Patent ID: 7737517

Claim:
A display device, comprising a pixel comprising: a gate line, the gate line having a portion serving as a gate electrode of a thin film transistor; a gate insulating film; a substrate on which the gate line and the gate insulating film are sequentially formed; a data line formed on the gate insulating film, the data line having a portion serving as a drain electrode of the thin film transistor; a pixel electrode formed on the gate insulating film, the pixel electrode having a portion serving as a source electrode of the thin film transistor; an oxide semiconductor layer formed on the gate insulating film over the gate electrode; and a protective film formed on the data line, the pixel electrode, and the oxide semiconductor layer; wherein the data line and the drain electrode is made of one continuous layer; wherein the pixel electrode and the source electrode is made of one continuous layer; and wherein the oxide semiconductor layer is directly connected to the drain electrode and the source electrode, and the data line and the pixel electrode comprise different conductive films.