Liquid crystal display panel and manufacturing method thereof

Abstract

The invention provides a liquid crystal display panel and a manufacturing method thereof.The liquid crystal display panel is of a COA-type structure, a color light filter layer comprises a plurality of color stopping units connected in sequence, every two adjacent color stopping units are partially superposed at the junction position, a passivation layer on the color light filter layer is provided with holes at the upper portions of the superposed positions of the corresponding every two adjacent color stopping units, accordingly micro-molecular gas in the color light filter layer can be released out in the manufacturing process of the passivation layer and the follow-up manufacturing process of transparent conductive layer crystals, the risk of color stopping bubbles is reduced, meanwhile the heights of the superposed positions of color stopping are decreased, the flatness is improved, and the higher product yield is obtained.According to the manufacturing method of the liquid crystal display panel, the holes are formed in the upper portions of the superposed positions of every two adjacent color stopping units, corresponding to the inside of the color light filter layer, on the passivation layer, the risk of color stopping bubbles is reduced on the premise that the manufacturing process and the cost are not increased additionally, meanwhile the heights of the superposed positions of color stopping are decreased, the improvement of the flatness is promoted, and the product yield is improved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a liquid crystal display panel and a manufacturing method thereof. Background technique [0002] A liquid crystal display (Liquid Crystal Display, LCD) is one of the most widely used flat panel displays at present, and a liquid crystal panel is a core component of the liquid crystal display. [0003] A traditional liquid crystal panel is usually composed of a color filter (ColorFilter, CF) substrate, a thin film transistor array substrate (ThinFilmTransistorArraySubstrate, TFTArraySubstrate), and a liquid crystal layer (LiquidCrystalLayer) arranged between the two substrates. Liquid crystal molecules are placed between two parallel glass substrates. There are many small vertical and horizontal wires between the two glass substrates. The direction of the liquid crystal molecules is controlled by electrifying or not, and the light from the backlight module is refract...

AI Technical Summary

Problems solved by technology

[0005] The main material of the color filter layer 130' is an organic substance. In the prior art, when the color filter layer 130' is manufactured, gas may remain inside it. In a high temperature environment, or when the display is in a vibrating working state, the inside of the color filter layer 130' will slowly release small molecular carbon oxide gases, such as CO, CO 2 etc. After these small molecular gases are generated, they will penetrate the passivation layer on the surface of the color filter layer 130', the first transparent conductive thin layer 140', and the lower alignment film 150', and enter between the lower substrate 100' and the upper substrate 200'. In the interlayer between the liquid crystal layer 300', bubbles are formed locally, which will affect the display effect and reduce the product yield.

[0006] At present, there are mainly two methods to improve the adverse effects of bubbles caused by color resistance. One is to adjust the material of the color filter layer. This method is difficult to process, and the production cost is high and the cycle is long; the other is The method is to perform vacuum heat treatment on the lower TFT array substrate after the process of the transparent conductive layer is completed, so that the small molecules in the color resist material are released. This method increases the production cost and cannot fundamentally eliminate the problem of air bubbles

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