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. 17, 2021
Filed:
Feb. 26, 2020
Seiko Epson Corporation, Tokyo, JP;
Dai Nozawa, Matsumoto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A driving circuit generating a driving signal, includes a modulator generating a modulated signal by performing pulse modulation on a signal specifying a waveform of the driving signal, an amplifier generating an amplified signal by amplifying the modulated signal, and a smoothing section generating the driving signal by smoothing the amplified signal. The amplifier includes first and second transistors coupled in series between a voltage line to which a voltage which is higher than a ground voltage is supplied and a grounding conductor to which the ground voltage is supplied, and a third transistor having a drain electrode coupled to a gate electrode of the second transistor and a source electrode coupled to the grounding conductor. The first and second transistors are exclusively set to an On state in accordance with the modulated signal, and the amplified signal is output from a node which couples the first and second transistors.