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A mixed acid pre-cleaning solution for high-generation plate thinning

A generation of plate, pre-cleaning technology, applied in the direction of detergent composition, soap detergent composition, non-surface active detergent composition, etc., can solve the problems of poor solubility and inability to use pre-treatment cleaning, etc.

Active Publication Date: 2018-11-23
JIANGYIN JIANGHUA MICROELECTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, alcohol solvents are less capable of dissolving inorganic substances than alkaline solutions, so they cannot be used for basic pre-treatment cleaning of glass

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The mixed acid pre-cleaning solution for high-generation plate thinning of embodiment 1, the components include by weight percentage: 50% by weight of sulfuric acid, 18% by weight of phosphoric acid, 2% by weight of hydrochloric acid, 7% by weight of nitric acid and the balance of water ;

Embodiment 2

[0021] The difference between embodiment 2 and embodiment 1 is that the components of the cleaning solution in embodiment 2 include by weight percentage: the sulfuric acid of 80% by weight, the phosphoric acid of 5% by weight, the chlorinated salt of 0.5% by weight, the nitric acid of 1% by weight and The remainder is water; the chloride salt is sodium chloride.

Embodiment 3

[0023] The difference between embodiment 3 and embodiment 1 is that the components of the cleaning solution in embodiment 3 include by weight percentage: the sulfuric acid of 72% by weight, the phosphoric acid of 9% by weight, the chlorinated salt of 0.01% by weight, the nitric acid of 5% by weight and The balance of water; the chloride salt is a 1:1 mixture of potassium chloride and ammonium chloride.

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PUM

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Abstract

The invention discloses mixed acid pre-cleaning liquid for thinning a high-generation panel. The mixed acid pre-cleaning liquid is prepared from the components in percentage by weight: 50 to 80 percent of sulfuric acid, 5 to 18 percent of phosphoric acid, 0.01 to 2 percent of hydrochloric acid and / or soluble chloride salt, 1 to 7 percent of nitric acid and the balance of water, wherein the soluble chloride salt is at least one selected from sodium chloride, potassium chloride and ammonium chloride. The mixed acid pre-cleaning liquid for thinning the high-generation panel, disclosed by the invention, is prepared by adopting and mixing the sulfuric acid, the phosphoric acid, the hydrochloric acid and / or soluble chloride salt, the nitric acid and the water; since the sulfuric acid has certain dissolving capacity on some inorganic and organic compounds, dust, fingerprints and the like on the surface of a glass substrate can be effectively removed; by regulating the concentrations of the sulfuric acid, the phosphoric acid, the nitric acid and the hydrochloric acid and / or soluble chloride salt, the dissolving speed of the sulfuric acid on curing glue can be controlled.

Description

technical field [0001] The invention relates to a cleaning liquid composition for pre-cleaning before glass thinning, in particular to a mixed acid pre-cleaning liquid for high-generation plate thinning. Background technique [0002] In order to make the thickness of the LCD screen of the tablet computer meet the market demand for thinning, it is necessary to polarize the glass substrate. The thinning process generally includes three steps of sealing, thinning and grinding. Specifically, since the liquid crystal glass screen is made of double-sided bonding, the main body of the mixed acid for thinning is hydrofluoric acid, and hydrofluoric acid will enter the liquid crystal screen through the gap of the liquid crystal glass screen, resulting in an increase in the scrap rate of thinning. Therefore, it is necessary to use photocurable edge sealant to seal the four sides of the liquid crystal glass before etching; the thinning process includes a pre-cleaning unit, an etching u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D7/60C11D7/08C11D7/10C11D7/26C11D10/02
Inventor 邵勇殷福华栾成赵文虎李英朱龙顾玲燕
Owner JIANGYIN JIANGHUA MICROELECTRONICS MATERIAL
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