Field emission type flat display apparatus

Details Field emission type flat display apparatus Field emission type flat display apparatus

1994-10-11

1995-12-05

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313495, 313104, 313103CM, 313105CM, H01J 4300

Patent

active

054732190

ABSTRACT:
A flat display apparatus has a substrate, a plurality of pointed cathodes formed on the substrate, a planar anode facing toward the cathodes via a vacuum space, and a light emitting layer on the side of the anode which is opposite from the cathodes. The anode has a plurality of projections in positions corresponding to the cathodes. The anode projections reduce electron scatter to improve light emission from the light emitting layer. In another embodiment of the flat display apparatus, a primary electron source and a plurality of secondary electron sources connected to bias voltages are disposed on the substrate and positioned relative to one another in an alternately staggered vertical positional sequence toward a light emitting member so that electrons are successively amplified. In a further embodiment of the flat display apparatus, wherein a plurality of electron sources are disposed on the substrate, an electrode faces toward the electron sources, and a light emitting member is provided on a side of the electrode opposite and facing away from the substrate, the electron sources include a primary electron source for generating primary electrons and a secondary electron source for amplifying primary electrons from the primary electron source due to a Malta effect.

REFERENCES:
patent: 3665241 (1972-05-01), Spindt et al.
patent: 4352042 (1982-09-01), Lorenz et al.
patent: 4763187 (1988-08-01), Biberian
patent: 4973888 (1990-11-01), Morimoto et al.
patent: 5030921 (1991-07-01), Kane

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