Array substrate, manufacturing method of routing line and test pad of array substrate as well as liquid crystal panel

Abstract

The invention provides an array substrate. The array substrate comprises a test pad located in a test pad area and a routing line located in a routing area, wherein the routing line is connected with the test pad; the routing line comprises a first metal layer, a first insulation layer, a first passivation layer, a second insulation layer, a second passivation layer and a transparent electrode layer which are successively arranged on the substrate and are located in the routing area. The invention also provides a manufacturing method of the routing line and the test pad of the array substrate as well as a liquid crystal panel. In a routing structure of the array substrate, a second metal layer which is a source-drain metal layer of a thin film transistor is eliminated; a pixel electrode layer is in span connection with the first metal layer; a plurality of film layers are arranged between the pixel electrode layer and the first metal layer, and a long distance is formed between the pixel electrode layer and the first metal layer, thus the breakdown threshold voltage can be increased, and the stray capacitance can be reduced, so that the occurrence probability of electrostatic discharge can be reduced.

Description

technical field [0001] The invention belongs to the technical field of liquid crystal display, and in particular, relates to an array substrate, a manufacturing method of its wiring and test pads, and a liquid crystal panel. Background technique [0002] With the evolution of optoelectronic and semiconductor technology, it has also led to the vigorous development of Flat Panel Display. Among many flat panel displays, Liquid Crystal Display (LCD) has high space utilization efficiency, low power consumption, Many superior features such as no radiation and low electromagnetic interference have been used in all aspects of production and life. [0003] A liquid crystal display usually includes a liquid crystal panel and a backlight module arranged opposite to each other. Since the liquid crystal panel cannot emit light, the backlight module needs to provide uniform light to the liquid crystal panel, so that the liquid crystal panel can display images. A liquid crystal panel gene...

AI Technical Summary

Problems solved by technology

However, in the existing wiring structure, there is only a very thin layer of the first metal layer (which is formed simultaneously with the gate metal layer) and the second metal layer (which is formed simultaneously with the source-drain metal layer). An insulating layer (which is formed at the same time as the gate insulating layer), and a large amount of charge is easy to accumulate between the first metal layer and the second metal layer, so that electrostatic discharge is very easy to occur, and then damage the device

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