Multi-indicia fluorescent display tube

Details Multi-indicia fluorescent display tube Multi-indicia fluorescent display tube

1976-12-09

1978-10-24

Demeo, Palmer C.

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

313496, 313519, 313313, H01J 172, H01J 6306, H05B 3700

Patent

active

041223764

ABSTRACT:
A multi-indicia fluorescent display tube having a casing formed of a base plate and a cover plate bonded together, a plurality of pattern display sections provided on the base plate and each composed of a plurality of segment anodes each having a fluorescent layer thereon, a cathode stretched opposite to the pattern display sections, shield-electrode layers for preventing electrification, etc. provided on the portions of the base plate in the vicinity of the segment anodes, and a diffusion electrode for levelling the density of electron current flowing from the cathode to each of the segment anodes during operation by the influence of a positive potential applied thereto with respect to the cathode potential, said diffusion electrode being provided on the portion of the inside surface of the cover plate opposite to the pattern display sections or in the vicinity of the inside surface of the cover plate.

REFERENCES:
patent: 3571655 (1971-03-01), Tanimoto
patent: 3614546 (1971-10-01), Avins
patent: 3858073 (1974-12-01), Kohyama et al.
patent: 4004186 (1977-01-01), Bylander
patent: 4045703 (1977-08-01), Mori et al.
patent: 4047072 (1977-09-01), Kishino et al.

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