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:
Oct. 06, 2026
Filed:
Sep. 27, 2024
Seiko Epson Corporation, Tokyo, JP;
Dai Nozawa, Matsumoto, JP;
Noritaka Ide, Shiojiri, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
A drive circuit board includes a drive circuit that includes a first switching circuit including a first driver circuit configured to output a first drive signal and a first switching element configured to output a first switching signal, a second switching circuit including a second driver circuit configured to output a second drive signal and a second switching element configured to output a second switching signal corresponding to the first switching signal, a smoothing circuit configured to output the drive signal, and a stabilizing capacitor configured to stabilize a power supply voltage to be supplied to the first switching element and the second switching element, wherein a frequency of the first drive signal is higher than a frequency of the second drive signal, and a distance between the stabilizing capacitor and the first switching element is shorter than a distance between the stabilizing capacitor and the second switching element.