ALEXANDRIA, Va., June 25 -- United States Patent no. 12,342,672, issued on June 24, was assigned to BOE Technology Group Co. Ltd. (Beijing).
"Organic light emitting device and display device" was invented by Kun Ma (Beijing), Lei Chen (Beijing) and Rongrong Gao (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides an organic light emitting device, including a first electrode, a second electrode and an emitting layer disposed between the first electrode and the second electrode. A hole transporting layer is disposed between the first electrode and the emitting layer. An electron transporting layer is disposed between the second electrode and the emitting layer. The ratio of t...