ALEXANDRIA, Va., June 16 -- United States Patent no. 12,306,484, issued on May 20, was assigned to WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY Co. LTD. (Hubei, China).
"Privacy film and display device" was invented by Wenlong Ye (Hubei, China) and Wei Cheng (Hubei, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A privacy film and a display device are provided. The privacy film includes a first polarizer, a first electrode layer, a dimming liquid crystal layer, a second electrode layer, and a second polarizer. The first polarizer, the first electrode layer, the dimming liquid crystal layer, the second electrode layer, and the second polarizer are stacked in sequence, so that multi-angle privacy protecti...