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:
Dec. 01, 2020
Filed:
Nov. 21, 2019
Seiko Epson Corporation, Tokyo, JP;
Tetsuo Takagi, Okaya, JP;
Seiko Epson Corporation, , JP;
Abstract
There is provided a driving circuit that drives a piezoelectric element having a first electrode that is supplied a first voltage signal and a second electrode that is supplied a second voltage signal, and driven by a potential difference between the first electrode and the second electrode, the driving circuit including: a first voltage signal generation circuit that outputs the first voltage signal; a second voltage signal generation circuit that outputs the second voltage signal; and a switch circuit in which the first voltage signal is input from one end and the other end is electrically connected to the first electrode, a voltage value of the first voltage signal approaches a voltage value of the second voltage signal in a shift period from a first mode that is shifted after power is turned on to a second mode for driving the piezoelectric element.