Display device with discharge lamp

Details Display device with discharge lamp Display device with discharge lamp

1984-02-22

1987-02-24

Moore, David K.

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

315DIG4, 315DIG5, 315219, 313607, 313558, 313493, G09G 310, H01J 6106

Patent

active

046459790

ABSTRACT:
Disclosed herein is a discharge lamp type display device which comprises mainly at least one discharge lamp formed by a discharge tube in which inert gas is charged. The discharge lamp comprises a pair of electrodes one of which is locally provided within the discharge tube adjacent one end thereof and the other is formed of electrically conductive, light transmissive film deposited on the exterior surface of the discharge tube. The display device further comprises means for gradually increasing or decreasing the voltage or the frequency of discharge power to be supplied between the two electrodes of the discharge lamp, whereby illumination region of the discharge lamp is variably controlled.

REFERENCES:
patent: 2068741 (1937-01-01), Geffken et al.
patent: 2994012 (1961-07-01), Negrete
patent: 3727089 (1973-04-01), Chow
patent: 3882357 (1975-05-01), Nieuweboer et al.
patent: 3988633 (1976-10-01), Shurgan et al.
patent: 4009416 (1977-02-01), Lowther
patent: 4246515 (1981-01-01), Schauffele
patent: 4461978 (1984-06-01), Mikoshiba et al.
patent: 4492899 (1985-01-01), Martin
patent: 4529913 (1985-07-01), Brosillon

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