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:
Feb. 27, 2018
Filed:
Oct. 17, 2016
Seiko Epson Corporation, Tokyo, JP;
Yasuyuki Matsumoto, Azumino, JP;
Shuichi Tanaka, Chino, JP;
Tsuyoshi Yoda, Matsumoto, JP;
Naohiro Nakagawa, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid ejecting head includes a first substrate in which a piezoelectric element is provided; and a second substrate on which the first substrate is connected to a first surface, in which the second substrate is provided with a penetration hole, which penetrates through the second substrate in a plate thickness direction, and penetration wiring, which is formed from a conductor that is formed in an inner portion of the penetration hole, the penetration wiring is formed from a first end portion, which is provided on a first surface side, a second end portion, which is provided on a second surface side, which is a surface that is on an opposite side to the first surface, and connection wiring, which connects the first end portion and the second end portion, and a cross-sectional area of the connection wiring in a planar direction of the first surface is smaller than cross-sectional areas of the first end portion and the second end portion in the planar direction.