Thin film transistor array substrate, manufacturing method and display device

Abstract

The invention provides a thin film transistor array substrate. The thin film transistor array substrate comprises a substrate body, a plurality of thin film transistors and a plurality of opening areas, wherein the thin film transistors are formed on the substrate body and arrayed in a grid mode. The thin film transistor array substrate further comprises a first insulating protective layer, a color film layer, pixel electrodes, a common electrode, a second insulating protective layer, a via hole, an insulating layer and a black matrix, the first insulating protective layer is formed on the thin film transistors and the opening areas, each thin film transistor comprises a grid electrode and a drain electrode, the pixel electrodes are connected with the drain electrodes through the via hole, and the black matrix is located on the insulating layer or the pixel electrodes and the insulating layer and used for shielding the thin film transistors and the via hole. The invention further provides a display device and a manufacturing method of the thin film transistor array substrate.

Description

technical field [0001] The invention relates to the field of liquid crystal display manufacturing of thin film transistors, in particular to a thin film transistor array substrate, a manufacturing method of the thin film transistor array substrate and a display device with the thin film transistor array substrate. Background technique [0002] With the advancement of science and technology, liquid crystal display devices are developing towards high transmittance, high resolution, low power consumption and other directions. Among them, the higher the resolution, the smaller the size of each color filter layer. When the side length of the color filter layer changes from tens of microns to more than ten microns, obviously, the size of the color filter layer has been greatly reduced. , at this time, if the width of the black matrix dividing the color filter layer remains unchanged, the black matrix will become obvious relative to the color filter layer, which will affect the dis...

AI Technical Summary

Problems solved by technology

[0004] However, the traditional COA black matrix is ​​usually located between the drain of the thin film transistor and the pixel electrode. In order to realize the electrical connection between the drain and the pixel electrode, it is necessary to form a via hole in the black matrix, which will affect the black matrix to the drain. The shading effect of the pole causes the drain to reflect the light from the side of the via hole, which reduces the display effect of the display device

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