WO2014069542A1 - Corps stratifié et dispositif d'affichage - Google Patents
Corps stratifié et dispositif d'affichage Download PDFInfo
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- WO2014069542A1 WO2014069542A1 PCT/JP2013/079460 JP2013079460W WO2014069542A1 WO 2014069542 A1 WO2014069542 A1 WO 2014069542A1 JP 2013079460 W JP2013079460 W JP 2013079460W WO 2014069542 A1 WO2014069542 A1 WO 2014069542A1
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Images
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- B32B23/04—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B23/08—Layered products comprising a layer of cellulosic plastic substances, i.e. substances obtained by chemical modification of cellulose, e.g. cellulose ethers, cellulose esters, viscose comprising such cellulosic plastic substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- C08J5/124—Bonding of a preformed macromolecular material to the same or other solid material such as metal, glass, leather, e.g. using adhesives using adhesives based on a macromolecular component
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
Definitions
- the present invention relates to a laminate used by being bonded to an adherend, and a display device using the laminate.
- a contrast-enhancement film As a display device used in electronic devices such as mobile phones, tablet PCs, car navigation systems, personal computers, ticket vending machines, bank terminals, etc., a contrast-enhancement film, reflection is provided on the front of display panels such as liquid crystal display panels and organic EL display panels.
- An optical filter such as a prevention film bonded with an adhesive layer is known.
- Such a display device is manufactured, for example, by providing an adhesive layer on one side of an optical filter and attaching the adhesive layer to the front surface of the display panel.
- a high positional accuracy is required for bonding the display panel and the optical filter, and even if the positions are slightly shifted, it is regarded as a defective product.
- the display panel and the optical filter are bonded to each other with a shift, the display panel is expensive. Therefore, the optical filter is removed from the display panel, and the display panel is reused. Therefore, the optical filter is required to be able to be peeled off from the display panel well, so-called reworkability. Specifically, it is required that the adhesive layer does not remain on the display panel, that is, so-called adhesive residue is small, and that the optical filter is partially damaged and does not remain.
- the adhesive layer has a two-layer structure, and the initial adhesion of one adhesive layer to the soda glass plate is within a predetermined range while improving the reworkability and suppressing the mixing of bubbles at the time of bonding.
- the adhesion force after 24 hours of both is adjusted within a predetermined range (see, for example, Patent Document 1).
- a technique in which the adhesive force to a glass substrate is within a predetermined range and the breaking stress is within a predetermined range for example, see Patent Document 2.
- the adhesion strength and the like are within a predetermined range.
- different types of members are often arranged on both main surfaces of the pressure-sensitive adhesive layer, and the adhesion force varies greatly depending on the type of member, surface condition, and the like. For this reason, the reworkability cannot always be improved simply by specifying the adhesion.
- Such a problem is not limited to a display device.
- an optical filter such as a Low-E film in which a heat ray blocking film called a Low-E (Low-Emissivity) film is formed on a window glass of a building or an automobile is formed. It also occurs when pasting.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a laminate having good reworkability. Another object of the present invention is to provide a display device using such a laminate.
- the laminate of the present invention relates to a laminate used by being bonded to an adherend.
- the display device of the present invention includes an adherend having a display panel and a laminated body bonded to the adherend.
- the laminate is the laminate of the present invention described above.
- the present invention has the following gist.
- a laminate used by being bonded to an adherend In order from the adherend side, a first adhesive layer, a first base material layer, a second adhesive layer, and a second base material layer are provided, and the laminate is attached to the adherend.
- the adhesion between the adherend and the first pressure-sensitive adhesive layer when combined is A [N / 25 mm]
- the adhesion between the first pressure-sensitive adhesive layer and the first base material layer is B [N / 25 mm]
- the adhesive force between the first base material layer and the second adhesive layer is C [N / 25 mm]
- the adhesive force between the second adhesive layer and the second base material layer is When D [N / 25 mm]
- the laminated body is characterized in that all of the adhesion forces B, C, and D are larger than the adhesion force A by 5 [N / 25 mm] or more.
- a laminate having good reworkability can be provided. Further, according to the present invention, it is possible to provide a display device having a laminate having good reworkability and good productivity.
- Sectional drawing which shows typically one Embodiment of the display apparatus which has a laminated body. Sectional drawing which shows typically one Embodiment of a contrast improvement layer.
- FIG. 1 is a cross-sectional view showing an embodiment of a display device using a laminate.
- the display device 10 includes, for example, an adherend 11 having a display panel, and a laminated body 12 as an optical filter bonded to the front surface of the adherend 11.
- the laminate 12 includes a first pressure-sensitive adhesive layer 13, a first base material layer 14, a second pressure-sensitive adhesive layer 15, and a second base material layer 16 in order from the adherend 11 side.
- the laminate 12 has an adhesive force of A [N / 25 mm] between the adherend 11 and the first adhesive layer 13 when the laminate 12 is bonded to the adherend 11, and the first adhesive layer 13.
- the adhesive strength between the first base material layer 14 and the first base material layer 14 is B [N / 25 mm]
- the adhesive strength between the first base material layer 14 and the second adhesive layer 15 is C [N / 25 mm]
- the second When the adhesive force between the adhesive layer 15 and the second base material layer 16 is D [N / 25 mm]
- the adhesive force B, C, and D are all 5 [N / 25 mm] compared to the adhesive force A. Bigger than that.
- adheresion strength is “conforms to the standard of JIS Z 0237”.
- the second base material layer 16 in addition to the first base material layer 14, by increasing the adhesion forces B, C, and D by 5 [N / 25 mm] or more compared to the adhesion force A, The reworkability of the laminate 12 can be improved. Specifically, when the laminate 12 is peeled from the adherend 11, it is possible to suppress the first pressure-sensitive adhesive layer 13 and a part of the first base material layer 14 from remaining on the adherend 11. In particular, when the first base material layer 14 is easily damaged by tearing, such as a contrast enhancement film or a thin glass plate, the first base material layer 14 is reinforced by the second base material layer 16 and the damage It is possible to suppress the remaining on the adherend 11 by suppressing the above.
- Examples of the display panel of the adherend 11 include display panels such as a liquid crystal display panel, a plasma display panel, and an organic EL display panel.
- the adherend 11 is not necessarily limited to having only a single display panel, and a functional layer described later, for example, an electromagnetic wave shielding layer, a contrast improving layer, or the like is laminated on the front surface according to the type of the display panel. May be.
- the first pressure-sensitive adhesive layer 13 is for bonding the adherend 11 and the first base material layer 14, and the adhesive force A [N / 25 mm] when bonded to the adherend 11 and the first The adhesive force difference (BA) with the adhesive force B [N / 25 mm] when bonded to the base material layer 14 is 5 [N / 25 mm] or more.
- the 1st adhesive layer 13 has a single layer structure comprised entirely with the same material. That is, the first pressure-sensitive adhesive layer 13 does not include a multilayer structure.
- the adhesion difference (BA) When the adhesion difference (BA) is less than 5 [N / 25 mm], the first pressure-sensitive adhesive layer 13 tends to remain on the surface of the adherend 11 when the laminate 12 is peeled from the adherend 11. .
- the adhesion difference (BA) is preferably 5.5 [N / 25 mm] or more, and more preferably 8.0 [N / 25 mm] or more. Basically, the larger the difference in adhesion (BA) is, the better, but it is usually sufficient that the difference is about 10 [N / 25 mm].
- the adjustment of the adhesion difference (BA) is, for example, an adhesion difference (BA) of 5 [N / 25 mm] depending on the adherend 11 and the first base material layer 14 to be deposited. This is performed by selecting an adhesive as described above. Specifically, for various pressure-sensitive adhesives that are considered to be applied to the first pressure-sensitive adhesive layer 13, the adhesive force A with the adherend 11 is measured and the first base material layer 14 is configured. The adhesion strength B with the material is measured, and a material having an adhesion strength difference (BA) of 5 [N / 25 mm] or more is selected and used.
- BA adhesion difference
- the adhesive force greatly varies depending on the constituent material of the pressure-sensitive adhesive, and also varies greatly depending on the constituent material to be deposited and the surface condition such as surface irregularities. Therefore, the adhesion force difference (B ⁇ A) can be reliably adjusted by actually measuring the adhesion forces A and B to the deposition target.
- adhesion power A and B can be performed by adjustment of a composition, hardness, etc. of an adhesive, for example.
- the values of the adhesion forces A and B themselves are not necessarily limited as long as the adhesion force difference (BA) is within a predetermined range.
- the adhesion strength A is preferably 1 [N / 25 mm] or more from the viewpoint of adhesion to the adherend 11. Further, the adhesion A is preferably 15 [N / 25 mm] or less, more preferably 10 [N / 25 mm] or less from the viewpoint of facilitating peeling from the adherend 11.
- the adhesion force B [N / 25 mm] is sufficient if the adhesion force difference (BA) is 5 [N / 25 mm] or more, and usually the adhesion force difference (BA) is about 10 [N / 25 mm]. It will be enough.
- the difference in adhesion (BA) is obtained.
- the characteristic that the adhesive force of the first pressure-sensitive adhesive layer changes (increases) with time can be used. That is, after the first adhesive layer is bonded to the thin glass plate as the first base material layer, it is allowed to stand for 24 hours or more, and then the glass plate as the adherend is bonded within 3 hours. By peeling, the adhesion difference (BA) can be made 5 [N / 25 mm] or more.
- the first base material layer is peeled within one hour after bonding the thin glass plate.
- the adhesion difference (BA) can be made 5 [N / 25 mm] or more, and the reworkability can be improved.
- the thickness of the first pressure-sensitive adhesive layer 13 is not necessarily limited, but is preferably 10 ⁇ m or more. By setting the thickness to 10 ⁇ m or more, the adherend 11 and the first base material layer 14 can be bonded together reliably. As for the thickness of the 1st adhesive layer 13, 15 micrometers or more are more preferable, and 20 micrometers or more are further more preferable. Usually, the thickness of the first pressure-sensitive adhesive layer 13 is sufficient if it is 30 ⁇ m.
- the second pressure-sensitive adhesive layer 15 is provided for bonding the first base material layer 14 and the second base material layer 16 together.
- the second pressure-sensitive adhesive layer 15 has an adhesion force C [N / 25 mm] when bonded to the first substrate layer 14 and an adhesion force D [N / when bonded to the second substrate layer 16. 25 mm] is larger than the adhesion force A by 5 [N / 25 mm] or more. That is, both the adhesion force difference (CA) and the adhesion force difference (DA) are 5 [N / 25 mm] or more.
- a desired peeled portion that is, the adherend 11 and the first It can be peeled between the pressure-sensitive adhesive layer 13, and other portions, that is, between the first base material layer 14 and the second pressure-sensitive adhesive layer 15 and between the second pressure-sensitive adhesive layer 15 and the second pressure-sensitive adhesive layer 15. Separation with the base material layer 16 can be suppressed. Thereby, even when the first base material layer 14 is easily damaged due to tearing or the like, the second base material layer 16 is effectively reinforced to suppress the damage to the adherend 11. Can be suppressed.
- both the adhesion forces C and D with respect to the adhesion force A according to the first base material layer 14 and the second base material layer 16 to be attached Is performed by selecting an adhesive that increases 5 [N / 25 mm] or more.
- the adhesive force C with the constituent material constituting the first base material layer 14 is measured, and the second Adhesive that measures adhesion D with the constituent material constituting the base material layer 16 and increases the adhesion C and D with respect to the adhesion A among these by 5 [N / 25 mm] or more. Select and use.
- the adhesion forces C and D are preferably 7.0 [N / 25 mm] or more larger than the adhesion force A.
- the magnitude relationship between the adhesion forces C and D is not particularly limited, and the adhesion force C may be large, the adhesion force D may be large, or may be the same. It is sufficient that the adhesion forces C and D are about 10 [N / 25 mm] larger than the adhesion force A.
- the thickness of the second pressure-sensitive adhesive layer 15 is not necessarily limited, but is preferably 10 ⁇ m or more. By setting the thickness to 10 ⁇ m or more, the first base material layer 14 and the second base material layer 16 can be reliably bonded together.
- the thickness of the second pressure-sensitive adhesive layer 15 is more preferably 15 ⁇ m or more, and further preferably 20 ⁇ m or more. Usually, it is sufficient that the thickness of the second pressure-sensitive adhesive layer 15 is 30 ⁇ m.
- the constituent material of the first pressure-sensitive adhesive layer 13 and the second pressure-sensitive adhesive layer 15 is not necessarily limited as long as a predetermined difference in adhesion force is obtained.
- acrylic pressure-sensitive adhesives are preferably used.
- the acrylic pressure-sensitive adhesive is a polymer containing an acrylic monomer unit as a main component.
- the acrylic monomer include (meth) acrylic acid, itaconic acid, (anhydrous) maleic acid, (anhydrous) fumaric acid, crotonic acid, and alkyl esters thereof.
- (meth) acrylic acid is a general term for acrylic acid and methacrylic acid. The same applies to (meth) acrylate.
- alkyl esters of (meth) acrylic acid include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, n-butyl (meth) acrylate, n-pentyl (meth) acrylate, and n-hexyl (meth) ) Acrylate, n-heptyl (meth) acrylate, n-octyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isononyl (meth) acrylate, n-decyl (meth) acrylate, isodecyl (meth) acrylate, etc. .
- Monomers other than acrylic monomers can also be used for the acrylic pressure-sensitive adhesive.
- examples of other monomers used include vinyl esters such as vinyl acetate and vinyl propionate; olefins such as ethylene, propylene and isobutylene; halogenated olefins such as vinyl chloride and vinylidene chloride; styrene, ⁇ - Styrene monomers such as methylstyrene; Diene monomers such as butadiene, isoprene and chloroprene; Nitrile monomers such as acrylonitrile and methacrylonitrile; Acrylamide, N, N-dimethylacrylamide, N, N-dimethyl Examples include acrylamide monomers such as methacrylamide.
- a monomer having a functional group for example, a hydroxy group, a glycidyl group, or the like
- a crosslinking point examples include hydroxyethyl (meth) acrylate, glycidyl (meth) acrylate, and the like.
- crosslinking agent When using a monomer having a functional group that can be a crosslinking point, it is preferable to add a crosslinking agent. By adding a crosslinking agent, it is possible to ensure cohesion by reacting with the crosslinking point to crosslink the polymer.
- cross-linking agents include melamine resins, urea resins, epoxy resins, metal oxides, metal salts, metal hydroxides, metal chelates, polyisocyanates, carboxy group-containing polymers, acid anhydrides, polyamines, and so on. It is suitably selected according to the type of functional group that can be obtained.
- the acrylic pressure-sensitive adhesive can contain a silane coupling agent in order to adjust the adhesion.
- a silane coupling agent an organosilicon compound having at least one alkoxysilyl group in the molecule can be preferably used.
- an ultraviolet absorber a coloring pigment, and the like can be added to the acrylic adhesive.
- UV absorber examples include UV absorbers such as benzotriazole, benzophenone, salicylate, cyanoacrylate, triazine, oxanilide, nickel complex, and inorganic.
- Coloring dyes include color correction dyes and near infrared absorbing dyes.
- the color tone correction dye absorbs a part of a specific wavelength range of visible light and improves the color tone of transmitted visible light.
- Examples of color correction dyes include azo, condensed azo, diimonium, phthalocyanine, anthraquinone, indigo, perinone, perylene, dioxazine, quinacridone, methine, isoindolinone, and quinophthalone. , Pyrrole-based, thioindigo-based, metal complex-based, porphyrin-based, tetraazaporphyrin-based pigments.
- near infrared absorbing dyes examples include polymethine, phthalocyanine, naphthalocyanine, aminium, imonium, diimonium, anthraquinone, dithiol metal complex, naphthoquinone, indolephenol, azo, triallylmethane And dyes such as those based on tungsten oxide.
- the first pressure-sensitive adhesive layer 13 may be formed by applying a pressure-sensitive adhesive containing the above-described constituent components to the first base material layer 14, or a pressure-sensitive adhesive containing the above-described constituent components in advance.
- a pressure-sensitive adhesive sheet formed into a sheet shape may be bonded to the first base material layer 14.
- the second pressure-sensitive adhesive layer 15 may be formed by applying a pressure-sensitive adhesive to the first base material layer 14 or the second base material layer 16 or by bonding a pressure-sensitive adhesive sheet. May be.
- Coating is, for example, dip coating method, spray coating method, spinner coating method, bead coating method, wire bar coating method, blade coating method, roller coating method, curtain coating method, slit die coater method, gravure coater method, slit reverse.
- a coater method, a micro gravure method, a comma coater method, etc. can be applied.
- non-carrier sheet is a film in which two base materials coated with silicone are laminated via an adhesive.
- the 1st base material layer 14 and the 2nd base material layer 16 should just have a base material at least, for example, the functional layer which has a functional film on the surface of a base material besides a base material simple substance is mentioned. .
- the single base material examples include a resin film and a thin glass plate.
- the single base material can contain a coloring pigment, an ultraviolet absorber, and the like as necessary and to the extent possible.
- the resin film examples include polyesters such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT); polyolefins such as polyethylene and polypropylene; polyacrylates such as polymethyl methacrylate (PMMA); polycarbonates (PC); Polystyrenes; celluloses such as triacetyl cellulose, diacetyl cellulose, acetate butyrate cellulose; polyvinyl alcohol; polyvinyl chloride; polyvinylidene chloride; ethylene-vinyl acetate copolymer; polyvinyl butyral;
- the thickness of the resin film is preferably 10 to 200 ⁇ m, more preferably 50 to 150 ⁇ m.
- a thin glass plate is provided for enhancing the design by imparting the texture of glass or for protecting the surface.
- Such a glass plate preferably has a thickness of 0.05 to 5 mm.
- Examples of the functional layer include a contrast improving layer, an electromagnetic wave shielding layer, an antireflection layer, an antiglare layer, a colored layer, and an ultraviolet absorbing layer.
- FIG. 2 is a cross-sectional view showing an example of the contrast improving layer.
- FIG. 2 shows an example in which a contrast improving layer is applied to the first base material layer 14.
- the contrast enhancement layer 14 ′ is provided to suppress a decrease in contrast due to external light, and has a contrast enhancement film 142 on one surface of the base material 141.
- the substrate 141 examples include a resin film similar to a single substrate or a thin glass plate.
- the contrast enhancement film 142 includes a plurality of light transmitting regions 142a that extend in the horizontal direction and are arranged in parallel to each other, and a dark color portion 142b that is disposed between the light transmitting regions 142a.
- the dark portion 142b contains dark particles, and the cross-sectional shape thereof may be a square shape, a rectangular shape, a triangular shape, or the like in addition to a substantially trapezoidal shape.
- the translucent region 142a and the dark portion 142b are made of a cured product of a composition containing, for example, an ultraviolet curable resin and a photopolymerization initiator.
- the dark color portion 142b containing dark particles can absorb external light to improve the contrast of the display image, and the translucent region 142a does not contain dark particles. It is possible to suppress a decrease in visibility due to the darkness of the display image without reducing the light transmittance.
- the contrast improving layer 14 ′ is disposed so that, for example, the contrast improving film 142, in particular, the translucent region 142 a and the dark portion 142 b are in contact with the first pressure-sensitive adhesive layer 13.
- the laminate 12 when the laminate 12 is peeled off from the adherend 11, for example, damage is caused at a boundary portion between the translucent region 142a and the dark color portion 142b or a thin portion in the translucent region 142a. It is easy and the damaged part tends to remain on the adherend 11 together with the first pressure-sensitive adhesive layer 13.
- the adhesion difference (BA) is set to 5 [N / 25 mm] or more, even if it is easily damaged like the contrast improving layer 14 ′, the adherend 11 Residue on the surface can be suppressed.
- the constituent material of the translucent region 142a in the contrast enhancement layer 14 ′ is preferably a resin material because it is easy to form a groove for forming the dark color portion 142b, can be light and thin, and is excellent in flexibility.
- resin materials such as ionizing radiation curable resins, thermosetting resins, and thermoplastic resins.
- the ionizing radiation curable resin is cured by crosslinking or polymerization reaction by irradiation with electromagnetic waves or charged particle beams such as ultraviolet rays or electron beams.
- electromagnetic waves or charged particle beams such as ultraviolet rays or electron beams.
- Examples of such ionizing radiation curable resins include ionizing radiation polymerizable prepolymers and / or ionizing radiation polymerizable monomers.
- ionizing radiation polymerizable prepolymers include polyester (meth) acrylate, epoxy (meth) acrylate, urethane (meth) acrylate, polyol (meth) acrylate, and silicon (meth) acrylate.
- polymerizable prepolymers having a functional functional group may be used alone or in combination of two or more.
- a polyfunctional (meth) acrylate which is a polymerizable monomer having a radical polymerizable functional group in the molecule is preferable, specifically, ethylene glycol di (meth) acrylate
- examples include propylene glycol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and caprolactone-modified dipentaerythritol hexa (meth) acrylate.
- ionizing radiation polymerizable monomer examples include polymerizable monomers having a cationic polymerizable functional group in the molecule.
- polymerizable monomers having a cationic polymerizable functional group in the molecule include polymerizable monomers having a cationic polymerizable functional group in the molecule.
- alicyclic epoxides such as 3,4-epoxycyclohexenylmethyl-3 ′, 4′-epoxycyclohexenecarboxylate, glycidyl ethers such as bisphenol A diglycidyl ether, vinyl ethers such as 4-hydroxybutyl vinyl ether, And oxetanes such as 3-ethyl-3-hydroxymethyloxetane.
- the ionizing radiation curable resin When an ultraviolet curable resin is used as the ionizing radiation curable resin, it is preferable to add about 0.1 to 5 parts by mass of the photopolymerization initiator with respect to 100 parts by mass of the ionizing radiation curable resin.
- the photopolymerization initiator can be appropriately selected from those conventionally used.
- Examples of the polymerizable monomer or polymerizable prepolymer having a radical polymerizable functional group in the molecule include benzoin, benzoin methyl ether, acetophenone, dimethylaminoacetophenone, 2-hydroxy-2-methyl-1-phenylpropane-1- ON, 1-hydroxycyclohexyl phenyl ketone, benzophenone, p-phenylbenzophenone, 2-methylanthraquinone, 2-ethylanthraquinone, 2-methylthioxanthone, 2-ethylthioxanthone, benzyl dimethyl ketal, acetophenone dimethyl ketal and the like are used.
- aromatic sulfonium salts aromatic diazonium salts, aromatic iodonium salts, metallocene compounds, and benzoin sulfonic acid esters are used as polymerizable monomers and polymerizable prepolymers having a cationic polymerizable functional group in the molecule. It is done.
- photosensitizer p-dimethylbenzoate, tertiary amines, thiol sensitizers and the like are used.
- Thermosetting resins include phenolic resin, phenol-formalin resin, urea resin, urea-formalin resin, melamine resin, polyester-melamine resin, melamine-formalin resin, alkyd resin, epoxy resin, epoxy-melamine resin, unsaturated polyester Examples thereof include resins, polyimide resins, acrylic resins, polysiloxane resins, polyurethane resins, and general-purpose two-component curable acrylic resins (acrylic polyol cured products).
- Thermoplastic resins include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), ethylene glycol-terephthalic acid-isophthalic acid copolymer, terephthalic acid-ethylene glycol-1,4 cyclohexanedimethanol copolymer, polyester heat Polyester resins such as plastic elastomers; Polyolefin resins such as polyethylene, polypropylene, cyclic polyolefin, and polymethylpentene; Halogen-containing resins such as polyvinyl chloride and polyvinylidene chloride; Styrene resins such as polystyrene and acrylonitrile-styrene copolymers; Cellulose resins such as acetyl cellulose, diacetyl cellulose, acetate butyrate cellulose; thermoplastic polyurethane resins; polycarbonate resins; polyamide resins It is.
- PET polyethylene terephthalate
- PEN polyethylene naphthal
- the dark color portion 142b in the contrast improving layer 14 ' is preferably a material in which dark particles are dispersed in a binder resin, and preferably a material that absorbs incident visible light (external light) at a high rate. According to such a configuration, even if the reflected external light is not conspicuous and the reflected light is mixed into the image light, a decrease in image contrast is suppressed.
- black particles black pigments such as carbon black (black) and black iron oxide, and transparent particles such as acrylic are dyed with a black pigment such as carbon black.
- black particles black pigments such as carbon black (black) and black iron oxide, and transparent particles such as acrylic are dyed with a black pigment such as carbon black.
- resin particles examples thereof include resin particles.
- the dark particles may be pigment particles that are achromatic by mixing various pigments such as blue, purple, yellow, and red, or may be resin particles that are dyed with these pigments.
- Copper pigments such as copper phthalocyanine blue, indanthrene blue, cobalt blue, ultramarine blue, purple pigments such as dioxazine violet, yellow pigments such as disazo yellow, isoindolinone yellow, and yellow lead, red pigments such as chromophthal red
- green pigments such as tiepel, quinacridone red, and petals include copper phthalocyanine green and patina.
- the content of dark particles is preferably 10 to 100 parts by mass with respect to 100 parts by mass of the binder resin.
- the binder resin include the same resin materials as those of the translucent region 142a, and examples thereof include resin materials such as an ionizing radiation curable resin, a thermosetting resin, and a thermoplastic resin.
- the contrast improving layer 14 ′ can be manufactured as follows, for example. First, a translucent region forming composition is applied on the substrate 141, and a groove portion or the like for forming the dark color portion 142b is formed on the surface thereof to form the translucent region 142a.
- a composition for forming a translucent region is prepared by dissolving an ultraviolet curable resin and a photopolymerization initiator in an organic solvent, and then using this as a base material. It is applied to the surface of 141, and a roll-shaped mold (shaped forming roll) is pressed against the surface to form a groove for forming the dark portion 142b, and cured by irradiation with ultraviolet rays. .
- the dark color part 142b can be formed by dissolving the dark color particles and the binder resin in an organic solvent to prepare a dark color part forming composition, and then applying this to the groove part between the translucent regions 142a and curing.
- a dark color portion forming composition is prepared by dissolving dark particles, an ultraviolet curable resin, and a photopolymerization initiator in an organic solvent, and this is used as a light transmissive region 142a. After being applied to the grooves in between, it is cured by irradiating with ultraviolet rays.
- the thickness of the translucent region 142a is preferably 20 to 200 ⁇ m, more preferably 30 to 150 ⁇ m, for example, from the viewpoint of forming the dark color portion 142b, and the thickness (depth) of the dark color portion 142b is 10 to 180 ⁇ m.
- the width is preferably 20 to 130 ⁇ m, the width is preferably 5 to 100 ⁇ m, more preferably 5 to 50 ⁇ m, and the pitch is preferably 10 to 200 ⁇ m, more preferably 20 to 150 ⁇ m.
- the electromagnetic wave shielding layer has, for example, a metal mesh film as an electromagnetic wave shielding film on a base material.
- a metal mesh film as an electromagnetic wave shielding film on a base material.
- Such an electromagnetic wave shielding layer is usually formed by bonding a copper foil on a base material and then processing the copper foil into a mesh shape, or a conductive ink such as copper or silver on the base material. It is manufactured by printing on.
- the base material a resin film similar to a single base material, a thin glass plate, or the like can be used.
- the electromagnetic wave shielding layer may be formed by forming an electromagnetic wave shielding film on a base material by a sputtering method.
- the electromagnetic wave shielding film is formed by alternately laminating metal oxide films and metal films, for example, where the number of metal films is n and the number of metal oxide films is n + 1 (where n is 1). It is an integer above.
- the metal oxide film include an oxide of indium and tin, an oxide of titanium and zinc, an oxide of aluminum and zinc, an oxide of niobium, and the like.
- what consists of silver, a silver alloy, etc. is mentioned as a metal film.
- the antireflection layer is provided to suppress reflection of visible light (external light). By providing the antireflection layer, reflection can be suppressed and the contrast of the display image can be improved.
- the antireflection layer has, for example, an antireflection film on a substrate.
- the substrate a resin film similar to a single substrate or a thin glass plate can be used.
- the antireflection film include a laminated film in which an inorganic compound having a low refractive index and an inorganic compound having a high refractive index are alternately laminated, a film made of an inorganic compound having a low refractive index, and a film made of a resin having a low refractive index. It is done.
- the inorganic compound having a low refractive index include silicon dioxide.
- the resin having a low refractive index include a fluororesin, a silicone resin, and a fluorosilicone resin.
- the anti-glare layer has, for example, an anti-glare portion composed of uneven portions on the surface.
- the anti-glare portion has an effect of blurring the outline by diffusing a reflected image reflected on the surface by the uneven portion on the surface.
- the surface of the base material is coated with a solution in which inorganic fine particles such as silica or organic fine particles such as acrylic resin are dispersed in a binder, and the solvent is volatilized to form an antiglare portion composed of uneven portions. And those obtained by forming a glare-proof portion comprising uneven portions on the substrate itself by sandblasting, etching, or the like.
- the base material a resin film similar to a single base material, a thin glass plate, or the like can be used.
- the colored layer examples include those having a colored film which is a resin film containing a colored pigment on a substrate.
- a resin film similar to a single substrate or a thin glass plate can be used.
- the coloring dye examples include a color tone correction dye and a near-infrared absorbing dye, and those used for the first pressure-sensitive adhesive layer 13 and the second pressure-sensitive adhesive layer 15 can be used.
- the ultraviolet absorbing layer examples include those having an ultraviolet absorbing film which is a resin film containing an ultraviolet absorbent on a substrate.
- the substrate a resin film similar to a single substrate or a thin glass plate can be used.
- the 1st adhesive layer 13 or the 2nd adhesive layer 15 can be used for an ultraviolet absorber.
- the adherend 11 has a single display panel
- the laminate 12 is an adhesive layer (first adhesive layer 13) made of an acrylic adhesive in order from the adherend 11 side. )
- a contrast improving layer (first base layer 14) provided with a contrast improving film on the base an adhesive layer made of an acrylic adhesive (second adhesive layer 15), and the base Examples thereof include those having an antireflection layer (second base material layer 16) provided with an antireflection film.
- the base material of the antireflection layer is preferably a polyethylene terephthalate film from the viewpoint of suppressing damage to the contrast improving layer.
- the thickness of the polyethylene terephthalate film serving as the base material for such an antireflection layer is preferably 38 ⁇ m or more, and more preferably 75 ⁇ m or more.
- the contrast improving layer when the laminate 12 is peeled from the adherend 11, the contrast improving layer is easily damaged and remains on the adherend 11.
- an antireflection layer that should also be a reinforcing layer is provided, and the adhesive force B, C, and D are all increased by 5 [N / 25 mm] or more compared to the adhesive force A, whereby an adhesive layer In addition to the remaining (first pressure-sensitive adhesive layer 13), the remaining contrast enhancing layer due to damage can also be suppressed.
- a polyethylene terephthalate film as the base material of the antireflection layer, it is possible to effectively suppress the remaining of the contrast improving layer due to damage.
- Other display devices 10 include those in which the contrast enhancement layer (first base material layer) of the display device 10 is a triacetyl cellulose film. Since the triacetyl cellulose film is also easily damaged like the contrast improving layer, the same remarkable effect can be obtained.
- an adherend 11 is obtained by sequentially laminating an adhesive layer, an electromagnetic wave shielding layer, an adhesive layer, and a contrast improving layer on a display panel.
- an adhesive layer (first adhesive layer 13) made of an acrylic adhesive, a thin glass plate (first base material layer 14), and an adhesive layer made of an acrylic adhesive.
- examples thereof include (second pressure-sensitive adhesive layer 15) and an antireflection layer (second base material layer 16) in which an antireflection film is provided on the base material.
- the base material of the antireflection layer is preferably a polyethylene terephthalate film from the viewpoint of suppressing damage to the thin glass plate.
- the thickness of the polyethylene terephthalate film serving as the base material for such an antireflection layer is preferably 38 ⁇ m or more, and more preferably 75 ⁇ m or more.
- the adherend 11 is not necessarily limited to a single display panel, and functional layers such as an electromagnetic wave shielding layer and a contrast enhancement layer may be laminated on the front surface according to the type of the display panel.
- functional layers such as an electromagnetic wave shielding layer and a contrast enhancement layer may be laminated on the front surface according to the type of the display panel.
- the laminate 12 has a thin glass plate, when the laminate 12 is peeled from the adherend 11, the thin glass plate is easily damaged and remains on the adherend 11.
- an anti-reflection layer that should serve as a reinforcing layer is provided, and the adhesive force B, C, and D are all increased by 5 [N / 25 mm] or more compared to the adhesive force A.
- the agent layer first pressure-sensitive adhesive layer 13
- the laminate 12 is not necessarily limited to one having two pressure-sensitive adhesive layers and two base material layers, and the pressure-sensitive adhesive layer and the base material layer may each be three or more layers.
- the adhesive layer which is the third and subsequent layers counted only from the adhesive layer 11 side from the adherend 11 side has an adhesive force of 5 [ N / 25 mm] or more is preferable. By setting it as such, it can be made to peel between a desired peeling part, ie, the adherend 11 and the 1st adhesive layer (1st adhesive layer 13), and other parts. Can be prevented. Thereby, damage to the adherend 11 can be suppressed by suppressing damage to the first base layer (first base layer 14) and the like.
- the first base material layer (first base material layer 14) and the second base material layer Like a layer (2nd base material layer 16), it can be set as the functional layer which has a functional film on the surface of a base material other than a base material single-piece
- the laminated body of the present invention has been described by taking the optical filter for display device applied to the display device as an example, the laminated body of the present invention is not necessarily limited to the optical filter for display device.
- the laminated body of the present invention may be a low-emissivity laminated body used by being attached to a window glass of a building or an automobile.
- a base material alone or a heat ray blocking film called a Low-E (Low-Emissivity) film formed on the base material is used as the first base material layer and the second base material layer.
- a base material alone or a heat ray blocking film called a Low-E (Low-Emissivity) film formed on the base material is used. Is mentioned.
- Examples 1 to 3 and 7 are examples of the present invention, and Examples 4 to 6 are comparative examples of the present invention.
- Example 1 A laminate having the structure shown in Table 1 was produced as the laminate of Example 1.
- the 2nd adhesion layer was manufactured as follows. To 6 parts by mass of methyl ethyl ketone, 1.13 parts by mass of an ultraviolet absorber (trade name “TINUVIN 479” manufactured by Ciba) and 0.0150 part by mass of a porphyrin compound (manufactured by Yamada Chemical Co., TAP 18) are added and stirred for 10 minutes with a mixer. And dissolved.
- an ultraviolet absorber trade name “TINUVIN 479” manufactured by Ciba
- a porphyrin compound manufactured by Yamada Chemical Co., TAP 18
- the second adhesive layer is bonded to an antireflection (AR) film (trade name “RL9900”, manufactured by NOF Corporation, base material: PET film, base material thickness 100 ⁇ m) to be the second base material layer.
- AR antireflection
- RLF contrast enhancing film
- an acrylic adhesive (trade name “NCK101 adhesive” manufactured by Toyo Ink Co., Ltd.) serving as the first adhesive layer is formed on the side opposite to the PET film surface of the contrast improving film serving as the first base material layer with a thickness of 25 ⁇ m.
- the optical filter as a laminated body was produced by applying to the above.
- the contrast improvement film (CRF) used as a 1st base material layer was manufactured as follows.
- a base material a 100 ⁇ m-thick polyethylene terephthalate belt-like sheet (product name: A4300, manufactured by Toyobo Co., Ltd.) that has been subjected to easy adhesion on both sides is prepared, and an ultraviolet curable resin made of urethane acrylate prepolymer is thickened thereon The film was applied to a thickness of 89 ⁇ m.
- a metal capable of forming a plurality of groove-like recesses having a maximum bottom opening width of 10 ⁇ m, a minimum width of 7 ⁇ m on the upper bottom side, and a depth of 69 ⁇ m.
- the shaping mold roll was pressed and the ultraviolet curable resin was cured by irradiating ultraviolet rays from the back side while engraving the groove-like concave shape.
- a plurality of groove-shaped recesses having a pitch of 51 ⁇ m and groove-shaped recesses having an opening width on the lower base side of 10 ⁇ m, a minimum width on the upper base side of 7 ⁇ m, and a depth of 69 ⁇ m were formed.
- the shaping-type roll has a groove-shaped convex portion corresponding to the groove-shaped concave portion of the contrast improving film in the circumferential direction (a reverse convex shape that is the same shape as the concave shape of the contrast improving film),
- a groove-like recess can be formed so as to extend in the longitudinal direction of the sheet member by rotating the extension direction of the groove-like convex part in the longitudinal direction of the belt on the belt-like sheet member.
- a liquid ultraviolet curable resin composition was prepared by mixing 2 parts by mass of xyl-phenyl-ketone (trade name: Irgacure 184, manufactured by Ciba Specialty Chemicals). This liquid resin composition was applied to the groove-shaped recess forming surface side and then wiped with a doctor blade. In wiping, the liquid resin composition was cured by irradiating ultraviolet rays from the back at the same time. In wiping, the gap between the groove-shaped recess forming surface and the doctor blade was set to 1.5 ⁇ m, and the wiping was repeated twice.
- the groove-shaped recess can form a dark part with a trapezoidal cross section filled with an ultraviolet curable resin, which is a transparent resin, and black spherical beads, which are dark particles, on the flat part between these dark parts.
- an ultraviolet curable resin which is a transparent resin
- black spherical beads which are dark particles
- Example 2 The contrast-enhancement film, which is the first base material layer, is changed to a triacetyl cellulose film (manufactured by Fuji Film Co., Ltd., trade name: TAC film, thickness 80 ⁇ m), and the acrylic adhesive (Toyo Ink Co., Ltd.) which is the first adhesive layer
- a triacetyl cellulose film manufactured by Fuji Film Co., Ltd., trade name: TAC film, thickness 80 ⁇ m
- acrylic adhesive Toyo Ink Co., Ltd.
- An optical filter as a laminate was prepared in the same manner as in Example 1 except that the product was manufactured and trade name: NCK101 adhesive was changed to an acrylic adhesive (manufactured by Lintec Corporation, trade name: SY adhesive).
- Example 3 The acrylic adhesive (trade name: NCK101 adhesive manufactured by Toyo Ink Co., Ltd.), which is the first adhesive layer, was changed to an acrylic adhesive (trade name: SY adhesive manufactured by Lintec Corporation), and the second adhesive layer was acrylic.
- An optical filter as a laminate was produced in the same manner as in Example 1 except that the adhesive was changed to a system adhesive (trade name: P0280 adhesive, manufactured by Lintec Corporation).
- Example 4 Except that the acrylic adhesive (trade name: NCK101 adhesive manufactured by Toyo Ink Co., Ltd.), which is the first adhesive layer, was changed to an acrylic adhesive (trade name: P0280 adhesive manufactured by Lintec Co., Ltd.), the same as in Example 1 An optical filter as a laminate was produced.
- the acrylic adhesive trade name: NCK101 adhesive manufactured by Toyo Ink Co., Ltd.
- an acrylic adhesive trade name: P0280 adhesive manufactured by Lintec Co., Ltd.
- Example 5 A laminate as in Example 1 except that the second adhesive layer and the antireflection film with an adhesive layer to be the second base material layer were not bonded onto the contrast-enhancing film as the first base material layer. An optical filter was prepared.
- Example 6 Change the acrylic adhesive (product name: NCK101 adhesive, manufactured by Toyo Ink Co., Ltd.) to be the first adhesive layer to acrylic adhesive (product name: SY adhesive, manufactured by Lintec Corporation), and make the second adhesive layer non-
- An optical filter as a laminate was produced in the same manner as in Example 1 except that the carrier sheet was changed to a carrier sheet (trade name: TX48A non-carrier sheet, thickness 25 ⁇ m, manufactured by TOMO EGAWA).
- Example 7> The contrast improving film as the first base layer is changed to a 0.1 mm glass plate, the second adhesive layer is changed to an acrylic adhesive (trade name: P0280 adhesive), and the second adhesive layer is changed to the second adhesive layer.
- An optical filter as a laminate was produced in the same manner as in Example 1 except that the base material layer was changed to a PET film (trade name: A4300, manufactured by Toyobo Co., Ltd.).
- the adhesive strength between each substrate layer or the glass substrate as the adherend and each adhesive layer, adhesive residue and breakage at the time of peeling of the laminate were evaluated by the following methods.
- the adhesion was measured as follows in accordance with the standard of JIS Z 0237.
- Each adhesive layer (the first adhesive layer or the second adhesive layer) shown in Table 1 is formed on one side of a belt-like sheet made of polyethylene terephthalate (trade name: A4300, manufactured by Toyobo Co., Ltd.), and has an adhesive layer. A sheet was produced. Separately, each base material layer (first base material layer or second base material layer) shown in Table 1 is fixed to one side of a 2.5 mm thick soda lime glass plate with an adhesive (thickness 25 ⁇ m, width 25 mm). And the soda-lime glass plate which has a base material layer was manufactured.
- the pressure-sensitive adhesive layer of the belt-like sheet and the base material layer of the soda lime glass plate were bonded together and pressure-bonded with a 2 kg rubber roll at room temperature to obtain a pressure-bonded body.
- the pressure-bonded body was subjected to autoclave treatment (temperature 60 ° C., pressure 0.95 MPa, time 90 minutes) to prepare a test piece for measuring adhesion.
- the adhesion strength 180 degree peel, tension rate 300 mm / min
- the 1st adhesion layer of the laminated body (size: 200 mm x 300 mm) which has a structure shown in Table 1 was bonded together to the soda-lime glass plate as a to-be-adhered material. Then, it was left for 7 days under the conditions of a temperature of 23 ° C. and a relative humidity of 65%. After the standing, the laminate was peeled from the soda lime glass plate as the adherend, and the adhesive residue rate was calculated and evaluated based on the following formula.
- Adhesive residue rate (%) (Area of adhesive layer transferred to soda lime glass / Area of adhesive layer bonded to soda lime glass) x 100 Moreover, the laminated body peeled off from soda-lime glass was observed visually, and the presence or absence of a fracture
- the first base material layer is fixed to the soda lime glass plate with the first pressure-sensitive adhesive, and after the production of the soda lime glass plate having the base material layer, it is peeled off within 30 minutes and the adhesion strength is measured. The rate and the presence or absence of breakage were evaluated.
- the adhesion force B was less than 5 [N / 25 mm] compared to the adhesion force A
- adhesive residue was generated.
- the laminate of Example 5 in which the second base material layer was not provided and the laminate of Example 6 in which the adhesion forces C and D were less than 5 [N / 25 mm] compared to the adhesion A were broken. did.
- the laminate according to the present invention has good reworkability and can be applied to various display panels. Further, according to the present invention, it is possible to provide a display device having a laminate having good reworkability and good productivity.
- the entire contents of the specification, claims, drawings, and abstract of Japanese Patent Application No. 2012-239313 filed on October 30, 2012 are cited herein as disclosure of the specification of the present invention. Incorporate.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Laminated Bodies (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Adhesive Tapes (AREA)
Abstract
L'invention concerne un corps stratifié présentant une bonne capacité de récupération. Le corps stratifié est lié à un support et utilisé. Le corps stratifié comprend, dans l'ordre à partir d'un côté support, une première couche d'adhésif, une première couche de substrat, une seconde couche d'adhésif, et une seconde couche de substrat. Si la force d'adhérence entre le support et la première couche d'adhésif lorsque le corps stratifié a été lié à un support est définie comme étant A [N/25 mm], la force d'adhérence entre la première couche d'adhésif et la première couche de substrat est définie comme étant B [N/25 mm], la force d'adhérence entre la première couche de substrat et la seconde couche d'adhésif est définie comme étant C [N/25 mm], et la force d'adhérence entre la seconde couche d'adhésif et la seconde couche de substrat est définie comme étant D [ N/25 mm], les forces d'adhérence B, C et D étant toutes de 5 [N/25 mm] ou supérieures à la force d'adhérence A.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2014544564A JPWO2014069542A1 (ja) | 2012-10-30 | 2013-10-30 | 積層体および表示装置 |
CN201380056689.3A CN104768752B (zh) | 2012-10-30 | 2013-10-30 | 层叠体以及显示装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-239313 | 2012-10-30 | ||
JP2012239313 | 2012-10-30 |
Publications (1)
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WO2014069542A1 true WO2014069542A1 (fr) | 2014-05-08 |
Family
ID=50627442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2013/079460 WO2014069542A1 (fr) | 2012-10-30 | 2013-10-30 | Corps stratifié et dispositif d'affichage |
Country Status (3)
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JP (1) | JPWO2014069542A1 (fr) |
CN (1) | CN104768752B (fr) |
WO (1) | WO2014069542A1 (fr) |
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JP2017179242A (ja) * | 2016-03-31 | 2017-10-05 | リンテック株式会社 | 表示画面用粘着シート、積層体、表示体及び画面保護方法 |
WO2020026955A1 (fr) * | 2018-07-31 | 2020-02-06 | 株式会社有沢製作所 | Adhésif destiné à être appliqué sur un dispositif d'affichage |
KR20200074634A (ko) * | 2018-12-17 | 2020-06-25 | 엘지디스플레이 주식회사 | 스트레처블 표시장치 |
WO2021200733A1 (fr) * | 2020-03-31 | 2021-10-07 | 日東電工株式会社 | Produit optique multicouche |
WO2021200734A1 (fr) * | 2020-03-31 | 2021-10-07 | 日東電工株式会社 | Stratifié optique |
JP2021185570A (ja) * | 2015-12-25 | 2021-12-09 | 日東電工株式会社 | 有機el表示装置用粘着剤組成物、有機el表示装置用粘着剤層、有機el表示装置用粘着剤層付き偏光フィルム、及び有機el表示装置 |
JP2022003390A (ja) * | 2017-03-06 | 2022-01-11 | 日東電工株式会社 | 光学機能層付偏光フィルムおよび液晶表示装置 |
WO2022019258A1 (fr) * | 2020-07-22 | 2022-01-27 | 日東電工株式会社 | Stratifié de film polarisant |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2020105407A (ja) * | 2018-12-27 | 2020-07-09 | 日東電工株式会社 | 保護シート |
KR20210120622A (ko) * | 2020-03-27 | 2021-10-07 | 현대모비스 주식회사 | 차량 램프용 통기부재 및 이의 제조방법 |
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- 2013-10-30 CN CN201380056689.3A patent/CN104768752B/zh not_active Expired - Fee Related
- 2013-10-30 WO PCT/JP2013/079460 patent/WO2014069542A1/fr active Application Filing
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JP2022160450A (ja) * | 2015-12-25 | 2022-10-19 | 日東電工株式会社 | 有機el表示装置用粘着剤組成物、有機el表示装置用粘着剤層、有機el表示装置用粘着剤層付き偏光フィルム、及び有機el表示装置 |
JP7291277B2 (ja) | 2015-12-25 | 2023-06-14 | 日東電工株式会社 | 有機el表示装置用粘着剤組成物、有機el表示装置用粘着剤層、有機el表示装置用粘着剤層付き偏光フィルム、及び有機el表示装置 |
JP2021185570A (ja) * | 2015-12-25 | 2021-12-09 | 日東電工株式会社 | 有機el表示装置用粘着剤組成物、有機el表示装置用粘着剤層、有機el表示装置用粘着剤層付き偏光フィルム、及び有機el表示装置 |
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JP2017179242A (ja) * | 2016-03-31 | 2017-10-05 | リンテック株式会社 | 表示画面用粘着シート、積層体、表示体及び画面保護方法 |
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WO2020026955A1 (fr) * | 2018-07-31 | 2020-02-06 | 株式会社有沢製作所 | Adhésif destiné à être appliqué sur un dispositif d'affichage |
KR20200074634A (ko) * | 2018-12-17 | 2020-06-25 | 엘지디스플레이 주식회사 | 스트레처블 표시장치 |
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JP2021161264A (ja) * | 2020-03-31 | 2021-10-11 | 日東電工株式会社 | 光学積層体 |
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JP2021160242A (ja) * | 2020-03-31 | 2021-10-11 | 日東電工株式会社 | 光学積層体 |
JP7387522B2 (ja) | 2020-03-31 | 2023-11-28 | 日東電工株式会社 | 光学積層体 |
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JP7478574B2 (ja) | 2020-03-31 | 2024-05-07 | 日東電工株式会社 | 光学積層体 |
WO2021200733A1 (fr) * | 2020-03-31 | 2021-10-07 | 日東電工株式会社 | Produit optique multicouche |
JPWO2022019258A1 (fr) * | 2020-07-22 | 2022-01-27 | ||
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JP7436671B2 (ja) | 2020-07-22 | 2024-02-21 | 日東電工株式会社 | 偏光フィルム積層体 |
Also Published As
Publication number | Publication date |
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CN104768752A (zh) | 2015-07-08 |
CN104768752B (zh) | 2017-03-08 |
JPWO2014069542A1 (ja) | 2016-09-08 |
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