Display device, array substrate and manufacturing method thereof

Abstract

The invention relates to the technical field of display, in particular to a display device, an array substrate and a manufacturing method thereof. The array substrate comprises a substrate and a plurality of pixel units; each pixel unit comprises a thin film transistor and a pixel electrode; the thin film transistor comprises a source electrode, a drain electrode, an active layer, a grid electrode insulating layer and a grid electrode, wherein the source electrode and the drain electrode are oppositely arranged on the substrate and forms a channel of the thin film transistor; the active layer is positioned above the source / drain electrode and the channel; the grid electrode insulating layer and the grid electrode are arranged above the active layer in sequence; and the pixel electrode is positioned in an area outside the thin film transistor in the pixel unit and extends to the upper part of the drain electrode and is overlapped with the drain electrode. Through the array substrate provided by the invention, as the active layer is positioned above the source / drain electrode, the active layer can be prevented from being damaged in the forming process of the source / drain electrode. Moreover, when the active layer is made of metallic oxide, a blocking layer can be omitted, and further, the process flow is simplified, the production efficiency is improved, and the production cost is reduced.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display device, an array substrate and a manufacturing method thereof. Background technique [0002] In recent years, with the development of science and technology, liquid crystal display technology has also been continuously improved. TFT-LCD (Thin Film Transistor-Liquid Crystal Display, Thin Film Field Effect Transistor-Liquid Crystal Display) occupies an important position in the display field due to its advantages of good image display quality, low energy consumption, and environmental protection. [0003] While people are enjoying the high-quality image display of liquid crystal displays, their requirements for large sizes are also constantly increasing. When the size of the liquid crystal display increases continuously, the frequency of its driving circuit also needs to be continuously increased, and accordingly the mobility of the amorphous silicon transistor ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a display device, an array substrate and a manufacturing method thereof, so as to overcome the need to add an additional barrier layer to protect the metal oxide (such as IGZO) active layer from being damaged in the existing array substrate. The production of the array substrate caused by layers is complicated, the production efficiency is low, and the production cost of display devices such as liquid crystal panels is increased.

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