ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,477,892, issued on Nov. 18, was assigned to Beijing BOE Technology Development Co. Ltd. (Beijing).
"Light-emitting device and method for manufacturing the same, light-emitting substrate and light-emitting apparatus" was invented by Xiaojin Zhang (Beijing), Xinghua Liu (Beijing), Huiyun Yang (Beijing) and Changho Lee (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light-emitting device includes a first light-emitting layer and a second light-emitting layer that are stacked. A material of the first light-emitting layer includes a first host material and a first TADF sensitizer. A material of the second light-emitting layer includes a second host...