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. 30, 2016
Filed:
Jul. 30, 2015
Seiko Epson Corporation, Tokyo, JP;
Go Yamashita, Ina, JP;
Seiko Epson Corporation, , JP;
Abstract
A resonator element includes a quartz crystal substrate having a main surface along a plane including an X-axis and a Z'-axis, and a thickness in a Y′-axis direction. The quartz crystal substrate includes a vibrating portion including a side along the X-axis, a side along the Z′-axis, and a peripheral portion having a thickness smaller than that of the vibrating portion, which is provided along an outer edge of the vibrating portion. The vibrating portion includes a first portion and a second portion having a thickness smaller than that of the first portion, which is provided on at least an outer edge on a +X side of the X-axis and an outer edge on a −X side thereof, among outer edges of the first portion. When Z is a length of the quartz crystal substrate along the Z′-axis, and t is a thickness of the first portion, 11<Z/t≦53.