▎ 摘　　要

NOVELTY - QLED device comprise cathode layer, a quantum dot light-emitting layer, a hole composite layer and an anode layer sequentially arranged. The hole composite layer comprises a hole functional layer and an aromatic amino acid film layer provided on the surface of the hole functional layer. USE - Used as QLED device. ADVANTAGE - The device has reduced damage caused by external light sources and leakage current, and improved performance and lifetime. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: manufacturing the device. display panel. DESCRIPTION OF DRAWING(S) - The drawing shows a structural schematic diagram of QLED device. 100Qled device 110Cathode 120Electronic functional layer 130Quantum dot light emitting layer 140Hole composite layer 150Layer anode 1401Hole function layer 1402Aromatic amino acid film layer