Display arrangements

Details Display arrangements Display arrangements

1979-10-03

1981-01-06

Trafton, David L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

313497, 313513, 340781, G08B 536

Patent

active

042439868

ABSTRACT:
A display arrangement is provided with two opposite display surfaces so that a display can be seen from both directions. The display arrangement consists of an evacuated envelope and fluorescent screens are provided at both display surfaces which are irradiated by a common electron emissive cathode. This enables a display arrangement to be provided which is very thin, but which is capable of providing very bright displays in an economical manner. Segmented mesh electrodes are positioned adjacent to both fluorescent screens so as to selectively control the regions of the screen which fluoresce, and this enables the nature of the display to be readily altered.

REFERENCES:
patent: 3864593 (1975-02-01), Kasano
patent: 4047073 (1977-09-01), Kishino
patent: 4103206 (1978-07-01), Eto et al.
patent: 4142126 (1979-02-01), Dubois
patent: 4149147 (1979-04-01), Kishino
patent: 4156239 (1979-05-01), Hirano et al.
patent: 4162422 (1979-07-01), Morimoto et al.
patent: 4164683 (1979-08-01), Nakamura et al.

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