2.
    发明专利
    未知

    公开(公告)号:DE69122722T2

    公开(公告)日:1997-03-06

    申请号:DE69122722

    申请日:1991-11-27

    Applicant: FUJITSU LTD

    Inventor: SHINODA TSUTAE

    Abstract: A driving circuit for a flat display panel formed of a plurality of cells arranged in lines and each having a memory function is adapted to produce a desired gradation of visual brightness in an image displayed on the display panel during a frame time period, the frame time period being divided into a series of subframes, and each subframe comprising an address period and a display period subsequent to the address period. The driving circuit comprises means for selecting pixels to be activated in respective subframes of the frame time period and means for activating the selected pixels during the address period of a subframe and for lighting the activated pixels in the display period of the respective subframe. The activating means is adapted to apply sustain pulses to all the pixels of the display during the display periods of the subframes and thereby illuminate activated pixels. The selecting means is adapted to select pixels for activation in subframes of a frame such that the cumulative number of sustain pulses applied to each pixel produces the desired gradation of brightness of the image displayed during the frame time period. The activation means is adapted to address selected pixels in the plurality of lines during an address period of a subframe, which is common to said plurality of lines.

    3.
    发明专利
    未知

    公开(公告)号:DE3586142D1

    公开(公告)日:1992-07-09

    申请号:DE3586142

    申请日:1985-03-14

    Applicant: FUJITSU LTD

    Abstract: An AC driving surface discharge display panel has a matrix arrangement of a plurality of display dots each of which comprises a pair of display cell and selection cell. Firstly, all display cells on a selected line are simultaneously fired, by applying a firing voltage between pairing parallel display electrodes defining said display cell line. Next, a discharge information stored unwanted display cell among said fired display cell line is selectively erased by discharging an adjacent pairing selection cell. An address sequence of the present invention comprising the line firing step and selective erasing step is performed with wide operation margin.

    4.
    发明专利
    未知

    公开(公告)号:DE3867252D1

    公开(公告)日:1992-02-13

    申请号:DE3867252

    申请日:1988-02-16

    Applicant: FUJITSU LTD

    Abstract: A fluorescent gas-discharge display panel, in which a fluorescent material (8) is excited by a gas discharge therein, contains a gas mixture of neon, argon and xenon as the discharge gas (9). Typically, the argon gas content is more than 5% by partial pressure, and the xenon gas less than 10%. The argon gas content contributes to produce a pure and high peak of green light spectrum and to reduce the orange light spectrum produced by the discharge of the neon gas. Other characteristics, such as operation voltages, brightness, luminous efficacy, and operation life, are kept satisfactory.

    8.
    发明专利
    未知

    公开(公告)号:DE69125508T2

    公开(公告)日:1997-07-10

    申请号:DE69125508

    申请日:1991-11-27

    Applicant: FUJITSU LTD

    Inventor: SHINODA TSUTAE

    Abstract: A driving circuit for a flat display panel formed of a plurality of cells arranged in lines and each having a memory function is adapted to produce a desired gradation of visual brightness in an image displayed on the display panel during a frame time period, the frame time period being divided into a series of subframes, and each subframe comprising an address period and a display period subsequent to the address period. The driving circuit comprises means for selecting pixels to be activated in respective subframes of the frame time period and means for activating the selected pixels during the address period of a subframe and for lighting the activated pixels in the display period of the respective subframe. The activating means is adapted to apply sustain pulses to all the pixels of the display during the display periods of the subframes and thereby illuminate activated pixels. The selecting means is adapted to select pixels for activation in subframes of a frame such that the cumulative number of sustain pulses applied to each pixel produces the desired gradation of brightness of the image displayed during the frame time period. The activation means is adapted to address selected pixels in the plurality of lines during an address period of a subframe, which is common to said plurality of lines.

    9.
    发明专利
    未知

    公开(公告)号:DE69125508D1

    公开(公告)日:1997-05-07

    申请号:DE69125508

    申请日:1991-11-27

    Applicant: FUJITSU LTD

    Inventor: SHINODA TSUTAE

    Abstract: A driving circuit for a flat display panel formed of a plurality of cells arranged in lines and each having a memory function is adapted to produce a desired gradation of visual brightness in an image displayed on the display panel during a frame time period, the frame time period being divided into a series of subframes, and each subframe comprising an address period and a display period subsequent to the address period. The driving circuit comprises means for selecting pixels to be activated in respective subframes of the frame time period and means for activating the selected pixels during the address period of a subframe and for lighting the activated pixels in the display period of the respective subframe. The activating means is adapted to apply sustain pulses to all the pixels of the display during the display periods of the subframes and thereby illuminate activated pixels. The selecting means is adapted to select pixels for activation in subframes of a frame such that the cumulative number of sustain pulses applied to each pixel produces the desired gradation of brightness of the image displayed during the frame time period. The activation means is adapted to address selected pixels in the plurality of lines during an address period of a subframe, which is common to said plurality of lines.

    10.
    发明专利
    未知

    公开(公告)号:DE69122722D1

    公开(公告)日:1996-11-21

    申请号:DE69122722

    申请日:1991-11-27

    Applicant: FUJITSU LTD

    Inventor: SHINODA TSUTAE

    Abstract: A driving circuit for a flat display panel formed of a plurality of cells arranged in lines and each having a memory function is adapted to produce a desired gradation of visual brightness in an image displayed on the display panel during a frame time period, the frame time period being divided into a series of subframes, and each subframe comprising an address period and a display period subsequent to the address period. The driving circuit comprises means for selecting pixels to be activated in respective subframes of the frame time period and means for activating the selected pixels during the address period of a subframe and for lighting the activated pixels in the display period of the respective subframe. The activating means is adapted to apply sustain pulses to all the pixels of the display during the display periods of the subframes and thereby illuminate activated pixels. The selecting means is adapted to select pixels for activation in subframes of a frame such that the cumulative number of sustain pulses applied to each pixel produces the desired gradation of brightness of the image displayed during the frame time period. The activation means is adapted to address selected pixels in the plurality of lines during an address period of a subframe, which is common to said plurality of lines.

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