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Light solidifying coloring composition and color filter using the same

A coloring composition, photocurable technology, applied in optics, instruments, optical components, etc., can solve the problems of limited photopolymerizable monomer content, pattern shedding or defect, sensitivity not reaching a satisfactory level, etc.

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

[0004] Regardless of whether a dye or a pigment is used as a colorant, the content of the colorant in the colored curable composition for color filter production must be high. The content of the photopolymerization initiator and photopolymerizable monomer, which are necessary components for curing the object, is limited, or the light of the exposure wavelength used for curing is hindered from reaching the interface of the glass support body, etc. High sensitivity and high adhesion to support
[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 irradiation 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 with a coloring pattern excellent in adhesion to a support, but the present situation is that such a composition and a color filter have 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

preparation example Construction

[0219] Preparation of Pigments Dispersed with Dispersants

[0220] Pigments having the above average particle size and particle size distribution can be prepared by the following method. That is: mix commercially available pigments with other pigments (average particle size usually exceeding 300nm) as desired, and the above-mentioned specific dispersant and solvent to form a pigment mixture, and use a pulverizer such as a bead mill or a roller mill to form a pigment mixture. It is obtained by mixing and stirring while pulverizing. The pigment thus obtained is usually in the form of a pigment dispersion.

[0221] The above-mentioned specific dispersant is adsorbed on the surface of the pigment and plays a role of preventing re-agglomeration of the pigment. The specific dispersant is a graft type polymer having an anchoring site to the pigment surface. In order to promote the adsorption of such a polymer dispersant, it is also preferable to use a pigment derivative. As such ...

Embodiment 1

[0394] Here, the example which prepares the photocurable coloring composition α-1 containing a coloring agent (pigment), and manufactures the color filter used for liquid crystal display elements using this curable composition α-1 is demonstrated.

[0395] [1. Preparation of photocurable coloring composition α-1]

[0396] 1-1. Preparation of Pigment Dispersion (Q1): Green

[0397] 40 parts by mass of a 30 / 70 (mass ratio) mixture of C.I. Pigment Green 36 and C.I. Pigment Yellow 219 as a pigment, BYK2001 (Disperbyk: manufactured by Byk Chemie (BYK) Co., Ltd., solid content concentration: 45.1% by mass) as a dispersant 7 parts by mass (approximately 4.51 parts by mass in terms of solid content), 3 parts by mass of the specific dispersant [exemplary compound (P-1)] of the present invention, and 150 parts by mass of ethyl 3-ethoxypropionate as a solvent The resulting mixed solution was mixed and stirred with a bead mill for 20 hours to prepare a pigment dispersion (Q1).

[0398] ...

Embodiment 2～12

[0444] Of the specific initiator (compound 1), the pigment dispersion (Q1), and the specific dispersant used for the preparation of the pigment dispersion in the composition α-1 used to prepare the photocurable coloring composition α-1 Except having replaced at least one of them with the thing shown in following Table 1, it carried out similarly to Example 1, and prepared photocurable coloring composition α-2 - α-12. Using these, respectively, it carried out similarly to Example 1, and obtained the color filter which has a colored pattern. And, to the colored layer that has used pigment dispersion liquid Q4 with 200mJ / cm 2 Evaluation was performed in the same manner as in Example 1 except that exposure was performed at an exposure amount of . The results are shown in Table 1.

[0445]In addition, the structures of the specific initiators (compound 2 to compound 5) used here are shown below. In addition, as the specific dispersant, a compound selected from the above-mentione...

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Abstract

The invention provides a photo-curing color composition and a color filter thereby. The photo-curing color composition includes: a photopolymerization initiator containing the heterocycle of the composition represented by the general formula (I)-(V); a scattered colouring pigment used for an alkaline soluble branched macromolecular compound with the poly(methyl)acrylic ester chain at the side chain; and a polymerized compound. The photopolymerization initiator comprises the compound of the general formula (IV), hydrogen atom, alkyl represented by R1, R2, and groups represented by the general formula (IV-A) or (IV-B); R3, R4 represent halogen atom and alkyl; X, T represent chlorine atom or bromine atom. m, n are integers of 0-3.

Description

technical field [0001] The present invention relates to a photocurable coloring composition useful for forming a color filter used in a liquid crystal display device (LCD) or a solid-state imaging device (CCD, CMOS, etc.), and a color filter obtained using the same. Background technique [0002] In recent years, various displays such as televisions, personal computers, and mobile phones have been required to have higher image quality and higher chromaticity. In particular, displays for televisions are also required to have larger screen sizes. Currently, the mainstream of these displays is the liquid crystal display system, and in order to achieve the above-mentioned high image quality, high saturation, and large screen size, the technology of color filters used in liquid crystal displays has become very important. Specifically, it relates to a manufacturing process of a color filter and a technology related to a photocurable coloring composition suitable therefor. [0003...

Claims

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Application Information

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IPC IPC(8): G03F7/028G03F7/00G02B5/23G02F1/1335
Inventor 国田一人
Owner FUJIFILM CORP
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