Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Patent
1995-04-25
1998-09-08
O'Shea, Sandra L.
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
313422, 313495, 313496, H01J 2970
Patent
active
058049169
ABSTRACT:
A flat picture tube including a glass vessel which is internally evacuated, a heater installed inside the glass vessel for emitting heat electrons, a plurality of anodes extended in one direction and disposed at a constant interval on one inner plane of the glass vessel for absorbing the heat electrons, a plurality of fluorescent units disposed on the plurality of anodes in a matrix shape for radiating depending on heat electrons absorbed to the anodes, and a plurality of control grids extended perpendicularly to the anode extended direction and disposed in a constant interval for controlling the absorption of the heat electrons toward the anodes operates in a matrix digital method and does not necessitate an electron gun nor deflection yokes, thereby reducing the volume thereof. In the case of a 20 inch picture tube, the maximum thickness thereof is only 5 cm so that it can be adopted for a wall television. Also, since a high-voltage power is not required, the overall power consumption is lowered. Also, the resolution is increased owing to its 2100 horizontal lines, compared with a conventional 19 inch color picture tube having 600 lines.
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O'Shea Sandra L.
Patel Vip
Youare Electronics Co.
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