SUBSTRATE FOR DISPLAY DEVICE AND PROCESS FOR PRODUCTION THEREOF, AND DISPLAY DEVICE

摘要

Disclosed is an active matrix substrate (20) comprising an insulating substrate (10a), a gate electrode (11) which is arranged on the insulating substrate (10a), a gate insulating layer (12) which is so arranged as to cover the gate electrode (11), an oxide semiconductor layer (13) which is arranged on the gate insulating layer (12), and a protective layer (17) which covers the oxide semiconductor layer (13). The active matrix substrate (20) has a display region (D) on which an image is to be displayed and a gate terminal-terminal region (Ts) which is located adjacent to the display region (D) and has, formed therein, a gate terminal (26) for the connection to an external circuit. The gate terminal (26) is composed of a wiring line (21) for a terminal, which is formed on the insulating substrate (10a). The wiring line (26) is composed of an electrically conductive material that is different from a material that constitutes the oxide semiconductor layer (13).