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：US20230369542A1

公开(公告)日：2023-11-16

申请号：US18024544

申请日：2020-12-16

Applicant: Samsung Display Co., LTD.

Inventor： Hyun Min CHO ,  Dong Uk KIM ,  Se Young KIM ,  Seung Geun LEE ,  Seung A LEE ,  Yo Han LEE ,  Sung Ae JANG ,  Hyung Rae CHA ,  Ji Hyun HAM

IPC: H01L33/44 ,  H01L25/16 ,  H01L33/00

CPC classification number: H01L33/44 ,  H01L25/167 ,  H01L33/0093 ,  H01L2933/0025

Abstract: A light-emitting device includes a light-emitting device core including a first semiconductor layer, a second semiconductor layer disposed on the first semiconductor layer, and an element active layer disposed between the first semiconductor layer and the second semiconductor layer; a first insulating layer disposed on the side surface of the light-emitting device core to surround the side surface of the light-emitting device core, and having first fixed charges; and a second insulating layer surrounding the outer side surface of the first insulating layer, and including a material having second fixed charges different from the first fixed charges.

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：US20230061476A1

公开(公告)日：2023-03-02

申请号：US17829916

申请日：2022-06-01

Applicant: Samsung Display Co., LTD.

Inventor： Su Jeong KIM ,  Jin Wan KIM ,  Seung Geun LEE ,  Sang Jo KIM

IPC: H01L33/38 ,  H01L33/62 ,  H01L33/32 ,  H01L33/00

Abstract: A display device includes a first electrode and a second electrode that are disposed on a substrate, a light emitting element disposed on the first electrode and the second electrode, a first contact electrode electrically connecting the first electrode and the light emitting element to each other, and a second contact electrode electrically connecting the second electrode and the light emitting element to each other. The light emitting element includes a first semiconductor layer including a semiconductor of a first type, a second semiconductor layer including a semiconductor of a second type, and an active layer disposed between the first semiconductor layer and the second semiconductor layer. The first semiconductor layer includes a doped semiconductor layer including a porous structure.

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：US20230352640A1

公开(公告)日：2023-11-02

申请号：US18022402

申请日：2021-08-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Chul Jong YOO ,  Dong Eon LEE ,  Myeong Hee KIM ,  Hoo Keun PARK ,  Byung Ju LEE ,  So Young LEE ,  Seung Geun LEE ,  Seung A LEE ,  Jong Won LEE ,  Ji Hyun HAM

IPC: H01L33/60 ,  H01L25/16

CPC classification number: H01L33/60 ,  H01L25/167

Abstract: A includes a substrate including a plurality of pixels, a plurality of transistors disposed on the substrate, a passivation layer overlapping the plurality of transistors, a first electrode and a second electrode disposed on the passivation layer and spaced apart from each other, an insulating layer disposed on the first electrode and the second electrode, a plurality of light emitting elements disposed between the first electrode and the second electrode on the insulating layer and electrically connected to the first electrode and the second electrode, and an insulating reflective layer disposed between the passivation layer and the plurality of light emitting elements.

公开(公告)号：US20230178687A1

公开(公告)日：2023-06-08

申请号：US17881459

申请日：2022-08-04

Applicant: Samsung Display Co., LTD.

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

IPC: H01L33/32 ,  H01L27/15 ,  H01L33/14 ,  H01L33/06 ,  H01L33/38

CPC classification number: H01L33/32 ,  H01L27/156 ,  H01L33/145 ,  H01L33/06 ,  H01L33/382

Abstract: A display device comprises a plurality of pixel electrodes which are provided on a substrate, and a plurality of light emitting elements which are provided on the plurality of pixel electrodes, wherein each of the plurality of light emitting elements comprises a first semiconductor layer, a second semiconductor layer and an active layer provided between the first semiconductor layer and the second semiconductor layer, and one or more of the plurality of light emitting elements comprise a capping layer included in the active layer, and another one of the plurality of light emitting elements does not comprise the capping layer in the active layer, wherein the capping layer comprises AlGaN.

公开(公告)号：US20230112256A1

公开(公告)日：2023-04-13

申请号：US17752620

申请日：2022-05-24

Applicant: Samsung Display Co., LTD.

Inventor： Seung Geun LEE ,  Jin Wan KIM ,  Sang Jo KIM ,  Su Jeong KIM

IPC: H01L25/18 ,  H01L27/15 ,  G09G3/32 ,  G09G3/20

Abstract: A display device comprises a substrate, a pixel electrode on the substrate, a light emitting element on the pixel electrode, and a common electrode layer on the light emitting element, and configured to receive a common voltage, wherein the light emitting element configured to emit a first light according to a driving current having a first current density, is configured to emit a second light according to a driving current having a second current density, and is configured to emit a third light according to a driving current having a third current density.

公开(公告)号：US20230111670A1

公开(公告)日：2023-04-13

申请号：US17855251

申请日：2022-06-30

Applicant: Samsung Display Co., LTD.

Inventor： Jin Wan KIM ,  Seung Geun LEE ,  Sang Jo KIM ,  Su Jeong KIM ,  Young Jin SONG ,  Byung Ju LEE

IPC: G09G3/32 ,  H01L27/15 ,  H01L25/18 ,  G09G3/20

Abstract: A display device includes a substrate, a plurality of pixel electrodes on the substrate and spaced apart from each other, a plurality of light-emitting elements on the plurality of pixel electrodes, respectively, and a common electrode layer on the plurality of light-emitting elements and to which a common voltage is applied. The plurality of light-emitting elements include a first light-emitting element that is configured to emit first light according to a first driving current and a second light-emitting element that is configured to emit second light according to a second driving current. An active layer of the first light-emitting element is the same as an active layer of the second light-emitting element.