Patent ID: 9490268
Filing Date: 2016-11-08
CPC Classification: G02F,G06F,H01L

Claim Text:
1. A display device comprising: a gate electrode on an insulating surface; a first wiring on the insulating surface; a first insulating film over the gate electrode and the first wiring; a semiconductor layer on the first insulating film, the semiconductor layer comprising a channel formation region over the gate electrode with the first insulating film interposed therebetween; a source electrode over and in electrical contact with the semiconductor layer; a drain electrode over and in electrical contact with the semiconductor layer; a second wiring on the first insulating film; a second insulating film over the source electrode, the drain electrode and the second wiring; and a third wiring over the second insulating film, wherein the third wiring contacts the first wiring through an opening of the first insulating film, wherein the third wiring contacts the second wiring through an opening of the second insulating film, and wherein the second wiring has a smaller taper angle than the source electrode and the drain electrode.