Thin-film transistor array substrate and patching method thereof

Abstract

The invention provides a thin film transistor array substrate. The key points of the invention comprise that a pixel region is also provided with a first element and a second element; the first element comprises a grid insulation layer directly covering the surface of a substrate base plate, a semiconductor layer formed on the grid insulation layer and a first source electrode and a first drain electrode which are both formed on the semiconductor layer; and the second element comprises a grid insulation layer directly covering the surface of the substrate base plate, a semiconductor layer formed on the grid insulating layer and a second source electrode and a second drain electrode which are both formed on the semiconductor layer. For the thin film transistor array substrate with a pixel repairing structure, when the pixel bright spot defect generates, by utilizing a repairing method for the thin film transistor array substrate provided by the invention, the voltage at both ends of a liquid crystal capacitor is approach to the voltage difference VL0 corresponding to the darkest gray scale L0 in the end, so no light leakage occurs while viewing from different visual angles.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a thin film transistor array substrate with a pixel repair structure and a repair method thereof. Background technique [0002] At present, liquid crystal display, as a kind of flat panel display, has been widely used in various fields, and it has the advantages of low power consumption, thin shape and light weight. Generally, a liquid crystal display includes a liquid crystal panel, which includes a TFT array substrate with pixel electrodes, a color filter substrate with common electrodes, and a liquid crystal layer filled between the TFT array substrate and the color filter substrate. An electric field is generated between the pixel electrode and the common electrode, and the intensity of the electric field applied to the liquid crystal layer is controlled by the two electrodes to control the transmittance of incident light, thereby realizing the control of brigh...

AI Technical Summary

Problems solved by technology

Due to the limitation of the low voltage Vgl on the gate line and the inability to change the common voltage signal Vcom, the voltage across the repaired liquid crystal capacitor cannot be adjusted to be equal to the voltage difference V corresponding to the darkest gray scale L0 L0 , therefore, this repair method cannot solve the problem of light leakage when viewing from different viewing angles

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