Patent ID: 8860899

Claim:
A display device comprising: a crystalline semiconductor film over a substrate; a gate line adjacent to the crystalline semiconductor film interposed with a first insulating film therebetween; a second insulating film over the gate line; a source line over the second insulating film; a drain electrode over the second insulating film, the drain electrode formed in a same layer as the source line; and a pixel electrode over the drain electrode, wherein the crystalline semiconductor film comprises a first channel forming region and a second channel forming region, wherein the source line overlaps with the first channel forming region, wherein the drain electrode overlaps with the second channel forming region, wherein the crystalline semiconductor film has an island shape, wherein the source line comprises a first layer comprising aluminum and a second layer comprising titanium, wherein the pixel electrode is electrically connected to the drain electrode, wherein the crystalline semiconductor film comprises at least a bending portion, and wherein the source line overlaps with the bending portion of the crystalline semiconductor film.