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).

  • Publication number: 20190035980
    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: Application
    Filed: January 13, 2017
    Publication date: January 31, 2019
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Rag DO, Yeon Goog SUNG
  • Publication number: 20190019930
    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: Application
    Filed: January 13, 2017
    Publication date: January 17, 2019
    Inventors: Young Rag DO, Yeon Goog SUNG
  • Patent number: 10145518
    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: November 17, 2016
    Date of Patent: December 4, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Rag Do, Yeon Goog Sung
  • Patent number: 10062804
    Abstract: A method of manufacturing a nano-scale LED electrode assembly including a selective metal ohmic layer is disclosed. Specifically, the method can be useful in increasing conductivity between a nano-scale LED device and electrodes and also reducing contact resistance therebetween by depositing a conductive material in a region in which the nano-scale LED device comes in contact with the electrodes so as to improve the contact between the nano-scale LED device and the electrodes, thereby further improving light extraction efficiency of the nano-scale LED device.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: August 28, 2018
    Assignee: PSI CO., LTD.
    Inventors: Young Rag Do, Yeon Goog Sung
  • Publication number: 20180212090
    Abstract: Disclosed is a thin film solar cell for BIPV capable of improving a utility value for the exterior by visually changing a black color of an inorganic thin film solar cell into a color of reflected light therefrom to exhibit an exterior appearance having the color without substantially lowering efficiency required for a solar cell to thereby facilitate commercialization of the inorganic thin film solar cell. Also disclosed is a thin film solar cell for BIPV capable of maintaining a maximum power conversion efficiency (PCE) required for a solar cell when used as a finishing material of a building envelope, and visually changing a black color of an inorganic thin film solar cell into a color of reflected light therefrom to be suitable for the exterior with only a slight reduction of relative harvesting efficiency and a short circuit photocurrent density without a decrease of an open circuit voltage Voc.
    Type: Application
    Filed: October 11, 2017
    Publication date: July 26, 2018
    Applicants: KOOKMIN UNIVERSITY INDUSTRY ACADEMY COOPERATION FOUNDATION, KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Young Rag DO, Byoung Koun MIN
  • Publication number: 20180182741
    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: Application
    Filed: December 27, 2017
    Publication date: June 28, 2018
    Inventors: Yeon Goog SUNG, Young Rag DO
  • Patent number: 9978725
    Abstract: Provided is an LED lamp using a nano-scale LED electrode assembly. The LED lamp using the nano-scale LED electrode assembly may solve limitations in which, when a nano-scale LED device according to the related art stands up and is three-dimensionally coupled to an electrode, it is difficult to allow the nano-scale LED device to stand up, and when the nano-scale LED devices are coupled to one-to-one correspond to electrodes different from each other, product quality is deteriorated. Thus, the nano-scale LED device having a nano unit may be connected to the two electrodes different from each other without causing defects, and light extraction efficiency may be improved due to the directivity of the nano-scale LED devices connected to the electrodes.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: May 22, 2018
    Assignee: PSI CO., LTD.
    Inventor: Young Rag Do
  • Patent number: 9935241
    Abstract: The present disclosure relates to a method for manufacturing a self-assembled nano-scale LED electrode assembly and more particularly, to a method for manufacturing a self-assembled nano-scale LED electrode assembly in which a nano-scale LED device can be self-aligned on two different electrodes without being chemically and physically damaged and the number of nano-scale LED devices to be mounted can be remarkably increased, and alignment and electrical connection of the LED devices can be further improved.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: April 3, 2018
    Assignee: PSI CO., LTD.
    Inventors: Young Rag Do, Yeon Goog Sung
  • Patent number: 9773761
    Abstract: Provided are a nano-scale LED assembly and a method for manufacturing the same. First, a nano-scale LED device that is independently manufactured may be aligned and connected to two electrodes different from each other to solve a limitation in which a nano-scale LED device having a nano unit is coupled to two electrodes different from each other in a stand-up state. Also, since the LED device and the electrodes are disposed on the same plane, light extraction efficiency of the LED device may be improved. Furthermore, the number of nano-scale LED devices may be adjusted. Second, since the nano-scale LED device does not stand up to be three-dimensionally coupled to upper and lower electrodes, but lies to be coupled to two electrodes different from each other on the same plane, the light extraction efficiency may be very improved.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: September 26, 2017
    Assignee: PSI CO., LTD
    Inventor: Young Rag Do
  • Publication number: 20170250168
    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: Application
    Filed: February 24, 2017
    Publication date: August 31, 2017
    Inventors: Young Rag Do, Yeon Goog Sung
  • Publication number: 20170200859
    Abstract: The present disclosure relates to a method for manufacturing a self-assembled nano-scale LED electrode assembly and more particularly, to a method for manufacturing a self-assembled nano-scale LED electrode assembly in which a nano-scale LED device can be self-aligned on two different electrodes without being chemically and physically damaged and the number of nano-scale LED devices to be mounted can be remarkably increased, and alignment and electrical connection of the LED devices can be further improved.
    Type: Application
    Filed: January 6, 2017
    Publication date: July 13, 2017
    Applicant: PSI Co., Ltd.
    Inventors: Young Rag DO, Yeon Goog SUNG
  • Publication number: 20170141279
    Abstract: A method of manufacturing a nano-scale LED electrode assembly including a selective metal ohmic layer is disclosed. Specifically, the method can be useful in increasing conductivity between a nano-scale LED device and electrodes and also reducing contact resistance therebetween by depositing a conductive material in a region in which the nano-scale LED device comes in contact with the electrodes so as to improve the contact between the nano-scale LED device and the electrodes, thereby further improving light extraction efficiency of the nano-scale LED device.
    Type: Application
    Filed: November 17, 2016
    Publication date: May 18, 2017
    Applicant: PSI Co., Ltd.
    Inventors: Young Rag DO, Yeon Goog SUNG
  • Publication number: 20170138549
    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: Application
    Filed: November 17, 2016
    Publication date: May 18, 2017
    Applicant: PSI Co., Ltd.
    Inventors: Young Rag DO, Yeon Goog SUNG
  • Patent number: 9570425
    Abstract: Provided are a display including a nano-scale LED and a method for manufacturing the same. In detail, nano-scale LED devices, each of which has a nano unit, are connected to nano-scale electrodes without electrical short-circuit to overcome a limitation in which it is difficult to allow nano-scale LED devices according to the related art to stand up and be coupled to electrodes and a limitation in which it is difficult to allow the nano-scale LED devices to be one-to-one coupled to the nano-scale electrodes different from each other, thereby realizing a display including the nano-scale LEDs. Also, the display may have superior light extraction efficiency and prevent defective pixels and the defect of the whole display due to the defects of the nano-scale LED devices, which may rarely occur, from occurring to minimize the defects of the display including the nano-scale LEDs and maintain its original function.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: February 14, 2017
    Assignee: PSI CO., LTD.
    Inventor: Young Rag Do
  • Publication number: 20160211245
    Abstract: Provided are a display including a nano-scale LED and a method for manufacturing the same. In detail, nano-scale LED devices, each of which has a nano unit, are connected to nano-scale electrodes without electrical short-circuit to overcome a limitation in which it is difficult to allow nano-scale LED devices according to the related art to stand up and be coupled to electrodes and a limitation in which it is difficult to allow the nano-scale LED devices to be one-to-one coupled to the nano-scale electrodes different from each other, thereby realizing a display including the nano-scale LEDs. Also, the display may have superior light extraction efficiency and prevent defective pixels and the defect of the whole display due to the defects of the nano-scale LED devices, which may rarely occur, from occurring to minimize the defects of the display including the nano-scale LEDs and maintain its original function.
    Type: Application
    Filed: July 8, 2014
    Publication date: July 21, 2016
    Inventor: Young Rag Do
  • Publication number: 20160172339
    Abstract: Provided is an LED lamp using a nano-scale LED electrode assembly. The LED lamp using the nano-scale LED electrode assembly may solve limitations in which, when a nano-scale LED device according to the related art stands up and is three-dimensionally coupled to an electrode, it is difficult to allow the nano-scale LED device to stand up, and when the nano-scale LED devices are coupled to one-to-one correspond to electrodes different from each other, product quality is deteriorated. Thus, the nano-scale LED device having a nano unit may be connected to the two electrodes different from each other without causing defects, and light extraction efficiency may be improved due to the directivity of the nano-scale LED devices connected to the electrodes.
    Type: Application
    Filed: July 8, 2014
    Publication date: June 16, 2016
    Inventor: Young Rag Do
  • Publication number: 20160148911
    Abstract: Provided are a nano-scale LED assembly and a method for manufacturing the same. First, a nano-scale LED device that is independently manufactured may be aligned and connected to two electrodes different from each other to solve a limitation in which a nano-scale LED device having a nano unit is coupled to two electrodes different from each other in a stand-up state. Also, since the LED device and the electrodes are disposed on the same plane, light extraction efficiency of the LED device may be improved. Furthermore, the number of nano-scale LED devices may be adjusted. Second, since the nano-scale LED device does not stand up to be three-dimensionally coupled to upper and lower electrodes, but lies to be coupled to two electrodes different from each other on the same plane, the light extraction efficiency may be very improved.
    Type: Application
    Filed: July 8, 2014
    Publication date: May 26, 2016
    Inventor: Young Rag Do
  • Patent number: 9293668
    Abstract: A phosphor-converted single-color LED is provided. The phosphor-converted single-color LED includes a long-wavelength pass filter having a special construction. The phosphor-converted single-color LED has high color purity and efficiency despite the use of a phosphor in the form of a nano/micro powder.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: March 22, 2016
    Assignee: PSI CO., LTD.
    Inventors: Young-Rag Do, Yeon-Goog Sung
  • Patent number: 9112112
    Abstract: Disclosed is a subminiature LED element and a manufacturing method thereof. The subminiature LED element includes a first conductive semiconductor layer, an active layer formed on the first conductive semiconductor layer, and a semiconductor light emission element of a micrometer or nanometer size including a second conductive semiconductor layer formed on the active layer, wherein the outer circumference of the semiconductor light emission element is coated with an insulation film.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: August 18, 2015
    Assignee: PSI CO., LTD.
    Inventors: Young-Rag Do, Yeon-Goog Sung
  • Patent number: 9059114
    Abstract: Disclosed is a full-color LED display device and a manufacturing method thereof. The full-color LED display device includes 1) a plurality of first electrodes formed on a substrate, 2) at least five subminiature blue LED elements attached to each unit pixel site formed on the first electrode, 3) an insulation layer formed on the substrate and the blue LED element, 4) a plurality of second electrodes formed on the insulation layer, and 5) a green color conversion layer and a red color conversion layer formed on the second electrode corresponding to partial unit pixel sites selected from the unit pixel sites.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: June 16, 2015
    Assignee: PSI CO., LTD
    Inventors: Young-Rag Do, Yeon-Goog Sung