TWI780774B - Optical film, panel unit and display device - Google Patents
Optical film, panel unit and display device Download PDFInfo
- Publication number
- TWI780774B TWI780774B TW110121853A TW110121853A TWI780774B TW I780774 B TWI780774 B TW I780774B TW 110121853 A TW110121853 A TW 110121853A TW 110121853 A TW110121853 A TW 110121853A TW I780774 B TWI780774 B TW I780774B
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- Prior art keywords
- layer
- light
- film
- optical film
- translucent
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
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- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
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- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Laminated Bodies (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract
本發明提供於具有以複數面板單元構成之顯示面的顯示裝置中，可兼具抑制源自各面板單元間之接縫之影像品質降低之效果與充分亮度之手段。本發明有關薄膜，其包含含有粒子及著色劑，且全光線透過率為10%以上30%以下之透光性層，且使用於具有以複數面板單元構成之顯示面的顯示裝置。The present invention provides a means for suppressing image quality degradation caused by joints between each panel unit and sufficient brightness in a display device having a display surface composed of a plurality of panel units. The film of the present invention includes a light-transmitting layer containing particles and a colorant and has a total light transmittance of 10% to 30%, and is used in a display device having a display surface composed of a plurality of panel units.
Description
本發明有關於具有以複數個面板單元構成之顯示面的顯示裝置所用之光學薄膜、該顯示裝置所用之面板單元以及該顯示裝置。The present invention relates to an optical film used in a display device having a display surface composed of a plurality of panel units, a panel unit used in the display device, and the display device.
作為替代各種液晶式顯示裝置的次世代型之顯示裝置，以日本特開2018-14481號公報(對應於美國專利申請公開第2018/0019233號說明書、美國專利申請公開第2018/0331085號說明書或美國專利第2018/0331086號說明書)中記載的微型LED顯示裝置為代表之自發光型顯示裝置的開發正在進展。As a next-generation display device to replace various liquid crystal display devices, Japanese Patent Laid-Open No. 2018-14481 (corresponding to US Patent Application Publication No. 2018/0019233 specification, US Patent Application Publication No. 2018/0331085 specification or The development of self-luminous display devices represented by micro LED display devices described in Patent No. 2018/0331086) is progressing.
此等自發光型顯示體中，為了避免於安裝有成為光源之發光元件的基板等反射之光，對顯示之影像品質造成不良影響，已檢討於比包含發光元件之發光模組更於顯示面側積層吸收可見光之遮光層。In these self-illuminating displays, in order to prevent the reflected light from the substrate mounted with the light-emitting element as the light source from adversely affecting the image quality of the display, it has been examined that the light-emitting module containing the light-emitting element is more on the display surface. The side build-up layer is a light-shielding layer that absorbs visible light.
日本特開2019-204905號公報中，揭示一種自發光型顯示體，其具備於配線基板上安裝複數發光元件之發光模組、以烯烴系樹脂作為基礎樹脂且可見光透射率為5%以上70%以下之黑色密封材薄片及透明光學層(透光性層)。該自發光型顯示體中，黑色密封材薄片被覆發光元件及配線基板表面而積層於發光模組，透明光學層積層於黑色密封材薄片。而且，該文獻中揭示此種黑色密封材薄片顯示作為遮光層之良好特性，且自發光型顯示體的層構造，可比以往的自發光型顯示體更簡略化，結果，可提高自發光型顯示體之生產性。Japanese Patent Laying-Open No. 2019-204905 discloses a self-illuminating display body, which is equipped with a light-emitting module that mounts a plurality of light-emitting elements on a wiring board, uses an olefin-based resin as the base resin, and has a visible light transmittance of 5% to 70%. The following black sealing material sheet and transparent optical layer (translucent layer). In the self-luminous display body, the black sealing material sheet is laminated on the light-emitting module by covering the surface of the light-emitting element and the wiring substrate, and the transparent optical layer is laminated on the black sealing material sheet. Moreover, this document discloses that such a black sealing material sheet exhibits good properties as a light-shielding layer, and that the layer structure of a self-illuminating display can be simplified compared to conventional self-illuminating displays, and as a result, the self-illuminating display can be improved. The productivity of the body.
根據日本特開2019-204905號公報之黑色密封材薄片，當使用於具有以複數面板單元構成之顯示面的顯示裝置時，可抑制源自面板單元間之接縫的影像品質降低。然而，使用日本特開2019-204905號公報之黑色密封材薄片的顯示裝置有亮度大幅降低的問題。According to the black sealing material sheet of Japanese Patent Application Laid-Open No. 2019-204905, when used in a display device having a display surface composed of a plurality of panel units, it is possible to suppress image quality degradation originating from seams between panel units. However, the display device using the black sealing material sheet disclosed in JP-A-2019-204905 has a problem that the luminance is greatly reduced.
因此本發明之目的係提供於具有以複數面板單元構成之顯示面的顯示裝置中，可兼具抑制源自各面板單元間之的接縫之影像品質降低與充分亮度之手段。Therefore, the object of the present invention is to provide a means for suppressing image quality degradation caused by seams between panel units and providing sufficient brightness in a display device having a display surface composed of a plurality of panel units.
本發明之上述課題可藉以下手段而解決。The above-mentioned problems of the present invention can be solved by the following means.
一種光學薄膜，其包含含有粒子及著色劑，且全光線透過率為10%以上30%以下之透光性層， 且使用於具有以複數面板單元構成之顯示面的顯示裝置。 An optical film comprising a light-transmitting layer containing particles and a coloring agent and having a total light transmittance of 10% to 30%, And it is used in a display device having a display surface composed of a plurality of panel units.
本說明書中，表示範圍之「X~Y」表示「X以上Y以下」。此外，除非另有說明，否則操作及物性等係在室溫(20~25℃)/相對濕度40~50%RH的條件下測定。In this specification, "X~Y" showing a range means "more than X but less than Y". In addition, unless otherwise stated, handling and physical properties, etc. are measured under the conditions of room temperature (20~25°C)/relative humidity 40~50%RH.
又本說明書中，(共)聚合物係包括共聚物及均聚物之總稱。In addition, in this specification, a (co)polymer is a general term including a copolymer and a homopolymer.
而且，本說明書中，所謂「(甲基)丙烯酸酯」係丙烯酸酯及甲基丙烯酸酯之總稱。包含(甲基)丙烯酸等之化合物等亦同樣，係名稱中具有「甲基」的化合物及不具有「甲基」的化合物的總稱。In addition, in this specification, "(meth)acrylate" is a generic term for acrylate and methacrylate. Compounds including (meth)acrylic acid, etc. are similarly used as a generic term for compounds having "methyl" in their names and compounds not having "methyl".
下文將參照根據需要所附之圖式，說明本發明之實施形態。又，圖式說明中對相同要素賦予相同符號，並省略重複說明。且，圖式的尺寸比例就說明方便性有被誇大，而與實際比例不同之情況。Embodiments of the present invention will be described below with reference to the accompanying drawings as needed. In addition, in the description of the drawings, the same reference numerals are attached to the same elements, and repeated descriptions are omitted. In addition, the dimensional ratios in the drawings indicate that convenience is exaggerated and may be different from actual ratios.
＜透光性層A＞ 本發明之一態樣係有關一種光學薄膜，其包含含有粒子及著色劑，全光線透過率為10%以上30%以下之透光性層，且使用於具有以複數面板單元構成之顯示面的顯示裝置。根據本發明之一態樣，提供於具有以複數面板單元構成之顯示面的顯示裝置中，可兼具抑制源自各面板單元間之的接縫之影像品質降低之效果與充分亮度之手段。 <Translucent layer A> One aspect of the present invention relates to an optical film comprising a light-transmitting layer containing particles and a coloring agent and having a total light transmittance of not less than 10% and not more than 30%, and used for a display surface composed of a plurality of panel units display device. According to one aspect of the present invention, in a display device having a display surface composed of a plurality of panel units, it is possible to provide a means for suppressing degradation of image quality due to joints between each panel unit and sufficient brightness.
又本說明書中，含有粒子及著色劑，全光線透過率為10%以上30%以下之層亦稱為透光性層A。In this specification, a layer containing particles and a colorant and having a total light transmittance of not less than 10% and not more than 30% is also referred to as a translucent layer A.
本發明人等推定由本發明解決課題之機制如下。The inventors of the present invention presume that the mechanism for solving the problems by the present invention is as follows.
在具有由複數面板單元構成之顯示面的顯示裝置中，外光入射至裝置內時，該外光被安裝有成為光源的發光元件的基板等反射，產生反射光。接著，於各面板單元間之接縫，例如該反射光經過相鄰面板單元之側面的反射或折射，出射至顯示面側等，故視覺觀察到局部光的散射。而且，因此等局部光的散射，產生源自各面板單元間的接縫的影像品質降低。In a display device having a display surface composed of a plurality of panel units, when external light enters the device, the external light is reflected by a substrate or the like on which a light emitting element serving as a light source is mounted to generate reflected light. Then, at the joints between the panel units, for example, the reflected light is reflected or refracted by the side surfaces of the adjacent panel units, and then emitted to the display side, etc., so that local light scattering can be visually observed. Moreover, due to local light scattering, image quality degradation originating from joints between the panel units occurs.
日本特開2019-204905號公報之黑色密封材薄片，因具有吸收可見光的功能，故可吸收被安裝有成為光源的發光元件的基板等反射之反射光，減低朝向顯示面側之反射光，且亦減低出射之散射光。藉此，抑制源自各面板單元間之接縫的影像品質之降低。然而，日本特開2019-204905公報之黑色密封材薄片，由於吸收了自成為光源的發光元件出射之多數出射光，故於具備此薄片之面板單元或顯示裝置，亮度大幅降低。The black sealing material sheet of Japanese Patent Laid-Open No. 2019-204905 has the function of absorbing visible light, so it can absorb the reflected light reflected by the substrate on which the light-emitting element as the light source is installed, and reduce the reflected light toward the display surface side, and It also reduces the scattered light emitted. Thereby, the degradation of the image quality originating from the seam between each panel unit is suppressed. However, since the black sealing material sheet of Japanese Patent Laid-Open No. 2019-204905 absorbs most of the outgoing light emitted from the light-emitting element used as a light source, the brightness of a panel unit or a display device equipped with this sheet is greatly reduced.
另一方面，本發明中，透光性層A包含著色劑，全光線透過率為10%以上30%以下。透光性層A由於具有在適當範圍內吸收可見光的功能，故可吸收被安裝有成為光源的發光元件的基板等反射之反射光，減低朝向顯示面側之反射光，且亦減低出射之散射光。且，自成為光源之發光元件出射的出射光的吸收量亦為一定以下。由此，具備本發明之光學薄膜的面板單元或顯示裝置，可獲得充分亮度。此外，本發明中，透光性層A含有粒子。由於粒子使被安裝有成為光源的發光元件的基板等反射之反射光全體予以散射，各即使於各面板單元間的接縫產生光散射，與僅於該部分產生局部光散射之情況相比，光的散射變得不顯眼。且，由於自成為光源之發光元件出射的出射光亦某種程度被散射，故即使於各面板單元間的接縫產生光散射之情況，光的散射亦變得不顯眼。On the other hand, in the present invention, the translucent layer A contains a colorant, and has a total light transmittance of not less than 10% and not more than 30%. Since the light-transmitting layer A has the function of absorbing visible light within an appropriate range, it can absorb reflected light reflected by a substrate on which a light-emitting element as a light source is mounted, reduce reflected light toward the display surface side, and also reduce outgoing scattering Light. In addition, the absorption amount of light emitted from the light-emitting element serving as the light source is also constant or less. Thereby, a panel unit or a display device provided with the optical film of the present invention can obtain sufficient brightness. In addition, in the present invention, the translucent layer A contains particles. Since the particles scatter all the reflected light reflected by the substrate on which the light-emitting element as the light source is mounted, light scattering occurs at the joint between each panel unit, compared with the case where local light scattering occurs only in this part, Scattering of light becomes inconspicuous. Furthermore, since the light emitted from the light emitting element serving as the light source is also scattered to some extent, even if light scattering occurs at the joint between the panel units, the light scattering becomes inconspicuous.
又，上述機制係基於推測者，其對錯不影響本發明之技術範圍。In addition, the above mechanism is based on speculation, and its right or wrong does not affect the technical scope of the present invention.
(基底材料) 本發明一實施形態之透光性層A較佳包含基底材料。基底材料對薄膜賦予自支撐性，具有在薄膜中保持粒子之作用。 (base material) The translucent layer A in one embodiment of the present invention preferably includes a base material. The base material imparts self-supporting properties to the film, and has the function of holding particles in the film.
基底材料之含量未特別限制，基於光透過性之觀點，相對於透光性層A之總質量，較佳超過50質量%，更佳超過80質量%，又更佳超過90質量%。且，基底材料之含量，基於光的吸收性及光的散射性之觀點，相對於透光性層A之總質量，較佳未達100質量%。The content of the base material is not particularly limited, but it is preferably more than 50% by mass, more preferably more than 80% by mass, and more preferably more than 90% by mass relative to the total mass of the light-transmitting layer A from the viewpoint of light transmittance. In addition, the content of the base material is preferably less than 100% by mass relative to the total mass of the translucent layer A from the viewpoint of light absorption and light scattering.
基底材料未特別限制，可為無機材料，亦可為有機材料，較佳為有機材料。The base material is not particularly limited, and may be an inorganic material or an organic material, preferably an organic material.
又，透光性層A較佳為樹脂薄膜等之透光性樹脂層。所謂透光性樹脂層表示包含樹脂作為基底材料之透光性層，所謂樹脂薄膜表示包含樹脂作為基底材料之薄膜。作為基底材料之樹脂未特別限制，舉例為例如丙烯酸樹脂(例如甲基丙烯酸甲酯-丙烯酸甲酯共聚物樹脂等)、聚碳酸酯樹脂、聚烯烴樹脂(例如聚乙烯樹脂、聚丙烯樹脂等)、環烯烴樹脂(COP)、聚醯亞胺樹脂、纖維素樹脂(例如纖維素三乙酸酯、纖維素二乙酸酯、纖維素乙酸酯丙酸酯等)、聚酯樹脂(例如聚對苯二甲酸乙二酯(PET)、聚對苯二甲酸丙二酯(PTT)、聚對苯二甲酸丁二酯(PBT)、聚萘二甲酸乙二酯(PEN)、聚萘二甲酸丁二酯(PBN)等)等。該等中，基於霧度值及光學均勻度之觀點，較佳為環烯烴樹脂，基於無機粒子及著色劑(特別是顏料)之分散性的觀點，更佳為具有極性基之環烯烴樹脂。極性基之例包含羧基、羥基、烷氧基羰基、烯丙氧基羰基、胺基、醯胺基、氰基、該等基經由亞甲基等之連結基鍵結之基、以羰基、醚基、矽烷醚基、硫醚基、亞胺基等之具有極性的2價有機基作為連結基而鍵結之烴基等。該等中，較佳為具有羧基之環烯烴樹脂。又，極性基為可形成鹽之基時，極性基亦可形成鹽。Moreover, the translucent layer A is preferably a translucent resin layer such as a resin film. The term "translucent resin layer" means a translucent layer including a resin as a base material, and the term "resin film" means a film including a resin as a base material. The resin used as the base material is not particularly limited, for example, acrylic resin (such as methyl methacrylate-methyl acrylate copolymer resin, etc.), polycarbonate resin, polyolefin resin (such as polyethylene resin, polypropylene resin, etc.) , cycloolefin resin (COP), polyimide resin, cellulose resin (such as cellulose triacetate, cellulose diacetate, cellulose acetate propionate, etc.), polyester resin (such as poly Polyethylene terephthalate (PET), Polytrimethylene terephthalate (PTT), Polybutylene terephthalate (PBT), Polyethylene naphthalate (PEN), Polynaphthalate butylene glycol (PBN), etc.) etc. Among these, cycloolefin resins are preferable from the viewpoint of haze value and optical uniformity, and cycloolefin resins having polar groups are more preferable from the viewpoint of dispersibility of inorganic particles and colorants (especially pigments). Examples of polar groups include carboxyl, hydroxyl, alkoxycarbonyl, allyloxycarbonyl, amine, amido, cyano, groups where these groups are bonded via a linking group such as methylene, carbonyl, ether A hydrocarbon group bonded to a polar divalent organic group such as a silyl ether group, a sulfide group, an imine group, etc. as a linking group. Among these, a cycloolefin resin having a carboxyl group is preferable. Moreover, when a polar group is a group which can form a salt, a polar group can also form a salt.
作為環烯烴樹脂未特別限制，但較佳為以下述一般式(A)表示之環烯烴單體之(共)聚合物。The cycloolefin resin is not particularly limited, but is preferably a (co)polymer of a cycloolefin monomer represented by the following general formula (A).
一般式(A)之各R分別獨立表示氫原子、鹵素原子、經取代或無取代之碳原子數1~30之烴基或極性基。且，一般式(A)之a、b分別獨立表示0以上之整數。Each R of the general formula (A) independently represents a hydrogen atom, a halogen atom, a substituted or unsubstituted hydrocarbon group with 1 to 30 carbon atoms, or a polar group. In addition, a and b of the general formula (A) each independently represent an integer of 0 or more.
且，作為環烯烴樹脂，更佳為由下述一般式(A-1)或下述一般式(A-2)表示的環烯烴單體之(共)聚合物。In addition, as the cycloolefin resin, a (co)polymer of a cycloolefin monomer represented by the following general formula (A-1) or the following general formula (A-2) is more preferable.
首先針對以一般式(A-1)表示之環烯烴單體加以說明。First, the cycloolefin monomer represented by the general formula (A-1) will be described.
一般式(A-1)之R 1~R 4分別獨立表示氫原子、鹵素原子、經取代或非取代之碳原子數1~30之烴基或極性基。但，R 1~R 4全部為氫原子之情況除外，並無R 1與R 2同時為氫原子或R 3與R 4同時為氫原子之情況。 R 1 to R 4 in the general formula (A-1) independently represent a hydrogen atom, a halogen atom, a substituted or unsubstituted hydrocarbon group or a polar group with 1 to 30 carbon atoms. However, except for the case where all of R 1 to R 4 are hydrogen atoms, there is no case where R 1 and R 2 are hydrogen atoms at the same time or R 3 and R 4 are hydrogen atoms at the same time.
鹵素原子未特別限制，較佳為氟原子、氯原子、溴原子、碘原子。碳原子數1~30之烴基未特別限制，但較佳為碳原子數1~30之烷基。極性基未特別限制，但較佳為羧基、羥基、烷氧基羰基、烯丙氧基羰基、胺基、醯胺基、氰基、該等基經由亞甲基等之連結基鍵結之基、以羰基、醚基、矽烷醚基、硫醚基、亞胺基等之具有極性的2價有機基作為連結基而鍵結之烴基等。該等中，更佳為羧基、羥基、烷氧羰基或烯丙氧基羰基。且，基於確保溶液製膜時之溶解性之觀點，更佳為烷氧基羰基或烯丙氧基羰基。The halogen atom is not particularly limited, but is preferably a fluorine atom, chlorine atom, bromine atom, or iodine atom. The hydrocarbon group having 1 to 30 carbon atoms is not particularly limited, but is preferably an alkyl group having 1 to 30 carbon atoms. The polar group is not particularly limited, but is preferably a carboxyl group, a hydroxyl group, an alkoxycarbonyl group, an allyloxycarbonyl group, an amino group, an amido group, a cyano group, and a group in which these groups are bonded via a linking group such as a methylene group. , Hydrocarbon groups bonded with polar divalent organic groups such as carbonyl groups, ether groups, silane ether groups, thioether groups, imine groups, etc. as linking groups, etc. Among these, a carboxyl group, a hydroxyl group, an alkoxycarbonyl group or an allyloxycarbonyl group is more preferable. Furthermore, from the viewpoint of ensuring the solubility at the time of forming a film from a solution, an alkoxycarbonyl group or an allyloxycarbonyl group is more preferable.
基於確保環烯烴樹脂之溶液製膜時之溶解性之觀點，較佳R 1~R 4中之至少一者為極性基。 From the viewpoint of ensuring the solubility of cycloolefin resin solution for film formation, preferably at least one of R 1 to R 4 is a polar group.
一般式(A-1)之p表示0~2之整數。基於提高薄膜耐熱性之觀點，p較佳為1~2。其理由係p為1~2時，所得樹脂體積變高，容易提高玻璃轉移溫度之故。p in the general formula (A-1) represents an integer of 0-2. From the viewpoint of improving the heat resistance of the film, p is preferably 1-2. The reason is that when p is 1 to 2, the volume of the obtained resin becomes higher, and the glass transition temperature is easily raised.
其次，針對以一般式(A-2)表示之環烯烴單體加以說明。Next, the cycloolefin monomer represented by the general formula (A-2) will be described.
一般式(A-2)之R 5表示氫原子、碳原子數1~5個之烴基或具有碳原子數1~5個之烷基的烷基矽烷基。其中，R 5較佳為碳原子數1~3之烴基。 R 5 in the general formula (A-2) represents a hydrogen atom, a hydrocarbon group having 1 to 5 carbon atoms, or an alkylsilyl group having an alkyl group having 1 to 5 carbon atoms. Among them, R 5 is preferably a hydrocarbon group with 1 to 3 carbon atoms.
一般式(A-2)之R 6表示極性基或鹵素原子。極性基未特別限制，較佳為羧基、羥基、烷氧基羰基、烯丙氧基羰基、胺基、醯胺基或氰基。鹵素原子未特別限制，較佳為氟原子、氯原子、溴原子或碘原子。該等中，R 6較佳為極性基，更佳為羧基、羥基、烷氧基羰基或烯丙氧基羰基。且，基於確保溶液製膜時之溶解性之觀點，更佳為烷氧基羰基或烯丙氧基羰基。 R 6 in the general formula (A-2) represents a polar group or a halogen atom. The polar group is not particularly limited, and is preferably a carboxyl group, a hydroxyl group, an alkoxycarbonyl group, an allyloxycarbonyl group, an amine group, an amido group or a cyano group. The halogen atom is not particularly limited, but is preferably a fluorine atom, chlorine atom, bromine atom or iodine atom. Among them, R 6 is preferably a polar group, more preferably a carboxyl group, a hydroxyl group, an alkoxycarbonyl group or an allyloxycarbonyl group. Furthermore, from the viewpoint of ensuring the solubility at the time of forming a film from a solution, an alkoxycarbonyl group or an allyloxycarbonyl group is more preferable.
通過使用以一般式(A-2)表示之環烯烴單體，分子的對稱性降低，容易促進溶劑揮發時樹脂的擴散運動。By using the cycloolefin monomer represented by the general formula (A-2), the symmetry of the molecule is lowered, and the diffusion movement of the resin when the solvent is volatilized is easily promoted.
一般式(A-2)中，p表示0~2之整數。In the general formula (A-2), p represents an integer of 0-2.
以下顯示一般式(A-1)及(A-2)之結構具體例。Specific structural examples of general formulas (A-1) and (A-2) are shown below.
可與以一般式(A-1)或一般式(A-2)表示之環烯烴單體共聚合之共聚合性單體之例包含可與以一般式(A-1)或一般式(A-2)表示之環烯烴單體開環共聚合之共聚合性單體、可與以一般式(A-1)或一般式(A-2)表示之環烯烴單體加成共聚合之共聚合性單體。Examples of copolymerizable monomers that can be copolymerized with cycloolefin monomers represented by general formula (A-1) or general formula (A-2) include -2) Copolymerizable monomers for ring-opening copolymerization of cycloolefin monomers represented by general formula (A-1) or general formula (A-2) polymerizable monomer.
可與以一般式(A-1)或一般式(A-2)表示之環烯烴單體開環共聚合之共聚合性單體之例包含環丁烯、環戊烯、環庚烯、環辛烯、二環戊二烯等之其他環烯烴單體。Examples of the copolymerizable monomer that can be ring-opened copolymerized with the cycloolefin monomer represented by general formula (A-1) or general formula (A-2) include cyclobutene, cyclopentene, cycloheptene, cyclobutene, Other cycloolefin monomers such as octene and dicyclopentadiene.
可與以一般式(A-1)或一般式(A-2)表示之環烯烴單體加成共聚合之共聚合性單體之例，包含含不飽和雙鍵之化合物、乙烯系環狀烴化合物、(甲基)丙烯酸酯。含不飽和雙鍵之化合物之例包含碳原子數2~12(較佳2~8)之烯烴系化合物，其例包含乙烯、丙烯、丁烯。乙烯系環狀烴化合物之例包含4-乙烯基環戊烯、2-甲基-4-異丙烯基環戊烯等之乙烯基環戊烯系單體。(甲基)丙烯酸酯之例包含(甲基)丙烯酸甲酯、(甲基)丙烯酸2-乙基己酯、(甲基)丙烯酸環己酯等之碳原子數1~20之(甲基)丙烯酸烷基酯。Examples of copolymerizable monomers that can be addition-copolymerized with cycloolefin monomers represented by general formula (A-1) or general formula (A-2) include compounds containing unsaturated double bonds, vinyl cyclic Hydrocarbon compounds, (meth)acrylates. Examples of unsaturated double bond-containing compounds include olefinic compounds with 2 to 12 (preferably 2 to 8) carbon atoms, such as ethylene, propylene, and butene. Examples of vinyl-based cyclic hydrocarbon compounds include vinylcyclopentene-based monomers such as 4-vinylcyclopentene and 2-methyl-4-isopropenylcyclopentene. Examples of (meth)acrylates include (meth)acrylates with 1 to 20 carbon atoms such as methyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, and cyclohexyl (meth)acrylate. Alkyl acrylate.
源自以一般式(A-1)或一般式(A-2)表示之環烯烴單體之結構單元之含量，相對於構成環烯烴樹脂之結構單元的合計，較佳為50~100莫耳%，更佳為60~100莫耳%，又更佳為70~100莫耳%。The content of the structural unit derived from the cycloolefin monomer represented by the general formula (A-1) or general formula (A-2) is preferably 50 to 100 moles relative to the total of the structural units constituting the cycloolefin resin %, more preferably 60~100 mole%, and more preferably 70~100 mole%.
作為環烯烴樹脂較佳為以一般式(A-1)或一般式(A-2)表示之環烯烴單體均聚合或共聚合而得之聚合物，舉例為例如以下者。該等中，較佳為(1)~(3)及(5)，更佳為(3)及(5)。The cycloolefin resin is preferably a polymer obtained by homopolymerizing or copolymerizing cycloolefin monomers represented by general formula (A-1) or general formula (A-2), for example, the following. Among these, (1) to (3) and (5) are preferable, and (3) and (5) are more preferable.
(1)以一般式(A-1)或一般式(A-2)表示之環烯烴單體的開環聚合物； (2)以一般式(A-1)或一般式(A-2)表示之環烯烴單體與共聚合性單體之開環共聚物； (3)上述(1)或上述(2)之開環(共)聚合物之氫化(共)聚合物； (4)上述(1)或(2)之開環(共)聚合物藉由弗里德爾克拉夫特反應而環化後，氫化之(共)聚合物； (5)以一般式(A-1)或一般式(A-2)表示之環烯烴單體與含不飽和雙鍵之化合物的共聚物； (6)以一般式(A-1)或一般式(A-2)表示之環烯烴單體之加成型(共)聚合物及其氫化(共)聚合物； (7)以一般式(A-1)或一般式(A-2)表示之環烯烴單體與甲基丙烯酸酯或丙烯酸酯之交替共聚物。 (1) Ring-opening polymers of cycloolefin monomers represented by general formula (A-1) or general formula (A-2); (2) A ring-opening copolymer of a cycloolefin monomer represented by general formula (A-1) or general formula (A-2) and a copolymerizable monomer; (3) The hydrogenated (co)polymer of the ring-opening (co)polymer of the above (1) or the above (2); (4) The ring-opened (co)polymer of the above (1) or (2) is cyclized by Friedel-Craft reaction and then hydrogenated (co)polymer; (5) Copolymers of cycloolefin monomers represented by general formula (A-1) or general formula (A-2) and compounds containing unsaturated double bonds; (6) Addition (co)polymers of cycloolefin monomers represented by general formula (A-1) or general formula (A-2) and their hydrogenated (co)polymers; (7) Alternating copolymers of cycloolefin monomers represented by general formula (A-1) or general formula (A-2) and methacrylate or acrylate.
作為環烯烴樹脂，舉例為例如，具有以下述一般式(B-1)表示之結構單元與以下述一般式(B-2)表示之結構單元中之至少一者。該等中，基於所得環烯烴樹脂之玻璃轉移溫度高，且容易獲得高透過率之薄膜之觀點，較佳為包含以一般式(B-2)表示之結構單元的聚合物、或具有以一般式(B-1)表示之結構單元與以一般式(B-2)表示之結構單元的共聚物。As a cycloolefin resin, for example, what has at least one of the structural unit represented by the following general formula (B-1) and the structural unit represented by the following general formula (B-2) is mentioned, for example. Among these, based on the viewpoint that the obtained cycloolefin resin has a high glass transition temperature and is easy to obtain a film with high transmittance, it is preferably a polymer comprising a structural unit represented by the general formula (B-2), or a polymer having a structure unit represented by the general formula (B-2), A copolymer of a structural unit represented by formula (B-1) and a structural unit represented by general formula (B-2).
一般式(B-1)中，X係以-CH=CH-表示之基，或以-CH 2CH 2-表示之基。R 1~R 4及p分別與一般式(A-1)之R 1~R 4及p相同。 In the general formula (B-1), X is a group represented by -CH=CH-, or a group represented by -CH 2 CH 2 -. R 1 to R 4 and p are the same as R 1 to R 4 and p in general formula (A-1), respectively.
一般式(B-2)中，X係以-CH=CH-表示之基，或以-CH 2CH 2-表示之基。一般式(B-2)之R 5、R 6及p分別與一般式(A-2)之R 5、R 6及p相同。 In the general formula (B-2), X is a group represented by -CH=CH-, or a group represented by -CH 2 CH 2 -. R 5 , R 6 and p in general formula (B-2) are the same as R 5 , R 6 and p in general formula (A-2), respectively.
環烯烴樹脂之固有黏度[η] inh未特別限制，較佳為0.2～5cm 3/g，更佳為0.3～3cm 3/g，又更佳為0.4～1.5cm 3/g。環烯烴樹脂之固有黏度[η] inh可藉由JIS K 7367-1：2002測定。 The intrinsic viscosity [η] inh of the cycloolefin resin is not particularly limited, but is preferably 0.2-5 cm 3 /g, more preferably 0.3-3 cm 3 /g, still more preferably 0.4-1.5 cm 3 /g. The intrinsic viscosity [η] inh of cycloolefin resin can be measured by JIS K 7367-1:2002.
環烯烴樹脂之數平均分子量(Mn)未特別限制，較佳為8000~100000，更佳為10000~80000，又更佳為12000~50000。且環烯烴樹脂之重量平均分子量(Mw)未特別限制，較佳為20000~300000，更佳為30000~250000，又更佳為40000~200000。數平均分子量(Mn)及重量平均分子量(Mw)可藉由凝膠滲透層析法(GPC)以聚苯乙烯換算而測定。The number average molecular weight (Mn) of the cycloolefin resin is not particularly limited, preferably 8,000-100,000, more preferably 10,000-80,000, and more preferably 12,000-50,000. Moreover, the weight average molecular weight (Mw) of the cycloolefin resin is not particularly limited, but is preferably 20,000-300,000, more preferably 30,000-250,000, and more preferably 40,000-200,000. The number average molecular weight (Mn) and the weight average molecular weight (Mw) can be measured in terms of polystyrene by gel permeation chromatography (GPC).
固有黏度[η] inh、數平均分子量及重量平均分子量分別為上述範圍時，環烯烴樹脂之耐熱性、耐水性、耐藥品性、機械特性、作為薄膜之成形加工性可更良好。 When the intrinsic viscosity [η] inh , number average molecular weight, and weight average molecular weight are within the above ranges, the cycloolefin resin can have better heat resistance, water resistance, chemical resistance, mechanical properties, and formability as a film.
環烯烴樹脂之玻璃轉移溫度(Tg)未特別限制，較佳為110℃以上，更佳為110~350℃，又更佳為120~250℃，特佳為120~220℃。Tg為110℃以上時，更難以因在高溫條件下使用、塗覆、印刷等之二次加工而發生變形。另一方面，Tg為350℃以下時，成形加工更容易，樹脂因成形加工時之熱而劣化的可能性更低。環烯烴樹脂之Tg可藉由JIS K 7121-1987測定。The glass transition temperature (Tg) of the cycloolefin resin is not particularly limited, but is preferably above 110°C, more preferably 110-350°C, still more preferably 120-250°C, particularly preferably 120-220°C. When the Tg is 110°C or higher, it is more difficult to deform due to secondary processing such as use under high temperature conditions, coating, and printing. On the other hand, when Tg is 350° C. or less, molding processing is easier, and the resin is less likely to deteriorate due to heat during molding processing. Tg of cycloolefin resin can be measured by JIS K 7121-1987.
環烯烴樹脂可使用市售品，亦可使用合成品。作為市售品之例未特別限制，舉例為例如JSR股份有限公司製之ARTON(註冊商標，以下同)G(例如，ARTON G7810)、ARTON F、ARTON R及ARTON RX等。As the cycloolefin resin, a commercially available product may be used, or a synthetic product may be used. Examples of commercially available products are not particularly limited, and include, for example, ARTON (registered trademark, the same hereinafter) G (eg, ARTON G7810), ARTON F, ARTON R, and ARTON RX manufactured by JSR Co., Ltd.
環烯烴樹脂可單獨使用1種，亦可併用2種以上。A cycloolefin resin may be used individually by 1 type, and may use 2 or more types together.
此外，基底材料可單獨使用1種，亦可併用2種以上。Moreover, a base material may be used individually by 1 type, and may use 2 or more types together.
(粒子) 本發明一實施形態之透光性層A包含粒子。藉由將粒子分散於透光性層A中，而發揮使透過光學薄膜之光散射之作用。因此，透光性層A不包含粒子時，於具有以複數面板單元構成之顯示面的顯示裝置中，源自各面板單元間的接縫之影像品質降低抑制不足。 (particle) The translucent layer A of one embodiment of the present invention contains particles. By dispersing the particles in the translucent layer A, it functions to scatter the light transmitted through the optical film. Therefore, when the light-transmitting layer A does not contain particles, in a display device having a display surface composed of a plurality of panel units, suppression of degradation in image quality due to joints between each panel unit is insufficient.
又，本說明書中，粒子不包含後述之著色劑。In addition, in this specification, the particle does not contain the coloring agent mentioned later.
作為粒子未特別限定，舉例為例如有機粒子、無機粒子、有機無機複合粒子等。The particles are not particularly limited, and examples thereof include organic particles, inorganic particles, organic-inorganic composite particles, and the like.
作為有機粒子未特別限制，舉例為例如聚甲基丙烯酸甲酯珠粒、丙烯酸-苯乙烯共聚物珠粒、三聚氰胺珠粒、聚碳酸酯珠粒、苯乙烯珠粒、交聯聚苯乙烯珠粒、聚氯乙烯珠粒、苯胍胺-三聚氰胺甲醛珠粒等。The organic particles are not particularly limited, and examples thereof include polymethyl methacrylate beads, acrylic-styrene copolymer beads, melamine beads, polycarbonate beads, styrene beads, and cross-linked polystyrene beads. , PVC beads, benzoguanamine-melamine formaldehyde beads, etc.
作為無機粒子未特別限制，舉例為例如由包含選自鋯、鈦、鋁、銦、鋅、錫、銻、鈰、鈮、鎢、矽等中之至少1種之氧化物所成之無機氧化物粒子等。具體舉例為ZrO 2、ZrSiO 4、TiO 2、BaTiO 3、Al 2O 3、沸石、In 2O 3、ITO(銦錫氧化物)、ZnO、SnO 2、Sb 2O 3、CeO 2、Nb 2O 5、WO 3、氧化矽(SiO 2)等。 The inorganic particles are not particularly limited, and examples thereof include inorganic oxides containing at least one oxide selected from zirconium, titanium, aluminum, indium, zinc, tin, antimony, cerium, niobium, tungsten, silicon, etc. particles etc. Specific examples are ZrO 2 , ZrSiO 4 , TiO 2 , BaTiO 3 , Al 2 O 3 , zeolite, In 2 O 3 , ITO (indium tin oxide), ZnO, SnO 2 , Sb 2 O 3 , CeO 2 , Nb 2 O 5 , WO 3 , silicon oxide (SiO 2 ), etc.
該等中，較佳為無機粒子，更佳為無機氧化物粒子，又更佳為含矽之氧化物，特佳為氧化矽(SiO 2)。 Among them, inorganic particles are preferable, inorganic oxide particles are more preferable, silicon-containing oxides are more preferable, and silicon oxide (SiO 2 ) is particularly preferable.
且，粒子亦可具有以核-殼構造為代表之多層構造。Also, the particles may have a multilayer structure typified by a core-shell structure.
該等粒子可選擇實施表面處理而使用，或未實施表面處理而使用。These particles can optionally be used with surface treatment, or can be used without surface treatment.
進行表面處理時，作為表面處理之具體材料，舉例為氧化矽、氧化鋯等之異種無機氧化物、氫氧化鋁等之金屬氫氧化物、有機矽氧烷、硬脂酸等之有機酸等。該等表面處理材料可單獨使用1種，亦可組合使用複數種。其中，基於分散液之穩定性之觀點，作為表面處理材料，較佳為異種無機氧化物及金屬氫氧化物之至少一者，更佳為金屬氫氧化物。In the case of surface treatment, specific materials for surface treatment include heterogeneous inorganic oxides such as silicon oxide and zirconia, metal hydroxides such as aluminum hydroxide, organosiloxane, organic acids such as stearic acid, and the like. These surface treatment materials may be used individually by 1 type, and may use plural types together. Among them, from the viewpoint of the stability of the dispersion liquid, the surface treatment material is preferably at least one of a different type of inorganic oxide and a metal hydroxide, more preferably a metal hydroxide.
粒子之平均二次粒徑未特別限制，較佳為50nm以上，更佳為100nm以上，又更佳為150nm以上。若為該範圍內，源自各面板單元間的接縫之影像品質降低之抑制效果更為提高。粒子之平均二次粒徑較佳為1000nm以下，更佳為500nm以下，又更佳為300nm以下。若為該等範圍，則作為全體之圖像變不鮮明之影像品質降低之抑制效果更提高。The average secondary particle size of the particles is not particularly limited, but is preferably at least 50 nm, more preferably at least 100 nm, and more preferably at least 150 nm. If it is within this range, the effect of suppressing the degradation of image quality due to the seam between each panel unit is further enhanced. The average secondary particle diameter of the particles is preferably not more than 1000 nm, more preferably not more than 500 nm, and still more preferably not more than 300 nm. If it is within these ranges, the effect of suppressing image quality deterioration in which the image as a whole becomes blurred is further enhanced.
粒子之平均二次粒徑可藉由自層的電子顯微圖直接測量二次粒子大小之方法求出。具體而言，以透過型電子顯微鏡照片(TEM)(日立高科技股份有限公司製H-7650)測定粒子像，求出隨機選擇之100個二次粒子之等面積圓等效直徑之平均值，將該值設為平均二次粒徑。The average secondary particle size of the particles can be determined by direct measurement of the secondary particle size from the electron micrograph of the layer. Specifically, the particle image was measured with a transmission electron microscope (TEM) (H-7650 manufactured by Hitachi High-Tech Co., Ltd.), and the average value of the equivalent diameter of the equal-area circle of 100 randomly selected secondary particles was obtained. Let this value be an average secondary particle diameter.
粒子可使用市售品，亦可使用合成品。作為市售品未特別限制，舉例為例如日本AEROSIL股份有限公司製R972V等。As the particles, commercially available ones or synthetic ones may be used. It does not specifically limit as a commercial item, For example, R972V by Nippon Aerosil Co., Ltd. etc. are mentioned.
粒子可單獨使用1種，或可併用2種以上。The particles may be used alone or in combination of two or more.
透光性層A中之粒子含量未特別限制，但相對於基底材料100質量份，較佳為0.01質量份以上，更佳為0.05質量份以上，又更佳為0.1質量份以上，特佳為0.3質量份以上。若為該範圍內，源自各面板單元間之接縫的影像品質降低之抑制效果更提高。且透光性層A中粒子之含量未特別限制，但相對於基底材料100質量份，較佳為10質量份以下，更佳為5質量份以下，又更佳為1質量份以下。若為該範圍，則作為全體圖像變不鮮明之影像品質降低之抑制效果更為提高。The particle content in the light-transmitting layer A is not particularly limited, but is preferably at least 0.01 parts by mass, more preferably at least 0.05 parts by mass, and more preferably at least 0.1 parts by mass, with respect to 100 parts by mass of the base material. 0.3 parts by mass or more. If it is within this range, the effect of suppressing the degradation of image quality due to the seam between each panel unit is further enhanced. The content of the particles in the translucent layer A is not particularly limited, but is preferably not more than 10 parts by mass, more preferably not more than 5 parts by mass, and more preferably not more than 1 part by mass relative to 100 parts by mass of the base material. If it is within this range, the effect of suppressing the degradation of the image quality that causes the overall image to become unclear is further enhanced.
(著色劑) 本發明一實施形態之透光性層A包含著色劑。著色劑發揮將透光性層A著色而控制光學薄膜的全光線透過率之作用。因此，透光性層A不含著色劑時，在具有由複數面板單元構成之顯示面的顯示裝置中之源自各面板單元間之接縫的影像品質降低之抑制不足。 (Colorant) The translucent layer A which concerns on one Embodiment of this invention contains a coloring agent. The coloring agent plays a role of controlling the total light transmittance of the optical film by coloring the translucent layer A. Therefore, when the light-transmitting layer A does not contain a colorant, in a display device having a display surface composed of a plurality of panel units, suppression of image quality degradation due to joints between each panel unit is insufficient.
著色劑未特別限制，舉例為例如染料及顏料等。The coloring agent is not particularly limited, and examples thereof include dyes and pigments.
顏料未特別限制，舉例為例如以色彩指數記載之下述編號之有機顏料及無機顏料、礦物等。Pigments are not particularly limited, and examples thereof include organic pigments, inorganic pigments, and minerals with the following numbers described in the color index.
作為黑色顏料未特別限制，舉例為例如碳黑、磁性體、鐵-鈦複合氧化物黑等。此處，碳黑未特別限制，舉例為例如煙囪黑、爐黑、乙炔黑、熱黑、燈黑等。作為磁性體未特別限制，舉例為例如鐵氧體、磁鐵礦等。It does not specifically limit as a black pigment, For example, carbon black, a magnetic substance, iron-titanium composite oxide black etc. are mentioned. Here, carbon black is not particularly limited, and examples thereof include chimney black, furnace black, acetylene black, thermal black, lamp black, and the like. It does not specifically limit as a magnetic substance, For example, ferrite, magnetite, etc. are mentioned.
紅色或品紅色顏料未特別限制，舉例為例如C.I.顏料紅3、5、19、22、31、38、43、48：1、48：2、48：3、48：4、48：5、49：1、53：1、57：1、57：2、58：4、63：1、81、81：1、81：2、81：3、81：4、88、104、108、112、122、123、144、146、149、166、168、169、170、177、178、179、184、185、208、216、226、257、顏料紫3、19、23、29、30、37、50、88、顏料橙13、16、20、36、金紅石(含鉻剛玉)，石榴石(garnet)、尖晶石(spinel)等。Red or magenta pigments are not particularly limited, for example, C.I.
作為藍色或青色顏料未特別限制，舉例為例如C.I.顏料藍1、15、15：1、15：2、15：3、15：4、15：6、16、17-1、22、27、28、29、36、60、藍寶石(含鐵、鈦之剛玉)等。It is not particularly limited as a blue or cyan pigment, for example, C.I. pigment blue 1, 15, 15:1, 15:2, 15:3, 15:4, 15:6, 16, 17-1, 22, 27, 28, 29, 36, 60, sapphire (corundum containing iron and titanium), etc.
作為綠色顏料未特別限制，舉例為例如C.I.顏料綠7、26、36、50等。The green pigment is not particularly limited, and examples thereof include C.I. Pigment Green 7, 26, 36, 50 and the like.
作為黃色顏料未特別限制，舉例為例如C.I.顏料黃1、3、12、13、14、17、34、35、37、55、74、81、83、93、94、95、97、108、109、110、137、138、139、153、154、155、157、166、167、168、180、185、193、黃色藍寶石(含鎳剛玉)等。The yellow pigment is not particularly limited, and examples include C.I.
作為染料未特別限制，舉例為過去習知的染料，例如國際公開第2015/111351號段落「0057」至「0060」中記載者等。The dye is not particularly limited, and examples include conventionally known dyes, such as those described in paragraphs "0057" to "0060" of International Publication No. 2015/111351.
作為著色劑，於基底材料為樹脂時，基於對樹脂具有良好分散穩定性且耐候性優異之觀點，較佳為顏料。亦即，本發明之一實施形態之透光性層A，除了上述粒子以外，更佳進而包含顏料及樹脂。且，顏料中，基於更抑制影像顏色變化，更佳發揮本發明效果之觀點，更佳為黑色顏料，又更佳為碳黑。As the colorant, when the base material is a resin, it is preferably a pigment from the viewpoint of having good dispersion stability with respect to the resin and excellent weather resistance. That is, the translucent layer A of one embodiment of the present invention further preferably further includes a pigment and a resin in addition to the above-mentioned particles. In addition, among the pigments, black pigments are more preferable, and carbon black is more preferable from the viewpoint of suppressing the color change of the image more and exerting the effect of the present invention more.
著色劑為顏料時，顏料之平均二次粒徑未特別限制，較佳為0.1μm以上，更佳為0.2μm以上。若為該等範圍，則滑動性更良好，變得更難聚集，而更減少薄膜之全光線透過率的不均。且，顏料之平均二次粒徑未特別限制，較佳未達3μm，更佳未達2.6μm。若為該等範圍，則薄膜中之色散斑更難發生，薄膜的全光線透過率之不均勻更減小，霧度值亦降低。When the colorant is a pigment, the average secondary particle size of the pigment is not particularly limited, but is preferably 0.1 μm or more, more preferably 0.2 μm or more. If it is within these ranges, the slidability becomes better, aggregation becomes more difficult, and the unevenness of the total light transmittance of the film is further reduced. Also, the average secondary particle size of the pigment is not particularly limited, but is preferably less than 3 μm, more preferably less than 2.6 μm. If it is within these ranges, it is more difficult for the dispersion spots to occur in the film, the unevenness of the total light transmittance of the film is further reduced, and the haze value is also reduced.
顏料之平均二次粒徑可自層的電子顯微鏡照片以直接測量二次粒子大小之方法求出。具體而言，以透過型電子顯微鏡照片(TEM)(日立高科技股份有限公司至H-7650)測定粒子像，求出隨機選擇之100個二次粒子之等面積圓等效直徑之平均值，將此值設為平均二次粒徑。The average secondary particle size of the pigment can be obtained by directly measuring the secondary particle size from the electron micrograph of the layer. Specifically, the particle image was measured with a transmission electron microscope (TEM) (Hitachi High-Tech Co., Ltd. to H-7650), and the average value of the equivalent diameter of the equal-area circle of 100 randomly selected secondary particles was obtained. Let this value be the average secondary particle diameter.
著色劑可使用市售品，亦可使用合成品。作為市售品未特別限制，舉例為例如三菱化學股份有限公司製#950等。A commercial item may be used for a coloring agent, and a synthetic product may be used. Although it does not specifically limit as a commercial item, For example, Mitsubishi Chemical Corporation #950 etc. are mentioned.
著色劑可單獨使用1種，亦可併用2種以上。A coloring agent may be used individually by 1 type, and may use 2 or more types together.
透光性層A中之著色劑含量未特別限制，但相對於基底材料100質量份，較佳為0.01質量份以上，更佳為0.05質量份以上，又更佳為0.1質量份以上。若為該等範圍，則更提高源自各面板單元間之接縫的影像品質降低之抑制效果。又，透光性層A中之著色劑含量未特別限制，但相對於基底材料100質量份，較佳為10質量份以下，更佳為5質量份以下，又更佳為1質量份以下，特佳為0.6質量份以下。若為該等範圍，則亮度更提高。The colorant content in the translucent layer A is not particularly limited, but is preferably at least 0.01 parts by mass, more preferably at least 0.05 parts by mass, and still more preferably at least 0.1 parts by mass, based on 100 parts by mass of the base material. If it is in these ranges, the effect of suppressing the image quality degradation originating in the joint between each panel unit will be further enhanced. Also, the content of the coloring agent in the translucent layer A is not particularly limited, but is preferably not more than 10 parts by mass, more preferably not more than 5 parts by mass, and more preferably not more than 1 part by mass relative to 100 parts by mass of the base material. Most preferably, it is 0.6 mass part or less. If it is these ranges, brightness|luminance will improve more.
(其他成分) 本發明一實施形態之透光性層A，只要不損及本發明效果，可進一步包含上述說明成分以外之其他成分。作為其他成分未特別限制，但舉例為例如習知光學薄膜領域或習知光學用途之功能層領域中使用的各成分。具體而言，舉例為相位差調整劑、波長分散調整劑、可塑劑、紫外線吸收劑、抗氧化劑、氫鍵性溶劑、離子性界面活性劑等，但不限於該等。 (other ingredients) The translucent layer A of one embodiment of the present invention may further contain other components other than the above-described components, as long as the effects of the present invention are not impaired. The other components are not particularly limited, but are, for example, components used in the field of conventional optical thin films or the field of functional layers for conventional optical applications. Specifically, examples thereof include phase difference adjusters, wavelength dispersion adjusters, plasticizers, ultraviolet absorbers, antioxidants, hydrogen-bonding solvents, ionic surfactants, and the like, but are not limited thereto.
(全光線透過率) 本發明一實施形態之透光性層A之全光線透過率為10%以上30%以下。全光線透過率未達10%時，在具有以複數面板單元構成之顯示面的顯示裝置之亮度不足。且，全光線透過率超過30%時，具有以複數面板單元構成之顯示面的顯示裝置之源自各面板單元間之接縫的影像品質降低之抑制不足。基於源自複數各面板單元間之接縫的影像品質降低之抑制效果同時提高亮度之觀點，透光性層A之全光線透過率較佳為15%以上25%以下。 (total light transmittance) The total light transmittance of the translucent layer A according to one embodiment of the present invention is not less than 10% and not more than 30%. When the total light transmittance is less than 10%, the brightness of a display device having a display surface composed of a plurality of panel units is insufficient. In addition, when the total light transmittance exceeds 30%, the suppression of image quality degradation caused by joints between each panel unit is insufficient in a display device having a display surface composed of a plurality of panel units. The total light transmittance of the light-transmitting layer A is preferably not less than 15% and not more than 25% from the viewpoint of suppressing image quality degradation from joints between the plurality of panel units and improving luminance.
全光線透光率係使用霧度計(NDH4000，日本電色工業股份有限公司製)，依據JIS K 7361-1：1997(塑膠-透明材料之全光線透過率之試驗方法)測定。The total light transmittance was measured using a haze meter (NDH4000, manufactured by Nippon Denshoku Industries Co., Ltd.), according to JIS K 7361-1: 1997 (test method for total light transmittance of plastic-transparent materials).
(透光性層A之表面改質處理) 透光性層A可實施表面改質處理。表面改質處理之方法未特別限制，舉例為例如電暈放電處理、火焰處理、氧化處理、電漿處理等。 (Surface modification treatment of translucent layer A) The translucent layer A may be subjected to surface modification treatment. The method of surface modification treatment is not particularly limited, for example, corona discharge treatment, flame treatment, oxidation treatment, plasma treatment and the like.
(膜厚) 透光性層A之厚度未特別限制，較佳為1μm以上，更佳為3μm以上，又更佳為5μm以上，特佳為8μm以上。若為該等範圍，則具有以複數面板單元構成之顯示面的顯示裝置之源自各面板單元間之接縫的影像品質降低之抑制效果更提高。透光性層A之膜厚較佳未達50μm，更佳未達20μm，又更佳15μm以下，特佳為10μm以下。若於該範圍，則具有由複數面板單元構成之顯示面的顯示裝置中，亮度更提高。 (film thickness) The thickness of the translucent layer A is not particularly limited, but is preferably at least 1 μm, more preferably at least 3 μm, still more preferably at least 5 μm, particularly preferably at least 8 μm. If it is within these ranges, the effect of suppressing the image quality degradation originating in the seam between each panel unit of the display device which has the display surface comprised by several panel units will be further enhanced. The film thickness of the translucent layer A is preferably less than 50 μm, more preferably less than 20 μm, more preferably at most 15 μm, particularly preferably at most 10 μm. If it is within this range, the luminance will be further improved in a display device having a display surface composed of a plurality of panel units.
＜包含透光性層A與基材層之光學薄膜＞ 本發明一實施形態中，上述透光性層A可使用作為僅由該層所成之單層膜，亦可構成光學薄膜之一部分，較佳為構成光學薄膜之一部分。 <Optical film consisting of translucent layer A and substrate layer> In one embodiment of the present invention, the above-mentioned light-transmitting layer A may be used as a single-layer film consisting only of this layer, or may constitute a part of an optical film, preferably constitute a part of an optical film.
本發明之一實施形態之光學薄膜較佳進而包括其他層的基材層。基材層有助於保護透光性層A、對光學薄膜賦予機械物性、提高光學薄膜之處理適性等。且，基材層亦可為於使用時剝離之剝離薄膜。又，基材層亦可如下所述於一側或兩側具有功能層者。The optical film of one embodiment of the present invention preferably further includes a substrate layer as another layer. The substrate layer contributes to protecting the translucent layer A, imparting mechanical properties to the optical film, improving the handling suitability of the optical film, and the like. In addition, the base material layer may be a peeling film that is peeled off at the time of use. In addition, the base material layer may have a functional layer on one or both sides as described below.
作為基材層未特別限制，較佳為透光性層B。透光性層B未特別限制，只要至少可使入射光之一部分透過即可。透光性層B之全光線透過率較佳為50%以上，更佳為60%以上，又更佳為80%以上，特佳為90%以上。於該等範圍時，使用包含上述透光性層A與其他透光性層的透光性層B之光學薄膜時，於具有由複數面板單元構成之顯示面的顯示裝置中，亮度更提高。且透光性層B之全光線透過率未特別限制，但更佳為95%以下，又更佳為93%以下，特佳為91%以下。若為該範圍，則更容易滿足後述之透光性層A與透光性層B之霧度值的關係。Although it does not specifically limit as a base material layer, Translucent layer B is preferable. The translucent layer B is not particularly limited as long as at least part of the incident light can be transmitted. The total light transmittance of the translucent layer B is preferably at least 50%, more preferably at least 60%, even more preferably at least 80%, and most preferably at least 90%. In these ranges, when an optical film including the above-mentioned light-transmitting layer A and the light-transmitting layer B including another light-transmitting layer is used, the luminance is further improved in a display device having a display surface composed of a plurality of panel units. In addition, the total light transmittance of the translucent layer B is not particularly limited, but is more preferably 95% or less, more preferably 93% or less, most preferably 91% or less. If it is this range, it will be easier to satisfy the relationship of the haze value of the translucent layer A and the translucent layer B mentioned later.
全光線透過率可使用霧度計(NDH4000，日本電色工業股份有限公司製)，依據JIS K 7361-1：1997(塑膠-透明材料之全光線透過率的試驗方法)測定。The total light transmittance can be measured using a haze meter (NDH4000, manufactured by Nippon Denshoku Industries Co., Ltd.), according to JIS K 7361-1: 1997 (test method for total light transmittance of plastic-transparent materials).
本發明之一實施形態之光學薄膜，基材層係其他透光性層的透光性層B，於透光性層A上配置透光性層B，透光性層A與透光性層B在測定1層透光性層A與1層透光性層B之積層體的霧度時，自透光性層A側入射光時的值Hz(A-B)(%)，與自透光性層B側入射光時之值Hz(B-A)(%)較佳滿足Hz(A-B)＜Hz(B-A)之關係。藉由滿足該關係，可更提高在具有由複數面板單元構成之顯示面的顯示裝置中源自各面板單元間之接縫的影像品質降低之抑制。其原因推測係以透光性層A朝向發光模組側，透光性層B朝向顯示面側(即顯示裝置之視認側)而配置光學薄膜，透過光學薄膜之光更被散射，但其對錯不影響本發明之技術範圍。In an optical film according to an embodiment of the present invention, the substrate layer is a translucent layer B of another translucent layer, the translucent layer B is disposed on the translucent layer A, and the translucent layer A and the translucent layer B When measuring the haze of a laminate of one translucent layer A and one translucent layer B, the value Hz(A-B)(%) when light is incident from the translucent layer A side, and self-transmissive The value Hz(B-A)(%) of incident light on the B side of the active layer preferably satisfies the relationship of Hz(A-B)<Hz(B-A). By satisfying this relationship, in a display device having a display surface composed of a plurality of panel units, it is possible to further improve suppression of image quality degradation due to seams between the panel units. The reason is speculated that the optical film is arranged with the light-transmitting layer A facing the light-emitting module side and the light-transmitting layer B facing the display surface side (that is, the viewing side of the display device), and the light passing through the optical film is scattered, but its Mistakes do not affect the technical scope of the present invention.
霧度值可使用霧度計(NDH4000，由日本電色工業股份有限公司製)，依據JIS K 7136：2000測定。The haze value can be measured based on JIS K 7136:2000 using a haze meter (NDH4000, manufactured by Nippon Denshoku Industries Co., Ltd.).
又，本說明書中，「在透光性層A上配置透光性層B」不僅表示在透光性層A的表面上，以與透光性層A接觸之方式配置透光性層B之構成，亦包含於透光性層A與透光性層B之間，介隔其他構件，於透光性層A上配置透光性層B之構成。該等中，較佳為在透光性層A的表面上，以與透光性層A接觸之方式配置透光性層B之構成。In addition, in this specification, "disposing the translucent layer B on the translucent layer A" means not only placing the translucent layer B on the surface of the translucent layer A but also placing the translucent layer B in contact with the translucent layer A. The configuration also includes a configuration in which the translucent layer B is disposed on the translucent layer A between the translucent layer A and the translucent layer B via other members. Among these, the configuration in which the light-transmitting layer B is arranged on the surface of the light-transmitting layer A so as to be in contact with the light-transmitting layer A is preferable.
又，本發明之一實施形態中，基材層可為1層或2層以上，但較佳為一層。且，於光學薄膜僅具有一層基材層之情況，與具有兩層以上之情況，均較佳係透光性層A構成光學薄膜之一最表面的構成。Also, in one embodiment of the present invention, the substrate layer may be one layer or two or more layers, but is preferably one layer. Furthermore, when the optical film has only one substrate layer or when it has two or more layers, it is preferable that the light-transmitting layer A constitutes one of the outermost surfaces of the optical film.
(基材層之基底材料) 基材層(於基材層具有後述之功能層時，係成為基材層的母體(即基礎)之層或薄膜等)較佳包含基底材料。又，本說明書中，於以後述透光性層B等為代表之基材層具有後述之功能層時，則於其上形成功能層的層或薄膜稱為「母體」或「基礎」。 (base material of base layer) The base layer (when the base layer has a functional layer described later, it is a layer or film serving as a matrix (ie base) of the base layer) preferably includes a base material. In addition, in this specification, when a substrate layer represented by the translucent layer B described below has a functional layer described later, the layer or film on which the functional layer is formed is referred to as a "matrix" or "base".
基底材料之含量未特別限制，但基於光透過性之觀點，相對於基材層(於基材層具有後述功能層時，係成為基材層之母體(基礎)的層或薄膜等)之總質量，較佳超過50質量%，更佳超過80質量%，又更佳超過90質量%。且，基底材料之含量，基於光的吸收性及光的散射性之觀點，相對於基材層(於基材層具有後述功能層時，係成為基材層之母體(基礎)的層或薄膜等)之總質量，較佳未達100質量%。The content of the base material is not particularly limited, but based on the viewpoint of light transmission, relative to the total amount of the base layer (when the base layer has a functional layer described later, it is a layer or film that becomes the matrix (base) of the base layer, etc.) The mass is preferably more than 50% by mass, more preferably more than 80% by mass, and more preferably more than 90% by mass. Moreover, the content of the base material is based on the viewpoint of light absorption and light scattering, relative to the base layer (when the base layer has a functional layer described later, it is the layer or film that becomes the matrix (base) of the base layer etc.), preferably less than 100% by mass.
作為基材層(於基材層具有後述功能層時，係成為基材層之母體(基礎)的層或薄膜等)之基底材料，並未特別限制，可舉例為與作為上述透光性層A之基底材料舉例者相同。該等中，較佳為有機材料。The base material of the base layer (when the base layer has a functional layer described later, it is a layer or film that becomes the matrix (base) of the base layer) is not particularly limited, and can be exemplified as the above-mentioned light-transmitting layer The example of the base material of A is the same. Among these, organic materials are preferable.
又，基材層(於基材層具有後述功能層時，係成為基材層之母體(基礎)的層或薄膜等)較佳為樹脂薄膜等之樹脂層(例如透光性樹脂層)。所謂樹脂薄膜表示包含樹脂作為基底材料之薄膜。作為基底材料之樹脂亦舉例為與作為上述透光性層A之基底材料舉例者相同。該等中，基於霧度值之觀點，較佳為聚酯樹脂，更佳為聚對苯二甲酸乙二酯。Also, the substrate layer (when the substrate layer has a functional layer described later, it is a layer or film serving as a matrix (base) of the substrate layer) is preferably a resin layer such as a resin film (for example, a translucent resin layer). The term "resin film" means a film containing a resin as a base material. Examples of the resin as the base material are also the same as those exemplified as the base material of the above-mentioned light-transmitting layer A. Among these, polyester resin is preferable from the viewpoint of haze value, and polyethylene terephthalate is more preferable.
基底材料可單獨使用1種，亦可併用2種以上。A base material may be used individually by 1 type, and may use 2 or more types together.
(基材層之其他成分) 基材層(於基材層具有後述功能層時，係成為基材層之母體(基礎)的層或薄膜等)，只要不損及本發明之效果，亦可包含上述所說明之基底材料以外之其他成分。作為其他成分未特別限制，但舉例為例如於上述透光性層A所說明之粒子及著色劑。且，舉例為例如習知之光學薄膜領域及習知光學用途之功能層領域所使用之各成分。具體舉例為粒子、著色劑、相位差調整劑、波長分散調整劑、可塑劑、紫外線吸收劑、抗氧化劑、氫鍵性溶劑、離子性界面活性劑等，但不限於此。 (Other components of the substrate layer) The substrate layer (when the substrate layer has a functional layer described later, it is a layer or film that becomes the matrix (base) of the substrate layer, etc.), as long as it does not impair the effect of the present invention, it may also include other than the substrate materials described above. other ingredients. It does not specifically limit as other components, For example, the particle|grains and coloring agent demonstrated in the said translucent layer A are mentioned. Also, for example, various components used in the field of conventional optical thin films and the field of functional layers for conventional optical applications are exemplified. Specific examples include particles, colorants, phase difference adjusters, wavelength dispersion adjusters, plasticizers, ultraviolet absorbers, antioxidants, hydrogen-bonding solvents, ionic surfactants, and the like, but are not limited thereto.
(基材層之表面改質處理) 基材層可實施表面改質處理。表面改質處理之方法未特別限制，舉例為例如電暈放電處理、火焰處理、氧化處理、電漿處理等。 (Surface modification treatment of substrate layer) The substrate layer may be subjected to surface modification treatment. The method of surface modification treatment is not particularly limited, for example, corona discharge treatment, flame treatment, oxidation treatment, plasma treatment and the like.
(基材層之功能層) 基材層可於成為其母體(基礎)之層或薄膜等之一側或兩側具有功能層。更詳細而言，基材層於透光性層A側(即，於透光性層A與成為基材層之母體(基礎)之層或薄膜等之間)，或於與透光性層A相反側具有功能層。 (Functional layer of substrate layer) The substrate layer may have a functional layer on one or both sides of a layer or a film serving as its matrix (base). More specifically, the substrate layer is on the side of the translucent layer A (that is, between the translucent layer A and the layer or film that becomes the matrix (base) of the substrate layer), or between the translucent layer and the translucent layer. The side opposite to A has a functional layer.
又，本說明書中，基材層具有功能層時，係包含功能層作為基材層予以處理。因此，例如於透光性層B具有功能層時，係包含功能層作為透光性層B予以處理。Moreover, in this specification, when a base material layer has a functional layer, it is treated as a base material layer including a functional layer. Therefore, for example, when the translucent layer B has a functional layer, it is handled as the translucent layer B including the functional layer.
作為基材層之功能層未特別限制，舉例為例如光學用途中使用之功能層。具體舉例為脫模層、易接著層、抗靜電層、硬塗層、抗反射層、防眩層、阻隔層、緩衝層、易滑性層等，但不限於此。該等中，較佳為易接著層或硬塗層，更佳為易接著層。The functional layer as the substrate layer is not particularly limited, and examples include functional layers used in optical applications. Specific examples include a release layer, an easy-adhesive layer, an antistatic layer, a hard coat layer, an anti-reflection layer, an anti-glare layer, a barrier layer, a buffer layer, and an easy-slip layer, but are not limited thereto. Among these, an easily bonding layer or a hard coat layer is preferable, and an easily bonding layer is more preferable.
易接著層未特別限制，可適當使用習知之易接著層。The easy-adhesive layer is not particularly limited, and a known easy-adhesive layer can be used appropriately.
本發明一實施形態之光學薄膜中，易接著層較佳僅設於成為透光性層B之母體(基礎)的層或薄膜等之一表面上或設於兩表面上。該等中，更佳至少於成為透光性層B之母體(基礎)之層或薄膜等之透光性層A側的表面上設置易接著層。In the optical film according to one embodiment of the present invention, the easily-adhesive layer is preferably provided on only one surface of the layer or film serving as the matrix (base) of the light-transmitting layer B or on both surfaces. Among these, it is more preferable to provide an easy-adhesive layer at least on the surface of the light-transmitting layer A side of the layer or film which becomes the matrix (base) of the light-transmitting layer B.
作為硬塗層未特別限制，舉例為例如包含含脂環式烴之樹脂與以聚合物矽烷偶合劑被覆之微粒子的硬化層。設有硬塗層時，較佳於硬塗層與薄膜之間進而設置緩衝層。作為緩衝層未特別限制，舉例為例如包含與硬塗層所含之樹脂不同的樹脂與經聚合物矽烷偶合劑被覆之微粒子的層。The hard coat layer is not particularly limited, and is, for example, a hardened layer comprising an alicyclic hydrocarbon-containing resin and fine particles coated with a polymer silane coupling agent. When a hard coat layer is provided, it is preferable to further provide a buffer layer between the hard coat layer and the film. The buffer layer is not particularly limited, and is, for example, a layer made of a resin different from the resin contained in the hard coat layer and fine particles coated with a polymer silane coupling agent.
本發明一實施形態之光學薄膜中，硬塗層較佳僅設於成為透光性層B之母體(基礎)的層或薄膜之一面側，或兩表面側。該等中，更佳至少於成為透光性層B之母體(基礎)的層或薄膜等之與透光性層A相反側之面側設置硬塗層。且，又更佳為僅於成為透光性層B之母體(基礎)的層或薄膜等之與透光性層A相反側之面側設置硬塗層。In the optical film according to one embodiment of the present invention, it is preferable that the hard coat layer is provided only on one side or both sides of the layer to be the matrix (base) of the light-transmitting layer B or the film. Among them, it is more preferable to provide a hard coat layer at least on the side opposite to the light-transmitting layer A of the layer or film serving as the matrix (base) of the light-transmitting layer B. Furthermore, it is more preferable to provide a hard coat layer only on the surface side opposite to the translucent layer A of the layer or film which becomes the matrix (base) of the translucent layer B.
基材層可於一側或兩側僅具有1層功能層，亦可積層2層以上。The substrate layer may have only one functional layer on one or both sides, or two or more layers may be laminated.
基材層之功能層膜厚未特別限制，較佳未達10μm，更佳未達8μm，又更佳未達5μm，特佳未達3μm(下限超過0μm)。The film thickness of the functional layer of the substrate layer is not particularly limited, preferably less than 10 μm, more preferably less than 8 μm, more preferably less than 5 μm, most preferably less than 3 μm (the lower limit exceeds 0 μm).
(基材層之膜厚) 基材層之膜厚未特別限制，較佳為10μm以上，更佳為20μm以上，又更佳為30μm以上，特佳為50μm以上。若為該範圍，則更提高透光性層A之保護效果、對光學薄膜賦予機械物性之效果、光學薄膜之處理適性等。且，基材層為透光性層B時，具有由複數面板單元構成之顯示面的顯示裝置之源各自面板單元間之接縫的影像品質降低之抑制更為提高。且，基材層膜厚較佳為500μm以下，更佳為200μm以下，又更佳為100μm以下，特佳為80μm以下。若為該範圍，則基材層為透光性層時，在具有由複數面板單元構成之顯示面的顯示裝置中，亮度更為提高。 (Film thickness of substrate layer) The film thickness of the substrate layer is not particularly limited, but is preferably at least 10 μm, more preferably at least 20 μm, still more preferably at least 30 μm, particularly preferably at least 50 μm. If it is this range, the protective effect of the translucent layer A, the effect of imparting mechanical physical properties to an optical film, the handling suitability of an optical film, etc. will be further improved. In addition, when the base material layer is the light-transmitting layer B, the suppression of image quality degradation at the joints between the respective panel units of a display device having a display surface composed of a plurality of panel units is further enhanced. Furthermore, the film thickness of the substrate layer is preferably not more than 500 μm, more preferably not more than 200 μm, more preferably not more than 100 μm, particularly preferably not more than 80 μm. If it is this range, when a base material layer is a light-transmitting layer, in the display device which has the display surface which consists of several panel units, brightness will improve more.
本發明一實施形態中，透光性層A之膜厚較佳薄於基材層膜厚。In one embodiment of the present invention, the film thickness of the translucent layer A is preferably thinner than that of the substrate layer.
(基材層之例) 作為基材層，可使用市售品。作為市售產品未特別限制，於基材層為透光性層B時，舉例為例如日本Zeon股份有限公司製的Zeonor(註冊商標)ZF16、東洋紡股份有限公司製的COSMO SHINE(註冊商標)A4300等。 (Example of substrate layer) As a base material layer, a commercial item can be used. The commercially available product is not particularly limited, and when the substrate layer is the translucent layer B, for example, Zeonor (registered trademark) ZF16 manufactured by Japan Zeon Co., Ltd., COSMO SHINE (registered trademark) A4300 manufactured by Toyobo Co., Ltd. Wait.
＜其他功能層＞ 本發明一實施形態之光學薄膜亦可進而具有透光性層A及基材層以外之功能層，亦即上述基材層的功能層以外之其他功能層。例如，本發明一實施形態之光學薄膜若有必要，亦可於透光性層A之一側或兩側進而具有其他功能層。該其他功能層之細節亦與上述基材層之功能層的說明相同。 ＜Other functional layers＞ The optical film according to one embodiment of the present invention may further have functional layers other than the translucent layer A and the substrate layer, that is, other functional layers than the functional layer of the substrate layer described above. For example, the optical film according to one embodiment of the present invention may further have other functional layers on one side or both sides of the translucent layer A, if necessary. The details of the other functional layers are also the same as those described above for the functional layers of the substrate layer.
且本發明一實施形態之光學薄膜中，於透光性層A之單側或兩側具有其他功能層時，透光性層A與設於透光性層A之單側或兩側之其他功能層的積層體之全光線透過率較佳為10%以上30%以下，更佳為15%以上25%以下。全光線透過率可使用霧度計(NDH4000，日本電色工業股份有限公司製造)，依據JIS K 7361-1：1997(塑膠-透明材料全光線透過率之試驗方法)測定。And in the optical film according to one embodiment of the present invention, when there are other functional layers on one or both sides of the light-transmitting layer A, the light-transmitting layer A and the other functional layers provided on one or both sides of the light-transmitting layer A The total light transmittance of the functional layer laminate is preferably from 10% to 30%, more preferably from 15% to 25%. The total light transmittance can be measured using a haze meter (NDH4000, manufactured by Nippon Denshoku Industries Co., Ltd.), according to JIS K 7361-1: 1997 (test method for total light transmittance of plastic-transparent materials).
又，本發明一實施形態之光學薄膜中，於透光性層A之單側或兩側具有其他功能層的時，測定一層透光性層A、一層透光性層B及設於透光性層A之單側或兩側之其他功能層的積層體之霧度時，自透光性層A側入射光時的值Hz(A-B)(%)與自透光性層B側入射光時之值Hz(B-A)(%)較佳滿足Hz(A-B)＜Hz(B-A)之關係。霧度值可使用霧度計(NDH4000，日本電色工業股份有限公司製)，依據JIS K 7136：2000測定。In addition, in the optical film according to one embodiment of the present invention, when there are other functional layers on one side or both sides of the light-transmitting layer A, measure one layer of light-transmitting layer A, one layer of light-transmitting layer B and the For the haze of the laminate of other functional layers on one side or both sides of the transparent layer A, the value Hz(A-B)(%) when the light is incident from the side of the transparent layer A and the value of the incident light from the side of the transparent layer B The value of Hz(B-A)(%) preferably satisfies the relationship of Hz(A-B)<Hz(B-A). The haze value can be measured based on JIS K 7136:2000 using a haze meter (NDH4000, manufactured by Nippon Denshoku Industries Co., Ltd.).
＜薄膜之構成例＞
圖1(A)~(C)分別表示本發明一實施形態所用之薄膜的構成例。圖1(A)表示僅由透光性層A 1所成之單層薄膜。且，圖1(B)表示由透光性層A 1與透光性層B 3積層而成之積層薄膜2。圖1(B)中，透光性層A 1構成一最表面，透光性層B 3構成另一最表面，在透光性層A 1表面上，以與透光性層A 1接觸的方式配置透光性層B 3。例如，較佳透光性層B具有易接著層(未圖示)，於透光性層A 1之表面上，以與透光性層A 1接觸之方式配置具有易接著層(未圖示)之透光性層B 3。此外，圖1(C)表示透光性層A 1與透光性層B 3積層而成之積層薄膜2，進而透光性層B 3具有構成與透光性層A 1側相反側之面的硬塗層4之薄膜。在圖1(C)中，透光性層A 1構成一最表面，於透光性層A1之表面上，以與透光性層A 1接觸之方式配置透光性層B 3。例如，透光性層B具有易接著層(未圖示)，於透光性層A1之表面上，以與透光性層A 1接觸之方式配置具有易接著層(未圖示)之透光性層B 3。且亦較佳為例如於具有易接著層(未圖示)之透光性層B 3的易接著層(未圖示)上，形成硬塗層4。又圖1(C)中，3'表示成為透光性層B 3之母體(基礎)的層或薄膜。
＜Example of film composition＞
1(A) to (C) respectively show configuration examples of films used in one embodiment of the present invention. FIG. 1(A) shows a single-layer film composed of only the light-transmitting layer A1. Moreover, FIG. 1(B) shows the
＜薄膜之製造方法＞ 本發明一實施形態之光學薄膜之製造方法未特別限制，可使用習知的薄膜製造方法。舉例為例如塗佈法、溶液澆鑄法、熔融澆鑄法、氣相成膜法等。該等中，較佳為具有下述步驟之方法：1)獲得透光性層A形成塗佈液之塗佈液調製步驟，2)將所得透光性層A形成塗佈液賦予至支撐體表面之塗膜形成步驟，3)自所賦予之透光性層A形成用塗佈液之塗膜去除溶劑，形成透光性層A之乾燥步驟。 ＜Manufacturing method of thin film＞ The manufacturing method of the optical thin film according to one embodiment of the present invention is not particularly limited, and known thin film manufacturing methods can be used. For example, a coating method, a solution casting method, a melt casting method, a vapor phase film forming method, etc. are mentioned. Among them, a method having the steps of: 1) preparing a coating solution for obtaining a coating solution for forming a translucent layer A, and 2) applying the obtained coating solution for forming a translucent layer A to a support is preferred. The coating film forming step on the surface, 3) The drying step of forming the translucent layer A by removing the solvent from the coating film of the applied coating solution for forming the translucent layer A.
此處，於上述支撐體為基材層(例如透光性層B)時，藉由該製造方法，可製造包含透光性層A與基材層之積層薄膜。Here, when the above-mentioned support is a base material layer (for example, the translucent layer B), a laminated film including the translucent layer A and the base material layer can be produced by this production method.
1)塗佈液調製步驟 本步驟中，調製包含上述透光性層A所說明之粒子、上述透光性層A所說明之著色劑與溶劑之透光性層A形成用塗佈液。透光性層A形成用塗佈液中，若有必要，可進而含有基底材料(例如樹脂)或其他成分。 1) Coating liquid preparation steps In this step, a coating solution for forming a light-transmitting layer A containing the particles described above for the light-transmitting layer A, the colorant described above for the light-transmitting layer A, and a solvent is prepared. The coating liquid for forming the translucent layer A may further contain a base material (for example, resin) or other components, if necessary.
透光性層A形成用塗佈液較佳藉由進行粒子分散液之調製及著色劑分散液或著色劑溶液之調製，將該等分散液或溶液與溶劑、根據必要之基底材料及根據必要之其他成分混合而調製。粒子分散液之製備及著色劑分散液或著色劑溶液未特別限制，較佳使用作為以下透光性層A形成用塗佈液中使用之溶劑的例而舉例者。且，粒子分散液之調製及著色劑分散液或著色劑溶液之調製較佳進行過濾。過濾時，可適當使用習知過濾裝置。The coating liquid for forming the translucent layer A is preferably prepared by preparing a particle dispersion liquid and a colorant dispersion liquid or a colorant solution, and mixing these dispersion liquids or solutions with solvents, base materials as necessary, and as necessary Other ingredients are mixed and prepared. The preparation of the particle dispersion liquid and the colorant dispersion liquid or colorant solution are not particularly limited, and those exemplified as examples of the solvent used in the coating liquid for forming the translucent layer A below are preferably used. Furthermore, the preparation of the particle dispersion and the preparation of the colorant dispersion or colorant solution are preferably filtered. When filtering, a known filtering device can be suitably used.
透光性層A形成用塗佈液所用之溶劑未特別限制，舉例為例如氯仿、二氯甲烷等氯系溶劑，甲醇、乙醇、丙醇、正丁醇、2-丁醇、第三丁醇、環己醇等之醇類，甲基乙基酮、甲基異丁基酮、丙酮等之酮類，乙酸乙酯、乙酸甲酯、乳酸乙酯、乙酸異丙酯、乙酸戊酯、丁酸乙酯等之酯類，二醇醚類(丙二醇單(C1~C4)烷基醚(具體而言為丙二醇單甲醚(PGME)、丙二醇單***、丙二醇單正丙醚、丙二醇單異丙醚、丙二醇單丁基醚等)，丙二醇單(C1~C4)烷基醚酯(丙二醇單甲醚乙酸酯、丙二醇單***乙酸酯)、甲苯、苯、環己烷、正己烷等之烴類。該等中，基於容易溶解基底材料、沸點低、容易提高乾燥速度及生產率之觀點，較佳包含氯系溶劑、醇類、酮類，更佳包含氯系溶劑。The solvent used for the coating solution for forming the translucent layer A is not particularly limited, and examples include chlorine-based solvents such as chloroform and methylene chloride, methanol, ethanol, propanol, n-butanol, 2-butanol, and tert-butanol. , cyclohexanol and other alcohols, methyl ethyl ketone, methyl isobutyl ketone, acetone and other ketones, ethyl acetate, methyl acetate, ethyl lactate, isopropyl acetate, amyl acetate, butyl acetate Esters such as ethyl acetate, glycol ethers (propylene glycol mono(C1~C4) alkyl ethers (specifically, propylene glycol monomethyl ether (PGME), propylene glycol monoethyl ether, propylene glycol mono-n-propyl ether, propylene glycol monoisopropyl ether, propylene glycol monobutyl ether, etc.), propylene glycol mono(C1~C4) alkyl ether esters (propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate), toluene, benzene, cyclohexane, n-hexane, etc. Hydrocarbons. Among these, chlorine-based solvents, alcohols, and ketones are preferably contained, and chlorine-based solvents are more preferably contained, from the viewpoint of easily dissolving the base material, low boiling point, and easy improvement of drying speed and productivity.
又，基於容易形成平面性高的透光性層A之觀點，較佳包含氯系溶劑、醇類、酮類。作為氯系溶劑較佳為二氯甲烷。作為醇類較佳為甲醇或乙醇，更佳為乙醇。作為酮類較佳為甲基乙基酮或丙酮，更佳為甲基乙基酮。亦即，特佳為包含二氯甲烷與乙醇及甲基乙基酮中之至少一者。Moreover, it is preferable to contain chlorine-based solvents, alcohols, and ketones from a viewpoint of being easy to form the light-transmitting layer A with high planarity. The chlorine-based solvent is preferably dichloromethane. The alcohol is preferably methanol or ethanol, more preferably ethanol. The ketones are preferably methyl ethyl ketone or acetone, more preferably methyl ethyl ketone. That is, it is particularly preferable to include at least one of dichloromethane, ethanol, and methyl ethyl ketone.
溶劑包含氯系溶劑與其他溶劑時，氯系溶劑之含有比率未特別限制，但基於兼具乾燥速度與平面性之觀點，較佳氯系溶劑/其他溶劑=未達100/超過0~60/40(質量比)，更佳為99.9/0.1~90/10(質量比)，又更佳為99.5/0.5~99/1 (質量比)。氯系溶劑之比例適度多時，容易提高乾燥性及生產性。When the solvent contains chlorine-based solvents and other solvents, the content ratio of chlorine-based solvents is not particularly limited, but based on the viewpoint of both drying speed and planarity, preferably chlorine-based solvents/other solvents = less than 100/more than 0~60/ 40 (mass ratio), more preferably 99.9/0.1~90/10 (mass ratio), and more preferably 99.5/0.5~99/1 (mass ratio). When the ratio of the chlorine-based solvent is moderately high, it is easy to improve the dryness and productivity.
透光性層A形成用塗佈液中之基底材料濃度，基於容易將黏度調整於適當範圍之觀點，較佳為1~20質量%。此外，基於減少塗膜乾燥時之收縮量之觀點，透光性層A形成用塗佈液中之基底材料濃度更佳為超過5質量%且20質量%以下，更佳超過5質量%且15質量%以下。The concentration of the base material in the coating solution for forming the translucent layer A is preferably 1 to 20% by mass from the viewpoint of easy adjustment of the viscosity to an appropriate range. In addition, from the viewpoint of reducing shrinkage when the coating film is dried, the base material concentration in the coating solution for forming the translucent layer A is more preferably more than 5% by mass and 20% by mass or less, more preferably more than 5% by mass and 15% by mass. Mass% or less.
透光性層A形成用塗佈液、粒子分散液之調製、著色劑分散液或著色劑溶液等之各種分散液或溶液之調製中，混合條件未特別限制。作為混合溫度，可於室溫混合，且為了提高溶解性，亦可邊加熱邊混合。且，作為混合時間亦未特別限制，在混合基底材料時，較佳為使基底材料完全溶解之時間。且，混合時，可適當使用習知混合裝置。The mixing conditions are not particularly limited in the preparation of the coating liquid for forming the translucent layer A, the preparation of the particle dispersion liquid, and the preparation of various dispersion liquids or solutions such as the colorant dispersion liquid or the colorant solution. The mixing temperature may be mixed at room temperature, and may be mixed while heating in order to improve solubility. In addition, the mixing time is not particularly limited, but when mixing the base material, it is preferably the time for completely dissolving the base material. And, when mixing, a known mixing device can be suitably used.
透光性層A形成用塗佈液之黏度未特別限制，較佳為5~5000 mPa・s。透光性層A形成用塗佈液之黏度為5mPa・s以上時，更容易形成適度厚度的層。且，透光性層A形成用塗佈液之黏度為5000 mPa・s以下時，可更抑制因溶液黏度上升而發生厚度不均。基於同樣觀點，透光性層A形成用塗佈液之黏度更佳為100~1000mPa・s。該黏度可於25℃以E型黏度計測定。The viscosity of the coating liquid for forming the translucent layer A is not particularly limited, but is preferably 5 to 5000 mPa·s. When the viscosity of the coating liquid for forming the translucent layer A is 5 mPa·s or more, it is easier to form a layer with an appropriate thickness. In addition, when the viscosity of the coating liquid for forming the translucent layer A is 5000 mPa·s or less, it is possible to further suppress occurrence of thickness unevenness due to an increase in the viscosity of the solution. Based on the same viewpoint, the viscosity of the coating solution for forming the translucent layer A is more preferably 100 to 1000 mPa·s. The viscosity can be measured with an E-type viscometer at 25°C.
2)塗膜形成步驟 此步驟係將所得透光性層A形成用塗佈液賦予至支撐體表面。具體而言，將所得透光性層A形成用塗佈液塗佈於支撐體表面。 2) Coating film formation step In this step, the obtained coating liquid for forming the translucent layer A is applied to the surface of the support. Specifically, the obtained coating liquid for forming the translucent layer A is coated on the surface of the support.
透光性層A形成用塗佈液之塗佈方法未特別限制，可使用習知塗佈方法。舉例為例如背塗法、凹版塗佈法、旋塗法、線棒塗佈法、輥塗法等。該等中，基於可形成薄且均勻厚度之塗膜之觀點，較佳為背塗法。The coating method of the coating solution for forming the translucent layer A is not particularly limited, and a known coating method can be used. Examples thereof include back coating, gravure coating, spin coating, wire bar coating, roll coating and the like. Among them, the back coating method is preferable from the viewpoint of being able to form a thin coating film with a uniform thickness.
製造積層薄膜時，如前述，較佳使用基材層作為支撐體。基材層之細節如上所說明。且，使用基材層作為支撐體時，基材層具有功能層(例如易接著層等)，且亦較佳在形成有該功能層之面上賦予透光性層A形成用塗佈液。When producing a laminated film, as described above, it is preferable to use a substrate layer as a support. The details of the substrate layer are as described above. Moreover, when using a base material layer as a support body, it is also preferable to apply the coating liquid for translucent layer A formation to the surface on which the base material layer has a functional layer (for example, an easy-adhesive layer etc.) on which the functional layer was formed.
3)乾燥步驟 本步驟係自賦予至支撐體的透光性層A形成用塗佈液之塗膜去除溶劑，形成透光性層A。具體而言，使賦予至支撐體之透光性層A形成用塗佈液之塗膜乾燥。 3) Drying step In this step, the solvent is removed from the coating film of the coating solution for forming a light-transmitting layer A provided to the support to form the light-transmitting layer A. Specifically, the coating film of the coating liquid for forming the translucent layer A provided to the support is dried.
透光性層A形成用塗佈液之塗佈方法未特別限制，可以使用習知的乾燥方法。舉例為例如藉由吹風或加熱之方法等。該等中，基於易於抑制捲曲等之觀點，較佳為藉由吹風之方法。The coating method of the coating liquid for forming the translucent layer A is not particularly limited, and a known drying method can be used. For example, methods such as blowing or heating are used. Among them, the method by air blowing is preferable from the viewpoint of easily suppressing curls and the like.
塗膜之乾燥速度未特別限制，較佳為0.0015～0.05kg/hr・m 2，更佳為0.002～0.05 kg/hr・m 2。又所謂乾燥速度係以每單位時間、每單位面積蒸發的溶劑質量表示。乾燥速度通常可藉由乾燥溫度而調整。且乾燥溫度未特別限制，較佳相對於所使用之溶劑的沸點Tb為(Tb-50)+(Tb+50)℃，例如較佳為50~200℃。 The drying rate of the coating film is not particularly limited, but is preferably 0.0015-0.05 kg/hr·m 2 , more preferably 0.002-0.05 kg/hr·m 2 . The so-called drying speed is expressed by the mass of solvent evaporated per unit time and per unit area. Drying speed can usually be adjusted by drying temperature. And the drying temperature is not particularly limited, preferably relative to the boiling point Tb of the solvent used is (Tb-50)+(Tb+50)°C, for example, preferably 50-200°C.
例如，本步驟之後，藉由自支撐體剝離透光性層A，可獲得僅由透光性層A所成之單層薄膜。For example, after this step, by peeling off the light-transmitting layer A from the support, a single-layer thin film consisting of only the light-transmitting layer A can be obtained.
此外，例如使用基材層作為支撐體時，於本步驟之後，基材層形成之結果，成為形成包含透光性層A與基材層之積層薄膜。該情況下，無需自基材層剝離透光性層A，可直接使用作為積層薄膜。特別是僅由基材層為前述之母體(基礎)的層或薄膜等所成之透光性層B時，或為具有上述功能層(例如易接著層等)之透光性層B時，亦可不剝離透光性層A，而直接使用作為光學薄膜。In addition, for example, when using a base material layer as a support body, after this step, as a result of forming a base material layer, a laminated film containing the translucent layer A and a base material layer is formed. In this case, it is not necessary to peel the translucent layer A from the base material layer, and it can be used as a laminated film as it is. In particular, when the substrate layer is only the light-transmitting layer B formed of the aforementioned matrix (base) layer or film, or the light-transmitting layer B having the above-mentioned functional layer (such as an easy-to-adhesive layer, etc.), It can also be used as an optical film without peeling the translucent layer A.
4)捲取步驟 本發明之一實施形態之光學薄膜可為帶狀。因此，光學薄膜之製造方法亦可進而包含4)將帶狀光學薄膜捲繞成捲筒狀作成捲筒體之捲取步驟。 4) Coiling step The optical film of one embodiment of the present invention may be in the shape of a tape. Therefore, the manufacturing method of the optical film may further include 4) a winding step of winding the strip-shaped optical film into a roll to form a roll body.
本步驟中，係將所得之帶狀之透光性層A、透光性層A與基材層之積層體、或根據需要形成其他功能層者，於垂直於其寬度方向的方向捲取為捲筒狀，作成捲筒體。In this step, the strip-shaped light-transmitting layer A obtained, the laminate of the light-transmitting layer A and the substrate layer, or other functional layers as required are wound up in a direction perpendicular to the width direction. Roll shape, made into a roll body.
帶狀光學薄膜之長度未特別限制，較佳為例如100~10000m左右。且，帶狀光學薄膜之寬度較佳為1m以上，更佳為1.3~4m。The length of the strip-shaped optical film is not particularly limited, but is preferably about 100 to 10000 m, for example. Furthermore, the width of the strip-shaped optical film is preferably at least 1 m, more preferably 1.3 to 4 m.
＜薄膜之製造裝置＞ 本發明一實施形態之光學薄膜未特別限制，例如可藉由圖2所示之製造裝置製造。 ＜Film manufacturing equipment＞ The optical film according to one embodiment of the present invention is not particularly limited, and can be manufactured, for example, by the manufacturing device shown in FIG. 2 .
圖2係製造本發明一實施形態之光學薄膜的製造裝置200的示意圖。製造裝置200包含供給部210、塗佈部220、乾燥部230、冷卻部240及捲取部250。a~d表示輸送支撐體110之輸送輥。FIG. 2 is a schematic diagram of a
供給部210具有用於將捲繞於捲芯之帶狀支撐體110之捲筒體201捲出之捲出裝置(未圖示)。The
塗佈部220係塗佈裝置，具有保持支撐體110之背襯輥221、將透光性層A形成用塗佈液塗佈於由背襯輥221保持之支撐體110上之塗佈頭222、及設於塗佈頭222上游側之減壓室223。The
自塗佈頭222噴出之透光性層A形成用塗佈液之流量可藉由未圖示之泵調整。自塗佈頭222噴出之透光性層A形成用塗佈液之流量，係設定為於以預先調整之塗佈頭222的條件下連續塗佈時，可穩定形成特定膜厚之塗佈層的量。The flow rate of the coating liquid for forming the translucent layer A ejected from the
減壓室223係用於使塗佈時來自塗佈頭222之透光性層A形成用塗佈液與支撐體110之間形成之珠液(塗佈液積存)穩定化之機構，可調整減壓度。減壓室223連接於減壓鼓風機(未圖示)，以使內部減壓。減壓室223處於無空氣洩漏之狀態且與背襯輥之間的間隙亦調整為狹窄，以可形成穩定的塗佈液珠液。The
乾燥部230係用於使塗佈於支撐體110表面之塗膜乾燥之乾燥裝置，具有乾燥室231、乾燥用氣體之導入口232及排出口233。乾燥風之溫度及風量係根據塗膜種類及支撐體110種類適當決定。藉由設定乾燥部230之乾燥風的溫度及風量、乾燥時間等之條件，可調整乾燥後之塗膜的殘留溶劑量。乾燥後之塗膜的殘留溶劑量可藉由比較乾燥後塗膜之單位質量與該塗膜經充分乾燥後之質量而測定。The drying
冷卻部240將具有經乾燥部230乾燥所得之塗膜(透光性層A(未圖示))之支撐體110的溫度冷卻，並調整至適當溫度。冷卻部240具有冷卻室241、冷卻風入口242及冷卻風出口243。冷卻風的溫度及風量係根據塗膜種類及支撐體110種類而適當決定。且即使未設置冷卻部240，若能成為適當冷卻溫度，則亦可無冷卻部240。The
捲取部250係用以將形成有透光性層A(未圖示)之支撐體110(積層體100)捲取而獲得捲筒體251之捲取裝置(未圖示)。The winding
又製造積層薄膜時，如前述，較佳使用基材層(例如透光性層B)作為支撐體110。該情況下，透光性層A與支撐體之積層體100成為積層薄膜。When manufacturing a laminated film, as mentioned above, it is preferable to use a base material layer (for example, the light-transmitting layer B) as the
＜用途＞ 本發明一實施形態之光學薄膜係使用於具有由複數面板單元構成之顯示面的顯示裝置。本發明一實施形態之光學薄膜未特別限制，例如可較佳地應用於以下面板單元及顯示裝置之詳細說明中舉例者。 ＜Use＞ The optical film according to one embodiment of the present invention is used for a display device having a display surface composed of a plurality of panel units. The optical film of an embodiment of the present invention is not particularly limited, for example, it can be preferably applied to the following detailed descriptions of the panel unit and the display device.
(面板單元及顯示裝置) 上述光學薄膜所應用之面板單元及含其之顯示裝置未特別限制，較佳為自發光型面板單元及具有由其構成之顯示面的顯示裝置。 (panel unit and display device) The panel unit to which the optical film is applied and the display device containing it are not particularly limited, and it is preferably a self-luminous panel unit and a display device having a display surface composed of it.
本發明一實施形態中，上述光學薄膜更佳使用於具有由具有發光模組之面板單元構成的顯示面之顯示裝置。亦即，本發明之另一態樣亦可說是有關一種面板單元，其具有發光模組與較發光模組更配置於顯示面側(亦即顯示器裝置之視認側)之上述光學薄膜，且使用於具有以複數面板單元構成之顯示面的顯示裝置。In one embodiment of the present invention, the above-mentioned optical film is preferably used in a display device having a display surface composed of a panel unit having a light-emitting module. That is, another aspect of the present invention can also be said to relate to a panel unit, which has a light-emitting module and the above-mentioned optical film disposed on the display surface side (that is, the viewing side of the display device) than the light-emitting module, and It is used in a display device with a display surface composed of a plurality of panel units.
又，本發明一實施形態中，上述光學薄膜包含上述透光性層A及上述基材層(較佳為透光性層B)時，在比上述透光性層A更靠顯示面側配置上述基材層(較佳為透光性層B)，上述光學薄膜更佳使用於具有由具有發光模組之面板單元構成之顯示面的顯示裝置。亦即，本發明之另一態樣亦可說是有關一種面板單元，其具有發光模組與較發光模組更配置於顯示面側之上述光學薄膜，且使用於具有以於較上述透光性層A更靠顯示面側配置有上述基材層(較佳為透光性層B)之複數面板單元構成之顯示面的顯示裝置。此時，較佳透光性層A構成光學薄膜之一最表面，且配置為光學薄膜之透光性層A側的面與發光模組彼此對向。Moreover, in one embodiment of the present invention, when the above-mentioned optical film includes the above-mentioned light-transmitting layer A and the above-mentioned base material layer (preferably, the light-transmitting layer B), the above-mentioned light-transmitting layer A is disposed closer to the display surface side. The aforementioned substrate layer (preferably the translucent layer B) and the aforementioned optical film are more preferably used in a display device having a display surface composed of a panel unit having a light-emitting module. That is, another aspect of the present invention can also be said to relate to a panel unit which has a light-emitting module and the above-mentioned optical film arranged on the display surface side more than the light-emitting module, and is used for having a light-transmitting A display device with a display surface composed of a plurality of panel units with the above-mentioned base material layer (preferably light-transmitting layer B) arranged on the display surface side of the transparent layer A. At this time, preferably, the light-transmitting layer A constitutes one of the outermost surfaces of the optical film, and is arranged such that the surface of the optical film on the side of the light-transmitting layer A faces the light-emitting module.
本發明一實施形態中，面板單元未特別限制，可使用例如具有習知發光模組者。該等中，較佳為將微小且多數發光元件以矩陣狀安裝於配線基板上，藉由連接於該等之發光控制手段選擇性地使各發光元件發光，可將視覺資訊藉由各發光元件之閃爍直接顯示於顯示畫面上之發光模組。且，發光模組中所含之發光元件更佳為LED元件。亦即發光模組更佳係發光元件為LED元件的LED模組。In an embodiment of the present invention, the panel unit is not particularly limited, for example, a conventional light emitting module can be used. Among them, it is preferable to mount tiny and many light-emitting elements in a matrix on a wiring board, and to selectively make each light-emitting element emit light by connecting to these light-emitting control means, so that visual information can be transmitted through each light-emitting element The flickering is directly displayed on the light-emitting module on the display screen. Moreover, the light emitting elements contained in the light emitting module are more preferably LED elements. That is to say, the light-emitting module is more preferably an LED module in which the light-emitting element is an LED element.
面板單元包含發光模組與上述光學薄膜時，較佳發光模組與光學薄膜藉由接著劑貼合。貼合積層薄膜時，較佳將基材層(較佳為透光性層B)設於較上述透光性層A更靠顯示面側。而且，較佳發光模組與上述積層薄膜之較上述基材層(較佳為透光性層B)更靠上述透光性層A側之最表面以接著劑貼合。此時，透光性層A構成光學薄膜之一最表面，光學薄膜之透光性層A側的面較佳與發光模組彼此面向之方式予以貼合。作為接著劑並未特別限制，可使用習知接著劑，舉例為例如感壓接著劑、熱硬化型接著劑、光硬化型接著劑等。該等中，較佳為感壓接著劑。作為感壓接著劑未特別限制，舉例為例如丙烯酸系感壓接著劑、橡膠系感壓接著劑、矽氧系感壓接著劑、胺基甲酸酯系感壓接著劑、聚丙烯醯胺系感壓接著劑等。該等情況下，面板單元具有發光模組、上述光學薄膜及設置於該等之間的接著層。When the panel unit includes a light emitting module and the above-mentioned optical film, preferably the light emitting module and the optical film are bonded by an adhesive. When bonding a laminated film, it is preferable to provide the base material layer (preferably, the translucent layer B) on the display surface side of the translucent layer A described above. Moreover, it is preferable that the light-emitting module is bonded to the uppermost surface of the above-mentioned laminated film on the side of the above-mentioned light-transmitting layer A than the above-mentioned base material layer (preferably the light-transmitting layer B) with an adhesive. At this time, the light-transmitting layer A constitutes one of the outermost surfaces of the optical film, and the surface of the optical film on the side of the light-transmitting layer A is preferably bonded in such a way that the light-emitting modules face each other. The adhesive is not particularly limited, and conventional adhesives can be used, such as pressure-sensitive adhesives, thermosetting adhesives, light-curing adhesives, and the like. Among them, a pressure-sensitive adhesive is preferable. The pressure-sensitive adhesive is not particularly limited, and examples thereof include acrylic pressure-sensitive adhesives, rubber-based pressure-sensitive adhesives, silicone-based pressure-sensitive adhesives, urethane-based pressure-sensitive adhesives, polyacrylamide-based Pressure-sensitive adhesives, etc. In these cases, the panel unit has a light emitting module, the above-mentioned optical film, and an adhesive layer provided therebetween.
又，面板單元包含發光模組與上述光學薄膜時，發光模組、上述光學薄膜與根據需要採用之其他構件可藉由熱壓加工而一體化予以貼合。貼合積層薄膜時，於上述比透光性層A更靠表面側配置上述基材層(較佳為透光性層B)，並將發光模組與上述積層薄膜之較上述基材層(較佳為透光性層B)更於上述透光性層A側之最表面予以貼合。此時，透光性層A構成光學薄膜之一最表面，光學薄膜之透光性層A側的面較佳以與發光模組彼此面向之方式貼合。藉由熱壓加工而一體化予以貼合時，可於任意構件間應用上述接著劑。Moreover, when the panel unit includes a light emitting module and the above-mentioned optical film, the light-emitting module, the above-mentioned optical film, and other members used as needed can be bonded integrally by hot pressing. When pasting the laminated film, the above-mentioned substrate layer (preferably the transparent layer B) is arranged on the surface side of the above-mentioned transparent layer A, and the ratio between the light-emitting module and the above-mentioned laminated film is compared with the above-mentioned substrate layer ( Preferably, the translucent layer B) is bonded to the outermost surface on the translucent layer A side. At this time, the light-transmitting layer A constitutes one of the outermost surfaces of the optical film, and the surface of the optical film on the side of the light-transmitting layer A is preferably bonded so as to face the light-emitting module. In the case of integral bonding by heat press processing, the above-mentioned adhesive can be applied between arbitrary members.
以下顯示發光模組之一種的LED模組構成一例，但本發明中可使用之LED模組不限於該構成。An example of the LED module structure which is one type of light emitting module is shown below, but the LED module which can be used in this invention is not limited to this structure.
LED模組係於支撐基板上形成有配線部而成之配線基板上，安裝1或複數個LED元件而構成。此處，LED模組較佳為安裝複數個LED元件而構成。The LED module is formed by mounting one or a plurality of LED elements on a wiring substrate formed by forming a wiring portion on a supporting substrate. Here, the LED module is preferably configured by mounting a plurality of LED elements.
配線基板係於支撐基板的表面，以可與LED元件導通之形態，例如形成有銅等之金屬或其他導電性構件形成之配線部的電路基板。支撐基板之材料未特別限制，舉例為例如作為電子電路基板使用之以往習知之材料，例如玻璃環氧樹脂等。The wiring board is a circuit board in which a wiring portion formed of metal such as copper or other conductive members is formed on the surface of the supporting substrate in a form that can be electrically connected to the LED element. The material of the supporting substrate is not particularly limited, and examples thereof include conventionally known materials used as electronic circuit substrates, such as glass epoxy resin, and the like.
LED模組中，LED元件係以經由焊料層以可導電態樣安裝於配線部之上。In the LED module, the LED element is mounted on the wiring part in a conductive state through a solder layer.
LED元件係藉由另外接合之IC晶片基板等之發光控制手段分別個別控制其發光。The light emission of LED elements is individually controlled by light emission control means such as IC chip substrates bonded separately.
LED模組之大小未特別限制，一般基於成本性能之觀點，較佳為對角線長度為10吋~200吋左右者，更佳為50吋~200吋左右者。The size of the LED module is not particularly limited. Generally, based on the viewpoint of cost performance, the diagonal length is preferably about 10 inches to 200 inches, and more preferably about 50 inches to 200 inches.
安裝於配線基板之LED元件未特別限制，但較佳為利用P型半導體與N型半導體接合成之PN接合部之發光的發光元件。作為此等發光元件之構造未特別限制，但舉例為例如P型電極、N型電極設於元件上面、下面之構造，或於元件單面設置P型、N型電極兩者的構造。特別可較佳地使用日本特開2006-339551公報中作為「晶片狀電子零件」而揭示之LED元件般之微小尺寸之LED元件。該文獻中揭示之LED元件的寬度×深度×高度的尺寸約為25μm×15μm×2.5μm。The LED element mounted on the wiring board is not particularly limited, but is preferably a light-emitting element that emits light from a PN junction formed by joining a P-type semiconductor and an N-type semiconductor. The structure of these light-emitting elements is not particularly limited, but examples include a structure in which P-type electrodes and N-type electrodes are provided on the top and bottom of the element, or a structure in which both P-type and N-type electrodes are provided on one surface of the element. In particular, a micro-sized LED element such as an LED element disclosed in JP 2006-339551 A as a "chip-shaped electronic component" can be preferably used. The dimensions of the LED element disclosed in this document are about 25 μm×15 μm×2.5 μm in width×depth×height.
LED元件較佳包含LED發光晶片及被覆其之蓋。作為樹脂蓋的材料未特別限制，舉例為例如環氧樹脂、矽氧樹脂、聚醯亞胺樹脂等之有機絕緣材料。該等中，基於保護LED發光晶片免受物理衝擊，並且抑制起因於構成LED發光晶片之半導體與空氣的折射率差而朝半導體內之光的全反射、提高LED元件之發光效率之觀點，較佳為環氧樹脂。The LED element preferably includes an LED light-emitting chip and a cover covering it. The material of the resin cover is not particularly limited, and examples include organic insulating materials such as epoxy resin, silicone resin, and polyimide resin. Among these, based on the viewpoint of protecting the LED light-emitting chip from physical impact, and suppressing the total reflection of light into the semiconductor caused by the difference in refractive index between the semiconductor and the air constituting the LED light-emitting chip, and improving the luminous efficiency of the LED element, it is relatively Preferably it is epoxy resin.
LED元件更佳為「微小尺寸之LED元件」。本說明書中，所謂「微小尺寸之LED元件」，具體而言，表示關於包含LED發光晶片及被覆其之樹脂蓋的發光元件全體的尺寸，寬度(W)及深度(D)均為300μm以下，高度(H)為200μm以下之LED元件。且，「微小尺寸之LED元件」更佳係寬度及深度均為50μm以下，高度為10μm以下。又，LED元件之配置間隔較佳為0.03mm以上100mm以下，更佳為0.05mm以上5mm以下。而且，發光元件為LED元件的發光模組(LED模組)特佳係寬度及深度均為50μm以下，高度為10μm以下之微小尺寸的LED元件，以間距為數μm~數十μm左右之間隔以矩陣狀排列數千×數千左右以上的個數。又本說明書中，具有包含以上述「微小尺寸的LED元件」以0.03mm以上100mm以下之配置間隔配置為矩陣狀之LED模組之面板單元構成之顯示面的顯示裝置稱為「微LED顯示裝置」。The LED element is more preferably a "micro-sized LED element". In this specification, the term "micro-sized LED element" specifically refers to the size of the entire light-emitting element including the LED light-emitting chip and the resin cover covering it, and the width (W) and depth (D) are both 300 μm or less. LED elements with a height (H) of 200 μm or less. Furthermore, the "micro-sized LED element" more preferably has a width and a depth of 50 μm or less, and a height of 10 μm or less. Also, the arrangement interval of the LED elements is preferably from 0.03 mm to 100 mm, more preferably from 0.05 mm to 5 mm. Moreover, the light-emitting module (LED module) in which the light-emitting element is an LED element is particularly suitable for micro-sized LED elements with a width and depth of less than 50 μm and a height of less than 10 μm. Numbers of several thousand by several thousand or more are arranged in a matrix. Also in this specification, a display device having a display surface composed of a panel unit including LED modules arranged in a matrix at an arrangement interval of 0.03 mm to 100 mm above "micro-sized LED elements" is referred to as a "micro LED display device." ".
圖3係顯示本發明一實施形態之面板單元之剖面構造之示意圖。圖3之上方為顯示面側(即顯示裝置之視認側)。面板單元10具有具LED模組11與硬塗層4之積層薄膜2。積層薄膜2較發光模組11更配置於顯示面側，且於較透光性層A 1更於顯示面側配置透光性層B 3。此時，LED模組11與積層薄膜2之透光性層A 1側之面經由接著層12貼合。又，圖3中，3'表示成為透光性層B 3之母體(基礎)的層或薄膜。Fig. 3 is a schematic diagram showing a cross-sectional structure of a panel unit according to an embodiment of the present invention. The upper part of FIG. 3 is the display side (ie, the viewing side of the display device). The
所謂顯示裝置表示文字・圖像・動畫等之視覺資訊的顯示裝置。應用上述光學薄膜之顯示裝置未特別限制，可使用習知裝置，例如，液晶顯示裝置般之非發光型裝置、或LED顯示裝置、有機EL顯示裝置等之自發光型裝置等。該等中，較佳為自發光型裝置，更佳為LED顯示裝置，較佳為如上述所稱之微LED顯示裝置。The so-called display device is a display device that displays visual information such as text, images, animations, etc. The display device to which the above-mentioned optical film is applied is not particularly limited, and known devices can be used, for example, non-luminous devices such as liquid crystal display devices, or self-luminous devices such as LED display devices and organic EL display devices. Among them, self-luminous devices are preferred, LED display devices are more preferred, and micro LED display devices as mentioned above are preferred.
具有發光模組之各個面板單元較佳使用於具有由複數面板單元構成之顯示面的顯示裝置。亦即，本發明之另一態樣可說是有關具有由包含上述光學薄膜之複數面板單元構成之顯示面的顯示裝置。Each panel unit having a light emitting module is preferably used in a display device having a display surface composed of a plurality of panel units. That is, another aspect of the present invention can be said to relate to a display device having a display surface composed of a plurality of panel units including the above optical film.
又，本說明書中，具有由複數面板單元構成之顯示面的顯示裝置亦稱為獨立模組型顯示裝置。獨立模組型顯示裝置中，複數面板單元可鋪設為曲面狀，亦可鋪設為瓷磚狀(矩陣狀、平面狀)。該等中，較佳鋪設為瓷磚狀。且，複數面板單元可係各個顯示面構成獨立視覺資訊，且亦可各個顯示面以全體構成一個視覺資訊。該等中，較佳各個顯示面以全體構成一個視覺資訊。In addition, in this specification, a display device having a display surface composed of a plurality of panel units is also referred to as an independent module type display device. In the independent modular display device, the plurality of panel units can be laid in a curved shape or in a tile shape (matrix shape, planar shape). Among these, it is preferable to pave in a tile form. Moreover, the plurality of panel units can form independent visual information for each display surface, and can also form one visual information for each display surface as a whole. Among them, it is preferable that each display surface constitutes one visual information as a whole.
圖4係顯示本發明一實施形態之獨立模組型顯示裝置之俯視構造之示意圖。獨立模組型顯示裝置20之顯示面具有複數面板單元10鋪設為瓷磚狀(平面狀)而構成之顯示面。又，具有由複數面板單元構成之顯示面的顯示裝置較佳可分解為具有由該等所含之一個或複數面板單元構成之顯示面的顯示裝置。Fig. 4 is a schematic diagram showing a top view structure of an independent modular display device according to an embodiment of the present invention. The display surface of the independent
又，作為發光模組及顯示裝置亦可使用例如日本特開2019-204905號公報中記載之習知模組及裝置。 [實施例] In addition, conventional modules and devices described in Japanese Patent Application Laid-Open No. 2019-204905, for example, can also be used as the light emitting module and display device. [Example]
本發明之效果將使用以下實施例及比較例加以說明。但，本發明之技術範圍並不僅限於以下實施例。The effects of the present invention will be described using the following examples and comparative examples. However, the technical scope of the present invention is not limited to the following examples.
＜薄膜之製造＞ [薄膜1(積層薄膜)] (粒子分散液之調製) 10質量份之氧化矽粒子(日本AEROSIL股份有限公司製R972V)與90質量份之乙醇以溶解機攪拌混合30分鐘後，使用高壓分散機的Munton Gorlin均質機予以分散，調製分散液。於所得分散液中，邊攪拌邊投入65質量份之二氯甲烷，以溶解機攪拌和混合30分鐘並稀釋。所得溶液以先進科技東洋股份有限公司製聚丙烯捲繞匣過濾器TCW-PPS-1N過濾，獲得粒子分散液。 ＜Manufacture of film＞ [Film 1 (laminated film)] (Preparation of particle dispersion) 10 parts by mass of silicon oxide particles (manufactured by Japan Aerosil Co., Ltd. R972V) and 90 parts by mass of ethanol were stirred and mixed with a dissolver for 30 minutes, and then dispersed using a Munton Gorlin homogenizer of a high-pressure disperser to prepare a dispersion. 65 parts by mass of dichloromethane was poured into the obtained dispersion liquid while stirring, stirred and mixed with a dissolver for 30 minutes, and diluted. The resulting solution was filtered with a polypropylene wound cartridge filter TCW-PPS-1N manufactured by Advanced Technology Toyo Co., Ltd. to obtain a particle dispersion.
(顏料分散液之調製) 10質量份之碳黑(CB)(三菱化學股份有限公司製#950)與90質量份之甲基乙基酮(MEK)以溶解機攪拌混合30分鐘後，使用超音波分散機分散30分鐘，調製分散液。所得分散液以先進科技東洋股份有限公司製聚丙烯捲纏匣過濾器TCW-PPS-1N過濾，獲得顏料分散液。 (Preparation of Pigment Dispersion Liquid) 10 parts by mass of carbon black (CB) (#950 manufactured by Mitsubishi Chemical Co., Ltd.) and 90 parts by mass of methyl ethyl ketone (MEK) were stirred and mixed with a dissolver for 30 minutes, and dispersed for 30 minutes using an ultrasonic disperser. Prepare the dispersion. The resulting dispersion was filtered with a polypropylene wrap cartridge filter TCW-PPS-1N manufactured by Advanced Technology Toyo Co., Ltd. to obtain a pigment dispersion.
(透光性層A形成用塗佈液之調製) 首先，於加壓溶解槽中加入二氯甲烷。其次，邊攪拌邊投入環烯烴樹脂(COP，重量平均分子量14萬，具有極性基(羧基)之環烯烴樹脂，JSR股份有限公司製ARTON(註冊商標)G7810)。接著，投入上述調製之粒子分散液及顏料分散液，將其加熱至60℃攪拌30分鐘，使環烯烴樹脂完全溶解，獲得透光性層A形成用塗佈液。 (Preparation of Coating Liquid for Forming Translucent Layer A) First, add dichloromethane into a pressurized dissolution tank. Next, a cycloolefin resin (COP, a cycloolefin resin having a weight average molecular weight of 140,000 and a polar group (carboxyl group), ARTON (registered trademark) G7810 manufactured by JSR Co., Ltd.) was charged while stirring. Next, the above-prepared particle dispersion and pigment dispersion were poured in, heated to 60° C. and stirred for 30 minutes to completely dissolve the cycloolefin resin to obtain a coating liquid for forming a translucent layer A.
《透光性層A形成用塗佈液之組成》
環烯烴樹脂 100質量份
二氯甲烷 890質量份
粒子分散液 5質量份
顏料分散液 6質量份
"Composition of Coating Liquid for Forming Translucent Layer A"
(包含透光性層A及透光性層B之積層薄膜之製作)
作為透光性層B，準備Zeonor(註冊商標)ZF16(日本Zeon股份有限公司製厚度100μm)。於該透光性層B上，藉由背塗法使用模嘴塗覆上述所得之透光性層A形成用塗佈液。隨後以乾燥速度0.002kg/hr・m
2，以自透光性層B側吹來的熱風與自透光性層A形成用塗佈液之塗膜側吹來的熱風的溫度為130℃之條件下乾燥，形成厚度10μm之透光性層A，獲得積層薄膜之薄膜1。又，透光性層A中之氧化矽粒子之平均二次粒徑為200nm，顏料之平均二次粒徑為300nm。
(Preparation of Laminated Film Containing Translucent Layer A and Translucent Layer B) As the translucent layer B, Zeonor (registered trademark) ZF16 (manufactured by Zeon Co., Ltd.,
[薄膜2(積層薄膜)]
於薄膜1之製造中，除了將透光性層B變更為聚對苯二甲酸乙二酯薄膜(PET薄膜)(東洋紡股份有限公司製COSMO SHINE(註冊商標)A4300，厚度50μm)以外，同樣地獲得積層薄膜的薄膜2。
[Film 2 (laminated film)]
In the production of the
[薄膜3(積層薄膜)]
於薄膜1之製造中，除了將透光性層A之碳黑添加量以相對於環烯烴樹脂100質量份成為0.55質量份之方式變更顏料分散液之添加量以外，同樣地獲得積層薄膜的薄膜3。
[Film 3 (laminated film)]
In the production of
[薄膜4(積層薄膜)]
於薄膜1之製造中，除了將透光性層A之碳黑添加量以相對於環烯烴樹脂100質量份成為0.55質量份之方式變更顏料分散液之添加量，將透光性層B變更為聚對苯二甲酸乙二酯薄膜(PET薄膜)(東洋紡股份有限公司製COSMO SHINE(註冊商標) A4300，厚度50μm)以外，同樣地獲得積層薄膜的薄膜4。
[Film 4 (laminated film)]
In the manufacture of the
[薄膜5(積層薄膜)]
於薄膜1之製造中，除了將透光性層A之碳黑添加量以相對於環烯烴樹脂100質量份成為0.50質量份之方式變更顏料分散液之添加量，將透光性層B變更為聚對苯二甲酸乙二酯薄膜(PET薄膜)(東洋紡股份有限公司製COSMO SHINE(註冊商標) A4300，厚度50μm)以外，同樣地獲得積層薄膜的薄膜5。
[Film 5 (laminated film)]
In the manufacture of the
[薄膜6(積層薄膜)]
於薄膜1之製造中，除了將透光性層A之碳黑添加量以相對於環烯烴樹脂100質量份成為0.50質量份之方式變更顏料分散液之添加量以外，同樣地獲得積層薄膜的薄膜6。
[Film 6 (laminated film)]
In the production of
[薄膜7(單層薄膜)]
於薄膜1之製造中，除了將透光性層A之碳黑添加量以相對於環烯烴樹脂100質量份成為0.55質量份之方式變更顏料分散液之添加量以外，同樣地獲得包含透光性層A及透光性層B之積層薄膜。其次自所得積層薄膜剝離透光性層B成為僅透光性層A，獲得單層薄膜的薄膜7。
[Film 7 (single layer film)]
In the manufacture of the
[薄膜8(積層薄膜)]
於薄膜1之製造中，除了透光性層A之製造時未添加粒子分散液，將透光性層A之碳黑添加量以相對於環烯烴樹脂100質量份成為0.55質量份之方式變更顏料分散液之添加量，將透光性層B變更為聚對苯二甲酸乙二酯薄膜(PET薄膜)(東洋紡股份有限公司製COSMO SHINE(註冊商標)A4300，厚度50μm)以外，同樣地獲得積層薄膜的薄膜8。
[Film 8 (laminated film)]
In the production of the
[薄膜9(單層薄膜)]
於薄膜1之製造中，除了透光性層A之製造時未添加粒子分散液，將透光性層A之碳黑添加量以相對於環烯烴樹脂100質量份成為0.55質量份之方式變更顏料分散液之添加量以外，同樣地獲得包含透光性層A及透光性層B之積層薄膜。其次自所得積層薄膜剝離透光性層B成為僅透光性層A，獲得單層薄膜的薄膜9。
[Film 9 (single layer film)]
In the production of the
[薄膜10(積層薄膜)]
於薄膜1之製造中，除了將透光性層A之碳黑添加量以相對於環烯烴樹脂100質量份成為0.65質量份之方式變更顏料分散液之添加量以外，同樣地獲得積層薄膜的薄膜10。
[Film 10 (laminated film)]
In the production of
[薄膜11(積層薄膜)]
於薄膜1之製造中，除了於透光性層A之製造時未添加顏料分散液以外，同樣地獲得積層薄膜的薄膜11。
[Film 11 (laminated film)]
In the production of the
又，上述薄膜2~11中，透光性層A的厚度全部為10μm。又上述薄膜2~11中，除了不含氧化矽粒子之上述薄膜8及9以外，透光性層A中之氧化矽粒子的平均二次粒徑全部為200nm。而且上述薄膜2~11中，除了不含顏料之上述薄膜11以外，顏料之平均二次粒徑均為300nm。In addition, in the above-mentioned
各薄膜之特徵示於下述表1。The characteristics of each film are shown in Table 1 below.
＜薄膜之評價＞
[透光性層A及透光性層B之全光線透過率]
針對積層薄膜的薄膜1~6、8、10及11，剝離透光性層B，成僅為透光性層A之狀態，將單層薄膜之薄膜7及9直接以該狀態(即僅透光性層A之狀態)，評價全光線透過率(%)。該等結果示於下述表1。
＜Evaluation of film＞
[Total light transmittance of translucent layer A and translucent layer B]
For the
此外，針對作為透光性層B使用之日本Zeon股份有限公司製之Zeonor(註冊商標)ZF16及東洋紡股份有限公司製之COSMO SHINE(註冊商標)A4300，以同樣方法測定全光線透過率後，分別為91.90%及90.41%。In addition, for Zeonor (registered trademark) ZF16 manufactured by Zeon Co., Ltd. Japan and COSMO SHINE (registered trademark) A4300 manufactured by Toyobo Co., Ltd. used as the light-transmitting layer B, the total light transmittance was measured in the same way, and respectively 91.90% and 90.41%.
又，全光線透過率係使用霧度計(NDH4000，日本電色工業股份有限公司製)，依據JIS K 7361-1：1997(塑膠-透明材料之全光線透過率的試驗方法)測定。In addition, the total light transmittance was measured using a haze meter (NDH4000, manufactured by Nippon Denshoku Industries Co., Ltd.) in accordance with JIS K 7361-1:1997 (Test method for total light transmittance of plastic-transparent materials).
[積層薄膜之霧度]
針對積層薄膜的薄膜1~6、8、10及11，評價自透光性層A側測定之霧度值Hz(A-B)(%)與自透光性層B側測定之霧度值Hz(B-A)(%)。霧度值係使用霧度計(NDH4000，由日本電色工業股份有限公司製)，依據JIS K 7136：2000測定。關於Hz(A-B)(%)與Hz(B-A)(%)哪一者為較大值示於下述表1。
[Haze of laminated film]
For
＜顯示裝置之評價＞ [面板單元及顯示裝置之製造] 將具有長40cm、寬40cm大小的外形之包含長寬2mm間距之LED元件的LED模組之LED元件之包含樹脂蓋的表面上，貼合由感壓接著劑構成之接著層。其次，於LED模組之LED元件的上述表面上，經由該接著層貼合上述所得薄膜，獲得面板單元。此處，薄膜為積薄層膜時，以積層薄膜之透光性層A側與LED元件之上述表面相互對向配置之方式予以貼合。接著，將所得面板單元以橫向排列連結2個而獲得獨立模組型顯示裝置。 ＜Evaluation of Display Device＞ [Manufacture of panel units and display devices] An adhesive layer made of a pressure-sensitive adhesive was pasted on the surface of the LED element of the LED module with a length of 40 cm and a width of 40 cm, including LED elements with a pitch of 2 mm. Next, on the above-mentioned surface of the LED element of the LED module, the above-mentioned obtained film is bonded via the adhesive layer to obtain a panel unit. Here, when the thin film is a laminated film, it is bonded so that the light-transmitting layer A side of the laminated film and the above-mentioned surface of the LED element are opposed to each other. Next, two of the obtained panel units were connected in a horizontal arrangement to obtain an independent module type display device.
[顯示裝置之亮度及無縫性] 針對上述所得獨立模組型顯示裝置，使用Cybaernet系統股份有限公司製ProMetric Color 1600，測定亮度(cd/m 2)，進行面板單元之亮度平均值及亮度均勻度之評價。此處，亮度均勻度係面板間的無縫性越高，其值越小。藉此，亮度均勻度成為在具有由複數面板單元構成之顯示面的顯示裝置中源自各面板單元間之接縫之影像品質降低之抑制效果的指標。亮度平均值及亮度均勻度可分別使用以下式計算。下述式中，平均均勻度以Lu表示，且平均亮度以La表示。 [Brightness and seamlessness of display device] For the independent module type display device obtained above, the luminance (cd/m 2 ) was measured using ProMetric Color 1600 manufactured by Cybaernet Systems Co., Ltd., and the average luminance and luminance uniformity of the panel unit were performed degree of evaluation. Here, the brightness uniformity means that the higher the seamlessness between panels, the smaller the value. Thereby, the luminance uniformity becomes an index of the suppression effect of the image quality degradation originating in the joint between each panel unit in the display apparatus which has the display surface which consists of several panel units. The brightness average value and the brightness uniformity can be calculated using the following equations, respectively. In the following formulae, the average uniformity is represented by Lu, and the average luminance is represented by La.
又，除了使用未貼合上述所得薄膜之面板單元以外，與上述同樣地製造獨立模組型顯示器之亮度平均值為3000cd/m 2。 Also, the average value of luminance of a stand-alone module display produced in the same manner as above was 3000 cd/m 2 except for using a panel unit that was not bonded with the film obtained above.
[數1] 亮度平均值La=(L1+L2)/2 亮度均勻度Lu=(∣L1-L2∣/La)×100 [number 1] Average brightness La=(L1+L2)/2 Brightness uniformity Lu=(∣L1-L2∣/La)×100
L1：針對各個面板單元內中心與距中心上下10cm的位置之點的3點的亮度的平均值之2個面板單元之平均值 L2：鄰接之2個面板單元間的中心與距中心上下10cm位置之點的3點的亮度的平均值。 L1: The average value of 2 panel units for the average value of the luminance of 3 points at the center and 10cm above and below the center in each panel unit L2: The average value of the luminance of 3 points at the center between two adjacent panel units and the points 10cm above and below the center.
又，針對亮度，評價A~C判斷為顯示良好結果。該等結果示於下述表1。Moreover, about brightness, it judged that evaluation A - C showed a favorable result. These results are shown in Table 1 below.
(亮度之評價基準) A：亮度平均值為1000(cd/m 2)以上 B：亮度平均值為500(cd/m 2)以上未達1000(cd/m 2) C：亮度平均值為200(cd/m 2)以上未達500(cd/m 2) D：亮度平均值未達200(cd/m 2) (Evaluation criteria for brightness) A: The average brightness is 1000 (cd/m 2 ) or more B: The average brightness is 500 (cd/m 2 ) or more but less than 1000 (cd/m 2 ) C: The average brightness is 200 (cd/m 2 ) less than 500 (cd/m 2 ) D: average brightness less than 200 (cd/m 2 )
又針對無縫性，評價A~C判斷為顯示良好結果。該等結果示於下述表1。Regarding seamlessness, evaluations A to C were judged to show good results. These results are shown in Table 1 below.
(無縫性之評價基準) A：亮度均勻度為6以下。 B：亮度均勻度超過6且12以下。 C：亮度均勻度超過12且18以下。 D：亮度均勻度超過18。 (Evaluation criteria for seamlessness) A: The luminance uniformity is 6 or less. B: The luminance uniformity is more than 6 and 12 or less. C: Brightness uniformity is more than 12 and 18 or less. D: The luminance uniformity exceeds 18.
由上述表1，確認使用本發明之薄膜1~7的顯示裝置之無縫性及亮度兩者均優異。另一方面，確認比較例之透光性層A不含粒子之薄膜8及9之無縫性差。且，使用透光性層A之全光線透過率超出本發明範圍之薄膜10及11的顯示裝置，確認無縫性及亮度之一者不足。From the above Table 1, it was confirmed that the display devices using the
且，基於薄膜1、3及6之比較，以及薄膜2、4及5之比較，確認全光線透過率在15-25%的範圍內時，無縫性及亮度的平衡更良好。Moreover, based on the comparison of
而且，基於薄膜3、4及7之比較，確認藉由積層薄膜滿足Hz(A-B)＜Hz(B-A)的關係，無縫性更提高。且，基於薄膜1及2之比較，以及薄膜6及5之比較，確認藉由積層薄膜滿足Hz(A-B)＜Hz(B-A)的關係，無縫性更提高。Furthermore, based on the comparison of
本申請案係基於2020年7月7日提出申請之日本專利申請號2020-117339，其揭示內容藉由參考全文併入本文中。This application is based on Japanese Patent Application No. 2020-117339 filed on July 7, 2020, the disclosure of which is incorporated herein by reference in its entirety.
1透光性層A 2:積層薄膜 3:透光性層B 3’:成為透光性層B之母體(基礎)之層或薄膜 4:硬塗層 10:面板單元 11:LED模組 12:接著層 20:獨立模組型之顯示裝置 100:積層體(積層薄膜) 110:支撐體(例如透光性層B等之基材層) 200:製造裝置 201:支撐體(例如透光性層B等之基材層) 210:供給部 220:塗佈部 221:背襯輥 222:塗佈頭 223:減壓室 230:乾燥部 231:乾燥室 232:乾燥用氣體之導入口 233:排出口 240:冷卻部 241:冷卻室 242:冷卻風入口 243:冷卻風出口 250:捲取部 251:積層體(積層薄膜)之捲筒體 a,b,c,d:輸送輥 1 Translucent layer A 2:Laminated film 3: Translucent layer B 3': The layer or film that becomes the matrix (base) of the translucent layer B 4: Hard coating 10: Panel unit 11: LED module 12: Then layer 20: Independent modular display device 100: laminated body (laminated film) 110: support body (such as the substrate layer of the light-transmitting layer B, etc.) 200: Manufacturing device 201: support body (such as the substrate layer of the light-transmitting layer B, etc.) 210: Supply Department 220: Coating Department 221: backing roller 222: coating head 223: decompression chamber 230: drying section 231: drying room 232: Inlet for drying gas 233: outlet 240: cooling department 241: cooling room 242: Cooling air inlet 243: cooling air outlet 250: coiling department 251: roll body of laminated body (laminated film) a,b,c,d: conveyor roller
[圖1(A)~(C)]分別為表示本發明一實施形態所用之光學薄膜的剖面構造之示意圖。分別係1表示後述之透光性層A，2表示積層薄膜，3表示後述之透光性層B，3'表示透光性層B之母體(基礎)的層或薄膜，4表示硬塗層。
[圖2]係表示本發明一實施形態之光學薄膜的製造裝置之一例的示意圖。分別係100表示積層體(積層薄膜)，110表示支撐體(例如透光性層B等之基材層)，200表示製造裝置，201表示支撐體(例如透光性層B等之基材層)的捲筒體，210表示供給部，220表示塗佈部，221表示背襯輥，222表示塗佈頭，223表示減壓室，230表示乾燥部，231表示乾燥室，232表示乾燥用氣體之導入口，233表示排出口，240表示冷卻部，241表示冷卻室，242表示冷卻風入口，243表示冷卻風出口，250表示捲取部，251表示積層板(積層薄膜)之捲筒體，a、b、c、d表示輸送輥。
[圖3]係顯示本發明一實施形態之面板單元之剖面構造之示意圖。分別係1表示後述之透光性層A，2表示積層薄膜，3表示後述之透光性層B，3'表示透光性層B之母體(基礎)的層或薄膜，4表示硬塗層，10表示面板單元，11表示LED模組，12表示接著層。
[圖4]係顯示本發明一實施形態之獨立模組型之顯示裝置的俯視構造之示意圖。分別係10表示面板單元，20表示獨立模組型之顯示裝置。
[FIG. 1(A)-(C)] are schematic diagrams each showing a cross-sectional structure of an optical film used in one embodiment of the present invention. 1 represents the translucent layer A described later, 2 represents the laminated film, 3 represents the translucent layer B described below, 3' represents the matrix (base) layer or film of the translucent layer B, and 4 represents the hard coat layer .
[ Fig. 2] Fig. 2 is a schematic view showing an example of an optical film manufacturing apparatus according to an embodiment of the present invention. 100 denotes a laminate (laminated film), 110 denotes a support (for example, a substrate layer such as a translucent layer B), 200 denotes a manufacturing device, and 201 denotes a support (such as a substrate layer such as a translucent layer B, etc.) ), 210 represents the supply part, 220 represents the coating part, 221 represents the backing roll, 222 represents the coating head, 223 represents the decompression chamber, 230 represents the drying part, 231 represents the drying chamber, and 232 represents the drying
1:透光性層A 1: Translucent layer A
2:積層薄膜 2:Laminated film
3:透光性層B 3: Translucent layer B
3’:成為透光性層B之母體(基礎)之層或薄膜 3': The layer or film that becomes the matrix (base) of the translucent layer B
4:硬塗層 4: Hard coating
10:面板單元 10: Panel unit
11:LED模組 11: LED module
12:接著層 12: Then layer
Claims (13)
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| TW201840822A (en) * | 2014-02-18 | 2018-11-16 | 南韓商Ｌｇ化學股份有限公司 | Encapsulation film and organic electronic device comprising the same |
| US20200161514A1 (en) * | 2018-11-16 | 2020-05-21 | Samsung Electronics Co., Ltd. | Display module, display apparatus, and manufacturing method of display apparatus |
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| JP5846345B1 (en) | 2014-04-21 | 2016-01-20 | コニカミノルタ株式会社 | Planar light emitting unit |
| JP2019028370A (en) | 2017-08-02 | 2019-02-21 | 大日本印刷株式会社 | Front plate for display device and display device |
| JP2019066613A (en) | 2017-09-29 | 2019-04-25 | 大日本印刷株式会社 | Display panel and tiling display unit |
| JP7067269B6 (en) | 2018-05-24 | 2023-12-20 | 大日本印刷株式会社 | Self-luminous display |
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| TW201840822A (en) * | 2014-02-18 | 2018-11-16 | 南韓商Ｌｇ化學股份有限公司 | Encapsulation film and organic electronic device comprising the same |
| US20200161514A1 (en) * | 2018-11-16 | 2020-05-21 | Samsung Electronics Co., Ltd. | Display module, display apparatus, and manufacturing method of display apparatus |
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