Patents by Inventor Yun-Kwon Jung

Yun-Kwon Jung 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: 8305299
    Abstract: There is provided a plasma display device using a driving device for supplying driving signals to a plasma display panel (PDP). In a sustain falling period that at least partially overlaps the rising period of reset signals supplied to scan electrodes formed on the PDP, a voltage supplied to sustain electrodes is gradually reduced and a positive polar voltage is supplied to address electrodes. In driving the PDP, gradually falling signals are supplied to the sustain electrodes in the rising period of the reset signals so that the driving margin of the PDP can be secured. The positive polar voltage is supplied to the address electrodes so that initialization discharge can be stably performed and that the erroneous discharge of the plasma display device can be reduced.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: November 6, 2012
    Assignee: LG Electronics Inc.
    Inventors: Sung Kwang Cho, Yun Kwon Jung, Kyung Ryeol Shim, Yang Ki An
  • Patent number: 8125411
    Abstract: A plasma display apparatus and a driving method thereof are disclosed. The plasma display apparatus includes a plasma display panel comprising a first electrode and a second electrode, and a driver for applying a plurality of sustain signals to the second electrode while applying two consecutive sustain signals to the first electrode in a sustain period. A method of driving a plasma display apparatus includes applying a first sustain signal to a first electrode in a sustain period, after applying the first sustain signal to the first electrode, applying a plurality of sustain signals to a second electrode, and after applying the plurality of sustain signals to the second electrode, applying a second sustain signal consecutive to the first sustain signal to the first electrode.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: February 28, 2012
    Assignee: LG Electronics Inc.
    Inventors: Hyun Jae Lim, Muk Hee Kim, Yong Hyun Huh, Yun Kwon Jung
  • Patent number: 8044884
    Abstract: A plasma display apparatus comprises a driver for supplying a rising signal of finite slope and a scan signal of negative polarity to a scan electrode using one voltage source. The driver also supplies a falling signal to the scan electrode using the same voltage source. This apparatus may be used to perform a panel driving method that includes applying a rising signal, which rises from a first voltage to a second voltage, to the scan electrode during a reset period and applying a scan signal, of a magnitude at least substantially the same as a difference between the first voltage and the second voltage, to the scan electrode during an address period.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: October 25, 2011
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Hyun Jae Lim, Sung Kwang Cho
  • Patent number: 8026867
    Abstract: The present invention relates to a plasma display device and a method of driving the plasma display device. A gradually rising waveform and then a falling waveform are applied to the scan electrodes. A rising waveform has a slope different from that of a rising waveform applied in a first sub-field in at least one of sub-fields posterior to the first sub-field.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: September 27, 2011
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Jong Sik Lim
  • Patent number: 7999767
    Abstract: There is disclosed a method and apparatus of driving a plasma display panel that is adaptive for improving its contrast and enabling its high speed driving. A driving method of a plasma display panel according to an embodiment of the present invention applies a setup voltage with a first gradient to the scan electrode for the reset period; and applies the setup voltage with a second gradient to the sustain electrode while a voltage on the scan electrode rises.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: August 16, 2011
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Jin Young Kim
  • Patent number: 7990340
    Abstract: The present invention relates to a plasma display apparatus including a sustain driving apparatus that supplies a sustain signal to a panel. The plasma display apparatus includes a panel in which a front substrate having formed first and second electrodes therein and a rear substrate are coalesced, a sustain driver including a first switch for applying a first voltage to any one of the first and second electrodes and a second switch for applying a second voltage, and a circuit protection unit that controls one of the first and second switches, which has a voltage higher than a predetermined voltage, at its both ends, not to turn on. According to the present invention, when a voltage at both ends of the switch included in the sustain driving apparatus in order to supply the sustain signal is higher than a reference voltage, the switch is controlled not to turn on.
    Type: Grant
    Filed: November 8, 2006
    Date of Patent: August 2, 2011
    Assignee: LG Electronics Inc.
    Inventors: Hyun Il Park, Chang Young Kwon, Yun Kwon Jung, Jong Sik Lim, Kyu Choon Cho, Yang Ki An
  • Patent number: 7969386
    Abstract: A plasma display apparatus and a method of driving the plasma display apparatus are provided. The plasma display apparatus includes a plasma display panel including a first electrode and a second electrode, a first electrode driver, and a second electrode driver. The first electrode driver supplies a first falling signal of a voltage magnitude, that is more than a voltage magnitude of a scan signal supplied during an address period, to the first electrode before the supply of a rising signal with a gradually rising voltage in at least one subfield of several subfields of a frame. The second electrode driver supplies a second signal having a polarity opposite a polarity of the first falling signal to the second electrode during the supply of the first falling signal.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: June 28, 2011
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Muk Hee Kim, Byung Hyun Kim, Yong Hyun Huh
  • Patent number: 7911421
    Abstract: A plasma display apparatus and a method of driving the plasma display apparatus are provided. According to an embodiment, the plasma display apparatus is driven by dividing a sub-field into at least an address period and a sustain period. The apparatus includes a timing controlling unit to vary a length of the sustain period according to a data pattern associated with at least one address electrode.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: March 22, 2011
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Seung Woo Woo
  • Patent number: 7868849
    Abstract: In the method of driving a plasma display panel according to the present invention, the address electrodes are divided into a plurality of electrode groups, and the an application time point of data pulses applied to one or more of the address electrode groups in the address period is different from that of a scan pulse applied to the scan electrode in all the sub-fields of the frame. In addition, the width of the scan pulse applied during an address period of a predetermined number of the sub-fields is greater than the width of scan pulses applied during the address period of the remaining sub-fields.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: January 11, 2011
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Hee Chan Yang, Jin Young Kim
  • Patent number: 7852292
    Abstract: The present invention relates to a plasma display apparatus. The plasma display apparatus according to the present invention comprises a plasma display panel comprising a scan electrode, a set-up driver that applies a rising pulse to the scan electrode during a reset period, a set-down driver that applies a first ramp-down pulse before the rising pulse is applied to the scan electrode and applies a second ramp-down pulse after the rising pulse is applied to the scan electrode, and a scan pulse driver that applies a scan pulse having an amount, which is substantially the same as that of the rising pulse, to the scan electrode during an address period subsequent to the reset period.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: December 14, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Moonshick Chung
  • Patent number: 7821477
    Abstract: The present invention relates to a plasma display apparatus and a driving method thereof in which an erroneous discharge, a misdischarge and an abnormal discharge are prevented, a darkroom contrast is increased, an operation margin is widen, and an influence of a lower substrate wall charge is reduced in a sustain discharge. The plasma display apparatus and its driving method is characterized in that when the plasma display panel has a second temperature higher than a first temperature, a period between the last sustain pulse generated during a sustain period of (n?1)th sub-field (ā€œnā€ is a positive integer) and an initialization signal generated during a reset period of nth sub-field is more lengthened than when it has the first temperature. The plasma display apparatus and its driving method is characterized in that a pre sustain pulse (PRESUSP) rising from a sustain bias voltage (Vzb) is applied to the second electrode in the sustain period.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: October 26, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Gi Bum Lee, Muk Hee Kim
  • Patent number: 7768481
    Abstract: A plasma display apparatus is disclosed. A scan driver of the plasma display apparatus supplies a voltage of a scan signal of a negative polarity direction and a voltage of a sustain signal to a scan electrode using one voltage source. Further, a sustain driver of the plasma display apparatus supplies a voltage of a sustain signal and a sustain bias voltage to a sustain electrode using one voltage source.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: August 3, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Yang Ki An
  • Patent number: 7768477
    Abstract: In a plasma display apparatus and a method of driving the same which is driven by a driving signal having a reset period, an address period and a sustain period, a sustain pulse is applied during the sustain period, the sustain pulse including: an interval in which the sustain pulse rises from a ground voltage to a first voltage; an interval in which the first voltage is substantially constant for predetermined period of time; an interval in which the sustain pulse rises from the first voltage to a second voltage; and an interval in which the second voltage is substantially constant for a predetermined period of time. At least two discharges can be generated per a single sustain pulse by applying a sustain pulse rising and falling in two stages during one sustain period, and discharge efficiency and luminance can be improved by lengthening a light emission time by maintaining the light generated by a discharge for a predetermined time.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: August 3, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Gun Su Kim
  • Publication number: 20100128013
    Abstract: A plasma display device is provided. The plasma display device can reduce the capacity of a pass switch necessary for various driving circuits for applying various driving signals to a plasma display panel (PDP) and can thus contribute to the reduction of the manufacturing cost. In addition, the plasma display device can reduce the amount of heat generated by the various driving circuits and can thus contribute to the improvement of the reliability and the reduction of the power consumption.
    Type: Application
    Filed: July 29, 2009
    Publication date: May 27, 2010
    Applicant: LG ELECTRONICS INC.
    Inventors: Sang Yoon SOH, Ju Won SEO, Hyun Oh LEE, Yun Kwon JUNG
  • Patent number: 7710352
    Abstract: A plasma display panel comprising an energy recovery circuit and a driving method thereof are provided. The plasma display panel comprises an energy charging part for supplying a predetermined voltage, an energy supply and recovery part for receiving an energy of the predetermined voltage from the energy charging part, and a pulse forming part. The pulse forming part supplies the energy of the predetermined voltage supplied from the energy supply and recovery part to the plasma display panel, maintains a sustain voltage of the plasma display panel, and recovers the energy of the predetermined voltage to the energy supply and recovery part.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: May 4, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Soong Kyu Lee
  • Patent number: 7705805
    Abstract: The present invention provides a plasma display apparatus comprising a second driver supplying a first bias signal with a voltage maintained at a first bias voltage in a reset period and an address period, a first sustain rising signal that gradually rises from the first bias voltage to a second bias voltage, and a second bias signal with a voltage maintained at the second bias voltage, to the second electrode.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: April 27, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Sang Jun Lee, Jang Hyun Lim, Yang Ki An
  • Patent number: 7692608
    Abstract: An energy recovery circuit is provided that includes: a panel capacitor formed equivalently in a scan electrode and a sustain electrode, a scan electrode driver installed at a side of the scan electrode of the panel capacitor to supply a sustaining pulse to the side of the scan electrode, and a sustain electrode driver installed at a side of the sustain electrode of the panel capacitor to supply the sustaining pulse to the side of the sustain electrode. The energy recovery circuit may further include a first diode coupled to the scan electrode side of the panel capacitor, a second diode coupled to the sustain electrode side of the panel capacitor, a first inductor commonly coupled to the sustain electrode side and the scan electrode side of the panel capacitor, a path providing part coupled to the first inductor, and a single source capacitor connected to the path providing part.
    Type: Grant
    Filed: November 17, 2005
    Date of Patent: April 6, 2010
    Assignee: LG Electronics Inc.
    Inventors: Yun Kwon Jung, Bong Koo Kang, Ju Won Seo, Sang Yoon Soh
  • Patent number: 7642994
    Abstract: A plasma display panel employs a voltage circuit having an input and an output, the voltage circuit configured for supplying a negative voltage for an electrode. The plasma display panel also employs a power supply that has a positive terminal and a negative terminal, where the negative terminal is connected to the input of the voltage circuit. The power supply is otherwise configured relative to the voltage circuit such that the voltage difference between the output and the input of the voltage circuit is fixed as a function of the power supply. By fixing this voltage difference, parasitic capacitance is minimized, power consumption and calorific value are reduced, and the plasma display panel operates in a more stable manner.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: January 5, 2010
    Assignee: LG Electronics Inc.
    Inventors: Jang Hwan Cho, Yun Kwon Jung, Ju Won Seo
  • Patent number: 7561120
    Abstract: A method and apparatus drives a plasma display panel in which a margin of an address discharge and a sustain discharge is increased through a stabilized reset operation. According to an embodiment, the method of driving the PDP includes the steps of applying a first ramp-down pulse having a first tilt to scan electrodes in the first half of a set-down period included in a reset period, applying a ground voltage to the scan electrodes in the middle phase of the set-down period, and applying a second ramp-down pulse having a second tilt to the scan electrodes in the second half of the set-down period.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: July 14, 2009
    Assignee: LG Electronic s Inc.
    Inventors: Hyun Oh Lee, Yun Kwon Jung
  • Publication number: 20090128537
    Abstract: There is provided a plasma display device using a driving device for supplying driving signals to a plasma display panel (PDP). In a sustain falling period that at least partially overlaps the rising period of reset signals supplied to scan electrodes formed on the PDP, a voltage supplied to sustain electrodes is gradually reduced and a positive polar voltage is supplied to address electrodes. In driving the PDP, gradually falling signals are supplied to the sustain electrodes in the rising period of the reset signals so that the driving margin of the PDP can be secured. The positive polar voltage is supplied to the address electrodes so that initialization discharge can be stably performed and that the erroneous discharge of the plasma display device can be reduced.
    Type: Application
    Filed: November 5, 2008
    Publication date: May 21, 2009
    Applicant: LG Electronics Inc.
    Inventors: Sung Kwang CHO, Yun Kwon JUNG, Kyung Ryeol SHIM, Yang Ki AN