公开(公告)号：US20220204796A1

公开(公告)日：2022-06-30

申请号：US17593438

申请日：2020-03-03

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Hoon JUNG ,  Hee Yeon YOO ,  Hye Jung HONG ,  Hyo Jin KO ,  Duk Ki KIM ,  Jun Bo SIM ,  Sung Chan JO ,  Jong Hyuk KANG ,  Keun Kyu SONG ,  Hyun Min CHO

IPC: C09D11/50 ,  H01L33/00 ,  H01L25/075

Abstract: A method for manufacturing a display device comprises the steps of: spraying, on a target substrate having a first electrode and a second electrode formed thereon, an element ink comprising a first element solvent and light-emitting elements dispersed in the first element solvent; forming a second element solvent in which at least some bonds of the first element solvent are decomposed by irradiating light to the first element solvent and mounting the light-emitting elements on the first electrode and the second electrode; and removing the second element solvent.

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：US20240234640A1

公开(公告)日：2024-07-11

申请号：US18606347

申请日：2024-03-15

Applicant: Samsung Display Co., LTD.

Inventor： Se Hun KIM ,  Chang Hee LEE ,  Yun Hyuk KO ,  Duk Ki KIM ,  Jun Woo PARK ,  Soo Ho LEE ,  Jae Kook HA ,  Yun Ku JUNG

IPC: H01L33/44 ,  H01L25/16 ,  H01L33/00 ,  H01L33/20

CPC classification number: H01L33/44 ,  H01L25/167 ,  H01L33/0095 ,  H01L33/007 ,  H01L33/0093 ,  H01L33/20 ,  H01L2933/0025

Abstract: A light-emitting element includes a first semiconductor layer doped to have a first polarity, a second semiconductor layer doped to have a second polarity different from the first polarity, a light-emitting layer disposed between the first and second semiconductor layers, a shell layer formed on side surfaces of the first semiconductor layer, the light-emitting layer, and the second semiconductor layer, the shell layer including a divalent metal element, and an insulating film covering an outer surface of the shell layer and surrounding the side surface of the light-emitting layer.

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：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：US20230416548A1

公开(公告)日：2023-12-28

申请号：US18465881

申请日：2023-09-12

Applicant: Samsung Display Co., LTD.

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

IPC: C09D11/38 ,  C09D11/50 ,  H10K50/844 ,  H10K71/00

CPC classification number: C09D11/38 ,  C09D11/50 ,  H10K50/844 ,  H10K71/00 ,  C09K11/06

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：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.