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Composition for surface treatment of liquid crystal display glass substrate

A liquid crystal display and glass substrate technology, which is applied in the field of compositions used for surface treatment of liquid crystal display glass substrates, can solve the problems of difficult disposal and scrapping of waste liquid, and achieve the effect of reducing pits

Active Publication Date: 2018-10-23
赫得纳米科技(黄石)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the glass substrate has been packaged during the thinning process. Once serious over-etching occurs (often due to local micro-defects in the glass), it will cause the entire scrap. The yield rate of the liquid crystal screen needs to be pretreated before the thinning treatment. The existing pretreatment process is based on concentrated sulfuric acid and a small amount of hydrofluoric acid and hydrochloric acid are added to prepare the pretreatment solution. Due to the addition of a large amount of Concentrated sulfuric acid, the waste liquid generated after the pretreatment process is difficult to treat

Method used

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  • Composition for surface treatment of liquid crystal display glass substrate
  • Composition for surface treatment of liquid crystal display glass substrate

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Embodiment Construction

[0013] The composition provided by the invention for the surface treatment of liquid crystal display glass substrates is prepared in the following way,

[0014] 1) Mix the prescribed amount of hydrochloric acid and hydrofluoric acid, and add appropriate amount of water to dilute,

[0015] 2) Dissolve the prescribed amount of hydroxypropyl-β-cyclodextrin in an appropriate amount of water until completely dissolved, and then add the prescribed amount of polydimethylsiloxane;

[0016] 3) The prescription amount of oxalic acid is prepared into a 1% solution, and the prescription amount of chitosan is added and dissolved;

[0017] 3) Slowly add the mixed solution obtained in steps 1) and 2) into the mixed solution in step 3) respectively, make up the remaining amount of water and stir until mixed evenly.

[0018] Embodiment 1~4 formula sees the following table (mass percentage wt%)

[0019]

[0020] The chitosan used in the present invention is a product meeting GB 29941-2013....

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Abstract

The invention relates to a composition for processing the surface of a glass substrate of a liquid crystal display. The composition contains the following components in percentage by mass: 5%-8% of hydrochloric acid (HCl), 2%-5% of hydrofluoric acid (HF), 1%-2% of chitosan, 0.5%-1% of polydimethylsiloxane, 0.5%-1% of hydroxypropyl-beta-cyclodextrin 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] When thinning the liquid crystal display glass substrate, hydrofluoric acid etching is used for thinning, pits will appear on the surface of the glass substrate due to local over-etching, and long-term polishing is required. Moreover, the glass substrate has been packaged during the thinning process. Once serious over-etching occurs (often due to local micro-defects in the glass), it will cause the entire scrap. The yield rate of the liquid crystal screen needs to be pretreated before the thinning treatment. The existing pretreatment process is based on concentrated sulfuric acid and a small amount of hydrofluoric acid and hydrochloric acid are added to prepare the pretreatment solution. Due to the addition of a large amount of Concentrated sulfuric acid, the waste liquid generated after the pretreatment proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C15/00
CPCC03C15/00
Inventor 庞绮琪
Owner 赫得纳米科技(黄石)有限公司
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