Array substrate and manufacturing method thereof and display device

Abstract

The invention provides an array substrate and a manufacturing method thereof and a display device. The array substrate comprises a film transistor and a common electrode. The film transistor comprises a grid electrode, an active layer, a source electrode and a drain electrode formed on a substrate. The grid electrode comprises a first conducting layer and a second conducting layer. The first conducting layer and the common electrode are on the same layer; and the second conducting layer is metal. When the array substrate forms the common electrode, the first conducting layer on the same layer with the common electrode is formed; the second conducting layer is formed on the first conducting layer; and the first conducting layer and the second conducting layer form the grid electrode. In the array substrate, the first conducting layer is formed while forming the common electrode, and the process of specially preparing a buffer layer between the second conducting layer and the substrate to increase adhesiveness between the second conducting layer and the substrate is no longer needed, thereby simplifying the structure of the array substrate, and saving the technological process of preparing the buffer layer between the second conducting layer and the substrate.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to an array substrate, a manufacturing method thereof, and a display device. Background technique [0002] Due to the advantages of low power consumption and no radiation, liquid crystal display devices have now occupied a dominant position in the field of flat panel displays. A liquid crystal panel in an existing liquid crystal display device usually includes an array substrate and a color filter substrate disposed opposite to each other, and a liquid crystal layer filled between the array substrate and the color filter substrate, wherein the array substrate is provided with a plurality of thin film transistors and a plurality of The pixel electrode is connected to the drain of the thin film transistor, and a common electrode corresponding to the pixel electrode is provided on the color filter substrate. When the pixel electrode is charged by the thin film transistor,...

AI Technical Summary

Problems solved by technology

[0004] However, the adhesion between Cu and glass is poor. In the production process of the existing array substrate, a buffer layer with good adhesion to glass needs to be deposited on the glass substrate first, and then metal Cu is deposited on the buffer layer. Gate or source and drain are formed by etching process

The manufacturing process of the array substrate using metal Cu to form the gate or source and drain requires the use of a buffer layer to adhere the metal Cu to the glass or insulating layer. The structure of the array substrate is complex, and the process flow of the array substrate is cumbersome.

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