公开(公告)号：US20230268464A1

公开(公告)日：2023-08-24

申请号：US18074580

申请日：2022-12-05

Applicant: Samsung Display Co., LTD.

Inventor： Byung Ju LEE ,  Jin Wan KIM ,  Hoo Keun PARK ,  Young Jin SONG ,  Seung Geun LEE

IPC: H01L33/38 ,  H01L33/00 ,  H01L33/32

CPC classification number: H01L33/382 ,  H01L33/0075 ,  H01L33/325 ,  H01L2933/0016

Abstract: A method of manufacturing a light emitting element, comprises placing a plurality of mask patterns on a substrate, forming first patterns on the substrate through the plurality of mask patterns, the first patterns recessed from an upper surface of the substrate, forming an undoped semiconductor layer on the substrate on which the first patterns are formed, etching the undoped semiconductor layer, forming a first semiconductor layer on the undoped semiconductor layer, forming an active layer on the first semiconductor layer, forming a second semiconductor layer on the active layer, and forming an electrode layer on the second semiconductor layer, wherein the undoped semiconductor layer includes second patterns recessed from a lower surface of the undoped semiconductor layer.

公开(公告)号：US20220352422A1

公开(公告)日：2022-11-03

申请号：US17583800

申请日：2022-01-25

Applicant: Samsung Display Co., LTD.

Inventor： Byung Ju LEE ,  Dae Ho SONG ,  Jin Woo CHOI ,  Jin wan KIM ,  Seung Geun LEE

IPC: H01L33/38 ,  H01L33/50 ,  H01L33/00

Abstract: A display device includes a base substrate, a partitioning wall on the base substrate, wherein the partitioning wall includes a first partitioning wall, and a second partitioning wall on the first partitioning wall, and a light emitting element spaced from the partitioning wall and located in a space surrounded by the partitioning wall in a plan view. The first partitioning wall and the light emitting element include a same material. The second partitioning wall includes a transparent conductive oxide.

公开(公告)号：US20220173158A1

公开(公告)日：2022-06-02

申请号：US17520227

申请日：2021-11-05

Applicant: Samsung Display Co., Ltd.

Inventor： Seung Geun LEE ,  Byung Ju LEE ,  Hoo Keun PARK ,  Chul Jong YOO ,  Dong Eon LEE

IPC: H01L27/15 ,  H01L33/62 ,  H01L33/38

Abstract: A display device includes a first subpixel and a second subpixel, wherein the first subpixel includes a first light source unit including a plurality of first light-emitting elements configured to emit first light having a center wavelength of a first wavelength, the second subpixel includes a second light source unit including a plurality of second light-emitting elements configured to emit second light having a center wavelength of a second wavelength, the first light source unit includes first to nth light-emitting groups that are connected in series, each of the groups including the plurality of first light-emitting elements, the second light source unit includes first to mth light-emitting groups that are connected in series and each of the groups includes the plurality of second light-emitting elements, where n and m are natural numbers, and the second wavelength is different from the first wavelength.

公开(公告)号：US20220140019A1

公开(公告)日：2022-05-05

申请号：US17452538

申请日：2021-10-27

Applicant: Samsung Display Co., Ltd.

Inventor： Hoo Keun PARK ,  Seung Geun LEE ,  Won Sik OH ,  Byung Ju LEE ,  Seung A LEE

IPC: H01L27/32

Abstract: A display device includes a first substrate including a plurality of subpixels; a first electrode and a second electrode on the first substrate in each of the plurality of subpixels and spaced apart from each other; a plurality of light emitting elements having both ends on the first electrode and the second electrode, respectively; and a color control layer on the plurality of light emitting elements. The plurality of subpixels includes a first subpixel to display a first color and a second subpixel to display a second color different from the first color, and the plurality of light emitting elements includes first light emitting elements in the first subpixel and to emit light of a third color and second light emitting elements in the second subpixel and to emit light of the second color, wherein the third color is different from the first color and the second color.

公开(公告)号：US20220109023A1

公开(公告)日：2022-04-07

申请号：US17474688

申请日：2021-09-14

Applicant: Samsung Display Co., LTD.

Inventor： Byung Ju LEE ,  Seung Geun LEE ,  Hoo Keun PARK ,  Won Sik OH ,  Seung A. LEE

IPC: H01L27/15 ,  H01L33/24 ,  H01L33/38 ,  H01L33/44

Abstract: A display device includes a first electrode and a second electrode spaced apart from each other and disposed on a substrate, a light emitting element extending in a first direction and including a first end disposed on the first electrode in the first direction and a second end disposed on the second electrode in the first direction. A diameter of the first end of the light emitting element is different from a diameter of the second end of the light emitting element. The light emitting element includes a first semiconductor layer, a second semiconductor layer spaced apart from the first semiconductor layer, and an active layer disposed between the first semiconductor layer and the second semiconductor layer. The active layer is adjacent to one of the first end and the second end of the light emitting element, which has a larger diameter than a diameter of the other.

公开(公告)号：US20230246127A1

公开(公告)日：2023-08-03

申请号：US17944511

申请日：2022-09-14

Applicant: Samsung Display Co., LTD.

Inventor： Hoo Keun PARK ,  Sang Jo KIM ,  Su Jeong KIM ,  Byung Ju LEE

IPC: H01L33/18 ,  H01L27/15 ,  H01L33/32 ,  H01L33/00

CPC classification number: H01L33/18 ,  H01L27/156 ,  H01L33/007 ,  H01L33/0093 ,  H01L33/325

Abstract: A display device includes first banks spaced apart from one another and disposed on a substrate, a first electrode and a second electrode disposed on the respective first banks to cover the respective first banks, the first electrode and the second electrode being spaced apart from each other, and a light-emitting element disposed between the first electrode and the second electrode. The light-emitting element includes an active layer, a first semiconductor layer, and a second semiconductor layer disposed between the active layer and the first electrode. The first semiconductor layer includes a main semiconductor layer and a nanoporous layer disposed in the main semiconductor layer.

公开(公告)号：US20230066350A1

公开(公告)日：2023-03-02

申请号：US17662205

申请日：2022-05-05

Applicant: Samsung Display Co., Ltd.

Inventor： Young Chul SIM ,  Jin Wan KIM ,  Dong Uk KIM ,  Dong Kyun SEO ,  Byung Ju LEE ,  Seung Geun LEE ,  Hyung Rae CHA

IPC: H01L33/30 ,  H01L33/18

Abstract: A light emitting element may include: a light emitting element core including a first semiconductor layer, a second semiconductor layer, and a light emitting layer between the first semiconductor layer and the second semiconductor layer; and a single crystal insulating layer around a side surface of the light emitting element core.

公开(公告)号：US20220085247A1

公开(公告)日：2022-03-17

申请号：US17423084

申请日：2019-07-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Young Rag DO ,  Byung Ju LEE

IPC: H01L33/38 ,  H01L33/20 ,  H01L27/15 ,  H01L33/62 ,  H01L33/00

Abstract: A light emitting device, a display device including a light emitting device, and a method of manufacturing a display device are provided. A light emitting device may include a substrate, and a plurality of light emitting element layers stacked on the substrate. Each of the light emitting element layers may include an insulating layer entirely disposed on the substrate, a first electrode and a second electrode disposed on the insulating layer and spaced apart from each other, and a plurality of light emitting elements disposed between the first electrode and the second electrode.

公开(公告)号：US20220069164A1

公开(公告)日：2022-03-03

申请号：US17327168

申请日：2021-05-21

Applicant: Samsung Display Co., LTD.

Inventor： Seung Geun LEE ,  Byung Ju LEE ,  Won Sik OH ,  Seung A LEE

IPC: H01L33/38 ,  H01L33/30 ,  H01L33/00 ,  H01L27/15

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 semiconductor layer disposed at the first end portion, an active layer disposed on the first semiconductor layer, a second semiconductor layer disposed on the active layer, a first barrier layer disposed between the active layer and the first semiconductor layer and including a first region and a second region, and an insulating film that surrounds an outer circumferential surface of each of the first semiconductor layer, the active layer, the first barrier layer, and the second semiconductor layer. The first region includes a semiconductor layer having an aluminum composition higher than an aluminum composition of the first semiconductor layer, the active layer, and the second semiconductor layer. The second region includes an oxide layer.

公开(公告)号：US20240063346A1

公开(公告)日：2024-02-22

申请号：US18207071

申请日：2023-06-07

Applicant: Samsung Display Co., LTD.

Inventor： Sang Jo KIM ,  Byung Ju LEE

IPC: H01L33/50 ,  H01L25/075 ,  H01L33/32 ,  H01L33/38

CPC classification number: H01L33/504 ,  H01L25/0753 ,  H01L33/325 ,  H01L33/382 ,  H01L2933/0041 ,  H01L2933/0016

Abstract: A display device comprises a substrate, and a first light emitting element, a second light emitting element, and a third light emitting element provided on the substrate and each including a first semiconductor layer, an active layer, and a second semiconductor layer. A third semiconductor layer is provided on the first light emitting element, a first color conversion layer is provided on the second light emitting element, and a second color conversion layer is provided on the third light emitting element, wherein the first color conversion layer and the second color conversion layer include the same semiconductor material as the third semiconductor layer, and further include dopants different from that of the second semiconductor layer.