Patent ID: 7724234

Claim:
A panel for a display device, comprising: an electroconductive substrate formed from an electroconductive metal material; a substrate insulating layer arranged on the electroconductive substrate; an X-direction electric wiring group and a Y-direction electric wiring group arranged on the electroconductive substrate; pixels arranged in a matrix; a TFT element for driving the pixel; and a control unit for controlling, to a predetermined potential, a substrate potential of the electroconductive substrate, wherein the TFT element has a reverse stagger structure, with the substrate insulating layer being arranged between the electroconductive substrate and a gate electrode of the TFT element, a gate insulating layer of the TFT element is arranged between a drain electrode of the TFT element and the electroconductive substrate, an electric capacitor is formed in a part of the substrate insulating layer between the drain electrode and the electroconductive substrate, and the electric capacitor is set based on the gate insulating layer of a film thickness smaller than a thickness of the substrate insulating layer without causing insulating breakdown, wherein the control unit is electrically connected to the electroconductive substrate through a contact hole formed in the substrate insulating layer.