Method for manufacturing self-emissive displays and resin films for self-emissive displays

Abstract

A self-emissive display includes a self-emissive panel with a reflectance of 40% or less and a resin film disposed on the viewing side of the self-emissive panel. The resin film includes a coloring layer containing a resin material and a colorant, and the average value AvS of the linear transmittance at wavelengths of 480 nm and 610 nm is less than the average value AvL of the linear transmittance at wavelengths of 700 nm and 800 nm.

Description

Technical Field

[0001] This invention relates to a self-emissive display and a method for manufacturing a resin film for a self-emissive display. Prior Technology

[0002] Liquid crystal displays (LCDs) have been developed as non-self-emissive displays that display images by transmitting or blocking light from a light source. As components of an LCD, sometimes in addition to the backlight and the liquid crystal panel that serve as the light source, a resin film is provided to protect the liquid crystal panel (Patent Document 1).

[0003] Furthermore, in recent years, the development of self-emissive displays that achieve image display by emitting light from the display elements themselves has also been underway. In order to improve display performance, an optical stack having a retardation plate and a polarizing element will be installed into an organic electroluminescent display (organic EL display) that is a self-emissive display (Patent Document 2).

[0004] Patent Documents Patent Document 1: International Patent Publication No. 2019 / 022213 (corresponding foreign gazette: European Patent Application Publication No. 3659802). Patent Document 2: Japanese Patent Publication No. 2019-204083 Summary of the Invention

[0005] Self-emissive displays such as organic EL displays typically have electrodes on the pixels to enable them to function. In order to improve light extraction efficiency, one of the paired electrodes is made into a reflective electrode that reflects light.

[0006] In self-emissive displays with reflective elements such as reflective electrodes, external light incident on the display may sometimes be reflected by the reflective elements at a certain reflectivity, and thus be seen as reflected light, reducing the contrast of the self-emissive display. Therefore, it is necessary to reduce the reflectivity of self-emissive displays.

[0007] In recent years, advancements in the development of self-emissive displays have led to the emergence of displays with even lower reflectivity than before, but there is a growing demand for further reductions in reflectivity. On the other hand, price competition in the self-emissive display market has intensified. Therefore, it would be desirable if reducing reflectivity could be easily achieved without modifications to the self-emissive panel itself, thus lowering the cost of self-emissive displays.

[0008] Incidentally, while self-emissive displays are used outdoors, they are also frequently used indoors. Therefore, there is a need for self-emissive displays with reflectivity reduced to a level suitable for indoor use.

[0009] Therefore, there is a need for a self-emissive display with reflectivity reduced to a level suitable for indoor use, and a method for manufacturing a resin film for a self-emissive display that reduces the reflectivity of the self-emissive display to a level suitable for indoor use.

[0010] The inventors, through dedicated research to solve the aforementioned problems, discovered that a self-emissive display comprising a specified self-emissive panel and a resin film comprising a coloring layer and an average linear transmittance satisfying specified conditions can solve the aforementioned problems, thus completing the present invention.

[0011] That is, the present invention provides the following content.

[0012] [1] A self-emissive display comprising a self-emissive panel with a reflectivity of 40% or less and a resin film disposed on the viewing side of the self-emissive panel. The aforementioned resin film includes a colored layer containing resin material and a colorant, and the average value of linear transmittance AvS at wavelengths above 480 nm and below 610 nm is less than the average value of linear transmittance AvL at wavelengths above 700 nm and below 800 nm.

[0013] [2] As described in [1], the self-emissive display film further comprises a first resin layer and a second resin layer, and the coloring layer is disposed between the first resin layer and the second resin layer.

[0014] [3] The self-emissive display described in [1] or [2], wherein the aforementioned resin film has an in-plane phase difference of more than 100 nm and less than 160 nm.

[0015] [4] The self-emissive display described in any of [1] to [3], wherein the aforementioned resin material comprises one or more of the group consisting of cyclic olefin polymers and their hydrides.

[0016] [5] The self-emissive display described in any of [1] to [4], wherein the aforementioned coloring layer contains 0.001% by weight or more and 1% by weight or less of the aforementioned colorant.

[0017] [6] The self-emissive display described in any of [1] to [5], wherein the aforementioned resin film has a linear transmittance of 35% or more and 75% or less at a wavelength of 550 nm.

[0018] [7] A method for manufacturing a resin film for a self-emissive display, comprising: Step (1): The raw materials containing resin material and colorant are mixed to obtain a colored resin material. Step (2): Extruding the aforementioned colored resin material to form an extruded film. The average transmittance TrS of the aforementioned colorant at wavelengths above 480 nm and below 610 nm is less than the average transmittance TrL at wavelengths above 700 nm and below 800 nm.

[0019] [8] The method for manufacturing a resin film for a self-emissive display as described in [7] wherein, in the aforementioned step (2), the extrusion of the aforementioned colored resin material is carried out in parallel with other materials to form a multilayer extruded film comprising a layer of the aforementioned colored resin material and a layer of the aforementioned other materials.

[0020] [9] The method for manufacturing a resin film for a self-emissive display as described in [7] or [8] includes a step of stretching the aforementioned extruded film.

[0021] According to the present invention, a self-emissive display with reflectivity reduced to a level suitable for indoor use can be provided, and a method for manufacturing a resin film for a self-emissive display that reduces the reflectivity of the self-emissive display to a level suitable for indoor use can be provided. Simple Explanation of the Diagram

[0022] <Figure 1> Figure 1 is a cross-sectional schematic diagram of a self-emissive display related to one embodiment of the present invention.

[0023] <Figure 2> Figure 2 is a cross-sectional schematic diagram of a self-emissive display related to another embodiment of the present invention. Implementation

[0024] The following embodiments and examples are disclosed to illustrate the present invention in detail. However, the present invention is not limited to the embodiments and examples shown below, and can be implemented in any way without departing from the scope of the claims and their equivalents. The constituent elements of the embodiments shown below can be appropriately combined.

[0025] In diagrams, sometimes the same symbols are used to label the same components and their descriptions are omitted.

[0026] In the following description, the term "agent" may refer to a single type of substance or a substance containing multiple substances.

[0027] In the following description, "long strip" film refers to a film having a length of 5 times or more relative to its width, preferably 10 times or more. Specifically, it refers to a film of a length that can be rolled up for storage or transport. There is no particular upper limit to the length of the film, and it may be defined as, for example, less than 100,000 times its width.

[0028] In the following description, the in-plane phase difference Re of the layer, unless otherwise noted, is the value shown by Re = (nx - ny) × d. Here, nx represents the refractive index in the direction perpendicular to the thickness direction of the layer (in-plane direction) and imparting the maximum refractive index. ny represents the refractive index in the aforementioned in-plane direction of the layer and orthogonal to the direction of nx. d represents the thickness of the layer. The measurement wavelength is 590 nm unless otherwise noted.

[0029] In the following description, the orientation of an element is referred to as "parallel", "perpendicular" and "orthogonal". Unless otherwise noted, errors within the range of ±3°, ±2° or ±1° may also be included without impairing the effect of the invention.

[0030] [1. Self-emissive display]

[0031] One embodiment of the present invention relates to a self-emissive display comprising a self-emissive panel with a reflectivity of 40% or less and a resin film disposed on the viewing side of the self-emissive panel. Here, the resin film comprises a colored layer containing a resin material and a colorant, and the average value AvS of the linear transmittance at wavelengths of 480 nm and 610 nm is less than the average value AvL of the linear transmittance at wavelengths of 700 nm and 800 nm.

[0032] The self-emissive display of this embodiment has the aforementioned structure, thereby reducing the reflectivity of the self-emissive display to a level suitable for indoor use.

[0033] Figure 1 is a cross-sectional schematic diagram illustrating a self-emissive display related to one embodiment of the present invention. The self-emissive display 100 includes a self-emissive panel 110 and a resin film 120.

[0034] The self-emissive panel 110 has an image display surface 110U for displaying images, and a resin film 120 is disposed on the viewing side of the self-emissive panel 110, that is, on the side of the image display surface 110U. In this embodiment, the resin film 120 is disposed on the image display surface 110U of the self-emissive panel 110. In this embodiment, the resin film 120 is also a coloring layer as described later. In this embodiment, the resin film 120 is in direct contact with the self-emissive panel 110, but in another embodiment, other layers such as an adhesive layer (pressure-sensitive adhesive layer) may be disposed between the resin film 120 and the self-emissive panel 110.

[0035] The following describes the self-emissive panel and resin film of the self-emissive display of this embodiment.

[0036] [1.1. Self-illuminating panel]

[0037] A self-emissive panel is a panel that displays images by emitting light from its own display elements, without the need for a backlight. Examples of self-emissive panels include panels with miniature light-emitting diode display elements (miniature LED display elements) and panels with organic electroluminescent display elements (organic EL display elements).

[0038] Self-emissive panels typically have electrodes for emitting light from display elements. External light incident on the self-emissive panel is usually reflected by the electrodes at a specified ratio. The reflectivity of the self-emissive panel related to this embodiment is typically 40% or less, preferably 30% or less, more preferably 20% or less, and typically 0% or more, but may be 5% or more, or may be 10% or more.

[0039] By combining a self-emissive panel with a reflectance below the aforementioned upper limit with a resin film related to the present embodiment described below, the reflectance of the self-emissive display can be reduced to a level suitable for indoor use.

[0040] The reflectivity of a self-emissive panel can be measured using a spectrophotometer, with the measurement light source set to a D65 light source and the measurement optical system set to include specular component inclusion (SCI).

[0041] [1.2. Resin Film]

[0042] The resin film of this embodiment includes a colored layer containing resin material and a colorant. Furthermore, the average linear transmittance (AvS) of the resin film of this embodiment at wavelengths of 480 nm and above and 610 nm and below is less than the average linear transmittance (AvL) at wavelengths of 700 nm and above and 800 nm and below.

[0043] [Resin Material]

[0044] The resin material included in the coloring layer is not particularly limited, but thermoplastic is preferred. The resin material usually contains polymers and, depending on the requirements, any other components.

[0045] Examples of polymers that can be included in resin materials include: cyclic olefin polymers such as norethene polymers and their hydrides; polyolefins such as polyethylene and polypropylene; polyesters such as polyethylene terephthalate, polyethylene naphthalate, and polybutylene terephthalate; polyarylethers such as polyphenylene sulfide; polyvinyl alcohol; polycarbonate; polyarylethers; acrylonitrile polymers such as polymethyl methacrylate; cellulose ester polymers; polyether esters; polyether esters; polyarylether esters; polyvinyl chloride; and rod-shaped liquid crystal polymers.

[0046] The polymer can be used alone or in combination of two or more in any ratio. Furthermore, the polymer can be a homopolymer or a copolymer.

[0047] The proportion of polymer in the resin material is preferably 50% by weight or more, preferably 60% by weight or more, even better 70% by weight or more, even better 80% by weight or more, even better 90% by weight or more, even better 95% by weight or more, and usually less than 100% by weight, but can also be 100% by weight.

[0048] In terms of excellent properties such as transparency, mechanical strength, and resistance to damp heat, resin materials are preferably selected from one or more of the group consisting of cyclic olefin polymers and their hydrides.

[0049] In one embodiment, the proportion of cycloolefin polymers and their hydrogenated compounds in the resin material is preferably 50% by weight or more, more preferably 60% by weight or more, more preferably 70% by weight or more, more preferably 80% by weight or more, more preferably 90% by weight or more, more preferably 95% by weight or more, and is usually 100% by weight or less, or may be 100% by weight.

[0050] Cycloolefin polymers comprise polymers having structural units that are obtained by polymerizing cycloolefin monomers. Examples of cycloolefin polymers include monocyclic and polycyclic cycloolefin polymers.

[0051] In one embodiment, from the viewpoint of optimizing the transparency and formability of the resin material, it is preferable that the resin material comprises one or more of the group consisting of polycyclic cyclic olefin polymers and their hydrides, and even more preferably that it comprises one or more of the group consisting of cyanide polymers and their hydrides.

[0052] In one embodiment, the resin material is preferably a hydride containing a cyclic olefin polymer, and more preferably a hydride containing a norolefin polymer.

[0053] Examples of norethene-based polymers and their hydrides include: ring-opening polymers of monomers having a norethene structure or ring-opening copolymers of monomers having a norethene structure with other monomers; addition polymers of monomers having a norethene structure or addition copolymers of monomers having a norethene structure with other monomers; and hydrides of these. Among these, ring-opening (co)polymer hydrides of monomers having a norethene structure are particularly suitable from the viewpoints of transparency, formability, heat resistance, low moisture absorption, dimensional stability, and lightweight. Here, "(co)polymer" refers to polymers and copolymers.

[0054] Examples of monomers having a norethene structure include: bicyclo[2.2.1]hept-2-ene (common name: norethene), tricyclo[4.3.0.12.5]deca-3,7-diene (common name: bicyclopentadiene), 7,8-benzotricyclo[4.3.0.12.5]deca-3-ene (common name: methyl-bridged tetrahydrobenzene), tetracyclo[4.4.0.12.5.17.10]dodecyl-3-ene (common name: tetracyclododecene), and derivatives of these compounds (e.g., those with substituents on the ring). Substituents include, for example, alkyl, alkylene, and polar groups. These substituents can be the same or different, and multiple substituents can be bonded to the ring. Furthermore, a monomer having a norethene structure can be used alone or in any combination of two or more.

[0055] Examples of polar groups include heteroatoms or groups containing heteroatoms. Examples of heteroatoms include oxygen atoms, nitrogen atoms, sulfur atoms, silicon atoms, and halogen atoms. Specific examples of polar groups include carboxyl groups, carbonyloxycarbonyl groups, epoxy groups, hydroxyl groups, oxygen groups, ester groups, silyl groups, silyl groups, amino groups, nitrile groups, and sulfonic acid groups.

[0056] Other monomers capable of ring-opening copolymerization with monomers having a norethene structure include, for example, monocyclic alkenes such as cyclohexene, cycloheptene, and cyclooctene, and their derivatives; cyclic conjugated dienes such as cyclohexadiene and cycloheptadiene, and their derivatives; etc. Other monomers capable of ring-opening copolymerization with monomers having a norethene structure can be used alone, or in any combination of two or more.

[0057] Ring-opening polymers of monomers having a norethene structure, and ring-opening copolymers of monomers having a norethene structure and other monomers capable of copolymerizing with monomers having a norethene structure, for example, can also be manufactured by polymerizing or copolymerizing the monomers in the presence of well-known ring-opening polymerization catalysts.

[0058] Other monomers capable of addition copolymerization with monomers having a norethene structure include, for example: α-olefins with 2 to 20 carbon atoms, such as ethylene, propylene, and 1-butene, and their derivatives; cycloolefins, such as cyclobutene, cyclopentene, and cyclohexene, and their derivatives; and non-conjugated dienes such as 1,4-hexadiene, 4-methyl-1,4-hexadiene, and 5-methyl-1,4-hexadiene; etc. Among these, α-olefins are preferred, and ethylene is even more preferred. Furthermore, other monomers capable of addition copolymerization with monomers having a norethene structure can be used alone or in any combination of two or more in any ratio.

[0059] Addition polymers of monomers having a norethene structure, and addition copolymers of monomers having a norethene structure and other monomers capable of copolymerizing with monomers having a norethene structure, for example, can also be manufactured by polymerizing or copolymerizing monomers in the presence of well-known addition polymerization catalysts.

[0060] Specific examples of norethene polymers and their hydrides include: "ZEONOR" manufactured by Zeon Corporation of Japan; "ARTON" manufactured by JSR Corporation; and "TOPAS" manufactured by TOPAS ADVANCED POLYMERS.

[0061] Examples of monocyclic cyclic olefin polymers and their hydrides include addition polymers of monocyclic cyclic olefin monomers such as cyclohexene, cycloheptene, and cyclooctene, and their hydrides.

[0062] The weight average molecular weight (Mw) of the polymer contained in the resin material is preferably 10,000 or more, more preferably 15,000 or more, more preferably 20,000 or more, and preferably 200,000 or less, more preferably 100,000 or less, and even more preferably 80,000 or less. Polymers with this weight average molecular weight achieve an excellent balance of mechanical strength, processability, and heat resistance.

[0063] The molecular weight distribution (Mw / Mn) of the polymer contained in the resin material is preferably 1 or higher, preferably 4 or lower, and more preferably 3.5 or lower. When the molecular weight distribution is above or below the lower limit of the aforementioned range, the productivity of the polymer can be improved and manufacturing costs can be reduced. Furthermore, when it is below the upper limit, the amount of low molecular weight components will be reduced, thereby improving the stability of the layer containing the polymer.

[0064] The weight-average molecular weight (Mw) and number-average molecular weight (Mn) of the polymer contained in the resin material can be measured in terms of polyisoprene equivalents by gel permeation chromatography (hereinafter referred to as "GPC") using cyclohexane as the solvent. In cases where the resin does not dissolve in cyclohexane, the values ​​can be measured in terms of polystyrene equivalents by GPC using toluene or tetrahydrofuran as the solvent.

[0065] The glass transition temperature of the polymer contained in the resin material is preferably above 50°C, more preferably above 70°C, and preferably below 200°C and below 180°C.

[0066] Examples of any components that may be included in a resin material besides polymers include: antioxidants, plasticizers, UV absorbers, and lubricants. Colorants are excluded from the list of components that may be included in a resin material.

[0067] As an arbitrary component, it can be used alone or in any ratio of two or more.

[0068] The total proportion of any component other than the polymer in the resin material is preferably less than 5% by weight, more preferably less than 3% by weight, more preferably less than 1% by weight, and usually more than 0% by weight, or even 0% by weight.

[0069] [Coloring agent]

[0070] Examples of colorants include pigments and dyes that have a transmittance of less than 75% in the visible light region (480 nm to 610 nm). As colorants, only one type can be used, or two or more can be combined in any ratio.

[0071] In one embodiment, from the viewpoint of the weather resistance of the resin film, pigments are preferred as colorants.

[0072] In another embodiment, dyes are preferred as colorants. Using dyes as colorants offers the following advantages: Dyes generally exhibit better dispersibility in resin materials than pigments, thus improving the productivity of resin films. Furthermore, in the infrared region above 700 nm, the light transmittance of the resin film is rarely reduced. Therefore, when integrating various light sensors, such as infrared sensors, into a self-emissive display, the detection function of the light sensors is less likely to be compromised. Additionally, dyes possess sufficient weather resistance even when kept indoors without direct sunlight.

[0073] Examples of dyes include: oil-soluble dyes, disperse dyes, direct dyes, reactive dyes, sulfur dyes, vat dyes, acid dyes, metal-containing dyes, metal-containing acid dyes, basic dyes, mordant dyes, acid mordant dyes, cationic dyes, and fluorescent whitening dyes. Among these, from the viewpoint of effectively coloring the dyeing layer containing resin materials, oil-soluble dyes and disperse dyes are particularly preferred.

[0074] The types of compounds contained in dyes are not particularly limited. Dyes containing a variety of compounds can be used as coloring agents. Examples of such dyes containing a variety of compounds include: anthraquinone dyes, azo dyes, argyrocyanine dyes, aniline black dyes, phthalocyanine dyes, methylene dyes, argyrocyanine dyes, quinoline dyes, indigo dyes, indigo-based dyes, carbocation dyes, threne dyes, perinone dyes, perylene dyes, triarylmethane dyes, and argyrocyanine dyes.

[0075] Furthermore, examples of dyes that produce black color include: Solvent Black 3, 5, 7, 22, 27, 29, or 34; Mordant Black 1, 11, or 17; Acid Black 2 or 52; or Direct Black 19 or 154 (all numbers listed above represent CI numbers). Furthermore, examples of trade names include: "NUBIAN" (registered trademark) BLACK TH-807, TH-827, TH-827K, TN-870, PC-0855, PC-5856, PC-5857, PC-5877, PC-8550, TN-873, TN-877, or AH-807; OIL BLACK HBB or 860; "VALIFAST" (registered trademark) BLACK. 1807, 3904, 3810, 3820, 3830, 3840, 3866 or 3870 (all manufactured by ORIENT CHEMICAL INDUSTRIES CO.,LTD); or WATER BLACK 100-L, 19-L, 256-L, R-510 or 187-LM (all manufactured by ORIENT CHEMICAL INDUSTRIES CO.,LTD).

[0076] Examples of dyes that produce a red color include: Direct Red 2, 4, 9, 23, 26, 28, 31, 39, 62, 63, 72, 75, 76, 79, 80, 81, 83, 84, 89, 92, 95, 111, 173, 184, 207, 211, 212, 214, 218, 221, 223, 224, 225, 226, 227, 232, 233, 240, 241, 242, 243, or 247; Acid Red 35, 42, 51, 52, 57, 62, 80, 82, 111, 114, 118, 119, 127, 128, 131. 143, 145, 151, 154, 157, 158, 211, 249, 254, 257, 261, 263, 266, 289, 299, 301, 305, 319, 336, 337, 361, 396 or 397; Reactive Red 3, 13, 17, 19, 21, 22, 23, 24, 29, 35, 37, 40, 41, 43, 45, 49 or 55; or Basic Red 12, 13, 14, 15, 18, 22, 23, 24, 25, 27, 29, 35, 36, 38, 39, 45 or 46 (all numbers listed above represent CI numbers).

[0077] Examples of dyes that give an orange color include Basic Orange 21 or 23 (all numbers listed above refer to CI numbers).

[0078] Examples of dyes that produce yellow color include: Direct Yellow 8, 9, 11, 12, 27, 28, 29, 33, 35, 39, 41, 44, 50, 53, 58, 59, 68, 87, 93, 95, 96, 98, 100, 106, 108, 109, 110, 130, 142, 144, 161 or 163; Acid Yellow 17, 19, 23, 25, 39, 40, 42, 44, 49, 50, 61, 64, 76, 79, 110, 127, 135, 1 43, 151, 159, 169, 174, 190, 195, 196, 197, 199, 218, 219, 222 or 227; Reactive Yellow 2, 3, 13, 14, 15, 17, 18, 23, 24, 25, 26, 27, 29, 35, 37, 41 or 42; or Basic Yellow 1, 2, 4, 11, 13, 14, 15, 19, 21, 23, 24, 25, 28, 29, 32, 36, 39 or 40 (all numbers listed above represent CI numbers).

[0079] As an example of a dye that colors green, Acid Green 16 can be cited (the numbers above represent CI numbers).

[0080] Examples of dyes that produce a blue color include Acid Blue 9, 45, 80, 83, 90, or 185 (all numbers listed above represent CI numbers).

[0081] Examples of dyes that give a purple hue include: Direct Violet 7, 9, 47, 48, 51, 66, 90, 93, 94, 95, 98, 100, or 101; Acid Violet 5, 9, 11, 34, 43, 47, 48, 51, 75, 90, 103, or 126; Reactive Violet 1, 3, 4, 5, 6, 7, 8, 9, 16, 17, 22, 23, 24, 26, 27, 33, or 34; or Basic Violet 1, 2, 3, 7, 10, 15, 16, 20, 21, 25, 27, 28, 35, 37, 39, 40, or 48 (all numbers listed above represent CI numbers).

[0082] Further examples of dyes include: SUMILAN (registered trademark) dyes, LANYL dyes (registered trademark) (all manufactured by Sumitomo Chemical Co., Ltd.); ORASOL (registered trademark) dyes, ORACET (registered trademark) dyes, FILAMID (registered trademark) dyes, IRGASPERSE (registered trademark) dyes (all manufactured by Ciba Specialty Chemicals Co., Ltd.); ZAPON (registered trademark) dyes, NEOZAPON (registered trademark) dyes, NEPTUNE (registered trademark) dyes, ACIDOL (registered trademark) dyes (all manufactured by BASF); KAYASET (registered trademark) dyes, KAYAKALAN (registered trademark) dyes (all manufactured by Nippon Kayaku Co., Ltd.); VALIFAST (registered trademark) COLORS dyes, NUBIAN (registered trademark) COLORS dyes (ORIENT CHEMICAL INDUSTRIES) (manufactured by Clariant Co., Ltd.); "SAVINYL" (registered trademark) dyes, "SANDOPLAST" (registered trademark) dyes, "POLYSYNTHREN" (registered trademark) dyes, "LANASYN" (registered trademark) dyes (all manufactured by Clariant Japan Co., Ltd.); "AIZEN" (registered trademark) "SPILON" (registered trademark) dyes (manufactured by Hodogaya Chemical Industry Co., Ltd.); functional dyes (manufactured by Yamada Chemical Industry Co., Ltd.); or PLAST COLOR dyes, OIL COLOR dyes (all manufactured by Arimoto Chemical Industry Co., Ltd.).

[0083] The weight percentage of the colorant contained in the coloring layer is preferably 0.001% by weight or more, more preferably 0.01% by weight or more, more preferably 0.05% by weight or more, and preferably 1% by weight or less, more preferably 0.8% by weight or less, and more preferably 0.5% by weight or less. By having the weight percentage of the colorant at or above the aforementioned lower limit, the thin resin film can be endowed with the desired optical properties. Furthermore, by having the weight percentage of the colorant at or below the aforementioned upper limit, the exudation of the colorant from the coloring layer can be reduced, and the colorant can be better dispersed in the coloring layer.

[0084] The colorant contained in the coloring layer preferably has an average transmittance TrS at wavelengths above 480 nm and below 610 nm that is less than the average transmittance TrL at wavelengths above 700 nm and below 800 nm. That is, the difference between the average TrL and the average TrS (TrL-TrS) is greater than 0. Therefore, in the resin film, the relationship between the average linear transmittance AvS at wavelengths above 480 nm and below 610 nm and the average linear transmittance AvL at wavelengths above 700 nm and below 800 nm can easily satisfy the equation: AvL>AvS.

[0085] The transmittance of the colorant must be measured using a spectrophotometer. As the average transmittance over a specified wavelength range, the transmittance of the colorant is measured every 1 nm within that wavelength range, and the arithmetic mean of these transmittance measurements per 1 nm is used.

[0086] The transmittance of the colorant was measured under the following conditions. • Solvent: A solvent capable of dissolving or dispersing the colorant must be used. The solvent may also be a mixed solvent. Examples of solvents include: organic solvents such as toluene, xylene, methyl ethyl ketone (MEK), acetone, and ethanol; water; and mixed solvents of these. • Groove: Quartz groove with an optical path length of 10 mm • Concentration: 0.01% by weight

[0087] First, the colorant is dissolved or dispersed in a solvent to prepare a solution or dispersion with a concentration of 0.01% by weight. A dispersant can also be used. The transmittance is measured spectrophotometrically using a sample of this solution or dispersion placed in a quartz cell with an optical path length of 10 mm. In this case, the transmittance measured only in the quartz cell containing the solvent used is defined as 100%.

[0088] The difference in colorants contained in the coloring layer (TrL-TrS) is not particularly limited, but it is preferred to be above 5%, more preferably above 20%, more preferably above 50%, and preferably below 99.9%, more preferably below 99.5%, and even more preferably below 99%.

[0089] The average TrL of the colorant contained in the coloring layer is not particularly limited, but it is preferred to be above 10%, more preferably above 30%, more preferably above 70%, and preferably below 99.9%, more preferably below 99.5%, and even more preferably below 99%.

[0090] [Any layer]

[0091] In addition to the aforementioned coloring layer, the resin film may contain any layer. As an example of any layer, a resin layer that is a layer made of resin material can be given.

[0092] Examples of resin materials forming the resin layer can be the same as those exemplified as the resin material included in the coloring layer. The resin material forming the resin layer, which is of any type, can be the same as or a different type of resin material included in the aforementioned coloring layer. It is preferable that the resin material forming the resin layer is the same as the resin material included in the coloring layer.

[0093] The resin film may also contain a resin layer, which may contain the aforementioned colorant or may not contain a colorant, but it is preferable that the resin layer does not contain a colorant.

[0094] The weight percentage of the colorant contained in the resin layer is set to 100% by weight, preferably less than 0.01% by weight, more preferably less than 0.005% by weight, more preferably less than 0.001% by weight, and usually more than 0% by weight, or even 0% by weight.

[0095] By keeping the weight ratio of the colorant in the resin layer below the aforementioned upper limit, the exudation of the colorant from the resin film into the colored layer and the resin layer can be reduced.

[0096] The resin film, as any layer, may comprise multiple resin layers. For example, the resin film may comprise a first resin layer and a second resin layer as arbitrary layers.

[0097] The following illustrations use figures to describe a self-emissive display having a resin film having a coloring layer, a first resin layer and a second resin layer, as a variation of the self-emissive display related to this embodiment.

[0098] Figure 2 is a cross-sectional schematic diagram illustrating a self-emissive display related to another embodiment of the present invention.

[0099] The self-emissive display 200 includes a resin film 220 and a self-emissive panel 110. The self-emissive panel 110 has the same structure as the self-emissive panel 110 of the self-emissive display 100, so its description is omitted.

[0100] The resin film 220 is disposed on the viewing side of the self-emissive panel 110, that is, on the side of the image display surface 110U. In this embodiment, the resin film 220 is disposed on the image display surface 110U of the self-emissive panel 110. In this embodiment, the resin film 220 is in direct contact with the self-emissive panel 110, but in another embodiment, other layers such as an adhesive layer (pressure-sensitive adhesive layer) may be disposed between the resin film 220 and the self-emissive panel 110.

[0101] The resin film 220 sequentially comprises a first resin layer 222a, a coloring layer 221, and a second resin layer 222b. The coloring layer 221 is disposed between the first resin layer 222a and the second resin layer 222b. The first resin layer 222a is directly disposed on one of the main surfaces 221D of the coloring layer 221. The second resin layer 222b is directly disposed on the other main surface 221U of the coloring layer 221. The resin film 220 is disposed such that the first resin layer 222a is in contact with the image display surface 110U of the self-emissive panel 110.

[0102] The first resin layer and the second resin layer can be formed using the same resin material or using different types of resin materials. From the viewpoint of simplifying the manufacturing equipment, it is preferable that the first resin layer and the second resin layer are formed using the same resin material.

[0103] The first resin layer and the second resin layer may have the same thickness or different thicknesses. From the viewpoint of reducing the curling of the resin film, the ratio of the thickness of the first resin layer to the thickness of the second resin layer (first resin layer / second resin layer) is preferably 3 / 1 to 1 / 3, and more preferably 2 / 1 to 1 / 2.

[0104] [Optical properties of resin films]

[0105] As described above, the resin film of this embodiment exhibits a lower average linear transmittance (AvS) at wavelengths above 480 nm and below 610 nm than the lower average linear transmittance (AvL) at wavelengths above 700 nm and below 800 nm. That is, the difference between the average AvL and the average AvS (AvL-AvS) (%) is greater than 0.

[0106] The linear transmittance of the resin film is measured using a spectrophotometer. As the average linear transmittance over a specified wavelength range, the linear transmittance of the resin film is measured every 1 nm within that wavelength range, and the arithmetic mean of these 1 nm measurements is used.

[0107] The difference between the average value AvL and the average value AvS (AvL-AvS) is not particularly limited, but it is preferable to be above 5%, better to be above 10%, even better to be above 15%, and preferably below 70%, better to be below 65%, and even better to be below 60%. By keeping the difference (AvL-AvS) within the aforementioned range, when combining various light sensors such as infrared sensors with a self-emissive display, the reflection of the self-emissive display can be reduced without significantly affecting the detection function of the light sensors. Furthermore, the color tone of the self-emissive display can be adjusted.

[0108] The average AvL is not particularly limited, but 60% or higher is preferred, 70% or higher is better, 75% or higher is even better, and below 99% is preferable, below 95% is better, and below 94% is even better. By keeping the average AvL within the aforementioned range, when combining various light sensors, such as infrared sensors, with a self-emissive display, a high balance can be achieved between reducing the reflectivity of the self-emissive display and maintaining brightness without significantly affecting the detection function of the light sensor. Furthermore, transparency in the visible light wavelength region can be maintained.

[0109] The resin film of this embodiment preferably has a linear transmittance of 35% or more at a wavelength of 550 nm, more preferably 37% or more, more preferably 40% or more, and preferably 75% or less, more preferably 73% or less, and more preferably 70% or less. By achieving a linear transmittance of the resin film at 550 nm within the aforementioned range, a high balance can be achieved between reducing the reflectivity of the self-emissive display and maintaining its brightness.

[0110] In one embodiment, the in-plane phase difference Re of the resin film is preferably below 1000 nm, more preferably below 800 nm, and even more preferably below 500 nm, and is usually above 0 nm, but can also be above 5 nm.

[0111] In another embodiment, the resin film may also possess an in-plane phase difference Re, which functions as a λ / 4 plate. In yet another embodiment, the in-plane phase difference Re of the resin film is preferably 100 nm or more, more preferably 102 nm or more, even more preferably 105 nm or more, and preferably 160 nm or less, even more preferably 158 nm or less, and even more preferably 155 nm or less. By having the resin film possess an in-plane phase difference Re, which functions as a λ / 4 plate, a linear polarizer can be further incorporated into the resin film to form a circular polarizer, and the color tone of the self-emissive display can be adjusted.

[0112] The haze of the resin film is not particularly limited, but from the perspective of achieving high-resolution self-emissive displays, it is preferable to be below 1%, preferably below 0.3%, and typically above 0.01%. Haze must be measured using a haze meter.

[0113] [Thickness of the resin film]

[0114] The thickness of the resin film can be made to any thickness depending on the proportion of colorant in the coloring layer. The thickness of the resin film can be, for example, 10 μm or more, 30 μm or more, and 300 μm or less, for example, 150 μm or less.

[0115] The ratio of the thickness of the coloring layer to the thickness of the resin film is preferably 10% or more, preferably 25% or more, and usually 100% or less. When the resin film does not contain any layer, it is 100%; when the resin film contains any layer, it can be 90% or less, or 75% or less.

[0116] [1.3. Arbitrary constituent elements]

[0117] In addition to the aforementioned self-emissive panel and resin film, a self-emissive display may also include any constituent elements. For example, a self-emissive display may also include: an adhesive layer (including a pressure-sensitive adhesive layer) for bonding the self-emissive panel and the resin film, a polarizing element, a protective film, a hard coating layer, an anti-reflective layer, and an anti-glare layer.

[0118] [1.4. Reflectivity of Self-Emitting Displays]

[0119] The reflectivity of the self-emissive display in this embodiment is reduced to a level suitable for indoor use. Specifically, the reflectivity of the self-emissive display is, for example, 8% or less, 6% or less, and typically 0% or more. With reflectivity in this range, the self-emissive display generally provides sufficient contrast for indoor use.

[0120] [2. Resin film for self-emissive displays]

[0121] The aforementioned resin film included in a self-emissive display is suitable because it reduces the reflectivity of the self-emissive display. Therefore, the aforementioned resin film is advantageous as a resin film for use in a self-emissive display.

[0122] [3. Method for manufacturing resin film]

[0123] The resin film (resin film for self-emissive display) included in the aforementioned self-emissive display can be manufactured by any manufacturing method. The resin film can be manufactured by, for example, a manufacturing method including the following steps (1) and (2).

[0124] Process (1): Mix raw materials containing resin materials and colorants to obtain colored resin materials. Step (2): Extruding the aforementioned colored resin material to form an extruded film.

[0125] [3.1. Process (1)]

[0126] In step (1), raw materials containing resin materials and colorants are mixed to obtain colored resin materials.

[0127] The resin material included as a raw material is the resin material contained in the coloring layer of the resin film. The colorant included as a raw material is the colorant contained in the coloring layer of the resin film.

[0128] As a colorant, it is preferable to use a colorant whose average transmittance TrS at wavelengths above 480 nm and below 610 nm is less than the average transmittance TrL at wavelengths above 700 nm and below 800 nm.

[0129] The form of the resin material and the form of the colorant in the raw materials used to obtain the colored resin material are not particularly limited. For example, a mixture of resin material particles and colorant powder, or a mixture of masterbatch particles containing a high concentration of colorant in the resin material and resin material particles can be used as raw materials. The weight ratio of the colorant in the raw material can be set according to the desired weight ratio of the colorant in the colored layer, and can be made to be the same as the desired weight ratio of the colorant in the colored layer.

[0130] The mixing of raw materials is usually carried out above the glass transition temperature (Tg) of the resin material and below a temperature at which the colorant and resin material will not deteriorate. The mixing of raw materials can be carried out, for example, above 150°C, above 200°C, below 500°C, or below 400°C.

[0131] The mixing of raw materials must be carried out through any mixing device such as a small mixing machine or a single-shaft extruder.

[0132] The colored resin material obtained by mixing raw materials can be used directly in step (2) without further processing, or the colored resin material obtained by mixing raw materials can be processed into easily manipulated shapes such as granules before being used in step (2).

[0133] [3.2. Process (2)]

[0134] In step (2), the aforementioned colored resin material is extruded to form an extruded film.

[0135] The formation of extruded films is typically achieved by extruding molten colored resin material into a film shape. The extruded colored resin material is then cooled by casting or other methods on cooling rollers to produce the extruded film. The resulting extruded film can be used as a resin film on its own, or it can be further processed in any process for use as a resin film.

[0136] Long strip extruded films can be obtained by continuously extruding colored resin materials.

[0137] In the case where the resin film system has any layer other than the coloring layer, the coloring resin material and the material of the arbitrary layer can also be co-extruded in step (2).

[0138] By co-extruding a colored resin material with an arbitrary layer of material, a multilayer extruded film is formed, comprising a colored layer consisting of a layer of colored resin material and an arbitrary layer.

[0139] Co-extrusion is carried out by supplying the coloring resin material and other materials for forming any layer to a co-extrusion apparatus equipped with components for multi-layering, such as multi-layer molds and multi-layer feed blocks.

[0140] [3.3. Arbitrary Process]

[0141] In addition to the aforementioned steps (1) and (2), the method for manufacturing resin films may also include any other steps.

[0142] As an example of any process, one could cite the process of stretching the extruded film obtained in process (2). By stretching the extruded film, a phase difference is imparted to the resin film.

[0143] As an extension, any condition corresponding to the phase difference, etc., of the desired resin film can be selected.

[0144] There are no restrictions on the direction of extension; examples include: the long side direction, the width direction, and the oblique direction. Here, "oblique direction" refers to a direction that is perpendicular to the thickness direction and neither parallel nor perpendicular to the width direction. Furthermore, the extension direction can be unidirectional or two or more directions. Accordingly, examples of extension methods include: uniaxial extension methods such as extending the extruded film uniaxially along the long side direction (longitudinal uniaxial extension method); uniaxial extension methods such as extending the extruded film uniaxially along the width direction (transverse uniaxial extension method); biaxial extension methods such as extending the extruded film simultaneously along the long side direction and the width direction, and sequential biaxial extension methods such as extending the extruded film along one of the long side direction and the width direction followed by extending it along the other direction; and methods such as extending the extruded film obliquely (oblique extension method).

[0145] The extension ratio can be set to, for example, 1.05 to 3 times, or 1.2 to 2.5 times.

[0146] Other possible processes include: surface treatment processes such as corona treatment on the resin film, and processes such as heating the resin film to reduce dimensional changes.

[0147] [4. Manufacturing method of self-emissive display]

[0148] Self-emissive displays can be manufactured by any method. For example, a self-emissive display can be manufactured by a method that includes a process of preparing a resin film and a self-emissive panel, and a process of bonding the resin film and the self-emissive panel with a layer of intermediate adhesive (including pressure-sensitive adhesive).

[0149] As a resin film, a resin film manufactured by a method including the aforementioned steps (1) and (2) and, as required, any other steps may be used.

[0150] Example

[0151] The following embodiments are disclosed to specifically illustrate the present invention. However, the present invention is not limited to the embodiments disclosed below, and may be implemented in any way without departing from the scope of the claims and their equivalents.

[0152] In the following description, the terms "%" and "parts" are by weight unless otherwise noted. Furthermore, the operations described below are performed at room temperature (20℃±15℃) and normal pressure (1 atm) unless otherwise noted.

[0153] [Evaluation Method]

[0154] (Measurement of reflectivity)

[0155] The reflectance (%) of the panel and the reflectance (%) of the display with assembled resin film were measured using a spectrophotometer (CM2600d, manufactured by KONICA MINOLTA). The reflectance was obtained by setting the measurement light source to D65 and the measurement optical system to include positive reflection (SCI).

[0156] (Linear transmittance, AvL, AvS)

[0157] The linear transmittance of the resin film was measured every 1 nm in the measurement wavelength range of 300 nm to 800 nm using a spectrophotometer (V570, manufactured by Japan Spectrophotometer Co., Ltd.).

[0158] The obtained spectral readings show the linear transmittance (%) at a wavelength of 550 nm.

[0159] The arithmetic mean of the linear transmittance measured per 1 nm in the wavelength range above 480 nm and below 610 nm is determined and defined as the average value of the linear transmittance AvS (%) in the wavelength range above 480 nm and below 610 nm.

[0160] The arithmetic mean of the linear transmittance measured per 1 nm in the wavelength range above 700 nm and below 800 nm is obtained and defined as the average value AvL (%) of the linear transmittance above 700 nm and below 800 nm.

[0161] (Haze)

[0162] The haze of the resin film was measured using a haze meter (NDH4000, manufactured by Nippon Denshoku Kogyo Co., Ltd.) in accordance with the conditions of JIS K7361.

[0163] [Transmittance of colorant]

[0164] Using a spectrophotometer (V570, manufactured by Nippon Spectrophotometer Co., Ltd.), the transmittance of the colorant (PC-5857, manufactured by ORIENT CHEMICAL INDUSTRIES CO.,LTD, an oil-soluble dye) used in the following examples and comparative examples was measured per 1 nm under the following conditions at wavelengths from 300 nm to 800 nm. The transmittance measured in a quartz bath containing only the solvent (toluene) was defined as 100%. Solvent: Toluene • Concentration: 0.01% by weight • Groove: Quartz groove with an optical path length of 10 mm

[0165] Calculate the arithmetic mean of the transmittance measured per 1 nm in the wavelength range above 480 nm and below 610 nm, and define it as the average transmittance TrS(%) in the wavelength range above 480 nm and below 610 nm.

[0166] Calculate the arithmetic mean of the transmittance measured per 1 nm in the wavelength range above 700 nm and below 800 nm, and define it as the average transmittance TrL (%) in the wavelength range above 700 nm and below 800 nm.

[0167] The results showed that TrS was 4.7%, TrL was 94.8%, and (TrL-TrS) was 90.1%.

[0168] [Example 1]

[0169] (1-1. Process for obtaining colored resin material (1))

[0170] 99.7 parts of resin material containing hydrides of cyclic olefin polymers (ZEONOR 1430, manufactured by Zeon Corporation, Japan, glass transition temperature Tg=138°C) and 0.3 parts of colorant (PC-5857, manufactured by ORIENT CHEMICAL INDUSTRIES CO.,LTD, oil-soluble dye) were placed in a glass bottle and shaken to coat the particles with the colorant, thus creating a raw material (M) containing the resin material and colorant. This raw material (M) was then mixed using a small mixer, "Xplore" (manufactured by Xplore Instruments), to obtain a colored resin material.

[0171] (1-2. The process of forming the extruded film (2))

[0172] Next, the colored resin material is fed into a film forming machine and extruded into a film with a thickness of 31 μm and a width of 30 mm to obtain an extruded film. The extruded film has a single-layer structure consisting of a colored layer containing resin material and a colorant. The linear transmittance and haze of the completed extruded film (resin film) were measured at 550 nm, with a linear transmittance of 67.7% and a haze of 0.1%. Furthermore, the average linear transmittance AvS at wavelengths above 480 nm and below 610 nm and the average linear transmittance AvL at wavelengths above 700 nm and below 800 nm are shown in the table below.

[0173] An extruded film, serving as the resin film, is laminated onto the image display surface of a commercially available organic light-emitting diode (OLED) panel with a reflectance of 10% to obtain a self-emissive display. The resulting self-emissive display has a reflectance of 4%, reduced brightness in black display mode (i.e., when the screen displays black), and improved display characteristics during indoor observation.

[0174] [Example 2]

[0175] Except for the changes described below, follow the procedure in Example 1 to obtain an extruded film (resin film). • In (1-1), the amount of ZEONOR (registered trademark) 1430 particles was changed to 99.9 parts, and the amount of colorant (PC-5857, manufactured by ORIENT CHEMICAL INDUSTRIES CO.,LTD, oil-soluble dye) was changed to 0.1 parts. • In (1-2), the extrusion conditions of the film forming machine are adjusted to extrude the colored resin material into a film with a thickness of 69 μm and a width of 30 mm.

[0176] The linear transmittance and haze of the completed extruded film (resin film) were measured at 550 nm. The linear transmittance was 74.4%, and the haze was 0.1%. This extruded film, serving as the resin film, was laminated onto the image display surface of a commercially available OLED panel with a reflectance of 10% to obtain a self-emissive display. The obtained self-emissive display exhibited a reflectance of 5%, reduced brightness in blackout states, and improved display characteristics during indoor observation.

[0177] [Example 3]

[0178] In Example 3, a multilayer extruded film having a layer structure of (first resin layer) / (coloring layer) / (second resin layer) was formed according to the following procedure.

[0179] A film forming apparatus with a multi-manifold die is prepared to form a three-layer film by co-extruding two resin materials. ZEONOR (registered trademark) 1430 granules are prepared as the materials for the first and second resin layers. These granules are placed into a first uniaxial extruder equipped with a dual-lead screw and heated to melt.

[0180] Following the procedure in Example 1 (1-1), a raw material (M) containing resin material and colorant (granules coated with colorant) is prepared. This raw material (M) is placed into a second single-screw extruder equipped with a dual-lead screw and heated to melt it, preparing a coloring resin material for forming the coloring layer.

[0181] Molten ZEONOR (registered trademark) 1430 resin material, which serves as the material for both the first and second resin layers, is fed through a leaf disk filter with 10 μm sieve openings to one manifold of a multi-manifold mold (surface roughness Ra = 0.1 μm). Meanwhile, the aforementioned prepared colored resin material is fed through a leaf disk filter with 10 μm sieve openings to another manifold.

[0182] Resin material, which serves as the first and second resin layers, and coloring resin material are simultaneously extruded from a manifold die to obtain a thin film of molten resin with a three-layer structure of (first resin layer) / (coloring layer) / (second resin layer). This thin film of molten resin is cast on cooling rollers with a surface temperature adjusted to 130°C, and then passed between two cooling rollers with a surface temperature adjusted to 50°C to obtain a three-layer extruded film made of two materials. This extruded film has a layer structure of (first resin layer (thickness 15 μm)) / (coloring layer (thickness 70 μm)) / (second resin layer (thickness 10 μm)), with an overall thickness of 95 μm.

[0183] The linear transmittance and haze of the completed extruded film (resin film) at 550 nm were measured. The results showed that the linear transmittance was 49% and the haze was 0.1%. Furthermore, the average linear transmittance AvS at wavelengths above 480 nm and below 610 nm, and the average linear transmittance AvL at wavelengths above 700 nm and below 800 nm are shown in the table below.

[0184] An extruded film, serving as the resin film, is bonded to the image display surface of a commercially available OLED panel with a reflectivity of 10% in contact with the first resin layer to obtain a self-emissive display. The obtained self-emissive display has a reflectivity of 2.5%, reduced brightness in black states, and improved display characteristics during indoor observation.

[0185] [Comparative Example 1]

[0186] Except for the changes described below, operate in accordance with Example 1 to obtain a self-emissive display. • The extruded film, which is a resin film, is laminated onto the image display surface of a commercially available OLED panel with a reflectivity of 53%.

[0187] The obtained self-emissive display has a reflectivity of 21%, and its black display state is brighter than that of Examples 1-3, making it difficult to see in indoor observation.

[0188] [Comparative Example 2]

[0189] Except for the changes described below, operate in accordance with Example 1 to obtain a self-emissive display. • The extruded film, which is a resin film, is laminated onto the image display surface of a commercially available OLED panel with a reflectivity of 45%.

[0190] The obtained self-emissive display has a reflectivity of 18%, and its black display state is brighter than that of Examples 1-3, making it difficult to see in indoor observation.

[0191] [Measurement results of resin film]

[0192] The measurement results of the resin films used in the examples and comparative examples are shown in the table below.

[0193] In the table below, the abbreviations have the following meanings. "AvS": Average linear transmittance in the wavelength range of 480 nm to 610 nm. "AvL": The average linear transmittance at wavelengths of 700 nm to 800 nm.

[0194] Table 1 Table 1 Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 550nm Linear transmittance 67.7% 74.4% 49% 67.7% 67.7% AvS 67.3% 74% 48.6% 67.3% 67.3% AvL 88% 88.5% 85.5% 88% 88%

[0195] The following can be concluded from the above results.

[0196] It is known that the self-emissive display includes a self-emissive panel with a reflectivity of less than 40% and a resin film, and the average value AvS of the resin film is less than the average value AvL (Examples 1 to 3). Its reflectivity is less than 8% and reduced to a level that can be used indoors.

[0197] On the other hand, self-emissive displays that include self-emissive panels with a reflectivity greater than 40% have a reflectivity exceeding 8%, making them bright in black and difficult to see indoors.

[0198] The above results indicate that the reflectivity of the self-emissive display of the present invention is reduced to a level suitable for indoor use.

[0199] 100: Self-illuminating display 110: Self-illuminating panel 110U: Image display surface 120: Resin film (coloring layer) 200: Self-illuminating display 220: Resin film 221: Shading layer 221U: Main Surface 221D: Main Surface 222a: First resin layer 222b: Second resin layer

Claims

1. A self-emissive display comprising a self-emissive panel with a reflectance of 40% or less and a resin film disposed on the viewing side of the self-emissive panel, wherein the resin film comprises a coloring layer containing a resin material and a colorant, and the average value AvS of the linear transmittance at wavelengths of 480 nm or more and 610 nm or less is less than the average value AvL of the linear transmittance at wavelengths of 700 nm or more and 800 nm or less, the difference (AvL−AvS) between the average value AvL and the average value AvS is 5% or more and 70% or less, and the linear transmittance of the resin film at a wavelength of 550 nm is 35% or more and 75% or less.

2. The self-emissive display as claimed in claim 1, wherein the aforementioned resin film further comprises a first resin layer and a second resin layer, and the aforementioned coloring layer is disposed between the aforementioned first resin layer and the aforementioned second resin layer.

3. The self-emissive display as described in claim 1 or 2, wherein the aforementioned resin film has an in-plane phase difference of more than 100 nm and less than 160 nm.

4. The self-emissive display as claimed in claim 1 or 2, wherein the aforementioned resin material comprises one or more of the group consisting of cycloolefin polymers and their hydrides.

5. The self-emissive display as described in claim 1 or 2, wherein the aforementioned coloring layer contains 0.001% by weight or more and 1% by weight of the aforementioned colorant.

6. The self-emissive display as described in claim 1 or 2, wherein the thickness of the aforementioned resin film is 10 μm or more and 300 μm or less, and the ratio of the thickness of the aforementioned coloring layer to the thickness of the aforementioned resin film is 10% or more and 100% or less.

Images