Elektroakustischer Aktuator mit Verbesserten Schalldruckpegelleistungen

Details

Veröffentlichungs-Nr.

EP4718870

Anmeldetag

15. September 2025

Veröffentlichung

1. April 2026

Rechtsraum

EP

IPC

H04R7/06, H04R17/00

Abstract

An electroacoustic actuator (10) that is microelectromechanical includes: a supporting frame (12), containing semiconductor material; a membrane (13) of semiconductor material connected to the supporting frame (12) along a perimeter; a peripheral piezoelectric actuator (14) on a peripheral portion (13a) of the membrane (13); and a central piezoelectric actuator (15) on a central portion (13b) of the membrane (13). The electroacoustic actuator (10) further comprises: elastic elements (17), defined by respective portions of the membrane (13), wherein the central portion (13b) is connected to the peripheral portion (13a) of the membrane (13) by the elastic elements (17); and metal lines (30, 35, 36) extending on the peripheral portion (13a) of the membrane (13), on respective elastic elements (17) and on the central portion (13b) of the membrane (13), from the peripheral piezoelectric actuator (14) to the central piezoelectric actuator (15).

Anmelder

Firma

STMicroelectronics International N.V.

Land

🇨🇭 Schweiz