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    IMAGE DISPLAY UNIT
    2.
    发明专利
    IMAGE DISPLAY UNIT 未知

    公开(公告)号：AU2003235217A1

    公开(公告)日：2003-10-27

    申请号：AU2003235217

    申请日：2003-04-17

    Applicant: BRIDGESTONE CORP

    Inventor： NIHEI NORIO ,  KITANO SOU ,  TAKAGI MITSUHARU ,  YAKUSHIJI MANABU ,  MURATA KAZUYA ,  SAKURAI RYOU ,  IWABUCHI YOSHINORI ,  YAMAZAKI HIROTAKA ,  MASUDA YOSHITOMO ,  HATTORI REIJI

    IPC: G02F1/1333 ,  G02F1/1343 ,  G02F1/167 ,  G09G3/34 ,  H03L7/087 ,  H03L7/089 ,  H03L7/113

    Abstract: A dry-toner type coloured particle display (fig. 13) is disclosed. In the image display panel, two or more groups of particles (103) having different colours and different charging characteristics are sealed in the space between two substrates (101,102), at least one of which is transparent. The particles move through the space in response to an applied electrostatic field produced by a pair of electrodes arranged on the substrates in order to display an image. Surface texture parameters R a (average roughness) and S m (usually an average peak to peak distance between neighbouring asperities on a surface) of the bounding substrates lie within specified ranges, defined relative to the particle size, in order to weaken attractive forces between the particles and the surface of the respective substrate. These attractive forces can be adhesion forces such as intermolecular and electrostatic image charge forces (as well as others), and are reduced by decreasing the effective particle to substrate contact area. As a result, the particles are more easily removed and the display driving voltage is reduced. Further display arrangements include the provision of bumps, dips or micro-cutouts on part of a substrate electrode to create a lateral electric field component, which again weakens attractive forces between the particles and the substrate electrode. Additionally, there is an arrangement disclosed in which an insulating member having a volume resistivity Á of not less than 1 x 10 12 ©.cm is coated thinly on to the surface of the substrate with which the particles are in contact in order to prevent leakage of charge away from the particles to the substrate. Finally, there is an arrangement in which the display state of the image can be read-out by detecting the current due to the particles when these are moved inside a pixel.

    IMAGE DISPLAY UNIT
    5.
    发明专利
    IMAGE DISPLAY UNIT 未知

    公开(公告)号：AU2003207186A1

    公开(公告)日：2003-09-04

    申请号：AU2003207186

    申请日：2003-02-07

    Applicant: BRIDGESTONE CORP

    Inventor： KITANO SOU ,  YAKUSHIJI MANABU ,  MURATA KAZUYA ,  TAKAGI MITSUHARU ,  MASUDA YOSHITOMO ,  KAWAGOE TAKAHIRO ,  HATTORI REIJI ,  NIHEI NORIO

    IPC: G02F1/167 ,  G09G3/20 ,  G09G3/34 ,  G02F1/17

    Abstract: Each embodiment relates to an image display device which comprises an image display panel, in which two or more groups of particles having different colors and different charge characteristics are sealed between two substrates, at least one of two substrates being transparent, and, in which the particles, to which an electrostatic field produced by a pair of electrodes provided on one or both substrates is applied, are made to fly and move so as to display an image. Among them, in the first aspect of the invention, an image forming process for forming the image by applying an electric field pattern between the electrodes, the electric field pattern serving to fly particles A to the substrate at an image display side; and an image forming process for forming the image by applying an inversion (negative) electric field pattern with respect to the electric field pattern, the inversion electric field pattern serving to fly particles B having different colors and different charge characteristics with respect to those of the particles A to the substrate at an image display side; so that an image deleting process prior to forming the image to be displayed is eliminated.

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