Manufacturing method and production equipment for alignment film

Abstract

A manufacturing method for an alignment film is that UV lights of parallel light beams are converted into UV lights at a polarized state; the UV lights are irradiated to an ITO substrate containing nitrogen and benzene material to form the alignment film; a polarizing direction of the UV lights is the same as a twisting direction of liquid crystal molecules required by the alignment film; an included angle of 30 to 60 degrees is formed between the light beam direction of the UV lights and an ITO substrate plane; and exposure energy of the UV lights is 500 to 1,000 mJ. The manufacturing methodand production equipment for the alignment film for electrowelding arc can meet demands for PMVA displaying effects; stable and consistent performance can be achieved for products of the same batches;a yield rate can be improved by 10% and efficiency can be improved by 20% compared with a friction method.

Description

technical field [0001] The invention relates to the field of optics, in particular to a method for manufacturing an alignment film and production equipment thereof. Background technique [0002] PMVA (Passive Matrix Vertical Alignment, Passive Matrix Vertical Alignment) display device is an LCD display mode, and its rod-shaped liquid crystal molecules are arranged vertically to the alignment film, such as figure 1 As shown, the optical axes of the upper and lower polarizers of the display device form an included angle of 90 degrees. The liquid crystal layer is perpendicular to the electrodes from top to bottom without electricity: the liquid crystal layer does not generate rotating polarized light, because the angle between the optical axes of the upper and lower polarizers is 90 degrees, the light does not pass through, and the LCD background is black. Flip over, parallel to the electric field, the optical path difference of the liquid crystal layer just allows the polariz...

AI Technical Summary

Problems solved by technology

The vertical alignment performance requires high precision in the anchoring ability and pretilt angle of the alignment material. At present, the alignment film of the traditional LCD display device is rubbed with a wool cloth to produce the alignment ability. Precise control leads to uncontrollable rubbing depth and rubbing density, rubbing felt is easy to shed hair, and rubbing is easy to generate static electricity to damage the orientation film. Therefore, the rubbing process leads to low product yield, poor performance stability and consistency between batches, and repeated rework leads to low efficiency. low

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