US Patent Issued to Beijing BOE Technology Development, BOE TECHNOLOGY GROUP on Aug. 19 for "Light-emitting device and preparation method thereof, display substrate and display device" (Chinese Inventor)

ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,874, issued on Aug. 19, was assigned to Beijing BOE Technology Development Co. Ltd. (Beijing) and BOE TECHNOLOGY GROUP Co. LTD. (Beijing).

"Light-emitting device and preparation method thereof, display substrate and display device" was invented by Wenhai Mei (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a light-emitting device, comprising: a first carrier transport layer disposed on a substrate; and a light-emitting layer disposed on a side of the first carrier transport layer away from the substrate; wherein the first carrier transport layer comprises a first transport sublayer comprising nanoparticles and ...