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. 04, 2020
Filed:
May. 08, 2019
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Toru Yamashita, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
A liquid discharge head is provided. The liquid discharge head includes: a semiconductor substrate including a first pressure chamber; an insulating film disposed above the semiconductor substrate; a first piezoelectric element disposed on an opposite side to the first pressure chamber of the insulating film and having a piezoelectric layer and a first and second electrode; and a doped layer formed in the semiconductor substrate. The doped layer partitions at least part of the first pressure chamber and has a lower electrical resistivity than the insulating film and the semiconductor substrate. A through hole having a conductor disposed on its inside is formed in the insulating film, and the first electrode and the doped layer are electrically continuous via the conductor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile