PRESSURE SENSOR AND PRESSURE DETECTION DEVICE

摘要

This pressure sensor is provided with: a fastening part; a ring-shaped oscillator supported on the fastening part by a plurality of support beams; a plurality of electrodes situated on the fastening part, and arranged at gaps in the oscillation direction of the ring-shaped oscillator; and an electret film formed on either one of the mutually facing surfaces of the ring-shaped oscillator and the electrodes.