The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2002
Filed:
Apr. 19, 2000
Applicant:
Inventor:
Teppei Kubota, Kusatsu, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 4/118 ; H01L 4/116 ; H01L 4/1187 ; H01L 4/122 ; H01L 4/124 ;
U.S. Cl.
CPC ...
H01L 4/118 ; H01L 4/116 ; H01L 4/1187 ; H01L 4/122 ; H01L 4/124 ;
Abstract
A piezoelectric paste which is used for forming a piezoelectric thick film by the thick film forming technique, which can be burned at a relative low temperature and which can form a piezoelectric film having good polarizability and high piezoelectricity while maintaining the ferroelectricity possessed by a piezoelectric crystal powder contained in the piezoelectric paste contains the piezoelectric crystal powder containing a Pb(Zr, Ti)O system ceramic, a crystallized glass powder and an organic vehicle, wherein the crystallized glass powder used precipitates a Pb(Zr, Ti)O system solid solution phase by heat treatment.