公开(公告)号：US20230189556A1

公开(公告)日：2023-06-15

申请号：US17973497

申请日：2022-10-25

Applicant: LG Display Co., Ltd.

Inventor： Sungjin Bang ,  JungHyun Ham ,  Taeseong Han

IPC: H01L51/52 ,  H01L27/32

CPC classification number: H01L51/5271 ,  H01L27/322 ,  H01L27/3218 ,  H01L51/5293

Abstract: A light emitting display apparatus comprises a substrate comprising a light emitting surface and a plurality of pixels having an emission area; a pixel circuit layer comprising a plurality of insulating layers over the substrate; a protection layer disposed over the pixel circuit layer; a light extraction portion over the protection layer in the emission area, the light extraction portion comprising a plurality of concave portions, and a convex portion between the plurality of concave portions; a light emitting device layer on the light extraction portion, the light emitting device layer configured to emit light to the light emitting surface; and a light guide surface at one of the plurality of insulating layers and the protection layer at each of the plurality of pixels, the light guide surface is inclined with respect to the light emitting surface while overlapping with the emission area.