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:
Feb. 17, 2026
Filed:
Mar. 21, 2024
Seiko Epson Corporation, Tokyo, JP;
Noritaka Ide, Shiojiri, JP;
Kunio Tabata, Shiojiri, JP;
Dai Nozawa, Matsumoto, JP;
Rika Tanimoto, Matsumoto, JP;
Satoru Uematsu, Shiojiri, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
A drive circuit includes a modulation circuit that outputs a modulation signal, a level switching signal generation circuit that generates a level switching signal, an amplification level shift circuit that includes a first switching element and a second switching element that perform switching in response to the modulation signal, and a third switching element and a fourth switching element that perform switching in response to the level switching signal, outputs an amplified modulation signal obtained by amplifying the modulation signal, or outputs a signal obtained by shifting a potential of the amplified modulation signal, and a demodulation circuit that demodulates the signal output from the amplification level shift circuit, and outputs the drive signal. On-resistances of the first switching element and the second switching element are larger than an on-resistance of the third switching element and an on-resistance of the fourth switching element.