KR102012476B1 - A colored photosensitive resin composition for formming the frontal light-shielding layer of a display device - Google Patents
A colored photosensitive resin composition for formming the frontal light-shielding layer of a display device Download PDFInfo
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- KR102012476B1 KR102012476B1 KR1020130090411A KR20130090411A KR102012476B1 KR 102012476 B1 KR102012476 B1 KR 102012476B1 KR 1020130090411 A KR1020130090411 A KR 1020130090411A KR 20130090411 A KR20130090411 A KR 20130090411A KR 102012476 B1 KR102012476 B1 KR 102012476B1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0045—Photosensitive materials with organic non-macromolecular light-sensitive compounds not otherwise provided for, e.g. dissolution inhibitors
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0047—Photosensitive materials characterised by additives for obtaining a metallic or ceramic pattern, e.g. by firing
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Abstract
As a photosensitive resin composition for forming the front light shielding layer of a display device including a colorant (A) containing a white pigment, an alkali-soluble binder resin (B), a photopolymerizable compound (C), a photopolymerization initiator (D) and a solvent (E). ,
The colorant (A) is a photosensitive resin composition for forming a front light shielding layer of a display device, characterized in that it comprises a white pigment, characterized in that the Z value calculated by the following formula:
[ Equation ]
Z = ((XW) 2 ) + ((XY) 2 )
Where
W is a reflectance value at 430 nm, X is a reflectance value at 550 nm, and Y is a reflectance value at 670 nm.
Description
The present invention relates to a photosensitive resin composition for forming a front light shielding layer of a display device.
In general, the front edges of display devices such as liquid crystal displays (LCDs), plasma display panels (PDPs), organic light emitting diodes (OLEDs), and active matrix organic light emitting diodes (AMOLEDs) reduce reflectance to improve display visibility. A bezel part, which is a front shielding layer of a display device, is formed to perform a function of shielding light from the inside of the display, increasing contrast ratio, and preventing the inside of the display from being visible. As a material of the bezel part, a black coating composition is used in many functional aspects, but recently, a coating composition having various colors is used in consideration of various tastes and aesthetics of a display.
By the way, when the coating material of a light color having a low light shielding rate such as white, pink, etc. is used as the coating material of the bezel part, since the inside of the display is easily exposed through the bezel part, under the coating layer formed of the coating material of the light color The bezel portion is formed by further forming a coating layer of gray or black color.
However, in the case of forming the bezel part as a multilayer coating layer in this way, the optical density (OD) is increased by the coating layer of the gray or black color of the lower layer, so that the light shielding rate is improved, but the transmittance of the coating layer of the bright color of the upper layer is higher, The problem arises that the coating layer of gray or black color is seen. Therefore, various methods for improving this point have been studied. In addition, efforts have been made to implement high reflectance in the bezel coating in consideration of the aesthetics of the display.
On the other hand, in recent years, the demand and supply of a display device driven by a touch method has been greatly expanded. According to the driving method, the touch panel includes a resistance method, an electrostatic method, a SAW method, and an infrared method. The electrostatic method is mainly used as a method of detecting and driving static electricity generated in a human body. In the past, in addition to the tempered glass corresponding to the front surface of the product, one or two separate inner glass plates or transparent films for vacuum deposition of the ITO pattern are inserted into the tempered glass, thereby inserting the ITO pattern into the inner glass plate or the transparent film. After forming each side or between the sides of the assembly to complete the touch panel. However, since the thickness of the touch panel is increased, a method of manufacturing a touch panel has recently been adopted, including a process of vacuum depositing the ITO pattern directly on tempered glass. In this manner, a bezel part is formed on the tempered glass, and an ITO pattern is directly formed. Therefore, the bezel portion formed in the tempered glass is exposed to chemicals in a process such as lithography for forming a pattern of the ITO electrode, and is exposed to high temperature during the heat treatment of the ITO electrode. Therefore, chemical resistance and heat resistance are particularly important for the bezel coating material of the touch panel.
In particular, since the yellowing occurs in the bezel coating after the high temperature post-treatment process to impair the aesthetics, limit the use of the product, research to solve this problem is actively being made.
The present invention is to solve the problems of the prior art as described above,
An object of the present invention is to provide a photosensitive resin composition for forming a front light shielding layer of a display device that greatly improves the yellowing resistance of a light shielding layer against yellowing generated in a high temperature post-treatment step.
Further, an object of the present invention is to provide a photosensitive resin composition for forming a front light shielding layer of a display device that is excellent in reliability and excellent in pattern formation and residual film ratio even when chemically treated or heat treated at a high temperature. .
In addition, another object of the present invention is to provide a display device including a front light blocking layer of a display device made of the composition.
The present invention,
As a photosensitive resin composition for forming the front light shielding layer of a display device including a colorant (A) containing a white pigment, an alkali-soluble binder resin (B), a photopolymerizable compound (C), a photopolymerization initiator (D) and a solvent (E). ,
The white pigment provides a photosensitive resin composition for forming a front light shielding layer of a display device, wherein a Z value calculated by the following equation is 40 to 150:
[ Equation ]
Z = ((X-W) 2 ) + ((X-Y) 2 )
Where
W is a reflectance value at 430 nm, X is a reflectance value at 550 nm, and Y is a reflectance value at 670 nm.
In addition, the present invention
Provided is a display device including a front light shielding layer formed by applying a photosensitive resin composition for forming a front light shielding layer of the display device on a transparent substrate.
The photosensitive resin composition for forming the front light shielding layer of the display device of the present invention provides an effect of greatly improving the yellowing resistance of the front light shielding layer by selecting and using a white pigment having excellent yellowing resistance based on the reflectance of the white pigment.
In addition, even when chemically treated or heat treated at a high temperature, it shows excellent chemical resistance and heat resistance, thereby providing excellent reliability.
It also provides excellent pattern formability and residual film ratio.
1 is a graph showing the measurement of the reflectance of the photosensitive resin composition for forming the front light shielding layer of the display device manufactured in Example 2 and Comparative Example 2.
The present invention,
As a photosensitive resin composition for forming the front light shielding layer of a display device including a colorant (A) containing a white pigment, an alkali-soluble binder resin (B), a photopolymerizable compound (C), a photopolymerization initiator (D) and a solvent (E). ,
The white pigment relates to a photosensitive resin composition for forming a front light shielding layer of a display device, wherein a Z value calculated by the following equation is 40 to 150:
[ Equation ]
Z = ((X-W) 2 ) + ((X-Y) 2 )
Where
W is a reflectance value at 430 nm, X is a reflectance value at 550 nm, and Y is a reflectance value at 670 nm.
In the present invention, the relationship of W, X and Y is desired to satisfy W≥X≥Y.
Hereinafter, the coloring photosensitive resin composition will be described in detail for each component.
Coloring material (A)
In the case of a composition using a white pigment, it is known that yellowing occurs after a high temperature process, causing a problem of limiting the use of the product. In order to solve this problem, the present invention measures the reflectance of white pigments at 430 nm, 550 nm, and 670 nm, and selects and uses white pigments having excellent yellowing suppression properties to solve the yellowing phenomenon caused by the high temperature post-treatment process. It is characterized by.
In general, the white pigment has a very high reflectance in the wavelength range of the blue region, and has a low reflectance in the wavelength range of the green and red regions compared to the wavelength range of the blue region. The present inventors have completed the present invention by finding that the colorant has excellent patterning properties and the greater the difference in reflectance between the blue region and the red region, the better the yellowing resistance.
In the present invention, the Z value calculated by the following formula is characterized by using a white pigment of 40 to 150, more preferably 45 to 120.
Z = ((X-W) 2 ) + ((X-Y) 2 )
Where
W is the value of reflectance at 430 nm, X is the value of reflectance at 550 nm, and Y is the reflectance value at 670 nm.
When the Z value of the white pigment particles is less than 40, the yellowness resistance is not good because the reflectance is high in the wavelength band of the red region, and when the Z value exceeds 150, there is a problem that the patternability is lowered.
As the white pigment, TiO 2 may be preferably used.
The average particle size of the white pigment is preferably 150nm ~ 300nm. When the average particle size is less than 150nm, since the white pigment exhibits UV light blocking property, it is difficult to form a pattern easily because UV light does not penetrate sufficiently under the exposure using the front shielding layer forming composition of the display device including the same. Cause. In addition, when the average particle size exceeds 300nm, there is a problem that the dispersibility and storage stability is poor. When the white pigment having an average particle size of the above range is used, the photosensitive resin composition for forming the front light shielding layer of the display device including the same improves storage stability, and improves UV light shielding properties, thereby enabling formation of a good pattern.
As the white inorganic pigment, pigments known in the art may be used when the above-mentioned conditions are satisfied. As said white inorganic pigment, CI pigment white 4, 5, 6, 6: 1, 7, 18, 18: 1, 19, 20, 22, 25, 26, 27, 28, 32 etc. are mentioned, for example. have. Among the white inorganic pigments, C.I. Pigment White 6 or White 22 may be preferably used in terms of reflection efficiency and whiteness. These can be used individually or in mixture of 2 or more types.
TiO 2 included in the CI Pigment White 6 may be used as an effective white colorant because the price is low and the refractive index is high and the reflectivity is excellent.
The TiO 2 preferably has a rutile structure. TiO 2 having a rutile structure has excellent whiteness and can therefore be preferably used.
TiO 2, which is the white pigment, may be subjected to a surface treatment using a resin treatment, a pigment derivative having an acidic group or a basic group introduced therein, a graft treatment on the surface of the pigment by a polymer compound, an atomization treatment or an impurity by a sulfate atomization method, or the like. The cleaning treatment with an organic solvent, water, or the like for removing the ions may be performed, or the ionic impurities may be removed by an ion exchange method.
The TiO 2 is a surface of SiO 2 , Al 2 O 3 And at least one selected from the group consisting of ZrO 2 may be preferably used.
More preferably, SiO 2 , Al 2 O 3 And those sequentially surface treated with ZrO 2 may be used.
Even more preferably the outermost surface of TiO 2 surface-treated above Surface treated with organic material can be used. For example, trimethyl propane (TMP), pentaerythritol, or the like may be used as the organic material. Coating the surface by coating TiO 2 with a single molecule layer of low polarity using the above components lowers the energy required for TiO 2 dispersion and prevents TiO 2 from being compressed and aggregated.
The surface treatment of TiO 2 as described above while lowering the photocatalytic activity of the TiO 2 improves the reflected luminance characteristic. In particular, when the surface treatment of each of SiO 2 , Al 2 O 3 , and ZrO 2 is applied to TiO 2 , reliability such as heat resistance and chemical resistance is improved. The surface treatment may be treatment by encapsulation.
The TiO 2 surface treated is preferably 85 to 95% by weight of the TiO 2 core. When the surface of the TiO 2 core is treated within the above range, the whiteness is excellent and the reflection luminance is excellent.
Specific examples of the TiO 2 include R-101, R-102, R-103, R-104, R-105, R-350, R-706, R-794, R-796, which are commercially available from DuPont. TS-6200, R-900, R-902, R-902 +, R-931, R-960, and the like, and also Huntman's R-FC5, TR81, TR88 and ISK CR-57 etc. can be illustrated.
It is more preferable that the coloring agent (A) is included in the solid content in the photosensitive resin composition for forming the front light shielding layer of the display device, in an amount of 10 to 90% by weight, and 20 to 70% by weight, based on the total weight. When the colorant is included in the above range, the whiteness is excellent when forming the front light shielding layer of the display device, and the shielding property is also excellent, which is preferable.
The present invention exhibits an excellent effect when the white pigment is contained in 25 to 60% by weight or more based on the total weight of solids of the colorant (A).
Solid content in this invention means the component except a solvent.
Alkali Soluble Binder Resin (B)
The alkali-soluble binder resin is not particularly limited as long as it can be dissolved in the solvent of the present invention, and functions as a binder resin for the colorant and can be dissolved in an alkaline developer.
Examples of the alkali-soluble binder resin include a carboxyl group-containing monomer and a copolymer with another monomer copolymerizable with the monomer.
As said carboxyl group-containing monomer, For example, unsaturated monocarboxylic acid, unsaturated carboxylic acid, such as unsaturated polyhydric carboxylic acid which has 1 or more carboxyl groups in molecules, such as unsaturated dicarboxylic acid and unsaturated tricarboxylic acid, etc. Can be mentioned.
As said unsaturated monocarboxylic acid, acrylic acid, methacrylic acid, crotonic acid, (alpha)-chloroacrylic acid, cinnamic acid etc. are mentioned, for example.
As said unsaturated dicarboxylic acid, a maleic acid, a fumaric acid, itaconic acid, a citraconic acid, a mesaconic acid, etc. are mentioned, for example.
The unsaturated polyhydric carboxylic acid may be an acid anhydride, and specific examples thereof include maleic anhydride, itaconic anhydride and citraconic anhydride. In addition, the unsaturated polyhydric carboxylic acid may be a mono (2-methacryloyloxyalkyl) ester thereof, for example, monosuccinate mono (2-acryloyloxyethyl), monosuccinate mono (2-methacryloyloxy Ethyl), mono phthalate (2-acryloyloxyethyl), mono phthalate (2-methacryloyloxyethyl), and the like. The unsaturated polyhydric carboxylic acid may be mono (meth) acrylate of the sock end dicarboxy polymer, and examples thereof include ω-carboxypolycaprolactone monoacrylate, ω-carboxypolycaprolactone monomethacrylate, and the like. have.
The said carboxyl group-containing monomer can be used individually or in mixture of 2 or more types, respectively.
As another monomer copolymerizable with the said carboxyl group-containing monomer, For example, styrene, (alpha) -methylstyrene, o-vinyl toluene, m-vinyl toluene, p-vinyl toluene, p-chloro styrene, o-methoxy styrene, m- Methoxy styrene, p-methoxy styrene, o-vinyl benzyl methyl ether, m-vinyl benzyl methyl ether, p-vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m-vinyl benzyl glycidyl ether, p Aromatic vinyl compounds such as vinylbenzyl glycidyl ether and indene; Methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, i-propyl acrylate, i-propyl methacrylate, n-butyl acrylate, n-butyl methacrylate, i-butyl acrylate, i-butyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, t-butyl acrylate, t-butyl methacrylate, 2-hydroxy Ethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxy Hydroxybutyl acrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, allyl Relate, allyl methacrylate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl Methacrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxydiethylene glycol acrylate, methoxydiethylene glycol methacrylate, methoxytriethylene glycol acrylate, methoxytriethylene glycol meth Methacrylate, methoxy propylene glycol acrylate, methoxy propylene glycol methacrylate, methoxy dipropylene glycol acrylate, methoxy dipropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, dicyclopenta Dienyl acrylate, dicyclopentadiethyl methacrylate, 2-hydroxy-3-phenoxy Unsaturated carboxylic acid esters such as propyl acrylate, 2-hydroxy-3-phenoxypropyl methacrylate, glycerol monoacrylate, and glycerol monomethacrylate; 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 2-dimethyl Unsaturated carboxyl such as aminopropyl acrylate, 2-dimethylaminopropyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethylaminopropyl acrylate and 3-dimethylaminopropyl methacrylate Acid aminoalkyl esters; Unsaturated carboxylic acid glycidyl esters such as glycidyl acrylate and glycidyl methacrylate; Carboxylic acid vinyl esters such as vinyl acetate, vinyl propionate, vinyl butyrate and vinyl benzoate; Unsaturated ethers such as vinyl methyl ether, vinyl ethyl ether and allyl glycidyl ether; Vinyl cyanide compounds such as acrylonitrile, methacrylonitrile, α-chloroacrylonitrile and vinylidene cyanide; Unsaturated amides such as acrylamide, methacrylamide, α-chloroacrylamide, N-2-hydroxyethylacrylamide and N-2-hydroxyethyl methacrylamide; Maleimide, N-phenylmaleimide. Unsaturated imides such as N-cyclohexylmaleimide; Aliphatic conjugated dienes such as 1,3-butadiene, isoprene and chloroprene; And monoacryloyl or monomethacryloyl groups at the terminal of the polymer molecular chain of polystyrene, polymethylacrylate, polymethylmethacrylate, poly-n-butylacrylate, poly-n-butylmethacrylate, polysiloxane. The macromonomer which has, etc. are mentioned. These monomers can be used individually or in mixture of 2 or more types, respectively.
When the alkali-soluble binder resin is a copolymer of a carboxyl group-containing monomer and another monomer copolymerizable with the monomer, the content ratio of the structural units derived from the carboxyl group-containing monomer is based on the total weight of the structural units constituting the copolymer. It is 10 to 50 weight%, Preferably it is 15 to 40 weight%, More preferably, it is 25 to 40 weight%. When the content of the structural unit derived from the carboxyl group-containing monomer is 10 to 50% by weight, solubility in a developing solution is good, and a pattern at development is preferably formed.
As said alkali-soluble binder resin, a (meth) acrylic acid / methyl (meth) acrylate copolymer, a (meth) acrylic acid / benzyl (meth) acrylate copolymer, (meth) acrylic acid / 2-hydroxyethyl (meth), for example ) Acrylic / benzyl (meth) acrylate copolymer, (meth) acrylic acid / methyl (meth) acrylate / polystyrene macromonomer copolymer, (meth) acrylic acid / methyl (meth) acrylate / polymethyl (meth) acrylate Macromonomer copolymer, (meth) acrylic acid / benzyl (meth) acrylate / polystyrene macromonomer copolymer, (meth) acrylic acid / benzyl (meth) acrylate / polymethyl (meth) acrylate macromonomer copolymer, (meth) Acrylic acid / 2-hydroxyethyl (meth) acrylate / benzyl (meth) acrylate / polystyrene macromonomer copolymer, (meth) acrylic acid / 2-hydroxyethyl (meth) acrylate / benzyl (meth) Acrylate / polymethyl (meth) acrylate macromonomer copolymer, (meth) acrylic acid / styrene / benzyl (meth) acrylate / N-phenylmaleimide copolymer, (meth) acrylic acid / mono succinate mono (2-acryloyl jade / Styrene / benzyl (meth) acrylate / N-phenylmaleimide copolymer, (meth) acrylic acid / mono (2-acryloyloxyethyl) / styrene / allyl (meth) acrylate / N-phenylmaleic acid Mid copolymer, (meth) acrylic acid / benzyl (meth) acrylate / N-phenylmaleimide / styrene / glycerol mono (meth) acrylate copolymer, etc. are mentioned.
Among these, (meth) acrylic acid / benzyl (meth) acrylate copolymer, (meth) acrylic acid / benzyl (meth) acrylate / styrene copolymer, (meth) acrylic acid / methyl (meth) acrylate copolymer, (meth) acrylic acid / Methyl (meth) acrylate / styrene copolymer can be preferably used.
The alkali-soluble binder resin is not particularly limited, but the weight average molecular weight in terms of polystyrene thereof is preferably in the range of 3,000 to 100,000, more preferably in the range of 3,000 to 50,000, particularly 5,000 to 50,000. If the weight average molecular weight of alkali-soluble binder resin exists in the range of 3,000-100,000, since coloring agent dispersion | distribution is easy, a viscosity is low, and it is excellent in storage stability, it is preferable.
The alkali-soluble binder resin (B) may be included in 3 to 80% by weight, preferably 5 to 70% by weight based on the total weight of the photosensitive resin composition solid for forming the front light shielding layer of the display device. When the binder resin is included in the above range, it is preferable because dispersion of the colorant is easy and excellent in storage stability.
Photopolymerizable Compound (C)
The said photopolymerizable compound (C) is a compound which can superpose | polymerize by the action | action of light and the photoinitiator mentioned later, A monofunctional monomer, a bifunctional monomer, another polyfunctional monomer, etc. are mentioned.
The photopolymerizable compound (C) used in the present invention includes two or more of different functional groups or functional groups in order to improve developability, sensitivity, adhesion, and surface problems of the photosensitive resin composition for forming the front light shielding layer of the display device. The photopolymerizable compound may be mixed and used, and the type thereof is not particularly limited as long as it is generally used in this field.
Specific examples of the monofunctional monomers include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate and N-vinylpyrroli Money, etc.
Specific examples of the bifunctional monomer include 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, Bis (acryloyloxyethyl) ether of bisphenol A, 3-methylpentanediol di (meth) acrylate, etc. are mentioned.
Specific examples of other polyfunctional monomers include trimethylolpropane tri (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, propoxylated trimethylolpropane tri (meth) acrylate and pentaeryte. Lithitol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (meth) acrylate, propoxylated dipenta Erythritol hexa (meth) acrylate, dipentaerythritol hexa (meth) acrylate, etc. are mentioned.
Of these, bifunctional or higher polyfunctional monomers are preferably used.
The photopolymerizable compound (C) may be included in an amount of 1 to 60% by weight, preferably 5 to 50% by weight, based on the total weight of the photosensitive resin composition solid for forming the front light shielding layer of the display device. When a photopolymerizable compound (C) is contained in said range, the intensity | strength and smoothness of a pixel part will become favorable.
Photopolymerization Initiator (D)
The photopolymerization initiator (D) may be used one or more selected from the group consisting of triazine compounds, acetophenone compounds, biimidazole compounds, and oxime compounds.
Specific examples of the triazine-based compound include 2,4-bis (trichloromethyl) -6- (4-methoxyphenyl) -1,3,5-triazine and 2,4-bis (trichloromethyl) -6 -(4-methoxynaphthyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6-piperonyl-1,3,5-triazine, 2,4-bis (Trichloromethyl) -6- (4-methoxystyryl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- [2- (5-methylfuran-2- Yl) ethenyl] -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- [2- (furan-2-yl) ethenyl] -1,3,5-triazine , 2,4-bis (trichloromethyl) -6- [2- (4-diethylamino-2-methylphenyl) ethenyl] -1,3,5-triazine, 2,4-bis (trichloromethyl ) -6- [2- (3,4-dimethoxyphenyl) ethenyl] -1,3,5-triazine and the like.
Specific examples of the acetophenone compounds include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethyl ketal, 2-hydroxy-1- [4- (2-hydroxy Hydroxyethoxy) phenyl] -2-methylpropan-1-one, 1-hydroxycyclohexylphenyl ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butan-1-one, 2-hydroxy-2-methyl-1- [4- (1-methylvinyl) phenyl] propane-1 -One, 2- (4-methylbenzyl) -2- (dimethylamino) -1- (4-morpholinophenyl) butan-1-one, and the like.
Specific examples of the biimidazole compound include 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole and 2,2'-bis (2,3-dichloro Phenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2-chlorophenyl) -4,4', 5,5'-tetra (alkoxyphenyl) biimidazole , 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetra (trialkoxyphenyl) biimidazole, 2,2-bis (2,6-dichlorophenyl) -4, The imidazole compound etc. which the phenyl group of a 4'5,5'- tetraphenyl- 1,2'- biimidazole or a 4,4 ', 5,5' position are substituted by the carboalkoxy group are mentioned. Among them, 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2,3-dichlorophenyl) -4,4' , 5,5'-tetraphenylbiimidazole, 2,2-bis (2,6-dichlorophenyl) -4,4 ', 5,5'-tetraphenyl-1,2'-biimidazole are preferred Used.
Specific examples of the oxime compound include o-ethoxycarbonyl-α-oxyimino-1-phenylpropan-1-one, and OXE01 and OXE02 of BASF Corporation are typical examples of commercially available products.
Moreover, as long as it does not impair the effect of this invention, the other photoinitiator etc. which are normally used in this field can also be used together. In addition, the photopolymerization initiator may be used in combination with a photopolymerization initiation aid generally used in this field.
Specifically, an amine compound and a carboxylic acid compound can be illustrated. Specific examples of the amine compound include aliphatic amine compounds such as triethanolamine, methyldiethanolamine and triisopropanolamine; 4-dimethylaminobenzoic acid methyl, 4-dimethylaminobenzoic acid ethyl, 4-dimethylaminobenzoic acid isoamyl, 4-dimethylaminobenzoic acid 2-ethylhexyl, benzoic acid 2-dimethylaminoethyl, N, N-dimethylparatoluidine, 4,4 Aromatic amine compounds, such as' -bis (dimethylamino) benzophenone (common name: Michler's ketone) and 4,4'-bis (diethylamino) benzophenone, are mentioned. Preferably the amine compound may be an aromatic amine compound.
Specific examples of the carboxylic acid compound include phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxyphenylthioacetic acid, chlorophenylthioacetic acid, And aromatic heteroacetic acids such as dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine, and naphthoxyacetic acid.
The photopolymerization initiator (D) is preferably contained in 1 to 40% by weight, preferably 3 to 20% by weight based on the total weight of the photosensitive resin composition solid for forming the front light shielding layer of the display device. When the photopolymerization initiator (D) is included in the content range, the exposure time may be shortened and productivity may be improved by increasing the sensitivity.
Solvent (E)
The solvent is not particularly limited. Preferably ethers, aromatic hydrocarbons, ketones, alcohols, esters or amides can be used.
Specifically, the solvent is ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, di Ethers such as ethylene glycol dibutyl ether; Aromatic hydrocarbons such as benzene, toluene, xylene and mesitylene; Ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone and cyclohexanone; Alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol and glycerin; Ethyl 3-ethoxypropionate, methyl 3-methoxypropionate, methyl cellosolve acetate, ethyl cellosolve acetate, ethyl acetate, butyl acetate, amyl acetate, methyl lactate, ethyl lactate, butyl lactate, 3-meth Methoxybutyl acetate, 3-methyl-3-methoxy-1-butyl acetate, methoxypentyl acetate, ethylene glycol monoacetate, ethylene glycol diacetate, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, diethylene glycol Monoacetate, diethylene glycol diacetate, diethylene glycol monobutyl ether acetate, propylene glycol monoacetate, propylene glycol diacetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, ethylene carbonate, propylene carbonate or γ-buty Rockactone, etc. And esters thereof. In view of the applicability and dryness in the solvents exemplified above, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, ethyl lactate, butalactate, 3-ethoxypropionate, Methyl 3-methoxypropionate etc. are mentioned. The solvents exemplified above may be used alone or in combination of two or more.
The solvent (E) may be included in an amount of 30 to 90% by weight, preferably 30 to 60% by weight, based on the total weight of the photosensitive resin composition for forming the front light shielding layer of the display device. If the solvent (E) is included in the above range, the coating property is improved when applied with a coating device such as a roll coater, spin coater, slit and spin coater, slit coater (sometimes referred to as die coater), inkjet, etc. desirable.
Additive (F)
Filler, other high molecular compound, hardening | curing agent, pigment dispersant as needed for the photosensitive resin composition for front shading layer formation of the display apparatus of this invention. Additives (F) such as adhesion promoters, antioxidants, ultraviolet absorbers, and anti-agglomerates may be further included.
Specific examples of the filler include glass, silica, alumina and the like.
As another high molecular compound, Curable resin, such as an epoxy resin and a maleimide resin, specifically; And thermoplastic resins such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether, polyfluoroalkyl acrylate, polyester, and polyurethane.
The curing agent is used to increase the core hardening and mechanical strength, epoxy compound, polyfunctional isocyanate compound, melamine compound, oxetane compound and the like can be used.
Examples of the epoxy compound include bisphenol A epoxy resins, hydrogenated bisphenol A epoxy resins, bisphenol F epoxy resins, hydrogenated bisphenol F epoxy resins, noblock type epoxy resins, other aromatic epoxy resins, and cycloaliphatic epoxy resins. Resins, glycidyl ester resins, glycidylamine resins, or brominated derivatives of these epoxy resins, aliphatic, cycloaliphatic or aromatic epoxy compounds other than epoxy resins and brominated derivatives thereof, butadiene (co) polymer epoxides, isoprene (Co) polymer epoxide, glycidyl (meth) acrylate (co) polymer, triglycidyl isocyanurate, etc. are mentioned.
As said oxetane compound, carbonate bis oxetane, xylene bis oxetane, adipate bis oxetane, a terephthalate bis oxetane, a cyclohexane dicarboxylic acid bis oxetane, etc. are mentioned, for example.
The curing agent may include a curing auxiliary compound capable of ring-opening polymerization of the epoxy group of the epoxy compound and the oxetane skeleton of the oxetane compound together with the curing agent. As a hardening auxiliary compound, polyhydric carboxylic acid, polyhydric carboxylic anhydride, an acid generator, etc. are mentioned, for example.
As said carboxylic anhydride, what is marketed can be used as an epoxy resin hardening | curing agent. As said epoxy resin hardening | curing agent, a brand name (Adekahadona EH-700) (made by Adeka Industrial Co., Ltd.), a brand name (Rikaditdo HH) (made by Nippon Ewha Co., Ltd.), a brand name (MH-700), for example (Manufactured by Nippon Ewha Co., Ltd.). The said hardening | curing agent can be used individually or in mixture of 2 or more types.
The pigment dispersant is added to maintain the stability and deagglomeration of the white pigment as a colorant.
The dispersant may preferably contain an acrylate-based dispersant comprising BMA (butyl methacrylate) or DMAEMA (N, N-dimethylaminoethyl methacrylate). In this case, it is preferable to apply the acrylic dispersant prepared by a living control method as shown in Korean Patent Laid-Open Publication No. 2004-0014311. As a commercial product of the acrylic dispersant manufactured by the living control method, DISPER BYK-2000, DISPER BYK-2001, DISPER BYK-2070, DISPER BYK-2150, etc. are mentioned. The dispersant is also a pigment dispersant of known resin types, in particular polycarboxylic acid esters represented by polyurethanes, polyacrylates, unsaturated polyamides, polycarboxylic acids, (partial) amine salts of polycarboxylic acids, polycarboxes Ammonium salts of acids, alkylamine salts of polycarboxylic acids, polysiloxanes, long chain polyaminoamide phosphate salts, esters of hydroxyl group-containing polycarboxylic acids and modified products thereof, or polys with free carboxyl groups Oily dispersants such as amides or salts thereof formed by the reaction of esters with poly (lower alkyleneimines); Water-soluble resins or water-soluble polymer compounds such as (meth) acrylic acid-styrene copolymers, (meth) acrylic acid- (meth) acrylate ester copolymers, styrene-maleic acid copolymers, polyvinyl alcohol or polyvinyl pyrrolidone; Polyester; Modified polyacrylates; Adducts of ethylene oxide / propylene oxide and phosphate esters.
As a commercial item of the above-mentioned resin type pigment dispersant, As a cationic resin dispersant, For example, brand names of BYK (BIC) Chemi Corporation: DISPER BYK-160, DISPER BYK-161, DISPER BYK-162, DISPER BYK-163, DISPER BYK-164, DISPER BYK-166, DISPER BYK-171, DISPER BYK-180, DISPER BYK-182, DISPER BYK-184; BASF brand name: EFKA-44, EFKA-46, EFKA-47, EFKA-48, EFKA-4010, EFKA-4050, EFKA-4055, EFKA-4020, EFKA-4015, EFKA-4060, EFKA-4300, EFKA- 4330, EFKA-4400, EFKA-4406, EFKA-4510, EFKA-4800; Trade names: SOLSPERS-24000, SOLSPERS-32550, NBZ-4204 / 10; Kawaken Fine Chemical's trade names: HINOACT T-6000, Hinoact T-7000, Hinoact T-8000; Trade names of Ajinomoto Co., Ltd .: AJISPUR PB-821, Ajisper PB-822, Ajisper PB-823; The brand names of Kyoeisha Chemical Co., Ltd .: FLORENE DOPA-17HF, Floren DOPA-15BHF, Floren DOPA-33, Floren DOPA-44, etc. are mentioned.
The dispersant is preferably included in an amount of 1 to 20% by mass, and more preferably in an amount of 2 to 10% by weight, based on the total weight of solids in the colorant dispersion composition. When the dispersant is contained in the above content, it is preferable because the dispersibility of the white pigment as a colorant is particularly excellent.
Examples of the adhesion promoter include vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, and N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane. , N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-mercapto Propyl trimethoxysilane, 3-isocyanate propyl trimethoxysilane, 3-isocyanate propyl triethoxysilane, etc. are mentioned.
These adhesion promoters can be used individually or in combination of 2 or more types, respectively, Usually, 0.01-10 weight%, Preferably it is 0.05-2 weight% with respect to solid content of the photosensitive resin composition for forming the front light shielding layer of a display apparatus. It may include.
Specific examples of the antioxidant include 2,2'-thiobis (4-methyl-6-t-butylphenol), 2,6-di-t-butyl-4-methylphenol, and the like.
Specific examples of the ultraviolet absorber include 2- (3-tert-butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzothiazole, alkoxybenzophenone and the like.
Examples of the aggregation inhibitor include sodium polyacrylate.
The present invention also provides
A display device including a front light shielding layer formed by applying a photosensitive resin composition for forming a front light shielding layer of the display device on a transparent substrate.
The front light blocking layer may be formed by a method known in the art, such as photolithography and inkjet.
For example, in the photolithography method, the photosensitive resin composition for forming a front light shielding layer of the display device is applied on a tempered glass substrate or a transparent film, and volatile components such as solvents are removed to form a light shielding layer, and a photomask The light shielding layer may be exposed to and then developed in a manner of developing.
Hereinafter, the present invention will be described in more detail with reference to Examples. However, the following examples are intended to illustrate the present invention more specifically, but the scope of the present invention is not limited by the following examples. The following examples can be appropriately modified and changed by those skilled in the art within the scope of the present invention.
Production Example 1: Preparation of Colorant Dispersion Composition
CI pigment white 6, 35.0 g of a colorant with an average particle size of 200 nm and a Z value of 45 (W: 86.4, X: 83.0, Y: 77.22), a binder resin (methacrylate as a copolymer of methacrylic acid and benzyl methacrylate) The ratio between the acid unit and the benzyl methacrylate unit is 31:69 in terms of molar ratio, 4.94 g of polystyrene equivalent weight average molecular weight is 4.94 g, 4.32 g of BYK-180 (manufactured by BYK) as a dispersant, and propylene glycol monomethyl ether acetate as a solvent. 55.74 g were mixed and dispersed for 2 hours with a bead mill to prepare a colorant dispersion composition.
Production Example 2: Preparation of Colorant Dispersion Composition
CI pigment white 6 was prepared in the same manner as in Preparation Example 1, except that a colorant having an average particle size of 200 nm and a Z value of 70 (W: 87.91, X: 83.08, Y: 76.25) was used. It was.
Production Example 3: Preparation of Colorant Dispersion Composition
CI pigment white 6 was prepared in the same manner as in Preparation Example 1, except that a colorant having an average particle size of 250 nm and a Z value of 100 (W: 89.19, X: 83.11, Y: 75.17) was used. It was.
Example 1: front of the display device Shading layer Photosensitive resin composition for formation
50.2 g of the colorant dispersion composition prepared in Preparation Example 1, a copolymer of methacrylic acid and benzyl methacrylate (the ratio of the methacrylic acid unit and the benzyl methacrylate unit is 31:69, polystyrene equivalent weight average molecular weight in molar ratio) Silver 20,000) 29.5 g, dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.) 11.1 g, 2-methyl- (4-methylthiophenyl) -2-morpholino-1-propane-1- 2.2 g of on (Irgacure 907-; manufactured by BASF), 1.1 g of 2,4-diethyl thioxanthone (Speedcure DETX; manufactured by LAMBSON), 3-methacryloxypropyltrimethoxysilane (KBM-503; manufactured by Shin-Etsu) 0.4g and 5.5g of propylene glycol monomethyl ether acetate were mixed to prepare a photosensitive resin composition for forming a front light shielding layer of a display device.
Example 2: front of the display device Shading layer Photosensitive resin composition for formation
Except for using the colorant dispersion composition prepared in Preparation Example 2 was carried out in the same manner as in Example 1 to prepare a photosensitive resin composition for forming the front light shielding layer of the display device.
Example 3: front of the display device Shading layer Photosensitive resin composition for formation
Except for using the colorant dispersion composition prepared in Preparation Example 3 was carried out in the same manner as in Example 1 to prepare a photosensitive resin composition for forming the front light shielding layer of the display device.
Comparative example 1: front of the display device Shading layer Photosensitive resin composition for formation
A photosensitive resin composition for forming a front light shielding layer of a display device was prepared in the same manner as in Example 1 except that a colorant having an average particle size of 200 nm and a Z value of 150 was used as CI pigment white 6.
Comparative example 2: front of the display device Shading layer Photosensitive resin composition for formation
A photosensitive resin composition for forming a front light shielding layer of a display device was prepared in the same manner as in Example 1 except that a colorant having an average particle size of 400 nm and a Z value of 10 was used as CI pigment white 6.
Example 4: Display Front of the device Shading layer formation
The front light shielding layer was formed using the photosensitive resin composition for forming the front light shielding layer of the display device manufactured in Examples 1 to 3 and Comparative Examples 1 to 2. That is, the photosensitive resin composition for forming the front light shielding layer of the display apparatus of Examples 1 to 3 and Comparative Examples 1 to 2 was applied on a glass substrate by spin coating, and then placed on a heating plate and maintained at a temperature of 100 ° C. for 3 minutes. A thin film was formed. Subsequently, a photomask having a line pattern of 3 μm to 100 μm was placed on the thin film and irradiated with ultraviolet rays. At this time, the ultraviolet light source was irradiated with luminous intensity of 100mJ / cm 2 using a 1KW high-pressure mercury lamp containing all g, h and i lines. The UV-irradiated thin film was developed by immersing in a KOH aqueous solution developing solution of pH 10.5 for 20 seconds. The thin film coated glass plate was washed with distilled water, dried using nitrogen gas, and heated in a heating oven at 150 ° C. for 20 minutes to form a front light shielding layer. The thickness of the front light shielding layer prepared above was 25.0 μm.
Experimental Example 1: of reflector Pattern Confirm
In Example 4, the development speed in the process of forming the front light shielding layer was measured, and the patternability was confirmed as shown below, and the results are shown in Table 1 below.
* Patternability: Based on 200um thick square pattern
(Double-circle): The boundary surface of a pattern is straight, and has a square form.
(Circle): A tearing phenomenon generate | occur | produces in the interface of a pattern, but it is not straight, but has a substantially rectangular shape.
(Triangle | delta): A tearing phenomenon generate | occur | produces in the interface of a pattern, it does not go straight and does not have a square shape.
X: The form of a pattern does not remain and a form of a pattern cannot be confirmed.
Experimental Example 2: heat resistance evaluation
The heat resistance was evaluated by coating the photosensitive resin composition for forming the front light shielding layer of the display device manufactured in Examples 1 to 3 and Comparative Examples 1 and 2 to form a coating film, and baking the same at an oven of 230 degrees for 30 minutes to produce SPECTROPHOTOMETER CM- The 3700d was used to measure and evaluate the YI-D1925 value, and the results are shown in Table 1 below.
As shown in Table 1, the front light shielding layer of the display device formed of the photosensitive resin composition for forming the front light shielding layer of the display device of the present invention is excellent in patternability and heat resistance as compared with the light shielding layers prepared in Comparative Examples 1 to 2 It was confirmed. From the above experimental results, it can be seen that the photosensitive resin composition for forming the front light shielding layer of the display device of the present invention has excellent heat resistance, and thus yellowing after a high temperature process can be prevented.
Claims (10)
The white pigment has a Z value of 40 to 150 calculated by the following equation,
The white pigment is TiO 2 , and the TiO 2 is surface-treated sequentially with SiO 2 , Al 2 O 3, and ZrO 2 , wherein the photosensitive resin composition for forming a front light shielding layer of a display device having excellent heat resistance. :
[Equation]
Z = ((XW) 2 ) + ((XY) 2 )
Where
W is a reflectance value at 430 nm, X is a reflectance value at 550 nm, and Y is a reflectance value at 670 nm.
In the above formula, W, X and Y are W ≥ X ≥ Y, the photosensitive resin composition for forming a front light shielding layer of a display device.
The average particle size of the white pigment is 150nm ~ 300nm Photosensitive resin composition for forming a front light shielding layer of the display device.
10 to 90% by weight of the colorant (A), 3 to 80% by weight of the alkali-soluble binder resin (B) and 1 to 60% by weight of the photopolymerizable compound based on the total weight of the solid content of the photosensitive resin composition for forming the front light shielding layer of the display device (C) and 1 to 40 wt% photopolymerization initiator (D); A photosensitive resin composition for forming a front shielding layer of a display device, comprising: 30 to 90% by weight of a solvent (E) based on the total weight of the front blocking layer of a display device.
It is white, The photosensitive resin composition for front shading layer formation of the display apparatus.
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