Patent · US Expired

Component with a piezoelectric functional layer

US7489067B2 · kind B2 · utility

12Cited by

12References

16Claims

0Family size

Assignee

EPCOS AG · DE

Inventors

Thomas Metzger · North Tonawanda, US
Christian Diekmann · Hohenlockstedt, DE
Edgar Schmidhammer · Stein an der Traun, DE

Key dates

Filing date	Feb 6, 2004
Grant date	Feb 10, 2009
Priority date	—
Expiry date	Dec 17, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH10N30/501
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An electrical component includes a substrate, a first electrode layer, a structured growth layer that is thinner than the first electrode layer, a piezoelectric layer, and a second electrode layer. The growth layer is on the first electrode layer, the growth layer is structured relative to the first electrode layer, and the growth layer has a smaller surface area than the first electrode layer. The growth layer may be selected to support ordered growth relative to the piezoelectric layer.

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