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Coa type liquid crystal display panel and manufacturing method thereof

A technology of liquid crystal display panel and manufacturing method, which is applied in the direction of instruments, nonlinear optics, optics, etc., can solve the problems of poor product color performance, large chromaticity difference between the center position and edge position of sub-pixels, etc., and achieve uniform chromaticity , Improve color performance and improve product yield

Active Publication Date: 2020-03-17
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

[0004] Due to the leveling problem of the photoresist, the graphics of the sub-pixels in the actual production are concave (bowlshape), and the amplitude of the depression exceeds 0.5um, resulting in a large difference in chromaticity between the center position and the edge position of the sub-pixel, which is greater than 0.004. The specification is ±0.002, resulting in poor color performance of the product

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  • Coa type liquid crystal display panel and manufacturing method thereof
  • Coa type liquid crystal display panel and manufacturing method thereof
  • Coa type liquid crystal display panel and manufacturing method thereof

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[0020] The COA type liquid crystal display panel and the manufacturing method thereof provided by the present invention will be described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0021] COA (Color filter On Array) technology is a technology in which the color resist layer on the color filter substrate is prepared on the TFT array substrate, that is, the color filter layer and the TFT array layer are arranged on the same side. The COA structure reduces the coupling between the pixel electrode and the metal trace, and the signal delay on the metal trace is improved. The COA structure can significantly reduce the...

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Abstract

The invention discloses a COA-type liquid crystal display panel and a production method thereof. The method comprises the following steps: configuring a passivation layer with a concave-convex structure at the position where a blue sub-pixel photoresist film is relatively thick such that blue light in a zone scatters. Therefore, the purpose of uniform chromaticity is fulfilled, color expressions of products are improved, the yield of a product is increased and the product structure is optimized.

Description

Technical field [0001] The present invention relates to the field of liquid crystal display technology, in particular to a COA type liquid crystal display panel and a manufacturing method thereof. 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 (PDA), digital camera, computer screen or laptop screen, etc. [0003] Generally, a liquid crystal display device includes a housing, a liquid crystal display panel arranged in the housing, and a backlight module arranged in the housing. The structure of TFT-LCD (thin film transistor liquid crystal display panel) is mainly composed of a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT array substrate), a color filter (Color Filter, CF) substrate, and two substrates The working principle of the liquid crystal layer (Liquid Crystal Layer) is to con...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335G02F1/1333
CPCG02F1/1333G02F1/133514
Inventor 宋江江
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD