Patent ID: 7196528

Claim:
An electrostatic capacitance detection device, comprising: an electrostatic capacitance detection element arranged in a matrix form; a row line arranged in each row for selecting a relevant electrostatic capacitance detection element arranged in a relevant row; and an output line arranged in each column for outputting a signal from a relevant electrostatic capacitance detection element arranged in a relevant column, wherein the electrostatic capacitance detection element includes: a row selection element that controls the outputting of the signal of the relevant electrostatic capacitance detection element to the relevant output line based on the signal from the relevant row; and a signal amplifying element that amplifies the signal corresponding to charges in response to an electrostatic capacitance; the row selection element and the signal amplifying element have a source electrode and a drain electrode respectively, the source electrode and drain electrode of the relevant signal amplifying element, and the source electrode and drain electrode of the relevent row selection element are coupled in series between the relevant output line and the relevant row line; and the signal form the relevant electrostatic capacitance detection element, which is caused to be in a selection state based on the signal from the relevant row line, is outputted to the output line arranged in the relevant electrostatic capacitance detection element.