公开(公告)号：US10347868B2

公开(公告)日：2019-07-09

申请号：US15334181

申请日：2016-10-25

Applicant: Samsung Display Co., Ltd.

Inventor： Minho Oh ,  Jongwoo Kim ,  Jiyoung Moon ,  Seungjae Lee ,  Yoonhyeung Cho ,  Youngcheol Joo ,  Jaeheung Ha

IPC: H01L51/52 ,  H01L27/32 ,  H01L51/56 ,  G02F1/1362 ,  H01L29/786 ,  G02F1/1333

Abstract: A display device includes a display substrate including at least one step portion, and a thin film encapsulation layer above the display substrate, the thin film encapsulation layer including a buffer layer configured to reduce a height difference due to the at least one step portion and a barrier layer above the buffer layer, the buffer layer including a plurality of sub-layers and interfaces between the plurality of sub-layers, and the interfaces including a curved surface changing from a concave shape to a convex shape toward a portion overlapping the step portion from an outer portion of the step portion.

公开(公告)号：US20180159083A1

公开(公告)日：2018-06-07

申请号：US15832010

申请日：2017-12-05

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Donghoon Kim ,  Dongchan Kim ,  Wonjong Kim ,  Wonmin Yun ,  Byoungduk Lee ,  Jihye Lee ,  Sanghoon Yim ,  Yoonhyeung Cho ,  Youngcheol Joo ,  Wonsuk Han

IPC: H01L51/52 ,  H01L27/32

CPC classification number: H01L51/5275 ,  H01L27/3244 ,  H01L27/3272 ,  H01L51/5253 ,  H01L51/5256

Abstract: An organic light emitting display device includes: a substrate; an organic light emitting element on the substrate; and a thin film encapsulation layer on the organic light emitting element. The thin film encapsulation layer includes a first thin film, a second thin film and a third thin film which are sequentially stacked therein, a refractive index of the second thin film is about 1.7 or greater, and a refractive index of the first thin film and a refractive index of the third thin film are greater than the refractive index of the second thin film by about 0.35 or greater.