公开(公告)号：US20230402489A1

公开(公告)日：2023-12-14

申请号：US18037657

申请日：2020-11-25

Applicant: LG ELECTRONICS INC.

Inventor： Sunghyun HWANG ,  Mihee HEO ,  Kiseong JEON

IPC: H01L27/15 ,  H01L33/00 ,  H01L33/36

CPC classification number: H01L27/15 ,  H01L33/0062 ,  H01L33/36 ,  H01L2933/0033

Abstract: The light emitting device includes an active layer, a plurality of first conductivity-type semiconductor layers under the active layer, and a plurality of second conductivity-type semiconductor layers on the active layer. The plurality of first conductivity-type semiconductor layers include an adsorption prevention layer spaced farthest from the active layer.
The adsorption prevention layer can include Alx1Ga(1-x1)InP, x1 can be 0.6 or less, and the thickness of the adsorption prevention layer can be 2 μm or less.

公开(公告)号：US20230197892A1

公开(公告)日：2023-06-22

申请号：US18106671

申请日：2023-02-07

Applicant: LG ELECTRONICS INC.

Inventor： Changseo PARK ,  Kiseong JEON ,  Jinhong PARK ,  Hwankuk YUH

IPC: H01L33/08 ,  H01L25/075 ,  H05B33/10 ,  H05B33/14 ,  H05B33/22 ,  H01L33/38 ,  H05K1/11

CPC classification number: H01L33/08 ,  H01L25/0753 ,  H01L33/382 ,  H05B33/10 ,  H05B33/14 ,  H05B33/22 ,  H05K1/111 ,  H01L33/62

Abstract: A display device, including a substrate having a plurality of metal pads; and a plurality of semiconductor light emitting devices electrically connected to the metal pads. A respective semiconductor light emitting device includes an n-type semiconductor layer, an active layer and a p-type semiconductor layer, a conductive electrode on the p-type semiconductor layer; and a passivation layer configured to surround the respective semiconductor light emitting device and including a through hole through which the conductive electrode is exposed. Further, the conductive electrode includes a protruding portion protruding through the through hole of the passivation layer and overlapping outer surfaces of the passivation layer. Also, the protruding portion of the conductive electrode contacts a corresponding metal pad, and a width of the protruding portion of the conductive electrode is greater than a width of the corresponding metal pad.

公开(公告)号：US20230084381A1

公开(公告)日：2023-03-16

申请号：US17798211

申请日：2020-02-17

Applicant: LG ELECTRONICS INC.

Inventor： Soohyun KIM ,  Kiseong JEON ,  Jaewon CHANG ,  Hyunho LEE

IPC: H01L25/075 ,  H01L33/62

Abstract: The present invention relates to a display device, and more particularly, to a display device using semiconductor light-emitting devices of several micrometers to tens of micrometers in size. The present invention provides a display device comprising: a base part; a plurality of assembly electrodes which is arranged on the base part and which generates an electric field when power is applied thereto; a dielectric layer formed to cover the assembly electrodes; and a plurality of semiconductor light-emitting devices arranged on the dielectric layer; wherein each of the semiconductor light-emitting devices comprises: a first assembly control layer formed at a portion of the whole area of one surface facing the dielectric layer; and a second assembly control layer formed at the other portion of the whole area of the one surface facing the dielectric layer, and made of a material different from that of the first assembly control layer.

公开(公告)号：US20240213426A1

公开(公告)日：2024-06-27

申请号：US18383763

申请日：2023-10-25

Applicant: LG ELECTRONICS INC.

Inventor： Byungjun KANG ,  Kiseong JEON ,  Sunghyun HWANG ,  Junho SUNG ,  Mihee HEO ,  Minwoo LEE ,  Hyungjo PARK

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

CPC classification number: H01L33/62 ,  H01L25/0753 ,  H01L33/38

Abstract: Discussed is a semiconductor light emitting device can include a light emitting layer, a passivation layer on an upper surface and a side surface of the light emitting layer, a protective layer on a lower surface and the side surface of the light emitting layer, a first electrode between the light emitting layer and the protective layer, and a second electrode between the light emitting layer and the passivation layer. An inner angle between the side surface and the lower surface of the light emitting layer can have an obtuse angle.

公开(公告)号：US20230395762A1

公开(公告)日：2023-12-07

申请号：US18035710

申请日：2020-11-06

Applicant: LG ELECTRONICS INC.

Inventor： Sunghyun HWANG ,  Mihee HEO ,  Kiseong JEON

IPC: H01L33/58 ,  H01L25/075 ,  H01L23/00 ,  H01L33/40

CPC classification number: H01L33/58 ,  H01L25/0753 ,  H01L24/96 ,  H01L33/40 ,  H01L2224/95085 ,  H01L2224/95144

Abstract: A light emitting device includes a first conductivity-type semiconductor layer, an active layer on the first conductivity-type semiconductor layer, a second conductivity-type semiconductor layer on the active layer, a first electrode on the first conductivity-type semiconductor layer, a second electrode on the second conductivity-type semiconductor layer, and a diffusion layer between the first electrode and the first conductivity-type semiconductor layer. The first electrode includes a plurality of layers, and at least one layer of the plurality of layers includes a magnetic material. The diffusion layer includes a magnetic material, and a thickness of the diffusion layer is 100 nm or less.

公开(公告)号：US20220230999A1

公开(公告)日：2022-07-21

申请号：US17715699

申请日：2022-04-07

Applicant: LG ELECTRONICS INC.

Inventor： Kiseong JEON

IPC: H01L25/075 ,  H01L33/50 ,  H01L33/62

Abstract: Discussed is a display device, including a substrate, a substrate electrode disposed on the substrate, a magnetic portion disposed and having a magnetic property on an upper surface of the substrate, and a plurality of light-emitting devices respectively disposed on the magnetic portion, wherein the each of the plurality of light-emitting devices includes a magnetic electrode forming an attractive force with the magnetic portion.

公开(公告)号：US20220115361A1

公开(公告)日：2022-04-14

申请号：US17558309

申请日：2021-12-21

Applicant: LG ELECTRONICS INC.

Inventor： Juchan CHOI ,  Changseo PARK ,  Bongchu SHIM ,  Kiseong JEON

IPC: H01L25/075 ,  H01L25/16

Abstract: Discussed is a display device, including a substrate having an assembly region and a non-assembly region, semiconductor light emitting devices arranged on the substrate, a first wiring electrode and a second wiring electrode extended from each of the semiconductor light emitting devices, respectively, to supply an electric signal to the semiconductor light emitting devices, pair electrodes arranged on the substrate to generate an electric field when an electric current is supplied, and provided with first and second pair electrodes disposed on an opposite side to the first and second wiring electrodes with respect to the semiconductor light emitting devices, a dielectric layer disposed on the pair electrodes, and bus electrodes electrically connected to the pair electrodes, wherein the pair electrodes are arranged in parallel to each other along a direction in the assembly region, and wherein the bus electrodes are disposed in the non-assembly region.

公开(公告)号：US20200235077A1

公开(公告)日：2020-07-23

申请号：US16482971

申请日：2017-04-25

Applicant: LG ELECTRONICS INC.

Inventor： Kiseong JEON ,  Jinhong PARK ,  Changseo PARK ,  Hwankuk YUH

IPC: H01L25/075 ,  H01L33/62 ,  H01L33/20 ,  H01L33/38 ,  H01L33/44 ,  H01L21/66

Abstract: The present invention relates to a display device and, more particularly, to a display device using a semiconductor light emitting element. The display device according to the present invention comprises: a substrate including a plurality of metal pads; and a green semiconductor light emitting element and a blue semiconductor light emitting element, which are electrically connected to the metal pads through self-assembly, wherein the green semiconductor light emitting element and the blue semiconductor light emitting element include identification to parts having different shapes so as to be distinguishable from each other when connected to the substrate.

公开(公告)号：US20230223383A1

公开(公告)日：2023-07-13

申请号：US17928240

申请日：2020-06-01

Applicant: LG ELECTRONICS INC.

Inventor： Jisoo KO ,  Kiseong JEON ,  Gunho KIM ,  Hyeyoung YANG

IPC: H01L25/075 ,  H01L33/00

CPC classification number: H01L25/0753 ,  H01L33/0093

Abstract: A display device manufacturing substrate according to the present disclosure comprises: a base part; assembly electrodes which extend in one direction and which are arranged on the base part; a dielectric layer formed on the base part to cover the assembly electrodes; a partitioning part formed on the dielectric layer; and cells which are formed in a plurality of rows and columns by means of the partitioning part, and on which semiconductor light-emitting elements are loaded, wherein the assembly electrodes extend in either the row direction or the column direction to overlap cells in the extending direction, and the assembly electrodes comprise a first assembly electrode overlapping cells that form one row or column, and a second assembly electrode simultaneously overlapping cells that form different rows or columns which are adjacent.

公开(公告)号：US20230048122A1

公开(公告)日：2023-02-16

申请号：US17789049

申请日：2020-01-03

Applicant: LG ELECTRONICS INC.

Inventor： Jemin YU ,  Sungyun PARK ,  Hyunho LEE ,  Kiseong JEON ,  Soohyun KIM ,  Inbum YANG

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

Abstract: Discussed is an apparatus and a method of manufacturing a display using a micro light emitting diode (LED). A method of manufacturing a display device using a light emitting element includes providing a substrate having an individual pixel position defined by a pair of assembly electrodes; moving the light emitting element including a magnetic body on to the substrate using a magnetic chuck having an electromagnet; assembling the light emitting element at the individual pixel position using the magnetic chuck; and recovering a remaining light emitting element which is not assembled at the individual pixel position using the magnetic chuck.