Patent ID: 7091726

Claim:
An electrostatic capacitance sensing device, the device comprising: M number of row lines; N number of column lines; and electrostatic capacitance sensing elements formed at intersections between the row lines and the column lines, and arranged in a matrix of M rows and N columns, each of the electrostatic capacitance sensing elements including a signal sensing element, a signal amplifying element, a row selection element, and a column selection element; the signal sensing element including a capacitance sensing electrode and a capacitance sensing dielectric film; the signal amplifying element being a semiconductor device to amplify a signal that includes a gate electrode, a gate insulation film, and a semiconductor film; the row selection element being a semiconductor device for row selection that includes a gate electrode, a gate insulation film, and a semiconductor film; the column selection element being a semiconductor device to select a column that includes a gate electrode, a gate insulation film, and a semiconductor film, and the semiconductor device to amplify a signal, the semiconductor device for row selection, and the semiconductor device to select the column being coupled to each other in series, wherein: the gate electrode of the MIS type thin-film semiconductor device to amplify a signal being coupled to the capacitance sensing electrode; the gate electrode of the MIS type thin-film semiconductor device for row selection being coupled to one of the row lines; and the gate electrode of the MIS type thin-film semiconductor device to select a column being coupled to one of the column lines.