US Patent Issued to Shenzhen Newsonic Technology on March 24 for "Manufacturing method of surface acoustic wave filter with back electrode of piezoelectric layer" (Chinese Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,587,155, issued on March 24, was assigned to Shenzhen Newsonic Technology Co. Ltd. (Shenzhen, China).

"Manufacturing method of surface acoustic wave filter with back electrode of piezoelectric layer" was invented by Guojun Weng (Shenzhen, China) and Gongbin Tang (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fabrication method of a surface acoustic wave (SAW) filter, includes: obtaining a piezoelectric substrate; forming a back electrode on a first portion of the piezoelectric substrate; forming a sacrificial layer on the first portion of the piezoelectric substrate, covering the back electrode; forming a first dielectric layer on th...