Electric lamp and discharge devices – Electrode and shield structures – Point source cathodes
Patent
1997-05-06
1999-11-09
Patel, Ashok
Electric lamp and discharge devices
Electrode and shield structures
Point source cathodes
313309, 313351, 313495, 313497, 313107, H01J 1924
Patent
active
059820829
ABSTRACT:
Cathodoluminescent field emission display devices feature phosphor biasing, amplification material layers for secondary electron emissions, oxide secondary emission enhancement layers, and ion barrier layers of silicon nitride, to provide high-efficiency, high-brightness field emission displays with improved operating characteristics and durability. The amplification materials include copper-barium, copper-beryllium, gold-barium, gold-calcium, silver-magnesium and tungsten-barium-gold, and other high amplification factor materials fashioned to produce high-level secondary electron emissions within a field emission display device. For enhanced secondary electron emissions, an amplification material layer can be coated with a near mono-molecular film consisting essentially of an oxide of barium, beryllium, calcium, magnesium or strontium. Use of a high amplification factor film as a phosphor biasing electrode, and variability of the phosphor biasing potential to achieve brightness or gray scale control are further described in the disclosure.
REFERENCES:
patent: 2992349 (1961-07-01), Cusano
patent: 3560784 (1971-02-01), Steel
patent: 4381474 (1983-04-01), Cusano
patent: 4540914 (1985-09-01), Maple
patent: 5438240 (1995-08-01), Cathey et al.
patent: 5461280 (1995-10-01), Kane
patent: 5509839 (1996-04-01), Liu
patent: 5534749 (1996-07-01), Ohoshi et al.
patent: 5646479 (1997-07-01), Troxell
patent: 5821685 (1998-10-01), Peterson
Dr. Jacques I. Pankove, "Electroluminescene", Spring-Verlag Berlin Heidelberg New York 1977, pp. 197-210.
Patel Ashok
St. Clair Intellectual Property Consultants, Inc.
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