Flat panel color display

Claim 1

A flat display comprising: a front panel having a fluorescent screen on a rear surface, the fluorescent screen including an arrangement of rows of phosphors, each row having three primary colors, each primary color arranged in a column; a rear panel opposed to the front panel in parallel thereto to define a flat hermetic space with the front panel and having a back electrode on a surface facing the front panel; a plurality of linear filament cathodes arranged close to an inner surface of the rear panel in parallel thereto, the linear filament cathodes arranged for every three rows of the phosphors and in parallel to said rows; an address electrode plate disposed in a vicinity of an inner surface of the front panel in parallel to the front panel, the address electrode plate having a plurality of first address electrodes extending in parallel to one another and formed on one surface of a substrate in a form of a planar plate, a plurality of second address electrodes formed on another surface of the substrate and extending in parallel to one another in a direction intersecting the first address electrodes, and one or a plurality of apertures formed at each position where the first address electrodes and the second address electrodes overlap each other with the substrate provided therebetween; and a plurality of spacer ridges formed on the inner surface of the rear panel, the spacer ridges extending along the linear filament cathodes and arranged for every linear filament cathode, the spacer ridges having a height to reach the address electrode plate, wherein three rows of the phosphors, between the spacer ridges, are formed symmetrically with respect to each linear filament cathode, a central row of the phosphors positioned immediately above each linear filament cathode.