Preparation method of color electrophoretic display film material and application of transfer printing technology in it

A color electrophoresis and display film technology, which is applied in the fields of instruments, nonlinear optics, optics, etc., can solve the problems of incapable control of the thickness of the capsule layer and the limitation of the mesh size, and achieve large-scale mass production, simple control, and image color Vibrant and bright effect

Active Publication Date: 2019-05-17
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Therefore, the sub-pixel method is a good choice for the colorization of microcapsule electrophoretic display films, while the traditional screen printing and hollow mask printing processes are effective and feasible methods for coating microcapsules of each color in partitions. The mask printing process also has problems such as mesh size limitation and capsule layer thickness cannot be accurately controlled

Method used

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  • Preparation method of color electrophoretic display film material and application of transfer printing technology in it
  • Preparation method of color electrophoretic display film material and application of transfer printing technology in it
  • Preparation method of color electrophoretic display film material and application of transfer printing technology in it

Examples

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preparation example Construction

[0040]The invention provides a method for preparing a color electrophoretic display film material and the application of transfer printing technology therein. Capsule film layer, the microcapsule film layer is transferred from the transfer stamp to the temporary substrate, and then the temporary substrate is used to transfer the microcapsule film layers of various colors to the target substrate through precise alignment and nesting, and then on the target substrate Form a color microcapsule electrophoresis display film material.

[0041] That is to use the transfer stamp to transfer the film layers of microcapsules of various colors to the temporary substrate, and then transfer the layers to the target substrate by precisely aligning each layer to realize the color electronic paper of color mixing of each color microcapsule. The color microcapsules are more than one color particle microcapsules.

[0042] Transfer the single-color microcapsule film layer coated on it to the te...

Embodiment 1

[0044] Specifically, the preparation method of the color electrophoretic display film material described in this embodiment includes the following steps:

[0045] (S1) Preparation of microcapsule coating solutions of various colors

[0046] Prepare red, green, blue and black electrophoretic dispersions containing white charged particles respectively; respectively wrap the obtained electrophoretic dispersions into microcapsule display particles with a particle size of 70 μm; Coating; the organic polymer liquid is mixed with the microcapsule display particles of various colors to prepare a microcapsule coating solution with a certain viscosity. The viscosity of the microcapsule coating solution is adjusted by the viscosity of the organic polymer solution and the percentage of the total coating solution. , the organic polymer liquid is a water-based photocurable resin;

[0047] (S2) Making a graphic mold;

[0048] Prepare a patterned mold by photolithography. First, spin-coat S...

Embodiment 2

[0073] The difference between this example and Example 1 is that the electrophoretic dispersions of various colors are respectively wrapped into microcapsule display particles with a particle size of 10 μm; the square pattern has a side length of 200 μm and a height of 10 μm; the remaining steps and parameter settings are the same Example 1 is the same.

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Abstract

The invention discloses preparing method of colorful electrophoresis display membrane material and application of transfer technique. Through a transfer seal with surface patterning, assorted microcapsules being coated on are transferred to a temporary substrate by successively using transfer technique. By way of precisely contraposition nesting through the temporary substrate, assorted microcapsule films are transferred to a target substrate. First, it is proved that using intaglio plate transfer technique to make colorful electrophoresis display membrane material has the advantage of higher implementation. Polydimethysiloxane is preferably chosen as transfer materials with resiliently flexible materials of low surface energy. Capsule layers can be completely transferred by means of adhesive. And the invention can be embedded in volume to volume processing procedure, accomplishing scale production. Colorful electrophoresis display membrane material made by this method has the advantage of high reflectivity, color contrast width and being embedded in volume to volume processing procedure. The preparing technology is simple and it is capable of achieving industrialized production.

Description

technical field [0001] The invention relates to the field of electrophoretic display, more specifically, to a preparation method of a color electrophoretic display film material and the application of transfer printing technology therein. Background technique [0002] Electrophoretic display technology (EFD) is one of the electronic display technologies with development potential due to the combination of the advantages of ordinary paper and electronic display. Electrophoretic displays are usually dual-color displays, which can only display two different colors. Therefore, the development of color electrophoretic display technology can not only meet people's demand for colorization, but also has great economic benefits, and color electronic paper is coming out soon. [0003] At present, the realization of colorization of electrophoretic display mainly includes: [0004] 1. Color filter film; 2. Control the electrophoretic speed of different pigments; 3. Add sub-pixels. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/16757
CPCG02F1/167G02F1/1681
Inventor 杨柏儒王力邓少芝王毓成陈鹏谢汉萍
Owner SUN YAT SEN UNIV
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