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:
Oct. 27, 2015
Filed:
Sep. 12, 2014
Satoshi Mizukami, Kanagawa, JP;
Takeshi Sano, Kanagawa, JP;
Naoya Kondo, Kanagawa, JP;
Masaki Kato, Tokyo, JP;
Satoshi Mizukami, Kanagawa, JP;
Takeshi Sano, Kanagawa, JP;
Naoya Kondo, Kanagawa, JP;
Masaki Kato, Tokyo, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An electromechanical transducer element includes a substrate; a first electrode formed on the substrate as a common electrode; an electromechanical transducer membrane formed on the first electrode; a second electrode formed on the electromechanical transducer membrane as an individual electrode; a first insulation protection membrane formed on the first and the second electrode; a third electrode electrically connected to the first electrode; a fourth electrode electrically connected to the second electrode; a second insulation protection membrane including a common electrode pad formed on the third electrode and plural individual electrode pads formed on the fourth electrode; and a fifth electrode formed so as to surround a vicinity of at least one of the individual electrode pads disposed at end parts. Further, the fifth electrode is formed on the first insulation protection membrane and is electrically connected to the first electrode.