Patents by Inventor Seong-charn Lee
Seong-charn 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).
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Patent number: 7242374Abstract: In a PDP driving method, an image of each field displayed on the PDP corresponding to an input video signal is divided into sub-fields with different weights, and a combination of the weights is used for gradation. The method includes: determining an automatic power control (APC) level for driving the PDP; determining a pulse width comprising any one of an address pulse width, a sustain pulse width, and a reset pulse width, or a combination of at least two of the three pulse widths for each sub-field using the APC level, the determined pulse width including as an increment a part of a pause period occurring in driving the PDP at the APC level; and performing addressing on the PDP according to the pulse width.Type: GrantFiled: June 12, 2003Date of Patent: July 10, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Jae-Seok Jeong, Seong-Charn Lee
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Patent number: 7167145Abstract: In a method of resetting a plasma display panel including a front substrate and a rear substrate separated from each other and facing each other, in which a first electrode line and second display electrode line are formed parallel to each other on the front substrate and address electrode lines are formed perpendicular to the first electrode line and the second display electrode lines, a voltage applied to the first display electrode lines is gradually increased up to a first voltage. Then, a voltage applied to the second display electrode lines is gradually increased up to a second voltage higher than the first voltage while the voltage applied to the first display electrode lines is gradually increased up to a third voltage lower than the first voltage. The voltage applied to the first display electrode lines is maintained at the first voltage while the voltage applied to the second display electrode lines is gradually decreased down to a fourth voltage lower than the third voltage.Type: GrantFiled: January 12, 2005Date of Patent: January 23, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Joon-koo Kim, Hak-ki Choi, Seong-charn Lee, Nam-sung Jung
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Publication number: 20050116901Abstract: In a method of resetting a plasma display panel including a front substrate and a rear substrate separated from each other and facing each other, in which a first electrode line and second display electrode line are formed parallel to each other on the front substrate and address electrode lines are formed perpendicular to the first electrode line and the second display electrode lines, a voltage applied to the first display electrode lines is gradually increased up to a first voltage. Then, a voltage applied to the second display electrode lines is gradually increased up to a second voltage higher than the first voltage while the voltage applied to the first display electrode lines is gradually increased up to a third voltage lower than the first voltage. The voltage applied to the first display electrode lines is maintained at the first voltage while the voltage applied to the second display electrode lines is gradually decreased down to a fourth voltage lower than the third voltage.Type: ApplicationFiled: January 12, 2005Publication date: June 2, 2005Inventors: Joon-koo Kim, Hak-ki Choi, Seong-charn Lee, Nam-sung Jung
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Patent number: 6867754Abstract: In a method of resetting a plasma display panel inclu/ding a front substrate and a rear substrate separated from each other and facing each other, in which a first electrode line and second display electrode line are formed parallel to each other on the front substrate and address electrode lines are formed perpendicular to the first electrode line and the second display electrode lines, a voltage applied to the first display electrode lines is gradually increased up to a first voltage. Then, a voltage applied to the second display electrode lines is gradually increased up to a second voltage higher than the first voltage while the voltage applied to the first display electrode lines is gradually increased up to a third voltage lower than the first voltage. The voltage applied to the first display electrode lines is maintained at the first voltage while the voltage applied to the second display electrode lines is gradually decreased down to a fourth voltage lower than the third voltage.Type: GrantFiled: May 31, 2002Date of Patent: March 15, 2005Assignee: Samsung SDI Co., Ltd.Inventors: Joon-koo Kim, Hak-ki Choi, Seong-charn Lee, Nam-sung Jung
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Patent number: 6693607Abstract: A method for driving a plasma display panel having front and rear substrates opposed to and facing each other, X and Y electrode lines between the front and rear substrates and parallel to each other and address electrode lines orthogonal to the X and Y electrode lines, to define corresponding pixels at intersections. In the driving method, a scan pulse is applied to the respective Y electrode lines with a time difference and the corresponding display data signals are simultaneously applied to the respective address electrode lines to form wall charges at pixels where a display discharge is to occur. 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: GrantFiled: October 20, 2000Date of Patent: February 17, 2004Assignee: Samsung SDI Co., Ltd.Inventors: Seong-charn Lee, Jeong-duk Ryeom, Kyoung-ho Kang
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Patent number: 6677921Abstract: 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: GrantFiled: August 7, 2001Date of Patent: January 13, 2004Assignee: Samsung SDI Co., Ltd.Inventors: Kyoung-ho Kang, Shigeo Mikoshiba, Tomokazu Shiga, Kiyoshi Igarashi, Makoto Ishii, Nam-sung Jung, Hee-hwan Kim, Seong-charn Lee, Joo-yul Lee
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Publication number: 20030231147Abstract: In a PDP driving method, an image of each field displayed on the PDP corresponding to an input video signal is divided into sub-fields with different weights, and a combination of the weights is used for gradation. The method includes: determining an automatic power control (APC) level for driving the PDP; determining a pulse width comprising any one of an address pulse width, a sustain pulse width, and a reset pulse width, or a combination of at least two of the three pulse widths for each sub-field using the APC level, the determined pulse width including as an increment a part of a pause period occurring in driving the PDP at the APC level; and performing addressing on the PDP according to the pulse width.Type: ApplicationFiled: June 12, 2003Publication date: December 18, 2003Applicant: Samsung SDI Co., Ltd.Inventors: Jae-Seok Jeong, Seong-Charn Lee
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Patent number: 6603449Abstract: A method for driving a plasma display panel having front and rear substrates opposed to and facing each other, X and Y electrode lines between the front and rear substrates parallel to each other, and address electrode lines orthogonal to the X and Y electrode lines, to define corresponding pixels at intersections, the method including applying scan pulses to respective groups of Y electrode lines with a time difference and simultaneously applying corresponding display data signals to respective address electrode lines to form wall charges at pixels where a display discharge is to occur, and alternately applying pulses for a display discharge to the X and Y electrode lines to cause a display discharge at the pixels where wall charges have been formed, wherein, as a time difference between (i) a first pulse of the pulses for display discharges, and (ii) pulses of the display data signals applied to pixels for a display discharge before application of the first pulse becomes larger, widths of the pulses of theType: GrantFiled: October 20, 2000Date of Patent: August 5, 2003Assignee: Samsung SDI Co., Ltd.Inventors: Kyoung-ho Kang, Jeong-duk Ryeom, Seong-charn Lee
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Patent number: 6559815Abstract: There are provided a plasma display panel (PDP) with improved energy recovery efficiency by which EMI generated at the PDP can be offset by an electrical field generated during a sustained discharge, the number of terminals connected to common electrodes can be reduced by minimizing the current flowing through the common electrodes without applying a voltage to the common electrodes during the sustained discharge, and the PDP can be tiled by minimizing the non-luminous area of the PDP, and a driving method thereof.Type: GrantFiled: June 28, 2000Date of Patent: May 6, 2003Assignee: Samsung SDI Co., Ltd.Inventors: Kyoung-Ho Kang, Jeong-Duk Ryeom, Seong-charn Lee
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Patent number: 6559817Abstract: A method for driving a plasma display panel having front and rear substrates opposed to and facing each other, X and Y electrode lines between the front and rear substrates, parallel to each other, and address electrode lines orthogonal to the X and Y electrode lines, defining corresponding pixels at intersections. A scan pulse is sequentially applied to the respective Y electrode lines at a predetermined time difference and the corresponding display data signals are simultaneously applied to the respective address electrode lines to produce wall charges at pixels where a discharge display discharge is to take place and 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 produced.Type: GrantFiled: October 4, 2000Date of Patent: May 6, 2003Assignee: Samsung SDI Co., Ltd.Inventors: Seong-charn Lee, Jeong-duk Ryeom, Kyoung-ho Kang
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Publication number: 20020180669Abstract: In a method of resetting a plasma display panel inclu/ding a front substrate and a rear substrate separated from each other and facing each other, in which a first electrode line and second display electrode line are formed parallel to each other on the front substrate and address electrode lines are formed perpendicular to the first electrode line and the second display electrode lines, a voltage applied to the first display electrode lines is gradually increased up to a first voltage. Then, a voltage applied to the second display electrode lines is gradually increased up to a second voltage higher than the first voltage while the voltage applied to the first display electrode lines is gradually increased up to a third voltage lower than the first voltage. The voltage applied to the first display electrode lines is maintained at the first voltage while the voltage applied to the second display electrode lines is gradually decreased down to a fourth voltage lower than the third voltage.Type: ApplicationFiled: May 31, 2002Publication date: December 5, 2002Inventors: Joon-Koo Kim, Hak-Ki Choi, Seong-Charn Lee, Nam-Sung Jung
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Patent number: 6472826Abstract: 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: GrantFiled: May 4, 2001Date of Patent: October 29, 2002Assignee: Samsung SDI Co., Ltd.Inventors: Kyoung-ho Kang, Seong-charn Lee, Joo-yul Lee
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Publication number: 20020043940Abstract: 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: ApplicationFiled: May 4, 2001Publication date: April 18, 2002Inventors: Kyoung-Ho Kang, Seong-Charn Lee, Joo-Yul Lee
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Publication number: 20020033781Abstract: 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: ApplicationFiled: August 7, 2001Publication date: March 21, 2002Applicant: 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
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Patent number: 6326736Abstract: A method for driving a plasma display panel having front and rear substrates opposed to and facing each other, X and Y electrode lines between the front and rear substrates parallel to each other and address electrode lines orthogonal to the X and Y electrode lines, to define corresponding pixels at intersections. A scan pulse is applied to the respective Y electrode lines with a predetermined time difference and the corresponding display data signals are simultaneously applied to the respective address electrode lines to form wall charges at pixels for a display discharge and pluses 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: GrantFiled: October 11, 2000Date of Patent: December 4, 2001Assignee: Samsung SDI Co., Ltd.Inventors: Kyoung-ho Kang, Jeong-duk Ryeom, Seong-charn Lee
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Publication number: 20010011973Abstract: 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 display cells (pixels) at interconnections. If the average brightness of an image displayed on the plasma display panel is maintained at a predetermined level or below for a predetermined time, a display discharge is performed at all the display cells at least one time.Type: ApplicationFiled: December 4, 2000Publication date: August 9, 2001Inventors: Kyoung-ho Kang, Jeong-duk Ryeom, Seong-charn Lee