Single-sided thinning treatment method for liquid crystal display screen

Abstract

The invention discloses a single-side thinning treatment method for a liquid crystal display screen. The single-side thinning treatment method comprises the following steps of material preparation, glass substrate cleaning, curing and edge sealing, pretreatment, chemical etching and thinning, cleaning and air drying, physical polishing, cleaning and quality evaluation. According to the invention,cleaning liquid prepared from acetone, ethanol and pure water is used for cleaning a glass substrate so as to remove dust and grease; the glass substrate is soaked with a prepared pretreatment solution, tiny concave points on the surface of the glass are filled with sodium hydroxide and sodium bicarbonate, and the sodium hydroxide and sodium bicarbonate are combined with silicon-oxygen bonds on the surface of the glass, so the glass substrate is prevented from generating cracks in subsequent processing; sodium perchlorate and disodium ethylenediaminetetraacetate in a thinning etching solutionare matched with pyrethroid and hydrogen peroxide, so the viscosity of the thinning etching solution is increased, which is beneficial for realizing uniform etching and reducing the generation of concave-convex points; and meanwhile, the glass substrate obliquely leans against the interior of the etching groove in the etching process, and single-face processing is facilitated through circulating waterfall type flow guide of the thinning etching solution.

Description

technical field [0001] The invention relates to the technical field of display screen thinning, in particular to a method for thinning a single side of a liquid crystal display screen. Background technique [0002] At present, the mainstream display screen thinning process is divided into two categories. One is the physical thinning method, which mainly uses the friction between the display glass substrate and the grinding powder to achieve the purpose of glass thinning. This method has poor accuracy. control, and it takes a long time and has a low yield; the second method is the chemical thinning method, which uses the interaction between the display glass substrate and the etching solution to achieve the effect of chemical thinning. This method reduces the time Short, low equipment investment, high product yield, and the composition of the thinning liquid is simple and low in cost, gradually becoming the mainstream technical method for display glass substrate thinning; ...

AI Technical Summary

Problems solved by technology

[0002] At present, the mainstream display screen thinning process is divided into two categories, one is the physical thinning method, which mainly uses the friction between the display glass substrate and the grinding powder to achieve the purpose of glass thinning, and the accuracy of this method is not good. Control, and it takes a long time and the yield is low; the second method is the chemical thinning method, which uses the interaction between the display glass substrate and the etching solution to achieve the effect of chemical thinning. This method reduces the time Short, low equipment investment, high product yield, and the composition of the thinning liquid is simple and low in cost, and has gradually become the mainstream technical method for display glass substrate thinning;

[0003] In the prior art, in terms of chemical thinning, hydrofluoric acid chemical solution is usually used to directly soak the glass substrate of the liquid crystal display. After thinning, pits or concave scratches appear on the surface of the liquid crystal display, which affects the quality of the product. Placed in the processing tank, it is impossible to control the thinning of one side. Therefore, the present invention proposes a thinning treatment method for one side of the liquid crystal display to solve the problems existing in the prior art

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