Elektroakustischer Hochleistungswandler mit Niedrigem Stromverbrauch

Details

Veröffentlichungs-Nr.

EP4718876

Anmeldetag

22. September 2025

Veröffentlichung

1. April 2026

Rechtsraum

EP

IPC

H04R17/00, H04R7/12, H04R17/02(WU PENGCHENG et al.)

Abstract

A microelectromechanical electroacoustic transducer includes: a supporting frame (12) containing semiconductor material; a membrane (13) of semiconductor material connected to the supporting frame (12) along a perimeter; a piezoelectric transducer (15) on a central portion (13c) of the membrane (13). The piezoelectric transducer (15) is configured to cause a deflection at rest of the membrane (13) from a planar configuration towards a first side (13d) of the membrane (13), in the absence of electrical stimuli to the piezoelectric actuator (15), and to cause an induced deflection of the membrane (13) opposite to the deflection at rest towards a second side (13e) of the membrane (13) in response to an electrical driving signal (V<D>).

Anmelder

Firma

STMicroelectronics International N.V.

Land

🇨🇭 Schweiz