High luminance color picture element tubes

Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube

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313113, H01J 2988, H01J 1957, H01J 1974, H01J 6304

Patent

active

047376830

ABSTRACT:
The present invention relates to high luminant fluorescent color picture element tubes and display units of the same for large area or giant area display. A fluorescent picture element tube comprises a cathode, a control electrode, an anode, and a light output window. Several such color tubes may be arranged in line or matrix to construct a color picture element tube display unit representing one or more picture elements. The light emitted by the phosphor coated on the large area of the anode passes through the relatively small area of the light output window. A high luminance efficiency may also be obtained as the good heat dissipation of the anode. So higher light output can be obtained and the anode voltage can be reduced.
The cost of large area or giant area display system using the tubes and units which have simple construction and lower drive voltage is greatly reduced. The display of monochrome, polychrome, color, and changeable color is also achievable.

REFERENCES:
patent: 4352043 (1982-09-01), Rigden
patent: 4506191 (1985-03-01), Takenobu
Fukushima et al., "A Light-Emitting Tube Array for Giant Colour Display", Displays, (Oct. 1983), pp. 207-211.
A Giant Screen Display of 25.times.40 m.sup.2 (378.times.1200 Pixels) Capable of Automatically Compensating for the Discrepancy of Pixels and Resisting Ageing, Nikkei Electronics (1984.7.2), pp. 98-101.

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