公开(公告)号：US20240324272A1

公开(公告)日：2024-09-26

申请号：US18437551

申请日：2024-02-09

Applicant: Samsung Display Co., LTD.

Inventor： Yun Ku JUNG ,  Yunhyuk KO ,  Sehun KIM ,  Jonghoon KIM ,  Seung Uk NOH ,  Won-Jun PARK ,  Chul Soon PARK ,  Jongwoo SHIN ,  Sooho LEE ,  Jae Kook HA

IPC: H10K50/16 ,  H10K102/00

CPC classification number: H10K50/166 ,  H10K2102/351

Abstract: A light emitting device includes: a first electrode that is a reflective electrode; a first electron transport layer disposed on the first electrode; a second electron transport layer disposed on the first electron transport layer; an emission layer disposed on the second electron transport layer, and a second electrode positioned on the emission layer and that is a transflective electrode, wherein the first electron transport layer and the second electron transport layer include different metal oxides, and a thickness of the first electron transport layer is greater than a thickness of the second electron transport layer.

公开(公告)号：US20210226165A1

公开(公告)日：2021-07-22

申请号：US17031778

申请日：2020-09-24

Applicant: Samsung Display Co., Ltd.

Inventor： Yun Hyuk KO ,  Chang Hee LEE ,  Jin Oh KWAG ,  Keun Kyu SONG ,  Yun Ku JUNG ,  Sung-Chan JO ,  Jae Kook HA

IPC: H01L51/52 ,  H01L27/32

Abstract: A light emitting element and a display device including the same are provided. The light emitting element includes a first semiconductor layer, a second semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, a protective layer surrounding an outer surface of at least one of the first semiconductor layer, the second semiconductor layer, and the active layer, and an insulating layer surrounding an outer surface of the protective layer. A surface of at least one of the first semiconductor layer, the second semiconductor layer, and the active layer includes a first lattice point, wherein the protective layer includes a first atom and a second atom, and wherein the first atom of the protective layer is at the first lattice point.

公开(公告)号：US20220199863A1

公开(公告)日：2022-06-23

申请号：US17513302

申请日：2021-10-28

Applicant: Samsung Display Co., LTD.

Inventor： Se Hun KIM ,  Chang Hee LEE ,  Yun Hyuk KO ,  Jun Bo SIM ,  Jae Kook HA ,  Dong Uk KIM ,  In Pyo KIM ,  Je Won YOO ,  Hyun Min CHO ,  Chan Woo JOO ,  Na Mi HONG

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

Abstract: A method for manufacturing a light emitting element includes forming a first semiconductor layer on a substrate, the first semiconductor layer including a semiconductor of a first type; forming an active layer on the first semiconductor layer; forming a second semiconductor layer on the active layer, the second semiconductor layer including a semiconductor of a second type different from the first type; performing an etching process of removing at least a portion of each of the first semiconductor layer, the active layer, and the second semiconductor layer in a direction toward the first semiconductor layer from the second semiconductor layer; and forming a first insulating layer to surround an outer surface of the active layer. The first insulating layer is formed by a wet process.

公开(公告)号：US20220037559A1

公开(公告)日：2022-02-03

申请号：US17319602

申请日：2021-05-13

Applicant: Samsung Display Co., LTD.

Inventor： Hyo Jin KO ,  Duk Ki KIM ,  Jun Bo SIM ,  Na Mi HONG ,  Yong Hwi KIM ,  Chang Hee LEE ,  Jae Kook HA

IPC: H01L33/26 ,  G02F1/167 ,  C09D11/50 ,  C09D11/38 ,  C09K11/02 ,  H01L33/42 ,  H01L33/50

Abstract: A light emitting element ink comprises a light emitting element solvent, a light emitting element dispersed in the light emitting element solvent, the light emitting element including a plurality of semiconductor layers, and an insulating film surrounding outer surfaces of the plurality of semiconductor layers, and a thickener dispersed in the light emitting element solvent, wherein the thickener includes a compound represented by Chemical Structural Formula 1 as a polyol-based compound capable of forming a hydrogen bond with the light emitting element solvent or another thickener, and the thickener has a boiling point in a range of about 200° C. to about 450° C.

公开(公告)号：US20240178201A1

公开(公告)日：2024-05-30

申请号：US18433201

申请日：2024-02-05

Applicant: Samsung Display Co., LTD.

Inventor： Jun Bo SIM ,  Duk Ki KIM ,  Yong Hwi KIM ,  Hyo Jin KO ,  Chang Hee LEE ,  Chan Woo JOO ,  Jae Kook HA ,  Na Mi HONG

IPC: H01L25/075 ,  B82B3/00 ,  C09D11/322 ,  C09D11/38 ,  C09D11/50 ,  H01L27/12 ,  H01L33/24 ,  H01L33/38 ,  H01L33/44 ,  H01L33/62

CPC classification number: H01L25/0753 ,  B82B3/0052 ,  C09D11/322 ,  C09D11/38 ,  C09D11/50 ,  H01L27/1214 ,  H01L33/24 ,  H01L33/38 ,  H01L33/44 ,  H01L33/62 ,  H01L2933/0066

Abstract: A light-emitting element ink, a display device, and a method of fabricating the display device are provided. The light-emitting element ink includes a light-emitting element solvent, light-emitting elements dispersed in the light-emitting element solvent, each of the light-emitting elements including a plurality of semiconductor layers and an insulating film that surrounds parts of outer surfaces of the semiconductor layers, and a surfactant dispersed in the light-emitting element solvent, the surfactant including a fluorine-based and/or a silicon-based surfactant.

公开(公告)号：US20220139871A1

公开(公告)日：2022-05-05

申请号：US17451284

申请日：2021-10-18

Applicant: Samsung Display Co., Ltd.

Inventor： Na Mi HONG ,  Hyo Jin KO ,  Duk Ki KIM ,  Jun Bo SIM ,  Chang Hee LEE ,  Jae Kook HA ,  Gyu Bong KIM ,  Hoi Lim KIM

IPC: H01L23/00 ,  H01L25/16 ,  C09D11/033 ,  C09K11/62

Abstract: A light-emitting element ink and a method of manufacturing a display device using the light-emitting element ink are provided. The light-emitting element ink comprises a solvent, a dispersant mixed with the solvent, and a plurality of light-emitting elements dispersed in the solvent, each of the light-emitting elements including a plurality of semiconductor layers and an insulating film surrounding parts of outer surfaces of the semiconductor layers, wherein the dispersant includes an aqueous dispersant or an organic dispersant, if the dispersant is the aqueous dispersant, the solvent has a hydrogen bonding parameter, of Hansen's solubility parameters, of less than 7, and if the dispersant is the organic dispersant, the solvent has a hydrogen bonding parameter, of Hansen's solubility parameters, of 7 or greater.

公开(公告)号：US20220093818A1

公开(公告)日：2022-03-24

申请号：US17360596

申请日：2021-06-28

Applicant: Samsung Display Co., LTD.

Inventor： Jun Bo SIM ,  Duk Ki KIM ,  Hyo Jin KO ,  Chang Hee LEE ,  Jae Kook HA ,  Na Mi HONG ,  Jong Hyuk KANG ,  Won Ho LEE ,  Hyun Deok IM ,  Eun A CHO

IPC: H01L33/00 ,  H01L27/15 ,  H01L33/32 ,  H01L33/24 ,  H01L33/06 ,  C09D11/50 ,  C09D11/52 ,  C09D11/037 ,  C09D11/033

Abstract: An ink for manufacturing a display device includes a solvent; and light emitting elements disposed in the solvent, wherein the light emitting elements include a first semiconductor layer including a first type of semiconductor and a second semiconductor layer including a second type of semiconductor, and an electrical conductivity of the ink is about 1.5 μS/m or less. Also provided are a method of manufacturing a display device using the ink and a display device manufactured by the method.

公开(公告)号：US20210332256A1

公开(公告)日：2021-10-28

申请号：US17233288

申请日：2021-04-16

Applicant: Samsung Display Co., Ltd.

Inventor： Jun Bo SIM ,  Hyo Jin KO ,  Duk Ki KIM ,  Chang Hee LEE ,  Jae Kook HA

IPC: C09D11/38 ,  H01L51/52 ,  H01L51/56 ,  C09D11/50

Abstract: A light emitting element ink and a method of manufacturing a display device are provided. The light emitting element ink includes a light emitting element solvent, a light emitting element dispersed in the light emitting element solvent, the light emitting element including a plurality of semiconductor layers and an insulating film surrounding outer surfaces of the semiconductor layers, a thickener dispersed in the light emitting element solvent, wherein a compound of the thickener includes a functional group capable of forming a hydrogen bond together with a compound of the light emitting element solvent or another compound of the thickener and the compound of the thickener is represented by Chemical Formula 1.

公开(公告)号：US20210280813A1

公开(公告)日：2021-09-09

申请号：US17034820

申请日：2020-09-28

Applicant: Samsung Display Co., LTD.

Inventor： Seung Mook LEE ,  Chang Hee LEE ,  Yool Guk KIM ,  Young Mo KOO ,  Jae Kook HA

IPC: H01L51/50 ,  H01L27/32 ,  H01L51/00 ,  H01L51/56 ,  C09D11/38

Abstract: A display device includes a substrate on which pixels are defined, a pixel electrode disposed for each of the pixels on the substrate, a pixel defining layer disposed along a boundary of the pixels, the pixel defining layer including an opening exposing the pixel electrode, a light emitting layer disposed on the pixel electrode in the opening of the pixel defining layer, and a hole injection layer disposed between the pixel electrode and the light emitting layer. The hole injection layer includes an adhesion promoting layer disposed on the pixel electrode.

公开(公告)号：US20240266475A1

公开(公告)日：2024-08-08

申请号：US18636248

申请日：2024-04-15

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jun Bo SIM ,  Chang Hee LEE ,  Yun Hyuk KO ,  Sang Ho JEON ,  Jae Kook HA

IPC: H01L33/44 ,  H01L25/075 ,  H01L25/16 ,  H01L33/00 ,  H01L33/62

CPC classification number: H01L33/44 ,  H01L25/0753 ,  H01L25/167 ,  H01L33/007 ,  H01L33/0075 ,  H01L33/0093 ,  H01L33/62 ,  H01L2933/0025

Abstract: A light emitting element includes: a light emitting stack pattern including a first semiconductor layer, an active layer, and a second semiconductor layer that are sequentially stacked along one direction; and an insulating film surrounding an outer surface of at least one of the first semiconductor layer, the active layer, and the second semiconductor layer. The insulating film including a zinc oxide (ZnO) thin film layer.