Photomask for photo-alignment and photo-alignment method

Abstract

The invention provides a photomask for photo alignment and a photo-alignment method. The photomask for photo alignment comprises a photomask body (2) and a plurality of light-transmitting patterns arranged on the photomask body (2), wherein the plurality of light-transmitting patterns are arrayed along the first direction (DY) line by line and are arranged along the second direction (DX) perpendicular to the first direction (DY); each light-transmitting pattern comprises a non-overlapping domain and overlapping domains, and the non-overlapping domain is not overlapped with adjacent photomasks during use; the overlapping domains are respectively positioned on the left side and the right side of the non-overlapping domain and are overlapped with the adjacent photomasks during use; the first direction (DY) is the translation forward direction of the photomask when the phototmask is used for exposure and alignment; one ends, towards the first direction (DY), of the light-transmitting patterns positioned in the overlapping domains are aligned to one ends, towards the first direction (DY), of the light-transmitting patterns positioned in the non-overlapping domain, so that the alignment effect can be improved, and the mura problem due to the fact that the unexposed domains or insufficiently-exposed domains exist when MMG products are aligned is avoided.

Description

technical field [0001] The invention relates to the manufacturing field of liquid crystal displays, in particular to a photomask for photo-alignment and a photo-alignment method. Background technique [0002] Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, and no radiation, and has been widely used, such as LCD TV, mobile phone, personal digital assistant, digital camera, computer screen or notebook computer screen, etc. . [0003] Most of the existing liquid crystal displays are backlight liquid crystal displays, which include a housing, a liquid crystal panel disposed in the housing, and a backlight module disposed in the housing. Generally, a liquid crystal panel is composed of a color filter substrate (Color Filter, CF), a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate), and a liquid crystal layer (Liquid Crystal Layer) filled between the two substrates. , its working principle is to con...

AI Technical Summary

Problems solved by technology

[0014] It can be seen that the above-mentioned existing photomasks and photoalignment methods for photoalignment are likely to cause spots and uneven display on MMG products, and need to be improved.

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