Proximity sensor

A proximity sensor, comprising:

• a substrate;
• a first shield electrode disposed on a front surface of the substrate;
• a first detection electrode disposed on the front surface of the substrate, in a region surrounding the first shield electrode, the first detection electrode being electrically insulated from the first shield electrode;
• a second detection electrode disposed on the front surface of the substrate, inside a perimeter of the first detection electrode, the second detection electrode being electrically insulated from the first shield electrode and the first detection electrode;
• a drive unit supplied with power, connected to the first shield electrode, the first detection electrode, and the second detection electrode, and configured to apply voltage that equalizes an electric potential of the first shield electrode, an electric potential of the first detection electrode, and an electric potential of the second detection electrode;
• and
• a detection unit configured to detect a change in capacitance in the first detection electrode and the second detection electrode.