H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/165
H01J 31/12 (2006.01)
Patent
CA 1265574
ABSTRACT OF THE DISCLOSURE 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 posi- tive back face plate means of the display face plate in order to produce a desired image through the face plate's front face.
514657
Smart & Biggar
Source Technology Corporation
LandOfFree
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