Colored photosensitive resin composition, color filter and display device

A photosensitive resin and composition technology, applied in the field of color filters and display devices, and colored photosensitive resin compositions, can solve the problems of insoluble, incapable of making high-contrast color filters, etc., and achieve excellent stability over time Effect

Active Publication Date: 2013-05-22
TOKYO OHKA KOGYO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of a colored photosensitive resin composition containing an organic pigment and a pigment dispersant, the pigment dispersant is hardly soluble in ester-based or ketone-based solvents, and the particle size of the pigment cannot be reduced to fine particles. There is a problem that a color filter with high contrast cannot be produced in the case of a photosensitive resin composition

Method used

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  • Colored photosensitive resin composition, color filter and display device
  • Colored photosensitive resin composition, color filter and display device
  • Colored photosensitive resin composition, color filter and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] After mixing each of the following components and stirring the mixture for 1 hour, it filtered through a 5 μm membrane filter to prepare a colored photosensitive resin composition.

[0079] · Alkali soluble resin

[0080] Resin A (solid content 55%, solvent: 3-methoxybutyl acetate)

[0081] …60 parts by mass

[0082] ·Photopolymerizable monomer

[0083] Dipentaerythritol hexaacrylate (manufactured by Nippon Kayaku Co., Ltd.)...25 parts by mass

[0084] ·Photopolymerization Initiator

[0085] 1-[9-Ethyl-6-(2-methylbenzoyl)-9H-carbazol-3-yl]-ethanone-1-(O-acetyloxime) "IRGACURE OXE-02" (trade name : Made by BASF Corporation)

[0086] …15 parts by mass

[0087] ·Inorganic pigments

[0088] Carbon dispersion liquid "CF BLACK" (trade name: manufactured by Mikuni Color Co., Ltd., solid content 25% Solvent: 3-methoxybutyl acetate ... 400 parts by mass

[0089] ·Solvent

[0090] 3-methoxybutyl acetate / 1,1,3,3-tetramethylurea / propylene glycol monomethyl acetate=55 / 10 / 35...

Embodiment 2～10 and comparative example 1～9

[0098] Except having changed the mixing ratio (mass ratio) of a solvent as shown in Table 1, it carried out similarly to Example 1, and prepared the colored photosensitive resin composition.

[0099] [Table 1]

[0100]

[0101] MBA: 3-methoxybutyl acetate

[0102] PGME A: Propylene Glycol Monomethyl Ether Acetate

[0103] EL: ethyl lactate

[0104] Ethyl Cellosolve: Ethylene Glycol Monoethyl Ether

[0105] AN: Cyclohexanone

[0106] γ-BL: γ-butyrolactone

[0107] δ-VL: δ-valerolactone

[0108] ε-CL: ε-caprolactone

[0109] TMU: 1,1,3,3-Tetramethylurea

[0110] DMF: Dimethylformamide

[0111] DMAC: Dimethylacetamide

[0112] DMI: 1,3-Dimethyl-2-imidazolinone

[0113]

[0114] [Evaluation of Viscosity Stability]

[0115] About the colored photosensitive resin composition of Examples 1-10 and Comparative Examples 1-9, the viscosity was measured using the E-type viscometer at the initial stage of preparation and after storage at 25 degreeC for 7 days, and the visco...

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Abstract

The invention provides a colored photosensitive resin composition with excellent aging stability of viscosity and patterning characteristics, a color filter formed by using the colored photosensitive resin composition and a display device with the filter. The colored photosensitive resin composition provided by the invention comprises alkali-soluble resin, a photopolymerizable monomer, a photopolymerization initiator, an inorganic pigment and a solvent, wherein the solvent comprises an amide structure, and the solvent prefers substances represented by the following formula, with R1, R2 and R3 independently representing hydrogen atom or an alkyl, n representing an integer of 1 to 3.

Description

technical field [0001] The present invention relates to a colored photosensitive resin composition, a color filter, and a display device. Background technique [0002] In general, color filters are fabricated using photolithography. In this photolithography method, first, a black colored photosensitive resin composition is applied on a substrate, and then exposed and developed to form a black matrix. Next, coating, drying, exposure, and development were repeated for each colored photosensitive resin composition of red, green, and blue to form pixel regions of each color at predetermined positions to manufacture a color filter. [0003] A colored photosensitive resin composition used in a color filter is generally prepared by first dispersing a pigment and a pigment dispersant in a solvent to prepare a pigment dispersion, and then adding a resin or the like to the pigment dispersion. other constituents, and prepared by mixing. [0004] As the solvent, a solvent with high s...

Claims

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Application Information

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IPC IPC(8): G03F7/004G03F7/027G02B5/20G02F1/1335
CPCG02B5/201G02F1/1303G03F7/0045G03F7/028
Inventor 山口尚人盐田大
Owner TOKYO OHKA KOGYO CO LTD
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