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Pigment dispersion, pigment photoresistor and preparation thereof

A pigment dispersion and pigment technology, applied in pigment slurry, opto-mechanical equipment, optics, etc., can solve the problems of pigment dispersion particle size not meeting the requirements, wide particle size distribution range, complex process, etc., and achieve color display. Improved quality, narrow particle size distribution, good colorimetric properties

Active Publication Date: 2010-03-03
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The micronization process of organic pigments in the prior art generally has technical problems such as the particle size of the prepared pigment dispersion does not meet the requirements, the particle size distribution range is wide, the production efficiency is low, the grinding cycle is long, and the process is complicated.
In recent years, the existing technology of using hyperdispersants to refine organic pigments in different grinding equipment can prevent the re-agglomeration of pigment dispersions to a certain extent and reduce the grinding time, but the prepared pigments are dispersed There are still defects such as wide particle distribution range and poor stability; at the same time, it is difficult to accurately control the amount of hyperdispersant added. When the hyperdispersant is excessive, the hyperdispersant that is not absorbed by the organic pigment will make the pigment dispersion luster and other properties Decrease; when the hyperdispersant is insufficient, the particle distribution range cannot be guaranteed due to the insufficient space shielding of the pigment dispersion, and the product stability is poor

Method used

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  • Pigment dispersion, pigment photoresistor and preparation thereof
  • Pigment dispersion, pigment photoresistor and preparation thereof
  • Pigment dispersion, pigment photoresistor and preparation thereof

Examples

Experimental program
Comparison scheme
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no. 1 example

[0036] In this embodiment, the main components of the pigment dispersion are shown in column "1" of the embodiment in Table 1. The pigment dispersion of this embodiment comprises: the pigment that is the P.R.254 of 13.51% by weight and the P.Y.139 of 1.5% by weight, the BYK2000 dispersant that is 11.25% by weight, the SYNERGIST2105 auxiliary dispersant that is 1.2% by weight, A dispersion resin mixed with 6% by weight of ACAZ 200 and 3% by weight of CN2284, and a first solvent mixed with 60.54% by weight of PMA and 3% by weight of n-BuOH.

[0037] After testing, the particle size (average particle diameter) of the pigment dispersion in this embodiment is 16.14nm, the viscosity is 4.9cP, and the storage stability is high.

[0038] The second embodiment of pigment dispersion

[0039] In this embodiment, the main components of the pigment dispersion are shown in the "two" column of the embodiment in Table 1. The pigment dispersion of this embodiment comprises: the pigment that ...

no. 4 example

[0045] In this embodiment, the main components of the pigment dispersion are shown in column "Four" of the embodiment in Table 1. The pigment dispersion of this embodiment comprises: the P.R.254 that is 13.51% by weight and the P.Y.139 mixed pigment that is 1.5% by weight, the BYK2000 dispersant that is 11.25% by weight, the SYNERGIST2105 auxiliary dispersant that is 1.27% by weight, 4.5% by weight of Joncry1611 dispersion resin, and 67.97% by weight of PMA first solvent.

[0046] After testing, the particle size (average particle diameter) of the pigment dispersion in this embodiment is 17.5nm, the viscosity is 5.0cP, and the storage stability is high.

no. 5 example

[0048] In this embodiment, the main components of the pigment dispersion are shown in column "V" of the embodiment in Table 1. The pigment dispersion of this embodiment comprises: the P.R.254 that is 13.51% by weight and the P.Y.139 mixed pigment that is 1.5% by weight, the BYK2000 dispersant that is 11.25% by weight, the SYNERGIST2105 auxiliary dispersant that is 1.27% by weight, A dispersion resin mixed with 6% by weight of ACAZ 200 and 1.5% by weight of CN2284, and 64.97% by weight of the first PMA solvent.

[0049] After testing, the particle size (average particle diameter) of the pigment dispersion in this embodiment is 16.5nm, the viscosity is 5.0cP, and the storage stability is high.

[0050] Further, in each embodiment of the above-mentioned pigment dispersion, the pigment may include: a red pigment or a plurality of red pigment compositions, a combination of red pigment and yellow pigment, a combination of red pigment and orange pigment, a yellow pigment and Combina...

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Abstract

The invention relates to a pigment dispersion, a pigment photoresistor and a preparation method thereof. The pigment dispersion comprises 5 to 20 weight percent of pigment, 1 to 20 weight percent of dispersant, 0 to 10 weight percent of auxiliary dispersant, 0.05 to 20 weight percent of dispersion resin and 40 to 85 percent of first solvent. The pigment dispersion with a small particle size and anarrow particle size distribution range has high storage stability and high colorimetric performance. The pigment photoresistor prepared on the basis of the pigment dispersion meets the material selection requirements of color optical filters and liquid crystal displays; and the color optical filters prepared on the basis of the pigment photoresistor is high in color saturation, so the color display quality of the liquid crystal displays having the color optical filters is improved obviously.

Description

technical field [0001] The invention relates to a pigment dispersion, a pigment photoresist and a preparation method thereof, in particular to a pigment dispersion and a pigment photoresist which can be used for preparing a color filter or a liquid crystal display and a preparation method thereof. Background technique [0002] The color filter is a key component of the liquid crystal display to realize color display, and the performance of the color filter mainly depends on the performance of the pigment photoresist and the film-forming process of the color filter. The preparation of pigment photoresists for color filters of liquid crystal displays requires the use of micronized organic pigments, which are usually applied in the preparation process of color filters in the form of fine particle dispersion (ie: pigment dispersion). For example, the coloring process of organic pigments is to disperse in the coloring body in the form of micronized particles. In the coloring pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00C09B67/04G03F7/027G02B5/23G02F1/1335
Inventor 杨久霞邵喜斌吕艳英白峰
Owner BOE TECH GRP CO LTD
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