SUBSTRATE FOR DISPLAY DEVICE AND METHOD FOR MANUFACTURING SAME, AND DISPLAY DEVICE

摘要

A thin-film transistor substrate (20) comprises: an insulating substrate (10a); a gate insulating layer (12) arranged on the insulating substrate (10a); a connecting layer (25) formed from indium gallium zinc oxide (IGZO) and provided on the gate insulating layer (12); a drain electrode (16b) formed from titanium and provided on the connecting layer (25); a contact hole (Ca) formed in the connecting layer (25) and drain electrode (16b); and a pixel electrode (19a) contacting the connecting layer (25) and provided on the surface of the contact hole (Ca). The drain electrode (16b) and the pixel electrode (19a) are electrically connected by way of the connecting layer (25).