MULTICOLORED CATHODE-LUMINESCENT SCREEN OF MATRIX TYPE Russian patent published in 1999 - IPC

FIELD: indicating equipment. SUBSTANCE: invention is related to low-voltage information displays based on cathode luminescence and designed to display analog and digital, character and graphical and television information with scope for its coding by color and for color synthesizing with formation of full-color screen. Invention is aimed at provision of precision coating of anode lines with luminescent compound by method of electrophoresis. Proposed multicolored cathode-luminescent screen of matrix type includes vacuum shell, system of directly heated cathodes, row of anode bars applied to insulation base, coated with luminophor and connected by current-carrying tracks to external leads via bonding pads, modulator electrodes orthogonal to anode bars and forming light-emitting segments in cross-hairs. Anode bars are arranged with color alternation: red-green-dark blue ( RGB ) and zones for positioning of assemblage of external bonding pads of one color of anode bars are made separate for each color. Number of zones correspond to number of colors of screen. Length l of zone is determined by number n of bonding pads corresponding to number of lines of given color and spacing t of their arrangement and satisfies condition l=nt. EFFECT: provision of precision coating of anode lines with luminescent compound by method of electrophoresis. 6 dwg