Patent ID: 8390754

Claim:
A display device comprising: a substrate; a display region having a pixel switch, a pixel electrode which is connected to the pixel switch, and a transparent common electrode formed over the substrate; a peripheral region having a gate signal line which is connected to the pixel switch, and a common connection line which is connected to the transparent common electrode; an insulating layer which is disposed on the gate signal line and the common connection line; a conductive layer which is disposed on the insulating layer and crosses the gate signal line and crosses the common connection line in the peripheral region; a first semiconductor film which is disposed between the insulating layer and the conductive layer; and a second semiconductor film which is disposed between the insulating layer and the conductive layer and is separated from the first semiconductor film; wherein the conductive layer is connected to the gate signal line via a pair of diodes; wherein lengths of the gate signal line and the common connection line are different by at least 10 times; wherein the first semiconductor film overlaps, in plan view, a region where the gate signal line crosses the conductive layer; and wherein the second semiconductor film overlaps, in plan view, a region where the common connection line crosses the conductive layer.