公开(公告)号：US20230075253A1

公开(公告)日：2023-03-09

申请号：US17866937

申请日：2022-07-18

Applicant: LG DISPLAY CO., LTD.

Inventor： Yong-Il KIM ,  Byungjin KIM ,  Jinkwon PARK ,  Wooseok JEONG

IPC: H01L51/52 ,  H01L27/32

Abstract: An electroluminescent display device includes a substrate divided into a display area and a non-display area, a first light-blocking layer and a data line disposed on the substrate in the display area, a first buffer layer disposed on the first light-blocking layer and the data line, a semiconductor layer disposed on an upper portion of the first buffer layer and made of an oxide semiconductor, a gate insulating layer disposed on the semiconductor layer, a gate electrode disposed on the gate insulating layer, a protective layer and a first planarization layer disposed on an upper portion of the gate electrode, a drain electrode disposed on the protective layer exposed by removing a partial area of the first planarization layer, a second planarization layer disposed on the drain electrode and the first planarization layer, and a light-emitting element disposed on an upper portion of the second planarization layer and including an anode, a light-emitting part, and a cathode.