Patent ID: 8895984

Claim:
A capacitor circuit for use in a display control circuit, the capacitor circuit comprising: a substrate; a polysilicon layer formed over the substrate, the polysilicon layer comprising a conductive portion doped with one or more impurities over a first area of the substrate and a transistor portion over a second area of the substrate, wherein the transistor portion forms a drain, a channel, and a source of a transistor, and wherein the transistor portion is electrically connected to the conductive portion; a first insulation layer formed directly on the polysilicon layer; a first metal layer formed directly on the first insulation layer, and the first metal layer comprising a first area and a second area formed on the first insulation layer, wherein the first area and the second area of the first metal layer are electrically separated from each other, wherein the first area of the first metal layer is electrically separated from the polysilicon layer, and wherein the second area of the first metal layer is electrically separated from the polysilicon layer when the transistor is turned off; a second insulation layer formed on the first metal layer; and a second metal layer formed directly on the second insulation layer and directly connected to the second area of the first metal layer, wherein the first area of the first metal layer at least partially overlaps the conductive portion of the polysilicon layer when viewed in a direction perpendicular to a top surface of the conductive portion of the polysilicon layer, wherein the first area of the first metal layer at least partially overlaps the second metal layer when viewed in the direction.