Array substrate, method for repairing defective lines thereof, and display device

Abstract

The invention relates to the technical field of display device maintenance, and discloses an array substrate and a line defect repair method thereof, and a display device. The common electrode of the array substrate includes: a frame body, a first strip-shaped connecting part arranged in the frame and connected to the frame body at both ends, and a second strip-shaped connecting part cross-connected with the first strip-shaped connecting part and disconnected from the frame body at both ends. The strip-shaped connecting portion, and the vertical projection of the signal line on the substrate is located on the second strip-shaped connecting portion. In the above technical solution, by changing the shape of the common electrode, a grid-like structure is formed; when the signal line is short-circuited, the repair can be completed by cutting off the frame or the first strip-shaped connection part, and the signal line is open. , the repair can be completed by welding the signal line to the frame body and / or the second strip-shaped connection part, and cutting off the frame body and the first strip-shaped connection part accordingly. The whole repair process is simple and fast, and at the same time, it avoids the Other damage caused in the process improves the efficiency of maintenance.

Description

technical field [0001] The present invention relates to the technical field of display device maintenance, in particular to an array substrate and a method for repairing defective lines thereof, and a display device. Background technique [0002] In TFT-LCD (Thin Film Transistor Liquid Crystal Display, thin film transistor liquid crystal display), because the liquid crystal molecules cannot be fixed at a certain voltage all the time, otherwise, even if the voltage is canceled for a long time, the liquid crystal molecules will be destroyed due to the characteristics of the liquid crystal. It is no longer possible to rotate in response to changes in the electric field to form different gray scales. So every once in a while, the voltage must be reversed to avoid damage to the properties of the liquid crystal molecules. [0003] In the manufacturing process of TFT LCD, the storage capacitor Cs (storage capacitor) is produced by using the parallel plate capacitance formed by the...

AI Technical Summary

Problems solved by technology

[0005] In the process of manufacturing array substrates, there will be line defects such as signal line 1 disconnection, signal line 1 and common electrode 3 short circuit, signal line 1 and gate scanning line short circuit, etc., which will be cut or punched during maintenance. Form a new signal line 1 and common electrode 3 short circuit

Therefore, it is necessary to cut off the surrounding common electrode 3, and the maintenance method is complicated. During the cutting process, the pixel electrode 4 indium tin oxide and the metal of the common electrode 3 are welded together, resulting in a low repair success rate.

Moreover, cutting off the common electrode 3 will cause a higher rate of project failure after continuous pixel defects

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