公开(公告)号：US20190131580A1

公开(公告)日：2019-05-02

申请号：US16168056

申请日：2018-10-23

Applicant: LG Display Co., Ltd.

Inventor： Woo-Ram YOUN ,  Yong-Hoon CHOI

IPC: H01L51/52 ,  H01L51/50 ,  H01L27/32

Abstract: The present disclosure relates to an organic light-emitting diode (OLED) display, and more particularly, to an OLED display having improved light extraction efficiency. According to the present disclosure, since a plurality of holes are formed in a first electrode of a light-emitting diode and a insulating material is disposed in each of the holes, an organic light-emitting layer and a second electrode constitute a microlens, thereby improving light extraction efficiency of the OLED display. As a result, brightness may be improved, and power consumption may be reduced. In particular, since the plurality of holes are formed in the first electrode and the insulating material is disposed in each of the plurality of holes, an interface between the insulating material and the first electrode is decreased, thereby further improving light extraction efficiency.

公开(公告)号：US20190103587A1

公开(公告)日：2019-04-04

申请号：US16141468

申请日：2018-09-25

Applicant: LG DISPLAY CO., LTD.

Inventor： Kang-Ju LEE ,  Min-Geun CHOI ,  Jin-Tae KIM ,  Yong-Hoon CHOI

IPC: H01L51/52 ,  H01L27/32

CPC classification number: H01L51/5268 ,  H01L27/32 ,  H01L51/5209 ,  H01L51/5212 ,  H01L51/5218 ,  H01L51/5271 ,  H01L2251/558

Abstract: An organic light emitting diode (OLED) lighting apparatus includes a substrate including a plurality of emission areas and a plurality of non-emission areas surrounding edges of the plurality of emission areas, an overcoat layer disposed on the substrate and having a first non-flat top surface in at least one of the emission areas and a second non-flat top surface in at least one of the non-emission area, an auxiliary electrode disposed on the second non-flat top surface and including a reflective material, a first electrode disposed on the first non-flat top surface in at least one of the emission areas and disposed on the auxiliary electrode in the non-emission areas, an organic emitting layer on the first electrode, and a second electrode on the organic emitting layer, wherein the auxiliary electrode and the first electrode are in electrical contact with each other.