Device for repairing liquid crystal alignment film and method for repairing liquid crystal alignment film

Abstract

The invention discloses a device for repairing a liquid crystal alignment film. The device comprises a cleaning member and a drying member, the cleaning member comprises a liquid supply rotating member, a traveling rotating member, and an alignment film cleaning conveyor belt, and the liquid supply rotating member and the traveling rotating member are driven to cause the alignment film cleaning conveyor belt to move along a cleaning conveying path, so as to wipe off excessive alignment films on a substrate through alignment film cleaning liquid contained on the alignment film cleaning conveyorbelt. The drying member comprises a traveling rotating member and a residual liquid cleaning conveyor belt, and the traveling rotating member is driven to cause the residual liquid cleaning conveyorbelt to move along the cleaning conveying path to absorb the residual alignment film cleaning liquid on the substrate through the residual liquid cleaning conveyor belt. Therefore, an area with abnormal precision on the substrate can not only be repaired, and the repair of the alignment film is better simplified.

Description

technical field [0001] The present invention relates to a repairing device, in particular to a repairing device for a liquid crystal alignment film and a method for repairing a liquid crystal alignment film Background technique [0002] In thin film transistors, the polyimide liquid is baked and solidified to form a polyimide liquid film on the glass substrate, that is, an alignment film. The film formation of polyimide film has to go through the processes of polyimide film cleaning machine before coating, polyimide film coating machine, conveyor and rotating machine, pre-baking oven and other processes, and quality inspection is done on the inspection machine. Bad points can be repaired by patching machine. [0003] In actual use, due to many reasons, for example, in terms of equipment: the cleaning machine before coating the polyimide film is not dry after the process, which leads to abnormal diffusion of the polyimide liquid; the precision error of the polyimide film coa...

AI Technical Summary

Problems solved by technology

However, this method will lead to prolongation of product production cycle and increase of consumables (such as: polyimide liquid, N-methyl-2-pyrrolidone), and may cause other adverse situations

[0005] At present, the repair machine can only repair some defects, such as mura, and the defect area is generally less than 1*1 mm. For the defects of abnormal polyimide film accuracy, the area can generally reach 10*1 mm or more, but it cannot be processed

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