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Preparation technology for photolysis alignment film, liquid crystal display panel and device

A preparation process and alignment film technology, which is applied in optics, nonlinear optics, instruments, etc., can solve problems such as liquid crystal pollution, static electricity, alignment film and device adverse effects, and achieve the effect of improving contrast and preventing pollution

Active Publication Date: 2014-09-24
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also the following disadvantages at the same time: a large amount of dust particles are generated during the rubbing process, which will have a negative impact on the alignment film and the device, and require subsequent processing, which increases the process time and cost; Liquid crystal thin film transistors will cause breakdown; when applied to large-area substrates, it is difficult to control the uniformity of friction, etc.
[0005] There are three main types of photoalignment alignment films: photoisomerization, photopolymerization, and photodegradation. Among them, the photodegradation alignment film degrades after being irradiated with ultraviolet light, and the degraded small molecules are easy to cause damage to the alignment film. The pollution of the liquid crystal makes the characteristics of the flicker, flicker and afterimage of the screen worse

Method used

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  • Preparation technology for photolysis alignment film, liquid crystal display panel and device
  • Preparation technology for photolysis alignment film, liquid crystal display panel and device
  • Preparation technology for photolysis alignment film, liquid crystal display panel and device

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Embodiment 1

[0041] Embodiment 1 of the present invention provides a preparation process of a photodecomposition type alignment film, such as figure 1 shown, including the following steps:

[0042] Step 1: providing a first substrate, and forming a first conductive material on the first substrate;

[0043] Step 2: patterning the first conductive material to form a working electrode and a first connection pad;

[0044] Step 3: coating an alignment material on the working electrode;

[0045] Step 4: preheating the alignment material on the first substrate;

[0046] Step 5: irradiating the alignment material on the first substrate with ultraviolet light to obtain the first substrate formed with a photodecomposition type alignment film;

[0047] Step 6: Put the first substrate formed with the photodecomposition type alignment film into a cleaning tank, and an electrode plate is arranged in the cleaning tank;

[0048] The first substrate provided with the photodecomposition type alignment f...

Embodiment 2

[0091] In order to further understand the present invention, the preferred embodiments are listed below, the following preferred embodiments are just to illustrate the present invention, and the embodiments of the present invention are not limited to the following embodiments.

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Abstract

The invention discloses a preparation technology for a photolysis alignment film. An alignment material is firstly irradiated by ultraviolet; the light alignment film is then rinsed through the effect of an external electric field, and a substrate which is provided with a photolysis alignment film is put into a rinsing trough; a working electrode and a reference electrode of the substrate are arranged in the rinsing trough in a row manner, and are connected to the same power supply, and small molecules decomposed by the light alignment film are rinsed under the effect of the extra electric field. According to the preparation technology for the photolysis alignment film, a liquid crystal display panel and a liquid crystal display device, the small molecules decomposed by the light alignment film are prevented from polluting liquid crystal molecules, so that the contrast ratio of the liquid crystal display panel and the liquid crystal display device is improved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a preparation process of a photodecomposition type alignment film, and a liquid crystal display panel and device using the photodecomposition type alignment film. Background technique [0002] Liquid crystal display devices have the advantages of thinness, low power consumption and low radiation, and are widely used in various fields. The liquid crystal alignment technology involves the properties of the alignment layer material, the treatment method of the alignment layer surface, and the interaction at the interface. The properties of the liquid crystal alignment layer directly affect the arrangement of liquid crystal molecules on the surface of the substrate, thereby affecting the uniformity, color difference, contrast, threshold voltage, response time and viewing angle of the display. [0003] Liquid crystal alignment technology is a technology that aligns liq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337
Inventor 周波董倩辛胜
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD