Patents Assigned to Fujitsu Hitachi Plasma Display Ltd.
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Patent number: 7868852Abstract: A method of driving a PDP apparatus to sufficiently suppress the background light emission and improve the dark room contrast, in which first electrodes and second electrodes are arranged adjacently by turns, a first display line is formed between one side of the second electrode and the first electrode adjacent thereto, a second display line is formed between the other side of the second electrode and the first electrode adjacent thereto, and the interlaced display that displays the first display line and the second display line alternately in different fields is performed, has been disclosed, wherein the reset voltage that directly relates to the intensity of the background light emission is varied according to the number of times of sustain discharges, the display conditions, and so on, in each subfield and the reset discharge is caused to occur with the minimum voltage in each subfield.Type: GrantFiled: March 13, 2007Date of Patent: January 11, 2011Assignee: Fujitsu Hitachi Plasma Display Ltd.Inventors: Yoshikazu Kanazawa, Shigeharu Asao
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Patent number: 7450090Abstract: A plasma display panel and an imaging device realize a high luminous efficiency, a long lifetime and stable driving. The plasma display panel uses a discharge-gas mixture containing at least Xe, Ne and He. A Xe proportion of the discharge-gas mixture is in a range of from 2% to 20%, a He proportion of the discharge-gas mixture is in a range of from 15% to 50%, the He proportion is greater than the Xe proportion, and a total pressure of the discharge-gas mixture is in a range of from 400 Torr to 550 Torr. A width of a voltage pulse to be applied to an electrode serving as an address electrode is 2 ?s or less.Type: GrantFiled: April 4, 2006Date of Patent: November 11, 2008Assignees: Hitachi, Ltd., Fujitsu Hitachi Plasma Display, Ltd.Inventors: Norihiro Uemura, Keizo Suzuki, Hiroshi Kajiyama, Yusuke Yajima, Masayuki Shibata, Yoshimi Kawanami, Koji Ohira, Ikuo Ozaki
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Publication number: 20070152911Abstract: A method of driving a PDP apparatus to sufficiently suppress the background light emission and improve the dark room contrast, in which first electrodes and second electrodes are arranged adjacently by turns, a first display line is formed between one side of the second electrode and the first electrode adjacent thereto, a second display line is formed between the other side of the second electrode and the first electrode adjacent thereto, and the interlaced display that displays the first display line and the second display line alternately in different fields is performed, has been disclosed, wherein the reset voltage that directly relates to the intensity of the background light emission is varied according to the number of times of sustain discharges, the display conditions, and so on, in each subfield and the reset discharge is caused to occur with the minimum voltage in each subfield.Type: ApplicationFiled: March 13, 2007Publication date: July 5, 2007Applicant: Fujitsu Hitachi Plasma Display Ltd.Inventors: Yoshikazu Kanazawa, Shigeharu Asao
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Patent number: 7071901Abstract: A plasma display panel and an imaging device realize a high luminous efficiency, a long lifetime and stable driving. The plasma display panel uses a discharge-gas mixture containing at least Xe, Ne and He. A Xe proportion of the discharge-gas mixture is in a range of from 2% to 20%, a He proportion of the discharge-gas mixture is in a range of from 15% to 50%, the He proportion is greater than the Xe proportion, and a total pressure of the discharge-gas mixture is in a range of from 400 Torr to 550 Torr. A width of a voltage pulse to be applied to an electrode serving as an address electrode is 2 ?s or less.Type: GrantFiled: October 12, 2004Date of Patent: July 4, 2006Assignees: Hitachi, Ltd., Fujitsu Hitachi Plasma Display Ltd.Inventors: Norihiro Uemura, Keizo Suzuki, Hiroshi Kajiyama, Yusuke Yajima, Masayuki Shibata, Yoshimi Kawanami, Koji Ohira, Ikuo Ozaki
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Publication number: 20060125411Abstract: A capacitive-load driving circuit has a configuration in which a driving power supply source is connected to an output terminal via a driving device. The capacitive-load driving circuit has a power distributing circuit inserted between the driving power supply source and the driving device. Therefore, temperature rise (power consumption) in the capacitive-load driving circuit can be distributed.Type: ApplicationFiled: February 10, 2006Publication date: June 15, 2006Applicant: FUJITSU HITACHI PLASMA DISPLAY LTD.Inventors: Yuji Sano, Akihiro Takagi, Tomokatsu Kishi, Toyoshi Kawada, Hirokazu Inoue
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Patent number: 6822627Abstract: There are provided a plasma display panel and an imaging device which realize a high luminous efficiency, guaranteed long lifetime and stable driving. The plasma display panel uses a discharge-gas mixture containing at least Xe, Ne and He. A Xe proportion of the discharge-gas mixture is in a range of from 2% to 20%, a He proportion of the discharge-gas mixture is in a range of from 15% to 50%, the He proportion is greater than the Xe proportion, and a total pressure of the discharge-gas mixture is in a range of from 400 Torr to 550 Torr. A width of a voltage pulse to be applied to an address electrode is 2 &mgr;s or less.Type: GrantFiled: August 19, 2002Date of Patent: November 23, 2004Assignees: Hitachi, Ltd., Fujitsu Hitachi Plasma Display Ltd.Inventors: Norihiro Uemura, Keizo Suzuki, Hiroshi Kajiyama, Yusuke Yajima, Masayuki Shibata, Yoshimi Kawanami, Koji Ohira, Ikuo Ozaki
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Publication number: 20030218579Abstract: There are provided a plasma display panel and an imaging device which realize a high luminous efficiency, guaranteed long lifetime and stable driving. The plasma display panel uses a discharge-gas mixture containing at least Xe, Ne and He. A Xe proportion of the discharge-gas mixture is in a range of from 2% to 20%, a He proportion of the discharge-gas mixture is in a range of from 15% to 50%, the He proportion is greater than the Xe proportion, and a total pressure of the discharge-gas mixture is in a range of from 400 Torr to 550 Torr. A width of a voltage pulse to be applied to an address electrode is 2 &mgr;s or less.Type: ApplicationFiled: August 19, 2002Publication date: November 27, 2003Applicants: Hitachi, Ltd., Fujitsu Hitachi Plasma Display Ltd.Inventors: Norihiro Uemura, Keizo Suzuki, Hiroshi Kajiyama, Yusuke Yajima, Masayuki Shibata, Yoshimi Kawanami, Koji Ohira, Ikuo Ozaki
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Publication number: 20030179160Abstract: A plasma display device of high luminous efficiency is provided. In a plasma display device for performing driving including at least an address period and a sustain-discharge period for emission display, the sustain-discharge period includes a pulse application period and an open period, a voltage of an electrode to which a relatively positive voltage is applied in a sustain-discharge electrode pair in a pulse application period immediately before the open period is set as Vsp, and the voltage of the other electrode is set as Vsn, Vsp−Vsn has a significantly negative value in the open period, and light is emitted by a discharge in the open period.Type: ApplicationFiled: August 14, 2002Publication date: September 25, 2003Applicants: Hitachi, Ltd., Fujitsu Hitachi Plasma Display, Ltd.Inventors: Kenichi Yamamoto, Keizo Suzuki, Hiroshi Kajiyama, Shirun Ho, Tomokatsu Kishi, Kyoji Kariya
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Patent number: 6621229Abstract: A discharge is initiated in a cell in which an address discharge is conducted at a first timing T1 in a charge adjustment period. Next, at a second timing T2, a discharge is initiated for adjusting a wall charge in a cell where a charge remains therein because the address discharge does not occurred. Thus, some negative charges are formed in an X electrode and a Y electrode, thus preventing a false discharge from occurring in an unselected cell.Type: GrantFiled: July 31, 2001Date of Patent: September 16, 2003Assignees: Hitachi, Ltd., Fujitsu Hitachi Plasma Display Ltd.Inventors: Yoshikazu Kanazawa, Shirun Ho, Keizo Suzuki