MATRIX CATHODOLUMINESCENT SCREEN Russian patent published in 2010 - IPC H01J17/49 H01J31/12 H01J29/18 

FIELD: physics.

SUBSTANCE: invention relates to electronic engineering and can be used for designing flat-type vacuum fluorescent displays which display text, digital or graphical information. The matrix cathodoluminescent screen contains a transparent vessel inside, consisting of an anode plate and a cover, with anode electrodes on the anode plate which are coated with luminophor, filament-type cathodes and control electrodes made in form of a bus and anode electrodes lying orthogonally on the cover of the vessel, where the said anode electrodes form light-emitting elements - pixels, connected by current carrying tracks to external leads through contact pads. Filament-type cathodes lie in parallel to the control electrodes and between them. The number of filament-type cathodes per unit is greater than the number of pixel rows. The distances between the anode electrodes and the filament-type cathodes, between the control electrodes and filament-type cathodes are linked by the expressions:

where d₁ is the distance from the control electrodes to the filament-type electrodes; d₂ is the distance from the anode electrodes to the filament-type cathodes; a is the spacing of the pixel rows.

EFFECT: improved parametres, increased reliability, low cost and competitiveness.

3 cl, 3 dwg