Patents by Inventor Chung Hoon Lee

Chung Hoon Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12255190
    Abstract: A light emitting diode pixel for a display includes a first subpixel including a first LED sub-unit, a second subpixel including a second LED sub-unit, a third subpixel including a third LED sub-unit, and a bonding layer overlapping the first, second, and third subpixels, in which each of the first, second, and third LED sub-units includes a first type of semiconductor layer and a second type of semiconductor layer, each of the first, second, and third LED sub-units is disposed on a different plane, and light generated from the second subpixel is configured to be emitted to an outside of the light emitting diode pixel by passing through a lesser number of LED sub-units than light generated from the first subpixel and emitted to the outside.
    Type: Grant
    Filed: February 8, 2024
    Date of Patent: March 18, 2025
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Seong Gyu Jang, Ho Joon Lee, Jong Hyeon Chae, Chung Hoon Lee
  • Publication number: 20250089428
    Abstract: Disclosed is a light emitting apparatus. The light emitting apparatus includes a substrate, a plurality of emitters disposed on the substrate and configured to emit light, at least one color-determining layer disposed on the plurality of emitters, and a barrier layer surrounding the color-determining layer.
    Type: Application
    Filed: September 4, 2024
    Publication date: March 13, 2025
    Inventors: Chung Hoon Lee, Nam Goo Cha
  • Publication number: 20250081705
    Abstract: A display device including a substrate, a light emitting stacked structure disposed on the substrate and including a plurality of epitaxial sub-units disposed one over another, a first adhesive layer bonding the epitaxial sub-units to the substrate; and a line part disposed on the substrate and configured to apply a light emitting signal to each of the epitaxial sub-units, in which the light emitting stacked structure is configured to provide light having various colors by a combination of light emitted from each of the epitaxial sub-units, and the first adhesive layer includes a conductive and non-transparent material.
    Type: Application
    Filed: November 19, 2024
    Publication date: March 6, 2025
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon LEE, Jong Hyeon CHAE, Seong Gyu JANG, Ho Joon LEE
  • Publication number: 20250070100
    Abstract: A light emitting device including a first LED sub-unit having a thickness in a first direction, a second LED sub-unit disposed on a portion of the first LED sub-unit in the first direction, each of the first and second LED sub-units comprising a first-type semiconductor layer, a second-type semiconductor layer, and an active layer, a reflective electrode disposed adjacent to the first LED sub-unit and electrically connected to the first-type semiconductor layer of the first LED sub-unit, and a first ohmic electrode forming ohmic contact with the second-type semiconductor layer of the first LED sub-unit, in which the active layer of the first LED sub-unit is configured to generate light, includes AlxGa(1-x-y)InyP (0?x?1, 0?y?1), and overlaps the active layer of the second LED sub-unit in the first direction, and the active layer of the second LED sub-unit includes the same material as the active layer of the first LED sub-unit.
    Type: Application
    Filed: November 7, 2024
    Publication date: February 27, 2025
    Applicant: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon CHAE, Chang Yeon KIM, Ho Joon LEE, Seong Gyu JANG, Chung Hoon LEE, Dae Sung CHO
  • Patent number: 12230666
    Abstract: A display apparatus including a plurality of pixel regions disposed on a support substrate, each of the pixel regions including a plurality of subpixel stacks including a first epitaxial stack, a second epitaxial stack, and a third epitaxial stack, in which light generated from the first epitaxial stack is to be emitted to the outside of the display apparatus through the second and third epitaxial stacks, light generated from the second epitaxial stack is to be emitted to the outside of the display apparatus through the third epitaxial stack, during operation, one of the subpixel stacks within each pixel region is configured to be selected and driven, and at least one subpixel stack further includes an electrode disposed between the first epitaxial stack and the support substrate to be in ohmic contact with the first epitaxial stack.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: February 18, 2025
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon Lee, Jong Hyeon Chae
  • Publication number: 20250056953
    Abstract: A display apparatus including a display substrate, light emitting devices disposed on the display substrate, circuit electrodes disposed between the light emitting devices and the display substrate, and a transparent layer covering the light emitting devices and the circuit electrodes, in which at least one of the light emitting devices includes a first LED sub-unit configured to emit light having a first wavelength, a second LED sub-unit adjacent to the first LED sub-unit and configured to emit light having a second wavelength, a third LED sub-unit adjacent to the second LED sub-unit and configured to emit light having a third wavelength, and a substrate disposed on the third LED sub-unit, in which a difference in refractive indices between the 10 transparent layer and air is less than a difference in refractive indices between the substrate and a semiconductor layer of the third LED sub-unit.
    Type: Application
    Filed: October 31, 2024
    Publication date: February 13, 2025
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon LEE, Dae Sung CHO
  • Patent number: 12218111
    Abstract: A display apparatus including a plurality of display modules each including a module substrate and a plurality of light emitting devices mounted on the module substrate, and a support substrate on which the display modules are disposed and including electrodes, in which the module substrate includes through-holes penetrating the module substrate and vias disposed in the through-holes, and the light emitting devices are electrically connected to the electrodes of the support substrate through the vias.
    Type: Grant
    Filed: April 16, 2023
    Date of Patent: February 4, 2025
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventor: Chung Hoon Lee
  • Patent number: 12199133
    Abstract: A display apparatus including a display substrate, light emitting devices disposed on the display substrate, circuit electrodes disposed between the light emitting devices and the display substrate, and a transparent layer covering the light emitting devices and the circuit electrodes, in which at least one of the light emitting devices includes a first LED sub-unit configured to emit light having a first wavelength, a second LED sub-unit adjacent to the first LED sub-unit and configured to emit light having a second wavelength, a third LED sub-unit adjacent to the second LED sub-unit and configured to emit light having a third wavelength, and a substrate disposed on the third LED sub-unit, in which a difference in refractive indices between the transparent layer and air is less than a difference in refractive indices between the substrate and a semiconductor layer of the third LED sub-unit.
    Type: Grant
    Filed: December 4, 2023
    Date of Patent: January 14, 2025
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon Lee, Dae Sung Cho
  • Patent number: 12183773
    Abstract: A display device including a substrate, a light emitting stacked structure disposed on the substrate and including a plurality of epitaxial sub-units disposed one over another, a first adhesive layer bonding the epitaxial sub-units to the substrate; and a line part disposed on the substrate and configured to apply a light emitting signal to each of the epitaxial sub-units, in which the light emitting stacked structure is configured to provide light having various colors by a combination of light emitted from each of the epitaxial sub-units, and the first adhesive layer includes a conductive and non-transparent material.
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: December 31, 2024
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon Lee, Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee
  • Publication number: 20240418337
    Abstract: A headlamp device includes a headlamp, an object detector, and a controller. The headlamp is mounted on a vehicle and includes a light emitting unit composed of multiple light emitting cells. The object detector detects an object around the vehicle and generates an object detection signal including object coordinates corresponding to a location of the detected object. The controller controls light of the headlamp based on information on the object coordinates. The controller may control the light emitting unit such that at least some light emitting cells are turned off according to an object detection signal. Each of multiple light emitting units includes a circuit board, the multiple light emitting cells separated from each other on the circuit board, a molding member formed between the light emitting structures, and a protective member formed on the molding member to surround sides of the multiple wavelength conversion members while filling a gap between the multiple wavelength conversion members.
    Type: Application
    Filed: August 30, 2024
    Publication date: December 19, 2024
    Inventor: Chung Hoon LEE
  • Publication number: 20240405055
    Abstract: A light emitting device including a substrate having a first region and a second region, a light emitting stack including vertically stacked semiconductor layers disposed on the first region of the substrate, at least one pillar disposed on the second region of the substrate and laterally spaced apart from the light emitting stack, and at least one electrode extending from the first region to the second region of the substrate and electrically connecting the light emitting stack to the at least one pillar, in which the at least one pillar is disposed on the at least one electrode, respectively.
    Type: Application
    Filed: August 13, 2024
    Publication date: December 5, 2024
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventor: Chung Hoon LEE
  • Publication number: 20240395980
    Abstract: A light emitting device including at least one main light emitting unit including a light emitting diode chip and a wavelength converter, and configured to emit white light, in which the light emitting diode chip includes at least one of an ultraviolet chip, a violet chip, and a blue chip, and the light emitting device is configured to be adjustable to emit light corresponding to a spectral power distribution of morning sunlight, light corresponding to a spectral power distribution of afternoon sunlight, and light corresponding to a spectral power distribution of evening sunlight.
    Type: Application
    Filed: August 2, 2024
    Publication date: November 28, 2024
    Applicant: Seoul Semiconductor Co., Ltd.
    Inventors: Hyuck Jun KIM, Chung Hoon LEE, YO CHO
  • Patent number: 12156438
    Abstract: A display device includes a substrate including an emission area and a non-emission area and in which a plurality of sub-pixels are defined, first electrodes disposed in the plurality of sub-pixels, respectively, a bank that is disposed in the non-emission area between the plurality of sub-pixels, and exposes the first electrode through an opening, a protrusion disposed in a second non-emission area of the non-emission area which is divided into a first non-emission area at a flat top surface of the bank and the second non-emission area at an inclined top surface of the bank, an organic layer disposed on the first electrodes, and a second electrode disposed on the organic layer.
    Type: Grant
    Filed: December 14, 2023
    Date of Patent: November 26, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: ByoungHyun Koo, SungWook Yoon, Chung Hoon Lee, DongMin Jang
  • Patent number: 12142602
    Abstract: A light emitting device including a first LED sub-unit having a thickness in a first direction, a second LED sub-unit disposed on a portion of the first LED sub-unit in the first direction, each of the first and second LED sub-units comprising a first-type semiconductor layer, a second-type semiconductor layer, and an active layer, a reflective electrode disposed adjacent to the first LED sub-unit and electrically connected to the first-type semiconductor layer of the first LED sub-unit, and a first ohmic electrode forming ohmic contact with the second-type semiconductor layer of the first LED sub-unit, in which the active layer of the first LED sub-unit is configured to generate light, includes AlxGa(1-x-y)InyP (0?x?1, 0?y?1), and overlaps the active layer of the second LED sub-unit in the first direction, and the active layer of the second LED sub-unit includes the same material as the active layer of the first LED sub-unit.
    Type: Grant
    Filed: June 20, 2022
    Date of Patent: November 12, 2024
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Chang Yeon Kim, Ho Joon Lee, Seong Gyu Jang, Chung Hoon Lee, Dae Sung Cho
  • Publication number: 20240363675
    Abstract: A light emitting diode (LED) stack for a display including a first LED stack including a first conductivity-type semiconductor layer and a second conductivity-type semiconductor layer, a second LED stack disposed on the first LED stack, a third LED stack disposed on the second LED stack, an intermediate bonding layer disposed between the first LED stack and the second LED stack to bond the second LED stack to the first LED stack, an upper bonding layer disposed between the second LED stack and the third LED stack to couple the third LED stack to the second LED stack, and a first hydrophilic material layer disposed between the first LED stack and the upper bonding layer.
    Type: Application
    Filed: July 9, 2024
    Publication date: October 31, 2024
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon CHAE, Seong Gyu JANG, Ho Joon LEE, Chang Yeon KIM, Chung Hoon LEE
  • Publication number: 20240364403
    Abstract: A method of a terminal for transmitting channel state information for one or more beams comprises the steps of: determining whether group-based beam reporting is configured based on channel state information (CSI) reporting configuration information; measuring reference signal received power (RSRP) for one or more channel state information reference signals (CSI-RS) received through one or more CSI-RS resources; and transmitting, to a base station, the channel state information including a value in a table configured in advance based on whether the group-based beam reporting is configured and one or more CSI-RS RSRP measurement results obtained by the measurement.
    Type: Application
    Filed: July 10, 2024
    Publication date: October 31, 2024
    Applicants: HYUNDAI MOTOR COMPANY, Kia Corporation
    Inventors: Sun Woo KIM, Min Soo JEONG, Sung Jin KIM, Jeong Wan KANG, Yong Min SONG, Chung Hoon LEE
  • Publication number: 20240349542
    Abstract: A display apparatus in one example includes a substrate on which a plurality of sub-pixels disposed in an area where an image is displayed are defined, a plurality of anodes disposed in the plurality of sub-pixels on the substrate, an organic layer disposed on the plurality of anodes, a cathode disposed on the organic layer, a bank disposed between the plurality of anodes and the organic layer and between emission areas of each of the plurality of sub-pixels and including a plurality of trenches, and a spacer disposed on the bank and between the plurality of trenches. The organic layer and the cathode are disposed in the bank and the plurality of trenches. The plurality of sub-pixels include a first sub-pixel, a second sub-pixel, and a third sub-pixel.
    Type: Application
    Filed: June 21, 2024
    Publication date: October 17, 2024
    Applicant: LG Display Co., Ltd.
    Inventors: SeungHo HEO, SungWook YOON, Chung Hoon LEE, ByoungHyun KOO, Donghyun LEE, DongMin JANG
  • Publication number: 20240349407
    Abstract: A lighting device including a first light emitter including a plurality of light sources each being configured to emit light with a different color temperature, a second light emitter including at least one light emitting structure to emit light having a different color range than that emitted from the first light emitter, a controller to adjust characteristics of light emitted from the first and second light emitters, a user interface member configured to receive input of a user and connected to the controller, and a storage medium connected to the controller, in which each of the light sources includes a light-emitting diode chip and a wavelength conversion member to convert a wavelength range of light emitted from the light-emitting diode chip, and the controller is further configured to control the first and second light emitters according to a spectrum of light stored in the storage medium.
    Type: Application
    Filed: June 27, 2024
    Publication date: October 17, 2024
    Applicant: Seoul Semiconductor Co., Ltd.
    Inventor: Chung Hoon LEE
  • Publication number: 20240349566
    Abstract: Provided is a display apparatus that includes a substrate in which a plurality of sub pixels are defined; a plurality of light emitting diodes which are disposed in the plurality of sub pixels, the plurality of light emitting diodes having an organic layer shared between the plurality of light emitting diodes and a cathode electrode shared between the plurality of light emitting diodes; a bank disposed below the cathode electrode and between pairs of light emitting diodes from the plurality of light emitting diodes; a plurality of wiring lines disposed between the bank and the substrate; and a first pattern through a thickness of the bank, the first pattern overlapping a first wiring line from the plurality of wiring lines, wherein a first portion of the cathode electrode is disposed outside of the first pattern and a second portion of the cathode electrode is disposed in the first pattern.
    Type: Application
    Filed: June 25, 2024
    Publication date: October 17, 2024
    Inventors: Chung Hoon Lee, SeungHo Heo, SungWook Yoon, Donghyun Lee
  • Publication number: 20240339488
    Abstract: A light emitting diode (LED) pixel for a display including a first LED stack having a first well layer, a second LED stack disposed on the first LED stack and having a second well layer, a third LED stack disposed on the second LED stack and having a third well layer, a first electrode disposed on the first LED stack and in ohmic contact with the first LED stack, a second electrode disposed on the second LED stack and in ohmic contact with a surface of the second LED stack, and a third electrode in ohmic contact with a surface of the third LED stack, in which the first well layer includes at least one base material different from that of the second well layer.
    Type: Application
    Filed: June 17, 2024
    Publication date: October 10, 2024
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Jong Hyeon CHAE, Chung Hoon LEE, Seong Gyu JANG, Chang Yeon KIM, Ho Joon LEE