Flat electron control device utilizing a uniform space-charge cl

Details Flat electron control device utilizing a uniform space-charge cl Flat electron control device utilizing a uniform space-charge cl

1985-08-13

1988-01-12

Chatmon, Saxfield

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

313422, 313495, 313302, 3151693, 315366, G09G 310

Patent

active

047193883

ABSTRACT:
A flat visual display device is disclosed herein and includes a flat face plate having a front face and an opposite back face and electrically positive means on the latter which, as a result of the impingement of the electrons thereon, provides a visual image through the front face of the face plate. The device utilizes an arrangement including cathode means for establishing a uniformly dense space-charge cloud of free electrons within a planar band parallel with and rearward of the back face of the display face plate. Means including an apertured address plate disposed in spaced-apart confronting relationship with the back face of the face plate between the latter and the uniform space-charge cloud acts on the electrons within the cloud in a controlled way so as to cause the electrons acted upon to impinge on specific areas of the electrically positive back face plate means of the display face plate in order to produce a desired image through the face plate's front face.

REFERENCES:
patent: 2318418 (1943-05-01), Pierce
patent: 4121130 (1978-10-01), Gange
patent: 4341980 (1982-07-01), Noguchi et al.
patent: 4564790 (1986-01-01), Veith

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