ALEXANDRIA, Va., June 17 -- United States Patent no. 12,317,044, issued on May 27, was assigned to AAC Kaital Technologies (Wuhan) Co. LTD (Wuhan, China).
"MEMS piezoelectric speaker" was invented by Yu Shen (Shenzhen, China), Yiwei Zhou (Shenzhen, China), Qiang Dan (Shenzhen, China) and Yang Li (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a MEMS piezoelectric speaker including a substrate with a back cavity, a diaphragm, a capacitive system and a flexible film. The diaphragm includes a fixed end, a suspended end. Adjacent suspended ends are at least partially spaced to form a slit. The suspended end includes a support section and a piezoelectric section. Alo...