Patents Assigned to HITACHI PATENT LICENSING CO., LTD
  • Publication number: 20120154357
    Abstract: A method for driving a plasma display panel having at least three electrodes. The method includes applying a first pulse having a voltage changing with time in a positive direction and a second pulse having a voltage changing with time in a negative direction to a second main electrode in an address preparation period. The method also includes applying a scan pulse to the second main electrode in an address period. The method also includes at least one of the first and second pulses in the address preparation period has a stepwise waveform whose voltage rise or fall stepwise.
    Type: Application
    Filed: February 22, 2012
    Publication date: June 21, 2012
    Applicant: HITACHI PATENT LICENSING CO., LTD.
    Inventors: Yasunobu HASHIMOTO, Yasushi Yoneda, Kenji Awamoto, Seiichi Iwasa
  • Publication number: 20090251444
    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: Application
    Filed: March 24, 2009
    Publication date: October 8, 2009
    Applicant: HITACHI PATENT LICENSING CO., LTD
    Inventors: Yasunobu Hashimoto, Yasushi Yoneda, Kenji Awamoto, Seiichi Iwasa
  • Publication number: 20080191974
    Abstract: A method for driving a plasma display panel having at least three electrodes. The method includes applying a first pulse having a voltage changing with time in a positive direction and a second pulse having a voltage changing with time in a negative direction to a second main electrode in an address preparation period. The method also includes applying a scan pulse to the second main electrode in an address period. The method also includes at least one of the first and second pulses in the address preparation period has a stepwise waveform whose voltage rise or fall stepwise.
    Type: Application
    Filed: April 8, 2008
    Publication date: August 14, 2008
    Applicant: HITACHI PATENT LICENSING CO., LTD.
    Inventors: Yasunobu Hashimoto, Yasushi Yoneda, Kenji Awamoto, Seiichi Iwasa
  • Publication number: 20070262925
    Abstract: A method for driving an AC type surface-discharge display device which has cells arranged in a matrix. Each of the cells has at least three electrodes including a pair of main electrodes on every line of the matrix and an address electrode on every column of the matrix. The method includes providing an address preparation period applying a charge producing pulse and applying a charge adjusting pulse. The charge adjusting pulse has a waveform monotonously falling from a reference potential and a negative polarity and is applied to the second main electrode used as a scan electrode and generates feeble electric discharges between the first and second main electrodes. The feeble electric discharges are accompanied by a decrease of the wall voltage formed by the charge producing pulse.
    Type: Application
    Filed: July 25, 2007
    Publication date: November 15, 2007
    Applicant: HITACHI PATENT LICENSING CO., LTD.
    Inventors: Yasunobu Hashimoto, Yasushi Yoneda, Kenji Awamoto, Seiichi Iwasa
  • Publication number: 20070262926
    Abstract: A method for driving an AC type surface-discharge display device having cells arranged in a matrix. Each cell has at least three electrodes including a pair of main electrodes and on every line of the matrix and an address electrode on every column of the matrix. The method includes conducting an address preparation period including applying a first charge adjusting voltage, monotonously rising or falling, to a gap between the main electrodes. The method also includes applying a charge adjusting voltage, monotonously rising or falling, to a gap between a scan electrode and the address electrode.
    Type: Application
    Filed: July 25, 2007
    Publication date: November 15, 2007
    Applicant: HITACHI PATENT LICENSING CO., LTD.
    Inventors: Yasunobu HASHIMOTO, Yasushi YONEDA, Kenji AWAMOTO, Seiichi IWASA