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Colored photosensitive resin composition

A technology of photosensitive resin and composition, which is applied in the direction of optics, optical filters, optical elements, etc., and can solve problems such as insufficient resolution, insufficient flatness of patterns, and decrease in brightness

Active Publication Date: 2018-02-09
DONGWOO FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve such a problem, an oxime ester compound is used as a photopolymerization initiator, but if it is desired to use a colored photosensitive resin composition containing an oxime ester photopolymerization initiator to form a pattern, there is a problem that only the surface is cured and the The problem that sufficient straightness (straightness) cannot be obtained in the developed pattern
In addition, in Korean Laid-Open Patent No. 2009-0061268, an excessive amount of initiator is used in order to achieve high sensitivity, but due to the use of excessive amount of initiator, there are problems of insufficient resolution and decreased brightness

Method used

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  • Colored photosensitive resin composition
  • Colored photosensitive resin composition
  • Colored photosensitive resin composition

Examples

Experimental program
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preparation example Construction

[0140]

[0141] As a method for preparing the colored photosensitive resin composition of the present invention, for example, it can be prepared by adding a colorant and a dispersant to a solvent and dispersing it to prepare a colorant dispersion liquid having a uniform particle size, and then The alkali-soluble resin, photopolymerizable compound, photopolymerization initiator, and other additives added as necessary are dissolved in the solvent, and are mixed with the colorant dispersion, and the solvent can be added again as needed.

[0142]

[0143] Moreover, this invention also provides the color filter manufactured from the said colored photosensitive resin composition.

[0144] The color filter includes: a substrate and a color layer provided on the upper part of the substrate.

[0145] The substrate may be the substrate of the color filter itself, or may be a portion where the color filter is located in a display device or the like, and is not particularly limited. ...

Embodiment 1

[0153] Pigments as colorants, namely 3.43 parts by weight of C.I. Pigment Red 254 and 2.81 parts by weight of C.I. Pigment Red 177, and 3.95 parts by weight of a copolymer of methacrylic acid and benzyl methacrylate as an alkali-soluble resin (methacrylic acid unit) The ratio to benzyl methacrylate unit is 20:80 in molar ratio; acid value is 83 mgKOH / g; weight average molecular weight in terms of polystyrene is 13,000), 1.78 parts by weight of dipentaerythritol as a photopolymerizable compound Hexaacrylate (DPHA, Nippon Kayaku), 0.8 parts by weight of the compound represented by Chemical Formula 1 as a photopolymerization initiator, 0.29 parts by weight of 2,4-diethylthioxanthone as a photopolymerization initiation assistant, 0.09 parts by weight of 4,4'-butylenebis(6-tetra-butyl-3-methylphenol) (BBM-S, Sumitomo Chemical Co., Ltd.) as an antioxidant, 84 parts by weight of propylene glycol monomethyl as a solvent Ether acetate, as additives, 2.7 parts by weight of a pigment dis...

Embodiment 2

[0157]The pigments as colorants, namely 3.45 parts by weight of C.I. Pigment Green 58 and 1.51 parts by weight of C.I. Pigment Yellow 138, and 2.72 parts by weight of a copolymer of methacrylic acid and benzyl methacrylate as an alkali-soluble resin (methacrylic acid unit) The ratio of benzyl methacrylate unit and methyl (meth)acrylate unit is 32:50:18 in molar ratio; acid value is 100 mgKOH / g; weight average molecular weight in terms of polystyrene is 15,000), as 6.34 parts by weight of dipentaerythritol hexaacrylate (DPHA, Nippon Kayaku) as a photopolymerizable compound, 0.63 parts by weight of the compound represented by Chemical Formula 1 as a photopolymerization initiator, 0.09 parts by weight of 2 as a photopolymerization initiation assistant , 4-diethylthioxanthone, 0.03 parts by weight of 4,4'-butylenebis(6-tetra-butyl-3-methylphenol) (BBM-S, Sumitomo Chemical Co., Ltd.) as an antioxidant, 84.01 parts by weight of propylene glycol monomethyl ether acetate as a solvent,...

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Abstract

The invention relates to a coloring photosensitive resin composition, which can easily form fine graphics, and is capable of manufacturing patterned high-resolution high-brightness colorful optical filter with a large taper angle. The coloring photosensitive resin composition comprises a coloring agent, an alkaline soluble resin, a photo-polymerization compound, a photo-polymerization initiator, an antioxidant, and a solvent; wherein the photo-polymerization initiator comprises a compound (a) represented by the chemical formula (1), the antioxidant comprises a compound (b) represented by the chemical formula (2), a compound (c) represented by the chemical formula (3), or a mixture of the (b) and (c).

Description

technical field [0001] The present invention relates to a colored photosensitive resin composition. Background technique [0002] Color filters are widely used in image pickup elements, liquid crystal display devices, and the like, and their application range is rapidly expanding. Color filters used in color liquid crystal display devices, image pickup elements, etc. are generally produced by spin coating, on a substrate on which a black matrix pattern is formed, uniformly coating a color filter containing elements corresponding to red, green, and blue. A colored photosensitive resin composition of a colorant of various colors is then heated and dried (hereinafter, sometimes referred to as "pre-plasticization"), and the formed coating film is exposed to light, developed, and then heated and cured if necessary. (Hereinafter, sometimes referred to as "post-plasticity"), the above-described operation is repeated for each color to form pixels of each color, thereby producing a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03F7/027G03F7/004G02B5/20
CPCC08F2/50C09B11/24G02B5/23G03F7/0007G03F7/027G03F7/028G03F7/031G03F7/033
Inventor 李宪熙金奉奎郑宝兰李宗洙
Owner DONGWOO FINE CHEM CO LTD
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