Patent · US Active

Small piezoelectric resonator

US11146239B2 · kind B2 · utility

0Cited by

6References

18Claims

0Family size

Assignee

Micro Crystal SA · CH

Inventors

Silvio Dalla Piazza · La Chaux-de-Fonds, CH
Felix Staub · Koppigen, CH

Key dates

Filing date	Sep 20, 2018
Grant date	Oct 12, 2021
Priority date	—
Expiry date	May 8, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH03H2003/0492
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

The invention relates to a piezoelectric resonator, which comprises a base and at least two vibrating arms (3) extending from the base, at least two grooves (4a, 4b) being formed opposite each other on part of the length of the arms and on upper and lower faces of the arms. The depth of the groove on the upper face is less than 30% of the total thickness of each arm and the depth of the groove on the lower face is more than 50% of the total thickness of each arm, or reversely.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.