Kyocera Crystal Device Corporation patents

Piezoelectric blank, piezoelectric vibration element and piezoelectric vibration device

A crystal blank includes a vibrating arm which extends in a direction intersecting the polarization direction. In at least one of the upper surface and lower surface which are parallel to the direction of extension of the vibrating arm and run along polarization direction, the vibrating arm is provided with... Kyocera Crystal Device Corporation

Crystal element and crystal device

The crystal element includes: a mesa-shaped crystal piece in a substantially rectangular shape in a plan view including an oscillation section having a first protruded section and a second protruded section; excitation electrodes provided on both main surfaces of the oscillation section; leading sections provided side by side along a... Kyocera Crystal Device Corporation

Crystal vibration element and crystal vibration device

A vibration element includes a crystal blank, a pair of excitation electrodes, and pair of extraction electrodes. The crystal blank is an AT cut crystal blank including a mesa part and an outer circumferential part which is thinner than the mesa part and surrounds the mesa part. The pair of... Kyocera Crystal Device Corporation

Tuning fork type crystal blank, tuning fork type crystal element, and crystal device

A tuning fork type crystal blank includes a base part, a pair of vibrating parts which extend from the base part parallel with each other, an auxiliary part including a support part located on one side of an alignment direction of the pair of vibrating parts relative to the base... Kyocera Crystal Device Corporation