Colored resin composition, color filter substrate and liquid crystal display device

A resin composition and technology for display devices, which are applied in the directions of instruments, filters, coatings, etc., can solve the problems of reduced light transmittance of green pixels and darkening of brightness of liquid crystal display devices, and achieve high transmittance retention rate and transmittance. high rate effect

Active Publication Date: 2018-10-23
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] On the other hand, it is known that when phthalocyanine is irradiated with light in an oxygen-blocked state, the absorption spectrum changes and the light transmittance of a green pixel formed of phthalocyanine decreases (Non-Patent Document 1)
That is, when light is irradiated to a liquid crystal display device having green pixels made of phthalocyanine in an oxygen-blocked state, the brightness of the liquid crystal display device becomes dark.

Method used

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  • Colored resin composition, color filter substrate and liquid crystal display device
  • Colored resin composition, color filter substrate and liquid crystal display device
  • Colored resin composition, color filter substrate and liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0145] (Production of colored resin composition)

[0146] Add 36.84 g of the above-mentioned D-1, 24.56 g of the above-mentioned D-2, 1.51 g of Cycromer (registered trademark) P, DPHA (dipentaerythritol hexaacrylate) reactive monomer (Nippon Kayaku "Kayarad (registered trademark) )DPHA") 4.59g, deactivator (Sigma Aldrich "9-ethyl-3-nitrocarbazole" (purity 98%)) 0.29g, 32.21g of PMA to prepare C.I. Pigment Green 58 / C.I. Pigment Yellow 138=60 / 40 colored resin composition.

[0147] Make the backlight brightness 10000cd / m 2 And the obtained colored resin composition was evaluated according to the said evaluation method. The initial transmittance was good at 51.0. Furthermore, weather resistance evaluation was performed, and the result showed that the transmittance retention rate was 84%, which was a favorable value.

Embodiment 2

[0149] The deactivator 9-ethyl-3-nitrocarbazole in embodiment 1 is replaced with the nitrocarbazole series initiator of following formula (3), except that, operate exactly the same as embodiment 1 and make A colored resin composition is produced. The initial transmittance of the obtained colored resin composition was 51.0, which was favorable. In addition, make the backlight brightness 10000cd / m 2 , The weather resistance evaluation was carried out, and the result showed that the transmittance retention rate was 84%, which was a good value. Further photosensitivity evaluation was carried out, and the required exposure amount was 40mJ / cm 2 , showing good properties. Therefore, an initiator having a nitrocarbazole moiety can be said to have both the effect of a deactivator and the effect as a photopolymerization initiator.

[0150]

Embodiment 3

[0166] In Example 2, instead of using Pigment Green 58, Pigment Green 59, which is also a polyhalogenated zinc phthalocyanine, was used, and the ratio of Pigment Green 59 and Pigment Yellow 138 was as shown in Table 2. In exactly the same manner, a colored resin composition was prepared and evaluated. The initial transmittance showed a good value of 50.5. In addition, the brightness of the backlight is 10000cd / m 2 When the transmittance retention rate was evaluated, it was 89%, which is practically sufficient. Therefore, it can be said that the initial transmittance of the combination of polyhalogenated zinc phthalocyanine, Pigment Yellow 138, and the compound of the general formula (1) is extremely good, and the transmittance retention rate is good.

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Abstract

Provided is a colored resin composition which contains a polyhalogenated zinc phthalocyanine, a yellow pigment, a binder resin and a compound represented by general formula (1), wherein the yellow pigment is a pigment selected from between C.I. Pigment Yellow 138 and C.I. Pigment Yellow 185. The purpose of the present invention is to provide a colored resin composition having high transmittance retention when blocking oxygen.

Description

technical field [0001] The present invention relates to a colored resin composition, a color filter substrate, and a liquid crystal display device. Background technique [0002] Liquid crystal display devices are used in various applications such as televisions, notebook PCs, portable information terminals, smartphones, and digital cameras, taking advantage of their light weight, thin profile, and low power consumption. [0003] Liquid crystal display devices are required to display an optimal color of 3 to 6 primary colors depending on the application. The optimal coloring material has been searched for as a coloring material composition used for a pixel of a color filter substrate responsible for the color performance of a liquid crystal display device. [0004] In green pixels, combinations of various pigments have been studied, but generally a green pigment having a phthalocyanine skeleton and a yellow pigment are combined (Patent Document 1). As green pigments having ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/031C09D7/40C09D201/00G02B5/20G02F1/1335G02F1/13357G03F7/004
CPCG02B5/20C09D7/40C09D5/24C09D7/63G03F7/105G03F7/031G03F7/0007G02F1/133514G03F7/032C09D201/00G02F2202/025
Inventor 桥本升太山下哲夫神井康宏川边宪一宇田川敬造
Owner TORAY IND INC
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