Flüssigkeitsausstossvorrichtung und Treiberschaltung für Kapazitive Lasten

Details

Veröffentlichungs-Nr.

EP4725702

Anmeldetag

26. September 2025

Veröffentlichung

15. April 2026

Rechtsraum

EP

IPC

B41J2/045(NOZAWA DAI et al.)(CHAVARKAR PRASHANT et al.)

Abstract

A liquid ejecting apparatus includes a capacitive load drive circuit that outputs a drive signal for displacing a capacitive load. The capacitive load drive circuit includes a first gate drive circuit that outputs a first gate drive signal corresponding to a modulated signal output by a modulation circuit; a second gate drive circuit that outputs a second gate drive signal corresponding to the modulated signal; an amplification circuit that outputs an amplified modulated signal by driving of a first transistor driven in response to the first gate drive signal and a second transistor driven in response to the second gate drive signal; and a demodulation circuit that outputs the drive signal obtained by demodulating the amplified modulated signal. The first transistor and the second transistor include gallium nitride. The first gate drive circuit and the first transistor are accommodated in a single package and constitute a first semiconductor device. The second gate drive circuit and the second transistor are accommodated in a single package and constitute a second semiconductor device.

Anmelder

Firma

Seiko Epson Corporation

Land

🇯🇵 Japan