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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%.
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2.发明申请公开(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
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.
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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
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.
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4.发明公开公开(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.
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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.
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Patent Agency Ranking
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.
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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
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.
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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
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.
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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.
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公开(公告)号：US20230255048A1
公开(公告)日：2023-08-10
申请号：US18303948
申请日：2023-04-20
Applicant: Samsung Display Co., LTD.
Inventor： Seung Mook LEE , Chang Hee LEE , Yool Guk KIM , Young Mo KOO , Jae Kook HA
IPC: H10K50/17 , C09D11/38 , H10K59/122 , H10K71/00 , H10K71/13
CPC classification number: H10K50/17 , C09D11/38 , H10K59/122 , H10K71/00 , H10K71/135 , H10K59/1201
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.
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