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Black matrix substrate

A black matrix and substrate technology, which is applied in the field of black matrix substrates, can solve the problems of deterioration of visibility and achieve the effects of excellent visibility, high electrical reliability, and low reflectivity

Active Publication Date: 2015-11-04
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A liquid crystal display device equipped with a color filter substrate having a resin black matrix containing a light-shielding material such as carbon black has excellent visibility indoors. Visibility degradation becomes a problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0170] Although Examples and Comparative Examples are given below and the present invention will be described in more detail, the present invention is not limited thereto.

[0171]

[0172] [Refractive index of particles]

[0173] The refractive index was obtained by the Baker line method. Thirty samples of the same substance as target fine particles were prepared, and after the refractive index of each was measured, the refractive index was calculated from the average value thereof.

[0174] [Optical density (OD value)]

[0175] A light-shielding layer with a predetermined film thickness was formed on alkali-free glass with a thickness of 0.7 mm, and the respective intensities of incident light and transmitted light were measured using a microscopic spectrometer (MCPD2000; manufactured by Otsuka Electronics Co., Ltd.), and calculated from the following mathematical formula (7), It can be calculated|required by the average value of the value calculated|required at interval...

manufacture example

[0196] (Synthesis of polyamic acid A-1)

[0197] Charge 4,4'-diaminophenyl ether (0.30 molar equivalents), p-phenylenediamine (0.65 molar equivalents), bis(3-aminopropyl)tetramethyldisiloxane (0.05 molar equivalents), γ -850 g of butyrolactone and 850 g of N-methyl-2-pyrrolidone, 3,3',4,4'-oxydiphthalic dianhydride (0.9975 molar equivalent) was added and reacted at 80°C for 3 hours . Furthermore, maleic anhydride (0.02 molar equivalent) was added, it was made to react at 80 degreeC for 1 hour, and the solution of polyamic-acid A-1 (20 mass % of polymer concentration) was obtained.

[0198] (Synthesis of polyamic acid A-2)

[0199] Charge 4,4'-diaminophenyl ether (0.95 molar equivalent), bis(3-aminopropyl)tetramethyldisiloxane (0.05 molar equivalent) and γ-butyrolactone 1700g (100%), Pyromellitic dianhydride (0.49 molar equivalent) and benzophenone tetracarboxylic dianhydride (0.50 molar equivalent) were added, and it was made to react at 80 degreeC for 3 hours. Furthermore...

Embodiment 1

[0231] After mixing the light-shielding material dispersion Bk1 (364g) and the white particle dispersion WD1 (364g), add polyamic acid A-1 (63g), γ-butyrolactone (82g), N-methyl-2-pyrrolidone ( 87g), 3-methyl-3-methoxybutyl acetate (39g) and surfactant LC951 (1g; manufactured by Kusumoto Kasei), to obtain a total solid content concentration of 10% by mass, light-shielding material / white particles / resin (mass Ratio)=35 / 35 / 30 black resin composition LL1. In addition, the resin contains polyamic acid in the dispersion liquid and non-volatile components of the surfactant.

[0232] To the light-shielding material dispersion liquid Bk4 (569.9 g), propylene glycol monomethyl ether acetate 50% by mass solution (18.7 g) of bisphenoxyethanol fluorene diacrylate as a polyfunctional monomer and dipentaerythritol hexaacrylate were added (DHPA; manufactured by Nippon Kayaku Co., Ltd.) propylene glycol monomethyl ether acetate 50% by mass solution (25.9 g), as a photopolymerization initiato...

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Abstract

The objective of the present invention is to provide a resin black matrix substrate wherein a resin black matrix that has a low reflectance, while having a sufficient optical density is formed. The present invention is a black matrix substrate which sequentially comprises a transparent substrate, a light blocking layer (A) and a light blocking layer (B), and wherein the optical density per thickness of the light blocking layer (A) is lower than the optical density per thickness of the light blocking layer (B), and the light blocking layer (A) contains a light blocking material and fine particles having a refractive index of 1.4-1.8. Due to the characteristics thereof, the black matrix substrate of the present invention is useful for color filters and liquid crystal display devices.

Description

technical field [0001] The present invention relates to a black matrix substrate that can be used for a color filter, and the color filter is used for a liquid crystal display device and a light emitting device. Background technique [0002] A liquid crystal display device has a structure in which a liquid crystal layer is sandwiched between two substrates, and the electro-optic response of the liquid crystal layer is used to express brightness and darkness, and color display can also be performed by using a color filter substrate. [0003] In the past, the black matrix formed on the color filter substrate and used as the light-shielding layer has been mainly made of metal thin films made of chromium-based materials. However, in order to reduce costs and environmental pollution, resin black matrices containing resin and light-shielding materials have been developed. A liquid crystal display device equipped with a color filter substrate having a resin black matrix containing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20C08F2/44C08F2/50G02F1/1335G03F7/004H01L51/50H05B33/12
CPCC08F2/44C08F2/50G02F1/133512G02F2202/36G03F7/004H01L51/5284H01L2251/5369H10K2102/331H10K59/8792C08F212/08C08F220/14C08F220/06C08F220/325C08F222/102C08F222/1006
Inventor 西山雅仁的羽良典野中晴支井上欣彦
Owner TORAY IND INC
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