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:
Nov. 22, 2016
Filed:
Jan. 08, 2016
Seiko Epson Corporation, Tokyo, JP;
Matsutaro Naito, Minowa-machi, JP;
Tsuyoshi Miyashita, Ina, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A resonator element includes a thick section, a middle section and a thin section, in which at least the thick section performs thickness shear vibration, in which a first step difference is provided at a boundary between the thick section and the middle section, and a second step difference is provided at a boundary between the middle section and the thin section, on one side of a direction of the thickness shear vibration, in which a first antinode of flexural vibration is located between the first step difference and the second step difference, and in which, a distance between the first antinode and the first step difference is indicated by d1, a distance between the first antinode and the second step difference is indicated by d2, and a wavelength of the flexural vibration is indicated by λ, a relationship of 0≦d1≦λ/8 and 0≦d2≦λ/8 is satisfied.