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Modified black pigment liquid used for black matrix and preparation method thereof

A black pigment, black matrix technology, applied in the direction of pigment paste, etc., can solve the problems of low thermal stability, low shading, low resistance and so on

Active Publication Date: 2015-08-12
BEIJING SINEVA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a modified black pigment solution for black matrix and its preparation method, which is used to solve the problems of low light-shielding performance, low thermal stability and low resistance in the black pigment solution used for preparing black matrix in the prior art

Method used

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  • Modified black pigment liquid used for black matrix and preparation method thereof
  • Modified black pigment liquid used for black matrix and preparation method thereof
  • Modified black pigment liquid used for black matrix and preparation method thereof

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preparation example Construction

[0033] According to the preparation method of the modified black pigment liquid of the present invention, the method comprises the step of preparing the black pigment liquid: providing raw materials in parts by weight: 100 parts of black pigment, dispersant containing 20-50 parts of solid content, 5-35 parts of 1 part solid resin; mix the raw materials evenly to obtain a black pigment liquid. The method comprises the step of modifying the black pigment liquid: adding polydopamine nanoparticles into the black pigment liquid, and stirring for 1-3 hours to obtain the modified black pigment liquid.

[0034] The modified black pigment obtained by the preparation method of the invention has high light-shielding properties, high impedance and good thermal stability.

Embodiment 1

[0037]According to the preparation method of the modified black pigment liquid of the present invention, firstly carry out the black pigment liquid preparation step: provide raw materials: 100 parts of black pigment, dispersant containing 20 parts of solid content, resin containing 5 parts of solid content; mix the raw materials evenly Obtain black paint solution. Wherein, the solid content concentration of the dispersant is 40%, and the solid content concentration of the resin is 40%; Add it into the black pigment solution and stir for 1 hour to obtain the modified black pigment solution. The particle size of polydopamine nanoparticles is 50nm.

Embodiment 2

[0039] According to the preparation method of the modified black pigment liquid of the present invention, first carry out the black pigment liquid preparation step: provide raw materials: 100 parts of black pigment, dispersant containing 50 parts of solid content, resin containing 35 parts of solid content; mix the raw materials evenly A black pigment solution is obtained. Wherein, the solid content concentration of dispersant is preferably 40%, the solid content concentration of resin is 40%, and the black pigment is carbon; then enter the modification step: add 4% polydopamine nanoparticles accounting for black pigment liquid in weight percentage to black In the pigment liquid, the modified black pigment liquid is obtained after stirring for 3 hours, and the particle diameter of the polydopamine nanoparticles is 200 nm.

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Abstract

The invention discloses a modified black pigment liquid used for black matrix, and a preparation method thereof. According to the preparation method, poly dopamine nano particles are added into a black pigment liquid, wherein weight amount of the poly dopamine nano particles accounts for 1 to 4% of that of the black pigment liquid. The preparation method comprises modification of the black pigment liquid, wherein the poly dopamine nano particles are added into the black pigment liquid, and the modified black pigment liquid is obtained via 1 to 3h of stirring. The obtained modified black pigment liquid and black matrix prepared from the modified black pigment liquid possess excellent light shading capacity, extremely high thermal stability, and high resistance value.

Description

technical field [0001] The invention relates to a black pigment liquid for a black matrix, in particular to a modified black pigment liquid for a black matrix and a preparation method thereof. Background technique [0002] In the field of liquid crystal display, a black matrix is ​​usually used to suppress color mixing among red, green, and blue monochromatic lights, and at the same time prevent light leakage and improve contrast, so it is necessary to use high light-shielding materials. [0003] Although the chromium metal evaporation film method has high light-shielding properties, its formation process is complicated and the cost is high. At present, the pigment method is mainly used to achieve the above purpose, that is, the black matrix is ​​prepared with a black pigment liquid containing black pigment. The black pigment currently used is generally carbon black. In order to improve the light-shielding property, the concentration of the black pigment needs to be increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00
CPCC09D17/003C09D17/005
Inventor 于祥
Owner BEIJING SINEVA TECH
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