ALEXANDRIA, Va., March 17 -- United States Patent no. 12,581,793, issued on March 17, was assigned to BOE TECHNOLOGY GROUP Co. LTD. (Beijing).
"Organic light-emitting device and preparation method therefor, display panel, and display device" was invented by Xiaojin Zhang (Beijing), Xinghua Liu (Beijing), Huiyun Yang (Beijing) and Dan Wang (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "An organic light-emitting device and a preparation method therefor, a display panel, and a display device. The organic light-emitting device comprises an anode layer, a cathode layer, and a first light-emitting layer and an auxiliary light-emitting layer disposed between the anode layer and the cathode layer; the auxil...