Electrostatic capacitance detection device

An electrostatic capacitance detection device that reads surface contours of a target object by detecting electrostatic capacitance, which changes according to a distance from the target object, comprising:

• output lines;
• power supply lines;
• M number of row lines, and N number of column lines that are arranged in a matrix of M rows and N columns;
• and
• an electrostatic capacitance detection element that is formed at intersections between the row lines and column lines;
• the electrostatic capacitance detection element including a signal detection element, a signal amplifying element, a column selection element and a row selection element;
• the signal detection element including a capacitance detecting electrode, a capacitance detecting dielectric layer and a reference capacitor;
• the reference capacitor including a reference capacitor first electrode, a reference capacitor dielectric layer and a reference capacitor second electrode;
• the signal amplifying element, the column selection element and the row selection element being coupled in series and located between an output line and a power supply line;
• and
• the reference capacitor first electrode being electrically coupled to one of the row lines.