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公开(公告)号：US20210159418A1
公开(公告)日：2021-05-27
申请号：US16923047
申请日：2020-07-07
Applicant: Samsung Display Co., Ltd.
Inventor： Jimyoung Ye , Hyomin Ko
IPC: H01L51/00 , C07C211/61 , C09K11/06 , C07D209/86 , C07D401/12 , C07D409/14
Abstract: An organic light emitting diode includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region. The hole transport region includes a first hole transport layer which is directly disposed on the lower portion of the emission layer and has a first refractive index, and a second hole transport layer which is disposed on the lower portion of the first hole transport layer and has a second refractive index, thereby exhibiting an improved luminous efficiency characteristic.
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Patent Agency Ranking
公开(公告)号：US11895857B2
公开(公告)日：2024-02-06
申请号：US17212529
申请日：2021-03-25
Applicant: Samsung Display Co., Ltd.
CPC classification number: H10K50/156 , H10K85/624 , H10K85/633 , H10K85/6572 , H10K50/11 , H10K50/16 , H10K50/18
Abstract: An organic light emitting element includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer and including an electron transport layer, and a second electrode disposed on the electron transport region. The hole transport region may include a first hole transport layer having a first refractive index, a second hole transport layer disposed on the first hole transport layer and having a second refractive index less than the first refractive index, and a third hole transport layer disposed below the first hole transport layer and having a third refractive index less than the first refractive index. A difference between the first refractive index and the second refractive index, and a difference between the first refractive index and the third refractive index may each be about 0.1 to about 1.0.
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公开(公告)号：US11744147B2
公开(公告)日：2023-08-29
申请号：US17153310
申请日：2021-01-20
Applicant: Samsung Display Co., Ltd.
Inventor： Bora Lee , Hyomin Ko , Illhun Cho , Eunjae Jeong , Minji Kim , Sohee Jo , Dongjun Kim , Hankyu Pak , Sanghyun Han
IPC: H01L51/50 , H10K85/60 , C07C211/54 , C07C211/61 , C07D209/88 , C07D307/91 , C07D333/76 , H10K50/15 , H10K50/818 , H10K50/828 , H10K50/858 , H10K102/00
CPC classification number: H10K85/633 , C07C211/54 , C07C211/61 , C07D209/88 , C07D307/91 , C07D333/76 , H10K50/156 , H10K50/818 , H10K50/828 , H10K50/858 , H10K85/636 , C07C2601/14 , C07C2603/18 , C07C2603/74 , H10K85/615 , H10K85/626 , H10K85/6572 , H10K85/6574 , H10K85/6576 , H10K2102/3026 , H10K2102/351
Abstract: A light emitting diode of an embodiment includes a first electrode, a hole transport region disposed on the first electrode, an emission layer disposed on the hole transport region, an electron transport region disposed on the emission layer, and a second electrode disposed on the electron transport region. The hole transport region includes a first hole transport layer disposed adjacent to the first electrode and having a first refractive index, a second hole transport layer disposed adjacent to the emission layer and having a second refractive index, and a third hole transport layer disposed between the first hole transport layer and the second hole transport layer and having a third refractive index which is greater than each of the first refractive index and the second refractive index, thereby showing high light extraction efficiency and high emission efficiency properties.
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14.发明授权公开(公告)号：US11495778B2
公开(公告)日：2022-11-08
申请号：US17093284
申请日：2020-11-09
Applicant: Samsung Display Co., Ltd.
Abstract: A light emitting diode of an embodiment of the present disclosure includes a first electrode, a hole transport region on an upper portion of the first electrode and having a first refractive index, an emission layer on an upper portion of the hole transport region and having a second refractive index less than the first refractive index, an electron transport region on an upper portion of the emission layer, and a second electrode on an upper portion of the electron transport region.
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公开(公告)号：US11121196B2
公开(公告)日：2021-09-14
申请号：US16536428
申请日：2019-08-09
Applicant: Samsung Display Co., Ltd.
Inventor： Chang-Min Lee , Yujin Kang , Hyomin Ko , Daehyeon Kim , Juwon Lee
Abstract: Provided is a display device including a light emitting device and a light receiving device. The light receiving device includes a first light receiving electrode and a light receiving layer. The light receiving device receives a second light reflected from an external object and generates current.
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公开(公告)号：US10797114B2
公开(公告)日：2020-10-06
申请号：US16521133
申请日：2019-07-24
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Changmin Lee , Juwon Lee , Hyomin Ko , Sanggyun Kim
Abstract: An organic light-emitting display apparatus and a method of manufacturing the same are provided. An organic light-emitting display apparatus includes a first light-emitting unit including a first color light-emitting layer on an area of a substrate, a second light-emitting unit including a second color light-emitting layer spaced apart from the first color light-emitting layer, and a third light-emitting unit including a third color light-emitting layer as a common layer corresponding to both areas of the first color light-emitting layer and the second color light-emitting layer, and the first color light-emitting layer includes a lower light-emitting layer and an upper light-emitting layer that are stacked to have a multilayered structure.
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