Patent ID: 7208961

Claim:
An electrostatic capacitance detection device comprising: an electrostatic capacitance detection element arranged in M rows and N columns, including: a signal detection element that retains a charge in proportion to the electrostatic capacitance, the signal detection element including: a capacitance detection electrode; and a capacitance detection dielectric layer formed on the capacitance detection electrode, the capacitance detection dielectric layer including: a first semiconductor layer; and an insulator disposed between the capacitance detection electrode and the first semiconductor layer; and a signal amplification element that amplifies a signal corresponding to the retained charge in the signal detection element, the signal amplification element including a second semiconductor layer different from the first semiconductor layer; and a power supply line supplying a power source to the electrostatic capacitance detection elements, wherein the capacitance detection dielectric layer is located on an exrosed surface of the electrostatic capacitance detection element.