Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Patent
1999-06-02
2000-09-12
Wong, Don
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
3151694, 315282, 315224, 315291, 315289, G05F 100
Patent
active
06118229&
ABSTRACT:
A plasma display including a bulb having an outer and an inner bulb portion hermetically connected with the outer bulb portion to thereby create a hermetically sealed chamber and an inventive circuit to provide electricity to create illuminating arcs of plasma in an inert atmosphere in the sealed chamber. The inner bulb portion has an inner surface and an outer surface facing the sealed chamber, and there is a conductive coating on the inner surface. An inventive discharging gas is infused into the sealed chamber and electricity of varying voltage is supplied through the circuit to the conductive coating to cause visible plasma arcs of electricity between the inner and outer bulb portion. In a first embodiment, the outer bulb portion is preferably spherical, and the inner bulb portion is preferably tubular and contained within the outer bulb portion with the conductive coating being located substantially in the center of the spherical outer bulb portion. In a second embodiment, the outer bulb portion is U-shaped and the inner bulb portion is on the inner curve of the U-shape such that the conductive coating is at substantially the apex of the inner curve of the inner bulb portion of the U-shape.
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Dinh Trinh Vo
Wong Don
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