Patent ID: 8148723

Claim:
A light-emitting device comprising: a gate electrode layer over an insulating surface; a first insulating film over the gate electrode layer; a semiconductor layer over the first insulating film; an impurity semiconductor film over the semiconductor layer; a conductive film over the impurity semiconductor film; a second insulating film having a first opening portion over the conductive film; a pixel electrode layer over the second insulating film, the pixel electrode layer being in contact with the conductive film through the first opening portion; a third insulating film over the pixel electrode layer and including a portion that is closer to the insulating surface than the conductive film and includes a second opening portion; an EL layer over the third insulating film, the EL layer being in contact with the pixel electrode layer through the second opening portion; a cavity between the gate electrode layer and the second insulating film, and between the first insulating film and the insulating surface.