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Coloring 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: 2014-09-17
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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  • Coloring photosensitive resin composition
  • Coloring photosensitive resin composition
  • Coloring photosensitive resin composition

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preparation example Construction

[0140]

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

[0142]

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

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

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

Embodiment 1

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

Embodiment 2

[0157]Pigment as a colorant, that is, 3.45 parts by weight of C.I. Pigment Green 58 and 1.51 parts by weight of C.I. Pigment Yellow 138, 2.72 parts by weight of a copolymer of methacrylic acid and benzyl methacrylate as an alkali-soluble resin (methacrylic acid unit The molar ratio of the benzyl methacrylate unit to the methyl (meth)acrylate unit is 32:50:18; the acid value is 100 mgKOH / g; the 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 a compound represented by Chemical Formula 1 as a photopolymerization initiator, and 0.09 parts by weight of 2 as a photopolymerization initiation auxiliary agent. , 4-diethylthioxanthone, 0.03 parts by weight of 4,4'-butylene bis(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...

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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 imaging elements, liquid crystal display devices, and the like, and their range of applications is rapidly expanding. Color filters used in color liquid crystal display devices or imaging elements are usually manufactured in the following manner: by spin coating, on a substrate with a black matrix pattern, uniform coatings containing red, green and blue coloring photosensitive resin composition of colorants of various colors, and then heat-dry (hereinafter, sometimes referred to as "pre-plastic"), and the formed coating film is exposed, developed, and heat-cured if necessary. (Hereinafter, it may be referred to as "post-plasticity"). The above operation is repeated for each color to form pixels of each color, thereby producing a color filter. [0003] Conventionally, dyeing methods, electrodeposition methods, ink...

Claims

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Application Information

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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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