Patents by Inventor Yong Hoon Choi

Yong Hoon Choi 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: 20210287525
    Abstract: The present invention provides a method for learning latest data considering external influences in an early warning system, and the early warning system for same. The method for learning latest data considering external influences comprises the steps of: an early warning processing device categorizing device monitored variables according to external influences; and the early warning processing device differently applying a pattern learning method for each of the categorized monitored variables.
    Type: Application
    Filed: August 29, 2017
    Publication date: September 16, 2021
    Applicant: Korea Hydro & Nuclear Co., Ltd
    Inventors: Dae Woong KIM, Nam Woo CHOI, Bum Nyun KIM, Hyoung Kyun KIM, Ji In KIM, Ju Hyung KANG, Yong Hoon PARK, Gun Woong SHIN, Yang Seok KIM, Young Sheop PARK, Chi Yong PARK, Byoung Oh LEE, Jong Seog KIM
  • Publication number: 20210280738
    Abstract: A method of fabricating a light emitting device includes (i) determining whether each measurement location is defective or not based on a measurement result of the emission wavelength of each location, (ii) forming a test stacked structure by combining one of the first wafers, one of the second wafers, and one of the third wafers in a set of wafers, and (iii) calculating a combination yield of the test stacked structure based on a count of defective measurement locations that overlap in the test stacked structure.
    Type: Application
    Filed: March 5, 2021
    Publication date: September 9, 2021
    Applicant: SEOUL VIOSYS CO., LTD.
    Inventors: Ji Hoon PARK, Ji Hun KANG, Chae Hon KIM, Yong Hyun BAEK, Hyo Shik CHOI
  • Publication number: 20210193969
    Abstract: An organic light emitting diode display device includes a substrate including at least one subpixel having a non-emitting area and an emitting area; a thin film transistor in the non-emitting area on the substrate; an overcoating layer on the thin film transistor and having a plurality of microlenses at a top surface of the overcoating layer; and a light emitting diode in the emitting area on the overcoating layer and connected to the thin film transistor, wherein a surface of the plurality of microlenses in a sampling area of the emitting area is divided into a plurality of convex portions and a plurality of concave portions with respect to a central surface, and a total volume of the plurality of convex portions with respect to the central surface is equal to a total volume of the plurality of concave portions with respect to the central surface.
    Type: Application
    Filed: December 9, 2020
    Publication date: June 24, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Keum-Kyu MIN, Min-Geun CHOI, Yong-Hoon CHOI
  • Patent number: 11011732
    Abstract: An organic light emitting diode display device includes a substrate having a plurality of subpixels which each have an emission region and a non-emission region defined along an edge of the emission region. A reflective barrier is disposed to correspond to the non-emission region and includes a reflective side surface. An overcoat layer is disposed on an upper portion of the reflective barrier. A light emitting diode includes a first electrode, an organic light emitting layer, and a second electrode, which are sequentially disposed on the overcoat layer. The reflective side surface of the reflective barrier is inversely tapered such that a width thereof is decreased in a traveling direction of light emitted from the organic light emitting layer.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: May 18, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kang-Ju Lee, Keum-Kyu Min, Soo-Kang Kim, Jin-Tae Kim, Yong-Hoon Choi
  • Patent number: 10903282
    Abstract: An organic light emitting display device includes a substrate including a white pixel region, a blue color filter pattern in a first region of the white pixel region, an overcoat layer covering the blue color filer pattern and including a micro-lens, a first electrode on the overcoat layer, an organic emitting layer covering the first electrode, and a second electrode covering the organic emitting layer.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: January 26, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yong-Hoon Choi, So-Young Jo, Min-Geun Choi, Hee-Jung Yang, Soo-Kang Kim
  • Publication number: 20200321557
    Abstract: An electroluminescent display device includes a thin film transistor disposed on a substrate; a passivation layer disposed on the thin film transistor; a plurality of metallic patterns disposed to be spaced apart from each other on the passivation layer; a reflective electrode disposed conforming to the shapes of the plurality of metallic patterns and a top surface of the passivation layer and including a plurality of protruding portions; an overcoat layer disposed on the passivation layer and the reflective electrode and including an opening configured to expose a top surface of each of the plurality of protruding portions; a first electrode disposed on the reflective electrode and the overcoat layer and electrically connected to the reflective electrode; an light-emitting layer disposed on the first electrode; and a second electrode disposed on the light-emitting layer.
    Type: Application
    Filed: June 18, 2020
    Publication date: October 8, 2020
    Inventors: Yong-Hoon CHOI, Won-Hoe KOO, Woo-Ram YOUN
  • Patent number: 10727447
    Abstract: An electroluminescent display device includes a thin film transistor disposed on a substrate; a passivation layer disposed on the thin film transistor; a plurality of metallic patterns disposed to be spaced apart from each other on the passivation layer; a reflective electrode disposed conforming to the shapes of the plurality of metallic patterns and a top surface of the passivation layer and including a plurality of protruding portions; an overcoat layer disposed on the passivation layer and the reflective electrode and including an opening configured to expose a top surface of each of the plurality of protruding portions; a first electrode disposed on the reflective electrode and the overcoat layer and electrically connected to the reflective electrode; an light-emitting layer disposed on the first electrode; and a second electrode disposed on the light-emitting layer.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: July 28, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yong-Hoon Choi, Won-Hoe Koo, Woo-Ram Youn
  • Patent number: 10720597
    Abstract: An electroluminescent display device includes: a substrate including a subpixel; a thin film transistor disposed at the subpixel; an overcoat layer disposed on the thin film transistor; a first electrode disposed on the overcoat layer and electrically connected to the thin film transistor; a bank layer disposed on the overcoat layer and the first electrode, the bank layer including a plurality of openings configured to expose the first electrode and a plurality of opening patterns formed in a bar shape to expose the first electrode and connect the plurality of openings; an emitting layer disposed on the first electrode and the bank layer; and a second electrode disposed on the emitting layer.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: July 21, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Hoon Choi, Keum-Kyu Min, Won-Hoe Koo
  • Patent number: 10693108
    Abstract: A light extraction pattern is disposed in each hole of a first electrode, or a first electrode including round portions and pattern portions is disposed so that light trapped in an emission layer can be output uniformly. In this way, the light extraction efficiency can be effectively improved, and occurrence of a black area can be prevented.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: June 23, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Jin-Tae Kim, Won-Hoe Koo, Yong-Hoon Choi
  • Patent number: 10658623
    Abstract: An electroluminescent display device includes an overcoat layer on a substrate; a plurality of low-refractive members formed of an inorganic matter and disposed on the overcoat layer; a first electrode on the overcoat layer and the plurality of low-refractive members; a bank layer disposed on the overcoat layer and the first electrode and including an opening configured to expose the first electrode; an emitting layer disposed on the first electrode; and a second electrode disposed on the emitting layer, wherein each of the plurality of low-refractive members includes a first flat surface contacting the first electrode, a second flat surface having an area greater than that of the first flat surface and contacting the overcoat layer and first and second inclined surfaces connecting the first flat surface and the second flat surface, and, wherein a refractive index of each of the plurality of low-refractive members is lower than those of the overcoat layer and the first electrode.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: May 19, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yong-Hoon Choi, Won-Hoe Koo
  • Patent number: 10651427
    Abstract: The present disclosure relates to an organic light-emitting diode (OLED) display, and more particularly, to an OLED display having improved light extraction efficiency. According to the present disclosure, since a plurality of holes are formed in a first electrode of a light-emitting diode and a insulating material is disposed in each of the holes, an organic light-emitting layer and a second electrode constitute a microlens, thereby improving light extraction efficiency of the OLED display. As a result, brightness may be improved, and power consumption may be reduced. In particular, since the plurality of holes are formed in the first electrode and the insulating material is disposed in each of the plurality of holes, an interface between the insulating material and the first electrode is decreased, thereby further improving light extraction efficiency.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: May 12, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Woo-Ram Youn, Yong-Hoon Choi
  • Patent number: 10566575
    Abstract: An organic light emitting diode (OLED) lighting apparatus includes a substrate including a plurality of emission areas and a plurality of non-emission areas surrounding edges of the plurality of emission areas, an overcoat layer disposed on the substrate and having a first non-flat top surface in at least one of the emission areas and a second non-flat top surface in at least one of the non-emission area, an auxiliary electrode disposed on the second non-flat top surface and including a reflective material, a first electrode disposed on the first non-flat top surface in at least one of the emission areas and disposed on the auxiliary electrode in the non-emission areas, an organic emitting layer on the first electrode, and a second electrode on the organic emitting layer, wherein the auxiliary electrode and the first electrode are in electrical contact with each other.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: February 18, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kang-Ju Lee, Min-Geun Choi, Jin-Tae Kim, Yong-Hoon Choi
  • Patent number: 10529784
    Abstract: There are disclosed a temperature sensor and a method for manufacturing the same. The temperature sensor comprises; a sensor unit including an organic light emitting layer including a delayed fluorescent material; a temperature transfer unit located below the sensor unit to transfer an external temperature to the sensor unit; a first electrode located on the sensor unit; a second electrode located below the sensor unit to be spaced apart from the temperature transfer unit; and a light intensity measuring unit located below the second electrode and measuring the intensity of light emitted from the organic light emitting layer. The temperature sensor can measure a temperature by using a change in the intensity of light using delayed fluorescence, thereby providing improved sensitivity.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: January 7, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Tae Whan Kim, Young Pyo Jeon, Yong Hoon Choi, Yu Ra Kim
  • Patent number: 10424761
    Abstract: An electroluminescent display device includes a substrate including an emissive area and a non-emissive area, a plurality of protrusions over the substrate and in the emissive area, each of the plurality of protrusions spaced apart from each other with an air gap therebetween, a high-viscosity material layer on the plurality of protrusions and the air gaps, a first electrode on the high-viscosity material layer, an emitting layer on the first electrode, and a second electrode on the emitting layer.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: September 24, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Hoon Choi, Won-Hoe Koo
  • Patent number: 10386987
    Abstract: A remote controller apparatus including: a communicator configured to communicate with an external device displaying a pointing object thereon; a sensor configured to sense a movement of the remote controller apparatus; and a controller configured to control movement of the pointing object based on the movement of the remote controller apparatus, determine position information corresponding to the movement of the remote controller apparatus with a first method when the remote controller apparatus operates in a first operating mode, determine the position information corresponding to the movement of the remote controller apparatus with a second method when the remote controller apparatus operates in a second operating mode, control the movement of the pointing object based on the position information, and change the operating mode of the remote controller apparatus in response to a preset event occurring.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: August 20, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung-hyun Choi, Yong-hoon Choi
  • Patent number: 10355234
    Abstract: An organic light emitting diode includes: a first electrode including a concave part or a convex part; an organic light emitting layer disposed on the first electrode; and a second electrode disposed on the organic light emitting layer.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: July 16, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Hoon Choi, Won-Hoe Koo, Jin-Tae Kim, Soo-Kang Kim, Ji-Hyang Jang
  • Publication number: 20190165320
    Abstract: An electroluminescent display device includes a thin film transistor disposed on a substrate; a passivation layer disposed on the thin film transistor; a plurality of metallic patterns disposed to be spaced apart from each other on the passivation layer; a reflective electrode disposed conforming to the shapes of the plurality of metallic patterns and a top surface of the passivation layer and including a plurality of protruding portions; an overcoat layer disposed on the passivation layer and the reflective electrode and including an opening configured to expose a top surface of each of the plurality of protruding portions; a first electrode disposed on the reflective electrode and the overcoat layer and electrically connected to the reflective electrode; an light-emitting layer disposed on the first electrode; and a second electrode disposed on the light-emitting layer.
    Type: Application
    Filed: November 21, 2018
    Publication date: May 30, 2019
    Inventors: Yong-Hoon CHOI, Won-Hoe KOO, Woo-Ram YOUN
  • Publication number: 20190131581
    Abstract: An electroluminescent display device includes an overcoat layer on a substrate; a plurality of low-refractive members formed of an inorganic matter and disposed on the overcoat layer; a first electrode on the overcoat layer and the plurality of low-refractive members; a bank layer disposed on the overcoat layer and the first electrode and including an opening configured to expose the first electrode; an emitting layer disposed on the first electrode; and a second electrode disposed on the emitting layer, wherein each of the plurality of low-refractive members includes a first flat surface contacting the first electrode, a second flat surface having an area greater than that of the first flat surface and contacting the overcoat layer and first and second inclined surfaces connecting the first flat surface and the second flat surface, and, wherein a refractive index of each of the plurality of low-refractive members is lower than those of the overcoat layer and the first electrode.
    Type: Application
    Filed: October 25, 2018
    Publication date: May 2, 2019
    Inventors: Yong-Hoon CHOI, Won-Hoe KOO
  • Publication number: 20190131580
    Abstract: The present disclosure relates to an organic light-emitting diode (OLED) display, and more particularly, to an OLED display having improved light extraction efficiency. According to the present disclosure, since a plurality of holes are formed in a first electrode of a light-emitting diode and a insulating material is disposed in each of the holes, an organic light-emitting layer and a second electrode constitute a microlens, thereby improving light extraction efficiency of the OLED display. As a result, brightness may be improved, and power consumption may be reduced. In particular, since the plurality of holes are formed in the first electrode and the insulating material is disposed in each of the plurality of holes, an interface between the insulating material and the first electrode is decreased, thereby further improving light extraction efficiency.
    Type: Application
    Filed: October 23, 2018
    Publication date: May 2, 2019
    Inventors: Woo-Ram YOUN, Yong-Hoon CHOI
  • Publication number: 20190131578
    Abstract: An organic light emitting diode display device includes a substrate having a plurality of subpixels which each have an emission region and a non-emission region defined along an edge of the emission region. A reflective barrier is disposed to correspond to the non-emission region and includes a reflective side surface. An overcoat layer is disposed on an upper portion of the reflective barrier. A light emitting diode includes a first electrode, an organic light emitting layer, and a second electrode, which are sequentially disposed on the overcoat layer. The reflective side surface of the reflective barrier is inversely tapered such that a width thereof is decreased in a traveling direction of light emitted from the organic light emitting layer.
    Type: Application
    Filed: October 1, 2018
    Publication date: May 2, 2019
    Inventors: Kang-Ju LEE, Keum-Kyu MIN, Soo-Kang KIM, Jin-Tae KIM, Yong-Hoon CHOI