公开(公告)号：US12154934B2

公开(公告)日：2024-11-26

申请号：US17970573

申请日：2022-10-21

Applicant: SEOUL VIOSYS CO., LTD.

Inventor： Jong Hyeon Chae ,  Seom Geun Lee ,  Seong Kyu Jang

IPC: H01L27/15 ,  H01L25/075 ,  H01L33/00 ,  H01L33/22 ,  H01L33/42 ,  H01L33/60 ,  H01L33/62

Abstract: A light emitting device for a display including a first LED stack configured to generate light having a first peak wavelength, a second LED stack disposed under the first LED stack, and configured to generate light having a second peak wavelength, a third LED stack disposed under the second LED stack, and configured to generate light having a third peak wavelength; and a floating reflection layer disposed over the first LED stack, in which the first peak wavelength is longer than the second and third peak wavelengths, the first LED stack has a roughened surface to increase the luminous intensity of the light generated in the first LED stack entering the second LED stack, and the floating reflection layer has a high reflectance of 80% or more over light having the first peak wavelength.

公开(公告)号：US12040344B2

公开(公告)日：2024-07-16

申请号：US17318475

申请日：2021-05-12

Applicant: SEOUL VIOSYS CO., LTD.

Inventor： Seong Kyu Jang ,  Seom Geun Lee ,  Yong Woo Ryu

IPC: H01L27/15 ,  H01L33/62

CPC classification number: H01L27/15 ,  H01L33/62 ,  H01L2933/0066

Abstract: A stacked light emitting device includes a first LED stack, a second LED stack disposed under the first LED stack, a third LED stack disposed under the second LED stack, and a plurality of pads disposed over the first LED stack. Each of the first, second, and third LED stacks has a light generation region and a peripheral region disposed around the light generation region. The plurality of pads is disposed on the peripheral region of the first LED stack.

公开(公告)号：US11842987B2

公开(公告)日：2023-12-12

申请号：US17866249

申请日：2022-07-15

Applicant: Seoul Viosys Co., Ltd

Inventor： Seong Kyu Jang ,  Seom Geun Lee ,  Chan Seob Shin ,  Ho Joon Lee

IPC: H01L25/075 ,  H01L33/58 ,  H01L33/00 ,  H01L33/62

CPC classification number: H01L25/0753 ,  H01L33/0093 ,  H01L33/58 ,  H01L33/62 ,  H01L2933/0058 ,  H01L2933/0066

Abstract: A display panel including a circuit board having pads, light emitting devices electrically connected to the pads and arranged on the circuit board, each light emitting device having a first surface facing the circuit board and a second surface opposite to the first surface, a buffer material layer disposed between the circuit board and the light emitting devices to fill a space between the circuit board and the light emitting devices, and a cover layer covering the second surface of the light emitting devices, in which the buffer material layer is disposed under the first surfaces of the light emitting devices and has grooves in a region between adjacent light emitting devices, a portion of a top surface of the buffer material layer is disposed between adjacent light emitting devices, and the cover layer fills the grooves of the buffer material layer.

公开(公告)号：US11621253B2

公开(公告)日：2023-04-04

申请号：US16666626

申请日：2019-10-29

Applicant: SEOUL VIOSYS CO., LTD.

Inventor： Jong Hyeon Chae ,  Chan Seob Shin ,  Seom Geun Lee ,  Ho Joon Lee ,  Seong Kyu Jang

IPC: H01L25/075 ,  H01L33/08 ,  H01L33/62 ,  H01L33/00

Abstract: A light emitting device including a first light emitting part having a first area, a second light emitting part having a second area, and a third light emitting part having a third area, in which the first light emitting part is disposed on the same plane as the second light emitting part, the third light emitting part is disposed over the first and second light emitting parts, and the third area is larger than each of the first and second areas.

公开(公告)号：US11515450B2

公开(公告)日：2022-11-29

申请号：US16830191

申请日：2020-03-25

Applicant: Seoul Viosys Co., Ltd.

Inventor： Seong Kyu Jang ,  Ju Yong Park ,  Kyu Ho Lee ,  Joon Hee Lee

IPC: H01L33/40 ,  H01L33/38 ,  H01L33/62 ,  H01L33/32 ,  H01L33/06 ,  H01L33/42 ,  H01L33/20

Abstract: A semiconductor light emitting device includes a first semiconductor layer, an active layer disposed on the first semiconductor layer to emit ultraviolet light, a second semiconductor layer disposed on the active layer, and a first electrode disposed on the first semiconductor layer and being in Ohmic contact with a portion of the first semiconductor layer, the first electrode including a contact electrode including aluminum (Al) and at least one other material and having a first region adjacent to the first semiconductor layer and a second region, with each region having an Al composition ratio defined by the amount of Al relative to the amount of the at least one other material. The Al composition ratio of the first region is greater than the Al composition ratio of the second region, and a metal layer disposed on the contact electrode.

公开(公告)号：US11508778B2

公开(公告)日：2022-11-22

申请号：US15930979

申请日：2020-05-13

Applicant: SEOUL VIOSYS CO., LTD.

Inventor： Seom Geun Lee ,  Seong Kyu Jang ,  Chan Seob Shin ,  Ho Joon Lee

IPC: H01L27/15 ,  H01L33/30 ,  H01L33/38 ,  H01L33/42 ,  H01L33/62 ,  H01L25/065 ,  H01L33/44

Abstract: A light emitting device for a display including a first LED stack, a second LED stack disposed thereunder, a third LED stack disposed thereunder and including first and second conductivity type semiconductor layers, a first bonding layer between the second and third LED stacks, a second bonding layer between the first and second LED stacks, an insulation layer between the second bonding layer and the second LED stack, lower buried layers passing through the second LED stack and the insulation layer and electrically connected to the first and second conductivity type semiconductor layers of the third LED stack, respectively, upper buried layers passing through the first LED stack and the second bonding layer and electrically connected to the lower buried layers, and upper connectors disposed on the first LED stack and including upper connectors covering and electrically connected to the upper buried layers, respectively.

公开(公告)号：US12176378B2

公开(公告)日：2024-12-24

申请号：US16943373

申请日：2020-07-30

Applicant: SEOUL VIOSYS CO., LTD.

Inventor： Jong Hyeon Chae ,  Seom Geun Lee ,  Seong Kyu Jang

IPC: H01L27/15

Abstract: A display panel including a circuit board having pads thereon, and a plurality of pixel regions arranged on the circuit board, each of the pixel regions including a first LED stack disposed on the circuit board, a first bonding layer disposed between the first LED stack and the circuit board, a second LED stack disposed on the first LED stack, a third LED stack disposed on the second LED stack, first through-vias passing through the first LED stack and the first bonding layer, second through-vias passing through the second LED stack, and third through-vias passing through the third LED stack, in which the first through-vias pass through the first LED stack and the first bonding layer, and are connected to the pads of the circuit board.

公开(公告)号：US11508704B2

公开(公告)日：2022-11-22

申请号：US17121651

申请日：2020-12-14

Applicant: SEOUL VIOSYS CO., LTD.

Inventor： Jong Hyeon Chae ,  Ik Kyu You ,  Seom Geun Lee ,  Seong Kyu Jang ,  Yong Woo Ryu

IPC: H01L25/075 ,  H01L33/62 ,  H01L23/00

Abstract: A display panel including a circuit board having first pads, a plurality of light emitting devices disposed on the circuit board and having second pads, at least one of the light emitting devices including a repaired light emitting device, and a metal bonding layer bonding the first pads and the second pads, in which the metal bonding layer of the repaired light emitting device has at least one of a thickness and a composition different from that of the metal bonding layer of the remaining light emitting devices.

公开(公告)号：US11482566B2

公开(公告)日：2022-10-25

申请号：US16940394

申请日：2020-07-28

Applicant: SEOUL VIOSYS CO., LTD.

Inventor： Jong Hyeon Chae ,  Seom Geun Lee ,  Seong Kyu Jang

IPC: H01L27/15 ,  H01L25/075 ,  H01L33/22 ,  H01L33/42 ,  H01L33/60 ,  H01L33/62 ,  H01L33/00

Abstract: A light emitting device for a display including a first LED stack configured to generate light having a first peak wavelength, a second LED stack disposed under the first LED stack, and configured to generate light having a second peak wavelength, a third LED stack disposed under the second LED stack, and configured to generate light having a third peak wavelength, and a floating reflection layer disposed over the first LED stack, and configured to reflect light having the first peak wavelength, in which the first peak wavelength is longer than the second and third peak wavelengths.

公开(公告)号：US11424224B2

公开(公告)日：2022-08-23

申请号：US16855258

申请日：2020-04-22

Applicant: Seoul Viosys Co., Ltd

Inventor： Seong Kyu Jang ,  Seom Geun Lee ,  Chan Seob Shin ,  Ho Joon Lee

IPC: H01L25/075 ,  H01L33/58 ,  H01L33/00 ,  H01L33/62

Abstract: A display panel including a circuit board having pads, light emitting devices electrically connected to the pads and arranged on the circuit board, each light emitting device having a first surface facing the circuit board, and a buffer material layer disposed between the circuit board and the light emitting devices to fill a space between the circuit board and the light emitting devices, in which the buffer material layer is disposed under the first surfaces of the light emitting devices.