Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Patent
1999-05-13
2000-08-29
Day, Michael H.
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
313496, H01J 162, H01J 6304
Patent
active
061113530
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.
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Dr. Jacques I. Pankove, "Electroluminescence", Spring-Verlag Heidelberg New York 1977, pp. 197-210, No Month Provided.
Day Michael H.
Smith Michael J.
St. Clair Intellectual Property Consultants, Inc.
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