Communications: electrical – Systems – Portable self-contained
Patent
1976-08-23
1978-05-23
Curtis, Marshall M.
Communications: electrical
Systems
Portable self-contained
340166EL, 350333, 357 42, 340336, 365119, G06F 314
Patent
active
040913759
ABSTRACT:
A passive display device providing high resolution and contrast and very fast response time for presenting and erasing information is formed from a thin layer of a crystal material capable of forming color centers in an electric field, an electron injection source by tunnel effect which includes a first thin metal layer, an insulation barrier, and a very thin metal layer, and an electrode array for selectively controlling the path of the electrons passing through the very thin metal layer, by tunnel effect, into the crystal material, upon application of a suitable voltage across the metal layers, in accordance with the information to be displayed.
A process for displaying information using the passive display device requires applying a voltage across the metal layers of the electron injection source to create an electron flow, by tunnel effect, across the conduction band of the insulator and beyond the very thin metal layer to the crystal color center material, and simultaneously providing a voltage between the electrode array on the opposed surface of the crystal material and the very thin metal layer, the latter voltage causing acceleration of the electrons toward selective sites forming color centers in the crystal material in accordance with the information to be displayed.
REFERENCES:
patent: 3720926 (1973-03-01), Schneider
patent: 3771150 (1973-11-01), Schneider
patent: 3792465 (1974-02-01), Collins et al.
patent: 3962714 (1976-06-01), King
Curtis Marshall M.
Laboratoires de Physicochimie Appliquee, ISSEC S.A.
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