TFT (Thin Film Transistor) array substrate, manufacturing method thereof, and display device

Abstract

The invention provides a TFT (Thin Film Transistor) array substrate, a manufacturing method thereof, and a display device. the manufacturing method comprises steps: Passivation layers are formed on a substrate provided with a data line, wherein the passivation layers comprise a first passivation layer covering the data line and a second passivation layer covering other regions expect the data line; and the first passivation layer with a first preset thickness is removed to enable the thickness of the first passivation layer to be smaller than the thickness of the second passivation layer. in the above manufacturing method, through removing a passivation layer with a certain thickness covering the data line after the passivation layers are formed so as to enable the thickness of the passivation layer covering the data line to be smaller than the thickness of the passivation layer covering other regions expect the data line, segment difference caused as the thickness of the data line is thick can be effectively reduced problems of light leak, reduced contrast ratio and the like can be eliminated, and the display quality is improved.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a TFT (Thin Film Transistor, thin film transistor) array substrate, a manufacturing method thereof, and a display device. Background technique [0002] TFT-LCD (Thin Film Transistor Liquid Crystal Display, Thin Film Transistor Liquid Crystal Display) occupies a dominant position in the flat panel display market due to its advantages of small size, low power consumption, and no radiation. With the advancement of technology, consumers have put forward higher requirements for the display effect of the display, and the pursuit of performance such as high transmittance, wide viewing angle, high aperture ratio, low color difference, and low response time has prompted the rapid development of display technology. [0003] An important part of TFT-LCD includes a TFT array substrate. The TFT array substrate has an alignment layer on the side facing the liquid crystal. The process ...

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Problems solved by technology

[0005] In order to overcome the defects in the above-mentioned prior art, the technical problem to be solved by the present invention is: to provide a TFT array substrate and its manufacturing method, and a display device, so as to reduce the step difference caused by the data lines, eliminate the problems of light leakage and contrast reduction, etc. , to improve display quality

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