LCD screen manufacturing technology making PI liquid and spacer mixed

Abstract

The invention discloses an LCD screen manufacturing technology making PI liquid and spacer mixed and belongs to the field of LCD production. The technology comprises the following steps that pretreatment is conducted, wherein the processes of first cleaning, resist coating, exposure, development, hardening, etching, stripping and second cleaning are conducted in sequence, and an ITO glass substrate is obtained; PI is dipped and cured, wherein the PI is dipped and then cured on the ITO glass substrate, and dipping and curing are completed; after-treatment is conducted, wherein the processes of PI rubbing, box printing, dot printing, combination of box printing and dot printing, cutting and liquid crystal injection are conducted in sequence, and an LCD screen is obtained. In the technology, the step of PI dipping comprises the steps that the PI liquid and the spacer are mixed two times and the PI is infiltrated, and the step of PI curing comprises the steps of PI pre-curing and main curing of the PI. According to the technology, in the PI dipping process, the spacer and the PI liquid are mixed two times, and the spacer is fixed into the PI liquid after pre-curing and main curing, so that the mixing effect is ensured; while the production rate of degraded products is reduced, the consumption of the spacer is reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of LCD production, and specifically relates to a manufacturing process of LCD display screens in which PI liquid and intermediate powder are mixed. Background technique [0002] With the advancement of science and technology, the application fields of liquid crystal displays are becoming more and more extensive, the competition in the industry is becoming increasingly fierce, and the requirements for the appearance and quality of products are getting higher and higher. The third smallest LCD is widely used. However, because of its 10um box thickness, the current normal process sprays the intermediate powder on the cured PI layer. The intermediate powder is vacuumed and inflated during cutting and cleaning, and the ultrasonic vibration causes the intermediate powder to shift. Polymerization causes poor LCD appearance and seriously affects the appearance quality. At present, many material manufacturers are vigorously r...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is: the present invention provides a kind of LCD display screen manufacturing process that PI liquid and intermediate powder are mixed, improve mixing effect by mixing intermediate powder and PI liquid twice, curing PI is divided into pre-cured PI and main Curing PI to ensure the mixing effect solves the problem of poor mixing effect and high productivity of defective products in the existing process of spin-coating spacer particles in PI liquid, achieving excellent mixing effect, reducing the productivity of defective products and reducing the amount of intermediate powder at the same time. cost reduction effect

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