ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,750,033, issued on Sept. 29, was assigned to AAC Technologies (Nanjing) Co. Ltd. (Nanjing, China).
"Film bulk acoustic resonator" was invented by Zhang Zhang (Nanjing, China), Shuai Yang (Nanjing, China), Ke Wu (Nanjing, China), Zhiqiang Zhuang (Nanjing, China), Lirong Zhang (Nanjing, China) and Chao Wang (Nanjing, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a FBAR, which includes a substrate, an acoustic reflector, a first electrode, a piezoelectric layer, a second electrode, and an etch-stop layer. The acoustic reflector is arranged on the substrate, the first electrode is arranged on a side of the substrate an...