Patent ID: 9553109
Date: 2017-01-24
CPC Classifications: G02F,H01L

Claim:
1. A thin film transistor substrate comprising: an insulating substrate; a gate electrode located on said insulating substrate; a first insulating film that covers said gate electrode; a semiconductor film located over said gate electrode with said first insulating film located therebetween, said semiconductor film being formed of an oxide semiconductor; a second insulating film that covers said semiconductor film; a first source electrode located on one end of said second insulating film, said first source electrode being formed of a conductor other than oxide conductors; a first drain electrode located on another end of said second insulating film, said first drain electrode being formed of a conductor other than oxide conductors; a second source electrode located on said first source electrode and connected with said semiconductor film through a first contact hole provided in said first source electrode and said second insulating film, said second source electrode being formed of an oxide conductor; a second drain electrode located on said first drain electrode and connected with said semiconductor film through a second contact hole provided in said first drain electrode and said second insulating film, said second drain electrode being formed of an oxide conductor; a pixel electrode formed by extending a part of said second drain electrode; and a third insulating film that covers said first insulating film, said second source electrode, said second drain electrode, and said pixel electrode.