US Patent Issued to QUALCOMM on April 22 for "Audio speaker and proximity sensor with piezoelectric polymer technology" (California Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,284,481, issued on April 22, was assigned to QUALCOMM Inc. (San Diego).

"Audio speaker and proximity sensor with piezoelectric polymer technology" was invented by Jessica Liu Strohmann (Cupertino, Calif.), Hrishikesh Vijaykumar Panchawagh (Cupertino, Calif.), Nicholas Ian Buchan (San Jose, Calif.), Yipeng Lu (Davis, Calif.) and Kostadin Dimitrov Djordjev (Los Gatos, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mobile device includes one or more piezoelectric polymer layers underlying a display. The one or more piezoelectric polymer layers may be electrically driven to operate in either a d33 stretching mode or a d31 bending mode. The mobile de...