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Alignment film and preparation method thereof, display panel and display device

A technology for display panels and alignment films, applied in chemical instruments and methods, instruments, liquid crystal materials, etc., can solve problems such as inability to eliminate afterimages, and achieve the effects of eliminating afterimages, reducing accumulation, and solving afterimage problems.

Inactive Publication Date: 2016-03-30
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that the existing display panel cannot eliminate the residual image that occurs during display, and provides an alignment film that can effectively eliminate the residual image that occurs during display, a preparation method thereof, a display panel, and a display device

Method used

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  • Alignment film and preparation method thereof, display panel and display device
  • Alignment film and preparation method thereof, display panel and display device
  • Alignment film and preparation method thereof, display panel and display device

Examples

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Embodiment 1

[0026] Please refer to figure 1 and figure 2 , This embodiment provides an alignment film, including a functional material produced by alcoholysis of polyimide and a trapping monomer, and the functional material is used to generate functional free radicals capable of trapping ionic impurities.

[0027] Wherein, the structural formula of the capture monomer is:

[0028] Among them, the structural formula of the functional material is in, is a group derived from polyimide.

[0029] Such as figure 1 The shown polyimide and capture monomer undergo alcoholysis reaction to generate functional groups. When polyimide and capture monomer react, the amide bond in polyimide The C-N bond of the figure 1 The chemical bond broken by the dashed line in the polyimide structure in the middle); capture monomer There are alcoholic hydroxyl groups in the structure, and when reacting with polyimide, the O-H bond in the alcoholic hydroxyl groups is broken (ie figure 1 The chemical bo...

Embodiment 2

[0039] Please refer to image 3 , this embodiment provides a method for preparing an alignment film, the alignment film is the alignment film described in Example 1, and the preparation method includes:

[0040] Step 101, alcoholysis reaction of polyimide and capture monomer to generate functional material.

[0041] Specifically, such as figure 1 The shown polyimide and capture monomer undergo alcoholysis reaction to generate functional groups. When polyimide and capture monomer react, the amide bond in polyimide The C-N bond of the figure 1 The chemical bond broken by the dashed line in the polyimide structure in the middle); capture monomer There are alcoholic hydroxyl groups in the structure, and when reacting with polyimide, the O-H bond in the alcoholic hydroxyl groups is broken (ie figure 1 The chemical bond broken by the dotted line in the capture monomer structure), that is to say, when the polyimide and the capture monomer undergo alcoholysis reaction, the polyi...

Embodiment 3

[0045] This embodiment provides a display panel, including the alignment film described in Embodiment 1, the alignment film is used to capture ion impurities when the display panel is displaying, and when the display panel finishes displaying The ionic impurities are separated.

[0046] Among them, ionic impurities include impurities introduced by alignment film materials, liquid crystal materials and color filters that affect display effects.

[0047] Specifically, the ionic impurities themselves refer to the impurities that have an impact on afterimages brought by the image film materials, liquid crystal materials, and resins used in color filters, such as -C produced by the decomposition of liquid crystal itself. 3 h 7 base, -CH 2 base, -F base, etc., as well as the protective layer in the color film, the black matrix, and the Na + , Cl - Plasma.

[0048] Please refer to Figure 4 , where, with R 2 Indicates ionic impurities. When the functional free radicals in the ...

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Abstract

The invention provides an alignment film and a preparation method thereof, a display panel and a display device, which belong to the technical field of display and aim to solve the problem that residual images which occur during display cannot be eliminated in an existing display panel. The alignment film comprises a functional material, wherein the functional material is formed in a way that polyimide reacts with captured monomers in an alcoholysis mode, and the functional material is used for generating functional free radicals which can capture ion impurities.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to an alignment film and a preparation method thereof, a display panel and a display device. Background technique [0002] In recent years, liquid crystal displays have been popularized continuously due to their advantages such as low operating voltage, low power consumption, low radiation, and light and thin appearance, and have become the mainstream of the display market. With the continuous improvement of people's awareness level and display requirements, higher and higher requirements are put forward for display performance, such as high brightness, high contrast, high response speed, etc. ), image retention and other quality requirements are becoming more and more stringent, and image retention has always been a major problem that needs to be solved urgently in the thin film transistor-liquid crystal display (TFT-LCD) industry. Image retention has a serious impact ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337C09K19/56
CPCC09K19/542C09K19/56G02F1/133723C08G73/10G02F1/133397
Inventor 张波谭聪栗芳芳詹成勇
Owner BOE TECH GRP CO LTD
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