US 7,554,251 B2
Multi-layer piezoelectric element and method for manufacturing the same
Mitsuo Kondo, Kirishima (Japan); Masaki Terazono, Kirishima (Japan); Takeshi Okamura, Kirishima (Japan); and Katsushi Sakaue, Kirishima (Japan)
Assigned to Kyocera Corporation, Kyoto (Japan)
Appl. No. 10/598,680
PCT Filed Mar. 09, 2005, PCT No. PCT/JP2005/004097
§ 371(c)(1), (2), (4) Date May 15, 2007,
PCT Pub. No. WO2005/086247, PCT Pub. Date Sep. 15, 2005.
Claims priority of application No. 2004-065725 (JP), filed on Mar. 09, 2004; application No. 2004-076098 (JP), filed on Mar. 17, 2004; application No. 2004-158454 (JP), filed on May 27, 2004; application No. 2004-220727 (JP), filed on Jul. 28, 2004; and application No. 2004-344821 (JP), filed on Nov. 29, 2004.
Prior Publication US 2007/0278907 A1, Dec. 06, 2007
Int. Cl. H01L 41/047 (2006.01)
U.S. Cl. 310—366  [310/363] 24 Claims
OG exemplary drawing
 
1. A multi-layer piezoelectric element comprising:
a stack formed by stacking at least one piezoelectric layer and a plurality of internal electrodes consisting of first and second internal electrodes alternately one on another;
a first external electrode which is formed on a first side face of the stack and is connected to the first internal electrode;
a second external electrode which is formed on a second side face of the stack and is connected to the second internal electrode,
and a glass layer which is formed between said at least one piezoelectric layer and said a plurality of internal electrodes.