Patent ID: 9679955
Date: 2017-06-13
CPC Classifications: H01L

Claim:
1. A light-emitting device including a pixel portion, the pixel portion comprising: a first transistor and a second transistor each including a channel formation region, a source, and a drain; a first insulating film over the channel formation region of the first transistor and the channel formation region of the second transistor; a first gate electrode over and in contact with the first insulating film, the first gate electrode overlapping with the channel formation region of the first transistor; a second gate electrode over and in contact with the first insulating film, the second gate electrode overlapping with the channel formation region of the second transistor; a second insulating film over and in contact with the first gate electrode and the second gate electrode; a first wiring over and in contact with the second insulating film, the first wiring including a region which overlaps with the second gate electrode, wherein a capacitor comprises the region and the second gate electrode overlapping with the region; a third insulating film over the first wiring; a pixel electrode over and in contact with the third insulating film, the pixel electrode being electrically connected to one of the source and the drain of the second transistor; and a second wiring over and in contact with the third insulating film, wherein the second wiring does not overlap with the region.