公开(公告)号：US20210210686A1

公开(公告)日：2021-07-08

申请号：US16999749

申请日：2020-08-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sijin SUNG ,  Hyomin KIM ,  Illsoo PARK ,  Gina YOO ,  Jongseok HAN

IPC: H01L51/00 ,  H01L27/32 ,  H01L51/56

Abstract: A method of manufacturing a display apparatus includes: forming a pixel electrode on a substrate; forming a pixel defining layer covering at least an edge of the pixel electrode and including an opening exposing a part of the pixel electrode; performing first dry cleaning by adding oxygen gas (O2) to a surface of the pixel electrode exposed by the opening in the pixel defining layer, wherein the oxygen gas (O2) is added at a flow rate in a range of about 1,200 sccm to about 3,600 sccm; performing second dry cleaning after the first dry cleaning; forming an intermediate layer on the pixel electrode after the second dry cleaning; and forming an opposite electrode on the intermediate layer and the pixel defining layer.

公开(公告)号：US20210184148A1

公开(公告)日：2021-06-17

申请号：US17033774

申请日：2020-09-26

Applicant: Samsung Display Co., Ltd.

Inventor： Hyomin KIM ,  Illsoo PARK ,  Sijin SUNG ,  Gina YOO ,  Sunhwa KIM ,  Jaehong KIM ,  Heeseong JEONG ,  Jongseok HAN

IPC: H01L51/50 ,  H01L51/00 ,  H01L27/32

Abstract: A light-emitting device includes: a substrate including a first subpixel, as second subpixel, and a third subpixel; a plurality of first electrodes respectively in the first subpixel, the second subpixel, and the third subpixel of the substrate; a second electrode facing the first electrode; an emission layer located between the plurality of first electrodes and the second electrode; a hole injection layer between the plurality of first electrodes and the emission layer; a first common layer between the hole injection layer and the emission layer, the first common layer integrated with the first subpixel, the second subpixel, and the third subpixel; a second common layer between the hole injection layer and the first common layer, the second common layer integrated with the first subpixel, the second subpixel, and the third subpixel, wherein the first common layer and the second common layer satisfy certain conditions. In particular, the first common layer consists of a blue host, and the blue host satisfies Equations 1 and 2: |EHOMO_BH|>|EHOMO_REML|  Equation 1 |EHOMO_BH|>|EHOMO_GEML|.  Equation 2

公开(公告)号：US20190207118A1

公开(公告)日：2019-07-04

申请号：US16234306

申请日：2018-12-27

Applicant: Samsung Display Co., Ltd.

Inventor： Jaeyong LEE ,  Gina YOO ,  Sunjin JOO

IPC: H01L51/00 ,  C07D251/24 ,  C07D213/16 ,  C07D239/26 ,  C07D401/14

CPC classification number: H01L51/0067 ,  C07D213/16 ,  C07D239/26 ,  C07D251/24 ,  C07D401/14 ,  H01L27/3248 ,  H01L51/001 ,  H01L51/0072 ,  H01L51/5016 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5206 ,  H01L51/5221 ,  H01L51/56 ,  H01L2251/308 ,  H01L2251/5384 ,  H01L2251/558

Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode and including an emission layer. The emission layer includes at least one doping layer and at least one non-doping layer. The doping layer comprises a first host, a second host, and a dopant.