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.:

US 9090057 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 28, 2015

Filed:

Dec. 03, 2013
Applicant:

Seiko Epson Corporation, Tokyo, JP;

Inventors:

Takafumi Koda, Matsumoto, JP;

Isamu Togashi, Matsumoto, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/045 (2006.01); B41J 2/14 (2006.01); H01L 41/047 (2006.01);
U.S. Cl.
CPC ...
B41J 2/045 (2013.01); B41J 2/14274 (2013.01); H01L 41/0471 (2013.01); H01L 41/0477 (2013.01); B41J 2002/14491 (2013.01); B41J 2202/11 (2013.01);
Abstract

In an inactive region, a farthest dummy electrode formed in a base end portion and an isolated dummy electrode island are located at positions along an extension from an individual internal electrode toward the base end portion. Such a configuration allows the area of the dummy electrode to be reduced, compared with a dummy electrode continuously formed in the inactive region. Therefore, the cost incurred by the dummy electrode is reduced, which leads to reduction in manufacturing cost of a piezoelectric unit.


Find Patent Forward Citations

Koda, Takafumi. (2015). Piezoelectric unit, liquid ejecting head, and liquid ejecting apparatus (U.S. Patent No. 9090057). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9090057

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