ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,483,841, issued on Nov. 25, was assigned to AAC Technologies Pte. Ltd. (Singapore).
"MEMS microphone" was invented by Yuwei Liu (Singapore), Colin Robert Jenkins (Eb, Great Britain) and Rui Zhang (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A MEMS microphone, includes a substrate with a back cavity, and a capacitive system arranged on the substrate, the capacitive includes a back plate and a diaphragm, a reinforcing portion is located between the diaphragm and the substrate, a projection of an inner surface of the reinforcing portion along a vibration direction of the diaphragm is flush with an inner surface of the back cavity or loca...