公开(公告)号：US20190237705A1

公开(公告)日：2019-08-01

申请号：US16381035

申请日：2019-04-11

Applicant: Samsung Display Co., Ltd.

Inventor： Tae-WooK KANG ,  Dong-Won Han ,  Young-Seo Choi ,  Jin-Ho Kwack

IPC: H01L51/52 ,  H01L51/56

CPC classification number: H01L51/5256 ,  H01L51/56 ,  H01L2251/301 ,  H01L2251/303

Abstract: An organic light emitting display apparatus including a substrate, an organic light emitting portion comprising a plurality of organic light emitting devices formed on the substrate, and an encapsulation portion for encapsulating the organic light emitting portion. The encapsulation portion includes a porous layer formed on the organic light emitting portion, a planarization layer formed on the porous layer, and a barrier layer formed on the planarization layer. The porous layer prevents impurities from being concentrated at a part of the porous layer.