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).

  • Publication number: 20250261491
    Abstract: A light-emitting diode (LED) unit for a display including a plurality of pixels each including a first light emitting cell, a second light emitting cell, and a third light emitting cell, each of the first, second, and third light emitting cells including a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer, a first wavelength converter configured to convert a wavelength of light emitted from the first light emitting cell, a second wavelength converter configured to convert a wavelength of light emitted from the second light emitting cell, in which the first, second, and third light emitting cells of each pixel share the first conductivity type semiconductor layer.
    Type: Application
    Filed: April 3, 2025
    Publication date: August 14, 2025
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon LEE, Jong Hyeon CHAE
  • Patent number: 12343441
    Abstract: Disclosed herein are a sterilization module and a sterilization apparatus including the same. The sterilization module includes a support member and multiple germicidal light sources. The multiple germicidal light sources are mounted on the support member and emit germicidal light which is light having a wavelength capable of inactivating microorganisms. In addition, respective light exit surfaces of the multiple germicidal light sources face in different directions from one another. Further, an irradiance of the germicidal light delivered to a sterilization target is greater than a minimum irradiance required for sterilization.
    Type: Grant
    Filed: June 11, 2024
    Date of Patent: July 1, 2025
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon Lee, Ji Won Kim, Jae Hak Jeong
  • Patent number: 12342705
    Abstract: Disclosed is a light emitting display device which may prevent or at least reduce lateral leakage current. The light emitting display device includes a substrate comprising a plurality of first to third subpixels arranged to neighbor one another, each of the first to third subpixels comprising an emission part and a non-emission part to surround the emission part; a bank at the non-emission parts; first electrodes covered with the bank and respectively at the first to third subpixels to expose the respective emission parts; a first spacer structure having an inversed tapered shape configured to surround at least one side of each of the emission parts of the first to third subpixels on the bank; a common layer structure located on the first electrodes and the first spacer structure and disconnected at an edge of the first spacer structure; and a second electrode on the common layer structure.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: June 24, 2025
    Assignee: LG Display Co., Ltd.
    Inventors: Seung Ho Heo, Chung Hoon Lee, Dong Hyun Lee, Dong Min Jang
  • Publication number: 20250201785
    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: Application
    Filed: February 25, 2025
    Publication date: June 19, 2025
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Seong Gyu JANG, Ho Joon LEE, Jong Hyeon CHAE, Chung Hoon LEE
  • Publication number: 20250174608
    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: Application
    Filed: January 17, 2025
    Publication date: May 29, 2025
    Applicant: Seoul Semiconductor Co., Ltd.
    Inventor: Chung Hoon LEE
  • Publication number: 20250160094
    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: Application
    Filed: January 14, 2025
    Publication date: May 15, 2025
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon LEE, Jong Hyeon CHAE
  • Publication number: 20250113689
    Abstract: The disclosed technology relates to a light emitting device and a light emitting apparatus having the same. The disclosed technology discloses a light emitting apparatus 10 including a substrate 100 and a plurality of light emitting devices 200 disposed on the substrate 100, and at least one substrate common electrode 110 and a plurality of substrate individual electrodes 120 formed on the substrate 100, wherein N light emitting devices 2001˜200N (N is a natural number greater than or equal to 2) are commonly connected to the substrate common electrode 110 to form a light emitting group G.
    Type: Application
    Filed: August 1, 2024
    Publication date: April 3, 2025
    Inventors: Chung Hoon LEE, Eun Mi CHOI, Mi So KO
  • 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