VA-type COA liquid crystal display panel

Abstract

The invention provides a VA-type COA liquid crystal display panel. A first light shielding layer made of a red color resisting material or a blue color resisting material and a common electrode are correspondingly arranged over grid scanning lines, the common electrode is arranged over the first light shielding layer and electrically communicated with a public electrode layer arranged on an upper substrate to enable the voltage difference of the upper substrate and a lower substrate at the grid scanning lines to be zero, then the panel is in a normally black state at the grid scanning lines due to the fact that liquid crystals are not driven by the voltage difference and do not rotate, and therefore light shielding on the grid scanning lines is achieved; in addition, a second light shielding layer formed by stacking two of the red color resisting material, a green color resisting material and the blue color resisting material is correspondingly arranged over the data lines, and therefore light shielding on the data lines is achieved; accordingly, on the premise of ensuring the spacer elasticity compression amount and the panel box thickness, a black matrix arranged on the upper substrate is omitted, and the panel is high in aperture ratio, simple in manufacturing process and low in production cost.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a VA type COA liquid crystal display panel. 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 refracted to produce a picture. Among t...

AI Technical Summary

Problems solved by technology

And when the BM-Less technology is not suitable for the vertical alignment display mode, for the VA type liquid crystal display panel, generally in order to reduce the cost, the flat layer will not be covered on the color photoresist. At this time, if the gate control line The stacking method of red and blue resists is used for shading. The height of the gate control line will be about one color resist layer higher than that of the display pixel area. The height of the spacer will be shortened, and too short a columnar spacer will result in insufficient elastic compression, which will eventually lead to insufficient space for displaying liquid crystals and affect product yield.

Images