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Electrophoretic display coating liquid, preparation method thereof and electrophoretic display assembly

A technology of electrophoretic display and coating liquid, which is applied in the direction of electrophoretic coatings, coatings, instruments, etc., can solve the problems of poor dispersion of electrophoretic coating liquid, prone to defects, uneven coating, etc., achieve excellent cohesive strength, improve Appearance of coating, effect of reducing sedimentation rate

Active Publication Date: 2021-11-30
SHENZHEN AV DISPLAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide an electrophoretic display coating solution and its preparation method, and an electrophoretic display component, aiming to solve the problem of poor dispersion, poor stability and easy layering of the electrophoretic coating solution in the prior art, which leads to defects in the coating process , low coating yield, and uneven coating

Method used

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  • Electrophoretic display coating liquid, preparation method thereof and electrophoretic display assembly
  • Electrophoretic display coating liquid, preparation method thereof and electrophoretic display assembly
  • Electrophoretic display coating liquid, preparation method thereof and electrophoretic display assembly

Examples

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preparation example Construction

[0059] In some embodiments, the modified polyacrylic acid divalent metal salt resin is selected from polyacrylic acid zinc resin, and the preparation method of polyacrylic acid zinc resin includes the following steps:

[0060] G01. At room temperature, stir and distribute zinc oxide and hydrochloric acid in a molar ratio of 1:2 for 3 to 4 hours to obtain a zinc chloride solution;

[0061] G02. Stir and mix 20-40 grams of acrylic acid monomer and 10-30 grams of hydroxyethyl acrylate, drop in 3-5 g of ammonia water with a concentration of 50% by mass, stir and disperse evenly, heat up to 50-60 ° C, and carry out the reaction 1 After 1 hour to obtain a mixed solution, add zinc oxide solution to carry out stirring reaction for 2 to 3 hours, pass through nitrogen protection, drop 9 to 15 grams of ammonium persulfate with a concentration of 10%, and add dropwise at 1 second / drop. , and continue the heat preservation reaction for 2 to 3 hours to obtain the hydroxyl polyacrylic acid z...

Embodiment 1

[0082] Electrophoretic display coating solution and preparation method thereof

[0083] Electrophoretic display coating solution

[0084] The electrophoretic display coating solution includes the following raw materials in parts by weight:

[0085]

[0086]

[0087] Wherein, water-soluble resin is selected from water-based rosin resin;

[0088] The organic auxiliary agent solution includes 2 parts of leveling agent and 1 part of stabilizer, the concentration of the organic auxiliary agent solution is 15wt%, and it is a mixed solution of water and ethanol;

[0089] Adhesive is selected from zinc polyacrylate resin, and the preparation method of zinc polyacrylate resin is as follows:

[0090] (1) Put zinc oxide and hydrochloric acid at room temperature in a molar ratio of 1:2 into a beaker and stir to disperse for 3-4 hours, and react completely to prepare a zinc chloride solution for later use.

[0091] (2) Add 20-40 grams of acrylic acid monomer and 10-30 grams of h...

Embodiment 2

[0100] Electrophoretic display coating solution and preparation method thereof

[0101] Electrophoretic display coating solution

[0102] Compared with Example 1, the number of added parts of the organic auxiliary agent solution and the selection of specific components are modified to "the number of added parts of the organic auxiliary agent solution is 1 part, and includes 1 part of leveling agent";

[0103] The choice of the concentration of the organic additive solution is modified to "7wt%";

[0104] The number of added parts of the solvent and the selection of specific components are revised to "the number of added parts of the solvent is 25 parts, and includes 25 parts of deionized water".

[0105] Preparation method of electrophoretic display coating solution

[0106] The preparation method of the electrophoresis display coating solution is consistent with the preparation method provided in Example 1.

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Abstract

The invention provides electrophoretic display coating liquid, a preparation method thereof and an electrophoretic display component. The coating liquid comprises microcapsules, an adhesive, water-soluble resin, an organic auxiliary solution and a solvent. The obtained electrophoretic display coating liquid is high in stability and dispersity. The appearance, photoelectric property, mechanical strength and the like of a coating are good and stable. Sedimentation is reduced, the coating appearance yield is increased, and the production cost is reduced. The electrophoretic coating has higher adhesive force and cohesion strength on a substrate, falling and disengaging under stress are reduced, and the application range is widened.

Description

technical field [0001] The present application belongs to the technical field of electrophoretic display, and in particular relates to an electrophoretic display coating solution, a preparation method thereof, and an electrophoretic display component. Background technique [0002] The Massachusetts Institute of Technology (MIT) Media Laboratory proposed the concept of electronic ink (encapsulatedelectrophoretic ink), that is, microencapsulated electrophoretic display technology (encapsulatedelectrophoretic display). This display technology refers to the use of electrophoretic display principles to innovatively wrap pigment particles and dark dye solutions in microcapsules, and realize electrophoretic display in microcapsules, thereby improving the stability of electronic ink display and prolonging the use of electronic ink. life. [0003] At present, microcapsules in electronic ink are micron particles with wide particle size distribution and high density, and the capsule w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/02C09D7/65C09D5/44G02F1/167G02F1/16757
CPCC09D133/02C09D5/4407C09D5/4473C09D5/448G02F1/16757G02F1/167C08L93/04C08L45/00C08L61/14
Inventor 吴梓荣李捷妮邹志明洪俊斌
Owner SHENZHEN AV DISPLAY
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