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Polyacrylate dispersant, pigment dispersion, color photoresist, color film substrate and display device

A polyacrylate and pigment dispersion technology, applied in optics, optical components, opto-mechanical equipment, etc., can solve the problems of poor controllability of dispersant POSS modification, affecting the performance of color photoresist, poor stability of pigment liquid, etc. Achieve the effect of excellent resolution, excellent surface flatness, and low dielectric constant

Active Publication Date: 2015-09-16
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because it involves the use of a polymerization method to prepare a dispersant, the controllability of the POSS modification of the dispersant is poor, which will lead to poor stability and easy agglomeration of the pigment solution stabilized by the dispersant, which will eventually affect the performance of the color photoresist

Method used

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  • Polyacrylate dispersant, pigment dispersion, color photoresist, color film substrate and display device
  • Polyacrylate dispersant, pigment dispersion, color photoresist, color film substrate and display device

Examples

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Embodiment Construction

[0028] When the POSS modified polyacrylate dispersant of the present invention is used to disperse pigment powder, due to the steric hindrance effect of the POSS structure, the stability of the pigment dispersion can be significantly improved.

[0029] The POSS modified polyacrylate dispersant of the present invention is prepared by esterifying the polyacrylate dispersant and POSS. When it is used to disperse pigment powder, it can improve the stability of pigment dispersion due to the steric hindrance effect of POSS structure.

[0030] For example, the POSS modified polyacrylate dispersant of the present invention is based on amide condensation agents such as 1-hydroxybenzotriazole (HOBt) and 1-(3-dimethylaminopropyl)-3-ethyl Under the catalysis of diimine (EDC) and POSS through esterification reaction, POSS is modified on the polyacrylate dispersant, and the POSS modified polyacrylate dispersant is obtained.

[0031] The molecular formula of POSS is (SiO 1.5 ) m (C 6 h ...

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Abstract

Disclosed are a polyacrylate dispersing agent, a pigment dispersion liquid, a color photoresist, a color film substrate and a display device. The polyacrylate dispersing agent of the present invention is a polyhedral oligomeric silsesquioxane-modified polyacrylate dispersing agent which is prepared from a polyacrylate dispersing agent and polyhedral oligomeric silsesquioxane through an esterification reaction. When the polyacrylate dispersing agent of the present invention is used for dispersing pigment powder, because of the steric hindrance effect of the polyhedral oligomeric silsesquioxane structure, the stability of the pigment dispersion liquid can be remarkably improved. The color photoresist prepared based on the pigment dispersion liquid has extremely high thermal resistance, excellent resolution and surface flatness, and at the same time low dielectric constant.

Description

technical field [0001] The invention relates to a polyacrylate dispersant, a pigment dispersion liquid, a color photoresist, a color film substrate and a display device. Background technique [0002] The color filter is a key device for liquid crystal display to be colored. In the preparation method of the color filter, the pigment dispersion method is the most commonly used method. The basic steps of the pigment dispersion method are to coat the color photoresist on the base substrate, and then irradiate with ultraviolet light to cure the color photoresist to form a pigment photoresist. The color photoresist contains a pigment dispersion, and the pigment dispersion mainly includes a colored pigment, a dispersant, a binder resin and a solvent. The colored pigments in the color dispersion determine the color of the final colored photoresist. The stability of the pigment dispersion is very important. If the stability of the pigment dispersion is not good, the pigment particl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F20/10C08F8/42G03F7/004G03F7/027
CPCC08F8/42G03F7/004C08F20/10G02B5/223G03F7/027C08F220/10C08G77/442C08L83/10C08F220/1804C08F220/1811G03F7/0007G03F7/033G03F7/105C08F220/20G03F7/028G03F7/0758
Inventor 唐琛王雪岚常珊
Owner BOE TECH GRP CO LTD
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