THIN-FILM TRANSISTOR ARRAY SUBSTRATE AND FABRICATION METHOD AND DISPLAY DEVICE

摘要

Provided are a thin-film transistor array substrate, a fabrication method therefor and a display device. The fabrication method therefor comprises: forming a first passivation layer (8) on a substrate (1), and forming a panel wiring PAD region via hole (11) in the first passivation layer (8) above a panel wiring PAD region (10) by means of a first patterning process; forming a second passivation layer (16) on the substrate (1) where the panel wiring PAD region via hole (11) is formed, and forming a pixel region via hole (15) in the first passivation layer (8) and the second passivation layer (16) above a pixel electrode (7) by means of a second patterning process, so as to allow the top size of the pixel region via hole (15) to be smaller than the bottom size; and covering the substrate (1) where the pixel region via hole (15) is formed with a transparent conducting layer to form a second display electrode.