Patent ID: 11929709
Assignee: DAISHINKU CORPORATION
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. An oven-controlled crystal oscillator comprising a core section including a piezoelectric resonator, an oscillator IC and a heating element, wherein
the core section comprises a layered structure in which the oscillator IC, the piezoelectric resonator and the heating element are laminated, and
the core section is supported by a package via a core substrate, and furthermore is hermetically encapsulated in the package, wherein
the core section is supported by the package via only the core substrate,
the piezoelectric resonator includes: a first sealing member and a second sealing member both made of glass or crystal; and a piezoelectric resonator plate made of crystal,
the piezoelectric resonator plate includes a vibrating part, on respective main surfaces of which excitation electrodes are formed, and
the first sealing member and the second sealing member are laminated and bonded to each other via the piezoelectric resonator plate so as to hermetically seal the vibrating part of the piezoelectric resonator plate in an internal space.