Patents by Inventor Yong-Woo Choi

Yong-Woo 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).

  • Patent number: 11138917
    Abstract: The present disclosure, which relates to a data communication between a micro-controller and a source readout circuit, does not require a clock circuit of a slave, and thus, allows the size of a slave circuit and power consumption to be reduced.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: October 5, 2021
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Yong Woo Choi
  • Publication number: 20210287584
    Abstract: Disclosed is data communication between a microcontroller and a source readout circuit, in which the clock circuit of a slave is not needed, and the size of a slave circuit and the amount of power consumed may be reduced.
    Type: Application
    Filed: March 10, 2021
    Publication date: September 16, 2021
    Inventors: Yong Woo CHOI, Sung Chun KIM, Byoung Sun AHN
  • Patent number: 11014201
    Abstract: A laser welding apparatus for laser-welding a first welding target and a second welding target seated on the first welding target includes a first jig on which the first welding target is seated, a second jig configured to press the first welding target such that the first welding target is adhered to the first jig, a third jig configured to press the second welding target such that the second welding target is adhered to the first welding target, one or more connection members connecting the second jig and the third jig such that the second welding target is pressed by the second jig when the first welding target is pressed by the first jig, and a laser head configured to laser-weld the first welding target and the second welding target by irradiating a laser beam to a specific welding part of the second welding target.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: May 25, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Dong Yang Piston Co., Ltd.
    Inventors: Duck Whan Kim, Kwi Seong Jeong, Jung Han Yu, Young Bum Kum, Young Je Lee, Tae Min Lee, Yong Woo Choi, Chang Jun Lee
  • Publication number: 20210125536
    Abstract: The present disclosure, which relates to a data communication between a micro-controller and a source readout circuit, does not require a clock circuit of a slave, and thus, allows the size of a slave circuit and power consumption to be reduced.
    Type: Application
    Filed: October 22, 2020
    Publication date: April 29, 2021
    Inventor: Yong Woo CHOI
  • Publication number: 20200330806
    Abstract: Provided is a fire extinguisher holder, including: a bracket that includes multiple fixing holes to fix the bracket to a ceiling using fixing means and has a U-shape with one side open; a column part whose upper ends are fixed to the bracket; and a support part that is located at a lower portion of the column part and configured to support a lower surface of the fire extinguisher, and a cap part of the fire extinguisher is sliding-coupled to the bracket to fix the fire extinguisher.
    Type: Application
    Filed: July 16, 2019
    Publication date: October 22, 2020
    Inventor: Yong Woo CHOI
  • Publication number: 20190184502
    Abstract: A laser welding apparatus for laser-welding a first welding target and a second welding target seated on the first welding target includes a first jig on which the first welding target is seated, a second jig configured to press the first welding target such that the first welding target is adhered to the first jig, a third jig configured to press the second welding target such that the second welding target is adhered to the first welding target, one or more connection members connecting the second jig and the third jig such that the second welding target is pressed by the second jig when the first welding target is pressed by the first jig, and a laser head configured to laser-weld the first welding target and the second welding target by irradiating a laser beam to a specific welding part of the second welding target.
    Type: Application
    Filed: July 18, 2018
    Publication date: June 20, 2019
    Inventors: Duck Whan Kim, Kwi Seong Jeong, Jung Han Yu, Young Bum Kum, Young Je Lee, Tae Min Lee, Yong Woo Choi, Chang Jun Lee
  • Patent number: 9871261
    Abstract: A fuel cell stack enclosure includes: a lower housing disposed under a fuel cell stack and having a bottom plate portion provided with a water outlet therein; a sealing cap closing the water outlet from an outside of the lower housing; and an elastic member elastically pulling the sealing cap toward the bottom plate portion of the lower housing.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: January 16, 2018
    Assignees: HYUNDAI MOTOR COMPANY, WOOSHIN INDUSTRIAL CO., LTD.
    Inventors: Jung Han Yu, Young Woo Noh, Jung Do Suh, Duck Whan Kim, Young Bum Kum, Chang Jun Lee, Tae Min Lee, Yong Woo Choi
  • Patent number: 9698438
    Abstract: A ventilation apparatus includes: a controller that determines whether insulation resistance between a fuel cell stack and an enclosure including the fuel cell stack is equal to or smaller than a preset value, and varies a degree of opening of a valve provided between an inlet provided on one side of the enclosure and an air blower injecting air to an interior of the enclosure through the inlet based on the determination.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: July 4, 2017
    Assignees: Hyundai Motor Company, Wooshin Industrial Co., Ltd.
    Inventors: Jung Han Yu, Jung Do Suh, Young Bum Kum, Duck Whan Kim, Chang Jun Lee, Tae Min Lee, Yong Woo Choi
  • Publication number: 20170170498
    Abstract: A fuel cell stack enclosure includes: a lower housing disposed under a fuel cell stack and having a bottom plate portion provided with a water outlet therein; a sealing cap closing the water outlet from an outside of the lower housing; and an elastic member elastically pulling the sealing cap toward the bottom plate portion of the lower housing.
    Type: Application
    Filed: May 20, 2016
    Publication date: June 15, 2017
    Applicants: HYUNDAI MOTOR COMPANY, Wooshin Industrial Co., Ltd., Wooshin Industrial Co., Ltd.
    Inventors: Jung Han YU, Young Woo NOH, Jung Do SUH, Duck Whan KIM, Young Bum KUM, Chang Jun LEE, Tae Min LEE, Yong Woo CHOI
  • Publication number: 20170160617
    Abstract: A liquid crystal display with two insulating substrates. A first insulating substrate has crossing signal lines, a pixel electrode, and a drain electrode electrically connected to the pixel electrode through a contact hole. A spacer is formed on the first signal line of the first insulating substrate, and is wider at a first portion close to the first insulating substrate than at a second portion close to the second insulating substrate, and the drain electrode comprises a first portion and a second portion extending in a different direction with respect to the first portion.
    Type: Application
    Filed: February 17, 2017
    Publication date: June 8, 2017
    Inventors: Joong-Hyun MUN, Jang-Kun SONG, Yong-Woo CHOI, Bo-Sung KIM, Kwan-Wook JUNG, Jung-Ho LEE, Hyo-Rak NAM
  • Patent number: 9672775
    Abstract: Disclosed are method and circuit for synchronizing input and output synchronization signals, which can synchronize an output synchronization signal based on frequency change of an input synchronization signal and limit input and output periods, thereby preventing flickering, a backlight driver of a liquid crystal display device using the same, and a method for driving the backlight driver. The method for synchronizing input and output synchronization signals, includes generating an output synchronization signal whose output period is set based on a comparison result between an input period of an input synchronization signal and a previous output period of the output synchronization signal, and limiting the output period of the output synchronization signal within a predefined limit range from the previous output period.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: June 6, 2017
    Assignee: LG Display Co., Ltd.
    Inventor: Yong-Woo Choi
  • Patent number: 9577103
    Abstract: A liquid crystal display with two insulating substrates. A first insulating substrate has crossing signal lines, a pixel electrode, and a drain electrode electrically connected to the pixel electrode through a contact hole. A spacer is formed on the first signal line of the first insulating substrate, and is wider at a first portion close to the first insulating substrate than at a second portion close to the second insulating substrate, and the drain electrode comprises a first portion and a second portion extending in a different direction with respect to the first portion.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: February 21, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Joong-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Publication number: 20160087293
    Abstract: A ventilation apparatus includes: a controller that determines whether insulation resistance between a fuel cell stack and an enclosure including the fuel cell stack is equal to or smaller than a preset value, and varies a degree of opening of a valve provided between an inlet provided on one side of the enclosure and an air blower injecting air to an interior of the enclosure through the inlet based on the determination.
    Type: Application
    Filed: December 3, 2014
    Publication date: March 24, 2016
    Inventors: Jung Han Yu, Jung Do Suh, Young Bum Kum, Duck Whan Kim, Chang Jun Lee, Tae Min Lee, Yong Woo Choi
  • Publication number: 20150354618
    Abstract: An apparatus for preventing a bolt release includes: a nut hole formed in a body; and an insulating part formed integrally with a bolt coupled to the nut hole and contacting the body, where a plurality of protruded slopes are formed along a circumference of a bonding surface among a plurality of bonding surfaces between the body and the insulating part according to a relative magnitude of hardness or friction coefficient between the body and the insulating part when the bolt is coupled.
    Type: Application
    Filed: October 29, 2014
    Publication date: December 10, 2015
    Inventors: Duck Whan Kim, Jung Han Yu, Yong Woo Choi, Tae Min Lee, Chang Jun Lee
  • Publication number: 20150332633
    Abstract: Disclosed are method and circuit for synchronizing input and output synchronization signals, which can synchronize an output synchronization signal based on frequency change of an input synchronization signal and limit input and output periods, thereby preventing flickering, a backlight driver of a liquid crystal display device using the same, and a method for driving the backlight driver. The method for synchronizing input and output synchronization signals, includes generating an output synchronization signal whose output period is set based on a comparison result between an input period of an input synchronization signal and a previous output period of the output synchronization signal, and limiting the output period of the output synchronization signal within a predefined limit range from the previous output period.
    Type: Application
    Filed: July 27, 2015
    Publication date: November 19, 2015
    Inventor: Yong-Woo CHOI
  • Patent number: 9111494
    Abstract: Disclosed are method and circuit for synchronizing input and output synchronization signals, which can synchronize an output synchronization signal based on frequency change of an input synchronization signal and limit input and output periods, thereby preventing flickering, a backlight driver of a liquid crystal display device using the same, and a method for driving the backlight driver. The method for synchronizing input and output synchronization signals, includes generating an output synchronization signal whose output period is set based on a comparison result between an input period of an input synchronization signal and a previous output period of the output synchronization signal, and limiting the output period of the output synchronization signal within a predefined limit range from the previous output period.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: August 18, 2015
    Assignee: LG Display Co., Ltd.
    Inventor: Yong-Woo Choi
  • Patent number: 9012992
    Abstract: A transfer layer includes a transparent substrate. A buffer layer is formed on the transparent substrate that comprises PbO, GaN, PbTiO3, La0.5Sr0.5CoO3 (LSCO), or LaxPb1-xCoO3 (LPCO) so that separation between the buffer layer and the transparent substrate occurs at substantially high temperatures.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: April 21, 2015
    Assignee: Massachusetts Institute of Technology
    Inventors: Il-Doo Kim, Harry L. Tuller, Yong Woo Choi, Akintunde I. Akinwande
  • Publication number: 20140054591
    Abstract: A liquid crystal display with two insulating substrates. A first insulating substrate has crossing signal lines, a pixel electrode, and a drain electrode electrically connected to the pixel electrode through a contact hole. A spacer is formed on the first signal line of the first insulating substrate, and is wider at a first portion close to the first insulating substrate than at a second portion close to the second insulating substrate, and the drain electrode comprises a first portion and a second portion extending in a different direction with respect to the first portion.
    Type: Application
    Filed: November 1, 2013
    Publication date: February 27, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD
    Inventors: Joong-Hyun MUN, Jang-Kun SONG, Yong-Woo CHOI, Bo-Sung KIM, Kwan-Wook JUNG, Jung-Ho LEE, Hyo-Rak NAM
  • Patent number: 8599354
    Abstract: A liquid crystal display with two insulating substrates. A first insulating substrate has crossing signal lines, a pixel electrode, and a drain electrode electrically connected to the pixel electrode through a contact hole. A spacer is formed on the first signal line of the first insulating substrate, and is wider at a first portion close to the first insulating substrate than at a second portion close to the second insulating substrate.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: December 3, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joong-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Patent number: D923882
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: June 29, 2021
    Assignees: KOREA GYEONGGIDO. CO., LTD., GYEONGGI-DO
    Inventor: Yong Woo Choi