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公开(公告)号：US11832467B2
公开(公告)日：2023-11-28
申请号：US17223952
申请日：2021-04-06
Applicant: Samsung Display Co., Ltd.
Inventor： Hyosup Shin , Tsuyoshi Naijo , Hyunyoung Kim , Dongyoun Yoo , Jiyoung Lee
IPC: H10K50/12 , H10K59/12 , H10K59/38 , H10K85/30 , H10K85/60 , H10K101/30 , H10K101/20 , H10K101/00
CPC classification number: H10K50/121 , H10K59/12 , H10K59/38 , H10K85/322 , H10K85/342 , H10K85/6572 , H10K2101/20 , H10K2101/30 , H10K2101/80
Abstract: A light-emitting device including a first electrode; a second electrode facing the first electrode; and interlayer arranged between the first electrode and the second electrode and including an emission layer, wherein the emission layer includes a first emission layer and a second emission layer, the first emission layer includes a first dopant, wherein the second dopant is an electron-trapping dopant, and the second emission layer includes a third dopant and a fourth dopant, wherein the fourth dopant is a hole-trapping dopant.
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公开(公告)号：US20200058719A1
公开(公告)日：2020-02-20
申请号：US16541467
申请日：2019-08-15
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Kiyoung Yeon , Haeyoung Yun , Junghyun Cho , Younggil Park , Dongyoun Yoo , Wooyoung Lee , Sooim Jeong
Abstract: An organic light-emitting display apparatus includes a substrate; thin film transistors; a protective layer that includes a plurality of concave-convex units disposed in a pixel area; an organic light-emitting device disposed on the protective layer; and an encapsulation unit that covers the organic light-emitting device. Each of the concave-convex units protrudes from a surface of the protective layer. The organic light-emitting device includes a pixel electrode, an emission layer, and an opposite layer sequentially stacked on the concave-convex unit, and a distance between the pixel electrode and the opposite electrode is determined by 5%≤(a/b)≤18%, wherein ‘a’ is a vertical distance with respect to the surface of the protective layer between the pixel electrode and the opposite electrode and ‘b’ is a minimum distance between the pixel electrode and the opposite electrode.
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公开(公告)号：US11233103B2
公开(公告)日：2022-01-25
申请号：US16541467
申请日：2019-08-15
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Kiyoung Yeon , Haeyoung Yun , Junghyun Cho , Younggil Park , Dongyoun Yoo , Wooyoung Lee , Sooim Jeong
Abstract: An organic light-emitting display apparatus includes a substrate; thin film transistors; a protective layer that includes a plurality of concave-convex units disposed in a pixel area; an organic light-emitting device disposed on the protective layer; and an encapsulation unit that covers the organic light-emitting device. Each of the concave-convex units protrudes from a surface of the protective layer. The organic light-emitting device includes a pixel electrode, an emission layer, and an opposite layer sequentially stacked on the concave-convex unit, and a distance between the pixel electrode and the opposite electrode is determined by 5%≤(a/b)≤18%, wherein ‘a’ is a vertical distance with respect to the surface of the protective layer between the pixel electrode and the opposite electrode and ‘b’ is a minimum distance between the pixel electrode and the opposite electrode.
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公开(公告)号：US20220077416A1
公开(公告)日：2022-03-10
申请号：US17223952
申请日：2021-04-06
Applicant: Samsung Display Co., Ltd.
Inventor： Hyosup Shin , Tsuyoshi Naijo , Hyunyoung Kim , Dongyoun Yoo , Jiyoung Lee
IPC: H01L51/50
Abstract: A light-emitting device including a first electrode; a second electrode facing the first electrode; and interlayer arranged between the first electrode and the second electrode and including an emission layer, wherein the emission layer includes a first emission layer and a second emission layer, the first emission layer includes a first dopant, wherein the second dopant is an electron-trapping dopant, and the second emission layer includes a third dopant and a fourth dopant, wherein the fourth dopant is a hole-trapping dopant.
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