Ultra-thin piezoelectric resonator
US6426537B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2000 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Dec 13, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/12042
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Encapsulated piezoelectric resonator including on the one hand a central plate (5) made of a piezoelectric material cut to form a frame (6) and a central resonant element (9) connected to said frame (6), the top and bottom faces having a metal coating, on the other hand bottom (11) and top (16) covers, each being formed by a spacing frame (12, 17) made of metal or a metal alloy and a closing plate (14, 19), characterised in that at least one of the elements (12, 14, 17, 19) forming the covers (11, 16) is electrically connected to the frame (6) of the central plate (5) and has an extension (10, 13, 18, 20) bent into a Z shape to bring its distal portion (10a, 13a, 18a, 20a) in line with a covering plate (14, 19) and to form electrical and mechanical connection means situated in a same plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.