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. 02, 2022
Filed:
Jun. 28, 2018
Seiko Epson Corporation, Tokyo, JP;
Yukimune Watanabe, Hokuto, JP;
Noriyasu Kawana, Matsumoto, JP;
Abstract
A single crystal substrate is provided and is characterized in that the single crystal substrate has a foundation substrate provided with a plurality of first grooves, which include a first crystal face and a second crystal face opposed to the first crystal face in an inner face thereof, and the extending direction of which is a<110> direction, and a plurality of second grooves, the extending direction of which intersects with the first grooves, and in which the first grooves are formed in a displaced manner in a depth direction, and a transverse cross-sectional shape of the second groove is a shape in which straight lines are open at an opening angle less than 180°. Further, it is preferred that an angle formed by the first crystal face and the second crystal face is more than 70.6°.