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: 11749708
    Abstract: A display apparatus includes a display substrate, and light emitting devices arranged on an upper surface of the display substrate. At least one of the light emitting devices includes a first LED unit including a first light emitting stack, a second LED unit including a second light emitting stack, and a third LED unit including a third light emitting stack. Each of the first to third light emitting stacks includes a first conductivity type semiconductor layer and a second conductivity type semiconductor layer. the first conductivity type semiconductor layer and the second conductivity type semiconductor layer in each of the first to third light emitting stacks are stacked in a horizontal direction with respect to the upper surface of the display substrate. At least one of the second conductivity type semiconductor layers in the first to third light emitting stacks is divided into two regions.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: September 5, 2023
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon Lee, So Ra Lee
  • Publication number: 20230268323
    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: April 16, 2023
    Publication date: August 24, 2023
    Inventor: Chung Hoon Lee
  • Patent number: 11735569
    Abstract: A light emitting device module includes a substrate, a plurality of light emitting devices mounted on the substrate, an adhesive layer interposed between the substrate and the light emitting device; and bonding wires electrically connecting the plurality of light emitting devices. The substrate includes an outer electrode in at least a partial region, and the adhesive layer has a non-conductive material.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: August 22, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventor: Chung Hoon Lee
  • Publication number: 20230261033
    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: April 19, 2023
    Publication date: August 17, 2023
    Inventors: Jong Hyeon CHAE, Seong Gyu Jang, Ho Joon Lee, Chang Yeon Kim, Chung Hoon Lee
  • Publication number: 20230253394
    Abstract: A light emitting device including a substrate, at least two light emitting cells disposed on the substrate, a light shielding layer disposed between the at least two light emitting cells, and having openings each exposing one surface of each of the light emitting cells, and bonding parts filling the openings, and disposed between the light emitting cells and the substrate.
    Type: Application
    Filed: April 18, 2023
    Publication date: August 10, 2023
    Inventor: Chung Hoon Lee
  • Publication number: 20230225026
    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: March 22, 2023
    Publication date: July 13, 2023
    Inventor: Chung Hoon LEE
  • Publication number: 20230223424
    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: March 15, 2023
    Publication date: July 13, 2023
    Inventors: Jong Hyeon CHAE, Chung Hoon Lee, Seong Gyu Jang, Chang Yeon Kim, Ho Joon Lee
  • Publication number: 20230215846
    Abstract: A light emitting device according to an exemplary embodiment includes a first light emission region and a second light emission region. The first and second light emission regions include a first conductivity type semiconductor layer, a second conductivity type semiconductor layer, and an active region formed between the first conductivity type semiconductor layer and the second conductivity type semiconductor layer, respectively, an area of the first light emission region is larger than an area of the second emission region, and at least one of the first emission region or the second emission region emits light of a plurality of peak wavelengths.
    Type: Application
    Filed: December 26, 2022
    Publication date: July 6, 2023
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Dae Hong MIN, Yong Hyun BAEK, Ji Hun KANG, Chung Hoon LEE
  • Publication number: 20230213174
    Abstract: The present invention relates to a backlight unit for use in a display device. The backlight unit includes a circuit board, at least one light-emitting diode chip mounted on the circuit board, a plurality of reflection members arranged on the upper part of the light-emitting diode chip, and a light diffusing member. The light diffusing member has an incident surface on which light enters and an emitting surface from which light is emitted. The light diffusing member is arranged on the upper part of the circuit board. The plurality of reflection members are stacked on each other and reflect a part of light emitted from the upper surface of the light-emitting diode chip.
    Type: Application
    Filed: March 6, 2023
    Publication date: July 6, 2023
    Inventor: Chung Hoon LEE
  • Patent number: 11664355
    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: December 1, 2020
    Date of Patent: May 30, 2023
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventor: Chung Hoon Lee
  • Patent number: 11664363
    Abstract: A method for manufacturing a light emitting device including forming a plurality of first light emitting cells and a plurality of second light emitting cells on one surface of a first substrate, providing a second substrate to face the first and second light emitting cells, selectively bonding the first light emitting cells onto the second substrate, and cutting the second substrate to a mounting unit including at least two first light emitting cells.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: May 30, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventor: Chung Hoon Lee
  • Patent number: 11664409
    Abstract: A light emitting diode (LED) stack for a display including a substrate, a first LED stack disposed on the substrate, a second LED stack disposed on the first LED stack, a third LED stack disposed on the second LED stack, a first color filter interposed between the first LED stack and the second LED stack, and a second color filter interposed between the second LED stack and the third LED stack, in which the second LED stack and the third LED stack are configured to transmit light generated from the first LED stack to the outside, and the third LED stack is configured to transmit light generated from the second LED stack to the outside.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: May 30, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Chung Hoon Lee, Seong Gyu Jang, Chang Yeon Kim, Ho Joon Lee
  • Patent number: 11664410
    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: Grant
    Filed: November 4, 2021
    Date of Patent: May 30, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Hyeon Chae, Seong Gyu Jang, Ho Joon Lee, Chang Yeon Kim, Chung Hoon Lee
  • Publication number: 20230143510
    Abstract: A light emitting device for a display including a transparent member laterally extending in a first direction and having a first region and a second region surrounding the first region, first to third light emission regions disposed on the transparent member, a support substrate, first to fourth electrode pads disposed between the transparent member and the support substrate, and vias electrically connecting the electrode pads to the light emission regions, respectively, in which the fourth electrode pad is electrically connected to at least one of the vias, each light emission region is disposed in the first region and does not overlap the second region in a second direction, and the fourth electrode pad overlaps one of the vias and one of the light emission regions in the second direction, and the one of the vias and the one of the light emission regions are separated from each other.
    Type: Application
    Filed: December 12, 2022
    Publication date: May 11, 2023
    Inventors: Jong Hyeon CHAE, Chung Hoon LEE, Chang Yeon KIM, Seong Gyu JANG, Ho Joon LEE, Jong Min JANG
  • Patent number: 11641008
    Abstract: A light emitting device including a first light emitting cell, a second light emitting cell, and a third light emitting cell each including a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer, pads electrically connected to the first, second, and third light emitting cells, a first wavelength converter configured to convert a wavelength of light emitted from the first light emitting cell into a first wavelength, and a second wavelength converter configured to convert a wavelength of light emitted from the second light emitting cell into a second wavelength longer than the first wavelength, in which the first light emitting cell has a larger area than the third light emitting cell, and the second light emitting cell has a larger area than the first light emitting cell.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: May 2, 2023
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon Lee, Sung Su Son, Jong Ik Lee, Jae Hee Lim, Motonobu Takeya, Seung Sik Hong
  • Patent number: 11632836
    Abstract: A light-emitting apparatus includes a first light emitter configured to emit visible light and including a plurality of light sources having color temperatures different from each other, a second light emitter configured to emit infrared rays, and a controller configured to adjust characteristics of the visible light and the infrared rays by controlling the first and second light emitters, in which each of the light sources includes a light-emitting diode chip and a wavelength conversion unit configured to convert a wavelength rage of light emitted from the light-emitting diode chip.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: April 18, 2023
    Assignee: Seoul Semiconductor Co., Ltd.
    Inventor: Chung Hoon Lee
  • Publication number: 20230106914
    Abstract: A pixel device including a pixel, a planarization layer covering side surfaces and an upper surface of the pixel, and pixel device pads disposed on the planarization layer, in which the pixel includes a first light emitting stack, a second light emitting stack disposed under the first light emitting stack, a third light emitting stack disposed under the second light emitting stack, and pixel pads electrically connected to the first, second, and through third light emitting stacks, the pixel device pads are electrically connected to the pixel pads through the planarization layer, and at least a portion of each of the pixel device pads extends from an upper region of the pixel to an inner surface of the planarization layer formed between the planarization layer and the pixel.
    Type: Application
    Filed: October 4, 2022
    Publication date: April 6, 2023
    Inventors: Jong Min JANG, Chung Hoon Lee, Jin Hwa Shin, Sung Hyun Lee, Seung Jo Yun
  • Publication number: 20230101837
    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: December 5, 2022
    Publication date: March 30, 2023
    Inventors: Chung Hoon LEE, Jong Hyeon Chae
  • Publication number: 20230093367
    Abstract: A light emitting device and a light emitting module having the same are provided. A light emitting device includes: a first conductivity type semiconductor layer; a second conductivity type semiconductor layer; and an active layer disposed between the first conductivity type semiconductor layer and the second conductivity type semiconductor layer, in which, upon operation, the active layer emits light of a first peak wavelength and light of a second peak wavelength in which the first peak wavelength may be within a range of about 400 nm to about 415 nm, and the second peak wavelength may be greater than or equal to about 440 nm.
    Type: Application
    Filed: November 29, 2022
    Publication date: March 23, 2023
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Yong Hyun BAEK, Dae Hong MIN, Ji Hun KANG, Chung Hoon LEE
  • Patent number: 11611021
    Abstract: A light emitting device including a first light emitting cell, a second light emitting cell, and a third light emitting cell each including a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer, pads electrically connected to the first, second, and third light emitting cells, a first wavelength converter configured to convert a wavelength of light emitted from the first light emitting cell into a first wavelength, and a second wavelength converter configured to convert a wavelength of light emitted from the second light emitting cell into a second wavelength longer than the first wavelength, in which the first light emitting cell has a larger area than the third light emitting cell, and the second light emitting cell has a larger area than the first light emitting cell.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: March 21, 2023
    Assignee: SEOUL VIOSYS CO., LTD.
    Inventors: Chung Hoon Lee, Sung Su Son, Jong Ik Lee, Jae Hee Lim, Motonobu Takeya, Seung Sik Hong