Sensor, input device, and electronic apparatus

An electronic apparatus comprising:

• an exterior body;
• a pressure-sensitive sensor having a first surface and a second surface;
• a support body supporting the pressure-sensitive sensor such that the exterior body faces the first surface;
• and
• a first deformation layer disposed at least either between the first surface and the exterior body or between the second surface and the support body, and including a conductive material, wherein
• the pressure-sensitive sensor includes
• a capacitive sensor electrode unit including a sensing unit, and
• a second deformation layer disposed between the first deformation layer and the sensor electrode unit, and
• the first deformation layer and the second deformation layer satisfy at least one of relationships represented by the following formulas (1) to (3),
• Elastic modulus of the first deformation layer≤elastic modulus of the second deformation layer (1)
• Thickness of the first deformation layer≥thickness of the second deformation layer (2)
• Area occupancy of the first deformation layer≤area occupancy of the second deformation layer (3)

A sensor comprising:

• a pressure-sensitive sensor main body having a first surface and a second surface;
• and
• a first deformation layer disposed on at least one of the first surface or the second surface, wherein
• the pressure-sensitive sensor main body includes
• a capacitive sensor electrode unit including a sensing unit,
• a reference electrode layer, and
• a second deformation layer disposed between the reference electrode layer and the sensor electrode unit, and
• the first deformation layer and the second deformation layer satisfy at least one of relationships represented by the following formulas (1) to (3),
• Elastic modulus of the first deformation layer≤elastic modulus of the second deformation layer (1)
• Thickness of the first deformation layer≥thickness of the second deformation layer (2)
• Area occupancy of the first deformation layer≤area occupancy of the second deformation layer (3)

An input device comprising:

• an exterior body;
• a pressure-sensitive sensor having a first surface and a second surface;
• a support body supporting the pressure-sensitive sensor such that the exterior body faces the first surface;
• and
• a first deformation layer disposed at least either between the first surface and the exterior body or between the second surface and the support body, wherein
• the pressure-sensitive sensor includes
• a capacitive sensor electrode unit including a sensing unit,
• a reference electrode layer, and
• a second deformation layer disposed between the reference electrode layer and the sensor electrode unit, and
• the first deformation layer and the second deformation layer satisfy at least one of relationships represented by the following formulas (1) to (3),
• Elastic modulus of the first deformation layer≤elastic modulus of the second deformation layer (1)
• Thickness of the first deformation layer≥thickness of the second deformation layer (2)
• Area occupancy of the first deformation layer≤area occupancy of the second deformation layer (3)