Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Alignment film, preparation method and display device thereof

An alignment film and mask technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of excessive edge position deviation, low precision, large error, etc., reduce the factors of error formation, and achieve high alignment accuracy , the effect of simple equipment

Inactive Publication Date: 2019-05-14
BOE TECH GRP CO LTD +1
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above two methods of forming the alignment film are prone to the problem of excessive or small edge position deviation, large error and low precision.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Alignment film, preparation method and display device thereof
  • Alignment film, preparation method and display device thereof
  • Alignment film, preparation method and display device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] In order to further understand the present invention, the preferred embodiments of the present invention are described below in conjunction with examples, but it should be understood that these descriptions are only to further illustrate the features and advantages of the present invention, rather than limit the present invention.

[0031] In the prior art, in the method for forming an alignment film, the coating machine coating (coater) formula is as follows figure 1 Injection type shown as figure 2 shown. The edge position deviation (Edge Margin, EM for short) of the alignment film prepared by the coater method depends on the accuracy of the printing plate of the alignment film, the alignment accuracy of the substrate, and the control of the press-in amount. Under the existing equipment conditions, the accuracy is generally ±500um. The deviation of the edge position of the alignment film prepared by spraying has a lot to do with the droplet diffusion. Under the co...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Wavelengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of display, and particularly relates to an alignment film, a preparation method and a display device thereof. The preparation method of the alignment film comprisessteps of (A) adding a photolysis agent or a light curing agent to a polyimide solution, so as to form a mixed solution; (B) spreading the mixed solution onto a substrate, so as to form a polyimide composite film; and (C) covering the polyimide composite film with a mask film, exposing, then submerging the film into an alkali solution to dissolve the polyimide composite film partially, so as to form a patterned alignment film. In the method, the photolysis agent or light curing agent is added to the polyimide solution, then the polyimide composite film is formed, and then is exposed so as to remove a composite film in a non-display area, then the patterned alignment film is obtained. The related device is simple and has high alignment accuracy, so that error causes are reduced fundamentally, over large or small edge deflection is prevented, and the alignment film is prepared more accurately and the prepared alignment film has high yield.

Description

technical field [0001] The invention relates to the display field, in particular to an alignment film, a preparation method thereof and a display device. Background technique [0002] In the structural material of the liquid crystal display, the liquid crystal alignment film is in contact with the liquid crystal molecules, so as to align the liquid crystal molecules uniformly. The liquid crystal alignment film is the core material for driving the liquid crystal, so that the liquid crystal is uniformly aligned to one side, so that the liquid crystal can perform the switching function of polarized light well, and the liquid crystal alignment characteristics of the liquid crystal alignment film and the electrical characteristics of the film will determine the performance of the liquid crystal display. Display quality. [0003] As the material of the alignment film, polyimide with low dielectric constant, high thermal stability, excellent mechanical strength, and excellent manu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G02F1/1337
Inventor 赵永亮王兆君黄中浩王洋
Owner BOE TECH GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com