Patent ID: 9207504
Filing Date: 2015-12-08
Classification: G02F,H01L

Abstract:
1. A liquid crystal display device comprising: a first substrate; a first gate electrode over the first substrate; a gate insulating layer over the first gate electrode; a semiconductor layer comprising a channel formation region over the first gate electrode with the gate insulating layer interposed therebetween; a common electrode over the gate insulating layer; an insulating layer over the semiconductor layer and the common electrode; a pixel electrode over the insulating layer; a liquid crystal layer over the pixel electrode; and a second substrate over the liquid crystal layer, wherein each of the semiconductor layer and the common electrode comprises indium and zinc, wherein the pixel electrode overlaps with the common electrode with the insulating layer interposed therebetween to form a capacitor, wherein the pixel electrode is electrically connected to the semiconductor layer, wherein the common electrode comprises the same material as the semiconductor layer, and wherein the semiconductor layer and the common electrode have substantially the same thickness.