US Patent Issued to BEIJING SUMMER SPROUT TECHNOLOGY on Oct. 28 for "Stacked organic electroluminescent device" (Chinese Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,538, issued on Oct. 28, was assigned to BEIJING SUMMER SPROUT TECHNOLOGY Co. LTD. (Beijing).

"Stacked organic electroluminescent device" was invented by Jing Wang (Beijing), Huiqing Pang (Beijing), Zhihao Cui (Beijing), Chi Yuen Raymond Kwong (Beijing) and Chuanjun Xia (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a stacked organic electroluminescence device. At least one light-emitting unit of the stacked organic electroluminescent device includes an organic layer including a specific combination of a P-type material with a deep LUMO energy level and a hole transporting material with a deep HOMO energy level. Meanwhile, a P-ty...