公开(公告)号：US20210272936A1

公开(公告)日：2021-09-02

申请号：US17254656

申请日：2018-07-05

Applicant: LG ELECTRONICS INC.

Inventor： Junghoon KIM ,  Dohee KIM

IPC: H01L25/075 ,  H01L21/683 ,  H01L33/00 ,  H01L33/62

Abstract: Discussed are a display device, and a method of manufacturing the display device. The display device includes a substrate having a plurality of metal pads, and a semiconductor light-emitting element electrically connected to the plurality of metal pads through self-assembly. Specifically, each metal pad includes a bonding metal electrically connected to a conductive electrode of a respective semiconductor light-emitting element, and a coating layer encompassing the bonding metal.

公开(公告)号：US20210066388A1

公开(公告)日：2021-03-04

申请号：US16964838

申请日：2018-01-26

Applicant: LG ELECTRONICS INC.

Inventor： Junghoon KIM

IPC: H01L27/15 ,  H01L33/62 ,  H01L33/38

Abstract: Discussed is a display apparatus including a substrate having a wiring electrode; and a semiconductor light-emitting device that emits light to an upper surface thereof, has a conductive electrode electrically connected to the wiring electrode on a lower surface thereof, and has at least a side surface of which is covered by a passivation layer, wherein the conductive electrode comprises: an insulating region further covered by the passivation layer, and a concave-convex region exposed by the passivation layer and electrically connected to the wiring electrode, a surface of the concave-convex portion being formed with concavity and convexity.

公开(公告)号：US20230420618A1

公开(公告)日：2023-12-28

申请号：US18265172

申请日：2020-12-04

Applicant: LG ELECTRONICS INC.

Inventor： Myoungsoo KIM ,  Minwoo LEE ,  Jungsub KIM ,  Junghoon KIM

IPC: H01L33/48 ,  H01L25/16 ,  H01L27/12

CPC classification number: H01L33/483 ,  H01L25/167 ,  H01L27/124

Abstract: The display device includes a substrate, a first wiring line on the substrate, a second wiring line on the substrate, and a first insulating member on the first wiring line and the second wiring line, a blocking member disposed across the first wiring line and the second wiring line, a second insulating member including a plurality of assembly holes, and a plurality of light emitting devices disposed in each of the plurality of assembly holes.
Each of the plurality of assembly holes includes a first region closer to the blocking member and a second region farther than the first region from the blocking member. A part of the blocking member is disposed in the first area of the assembly hole.

公开(公告)号：US20230081184A1

公开(公告)日：2023-03-16

申请号：US17759631

申请日：2020-02-04

Applicant: LG ELECTRONICS INC.

Inventor： Byungjun KANG ,  Junghoon KIM

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

Abstract: According to the present invention, in a display device comprising a substrate and semiconductor light emitting devices mounted on the substrate, the semiconductor light emitting devices are characterized in that the semiconductor light emitting devices include a protective layer and a pattern layer having one surface in contact with the protective layer, another surface in contact with the substrate, and a concave-convex structure on another surface, through such a structure, it is possible to minimize the phenomenon that the semiconductor light emitting device is adsorbed to the surface of the substrate other than the cell.

公开(公告)号：US20230047241A1

公开(公告)日：2023-02-16

申请号：US17794381

申请日：2020-01-29

Applicant: LG ELECTRONICS INC.

Inventor： Sunghyun HWANG ,  Junghoon KIM

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

Abstract: A display device, according to an embodiment of the present invention, comprises a semiconductor light-emitting element, the semiconductor light-emitting element comprising: a first conductive electrode; an undoped semiconductor layer formed on the first conductive electrode; a first conductive semiconductor layer formed on the undoped semiconductor layer; an active layer formed on the first conductive semiconductor layer; a second conductive semiconductor layer formed on the active layer; and a second conductive electrode formed on the second conductive semiconductor layer; wherein the first conductive electrode is formed to cover a part of a side surface of the first conductive semiconductor layer.

公开(公告)号：US20220416128A1

公开(公告)日：2022-12-29

申请号：US17780779

申请日：2020-02-11

Applicant: LG ELECTRONICS INC.

Inventor： Byungjun KANG ,  Junghoon KIM

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

Abstract: The present invention relates to a method for manufacturing a display device, and more particularly, to a method for manufacturing a display device using a semiconductor light emitting device having a size of several μm to several tens of μm, and to an assembly substrate used for manufacturing the display device. The present invention provides a display device, characterized in that including a substrate having a wiring electrode, a plurality of semiconductor light emitting devices electrically connected to the wiring electrode, and a passivation layer formed to cover the semiconductor light emitting device, and the passivation layer is formed to cover only a portion of a side surface of the semiconductor light emitting device.

公开(公告)号：US20220393074A1

公开(公告)日：2022-12-08

申请号：US17775746

申请日：2019-11-15

Applicant: LG ELECTRONICS INC.

Inventor： Mihee HEO ,  Junghoon KIM

IPC: H01L33/44 ,  H01L25/075 ,  H01L23/00 ,  H01L21/683

Abstract: A method of manufacturing a display device according to the present invention involves assembling a semiconductor light emitting element to an assembly substrate and then transferring the same to a wiring substrate, wherein, during self-assembly using magnetic and electric fields, the semiconductor light emitting element is fixed to the assembly substrate by forming a covalent bond between the semiconductor light emitting element and the assembly substrate so that the semiconductor light emitting element does not become separated from the assembly substrate, and when transferring the assembled object to the wiring substrate, the formed covalent bond is broken down so that the semiconductor light emitting element can be easily detached from the assembly substrate.

公开(公告)号：US20190326477A1

公开(公告)日：2019-10-24

申请号：US16415583

申请日：2019-05-17

Applicant: LG ELECTRONICS INC.

Inventor： Junghoon KIM ,  Changseo PARK ,  Bongchu SHIM ,  Byoungkwon CHO ,  Hyunwoo CHO

IPC: H01L33/38 ,  H01L33/20 ,  H01L33/40 ,  H01L33/62 ,  H01L33/44 ,  H01L25/075 ,  H01L33/00

Abstract: The present disclosure relates a display device including a semiconductor light emitting device, and a substrate having a receiving groove in which the semiconductor light emitting device is accommodated, wherein the semiconductor light emitting device includes a first conductive semiconductor layer, a second conductive semiconductor layer disposed at an upper portion of the first conductive semiconductor layer, a first conductive electrode disposed on the first conductive semiconductor layer, and a second conductive electrode disposed on the second conductive semiconductor layer, and spaced apart from the first conductive electrode along a horizontal direction, wherein when the semiconductor light emitting device is assembled into the receiving groove, the first conductive semiconductor layer has an asymmetrical shape with respect to at least one direction so that the first conductive electrode and the second conductive electrode are arranged at preset positions.

公开(公告)号：US20230415483A1

公开(公告)日：2023-12-28

申请号：US18034782

申请日：2020-11-06

Applicant: LG ELECTRONICS INC.

Inventor： Wonjae CHANG ,  Jinsung KIM ,  Byungjun KANG ,  Myoungsoo KIM ,  Junghoon KIM

IPC: B41J2/145 ,  B41J2/10 ,  B41J2/045

CPC classification number: B41J2/145 ,  B41J2/10 ,  B41J2/04573

Abstract: An inkjet head device comprises a body comprising light emitting devices, a nozzle installed on a lower side of the body to spray the light emitting devices onto the substrate in units of droplets, and a first guide part disposed in the body to guide the light emitting devices to the nozzle in a line. Since the light emitting devices arranged in a line by the first guide part are dropped on the substrate in units of a predetermined amount of droplets, the number of light emitting devices included in each droplet may be the same or similar. Thus, since the same or similar number of light-emitting elements are disposed or aligned in each sub-pixel, the luminance in each sub-pixel obtained by the light-emitting elements can be uniform.

公开(公告)号：US20230378141A1

公开(公告)日：2023-11-23

申请号：US18030394

申请日：2020-10-13

Applicant: LG ELECTRONICS INC.

Inventor： Myoungsoo KIM ,  Jinsung KIM ,  Wonjae CHANG ,  Byungjun KANG ,  Junghoon KIM

IPC: H01L25/075 ,  H01L33/62

CPC classification number: H01L25/0753 ,  H01L33/62

Abstract: A display device comprises a substrate comprises a substrate comprising a plurality of sub pixels, a first electrode in the plurality of sub pixels, a second electrode in the plurality of sub pixels, and adjacent to the first electrode, a first magnetic layer between the first electrode and the second electrode, and a plurality of light emitting elements between the first electrode and the second electrode. The light emitting element comprises at least one second magnetic layer in contact with the magnetic layer.