Thin film transistor, array substrate, display device and manufacturing method

Abstract

The invention discloses a thin film transistor, an array substrate, a display device and a manufacturing method and belongs to the display technical field. The thin film transistor includes a source electrode, a drain electrode, an active layer, a gate insulating layer and a gate electrode; the active layer and the drain electrode are located in the same layer; materials for forming the active layer contain metallic oxides; materials for forming the drain electrode contain conductive metallic oxides; the source electrode and the gate insulating layer are located at the same side of the active layer; the source electrode and the gate insulating layer contact with the same side surface of the active layer; the gate insulating layer is located between the source electrode and the drain electrode; the thickness of the gate insulating layer is larger than that of the source electrode; materials for forming the source electrode contain metal; and the gate electrode contacts with one surface of the gate insulating layer which is far away from the active layer. According to the thin film transistor of the invention, the materials for forming the drain electrode contain conductive metallic oxides; the materials for forming the source electrode contain metal; the source electrode and a data line are formed through patternizing a source electrode layer; metals for forming the data line and the source electrode both contain metal; and therefore, the problem of signal delay can be solved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a thin film transistor, an array substrate, a display device and a manufacturing method. Background technique [0002] Liquid crystal display is gradually developing towards large size, high image quality and low energy consumption. Its structure includes placing a liquid crystal layer between two parallel substrates, the lower substrate is an array substrate, and the upper substrate is a color filter substrate. To control the rotation direction of the liquid crystal molecules, so as to achieve the purpose of controlling the transmittance of incident light at each pixel point and achieving the purpose of display. [0003] The array substrate includes a base substrate, a data line, a source electrode, a drain electrode, a pixel electrode, a gate, a gate line and a gate insulating layer. Each electrode and a signal line are mainly formed on the base substrate of the array substrat...

AI Technical Summary

Problems solved by technology

[0005] The material of the existing source and data lines will choose conductive metal oxides, and using conductive metal oxides as data lines will cause relatively serious signal delays, which will affect the display quality of liquid crystal displays.

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