Patents by Inventor Byeong-Koo Kim

Byeong-Koo Kim 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: 8729953
    Abstract: A method for reducing an off-current of a field effect transistor in which two electrodes of the field effect transistor have fixed voltage values and the rest electrode has an alternating voltage value by an AC voltage pulse generator to form an off-stress near source and drain junctions in turn.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: May 20, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Yong-Min Ha, Kee-Jong Kim, Byeong-Koo Kim
  • Patent number: 7973466
    Abstract: An organic electroluminescent display device includes: a substrate having a pixel region and a non-pixel region surrounding the pixel region; a first electrode on the substrate in the pixel region; an organic luminescent layer on the first electrode; a second electrode on the organic luminescent layer; and a light-shielding means corresponding to the non-pixel region.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: July 5, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Du-Hwan Oh, Hoon-Ju Chung, Byeong-Koo Kim, Yong-Min Ha
  • Patent number: 7450092
    Abstract: An organic light-emitting device includes a first transistor for applying a data voltage; a second transistor for applying a driving current depending on the data voltage and an initiation voltage to an organic light-emitting diode; a third transistor for generating a threshold voltage; a fourth transistor for applying an initiation voltage, the fourth transistor being connected to the third transistor; a fifth transistor for applying a power voltage; and a condenser provided between a first node connected to the third and fifth transistors and a second node connected to the first and second transistors, for maintaining the power voltage and the threshold voltage for compensation.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: November 11, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Byeong Koo Kim, O Hyun Kim, Young Ju Park
  • Patent number: 7220994
    Abstract: A method for fabricating an in-plane switching LCD device includes forming a data line and a light-shielding layer on a substrate, forming a pixel electrode line and an active region with a polycrystalline silicon thin film, forming a first insulating layer on the substrate, forming a gate electrode and a common electrode line on the first insulating layer, forming a second insulating layer on the substrate, forming a first contact hole that exposes at least portions of the data line and the active region, and forming a connection electrode that connects at least portions of the exposed data line and the active region.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: May 22, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Byeong Koo Kim, Yong Min Ha, Hun Jeoung
  • Patent number: 7154568
    Abstract: The present invention relates to a static electricity prevention type liquid crystal display panel for preventing static electricity flowing in through a pad part. A static electricity prevention type liquid crystal display panel according to an embodiment of the present invention includes a picture display part having a plurality of liquid crystal cells; a signal pad part applying a drive signal to be inputted to signal lines of the picture display part, and wherein the signal pad part includes a plurality of pads connected to the signal lines; and a static electricity prevention circuit having a thin film transistor with a floating gate for connecting the pad with a shorting bar by a static electricity flowing into the pad for the pad to form an equipotential with respect to the static electricity.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: December 26, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Byeong Koo Kim, Yong Min Ha, Han Wook Hwang
  • Patent number: 7123230
    Abstract: A system for reducing an OFF-current in a thin film transistor of a liquid crystal display device includes gate and data lines crossing each other, a pixel thin film transistor including gate, source and drain electrodes, the gate electrode connected to the gate line and the source electrode connected to the data line, a liquid crystal capacitor connected to the drain electrode of the pixel thin film transistor, a first switch thin film transistor connected to a first end of the data line, a second switch thin film transistor connected to a first end of the gate line, a first voltage source electrically connected to the drain electrode of the pixel thin film transistor, a second voltage source connected to a source electrode of the first switch thin film transistor, a third voltage source connected to gate electrodes of the first and second switch thin film transistors, and a fourth voltage source connected to a source electrode of the second switch thin film transistor.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: October 17, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jae-Deok Park, Byeong-Koo Kim, Kee-Jong Kim
  • Patent number: 7050036
    Abstract: A shift register employs only a thin film transistor of the same type channel and has a level shifter built-in. A shift register with a built in level shifter includes a plurality of stages and a plurality of level shifters. The stages are connected in cascade to shift a start pulse inputted through an input terminal and sequentially output the shifted pulse. The level shifters level-shift a voltage level of the shifted pulse applied from each of the stages and outputting it.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: May 23, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Byeong Koo Kim, Jae Deok Park, Yong Min Ha
  • Patent number: 7038644
    Abstract: An apparatus for applying an OFF-state stress to a P-MOS device of one of an array substrate for an LCD device and an LCD panel having attached substrates includes: a power supply unit supplies a source power; a panel loading unit including a plurality of panel jigs on which one of the array substrate and the LCD panel is loaded; a voltage control unit including a plurality of voltage control channels and modulating a voltage of the source power; a frequency control unit including a plurality of frequency control channels and modulating a frequency of the source power; a time setting unit determining a time period of supplying the source power; and a panel selecting unit including a plurality of panel selecting channels and modulating an application of the source power.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: May 2, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Byeong-Koo Kim, Hun Jeoung
  • Patent number: 6998283
    Abstract: A method for fabricating an in-plane switching LCD device includes forming a data line and a light-shielding layer on a substrate, forming a pixel electrode line and an active region with a polycrystalline silicon thin film, forming a first insulating layer on the substrate, forming a gate electrode and a common electrode line on the first insulating layer, forming a second insulating layer on the substrate, forming a first contact hole that exposes at least portions of the data line and the active region, and forming a connection electrode that connects at least portions of the exposed data line and the active region.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: February 14, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Byeong Koo Kim, Yong Min Ha, Hun Jeoung
  • Publication number: 20050212447
    Abstract: An organic electroluminescent display device includes: a substrate having a pixel region and a non-pixel region surrounding the pixel region; a first electrode on the substrate in the pixel region; an organic luminescent layer on the first electrode; a second electrode on the organic luminescent layer; and a light-shielding means corresponding to the non-pixel region.
    Type: Application
    Filed: March 23, 2005
    Publication date: September 29, 2005
    Inventors: Du-Hwan Oh, Hoon-Ju Chung, Byeong-Koo Kim, Yong-Min Ha
  • Publication number: 20040266040
    Abstract: A method for fabricating an in-plane switching LCD device includes forming a data line and a light-shielding layer on a substrate, forming a pixel electrode line and an active region with a polycrystalline silicon thin film, forming a first insulating layer on the substrate, forming a gate electrode and a common electrode line on the first insulating layer, forming a second insulating layer on the substrate, forming a first contact hole that exposes at least portions of the data line and the active region, and forming a connection electrode that connects at least portions of the exposed data line and the active region.
    Type: Application
    Filed: June 4, 2004
    Publication date: December 30, 2004
    Applicant: LG. Philips LCD Co., Ltd.
    Inventors: Byeong Koo Kim, Yong Min Ha, Hun Jeoung
  • Publication number: 20040108987
    Abstract: A system for reducing an OFF-current in a thin film transistor of a liquid crystal display device includes gate and data lines crossing each other, a pixel thin film transistor including gate, source and drain electrodes, the gate electrode connected to the gate line and the source electrode connected to the data line, a liquid crystal capacitor connected to the drain electrode of the pixel thin film transistor, a first switch thin film transistor connected to a first end of the data line, a second switch thin film transistor connected to a first end of the gate line, a first voltage source electrically connected to the drain electrode of the pixel thin film transistor, a second voltage source connected to a source electrode of the first switch thin film transistor, a third voltage source connected to gate electrodes of the first and second switch thin film transistors, and a fourth voltage source connected to a source electrode of the second switch thin film transistor.
    Type: Application
    Filed: December 4, 2003
    Publication date: June 10, 2004
    Applicant: LG.Philips LCD Co., Ltd.
    Inventors: Jae-Deok Park, Byeong-Koo Kim, Kee-Jong Kim
  • Publication number: 20040061674
    Abstract: An apparatus for applying an OFF-state stress to a P-MOS device of one of an array substrate for an LCD device and an LCD panel having attached substrates includes: a power supply unit supplies a source power; a panel loading unit including a plurality of panel jigs on which one of the array substrate and the LCD panel is loaded; a voltage control unit including a plurality of voltage control channels and modulating a voltage of the source power; a frequency control unit including a plurality of frequency control channels and modulating a frequency of the source power; a time setting unit determining a time period of supplying the source power; and a panel selecting unit including a plurality of panel selecting channels and modulating an application of the source power.
    Type: Application
    Filed: June 26, 2003
    Publication date: April 1, 2004
    Inventors: Byeong-Koo Kim, Hun Jeoung
  • Publication number: 20040032544
    Abstract: The present invention relates to a static electricity prevention type liquid crystal display panel for preventing static electricity flowing in through a pad part. A static electricity prevention type liquid crystal display panel according to an embodiment of the present invention includes a picture display part having a plurality of liquid crystal cells; a signal pad part applying a drive signal to be inputted to signal lines of the picture display part, and wherein the signal pad part includes a plurality of pads connected to the signal lines; and a static electricity prevention circuit having a thin film transistor with a floating gate for connecting the pad with a shorting bar by a static electricity flowing into the pad for the pad to form an equipotential with respect to the static electricity.
    Type: Application
    Filed: June 23, 2003
    Publication date: February 19, 2004
    Inventors: Byeong Koo Kim, Yong Min Ha, Han Wook Hwang
  • Publication number: 20030128180
    Abstract: A shift register employs only a thin film transistor of the same type channel and has a level shifter built-in. A shift register with a built in level shifter includes a plurality of stages and a plurality of level shifters. The stages are connected in cascade to shift a start pulse inputted through an input terminal and sequentially output the shifted pulse. The level shifters level-shift a voltage level of the shifted pulse applied from each of the stages and outputting it.
    Type: Application
    Filed: December 10, 2002
    Publication date: July 10, 2003
    Inventors: Byeong Koo Kim, Jae Deok Park, Yong Min Ha
  • Patent number: 6483889
    Abstract: A shift register circuit is provided that is adaptive for reducing a swing width of a clock voltage. In the shift register, a plurality of stages, one for each scanning line, generate first driving signals in response to first and second clock signals. A level shifter is connected between each the stages and its respective scanning line to receive the first driving signal, to thereby apply a second driving signal having a larger swing width than the first driving signal to the scanning line.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: November 19, 2002
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Byeong Koo Kim, Soon Kwang Hong, Ju Cheon Yeo
  • Patent number: 6396558
    Abstract: A connecting part of an outer circuit in a liquid crystal display panel includes a substrate and a plurality of pads on the substrate, where the pads are to be connected to the outer circuit. A first connecting wire is connected to one of said pads, the wire being arranged in a first direction. A second connecting wire is connected to another one of said pads, the second connecting wire being arranged in a second direction. The first and second connecting wires are formed to minimize overlapped areas over the pads at crossing points between the first and second connecting wires and the pads. The first connecting wire is bent toward the second direction at a point and connected to the driving circuit.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: May 28, 2002
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Byeong-Koo Kim, Yong-Min Ha
  • Publication number: 20020044625
    Abstract: A shift register circuit is provided that is adaptive for reducing a swing width of a clock voltage. In the shift register, a plurality of stages, one for each scanning line, generate first driving signals in response to first and second clock signals. A level shifter is connected between each the stages and its respective scanning line to receive the first driving signal, to thereby apply a second driving signal having a larger swing width than the first driving signal to the scanning line.
    Type: Application
    Filed: June 29, 2001
    Publication date: April 18, 2002
    Inventors: Byeong Koo Kim, Soon Kwang Hong, Ju Cheon Yeo
  • Publication number: 20020008826
    Abstract: An in-plane switching mode liquid crystal display device comprises first and second substrates, a plurality of gate and data bus lines defining pixel regions and arranged on the first substrate, a plurality of data electrodes on same plane of the data bus lines these some parts are overlapped with adjacent gate bus line, a passivation layer on the data electrodes, a plurality of common electrodes on the passivation layer these some parts are overlapped with adjacent data electrodes, and a liquid crystal layer between the first and second substrates.
    Type: Application
    Filed: February 13, 2001
    Publication date: January 24, 2002
    Inventors: Byeong-Koo Kim, Yong-Min Ha
  • Patent number: 6281959
    Abstract: A connecting part of an outer circuit in a liquid crystal display panel includes a substrate and a plurality of pads on the substrate, where the pads are to be connected to the outer circuit. A first connecting wire is connected to one of said pads, the wire being arranged in a first direction. A second connecting wire is connected to another one of said pads, the second connecting wire being arranged in a second direction. The first and second connecting wires are formed to minimize overlapped areas over the pads at crossing points between the first and second connecting wires and the pads. The first connecting wire is bent toward the second direction at a point and connected to the driving circuit.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: August 28, 2001
    Assignee: LG Electronics Inc.
    Inventors: Byeong-Koo Kim, Yong-Min Ha