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Manufacturing method of superthin liquid crystal box

A manufacturing method and liquid crystal cell technology, applied in the direction of instruments, nonlinear optics, optics, etc., can solve the problems of low yield rate and high process requirements, and achieve the effects of saving production costs, low process requirements, and cheap prices

Active Publication Date: 2007-12-19
深圳市合力泰光电有限公司
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  • Abstract
  • Description
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Problems solved by technology

[0006] The present invention proposes a method for making ultra-thin liquid crystal cells in order to solve the problems of high process requirements and low yield in the prior art

Method used

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  • Manufacturing method of superthin liquid crystal box
  • Manufacturing method of superthin liquid crystal box
  • Manufacturing method of superthin liquid crystal box

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Experimental program
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Effect test

Embodiment 1

[0040] Embodiment 1, as shown in Figure 1, the manufacturing method of ultra-thin liquid crystal cell comprises the following steps:

[0041] The first step is to clean the upper and lower transparent substrates 1 and 2 successively with acetone, ultrasonic waves, alcohol, pure water, brush, etc., to remove various harmful impurities or oil stains adsorbed on the surface of the transparent substrates, and to prevent contamination of the PI alignment layer and liquid crystal raw materials .

[0042] In the second step, apply photoresist on the transparent substrate, perform exposure after pre-curing, develop, and perform acid etching after curing (using the protective effect of photoresist, etching with a mixture of hydrochloric acid, nitric acid and pure water), engraving Produce required patterns such as dot matrix graphics and leads;

[0043] In addition, the exposure technology is used to produce the silk screen required to make the waterproof and acid-proof protective fra...

Embodiment 2

[0054] Embodiment 2, the difference from Embodiment 1 is that in step 7, the thickness after etching is set to 0.6mm, the thickness of the liquid crystal cell motherboard before chemical etching is 1.03mm, and the concentration percentage of chemical etchant is hydrofluoric acid 20%, 2% hydrochloric acid, 10% nitric acid, 0.5% surfactant, and pure water for the rest. The etching temperature is 22+ / -2 degrees. After 40 minutes of chemical etching, the thickness of the liquid crystal cell motherboard is reduced to 0.59mm. The etching results are shown in Table 1. The flatness (peak-trough) before etching is 0.080-0.075mm, and the flatness (peak-trough) after etching is 0.051-0.045mm. Therefore, after chemical etching, the high flatness of the transparent substrate is not affected. The degree can reach the technical requirement of + / -30um.

[0055] Compared with the existing ultra-thin liquid crystal manufacturing method, the method has the characteristics of low process requirem...

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Abstract

A method for preparing superthin liquid crystal box includes coating photoresist on transparent base plate and carrying out exposure and development as well as acid-etching in sequence, forming orientation layer, screen-printing glue line and conductive point as well as waterproof and anticorrosion protective line, fitting top and bottom said base plates to form liquid crystal box, curing screen-printed lines and points by high temperature and high pressure, using chemical corrosive agent to corrode liquid crystal box till required thickness of said base plate is realized in order to form superthin liquid crystal box.

Description

【Technical field】 [0001] The invention relates to a manufacturing method of a liquid crystal box. 【Background technique】 [0002] In order to further reduce the weight and save the utilization space of the circuit, it is necessary to make the liquid crystal display device thinner, and these are mainly used in ultra-thin mobile phones. [0003] To make ultra-thin liquid crystal display devices, it is necessary to make ultra-thin liquid crystal cells. At present, there are mainly two methods. [0004] The first method is to directly use ultra-thin transparent substrates to make liquid crystal cells, such as using 0.35mm or 0.3mm transparent substrates (ITO glass), and use normal liquid crystal production processes for production. The advantage of this production method is that the production process does not need to be changed, but this method has great limitations. First, for transparent substrate manufacturers, it is difficult to produce transparent substrates with a thickn...

Claims

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Application Information

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IPC IPC(8): G02F1/1333
Inventor 林秦李作坤何志奇
Owner 深圳市合力泰光电有限公司
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