CATHODOLUMINESCENT SCREEN DISPOSED ON ACTIVE MATRIX SUBSTRATE Russian patent published in 2007 - IPC H01J31/12 H01J17/49 H01J1/88 

FIELD: display engineering; cathodoluminescent screens built on active matrix substrate to display not only universal alphanumeric data but also television and computer information.

SUBSTANCE: proposed cathodoluminescent screen which is disposed on active matrix substrate and has vacuum envelope incorporating face glass plate and bottom glass plate mounting active matrix substrate with dual-channel addressing system (X, Y) and control system for each of plurality of phosphor-covered light-emitting components of at least one color, as well as set of filamentary hot cathodes, glass frame tightly joining face and bottom glass plates is diode-type screen; ratio of distance between centers of filamentary hot cathode bases in set of filamentary hot cathodes to that between disposition planes of set of light-emitting components and set of hot cathodes meets following condition: 0.8 ≤ t_cb/x_c-a < 1.6, where t_cb is distance between centers of filamentary hot cathode bases in set of filamentary hot cathodes; X_c-a is distance between disposition planes of set of light-emitting components and set of filamentary hot cathodes; duty factor F_cb/t_cb meets following condition: 0.6 · 10^-2 ≤ F_cb/t_cb ≤ 1.6 · 10^-2, where F_cb is diameter of filamentary hot cathode base.

EFFECT: enhanced body of information, continuous brightness (absence of "washing-board" effect).

1 cl, 3 dwg