Coloring composition for forming red pixel, color filter and color liquid crystal display element

A coloring composition and pixel technology, which is applied to photosensitive materials, instruments, optical filters, etc. used in optomechanical equipment, can solve the problems of not being good enough, red reproduction domain reproduction difficulties, etc., and achieve the effect of excellent solvent resistance

Inactive Publication Date: 2009-12-09
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this combination of pigments, it is not good enough to obtain red pixels with high contrast, and there are also cases where the reproduction of the red reproduction range of the above-mentioned CRT standard itself is difficult

Method used

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  • Coloring composition for forming red pixel, color filter and color liquid crystal display element
  • Coloring composition for forming red pixel, color filter and color liquid crystal display element
  • Coloring composition for forming red pixel, color filter and color liquid crystal display element

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0169] Add 0.5 parts by mass of 2,2'-azobisisobutyronitrile and 200 parts by mass of propylene glycol monomethyl ether acetate into a flask equipped with a condenser tube and a stirrer, and continue to add 15 parts by mass of methacrylic acid, N-benzene 20 parts by mass of maleimide, 55 parts by mass of benzyl methacrylate, 10 parts by mass of styrene, and pentaerythritol tetrakis(3-mercaptopropionate) as a molecular weight regulator (manufactured by Sakai Chemical Industry Co., Ltd., Product name: PEMPII-20P) 2 parts by mass, ventilated with nitrogen. Thereafter, the reaction solution was stirred slowly to raise the temperature of the reaction solution to 80° C., and kept at this temperature for 5 hours to perform polymerization to obtain a resin solution (solid content concentration=33.3% by mass). Mw=25000 and Mn=12000 of the obtained resin. This resin solution was referred to as "resin solution (B-1)".

Embodiment 1

[0171] 100 parts by mass of pigment dispersion liquid (M-1) as (A) colorant, 10 parts by mass (in terms of solid content) of resin solution (B-1) as (B) alkali-soluble resin, 15 parts by mass of dipentaerythritol hexaacrylate as a functional monomer, (D) 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)butane-1 as a photopolymerization initiator - 4 parts by mass of ketone, 1 part by mass of 4,4'-bis(diethylamino)benzophenone, and propylene glycol monomethyl ether acetate as a solvent are mixed to prepare a liquid combination with a solid content concentration of 25%. substance (R-1).

[0172] Regarding the liquid composition (R-1), a substrate for evaluation was produced and evaluated in the following procedure. The evaluation results are listed in Table 3.

[0173] Production of the substrate

[0174] Using a spin coater, the liquid composition (R-1) was applied to 3 pieces with the rotation speed as a variable to form SiO on the surface to prevent the dissolution of sodi...

Embodiment 2～27 and comparative example 1～11

[0185] In Example 1, liquid compositions (R-2) to (R-38) were prepared in the same manner as in Example 1 except that the pigment dispersion liquid was replaced with those shown in Table 3 and Table 4.

[0186] Then, it evaluated similarly to Example 1 except having replaced liquid composition (R-1) with liquid compositions (R-2)-(R-38), respectively. The evaluation results are listed in Table 3 and Table 4. In addition, in the evaluation of the solvent resistance in Example 16, it was identified that a film remained on the unexposed portion of the substrate.

[0187]

[0188]

[0189] In Table 3 and Table 4, "B / C (parts by mass)" means content (parts by mass) of (B) alkali-soluble resin and (C) polyfunctional monomer.

[0190] It can be seen from Tables 1 to 4 that if Pigment Red 177 and C.I. Pigment Red 242 or C.I. Pigment Orange 38 are used as colorants, a dark hue close to that of a CRT can be reproduced and high contrast can be obtained.

[0191] In contrast, it c...

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PUM

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Abstract

The invention relates to a coloring composition for forming red pixel, color filter and color liquid crystal display element. A coloring composition is provided, and is capable of representing deep color phase close to CRT and forming red pixel having high contrast degree. The coloring composition for forming red pixel is a coloring composition for forming red pixel containing (A) coloring agent, (B) adhesive resin and (C) multifunctional monomer; the (A) coloring agent contains C. I. pigment red 177 and at least one selected from C. I. pigment red 242 and C. I. pigment orange 38; the CIE chromaticity coordinates determined under second degree viewing field through C light source are in the range that x is larger than or equal to 0.61 and less than or equal to 0.67 and y is larger than or equal to 0.31 and less than or equal to 0.35.

Description

technical field [0001] The present invention relates to a coloring composition for forming a red pixel, a color filter and a color liquid crystal display device, and more specifically, to a coloring composition for use in the manufacture of a red pixel used in a transmissive or reflective color liquid crystal device, a color pickup tube element, etc. A coloring composition, a color filter having pixels formed from the coloring composition, and a color liquid crystal display element having the color filter. Background technique [0002] With the spread of digital cameras and high-definition televisions, liquid crystal display elements with color filters need to expand the color reproduction range in order to be able to display the deep blue and bright red sunsets like the winter sea. Usually, the color reproduction range of the liquid crystal display element is set based on the CRT, and strives to be close to it. As the standard color reproduction domain of CRT, for example,...

Claims

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Application Information

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IPC IPC(8): G03F7/004G02B5/20G02F1/1335
Inventor 古贺康行森下聪龙恭一郎
Owner JSR CORPORATIOON
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