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Light-cured colorized composition for color filter

A technology of coloring composition and color filter, which is applied in the direction of photosensitive materials, optics, and optomechanical equipment used in optomechanical equipment, and can solve problems such as uneven thickness, erosion, and white light on displays

Inactive Publication Date: 2012-11-21
张海清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the pixel part becomes insoluble in the developer solution due to the cross-linking reaction, the carboxyl group in it will still react with the alkali, so that the edge of the pixel will still be eroded by the developer solution, resulting in irregular and jagged edges
The end result is that the display has a white light phenomenon, resulting in a decrease in contrast
On the other hand, the developer solution will also erode the front surface of the pixel, making the pixel surface rough and uneven in thickness; thereby affecting the brightness uniformity of the display

Method used

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  • Light-cured colorized composition for color filter
  • Light-cured colorized composition for color filter
  • Light-cured colorized composition for color filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] The photocurable coloring composition can be prepared by mixing and stirring the following components for 2 hours:

[0085] Hydroxyethyl acrylate / glycidyl methacrylate and unsaturated monobasic acid adduct / p-carboxymethylthiostyrene copolymer ------8 parts

[0086] (copolymerization ratio is 25:45:30, weight average molecular weight is 12000)

[0087] Dipentaerythritol hexaacrylate ------8 parts

[0088] IRGACURE 369 ------0.6 parts

[0089] IRGACURE OXE01 ------0.5 parts

[0090] Isopropylthioxanthone ------0.6 parts

[0091] Cyclohexanone ------38 parts

[0092] The following pigment dispersion* ------44 parts

[0093] BYK UV3500 ------0.3 parts

[0094] Pigment Dispersion*

[0095] The following components were ground with a sand mill for 6 hours to obtain a pigment dispersion.

[0096] Pigment red P.R254 ------30 parts

[0097] Styrene / hydroxyethyl acrylate / methacrylic acid copolymer------7 parts

[0098] Solsperse 24000 ------15 parts

[0099] Cyclohexan...

Embodiment 2

[0101] "Hydroxyethyl acrylate / glycidyl methacrylate and unsaturated monobasic acid adduct / p-carboxymethylthio styrene copolymer" in Example 1 is replaced by the following copolymer, and all the other are the same as (Example 1):

[0102] Styrene / glycidyl methacrylate and unsaturated monobasic acid adduct / carboxymethyl allyl sulfide copolymer (copolymerization ratio 30:40:30, weight average molecular weight 12000).

Embodiment 3

[0104] "Styrene / hydroxyethyl acrylate / methacrylic acid copolymer" in the pigment dispersion liquid in embodiment 1 is replaced with following resin, and all the other are the same as embodiment 1:

[0105] Hydroxyethyl acrylate / p-carboxymethylthiostyrene / glycidyl methacrylate and unsaturated monobasic acid adduct (copolymerization ratio 25:45:30, weight average molecular weight 12000).

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Abstract

The invention provides a light-cured colorized composition for manufacturing liquid crystal display color filters. The light-cured colorized composition is characterized in that an alkali-soluble side group contained in alkali-soluble resin is at least one of the following (I), (II), (III), and (IV), wherein R is a non-aromatic group. In addition, at least one hydrogen abstracting photoinitiator is contained. -R-S-CH2-COOH (I).

Description

technical field [0001] The invention relates to a photocurable coloring composition applied to a color filter of a liquid crystal display. In particular, it provides a light-curable coloring composition for color filters with neat edges, small side erosion, and smooth film surface after alkaline water development, which can reduce light leakage, improve contrast and brightness uniformity. Background technique [0002] In recent years, the size of various displays such as TVs, computers, and mobile phones has become larger and larger, and the requirements for clarity, resolution, and contrast of images have also become higher and higher. In order to meet the above requirements, the raw materials and processes used in the manufacture of optical filters must be more refined. [0003] Colored pixels on filters are usually fabricated using photolithography. First, the photocurable coloring composition is uniformly coated on the glass substrate by spin coating (spin) or slit coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/027G03F7/033G03F7/004
Inventor 张海清王晓燕
Owner 张海清
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