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Light solidifying coloring composition and color filter using the same

A coloring composition and photocurable technology, which is applied in the direction of instruments, optics, and optomechanical equipment, can solve the problems of residual film rate, pixel intensity, pattern shedding or defect, resolution support body adhesion decline, etc., to achieve optical Improved curing efficiency and high cohesion

Inactive Publication Date: 2008-02-13
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the sensitivity of any of the above-mentioned curable compositions is not satisfactory, and it is necessary to irradiate high-energy radiation to cure them.
When such a curable composition is used to form a colored pattern of a color filter, if the amount of radiation exposure is insufficient, problems such as pattern peeling or chipping, residual film rate, or decrease in pixel strength will occur.
In addition, in the coloring pattern of the obtained color filter, the problem of a decrease in resolution and adhesion to the support also arises.
[0010] As described above, a curable coloring composition that can be cured at high sensitivity and has good pattern-forming properties even when a coloring agent is contained in a high concentration, and a curable coloring composition obtained by using it that has resolution and A color filter of a coloring pattern excellent in both adhesion to a support, but the current situation is that such a composition has not been provided

Method used

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  • Light solidifying coloring composition and color filter using the same
  • Light solidifying coloring composition and color filter using the same
  • Light solidifying coloring composition and color filter using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0259] Here, an example in which a photocurable coloring composition α-1 containing a colorant (pigment) is prepared, and the curable composition α-1 is used to produce a color filter for use in a liquid crystal display element will be described.

[0260] [1. Preparation of photocurable coloring composition α-1]

[0261] 1-1. Preparation of pigment dispersion (Q1): black

[0262] As the pigment, 27 parts by mass of carbon black MA-20 [manufactured by Mitsubishi Chemical Corporation, specific black pigment (A)], benzyl methacrylate / methacrylic acid copolymer (copolymerization ratio 70 / 30 molar ratio, weight average molecular weight A mixed liquid consisting of 30000) 8 parts by mass and 65 parts by mass of propylene glycol monomethyl ether acetate was mixed and dispersed by a bead mill for 20 hours to prepare a pigment dispersion (Q1).

[0263] Regarding the obtained pigment dispersion liquid (Q1), the average particle diameter of the pigment was measured according to the dynamic l...

Embodiment 2～12

[0313] At least 1 of the specific initiator (compound 1) in the composition α-1 used to prepare the photocurable coloring composition α-1 in Example 1 and the black pigment used in the pigment dispersion liquid (Q1) All of them were replaced with those shown in Table 1 below, except that the photocurable coloring compositions α-2 to α-12 were prepared in the same manner as in Example 1. Using these, in the same manner as in Example 1, a color filter having a colored pattern was obtained. In addition, the same evaluation as in Example 1 was performed. The results are shown in Table 1.

[0314] In addition, the structures of the specific initiators (Compound 2 to Compound 4) used here are shown below.

[0315] Compound 2

[0316]

[0317] Compound 3

[0318]

[0319] Compound 4

[0320]

[0321] The details of the black pigments (for the present invention, for comparison) described in Table 1 are as follows.

[0322] [Specific black pigment (A): non-coated type] Specific surfa...

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Abstract

The invention provides a photo-curing color composition, comprising a photopolymerization initiator with a specific chemical structure; more than ore black dye selected from (A) carbon black with a specific surface area less than 110m2 and pH of 2-9, (B) carbon black coated by the silica, and (C) carbon black coated by the resin; and a composition including the ethylenically unsaturated groups which can be additively polymerized. Moreover, the invention provides a color filter having the color patterns formed by the photo-curing color composition.

Description

Technical field [0001] The present invention relates to color filters used in liquid crystal display elements (Liquid Crystal Display (LCD)) or solid-state imaging elements (Charge Coupled Device (CCD), Complementary Metal Oxide Semiconductor (CMOS), etc.), etc. The formation of a useful photocurable coloring composition and the color filter obtained by using it. Background technique [0002] In recent years, there has been a demand for higher image quality and higher color intensity for displays used in various devices such as televisions, personal computers, and mobile phones. Particularly, for TV monitors, larger screens are also required. At present, the mainstream of these displays is the liquid crystal display method. In order to achieve the above-mentioned high image quality, high chroma, and large screen, the technology of the color filter used in this method becomes very important. Specifically, the technology related to the manufacturing process of the color filter and ...

Claims

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Application Information

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IPC IPC(8): G03F7/028G03F7/00
CPCC08K3/04C08K3/36C08K5/3492C09D5/00C09D7/61C09D7/62C09D7/63G02F1/133516
Inventor 国田一人
Owner FUJIFILM CORP
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