Patents by Inventor Joo-Yul Lee

Joo-Yul Lee 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: 20030098823
    Abstract: There is provided an address-while-display driving method for a surface discharge type triode plasma display panel, which includes sequentially performing resetting and addressing on each XY-electrode line pair while alternately and consecutively applying display voltages to all XY-electrode line pairs of the panel. The panel includes a front substrate and a rear substrate that are separately formed to face each other, X- and Y-electrode lines that are alternately arranged in parallel between the front and rear substrates to form the XY-electrode line pairs, and address electrode lines that are formed in perpendicular to the X- and Y-electrode lines. The address-while-display driving method includes lowering the display voltages during an addressing time for each XY-electrode line pair.
    Type: Application
    Filed: November 18, 2002
    Publication date: May 29, 2003
    Inventors: Joo-yul Lee, Kyoung-ho Kang
  • Publication number: 20030057858
    Abstract: A resetting method includes a line discharge step, an erasure step, and an iteration step. The line discharge step is performed during a part of a first pulse width period. During the first pulse width period since a second subfield corresponding to a first XY-electrode line pair starts after a first subfield corresponding to the first XY-electrode line pair ends, a negative voltage of a first level is applied to all X-electrode lines, and simultaneously, a positive voltage of the first level is applied to all Y-electrode lines. In the line discharge step, a negative voltage of a second level higher than the first level is applied to an X-electrode line of the first XY-electrode line pair, and simultaneously, a positive voltage of a third level higher than the first level is applied to a Y-electrode line of the first XY-electrode line pair, thereby provoking discharges in all discharge cells corresponding to the first XY-electrode line pair.
    Type: Application
    Filed: August 22, 2002
    Publication date: March 27, 2003
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Joo-Yul Lee, Kyoung-Ho Kang, Hee-Hwan Kim
  • Publication number: 20030025459
    Abstract: A plasma display panel sustain-discharge circuit. First and second signal lines for supplying first and second voltages and at least one inductor coupled between one end of the panel capacitor and a third voltage are formed. Energy is stored in the inductor through a path formed between the third voltage and the first signal line in a state where a voltage of one end of the panel capacitor is substantially fixed to the first voltage. The voltage of one end of the panel capacitor substantially decreases to the second voltage using resonance current generated between the inductor and the panel capacitor and the stored energy. Energy is stored in the inductor through a path formed between the third voltage and the second line in a state where a voltage of one end of the panel capacitor is substantially fixed to the second voltage.
    Type: Application
    Filed: July 31, 2002
    Publication date: February 6, 2003
    Inventors: Joo-Yul Lee, Kyoung-Ho Kang, Hee-Hwan Kim
  • Patent number: 6472826
    Abstract: A method of driving a plasma display panel, where the plasma display panel has opposing front and rear substrates which are spaced facing each other, X and Y electrode lines which are formed in parallel between the front and rear substrates, and address electrode lines formed to be perpendicular to the X and Y electrode lines so that discharge cells are defined by the crossing X and Y electrode lines and the address electrode lines. The method includes periodically applying display pulses to all the X and Y electrode lines, initializing the discharge conditions of a previous sub-field, and forming wall charges at discharge cells to be displayed in a current sub-field are sequentially performed while the display pulses are not applied. A bias pulse having the same polarity as and a lower voltage than the display pulses is applied to all the address electrode lines while the display pulses are applied.
    Type: Grant
    Filed: May 4, 2001
    Date of Patent: October 29, 2002
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyoung-ho Kang, Seong-charn Lee, Joo-yul Lee
  • Publication number: 20020044107
    Abstract: A method of driving a plasma display panel including erasing wall charges formed in a previous sub-field, applying X and Y scan pulses of first and second polarities to the X and Y electrode lines of a first pair of the X and Y groups that includes a first pair of the X and Y electrode lines, and an X scan pulse of a second polarity to form wall charges of the second polarity around the Y electrode lines, applying a display data signal corresponding to the first pair of the X and Y electrode lines to address electrode lines while applying a bias voltage of the first and second polarities to the X and Y electrode lines to erase the wall charges formed at discharge cells which are not to be displayed, and repeatedly applying sustain pulses to the X and Y electrode lines.
    Type: Application
    Filed: September 24, 2001
    Publication date: April 18, 2002
    Applicant: SAMSUNG SDI Co., Ltd.
    Inventor: Joo-yul Lee
  • Publication number: 20020043940
    Abstract: A method of driving a plasma display panel, where the plasma display panel has opposing front and rear substrates which are spaced facing each other, X and Y electrode lines which are formed in parallel between the front and rear substrates, and address electrode lines formed to be perpendicular to the X and Y electrode lines so that discharge cells are defined by the crossing X and Y electrode lines and the address electrode lines. The method includes periodically applying display pulses to all the X and Y electrode lines, initializing the discharge conditions of a previous sub-field, and forming wall charges at discharge cells to be displayed in a current sub-field are sequentially performed while the display pulses are not applied. A bias pulse having the same polarity as and a lower voltage than the display pulses is applied to all the address electrode lines while the display pulses are applied.
    Type: Application
    Filed: May 4, 2001
    Publication date: April 18, 2002
    Inventors: Kyoung-Ho Kang, Seong-Charn Lee, Joo-Yul Lee
  • Publication number: 20020033781
    Abstract: A method of driving a plasma display panel having front and rear substrates disposed opposite each other, parallel X and Y electrode lines formed between the front and rear substrates, and address electrode lines formed orthogonal to the X and Y electrode lines to define corresponding discharge cells at interconnections, the X electrode lines are in X groups, and the Y electrode lines are in Y groups, where no two adjacent pairs of adjacent X and Y electrode lines belong to the same pair of X and Y groups. The X and Y electrode lines of the respective X and Y groups are commonly connected to be driven, and at least first and second subfields are driven in an overlapping manner for displaying gray scales during a unit display period. The method includes a scan step, an address step, a display step, a second driving step, and a repetition step.
    Type: Application
    Filed: August 7, 2001
    Publication date: March 21, 2002
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Kyoung-ho Kang, Shigeo Mikoshlba, Tomokazu Shiga, Kiyoshi Igarashi, Makoto Ishii, Nam-sung Jung, Hee-hwan Kim, Seong-charn Lee, Joo-yul Lee
  • Publication number: 20010024180
    Abstract: A method of driving a plasma display panel having front and rear substrates opposed to and facing each other, X and Y electrode lines formed between the front and rear substrates to be parallel to each other, address electrode lines formed to be orthogonal to the X and Y electrode lines, to define corresponding pixels at interconnections, and the address electrode lines are cut into two parts at the middle portions thereof to then form first and second panels separately driven such that the minimum driving period includes a display discharge period, a reset period and an address period, a scan pulse is applied to at least one of the respective Y electrode lines during the address period and the corresponding display data signals are simultaneously applied to the respective address electrode lines to form wall charges at pixels to be displayed, pulses for a display discharge are alternately applied to the X and Y electrode lines to cause a display discharge at the pixels where the wall charges have been formed
    Type: Application
    Filed: December 4, 2000
    Publication date: September 27, 2001
    Inventors: Joo-yul Lee, Jeong-duk Ryeom, Kyoung-ho Kang