LCD panel and its uv 2 a alignment method

Abstract

The invention provides a liquid crystal display panel and a UV2A alignment method thereof. The liquid crystal display panel adopts a UV2A alignment technology for alignment and comprises a plurality of pixel units arranged in an arrayed mode. Each pixel unit comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are sequentially arranged in the row direction, wherein the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel form an alignment region, the alignment directions of the alignment regions corresponding to the two adjacent sub-pixels are perpendicular, and the alignment directions of the alignment regions corresponding to the sub-pixels which are located on the same row and are of the same color are the same; by additionally arranging the fourth sub-pixels, the alignment directions of the alignment regions corresponding to the sub-pixels which are located on the same row and are of the same color in the liquid crystal display panel are the same through UV2A alignment, the phenomenon of lattice shaped brightness unevenness appearing in a display frame is avoided, and the display quality is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal display panel and its UV 2 A alignment method. Background technique [0002] Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, low radiation, etc., 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 display panel disposed in the housing, and a backlight module disposed in the housing. Generally, a liquid crystal display panel is composed of a color filter substrate (ColorFilter, CF), a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFTArray Substrate), and a liquid crystal layer (Liquid Crystal Layer) filled between the two substrates. Its working principle is to cont...

AI Technical Summary

Problems solved by technology

[0006] but the existing UV 2 In order to improve color shift in A-aligned liquid crystal display panels, most of them still adopt 4-domain structure (4domain), that is, each sub-pixel is divided into four alignment sub-regions of the same size, and the gap between two adjacent alignment sub-regions in the same sub-pixel is The alignment directions of each sub-pixel are perpendicular to each other. This 4-domain structure will form a cross pattern at the junction of the four alignment sub-regions of each sub-pixel, which affects the light transmittance.

In order to improve the problem of the above-mentioned dark cross pattern, the prior art also proposes a single domain structure (1 domain), that is, only one alignment region is formed in a sub-pixel, and the alignment of the alignment regions corresponding to two adjacent sub-pixels is The directions are perpendicular to each other, and the four adjacent sub-pixels cooperate to achieve the same effect of improving color shift as the 4-domain structure. However, although this single-domain structure can reduce cross dark lines and improve light transmittance, it still has shortcomings. :like figure 1 As shown, in the existing liquid crystal display panel with a single domain structure, each row of sub-pixels includes red sub-pixels 101, green sub-pixels 102, and blue sub-pixels 103 that are alternately and repeatedly arranged in sequence, and those located in the same row and adjacent to the same The sub-pixels of the colors are aligned in different directions, e.g. figure 1 The alignment directions of the first red sub-pixel 101 in the first row and the second red sub-pixel 101 in the first row are different (perpendicular to each other), which will lead to a large difference between the brightness and darkness of the sub-pixels of the same color in the same row. When displaying detailed pictures, the picture quality will be distributed in a grid pattern, which will affect the picture quality

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