Provides enhanced sound quality and efficiency with small thin-film piezoelectric MEMS actuators

STMicroelectronics (hereinafter ST) and audio specialist USound GmbH have signed a cooperation agreement for the industrialization and production of miniature piezoelectric MEMS (Micro-Electro-Mechanical Systems) actuators for smart audio systems in portable devices, marking the world's first such agreement.

It was reported that Usound's patented micro-speaker technology aims to replace Balanced-Armature (BA) and Electrodynamic receivers, which are widely used in handsets equipped with small piezo MEMS actuators.

This actuator, produced using ST's Thin-Film Piezo-Electric (TFP) technology, can reduce heat dissipation and power consumption in listening devices or smartphones without compromising audio quality, while also improving scalability and cost.

Anton Hofmeister, Vice President and Head of ST’s MEMS Microactuator business unit, stated, “Usound’s technology and the transition to piezo-MEMS actuators will not only enhance semiconductor stability and manufacturing efficiency but, prior to that, provide customers with improved sound quality in portable devices.” He added, “This collaboration announcement demonstrates a significant step forward for ST, a global leader in consumer and mobile sensors, by expanding its MEMS portfolio through the use of ST’s exceptional actuation technology to target markets with high entry barriers but great potential.”

Ferruccio Bottoni, CEO of UsoundFerruccio Bottoni stated, “ST, with its outstanding semiconductor and MEMS expertise, is the ideal partner to bring innovative technologies never before seen to the market,” adding, “Compared to standard speakers, our piezo-MEMS devices offer not only unparalleled mechanical precision but also enhanced audio playback fidelity and device stability in an ultra-thin form factor. As the first device of its kind, our MEMS 'Moon' speaker targets earphone applications and offers competitive pricing and outstanding performance in the audio sector.”