Luminescent panel for color video display and its driving...

H - Electricity – 01 – J

Patent

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Details

H01J 17/49 (2006.01) H01J 17/58 (2006.01)

Patent

CA 2127850

A plurality of filaments are stretched in parallel on a rear plate, and an insulating plate is provided so as to cover the filaments. In the insulating plate, a plurality of through-holes are formed along the longitudinal direction of the respective filaments for exposing parts thereof. Each through-hole and phosphor layers, which are provided on the insulating layer adjacent to the through-hole, constitute one unit picture element. The respective phosphor layers in the respective picture element are installed in a plurality of cavities formed in a rib provided on a lower surface of the insulating plate, whereby separated from the neighboring phosphor layers. The respective cavities function as a discharge room, with a light-transmissive front plate, formed on the rib, as a lid and a portion of the insulating plate corresponding to the phosphor layer as a bottom. The respective discharge rooms overlap the through-hole at one end in the longitudinal direction thereof. A part of the filaments is exposed to the discharge room via the through-hole so as to act as a cathode. In addition, an anode exists respectively at the other end of the respective discharge rooms. In this manner, a luminescent panel for color video display, with a plurality of picture elements arranged in a matrix with a narrowed-pitch and a high density, is provided.

Une série de filaments sont étirés en parallèle sur une plaque arrière et couverts au moyen d'une plaque isolante. La plaque isolante comporte une série de trous traversants orientés dans le sens des différents filaments pour en exposer certaines parties. Chaque trou traversant et les couches de phosphore qui se trouvent sur la plaque isolante à proximité des trous traversants constituent un élément d'image unitaire. Les couches de phosphore des différents éléments d'image se trouvent dans une série de cavités formés dans une nervure de la face inférieure de la plaque isolante et sont, de ce fait, séparées les unes des autres. Les cavités susmentionnées constituent des chambres de décharge, une plaque avant translucide formée sur la nervure précitée servant de couvercle et une partie de la plaque isolante correspondant à la couche de phosphore, de fond. Chaque chambre de décharge chevauche le trou traversant correspondant à une de ses extrémités dans le sens longitudinal. Une partie des filaments est exposée à la chambre de décharge par le trou traversant et sert de cathode. Par ailleurs, il y a une anode à l'autre extrémité de chacune des chambres de décharge. Ce montage donne un panneau luminescent d'affichage vidéo couleur comportant une matrice d'éléments d'image à pas étroit et haute densité.

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