Patent ID: 9431431
Filing Date: 2016-08-30
CPC Classification: G02F,H01L

Claim Text:
1. An active matrix display device comprising: a transistor comprising a semiconductor layer which comprises a channel formation region; a first conductive layer electrically connected to one of a source and a drain of the transistor; a power source line; a first insulating film over the power source line, the first conductive layer and the transistor; a second conductive layer over the first insulating film, wherein the second conductive layer is connected to the power source line through a contact hole of the first insulating film and is configured to be supplied with a common potential through the power source line; a second insulating film over the second conductive layer; and a pixel electrode electrically connected to the first conductive layer, wherein the pixel electrode and the second conductive layer are overlapped with each other with the second insulating film interposed therebetween to form a holding capacitance, wherein the pixel electrode is in direct contact with the first conductive layer, and wherein the first conductive layer overlaps a majority of the channel formation region of the transistor.