US 5,859,488 A · Piezoelectric element and method of producing same

Abstract

A piezoelectric element prevents the development of a short circuit between separate electrodes and provides a high level of connection reliability. The piezoelectric element utilizing a longitudinal oscillation mode includes a piezoelectric substrate which has on one main surface thereof a first electrode and a second electrode separated by longitudinally extending linear grooves and, on the other main surface, a third electrode. Conductive support members are secured to node sections of the first and second electrodes so as to be spaced apart from each other with respect to the longitudinal dimension of the piezoelectric substrate.

Claims8

Dependent claims

A piezoelectric element comprising:

a piezoelectric substrate having a first main surface and a second main surface;
at least a first and a second electrode disposed on said first main surface of the piezoelectric substrate and being separated from each other by at least one longitudinally extending groove;
a third electrode disposed on said second main surface of the piezoelectric substrate;
and
a first conductive support member disposed on the first electrode and a second conductive support member disposed on the second electrode such that the first and second conductive support members are spaced apart from each other with respect to a longitudinal dimension of the piezoelectric substrate.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

08/923,196Filed 4 Sep 1997

Priority

JP 9-01756414 Jan 1997

Granted

12 Jan 1999

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

H03H 9/1014
For bulk acoustic wave [BAW] devices: the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical…
H03H 3/02
For the manufacture of electromechanical resonators or networks: for the manufacture of piezoelectric or electrostrictive resonators or networks
H03H 9/0514
For bulk acoustic wave devices: consisting of mounting pads or bumps
Y10T 29/42
Metal working: piezoelectric device making

Piezoelectric element and method of producing same

Life of this patent

Piezoelectric element and method of producing same

Life of this patent

Abstract

Claims8