Pixel unit, array substrate, display device and method for manufacturing the same

Abstract

A pixel unit is used in an array substrate of a display device. In one embodiment, it comprises a gate line, a source-drain line and a thin-film transistor; and the gate line is in an overlapped structure comprising a first MoW layer, a Cu layer and a second MoW layer overlapped successively; and a gate of the thin-film transistor is formed of the first MoW layer. In another embodiment, the source-drain line is in a same overlapped structure; and a source and a drain of the thin-film transistor are formed of the first MoW layer. The first embodiment is achieved by means of a halftone process while the second embodiment is achieved by means of a lift off process. Diffusion of Cu in the gate layer or in the source-drain layer towards the oxide active layer is prevented. Also disclosed is a method for manufacturing the abovementioned pixel unit, an array substrate comprising the abovementioned pixel unit, a display device comprising the abovementioned pixel unit, and a method for manufacturing abovementioned array substrate and display device.

Dependencies are inferred from the claim text.