公开(公告)号：US20240266332A1

公开(公告)日：2024-08-08

申请号：US18620480

申请日：2024-03-28

Applicant: Samsung Display Co., LTD.

Inventor： Hyung Rae CHA ,  Dong Uk KIM ,  Sung Ae JANG ,  Ji Hyun HAM

IPC: H01L25/075 ,  H01L27/12 ,  H01L33/00 ,  H01L33/22 ,  H01L33/42 ,  H01L33/44 ,  H01L33/62

CPC classification number: H01L25/0753 ,  H01L27/1214 ,  H01L33/007 ,  H01L33/0093 ,  H01L33/22 ,  H01L33/42 ,  H01L33/44 ,  H01L33/62 ,  H01L2933/0016 ,  H01L2933/0025

Abstract: A light-emitting element includes a first end portion and a second end portion disposed in a length direction of the light-emitting element, a first electrode corresponding to the first end portion, a first semiconductor layer on the first electrode, an active layer on the first semiconductor layer, a second semiconductor layer on the active layer, and a second electrode on the second semiconductor layer and corresponding to the second end portion. The second electrode includes a first layer on the first semiconductor layer, and a second layer on the first layer. The first semiconductor layer includes a p-type semiconductor layer doped with a p-type dopant. The second semiconductor layer includes an n-type semiconductor layer doped with an n-type dopant. The first electrode is in ohmic contact with the first semiconductor layer. The second electrode is in ohmic contact with the second semiconductor layer.

公开(公告)号：US20220336711A1

公开(公告)日：2022-10-20

申请号：US17694889

申请日：2022-03-15

Applicant: Samsung Display Co., LTD. ,  POSTECH Research and Business Development Foundation

Inventor： Se Young KIM ,  Jong Lam LEE ,  Won Seok CHO ,  Dong Uk KIM ,  Jae Yong PARK ,  Chul Jong YOO

IPC: H01L33/38 ,  H01L33/42

Abstract: A light-emitting element and a display device including the same are provided. The light-emitting element comprises a first semiconductor layer doped with an n-type dopant, a second semiconductor layer disposed below the first semiconductor layer and doped with a p-type dopant, a light-emitting layer disposed between the first semiconductor layer and the second semiconductor layer, a first intermediate layer disposed on the first semiconductor layer, and including a metal, and an electrode layer disposed on the first intermediate layer. Light from the light-emitting layer transmits through the first semiconductor layer, the first intermediate layer, and the electrode layer at a transmittance equal to or greater than about 70%.

公开(公告)号：US20220190204A1

公开(公告)日：2022-06-16

申请号：US17444803

申请日：2021-08-10

Applicant: Samsung Display Co., Ltd.

Inventor： Hyung Rae CHA ,  Dong Uk KIM ,  Young Chul SIM ,  Sung Ae JANG ,  Ji Hyun HAM

IPC: H01L33/38 ,  H01L25/075 ,  H01L33/00 ,  H01L33/40 ,  H01L33/42 ,  H01L33/44

Abstract: A light-emitting element includes: a first semiconductor layer including a first type semiconductor; a second semiconductor layer including a second type semiconductor different from the first type semiconductor; an active layer between one surface of the first semiconductor layer and one surface of the second semiconductor layer; a first electrode layer on another surface of the second semiconductor layer and having a first cross-sectional area; and a second electrode layer on another surface of the first semiconductor layer and having a second cross-sectional area smaller than the first cross-sectional area. A side surface of the light-emitting element defined by the first semiconductor layer, the active layer, the second semiconductor layer, and the second electrode layer is perpendicular to a main surface of the first electrode layer.

公开(公告)号：US20210167124A1

公开(公告)日：2021-06-03

申请号：US17265799

申请日：2019-01-14

Applicant: Samsung Display Co., Ltd.

Inventor： Jung Hong MIN ,  Dae Hyun KIM ,  Hyun Min CHO ,  Dong Uk KIM ,  Dong Eon LEE ,  Seung A LEE ,  Hyung Rae CHA

IPC: H01L27/15 ,  H01L33/12 ,  H01L33/22 ,  H01L33/38 ,  H01L33/40 ,  H01L33/00

Abstract: Provided are a light-emitting element, a manufacturing method thereof, and a display device comprising the light-emitting element. The method for manufacturing the light-emitting element comprises the steps of: preparing a lower substrate including a substrate and a buffer material layer formed on the substrate, forming a separating layer disposed on the lower substrate and including at least one graphene layer, forming an element deposition structure by depositing a first conductivity type semiconductor layer, an active material layer, and a second conductivity type semiconductor layer on the separating layer, forming an element rod by etching the element deposition structure and the separating layer in a vertical direction; and separating the element rod from the lower substrate to form a light emitting element.

公开(公告)号：US20250040293A1

公开(公告)日：2025-01-30

申请号：US18911451

申请日：2024-10-10

Applicant: Samsung Display Co., Ltd.

Inventor： Dong Uk KIM ,  Se Young KIM ,  Hyung Rae CHA

IPC: H01L33/00 ,  H01L33/24 ,  H01L33/38

Abstract: A light emitting element includes a semiconductor core having at least a partial region extending in a direction and including a first end, a second end, and a main body part between the first end and the second end; a first electrode layer surrounding the second end of the semiconductor core; a second electrode layer surrounding at least the first end of the semiconductor core and spaced apart from the first electrode layer; and an insulating layer surrounding the semiconductor core, the first electrode layer and the second electrode layer. The second end of the semiconductor core has a diameter smaller than a diameter of the main body part.

公开(公告)号：US20240357862A1

公开(公告)日：2024-10-24

申请号：US18543306

申请日：2023-12-18

Applicant: Samsung Display Co., LTD.

Inventor： Chaun Gi CHOI ,  Dong Uk KIM ,  Hyun Ho KIM ,  Hyoeng Ki KIM ,  Hyeon Bum LEE ,  Hoon Gi LEE

IPC: H10K59/121 ,  H10K59/126

CPC classification number: H10K59/1213 ,  H10K59/126

Abstract: A display device includes a substrate; a first active layer disposed on the substrate; and a first gate electrode overlapping a part of the first active layer, the first gate electrode having a hole, and the hole of the first gate electrode does not overlap the first active layer.

公开(公告)号：US20240313166A1

公开(公告)日：2024-09-19

申请号：US18597759

申请日：2024-03-06

Applicant: Samsung Display Co., LTD.

Inventor： Hyung Rae CHA ,  Jun Youn KIM ,  Dong Uk KIM ,  Myeong Hee KIM ,  Seul Ki KIM ,  Hee Keun LEE

IPC: H01L33/40 ,  H01L25/16 ,  H01L33/20

CPC classification number: H01L33/405 ,  H01L25/167 ,  H01L33/20 ,  H01L2933/0016

Abstract: A light emitting element, a display device including the same and a method of fabricating the same. The light emitting element may include an element rod including a first semiconductor layer, an active layer, and a second semiconductor layer. First and second contact electrodes may be respectively disposed on a first end surface and a second and opposite end surface of the element rod. A reflection layer may surround the first contact electrode and the element rod. An inner insulating layer may be disposed inside the reflection layer and surround the first contact electrode and the element rod. An outer insulating layer external to the reflection layer and may surround the first contact electrode and the element rod. A first inclination of side surfaces of the first semiconductor layer and the active layer and a second inclination of a side surface of the second semiconductor layer may be different.

公开(公告)号：US20240170614A1

公开(公告)日：2024-05-23

申请号：US18459325

申请日：2023-08-31

Applicant: Samsung Display Co., LTD.

Inventor： Mi Hyang SHEEN ,  Dong Uk KIM ,  Kwan Jae LEE ,  Bo Hwa KIM ,  Dong Youn YOO ,  Hyeong Su CHOI

IPC: H01L33/38 ,  H01L25/075 ,  H01L33/24 ,  H01L33/50 ,  H01L33/62

CPC classification number: H01L33/382 ,  H01L25/0753 ,  H01L33/24 ,  H01L33/502 ,  H01L33/62 ,  H01L2933/0016 ,  H01L2933/0041

Abstract: A light-emitting element comprises a first semiconductor layer, an active layer provided on the first semiconductor layer, a second semiconductor layer provided on the active layer, an electrode layer provided on the second semiconductor layer, and an insulating film around outer peripheral surfaces of the first semiconductor layer, the active layer, the second semiconductor layer, and the electrode layer, wherein the active layer includes a cover layer including a plurality of quantum dots, and the first semiconductor layer, the active layer, the second semiconductor layer, and the electrode layer are sequentially stacked in one direction to form a shape of a rod.

公开(公告)号：US20230215986A1

公开(公告)日：2023-07-06

申请号：US17882971

申请日：2022-08-08

Applicant: Samsung Display Co., LTD.

Inventor： Hyung Rae CHA ,  Dae Hyun KIM ,  Dong Uk KIM ,  Dong Kyun SEO ,  Young Chul SIM

IPC: H01L33/44 ,  H01L25/16

CPC classification number: H01L33/44 ,  H01L25/167 ,  H01L24/25

Abstract: A light-emitting element includes a core comprising a first semiconductor layer, a second semiconductor layer disposed on the first semiconductor layer, and an emissive layer disposed between the first semiconductor layer and the second semiconductor layer, an interlayer dielectric film surrounding a side surface of the core, a first element insulating film surrounding an outer surface of the interlayer dielectric film, and a second element insulating film surrounding an outer surface of the first element insulating film. The interlayer dielectric film includes an oxide insulating material having a dielectric constant of about 10 or more, and the interlayer dielectric film has a thickness of less than or equal to about 5 nm.

公开(公告)号：US20230123503A1

公开(公告)日：2023-04-20

申请号：US17905495

申请日：2020-06-05

Applicant: Samsung Display Co., LTD.

Inventor： Won Sik OH ,  Dong Uk KIM ,  Hyun Min CHO

IPC: H01L33/62 ,  H01L25/16 ,  H01L33/20

Abstract: A display includes: a first electrode including a first electrode line and a second electrode line; a light-emitting device between the first electrode line and the second electrode line; a first contact electrode including a first pattern overlapping the first electrode line and one end of the light-emitting device and a second pattern overlapping the second electrode line and the other end of the light-emitting device; a second electrode on the light-emitting device and overlapping the first electrode and the light-emitting device; and a second contact electrode between the light-emitting device and the second electrode, wherein a light-emitting device includes a plurality of semiconductor layers and an insulating film partially surrounding the external surfaces of the semiconductor layers, a main body unit, and a light-emitting unit on the main body unit and having a shorter length than the main body unit.