Liquid crystal display screen glass base plate thinning process pretreatment composition

A liquid crystal display and glass substrate technology, applied in the field of liquid crystal display glass substrate thinning process pretreatment composition, can solve the problems of glass substrate scrapping and difficult disposal of waste liquid, etc.

Active Publication Date: 2017-05-10
江苏智光创业投资有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production of ultra-thin liquid crystal displays, it is necessary to carry out thinning treatment on the packaged glass substrate. In the prior art, hydrofluoric acid etching is generally used for thinning, which often produces local over-etching pits and requires a long time. Polishing treatment, serious even lead to the scrapping of the entire glass substrate
With the gradual increase in demand for ultra-thin TFT (Thin Film Transistor, thin film transistor), this problem has become more and more prominent in the production process of liquid crystal displays. To solve this problem, the prior art adopts pretreatment based on concentrated sulfuric acid. Before the thinning treatment, the glass substrate of the liquid crystal screen is pretreated. Due to the addition of a large amount of concentrated sulfuric acid, the waste liquid generated after the pretreatment process is difficult to process.

Method used

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  • Liquid crystal display screen glass base plate thinning process pretreatment composition
  • Liquid crystal display screen glass base plate thinning process pretreatment composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The liquid crystal display glass substrate thinning process pretreatment composition provided by the invention is prepared in the following way,

[0013] 1) Mix the prescribed amount of hydrochloric acid, hydrofluoric acid and nitric acid, and add appropriate amount of water to dilute,

[0014] 2) Dissolve the prescribed amount of HPMC in 30-40% of the prescribed amount of water, add the prescribed amount of Tween-80,

[0015] 3) Dissolve the prescribed amount of Carbomer 940 in an appropriate amount of water;

[0016] 4) In the mixed solution of step 2), slowly add the mixed solution of step 1) under vigorous stirring, and then add the mixed solution of step 3), make up the remaining water and stir until mixed evenly.

[0017] Embodiment 1~4 formula sees the following table (mass percentage wt%)

[0018]

[0019] The method for thinning pretreatment of the compositions obtained in Examples 1 to 4 is as follows

[0020] The raw materials used are the same batch of...

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Abstract

The invention relates to a liquid crystal display screen glass base plate thinning process pretreatment composition, which is prepared from the following ingredients in percentage by mass: 5 to 8 percent by mass of HCl (hydrochloric acid), 5 to 8 percent by mass of HNO3 (nitric acid), 2 to 5 percent by mass of HF (hydrofluoric acid), 1 to 2 percent by mass of Tween-80, 0.2 to 0.4 percent by mass of carbomer 940, 1 to 2 percent by mass of HPMC (hydroxypropyl methylcellulose) and the balance of water.

Description

technical field [0001] The invention relates to a composition used for etching pretreatment of liquid crystal display glass substrates. Background technique [0002] In the production of ultra-thin liquid crystal displays, it is necessary to carry out thinning treatment on the packaged glass substrate. In the prior art, hydrofluoric acid etching is generally used for thinning, which often produces local over-etching pits and requires a long time. Polishing treatment can even cause the entire glass substrate to be scrapped. With the gradual increase in demand for ultra-thin TFT (Thin Film Transistor, thin film transistor), this problem has become more and more prominent in the production process of liquid crystal displays. To solve this problem, the prior art adopts pretreatment based on concentrated sulfuric acid. Before the thinning treatment, the liquid crystal glass substrate is pretreated. Due to the addition of a large amount of concentrated sulfuric acid, the waste li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C15/00
CPCC03C15/00
Inventor 庞绮琪
Owner 江苏智光创业投资有限公司
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