US Patent Issued to STMicroelectronics International on Sept. 1 for "PMUT array with resonance frequency tunable due to adjustable embedded cavity" (Italian Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,724,146, issued on Sept. 1, was assigned to STMicroelectronics International N.V. (Geneva).

"PMUT array with resonance frequency tunable due to adjustable embedded cavity" was invented by Domenico Giusti (Caponago, Italy), Marco Ferrera (Concoerezzo, Italy) and Fabio Quaglia (Pizzale, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "An array of piezoelectric micromachined ultrasound transducers (PMUTs) includes a substrate having first and second cavities buried therein. A first piezoelectric stack is carried by the substrate and at least partially overlays the first cavity. A second piezoelectric stack is carried by the substrate and at least parti...