▎ 摘　　要

NOVELTY - The device (10) has a patterned insulating layer that is arranged on the first functional layer (100), for partially exposing the first functional layer. A patterned second electrode is arranged on the patterned insulating layer. The orthographic projection of the patterned second electrode on the first functional layer is located within the orthographic projection of the patterned insulating layer corresponding to the patterned second electrode on the first functional layer. A luminescent layer is arranged on the first functional layer, for covering the patterned second functional layer (200) and the first functional layer. One of the first functional layer and the patterned second functional layer is an electronic functional layer, while other is a hole functional layer, and the electronic functional layer is close to the cathode, and the hole functional layer is close to the anode. USE - Light-emitting device. ADVANTAGE - The orthographic projection of the patterned second electrode on the first functional layer is set to be located in the orthographic projection of the patterned insulating layer on the first functional layer, so as to avoid the patterning of the second functional layer and the first functional layer. The leakage problem of the light-emitting device is avoided and the performance of the light-emitting device is improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing light-emitting device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the light-emitting device. 10Light-emitting device 100First functional layer 400Second functional layer 500Light-emitting layer 600First electrode