More Than Two Electrodes Per Element Patents (Class 345/67)
  • Patent number: 8040296
    Abstract: In one embodiment, a plasma display device includes: a plasma display panel having a plurality of electrodes; a power supply including first and second power sources for respectively supplying first and second voltages, the second voltage being higher than the first voltage; a driving circuit for driving the electrodes; and a controller for generating a first signal to control the driving circuit. The driving circuit includes: a first switch for supplying a third voltage to the electrodes, the third voltage decreasing over a period of time; a switching controller for controlling the first switch in accordance with the first signal and a second signal; and a feedback signal generator for comparing fourth and fifth voltages respectively proportional to the third and second voltages, adjusting a level of the second signal according to a result of comparing the fourth and fifth voltages, and supplying the second signal to the switching controller.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: October 18, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Sang-Gu Lee
  • Patent number: 8031138
    Abstract: A plasma display panel and a plasma display apparatus are disclosed. The plasma display panel includes a front substrate including a scan electrode and a sustain electrode positioned parallel to each other, an upper dielectric layer positioned on the scan and sustain electrodes, a rear substrate on which an address electrode is positioned to intersect the scan and sustain electrodes, a lower dielectric layer positioned on the address electrode, a barrier rib positioned between the front substrate and the rear substrate to partition a discharge cell, and a phosphor layer positioned inside the discharge cell. The upper dielectric layer includes a glass-based material and a blue pigment. The phosphor layer includes a phosphor material and MgO material.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 4, 2011
    Assignee: LG Electronics Inc.
    Inventors: Heekwon Kim, Woochan Cho, Yoonseok Kwak, Byunghyun Kim
  • Patent number: 8031139
    Abstract: In a plasma display device, a source of a first transistor S1 is coupled to an X electrode, and a drain thereof is coupled to a cathode of a diode D1. An anode of the diode D1 is coupled to a first power source for supplying a first voltage V1. A drain of the first transistor S1 is coupled to a drain of a second transistor S2 through a capacitor, and a source of the second transistor S2 is coupled to a ground source for supplying a second voltage of 0 V. A third transistor S3 has a source coupled to the drain of the second transistor S2 and a drain coupled to a third power source for supplying a third voltage V2, and a fourth transistor S4 has a drain coupled to the X electrode and a source coupled to the drain of the second transistor S2.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: October 4, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sang-Min Nam, Jung-Pil Park
  • Patent number: 8022897
    Abstract: Disclosed is a method for driving a plasma display panel in which a plurality of first electrodes and second electrodes are arranged parallel to each other, a plurality of third electrodes are arranged to cross the first and second electrodes, and discharge cells defined with areas in which the electrodes cross mutually are arranged in the form of a matrix. According to the driving method, a reset period is a period during which the distribution of wall charges in the plurality of discharge cells is uniformed. An addressing period is a period during which wall charges are produced in the discharge cells according to display data. A sustain discharge period is a period during which sustain discharge is induced in the discharge cells in which wall charges are produced during the addressing period.
    Type: Grant
    Filed: August 21, 2007
    Date of Patent: September 20, 2011
    Assignee: Hitachi Plasma Licensing Co., Ltd.
    Inventors: Noriaki Setoguchi, Shigeharu Asao, Yoshikazu Kanazawa
  • Patent number: 8009124
    Abstract: A plasma display and a driving method for the plasma display. The plasma display is constructed with a control type plasma display panel having a closed barrier rib configuration, and each pair of column-wise neighboring discharge cells have different electrode arrangement. In the driving method, when the control type plasma display panel has an alignment error for a first electrode and a second electrode, a scan pulse having a first width is applied to an odd-numbered first electrode, and the scan pulse having a second width that is different from the first width is applied to an even-numbered first electrode.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: August 30, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Tae-Hyun Kim
  • Patent number: 7999766
    Abstract: A driving method and a driver circuit for improving the definition of display image on a plasma display device. In an initial state in an addressing discharge period, a scanning electrode is applied with a scanning base pulse at a first power supply potential. This suppresses a weak erroneous discharge between a scanning base pulse and a display data pulse. Next, the scanning electrode is applied with a scanning pulse. After the scanning pulse has been applied, the scanning electrode is applied with the scanning base pulse at a second power supply potential. In this way, the level of the scanning base pulse applied to the scanning electrode after the end of the application of the scanning pulse in the addressing discharge period is lower than the level of the scanning base pulse applied to the scanning electrode before the application of the scanning pulse.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: August 16, 2011
    Assignee: Panasonic Corporation
    Inventors: Sohei Okamoto, Takatoshi Shoji, Hiroshi Shirasawa
  • Patent number: 7995006
    Abstract: One field is formed of a plurality of sub-fields, and each one of the sub-fields includes an initializing period, addressing period, and sustained period. The sub-field is one of an entire-cell initialization sub-field or a selective-cell initialization sub-field. When the entire initialization sub-field is switched to the selective one or vice versa, an initializing voltage which generates initializing discharge in the entire initialization sub-field is controlled. This control allows varying the number of the entire initializations and stabilizing address discharge in a plasma display panel, and at the same time, making the black luminance inconspicuous for improving the picture quality.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: August 9, 2011
    Assignee: Panasonic Corporation
    Inventors: Minoru Takeda, Shigeo Kigo, Yasuaki Mutou
  • Patent number: 7969081
    Abstract: A plasma display panel includes: pairs of electrodes having first electrode and second electrode which are arranged in parallel with each other; first substrate having dielectric layer formed so that the dielectric layer can cover the pairs of electrodes; and second substrate having third electrode which is arranged crossing the pairs of electrodes, and the plasma display panel further includes: floating electrodes, protruding onto a discharge space provided on dielectric layer at positions respectively corresponding to first electrode and second electrode, wherein floating electrodes are opposed to each other. Due to the above composition, the discharge starting voltage is reduced and the drive voltage is decreased. Accordingly, the light emitting efficiency is enhanced.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: June 28, 2011
    Assignee: Panasonic Corporation
    Inventors: Naoki Kosugi, Yukihiro Morita, Masanori Miura, Shinichiro Hashimoto, Yoshio Watanabe
  • 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: 7944409
    Abstract: A plasma display apparatus and a method of driving the same are disclosed. The plasma display apparatus includes a plasma display panel in which a plurality of scan electrodes, sustain electrodes, and address electrodes are formed on substrates to form a discharge cell and electrode driving parts for driving the scan electrodes, the sustain electrodes, and the address electrodes. The plurality of scan electrodes are divided into a plurality of scan electrode groups and the driving parts are controlled such that a voltage different from a scan bias voltage is applied for a predetermined time in the address period of one or more scan electrode groups among the plurality of scan electrode groups.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: May 17, 2011
    Assignee: LG Electronics Inc.
    Inventor: Jeong Pil Choi
  • Patent number: 7928975
    Abstract: In a plasma display and a driving method thereof, a misfiring prevention period is provided between a reset period and an address period in response to a temperature of the plasma display being higher than predetermined temperature or a weight value of a previous subfield being higher than a predetermined weight value. In the misfiring prevention period, a first voltage higher than a voltage supplied to a sustain electrode is supplied during a first period, and a voltage at a scan electrode is gradually decreased from a second voltage to a third voltage during a second period subsequent to the first period.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: April 19, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Suk-Jae Park, In-Ju Choi, Seung-Won Choi, Seung-Min Kim
  • Patent number: 7920106
    Abstract: Disclosed is a method of driving a plasma display panel and apparatus thereof enabling to minimize power consumption for driving the plasma display panel 1. The present invention includes the steps of generating a reset discharge by supplying ramp waves so as to equalize cells in the plasma display panel in a reset period, supplying selected specific ones of the cells with a scan voltage pulse swinging between a lowest voltage levels of the reset discharge and a data pulse of a voltage level lowered as much as a negative voltage level of the scan voltage pulse, generating an address discharge by the scan voltage pulse and data pulse applied to the selected cells in an address period, and maintaining the address discharge for a sustain period.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: April 5, 2011
    Assignee: LG Electronics Inc.
    Inventor: Geun Soo Lim
  • Patent number: 7920105
    Abstract: Disclosed is a method of driving a plasma display panel and apparatus thereof enabling to minimize power consumption for driving the plasma display panel 1. The present invention includes the steps of generating a reset discharge by supplying ramp waves so as to equalize cells in the plasma display panel in a reset period, supplying selected specific ones of the cells with a scan voltage pulse swinging between a lowest voltage levels of the reset discharge and a data pulse of a voltage level lowered as much as a negative voltage level of the scan voltage pulse, generating an address discharge by the scan voltage pulse and data pulse applied to the selected cells in an address period, and maintaining the address discharge for a sustain period.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: April 5, 2011
    Assignee: LG Electronics Inc.
    Inventor: Geun Soo Lim
  • Patent number: 7920104
    Abstract: Provided is a plasma display apparatus having a plasma display panel constituted of a plurality of discharge cells, and a driver for driving the panel. The apparatus includes a scan IC (integrated circuit) having a first switch turning on to apply a first signal to the panel, and a second switch turning on to apply a second signal to the panel, wherein, when the first signal applied to the panel changes into the second signal, the first and second switches are floated between an application period of the first signal and an application period of the second signal.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: April 5, 2011
    Assignee: LG Electronics Inc.
    Inventors: Won Jae Kim, Won Soon Kim, Sung Im Lee, Choon Sub Kim
  • Patent number: 7911418
    Abstract: A method and device for driving a plasma display panel are provided that do not cause false lighting even if the all-cell initializing operation becomes unstable. In an initializing period of a subfield, an all-cell initializing operation of causing initializing discharge in all discharge cells or a selective initializing operation of causing initializing discharge in the discharge cell that has caused sustain discharge in the last sustain period is performed. In a field corresponding to an image signal for displaying black on the whole screen, an abnormal charge erasing period for applying rectangular waveform voltage to the scan electrode is disposed after the initializing period in the subfield where the all-cell initializing operation is firstly performed.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: March 22, 2011
    Assignee: Panasonic Corporation
    Inventors: Yutaka Yoshihama, Shigeo Kigo
  • Patent number: 7911420
    Abstract: A plasma display apparatus comprises a plasma display panel and a scan driver. The plasma display panel comprising a first scan electrode, a second scan electrode, and a sustain electrode. The scan driver supplies the first scan electrode with a first scan signal, supplies the first scan electrode and the second electrode with a first signal for emitting light, and then supplies the second scan electrode with a second scan signal that falls down from a scan reference voltage, and supplies the first scan electrode with a voltage that is different from the scan reference voltage while the second scan signal is supplied.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: March 22, 2011
    Assignee: LG Electronics Inc.
    Inventor: Jeongpil Choi
  • Patent number: 7911419
    Abstract: In a conventional method of driving a plasma display panel, for example, an auxiliary discharge is executed between an A electrode and a Y electrode to improve light-emission efficiency of a display discharge. However, since a phosphor layer is present between the A electrode and the Y electrode, the phosphor layer is exposed to a discharge, whereby there is a problem that its characteristic deteriorates. A method of driving a plasma display panel having a structure, in which at least three display electrodes X, Y, and Z used for a display discharge are provided to a display cell and no phosphor layer is formed between said display electrodes and a discharge space, the method comprising the steps of: varying a potential of at least one display electrode Z of said display electrodes during said display discharge; and making a potential of said at least one display electrode Z at a time of starting said display discharge different from that at a time of ending said display discharge.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: March 22, 2011
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Yasunobu Hashimoto, Tomokatsu Kishi, Tetsuya Sakamoto, Naoki Itokawa, Takayuki Kobayashi, Yoshimi Kawanami, Osamu Toyoda, Yasuhiko Kunii, Takahiro Takamori, Kunio Takayama
  • Patent number: 7893891
    Abstract: An integrated circuit (IC) device for controlling a plurality of electrodes in a plasma display device, and a plasma display device including one or more IC devices, are provided. The IC device includes a plurality of output parts coupled to the plurality of electrodes, first and second terminals coupled to end portions of the IC device, and at least one third terminal between the first and second terminals and to supply a predetermined voltage to the IC device.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: February 22, 2011
    Assignee: LG Electronics Inc.
    Inventors: Jin Young Kim, Seung Woo Woo
  • Patent number: 7868853
    Abstract: A driving device for a plasma display panel. The driving device generates rising and falling ramp signals having a respective constant slope regardless of a change in operating temperature. An optimal discharge voltage is maintained at high and low temperatures by the rising and falling ramp signals having a respective constant slope to secure an operation margin, thereby preventing a discharge degradation such as an incorrect discharge from occurring. Accordingly, this can cause the reliability of a plasma display device including the driving device to be enhanced.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: January 11, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Hak-ki Choi
  • Patent number: 7868851
    Abstract: The present invention relates to a plasma display apparatus and driving method thereof. The plasma display apparatus according to an embodiment of the present invention comprises a plasma display panel comprising a scan electrode and a sustain electrode, and a driver that controls one or more of sustain pulses supplied to the scan electrode and one or more of sustain pulses supplied to the sustain electrode to be overlapped with each other.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: January 11, 2011
    Assignee: LG Electronics Inc.
    Inventor: Byeong Uk Lee
  • Patent number: 7859528
    Abstract: A power module for energy recovery and sustain of a plasma display panel is disclosed. The power module includes a first high-voltage integrated circuit which is of a single type, a first switching element for receiving an output from the first high-voltage integrated circuit, and performing a switching operation in response to the output received from the first high-voltage integrated circuit, a first diode connected to one terminal of the first switching element, a second high-voltage integrated circuit which is of a single type, and is arranged symmetrically with the first high-voltage integrated circuit, a second switching element for receiving an output from the second high-voltage integrated circuit, and performing a switching operation in response to the output received from the second high-voltage integrated circuit, and a second diode connected to one terminal of the second switching element.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: December 28, 2010
    Assignee: Fairchild Korea Semiconductor, Ltd.
    Inventors: Byoung-Chul Cho, Jun-Bae Lee, Dae-Woong Chung, Bum-Seok Suh
  • Patent number: 7852287
    Abstract: Technology that enables writing in a PDP to be conducted effectively, even when a time period of the writing is shortened. In a PDP driven by a method in which a write discharge is selectively generated in a plurality of cells by applying a scan pulse sequentially to a plurality of first electrodes and a data pulse selectively to a plurality of third electrodes in a write period, the technology provides for a write auxiliary discharge to be generated at least in a cell selected for writing or in a vicinity of the selected cell when the scan pulse is applied in the write period, the write auxiliary discharge being smaller in magnitude than the write discharge. The write auxiliary discharge results in the generation of priming particles in or in a vicinity of the selected cell, and these priming particles facilitate the generation of a write discharge in the selected cell.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: December 14, 2010
    Assignee: Panasonic Corporation
    Inventor: Kazuhiro Yamada
  • Patent number: 7852294
    Abstract: A plasma display apparatus and a driving method thereof are provided. The apparatus includes: an electrode pair having a first electrode and a second electrode, and a third electrode intersecting with the electrode pair; and a first electrode driver, a second electrode driver, and a third electrode driver for applying a driving signal to the respective electrodes, wherein the first electrode driver applies a waveform ramping-up up to a reset voltage during a reset period and falling down to a base voltage substantially without a ramp down.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: December 14, 2010
    Assignee: LG Electronics Inc.
    Inventor: Jung Gwan Han
  • Patent number: 7852295
    Abstract: A plasma display device including a first electrode, a second electrode, and a third electrode crossing the first electrode and the second electrode is disclosed. A plurality of first sustain pulses are applied to the first electrode and a plurality of second sustain pulses are applied to the second electrode during a sustain period of a first subfield. A voltage at the first electrode gradually decreases from a third voltage to a fourth voltage after the voltage at the first electrode gradually increases from a first voltage to a second voltage, during a sub-reset period of a second subfield being consecutive to the first subfield. The plurality of second sustain pulses includes a first group and a second group, the second group includes the last one of the second sustain pulses, and a second sustain pulse of the second group has a different characteristic (e.g., pulse width) from a second sustain pulse of the first group.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: December 14, 2010
    Assignee: Samsung SDI, Co., Ltd.
    Inventors: Joo-Yul Lee, Tae-Hyun 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: 7847758
    Abstract: A plasma display panel driving method in which a reset step and an address step are sequentially executed in the first subfield and second subfield of each field. A microemission step is executed in the first subfield for generating a microemission discharge between ones of the row electrodes and the column electrodes in display cells in the ON mode by applying a voltage for using the ones of the row electrodes as the anode and the column electrodes as the cathode, between the electrodes immediately after the address step. Moreover, in the microemission step, a potential lower than the voltage generated when applying a sustain pulse is respectively applied to the ones and the others of the row electrodes while applying a voltage as described above between the ones of the row electrodes and the column electrodes.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: December 7, 2010
    Assignee: Panasonic Corporation
    Inventors: Shunsuke Itakura, Tsutomu Tokunaga
  • Patent number: 7843405
    Abstract: A plasma display apparatus and method of driving the same is disclosed. The plasma display apparatus includes a calculation unit for calculating an average picture level of an input picture, a sub-field mapping unit for mapping data of the input picture to a first sub-field group and a second sub-field group, and a controller for controlling a time range between the data mapped to the first sub-field group and the data mapped to the second sub-field group according to the average picture level. If the average picture level is calculated at a first level, a generating time point of the data mapped to the second sub-field group is controlled to be at a first starting time point. If the average picture level is calculated at a second level higher than the first level, the generating time point of the data mapped to the second sub-field group is controlled to be at a second starting time point later than the first starting time point.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: November 30, 2010
    Assignee: LG Electronics Inc.
    Inventors: Il Hoon Choi, Sang Jin Yoon
  • Patent number: 7825874
    Abstract: An initialization and driving method for a plasma display panel. When the plasma display panel is turned on, a voltage at a first electrode is increased from a first voltage to a second voltage, and a voltage at a second electrode is reduced from a fourth voltage to the fifth voltage for the purpose of forming wall charges in cells while a third voltage is applied to the second electrode. A voltage is applied to the first electrode and the second electrode to establish a difference between the first electrode and the second electrode to be alternately a sixth voltage and a negative voltage of the sixth voltage, and therefore the cell is discharged.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: November 2, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Woo-Joon Chung, Seung-Hun Chae, Jin-Ho Yang, Jin-Sung Kim, Tae-Seong Kim
  • 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 (“n” 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
  • Publication number: 20100265240
    Abstract: A plasma display device is provided. The plasma display device includes a plasma display panel (PDP) which has an upper substrate, a lower substrate, a plurality of scan electrodes and a plurality of sustain electrodes that are disposed on the upper substrate, and a plurality of address electrodes that are disposed on the lower substrate; and a driving unit which applies driving signals to the scan electrodes, the sustain electrodes and the address electrodes. The driving unit drives the scan electrodes in units of scan electrode groups during an address period, and applies different voltages to the scan electrodes, thereby enabling an address discharge to be stably performed.
    Type: Application
    Filed: April 12, 2008
    Publication date: October 21, 2010
    Applicant: LG ELECTRONICS INC.
    Inventors: Yoon Chang Choi, Byoung Gun Kim, Dong Soo Lee, Hyung Jae Kim, Won Jae Kim
  • Patent number: 7817113
    Abstract: A method for driving a plasma display panel having at least first electrodes and second electrodes which cause discharge in cells is provided. The method includes applying a first pulse and a second pulse to the second electrode in an address preparation period. The method also includes applying a scan pulse to the second pulse to the second electrode in an address period. The method includes the first pulse having a voltage changing with time in a positive direction and the second pulse having a voltage changing with time in a negative direction and the scan pulse having a negative voltage which is lower than the attained voltage of the second pulse.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: October 19, 2010
    Assignee: Hitachi Plasma Patent Licensing Co., Ltd.
    Inventors: Yasunobu Hashimoto, Yasushi Yoneda, Kenji Awamoto, Seiichi Iwasa
  • Patent number: 7812788
    Abstract: The present invention relates to a plasma display panel, in particular to a plasma display apparatus and driving method of same, wherein the bightness of sustain light generated by a sustain pulse by performing floating either a scan electrode or a sustain electrode during a sustain period, thereby increasing the driving efficiency of the plasma display apparatus. A plasma display apparatus according to an aspect of the present invention comprises a plasma display panel comprising a first electrode and a second electrode; and a controller for applying an auxiliary discharge pulse to the second electrode, when a sustain pulse is applied to the first electrode, during a sustain period.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: October 12, 2010
    Assignee: LG Electronics Inc.
    Inventors: Kyoung Jin Jung, Ki Duck Cho, Yoon Chang Choi, Min Soo Kim
  • Patent number: 7808515
    Abstract: A method of driving a plasma display panel (PDP) that includes providing a plurality of X electrodes and a plurality of Y electrodes extending in a first direction, a plurality of A electrodes arranged between the X electrode and the Y electrode and extending in a second direction that crosses the plurality of X electrodes and the plurality of Y electrodes, and a plurality of discharge cells arranged in a region where the A electrodes cross the X electrodes and the Y electrodes. The PDP being driven by applying a pulse waveform voltage alternating between a low level voltage and a high level voltage to the X electrodes and applying a pulse waveform voltage alternating between the high level voltage and the low level voltage to the Y electrodes during a sustain discharge period when sustain discharging occurs in selected ones of the plurality of discharge cells. Voltages and/or pulse widths of the second pulse in the sustain discharge period are made different than other pulses in the sustain discharge period.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: October 5, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Kyoung-Doo Kang
  • Patent number: 7791563
    Abstract: The present invention relates to a plasma display apparatus and a method of driving the same. The plasma display apparatus according to the present invention includes a plasma display panel in which data electrodes are formed; and a data voltage controller for applying a data voltage as a floating state or a first state voltage to the data electrodes. The method of driving a plasma display apparatus according to the present invention includes the steps of: (a) applying a first voltage to the data electrodes; and (b) applying a voltage as a ground level or a floating state to the data electrodes.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: September 7, 2010
    Assignee: LG Electronics Inc.
    Inventors: Jung Gwan Han, Seong Ho Kang
  • Patent number: 7791564
    Abstract: A plasma display apparatus is disclosed. The plasma display apparatus includes a plasma display panel including first, second and third electrodes, a data driver supplying a data signal to the third electrode during an address period, and a sustain driver. The sustain driver consecutively supplies a first signal of a positive polarity direction, a second signal of a negative polarity direction, a third signal of a positive polarity direction, and a fourth signal of a negative polarity direction to the first electrode, and supplies a reference voltage to the second electrode during a sustain period. A duration of a bias period of the first signal is shorter than a duration of a bias period of the third signal.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: September 7, 2010
    Assignee: LG Electronics Inc.
    Inventors: Janghwan Cho, Hyunil Park, Changjoon Park, Sunghwan Kim
  • Patent number: 7786957
    Abstract: A plasma display device which generates reset discharge in a reset period prior to an address period in the beginning subfields of a one-field display period, and applies two sustain pulses, which have rising timings different from each other by a predetermined period of time and have partly overlapping application periods, to row electrodes forming each row electrode pair after ending a sustain period in a last subfield of the one-field display period to thereby cause erasure discharge in discharge cells where sustain discharge has been caused in the last subfield.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: August 31, 2010
    Assignee: Panasonic Corporation
    Inventor: Kazuaki Sakata
  • 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
  • Patent number: 7768493
    Abstract: A plasma display apparatus is disclosed. The plasma display apparatus includes a plasma display panel including a plurality of data electrodes arranged in parallel to each other, and a data driver. The data driver applies a driving voltage to the plurality of data electrodes. The data driver includes a first connector and a second connector positioned at opposite edges of the plasma display panel, respectively. The first connector is electrically connected to some of the plurality of data electrodes, and the second connector is electrically connected to the date electrodes which are not connected to the first connector.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: August 3, 2010
    Assignee: LG Electronics Inc.
    Inventor: Jeong Pil Choi
  • Patent number: 7764250
    Abstract: A plasma display device which comprises a magnesium oxide layer formed on a plane in contact with the discharge space in each display cell of a plasma display panel, having magnesium oxide crystals that perform cathode luminescence light emission with a peak in a wavelength band of 200 to 300 nm as a result of excitation caused by electron-beam irradiation. Each of the display cells is set in a lit cell state or an unlit cell state by selectively inducing an address discharge, and only the display cells set in the lit cell state are caused to perform a sustain discharge by applying a sustain pulse after the selective scanning has ended.
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: July 27, 2010
    Assignee: Panasonic Corporation
    Inventors: Masaru Nishimura, Shigeru Iwaoka
  • Patent number: 7764249
    Abstract: A method and apparatus for driving a plasma display panel for preventing and a spot misfire and a miswriting is disclosed. In the method, wall charges are formed at a discharge cell in an initial period. The discharge cell selects discharge cells in an address period. A wall charge control period is arranged between said initialization period and said address period. A wall charge distribution at the discharge cell is controlled in the wall charge control period. A sustain discharge is caused at discharge cells selected in said address period in the sustain period.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: July 27, 2010
    Assignee: LG Electronics Inc.
    Inventors: Young Dae Kim, Sang Jin Yun, Yong Tae Jeon
  • Patent number: 7760160
    Abstract: Embodiments of the present invention may relate to a plasma display apparatus and a driving method thereof, to reduce the magnitude of noise. The driving method may include applying a ramp-down waveform decreasing to a first voltage to a plurality of scan electrodes, applying a ramp-up waveform increasing from the first voltage to a second voltage gradually with a gradient to the scan electrodes, and applying a scan pulse decreasing from the second voltage to a third voltage to the scan electrodes.
    Type: Grant
    Filed: January 5, 2006
    Date of Patent: July 20, 2010
    Assignee: LG Electronics Inc.
    Inventor: Jung Gwan Han
  • Patent number: 7760159
    Abstract: The present invention relates to an apparatus and method for driving a plasma display panel, and more particularly, to a scan drive apparatus and method of a plasma display panel. The present invention includes a data conversion unit converting video data to converted video data suitable for the PDP, a subfield mapping unit mapping a subfield corresponding to the converted video data, a data comparison unit computing a size of a displacement current by comparing video data of a cell bundle including at least one cell situated on a specific scan line to video data of a cell bundle situated in vertical and horizontal directions of the cell bundle according to each scan type of a plurality of scan types, and a scan sequence decision unit deciding a scan sequence according to the scan type having a small displacement current inputted from the data comparison unit.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: July 20, 2010
    Assignee: LG Electronics Inc.
    Inventors: Takuya Watanabe, Seong Ho Kang, Sang Jin Yoon, Soo Seok Sim
  • Patent number: 7755575
    Abstract: Provided is a plasma display apparatus. The plasma display apparatus includes a first electrode and a second electrode formed in parallel on an upper substrate, and a third electrode formed on a lower substrate to intersect with the first electrode and the second electrode. A driving signal is applied to the first electrode, the second electrode, and the third electrode in a reset period, an address period, and a sustain period per one subfield. The reset period comprises a setdown period. A difference between a setdown lowest voltage of the driving signal applied to the first electrode and a voltage applied to the second electrode in the setdown period is 1.2 times to 1.5 times of a sustain voltage.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: July 13, 2010
    Assignee: LG Electronics Inc.
    Inventors: Chan Woo Kim, Seok Dong Kang
  • Patent number: 7755574
    Abstract: In a plasma display device, a second terminal of a first transistor, whose first terminal is connected to an electrode, is connected to a power source for supplying a first voltage. A first driver is adapted to drive the first transistor to change the voltage of the electrode, and a second driver adapted to sustain the voltage of the electrode substantially at a second voltage differing from the first voltage by intercepting a path between the first transistor and the power source when the voltage of the electrode is changed into the second voltage in a first period, and to change the voltage of the electrode substantially back to the first voltage in a second period. In this way, it is possible to supply two or more voltages having a different voltage level by one power source.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: July 13, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Joo-Yul Lee
  • Patent number: 7750870
    Abstract: A method and circuit to control of a circuit for addressing at least one line electrode of a plasma display panel having, for each line, a line selection stage formed of two switches in series between two input terminals of the selection stage, the method including use of a first one of the two switches of the selection stage of each line to flow a current from or to an inductive element of the addressing circuit.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: July 6, 2010
    Assignee: STMicroelectronics SA
    Inventors: Jean-Raphael Bezal, Gilles Troussel, Jean-Marie Permezel
  • Patent number: 7750565
    Abstract: A plasma display panel having an enhanced arrangement of pixels and electrodes enabling higher integration of pixels. A front substrate and a rear substrate are formed having opposing surfaces and a plurality of discharge cells are partitioned in a space therebetween. A plurality of address electrodes are formed along a first direction between the front and rear substrates. A plurality of display electrodes are formed along a second direction between the front and rear substrates and are electrically separated from the plurality of address electrodes. At least two discharge cells among a plurality of discharge cells included in respective pixels correspond to and are driven by a same address electrode.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: July 6, 2010
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Sang-Hoon Yim
  • Patent number: 7746297
    Abstract: The present invention provides a method of driving a gas discharge display apparatus for displaying gray-scale display levels finer than those achieved by the conventional methods, and also to provide a gas discharge display apparatus with a driver capable of performing such a driving method. An opposed discharge between the sustaining electrode and the address electrode in addition to the conventional surface discharge is generated for the light emission from the fluorescent material in light emitting tubes. The method and the apparatus effect improvements in finer gray-scale display levels than those by the conventional methods.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: June 29, 2010
    Assignee: Shinoda Plasma Corporation
    Inventors: Hitoshi Hirakawa, Manabu Ishimoto, Kenji Awamoto
  • Patent number: RE41817
    Abstract: When performing the line-sequential addressing for setting the state of each of the cells arranged in rows and columns that constitute a display screen, discharge is generated that has intensity in accordance with display data corresponding to each of all cells belonging to the selected row for each selection of the row. Thus, the priming effect in the following discharge is generated.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: October 12, 2010
    Assignee: Hitachi Plasma Patent Licensing Co., Ltd.
    Inventors: Yasunobu Hashimoto, Yasushi Yoneda, Kenji Awamoto, Seiichi Iwasa
  • Patent number: RE41832
    Abstract: When performing the line-sequential addressing for setting the state of each of the cells arranged in rows and columns that constitute a display screen, discharge is generated that has intensity in accordance with display data corresponding to each of all cells belonging to the selected row for each selection of the row. Thus, the priming effect in the following discharge is generated.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: October 19, 2010
    Assignee: Hitachi Plasma Patent Licensing Co., Ltd
    Inventors: Yasunobu Hashimoto, Yasushi Yoneda, Kenji Awamoto, Seiichi Iwasa
  • Patent number: RE42308
    Abstract: To provide an electro-optical device and an electronic apparatus capable of maintaining the display quality by preventing brightness unevenness without widening a frame in a mounting terminal portion connection portions connecting to a fourth power source bus line are provided in two places. Driving current is supplied from the connection portions to the fourth power source bus line. The width of the fourth power source bus line is smaller than that of the width of a power source bus line supplying driving current from one place of the mounting terminal portion.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: April 26, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Hiroshi Hirayama