Piezoelectric resonator and electronic component including same
US6111343A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1998 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Aug 20, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/605
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A piezoelectric resonator includes a base member including a plurality of laminated piezoelectric layers and internal electrodes. The adjacent piezoelectric layers are polarized in different directions with an internal electrode disposed therebetween. A groove is provided on one lateral surface of the base member, and every other internal electrode is exposed at both sides of the groove. Insulating films are disposed on unexposed portions of the internal electrodes. External electrodes are provided on both sides of the groove in the base member and are connected to the internal electrodes. As a result of this structure, the piezoelectric resonator prevents a reduction in the difference .DELTA.F between the resonant frequency and the anti-resonant frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.