Piezoelectric oscillation device and surface acoustic wave device
US5889357A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1995 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Dec 6, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/0547
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The substrate for devices 10 comprises an insulating substrate 12 of an insulating material, conducting layers 14 formed on the insulating substrate 12 and opposed to each other at a certain distance, and a dielectric film 16 formed on that portion of the insulating substrate 12 between the conducting layers 14. The substrate 10 incorporates a capacitance constituted by the opposed electric layers 14 and the dielectric film 16. A piezoelectric oscillator 20 is connected to the left and right conducting layers 14b, 14c of the substrate for devices 10. A cap 22 is connected to a boundary part of the substrate 10 through epoxy resin 24. The substrate for devices 10 with a built-in capacitance can reduce fabrication costs of a piezoelectric oscillation device and a surface acoustic wave device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.