公开(公告)号：US20250022994A1

公开(公告)日：2025-01-16

申请号：US18641969

申请日：2024-04-22

Applicant: Samsung Display Co., LTD.

Inventor： Myeong Su SO ,  Sang Wook HAN ,  Na Mi HONG

IPC: H01L33/60 ,  H01L25/16 ,  H01L33/62

Abstract: A display device includes an electrode disposed on a substrate, an organic pattern layer disposed on the substrate and spaced apart from the electrode, a light emitting element disposed on the organic pattern layer, the light emitting element including a contact electrode contacting the organic pattern layer, a first semiconductor layer, an active layer, and a second semiconductor layer sequentially disposed on the contact electrode and a connection electrode electrically connecting the electrode to the contact electrode, and the connection electrode is disposed along an upper surface of the electrode, a side surface of the organic pattern layer, and a side surface of the contact electrode.

公开(公告)号：US20210391308A1

公开(公告)日：2021-12-16

申请号：US17241943

申请日：2021-04-27

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 ,  H01L27/12 ,  H01L33/24 ,  H01L33/38 ,  H01L33/44 ,  H01L33/62 ,  B82B3/00 ,  C09D11/50 ,  C09D11/322 ,  C09D11/38 ,  C09D11/037

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：US20220165786A1

公开(公告)日：2022-05-26

申请号：US17454459

申请日：2021-11-10

Applicant: Samsung Display Co., Ltd.

Inventor： Se Hun KIM ,  Chang Hee LEE ,  Jae Kook HA ,  In Pyo KIM ,  Jun Bo SIM ,  Hyo Jin KO ,  Chan Woo JOO ,  Na Mi HONG

IPC: H01L27/15 ,  H01L33/00 ,  H01L33/24 ,  H01L33/38 ,  H01L33/44

Abstract: A method of manufacturing a light emitting element includes: forming a plurality of light emitting patterns on a stack substrate; forming a polysilazane layer on the plurality of light emitting patterns; forming a first insulating film by curing the polysilazane layer; and forming a second insulating film on the first insulating film. The forming of the first insulating film includes photocuring the polysilazane layer by irradiating ultraviolet rays onto the polysilazane layer. The forming of the plurality of light emitting patterns includes: forming a light emitting stack structure on the stack substrate; and etching the light emitting stack structure.

公开(公告)号：US20220093817A1

公开(公告)日：2022-03-24

申请号：US17476993

申请日：2021-09-16

Applicant: Samsung Display Co., LTD.

Inventor： Hyo Jin KO ,  Duk Ki KIM ,  Yong Hwi KIM ,  Jun Bo SIM ,  Na Mi HONG ,  Jong Hyuk KANG ,  Gyu Bong KIM ,  Hoi Lim KIM ,  Sae Na YUN ,  Chang Hee LEE ,  Hyun Deok IM ,  Eun A CHO ,  Jae Kook HA

IPC: H01L33/00 ,  H01L27/15 ,  H01L33/24 ,  H01L33/38 ,  H01L33/44 ,  B82B3/00 ,  C09D11/52 ,  C09D11/50 ,  C09D11/033

Abstract: An ink includes a solvent, and light-emitting elements dispersed in the solvent, each of the light-emitting elements comprising semiconductor layers and an insulating film partially surrounding outer surfaces of the semiconductor layers, wherein the solvent has Hansen solubility parameters of a polarity parameter between about 4 and about 9 and a hydrogen bonding parameter between about 6 and about 11.

公开(公告)号：US20230215983A1

公开(公告)日：2023-07-06

申请号：US18093959

申请日：2023-01-06

Applicant: Samsung Display Co., LTD.

Inventor： Mi Hyang SHEEN ,  Yun Hyuk KO ,  Dong Uk KIM ,  Na Ri AHN ,  Chang Hee LEE ,  Do Hyung KIM ,  Ran KIM ,  In Pyo KIM ,  Ki Young YEON ,  Je Won YOO ,  Joo Hee LEE ,  Sang Ho JEON ,  Jung Woon JUNG ,  Chan Woo JOO ,  Jin Young CHOI ,  Na Mi HONG ,  Jong Il KIM ,  Jin Ho BYUN ,  Sang Ho OH ,  Jae Kwang LEE ,  Yong Seok CHOI ,  Jong Hoon HA

IPC: H01L33/38 ,  H01L25/075 ,  H01L33/20 ,  H01L33/00 ,  H01L33/62

CPC classification number: H01L33/382 ,  H01L25/0753 ,  H01L33/20 ,  H01L33/005 ,  H01L33/62 ,  H01L2933/0016

Abstract: A method for fabricating a light emitting element includes preparing a substrate, and forming a first semiconductor material layer, a light emitting material layer, a second semiconductor material layer and an electrode material layer on the substrate, forming semiconductor rods spaced apart from each other by etching the first semiconductor material layer, the light emitting material layer, the second semiconductor material layer and the electrode material layer in a direction perpendicular to an upper surface of the substrate, forming an insulating layer surrounding sides of the semiconductor rods through a sol-gel process by immersing the substrate, including the semiconductor rods, in a solution containing a precursor material, and forming light emitting elements by separating the semiconductor rods, including the insulating layer, from the substrate, and the light emitting elements have an external quantum efficiency of 20.2±0.6%.

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.