Electric lamp and discharge devices – Cathode ray tube – Beam deflecting means
Patent
1993-02-01
1996-07-30
Yusko, Donald J.
Electric lamp and discharge devices
Cathode ray tube
Beam deflecting means
313495, 313496, 313497, 313309, 313336, H01J 2970
Patent
active
055414737
ABSTRACT:
A grid which controls electron flow, placed between a field emitter cathode and fluorescent anode in a flat cathode ray tube improves focusing, and reduces the switching voltage necessary to stop electron flow. The focusing capabilities of the grid enable increased distance between the cathode and anode, permitting higher anode voltage and use of more efficient phosphors. With the grid, electron flow on/off addressing can be done with drivers operating at less than 30 V, thereby reducing capacitive power loss over prior art addressable arrays and permitting use of inexpensive CMOS control circuitry. The grid's switching capabilities enable the use of a simplified field emitter cathode structure with resistive gate films which increase emitter reliability, emitter life, and, for cathode ray tube displays, the uniformity of the display.
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Duboc, Jr. Robert M.
Lovoi Paul A.
MacPherson Alan H.
Meetin Ronald J.
Patel Nimesh
Silicon Video Corporation
Yusko Donald J.
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