1.
    发明专利
    未知

    公开(公告)号:BR9105197A

    公开(公告)日:1992-08-18

    申请号:BR9105197

    申请日:1991-11-29

    Applicant: PHILIPS NV

    Abstract: Picture display device having a vacuum envelope with a face plate whose inner side is provided with a luminescent screen having a repetitive pattern of triplets of red, green and blue-luminescing phosphor elements, a rear plate at a short distance therefrom and in the space therebetween a plurality of electron emitters and juxtaposed, electron ducts cooperating therewith and having walls of substantially electrically insulating material having a secondary emission coefficient suitable for electron transport for transporting, through vacuum, produced electrons in the form of electron currents. Means are provided for withdrawing each electron current at predetermined locations from its duct and for directing this current towards a desired location on the luminescent screen for producing a picture composed of pixels.

    FLAT-PANEL TYPE PICTURE DISPLAY DEVICE

    公开(公告)号:MY108815A

    公开(公告)日:1996-11-30

    申请号:MYPI19930163

    申请日:1993-02-03

    Applicant: PHILIPS NV

    Abstract: FLAT-PANEL TYPE PICTURE DISPLAY DEVICE (3) HAVING A FACE PLATE WITH A LUMINESCENT SCREEN (7) AT THE INNER SIDE AND, ARRANGED AT A SHORT DISTANCE THEREFROM, A REAR WALL (7) ADJOINING BY A LARGE NUMBER OF ELECTRON TRANSPORT DUCTS (6) OPERATING BY MEANS OF WALL INTERACTION OF ELECTRONS. A SELECTION STRUCTURE (10C) FOR WITHDRAWING ELECTRONS FROM TRANSPORT DUCTS (6) FOR DIRECTING THEM TOWARDS PIXELS ON THE LUMINESCENT SCREEN (7) COMPRISES A PRESELECTION STRUCTURE (10A) PROVIDED WITH SELECTION LOCATIONS AND A FINE-SELECTION PLATE (10C) PROVIDED WITH FINE-SELECTION APERTURES (8), EACH PRESELECTION LOCATION BEING ASSOCIATED WITH AT LEAST TWO FINE-SELECTION APERTURES. TO IMPROVE CONTRAST AND/OR COLOUR PURITY, AND APERTURED OBSTRUCTION PLATE (10B) FORMING CHICANES IN THE ELECTRON PATHS IS ARRANGED BETWEEN THE PRESELECTION PLATE (10A) AND THE FINE-SELECTION PLATE (10C). (FIG. 1)

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