公开(公告)号：US20240120439A1

公开(公告)日：2024-04-11

申请号：US18318811

申请日：2023-05-17

Applicant: Samsung Display Co., LTD.

Inventor： Seung A LEE ,  Bong Chun PARK ,  Kwan Jae LEE ,  Dong Eon LEE ,  So Young LEE

IPC: H01L33/06 ,  H01L33/00 ,  H01L33/02

CPC classification number: H01L33/06 ,  H01L33/0075 ,  H01L33/025 ,  H01L33/30

Abstract: A light emitting element includes a first semiconductor layer, an active layer disposed on the first semiconductor layer, a second semiconductor layer disposed on the active layer, and an insulating layer enclosing the first semiconductor layer, the active layer, and at least a portion of the second semiconductor layer. The first semiconductor layer, the active layer, and the second semiconductor layer are successively disposed in a first direction. The active layer includes a first barrier layer, a second barrier layer, and a first well layer disposed between the first barrier layer and the second barrier layer, and including a non-uniform indium composition ratio in a first direction and a second direction intersecting the first direction, and including a non-uniform indium density in a third direction intersecting the first direction and the second direction.

公开(公告)号：US20230395744A1

公开(公告)日：2023-12-07

申请号：US18111032

申请日：2023-02-17

Applicant: Samsung Display Co., LTD.

Inventor： Jong Won LEE ,  Bong Chun PARK ,  Kwan Jae LEE ,  So Young LEE ,  Jin Hyuk JANG ,  Chan Woo JOO ,  Seon Hong CHOI

IPC: H01L33/02 ,  H01L25/16 ,  H01L33/62

CPC classification number: H01L33/025 ,  H01L25/167 ,  H01L33/62

Abstract: A light emitting element may include a first semiconductor layer, a second semiconductor layer including a first area, a second area, and a third area that have different doping concentrations, an active layer disposed between the first semiconductor layer and the second semiconductor layer, and a first intermediate layer and a second intermediate layer that are disposed between at least one of the first area, the second area, and the third area. The first intermediate layer and the second intermediate layer may include different materials.

公开(公告)号：US20250081673A1

公开(公告)日：2025-03-06

申请号：US18819017

申请日：2024-08-29

Applicant: Samsung Display Co., LTD.

Inventor： So Young LEE ,  Bong Chun PARK ,  Kwan Jae LEE ,  Dong Eon LEE ,  Seung A LEE ,  Jong Jin LEE

IPC: H01L33/14 ,  H01L25/16 ,  H01L33/62

Abstract: A display device includes a first electrode and a second electrode spaced apart from each other, and light emitting elements disposed between the first electrode and the second electrode. Each of the light emitting elements include a first semiconductor layer, a second semiconductor layer disposed on the first semiconductor layer, and an active layer disposed between the first semiconductor layer and the second semiconductor layer. Each of the light emitting elements emits light with a wavelength in a range of about 464 nm to about 468 nm at a current density in a range of about 0.5 A/cm2 to about 100 A/cm2, and has a maximum external quantum efficiency greater than or equal to about 15%.

公开(公告)号：US20240284706A1

公开(公告)日：2024-08-22

申请号：US18545905

申请日：2023-12-19

Applicant: Samsung Display Co., LTD.

Inventor： Bong Chun PARK ,  Kwan Jae LEE ,  Dong Eon LEE ,  So Young LEE ,  Seung A LEE ,  Jong Jin LEE

IPC: H10K59/121 ,  C09K11/62 ,  H10K59/12 ,  H10K59/122 ,  H10K59/126 ,  H10K59/131 ,  H10K85/30

CPC classification number: H10K59/1213 ,  C09K11/62 ,  H10K59/1201 ,  H10K59/122 ,  H10K59/126 ,  H10K59/131 ,  H10K85/326

Abstract: A light emitting element includes: a first semiconductor layer of a first type; a first auxiliary layer on the first semiconductor layer and having a first indium composition ratio; a second auxiliary layer on the first auxiliary layer and having a second indium composition ratio; an active layer including barrier layers and well layers that are alternately arranged on the second auxiliary layer and having a third indium composition ratio; and a second semiconductor layer on the active layer and of a second type different from the first type. The second indium composition ratio is greater than the first indium composition ratio and is less than the third indium composition ratio.

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：US20240379728A1

公开(公告)日：2024-11-14

申请号：US18536838

申请日：2023-12-12

Applicant: Samsung Display Co., LTD.

Inventor： Seung A LEE ,  Bong Chun PARK ,  Kwan Jae LEE ,  Dong Eon LEE ,  So Young LEE

IPC: H01L27/15 ,  H01L33/24 ,  H01L33/32 ,  H01L33/44 ,  H01L33/50

Abstract: A display device includes a first electrode and a second electrode, spaced apart from each other, and light emitting elements disposed between the first electrode and the second electrode. Each of the light emitting elements includes a first semiconductor layer, a second semiconductor layer disposed on the first semiconductor layer, and an active layer disposed between the first semiconductor layer and the second semiconductor layer. A thickness of the active layer is in a range of about 1 nm to about 2.8 nm, the active layer includes InGa1-xN (about 0.18≤x≤about 0.20). The light emitting elements emit light with a wavelength in a range of about 462 nm to about 472 nm in a current density in a range of about 0.5 A/cm2 to about 100 A/cm2.

公开(公告)号：US20240162373A1

公开(公告)日：2024-05-16

申请号：US18362414

申请日：2023-07-31

Applicant: Samsung Display Co., LTD.

Inventor： Kwan Jae LEE ,  Bong Chun PARK ,  Dong Eon LEE ,  So Young LEE ,  Seung A LEE

IPC: H01L33/06 ,  H01L27/15 ,  H01L33/00 ,  H01L33/24 ,  H01L33/32 ,  H01L33/44

CPC classification number: H01L33/06 ,  H01L27/156 ,  H01L33/007 ,  H01L33/0093 ,  H01L33/24 ,  H01L33/32 ,  H01L33/44 ,  H01L2933/0025

Abstract: A light emitting element includes: a first semiconductor layer; an active layer provided on the first semiconductor layer; a second semiconductor layer provided on the active layer; and an insulative film around at least a portion of the first semiconductor layer, the active layer, and the second semiconductor layer, which are sequentially provided in a first direction. The active layer may include a first barrier layer, a first well layer, and a second barrier layer, which are sequentially provided in the first direction, and the first well layer may include first holes penetrating the first well layer.