Patents by Inventor Young-Rag Do

Young-Rag Do 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: 11635176
    Abstract: The present invention relates to a nano-scale light emitting diode (LED) electrode assembly emitting polarized light, a method of manufacturing the same, and a polarized LED lamp having the same, and more particularly, to a nano-scale LED electrode assembly in which partially polarized light close to light that is linearly polarized having one direction is emitted as an emitted light when applying a driving voltage to the nano-scale LED electrode assembly and also nano-scale LED devices are connected to a nano-scale electrode without defects such as an electrical short circuit while maximizing a light extraction efficiency, a method of manufacturing the same, and a polarized LED lamp having the same.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: April 25, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Rag Do, Yeon Goog Sung
  • Publication number: 20230114186
    Abstract: The present invention relates to a flexible skin patch equipped with an ultra-thin LED assembly that emits light in a specific wavelength range and an invention for manufacturing the same, and is related to an invention capable of providing a flexible skin patch that has the excellent effect of promoting vitamin D production in a localized area of the skin, and has the effect of alleviating or treating local skin psoriasis, fungi, fungal tumors and eczema, and has excellent antiviral effect, and is easy to attach and detach.
    Type: Application
    Filed: August 2, 2022
    Publication date: April 13, 2023
    Applicant: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventors: Young Rag DO, Min Ji KO
  • Publication number: 20230056417
    Abstract: Provided is a method of manufacturing a nanorod. The method comprising comprises the steps of: providing a growth substrate and a support substrate; epitaxially growing a nanomaterial layer onto one surface of the growth substrate; forming a sacrificial layer on one surface of the support substrate; bonding the nanomaterial layer with the sacrificial layer; separating the growth substrate from the nanomaterial layer; flattening the nanomaterial layer; forming a nanorod by etching the nanomaterial layer; and separating the nanorod by removing the sacrificial layer.
    Type: Application
    Filed: September 19, 2022
    Publication date: February 23, 2023
    Inventors: Young Rag DO, Yeon Goog SUNG
  • Patent number: 11552232
    Abstract: Provided is a ultra-small light-emitting diode (LED) electrode assembly including a base substrate; an electrode line formed on the base substrate, and including a first electrode and a second electrode formed in a line shape to be interdigitated with each other while being spaced apart from each other; and at least one ultra-small LED device connected to the electrode line. A cross section of at least one of the first and second electrodes in a vertical direction has a height variation such that the first and second electrodes easily come in contact with the at least one ultra-small LED device.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: January 10, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Rag Do, Yeon Goog Sung
  • Patent number: 11538799
    Abstract: Provided are a display including a very-small light-emitting diode (LED) and a method of manufacturing the same. The display includes a panel in which a first signal line and a second signal line are disposed in a lattice form, an LED module including an electrode assembly having a first electrode connected to the first signal line and the second signal line and a second electrode connected to a ground, and a plurality of very-small LEDs connected to the first electrode and the second electrode, and two or more switches which connect the first signal line and the second signal line to the first electrode, wherein the second electrode is connected to a common electrode formed on the panel, at least one other LED module is grounded to the common electrode, and the two or more switches selectively provide a current supplied through the first signal line to the first electrode on the basis of a signal of the first signal line and a signal of the second signal line.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: December 27, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Rag Do, Yeon Goog Sung
  • Patent number: 11495585
    Abstract: Provided are a method of manufacturing a nanoscale light-emitting diode (LED) electrode assembly having improved electrical contacts, and more particularly, a nanoscale LED electrode assembly having improved electrical contacts and capable of increasing conductivity between electrodes and nanoscale LED devices and decreasing contact resistance, and a method of manufacturing the same.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: November 8, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yeon Goog Sung, Young Rag Do
  • Publication number: 20220310884
    Abstract: The present disclosure relates to a full-color light-emitting diode (LED) display, and more particularly, to a full-color LED display using an ultra-thin LED element and a manufacturing method thereof.
    Type: Application
    Filed: December 29, 2021
    Publication date: September 29, 2022
    Applicant: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventor: Young Rag DO
  • Publication number: 20220310878
    Abstract: The present disclosure relates to a light-emitting diode (LED) electrode assembly, and more specifically, to an ultra-thin LED electrode assembly and a manufacturing method thereof.
    Type: Application
    Filed: December 29, 2021
    Publication date: September 29, 2022
    Applicant: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventor: Young Rag DO
  • Patent number: 11450737
    Abstract: Provided is a method of manufacturing a nanorod. The method comprising comprises the steps of: providing a growth substrate and a support substrate; epitaxially growing a nanomaterial layer onto one surface of the growth substrate; forming a sacrificial layer on one surface of the support substrate; bonding the nanomaterial layer with the sacrificial layer; separating the growth substrate from the nanomaterial layer; flattening the nanomaterial layer; forming a nanorod by etching the nanomaterial layer; and separating the nanorod by removing the sacrificial layer.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: September 20, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Rag Do, Yeon Goog Sung
  • Patent number: 11380670
    Abstract: Provided is a method of manufacturing a ultra-small light-emitting diode (LED) electrode assembly, the method including preparing a base substrate, forming an electrode line including a first electrode and a second electrode on the base substrate, positioning a guide member having a plurality of slit portions therein on the base substrate, and inserting ultra-small LED devices into the plurality of slit portions of the guide member.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: July 5, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Rag Do, Yeon Goog Sung
  • Publication number: 20220209043
    Abstract: The present disclosure relates to a method of separating a plurality of light-emitting diode (LED) structures from a wafer. According to the method, the LED structures each having a desired size, thickness, and shape can be separated from the wafer, using a commercialized wafer, without damage to the LED structures even without considering the presence or absence of a sacrificial layer and specifically pre-designing a thickness of semiconductor layers in the wafer from the time of wafer manufacturing.
    Type: Application
    Filed: December 28, 2021
    Publication date: June 30, 2022
    Applicant: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventor: Young Rag DO
  • Publication number: 20220209063
    Abstract: The present invention relates to a light-emitting diode (LED) element, and more particularly, to an ultra-thin LED element, and inkjet ink and a light source including the same.
    Type: Application
    Filed: December 28, 2021
    Publication date: June 30, 2022
    Applicant: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventor: Young Rag DO
  • Patent number: 11305091
    Abstract: Disclosed are an apparatus and a system for managing circadian rhythm. The apparatus includes an illuminance measuring portion which measures a bio illuminance value of external light using a circadian lambda filter which passes the external light along according to a circadian rhythm sensitivity curve and a visual lambda filter which passes the external light along according to a visual sensitivity curve, a controller which outputs a control signal for reinforcing a user's circadian rhythm on the basis of the bio illuminance value, and a circadian rhythm reinforcing portion which emits light of a circadian wavelength band toward the user according to the control signal.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: April 19, 2022
    Assignee: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION
    Inventors: Hyun Sun Mo, Young Rag Do, Dae Jeong Kim, Dae Hwan Kim, Sung Yeon Jang, In Hwan Jung, Dong Myung Kim, Seong Jin Choi, Sanggyu Yim, Hyung Min Kim, Sun Woong Choi, Gu Min Jeong, Seung Min Lee
  • Publication number: 20220102331
    Abstract: A display device includes a light-emitting element; a first transistor that transmits a driving current to the light-emitting element; and a second transistor that transmits a data signal to the first transistor. The first transistor includes a first active layer, the second transistor includes a second active layer including an oxide semiconductor, and the light-emitting element includes a first conductivity type semiconductor having a first polarity, a second conductivity-type semiconductor having a second polarity different from the first polarity, and an active layer arranged between the first conductivity type semiconductor and the second conductivity-type semiconductor.
    Type: Application
    Filed: November 25, 2019
    Publication date: March 31, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Young Rag DO, Hoo Keun PARK
  • Publication number: 20220102604
    Abstract: A display device includes a first electrode disposed on a substrate, a second electrode disposed on the substrate, and spaced apart from and facing the first electrode, at least one light emitting element disposed between the first electrode and the second electrode, a first conductive contact pattern disposed on the first electrode and electrically contacting the first electrode and an end of the at least one light emitting element, and a second conductive contact pattern disposed on the second electrode and electrically contacting the second electrode and another end of the at least one light emitting element.
    Type: Application
    Filed: November 25, 2019
    Publication date: March 31, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Young Rag DO, Gang Yeol YOO
  • Publication number: 20220093676
    Abstract: An ultra-small light-emitting diode (LED) electrode assembly having an improved luminance is provided. More particularly, an ultra-small LED electrode assembly in which light, which is blocked by an electrode and cannot be extracted, is minimized, an ultra-small LED device is connected to an ultra-small electrode without a defect such as an electrical short-circuit, and a very excellent luminance is exhibited even at a direct current (DC) driving voltage, and a method of manufacturing the same are provided.
    Type: Application
    Filed: December 6, 2021
    Publication date: March 24, 2022
    Inventors: Young Rag Do, Yun Jae Eo, Yeon Goog Sung
  • Publication number: 20220085247
    Abstract: A light emitting device, a display device including a light emitting device, and a method of manufacturing a display device are provided. A light emitting device may include a substrate, and a plurality of light emitting element layers stacked on the substrate. Each of the light emitting element layers may include an insulating layer entirely disposed on the substrate, a first electrode and a second electrode disposed on the insulating layer and spaced apart from each other, and a plurality of light emitting elements disposed between the first electrode and the second electrode.
    Type: Application
    Filed: July 15, 2019
    Publication date: March 17, 2022
    Inventors: Young Rag DO, Byung Ju LEE
  • Publication number: 20220085249
    Abstract: A light emitting device includes a substrate. First and second electrodes are on the substrate and spaced from each other. A first insulating layer is on the substrate and the first and second electrodes, and includes openings to partially expose opposing portions of the first and second electrodes adjacent an area between the first and second electrodes. At least one light emitting element is located in the opening. A first end of the at least one light emitting element is connected to a first portion of the first electrode exposed by the opening, and a second end of the at least one light emitting element is connected to a second portion of the second electrode exposed by the opening.
    Type: Application
    Filed: July 15, 2019
    Publication date: March 17, 2022
    Inventors: Young Rag DO, Yun Jae EO
  • Publication number: 20220077356
    Abstract: A light emitting device may include a substrate. A light emitting element layer may be disposed on the substrate and may include light emitting elements having a rod shape. A color conversion layer may be disposed on the light emitting element layer and may include color conversion elements having a rod shape. A first alignment direction of the light emitting elements and a second alignment direction of the color conversion elements may be substantially parallel to each other or intersect at a predetermined angle.
    Type: Application
    Filed: July 15, 2019
    Publication date: March 10, 2022
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Rag DO, Yun Jae EO
  • Publication number: 20220077228
    Abstract: A light emitting device may include first electrodes and second electrodes that are spaced apart from each other in a first direction, light emitting elements electrically connected between adjacent first and second electrodes among the first and the second electrodes, and a third electrode spaced apart from the first electrodes and the second electrodes. The third electrode may be electrically separated from the first electrodes and the second electrodes.
    Type: Application
    Filed: July 15, 2019
    Publication date: March 10, 2022
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Rag DO, Yun Jae EO