Preparation method and application of alignment film

Abstract

The invention provides a preparation method and application of alignment film. The method comprises the steps that a substrate is provided, wherein one surface of the substrate is provided with an alignment liquid zone and a heteromorphism zone, the heteromorphism zone is selected from at least one of a concave zone and a convex zone; an alignment liquid is sprayed on the alignment liquid zone toform alignment liquid film; the fluidity of the alignment liquid around the heteromorphism zone is adjusted, so that the alignment liquid flows toward the heteromorphism zone and covers the heteromorphism zone or inhibits the flow of the alignment liquid toward the heteromorphism zone; solidification treatment is carried out on the alignment liquid. Inventors find that by adjusting the fluidity ofthe alignment liquid around the heteromorphism zone, the heteromorphism zone can be completely covered by the alignment liquid, or the heteromorphism zone cannot be completely covered by the alignment liquid at all, thereby, after the alignment liquid is solidified, the phenomenon of uneven alignment film surface does not exist, finally the display quality of a display device using the substrateis improved; the production method is simple, the operation is easy, the equipment is easy, the cost is low, and the industrial production is easy.

Description

technical field [0001] The present invention relates to the field of display technology, and in particular, relates to a manufacturing method and application of an alignment film. Background technique [0002] At present, in TFT-LCD liquid crystal panels, the coating methods of alignment liquid (PI) mainly include APR plate transfer (Coater) and inkjet printing (Inkjet). Among them, the takt time of Coater coating method (Tact time) Longer, low utilization rate of alignment liquid, complicated equipment, and cumbersome switching of coating products; compared with Coater coating method, although Inkjet coating method has lower Tact time and better utilization rate of alignment liquid, It has the advantages of simple equipment and easier product switching. However, due to the uneven diffusion of the alignment liquid and other film surface problems, it has not completely replaced the Coater coating method. Especially for organic film products and high-resolution products, the f...

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Problems solved by technology

[0002] At present, in TFT-LCD liquid crystal panels, the coating methods of alignment liquid (PI) mainly include APR plate transfer (Coater) and inkjet printing (Inkjet). Among them, the takt time of Coater coating method (Tact time) Longer, low utilization rate of alignment liquid, complicated equipment, and cumbersome switching of coating products; compared with Coater coating method, although Inkjet coating method has lower Tact time and better utilization rate of alignment liquid, It has the advantages of simple equipment and easier product switching. However, due to the uneven diffusion of the alignment liquid and other film surface problems, it has not completely replaced the Coater coating method, especially for organic film products and high-resolution products. The film surface effect is not good.

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