ALEXANDRIA, Va., April 2 -- United States Patent no. 12,267,649, issued on April 1, was assigned to AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) Co. LTD. (Shenzhen, China).
"Microphone chip" was invented by Kaijie Wang (Shenzhen, China) and Zhuanzhuan Zhao (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A microphone chip is provided and includes a substrate and a capacitive system. The capacitive system includes a diaphragm and a back plate. The diaphragm includes an inner membrane portion, an outer membrane portion, and at least one supporting portion. The inner membrane portion and the outer membrane portion of the microphone chip are separated by a slit, and the at least one supporting portion is ...