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Pigment dispersion composition for black matrix and pigment dispersion resist composition for black matrix containing the same

A pigment dispersant and pigment dispersing technology, which is applied in photosensitive materials used in optomechanical equipment, photoplate making process of patterned surface, optics, etc., can solve the problem that the unexposed part cannot be completely removed, the adhesion is reduced, and the development is confirmed to be terminated It achieves the effect of excellent optical density, low reflectivity, and excellent dispersion stability due to problems such as timing difficulties

Pending Publication Date: 2019-05-07
SAKATA INX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low development latitude is because the exposed part decreases and disappears immediately after the unexposed part is removed, so it is difficult to confirm the timing of stopping the development.
In particular, in a resist composition having a high pigment concentration as described above, since the degree of uncured in the exposed portion tends to increase, sufficient development latitude cannot be obtained, and adhesion is also reduced.
Therefore, unexposed areas cannot be completely removed, or the number of exposed areas decreases, and predetermined performance cannot be obtained, which poses a very serious problem in terms of process management.

Method used

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  • Pigment dispersion composition for black matrix and pigment dispersion resist composition for black matrix containing the same
  • Pigment dispersion composition for black matrix and pigment dispersion resist composition for black matrix containing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0123]

[0124] In order to become the combination of Table 1 (the usage-amount of each material in Table 1 is mass %), various materials were mixed and kneaded with the bead mill, and the pigment dispersion composition for black matrices of Nos. 1-8 was prepared.

[0125]

[0126] Using a high-speed mixer, uniformly mix the pigment dispersion compositions for each black matrix No. 1 to No. 8 with other materials to form the composition of Table 2 (the usage amount of each material in Table 2 is mass %), and then use a pore diameter of 0.5 μm Filtration was performed with a filter to obtain the pigment-dispersed resist compositions for black matrices of Examples 1-5 and Comparative Examples 1-3.

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Abstract

The invention provides a pigment dispersion composition for a black matrix, with high dispersion stability, and a pigment dispersion resist composition for a black matrix containing the same, with preferable shading performance and low reflectivity. Specifically the provided pigment dispersion composition for a black matrix contains carbon black, precipitated barium sulfate, a basic group-containing pigment dispersant, a pigment derivative, an alkali-soluble resin, and a solvent, and is characterized by a content ratio of carbon black to precipitated barium sulfate (carbon black / precipitated barium sulfate) is 95 / 5 to 65 / 35.

Description

technical field [0001] The present invention relates to a pigment dispersion composition for black matrix used for forming a black matrix of a liquid crystal panel, and a pigment dispersion resist composition for black matrix containing the pigment dispersion composition for black matrix. Background technique [0002] The liquid crystal method is often used in image display devices such as computers, color TVs, mobile phones, tablet devices, and game terminals. A liquid crystal image display device displays images on a screen by using color filters forming pixels of each color and liquid crystals that function as shutters. [0003] Next, in the color filter, a black matrix (black matrix) having stripe-like or mosaic-like openings is usually formed on the surface of a transparent substrate such as glass or plastic plate, and then red, green, blue, etc. are sequentially formed on the openings. 3+ pixels with different colors. [0004] Here, the black matrix suppresses color ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/004G03F7/027
CPCG03F7/0042G03F7/027G03F7/028G03F7/0007
Inventor 辻康人户田光信
Owner SAKATA INX
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