Colorant composition for color filter, color filter using same, and liquid crystal display device

A coloring composition and color filter technology, which is applied to photosensitive materials, instruments, and optical filters used in optomechanical equipment, can solve problems such as poor orientation, uneven display, and difficulty in obtaining voltage retention. The effect of improvement in the reduction of the retention rate

Active Publication Date: 2014-06-25
TOYO INK SC HOLD CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, for halogenated zinc phthalocyanine pigments with higher acidity than halogenated copper phthalocyanine pigments, it is very difficult to obtain good voltage retention, no display unevenness, no poor orientation, etc., and good dispersion stability over time. Photosensitive coloring composition for color filter

Method used

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  • Colorant composition for color filter, color filter using same, and liquid crystal display device
  • Colorant composition for color filter, color filter using same, and liquid crystal display device
  • Colorant composition for color filter, color filter using same, and liquid crystal display device

Examples

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Embodiment

[0136] Next, a synthesis example of a polyfunctional acrylate as a photopolymerizable monomer, an example and a comparative example of preparing a colored photosensitive composition containing various photopolymerizable monomers will be specifically described, but the present invention is not limited to these The embodiments can be implemented with various modifications without departing from the gist of the present invention. In addition, "part" in an Example means a "weight part." In addition, Mn and Mw are number average molecular weight and weight average molecular weight, respectively.

Synthetic example 1

[0138] 623 g of dipentaerythritol hexaacrylate (manufactured by Toagosei Co., Ltd.) and 44 g of hexamethylene diisocyanate were added to a 5-port reaction vessel with an internal volume of 1 liter, and reacted at 60° C. for 8 hours to obtain The carbamate group number of the acyl group is 1.64×10 -3 mol / g, double bond base is 8.22×10 -3 mol / g product of multifunctional acrylate (1). In the product, the proportion of multifunctional acrylate (1) is 45% by weight, and the rest is other photopolymerizable monomers. In addition, the absence of isocyanate groups in the reaction product was confirmed by IR analysis.

Synthetic example 2

[0140] Add 142g of glycidyl methacrylate, 77g of acrylic acid, 0.2g of methoxyphenol, and 3g of triphenylphosphine into a 5-port reaction vessel with an internal capacity of 1 liter, and react at 80°C for 12 hours to obtain 2-methacrylic acid Hydroxy-3-acryloylpropyl ester. Further, 490 g of hexamethylene diisocyanate adduct [Coronet HL (manufactured by Nippon Polyurethane Co., Ltd.)] of trimethylolpropane was added thereto, and reacted at 60° C. for 8 hours to obtain The carbamate group number of the acyl group is 4.82×10 -3 mol / g, double bond base is 4.52×10 -3 mol / g product of multifunctional acrylate (2). In the product, the proportion of multifunctional acrylate (2) is 100% by weight. In addition, the absence of isocyanate groups in the reaction product was confirmed by IR analysis.

[0141] (Synthesis of acrylic resin A and preparation of its solution)

[0142] Add 800 parts of cyclohexanone to the reaction container, and while injecting nitrogen gas into the contai...

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PUM

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Abstract

Disclosed is a photosensitive colorant composition containing: a green colorant including at least a halogenated zinc phthalocyanine pigment; a photopolymerizable monomer; a resin; a photopolymerization initiator; and a solvent. Said photopolymerizable monomer includes: either a polyfunctional urethane acrylate (constituting 15 to 45 wt%, inclusively, of the solid part of said photosensitive colorant composition) that has at least 0.7 x 10-3 mol / g of urethane groups and at least 4.5 x 10-3 mol / g of double bond groups, and that has a (meth) acryloyl group obtained by reacting a polyfunctional isocyanate with a (meth)acrylate having a hydroxyl group; or, dipentaerythritol pentaacrylate and dipentaerythritol hexaacrylate (constituting 10 to 25 wt%, inclusively, of the solid part of said photosensitive colorant composition). Furthermore, the voltage holding ratio of a liquid crystal display element provided with the color filter obtained by using said photosensitive colorant composition is no less than 90%.

Description

technical field [0001] This invention relates to the coloring composition for color filters used for manufacture of the color filter used for a color liquid crystal display device, a color imaging element, etc., and the color filter using this composition. Background technique [0002] A liquid crystal display device is a display device in which the degree of polarization of light passing through the first polarizing plate is controlled by a liquid crystal layer sandwiched between two polarizing plates, and the amount of light passing through the second polarizing plate is controlled to display. Color display can be realized by disposing a color filter between the polarizers. [0003] A color filter is a component obtained by arranging two or more fine band (stripe) filter segments of different hues in parallel or crosswise on the surface of a transparent substrate such as glass, or arranging fine filters in a fixed vertical and horizontal arrangement. Section obtained comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/20C09B47/04C09B67/20G02B5/22G02F1/1335G03F7/004G03F7/027
CPCG02B5/223G02F1/133516G03F7/0007G03F7/027C09B47/04C09B67/0064
Inventor 山本裕一山田侑纪岩崎真理吉田佳代釜田敦子宗内研二萩原英聪小林由佳石丸佳子
Owner TOYO INK SC HOLD CO LTD
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