Patent · US Expired

SAW-component having a reduced temperature path and method for the production thereof

US7589452B2 · kind B2 · utility

8Cited by

10References

19Claims

0Family size

Assignee

EPCOS AG · DE

Inventors

Markus Hauser · Feldafing, DE
Ulrich Knauer · Munich, DE
Anton Leidl · Munich, DE
Evelyn Riha · Nußdorf, DE
Gerd Riha · Munich, DE
Ulrike Rösler · Hebertshausen, DE
Werner Ruile · Birkenfeld, DE
Clemens Ruppel · Hersbruck, DE
Gerd Scholl · Hersbruck, DE
Ulrich Wolff · Munich, DE

Key dates

Filing date	Aug 18, 2005
Grant date	Sep 15, 2009
Priority date	—
Expiry date	Aug 18, 2025

Classification

Technology area (CPC H)Electricity
CPC primaryH03H9/02984
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

Elements and methods for forming elements that operate with acoustic waves are disclosed. The element includes a piezoelectric electric substrate that has a first thermal coefficient of expansion, electrically conducting element structures on an upper side of the substrate, a compensation layer on an underside of the substrate, and an SiO2 layer over the element structures.

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