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:
Aug. 12, 2003
Filed:
Jun. 22, 2001
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A method for manufacturing a piezoelectric device includes the steps of providing a piezoelectric substrate having a piezoelectric driving unit and laminating outer coating substrates on major surfaces thereof via adhesive layers. Each of the adhesive layers includes a first layer of an adhesive having a Shore D hardness after curing of not more than approximately 60 and disposed so as not to be exposed in a region of lateral side surfaces of the layered body provided with the external electrodes, second and third layers of an adhesive having a Shore D hardness of at least approximately 60, and the third layer of having a viscosity before curing of at least approximately 3.0×10 mPas at a temperature of 25° C. The third layer is disposed between the periphery of the first layer and the region of the lateral side surfaces of the layered body provided with the external electrodes.