ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,527,158, issued on Jan. 13, was assigned to BOE Technology Group Co. Ltd. (Beijing).

"Quantum dot light emitting device comprising three sub-function layers with different surface energy of ligands, preparation method thereof and display apparatus" was invented by Wenhai Mei (Beijing) and Yichi Zhang (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a quantum dot light emitting device, a preparation method thereof and a display apparatus. In embodiments of the present disclosure, at least one of one or more light emitting function layers is disposed to include at least two sub-function layers, each sub-function layer includes ligands...