Method of manufacturing a piezoelectric element

Details Method of manufacturing a piezoelectric element Method of manufacturing a piezoelectric element

1996-11-22

1999-11-30

Hall, Carl E.

Metal working

Piezoelectric device making

264 22, 310328, H01L 4122

Patent

active

059919884

ABSTRACT:
In a piezoelectric element (21), an internal electrode (31) is embedded in a piezoelectric ceramic body (22) to extend in its longitudinal direction, first to third surface electrodes (23 to 25, 27 to 29) are formed on upper and lower surfaces of the piezoelectric ceramic body (22) in first to third portions along the longitudinal direction, connecting electrodes (26, 30) are formed to connect the first to third surface electrodes (23 to 25, 27 to 29) with each other, the first to third portions are so polarized that the second portion is oppositely polarized to the first to third portions, and regions located above and under the internal electrode are polarized in opposite directions in the respective ones of the first to third portions.

REFERENCES:
patent: 5400488 (1995-03-01), Ohno et al.

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