ALEXANDRIA, Va., March 17 -- United States Patent no. 12,581,790, issued on March 17, was assigned to SAMSUNG DISPLAY Co. LTD. (Gyeonggi-do, South Korea) and SAMSUNG ELECTRONICS Co. LTD. (Gyeonggi-do, South Korea).

"Eletroluminescent device including polycarboxylic acid compound and halogen at interface between electron transport layer and light emitting layer, and production method thereof" was invented by Kwanghee Kim (Suwon-si, South Korea), Taehyung Kim (Suwon-si, South Korea), Hong Kyu Seo (Suwon-si, South Korea), Wonsik Yoon (Suwon-si, South Korea) and Eun Joo Jang (Suwon-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electroluminescent device including a first electrode; a second el...