearance layer positioned on the base material,
    The appearance layer includes a first resin material and a second resin material,
    The optical panel is characterized in that at least a part of the surface of the external layer includes a protruding point group made of the first resin material and protruding in the thickness direction of the external layer to scatter external light.
  6. 　前記突出点群を備える領域は前記外観層の厚さ方向に組成が相違し、前記基材に対向する側とは反対側における前記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比は、前記基材に対向する側における前記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比よりも高い、請求項５に記載の光学パネル。 The region having the protruding point group has a different composition in the thickness direction of the appearance layer, and the second resin material of the content of the first resin material on the side opposite to the side facing the base material. The optical panel according to claim 5, wherein a ratio to the content is higher than a ratio of the content of the first resin material on the side facing the base material to the content of the second resin material.
  7. 　前記外観層はフィラー成分をさらに含む、請求項１から６のいずれか一項に記載の光学パネル。 The optical panel according to any one of claims 1 to 6, wherein the appearance layer further includes a filler component.
  8. 　前記外観層はフィラー成分を含まない、請求項１から６のいずれか一項に記載の光学パネル。 The optical panel according to any one of claims 1 to 6, wherein the appearance layer does not include a filler component.
  9. 　前記第１樹脂系材料は電離放射線重合性の第１物質の重合体を含み、前記第２樹脂系材料は、前記第１物質とは異なる電離放射線重合性の第２物質の重合体を含む、請求項１から８のいずれか一項に記載の光学パネル。 The first resin-based material includes a polymer of a first substance that is ionizing radiation-polymerizable, and the second resin-based material includes a polymer of a second substance that is ionizing radiation-polymerizable different from the first substance. The optical panel according to claim 1.
  10. 　前記外観層は重合開始剤を含む、請求項９に記載の光学パネル。 The optical panel according to claim 9, wherein the appearance layer includes a polymerization initiator.
  11. 　前記外観層は前記第１物質に対する相溶性を有する第３物質を含む、請求項９または１０に記載の光学パネル。 The optical panel according to claim 9 or 10, wherein the external layer includes a third material having compatibility with the first material.
  12. 　前記第３物質がフェノール系化合物である、請求項１１に記載の光学パネル。 The optical panel according to claim 11, wherein the third substance is a phenol compound.
  13. 　透光性を有する基材と、前記基材の上に位置して外光を散乱する突出点群を備える面を有する外観層とを備える光学パネルの製造方法であって、
    　電離放射線重合性の第１物質と、前記第１物質とは異なる電離放射線重合性の第２物質と、前記第２物質よりも前記第１物質を溶解しやすい第１溶媒と、前記第１物質よりも前記第２物質を溶解しやすく前記第１溶媒よりも沸点が高い第２溶媒と、を含有する液状体を、前記基材の一方の面に塗布して前記基材上に塗膜を形成する第１ステップ；
    　前記塗膜に含有される前記第１溶媒を揮発させることにより、前記第１物質を含む析出体を前記塗膜の表面に位置させて析出塗膜を得る第２ステップ；および
    　前記析出塗膜の少なくとも一部の領域に電離放射線を照射することにより、前記電離放射線が照射された領域に位置する前記第１物質および前記第２物質を重合させる第３ステップ
    を備え、
    　前記第３ステップにより、前記外観層の前記突出点群を備える面が形成されることを特徴とする光学パネルの製造方法。     A method of manufacturing an optical panel comprising a base material having translucency and an appearance layer having a surface provided with a protruding point group located on the base material and scattering external light,
    An ionizing radiation polymerizable first substance, an ionizing radiation polymerizable second substance different from the first substance, a first solvent that dissolves the first substance more easily than the second substance, and the first substance A liquid material containing a second solvent, which is easier to dissolve the second substance and has a boiling point higher than that of the first solvent, is applied to one surface of the base material to form a coating film on the base material. A first step of forming;
    A second step of obtaining a deposited coating film by volatilizing the first solvent contained in the coated film to position a precipitate containing the first substance on the surface of the coated film; and A third step of polymerizing the first substance and the second substance located in the area irradiated with ionizing radiation by irradiating at least a part of the area with ionizing radiation;
    According to the third step, a surface having the protruding point group of the appearance layer is formed.
  14. 　前記第３ステップでは、前記析出塗膜の全体に前記電離放射線を照射することにより、前記突出点群を全面に備える前記外観層を前記析出塗膜から形成する、請求項１３に記載の光学パネルの製造方法。 The optical panel according to claim 13, wherein in the third step, the outer appearance layer including the protruding point group is formed on the entire surface by irradiating the entire surface of the deposited coating with the ionizing radiation. Manufacturing method.
  15. 　前記外観層は、前記突出点群を備える面を有する第１領域と、前記突出点群を備えない面を有する第２領域とからなり、
    　前記第３ステップでは、前記析出塗膜の一部の領域である第１塗膜領域について前記電離放射線を照射することにより、前記第１塗膜領域に位置する前記第１物質および前記第２物質を重合させて、前記第１領域を形成し、
    　前記第３ステップに続いて、
    　　前記析出塗膜における前記電離放射線が照射されていない第２塗膜領域を加熱して、前記第２塗膜領域の面平滑性を高める第４ステップ；および
    　　前記面平滑性が高められた第２塗膜領域に電離放射線を照射することにより、前記第２塗膜領域に位置する前記第１物質および前記第２物質を重合させて、前記第２領域を形成する第５ステップ
    を備える、請求項１３に記載の光学パネルの製造方法。     The appearance layer includes a first region having a surface including the protruding point group, and a second region having a surface not including the protruding point group,
    In the third step, the first material and the second material located in the first coating region are irradiated by irradiating the ionizing radiation on the first coating region which is a partial region of the deposited coating. To form the first region,
    Following the third step,
    A fourth step of heating the second coating film region not irradiated with the ionizing radiation in the deposited coating film to increase the surface smoothness of the second coating film region; The method includes a fifth step of polymerizing the first substance and the second substance located in the second coating film region by irradiating the coating film region with ionizing radiation to form the second region. 14. A method for producing an optical panel according to item 13.
  16. 　前記液状体はフィラー成分をさらに含む、請求項１３から１５のいずれか一項に記載の光学パネルの製造方法。 The method of manufacturing an optical panel according to any one of claims 13 to 15, wherein the liquid further includes a filler component.
  17. 　前記液状体はフィラー成分を含まない、請求項１３から１５のいずれか一項に記載の光学パネルの製造方法。 The method for producing an optical panel according to any one of claims 13 to 15, wherein the liquid does not contain a filler component.
  18. 　前記液状体は重合開始剤を含み、前記第１物質および前記第２物質の重合は、電磁波の照射により行う、請求項１３から１７のいずれか一項に記載の光学パネルの製造方法。 The method for producing an optical panel according to any one of claims 13 to 17, wherein the liquid includes a polymerization initiator, and the polymerization of the first substance and the second substance is performed by irradiation with electromagnetic waves.
  19. 　前記第４ステップでは、前記析出塗膜における前記第１物質を含む析出体が溶融するように加熱を行う、請求項１５から１８のいずれか一項に記載の光学パネルの製造方法。 The method for manufacturing an optical panel according to any one of claims 15 to 18, wherein in the fourth step, heating is performed so that a precipitate containing the first substance in the deposited coating film is melted.
  20. 　前記液状体は前記第１物質に対する相溶性を有する第３物質を含有し、前記第２ステップで形成される前記第１物質を含む析出体は前記第３物質を含み、前記第１物質を含む析出体は前記第１物質からなる析出体よりも融点が低い、請求項１９に記載の光学パネルの製造方法。 The liquid material includes a third material having compatibility with the first material, and the precipitate including the first material formed in the second step includes the third material, and includes the first material. The method for manufacturing an optical panel according to claim 19, wherein the precipitate has a melting point lower than that of the precipitate made of the first substance.
  21. 　前記第３物質がフェノール系化合物である、光学パネルの製造方法。 The method for producing an optical panel, wherein the third substance is a phenol compound.
  22. 　請求項１から１２のいずれか一項に記載される光学パネルを備える機器。 A device comprising the optical panel according to any one of claims 1 to 12.
  23. 　転写元面を有する転写層を備える転写体であって、
    　前記転写層は、電離放射線重合性の第１物質の重合体を含む第１樹脂系材料、および前記第１物質とは異なる電離放射線重合性の第２物質の重合体を含む第２樹脂系材料を含み、
    　前記転写元面は、前記第１樹脂系材料からなり前記転写層の厚さ方向に突出して外光を散乱する突出点群を備え、
    　前記転写層における前記転写元面を含む領域は、前記転写層の厚さ方向に組成が相違し、前記転写元面側における前記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比は、前記転写元面側とは反対側における前記第１樹脂系材料の含有量の前記第２樹脂系材料の含有量に対する比よりも高いこと
    を特徴とする転写体。     A transfer body comprising a transfer layer having a transfer origin surface,
    The transfer layer includes a first resin-based material containing a polymer of an ionizing radiation-polymerizable first substance and a second resin-based material containing a polymer of an ionizing radiation-polymerizable second substance different from the first substance. Including
    The transfer source surface includes a protruding point group made of the first resin material and protruding in the thickness direction of the transfer layer to scatter external light,
    The region including the transfer source surface in the transfer layer has a composition different in the thickness direction of the transfer layer, and the content of the second resin material in the content of the first resin material on the transfer source surface side. The transfer body is characterized in that a ratio to the amount is higher than a ratio of the content of the first resin material on the side opposite to the transfer original surface side to the content of the second resin material.
  24. 　前記第１物質に対する相溶性を有する第３物質を含む、請求項２３に記載の転写体。 The transfer body according to claim 23, comprising a third substance having compatibility with the first substance.
  25. 　前記第３物質がフェノール系化合物である、請求項２３または２４に記載の転写体。 25. The transfer body according to claim 23 or 24, wherein the third substance is a phenol compound.
  26. 　外光を散乱する突出点群を備える転写元面を有する転写層を備える転写体の製造方法であって、
    　電離放射線重合性の第１物質と、前記第１物質とは異なる電離放射線重合性の第２物質と、前記第２物質よりも前記第１物質を溶解しやすい第１溶媒と、前記第１物質よりも前記第２物質を溶解しやすく前記第１溶媒よりも沸点が高い第２溶媒と、を含有する液状体を、基材の一方の面に塗布して前記基材上に塗膜を形成する第１ステップ；
    　前記塗膜に含有される前記第１溶媒を揮発させることにより、前記第１物質を含む析出体を前記塗膜の表面に位置させて析出塗膜を得る第２ステップ；および
    　前記析出塗膜の少なくとも一部の領域に電離放射線を照射することにより、前記電離放射線が照射された領域に位置する前記第１物質および前記第２物質を重合させる第３ステップ
    を備え、
    　前記第３ステップにより、前記突出点群を備える前記転写元面が形成されることを特徴とする転写体の製造方法。     A method for producing a transfer body comprising a transfer layer having a transfer origin surface with protruding point groups that scatter external light,
    An ionizing radiation polymerizable first substance, an ionizing radiation polymerizable second substance different from the first substance, a first solvent that dissolves the first substance more easily than the second substance, and the first substance A liquid material containing a second solvent that is easier to dissolve the second substance and has a higher boiling point than the first solvent is applied to one surface of the substrate to form a coating film on the substrate. A first step of;
    A second step of obtaining a deposited coating film by volatilizing the first solvent contained in the coated film to position a precipitate containing the first substance on the surface of the coated film; and A third step of polymerizing the first substance and the second substance located in the area irradiated with ionizing radiation by irradiating at least a part of the area with ionizing radiation;
    The method of manufacturing a transfer body, wherein the transfer original surface including the protruding point group is formed by the third step.
  27. 　前記転写層は、前記突出点群を備える面を有する第１領域と、前記突出点群を備えない面を有する第２領域とからなり、
    　前記第３ステップでは、前記析出塗膜の一部の領域である第１塗膜領域について前記電離放射線を照射することにより、前記第１塗膜領域に位置する前記第１物質および前記第２物質を重合させて、前記第１領域を形成し、
    　前記第３ステップに続いて、
    　　前記析出塗膜における前記電離放射線が照射されていない第２塗膜領域を加熱して、前記第２塗膜領域の面平滑性を高める第４ステップ；および
    　　前記面平滑性が高められた第２塗膜領域に電離放射線を照射することにより、前記第２塗膜領域に位置する前記第１物質および前記第２物質を重合させて、前記第２領域を形成する第５ステップ
    を備える、請求項２６に記載の転写体の製造方法。     The transfer layer includes a first region having a surface with the protruding point group and a second region having a surface without the protruding point group,
    In the third step, the first material and the second material located in the first coating region are irradiated by irradiating the ionizing radiation on the first coating region which is a partial region of the deposited coating. To form the first region,
    Following the third step,
    A fourth step of heating the second coating film region not irradiated with the ionizing radiation in the deposited coating film to increase the surface smoothness of the second coating film region; The method includes a fifth step of polymerizing the first substance and the second substance located in the second coating film region by irradiating the coating film region with ionizing radiation to form the second region. 27. A method for producing a transfer body according to 26.
  28. 　前記第４ステップでは、前記析出塗膜における前記第１物質を含む析出体が溶融するように加熱を行い、
    　前記液状体は前記第１物質に対する相溶性を有する第３物質を含有し、前記第２ステップで形成される前記第１物質を含む析出体は前記第３物質を含み、前記第１物質を含む析出体は前記第１物質からなる析出体よりも融点が低い、請求項２７に記載の転写体の製造方法。     In the fourth step, heating is performed so that the precipitate containing the first substance in the deposited coating melts,
    The liquid material includes a third material having compatibility with the first material, and the precipitate including the first material formed in the second step includes the third material, and includes the first material. 28. The method for producing a transfer body according to claim 27, wherein the precipitate has a melting point lower than that of the precipitate made of the first substance.
  29. 　前記第３物質がフェノール系化合物である、請求項２７または２８に記載の転写体の製造方法。 The method for producing a transfer body according to claim 27 or 28, wherein the third substance is a phenol compound.
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