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Pigment-dispersed resist composition for color filters

A technology of color filters and resists, which is applied in the direction of optical filters, pigment pastes, photosensitive materials used in optical mechanical equipment, etc., can solve the problem that the pigment dispersion and fluidity of pigment dispersions are not fully improved, Particle increase, poor coating smoothness, etc.

Inactive Publication Date: 2007-01-10
SAKATA INX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the dispersing force is further strengthened to obtain fine particles, the excessively pulverized particles will increase, making it difficult for the pigment particles to uniformly adsorb the resin for pigment dispersion, so the problem of low pigment dispersibility and fluidity cannot be solved.
[0012] As described above, even if a conventionally known high-pressure disperser is used as a pigment disperser, the pigment dispersibility and fluidity of the obtained pigment dispersion are not sufficiently improved, and the color filter obtained by using this pigment dispersion Pigment-dispersed resist compositions still have problems such as dull color and poor coating smoothness

Method used

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  • Pigment-dispersed resist composition for color filters
  • Pigment-dispersed resist composition for color filters
  • Pigment-dispersed resist composition for color filters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 7

[0147] (The pigment dispersion of Example 7 is also the pigment-dispersed resist composition for a color filter of Example 7)

[0148] To 786 parts of PMAC, add 47 parts of pigment dispersant containing basic groups and 12 parts of acrylic resin, mix and prepare varnish, then add 155 parts of C.I. Pigment Red 254, and pre-disperse with high-speed mixer. Then, mix 60 parts of acrylic resins, 28 parts of dipentaerythritol hexaacrylate, 9 parts of photopolymerization initiators, 465 parts of PMAC in 438 parts of predispersions, stir, use figure 2 After the high-pressure emulsifier shown was dispersed according to the following conditions, the coarse particles were removed by filtration with a 3 μpp folded filter paper, and the pigment dispersion of Example 7 was obtained, and the pigment-dispersed resist for the color filter of Example 7 was obtained combination.

[0149]

[0150] Spread pressure: 2×10 5 kPa

[0151] Pre-dispersed dispersion flow rate: 600 m / s

[0152] Noz...

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Abstract

A pigment-dispersed resist composition capable of giving color filters which exhibit clear hue (excellent transmission and contrast) and are excellent in the smoothness of coating. The pigment dispersion of the pigment-dispersed resist composition of the present invention is produced by a process which comprises using a high-pressure emulsifier provided with a straight orifice free from crook and inflection and a straight hollow section which is connected to the orifice and has a diameter larger than that of the orifice, passing a mixed fluid comprising a pigment, an organic solvent containing at least one member selected from among ester solvents having boiling points of 100 to 220 DEG C, ether solvents, ether-ester solvents, ketone solvents, aromatic hydrocarbon solvents, and nitrogenous organic solvents, and a pigment dispersant through the orifice under pressure at a flow rate of 100 to 1000 m / sec, and ejecting the resulting mixed fluid into the precedently discharged mixed fluid retained in the straight hollow section to disperse the pigment.

Description

technical field [0001] The present invention relates to a pigment-dispersed resist composition for color filters, and more specifically, to a filter having excellent pigment dispersibility and pigment dispersion stability, and excellent color (transparency, contrast) and coating smoothness. Pigment-dispersed resist composition for color chips. Background technique [0002] A color filter is formed by arranging two or more fine stripes of different colors in parallel on the surface of a transparent substrate such as glass, or by arranging fine pixels in a certain aspect ratio. The pixel size is a fine shape of tens to hundreds of microns, and each color is neatly arranged in a predetermined order. Regarding the manufacturing method of the color filter, various methods have been proposed. [0003] Since color filters require high transparency and a high-precision protective film with uniform thickness, color filters have been manufactured by the so-called dyeing method. In ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/20C09D17/00B01F3/08B01F5/06G03F7/004B01F5/00B01F5/02G02B5/22G03F7/00
CPCG03F7/0007B01F5/0268G02B5/223B01F2005/0022B01F3/0807B01F23/41B01F2025/915B01F25/25G02B5/20G03F7/004
Inventor 伊藤和典加野仁纪
Owner SAKATA INX
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