Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1998-08-31
2000-10-17
Lao, Lun-Yi
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 75, 345208, 313339, G09G 300
Patent
active
061338931
ABSTRACT:
A field emission display having an improved operational life. In one embodiment of the present invention, the field emission display comprises a plurality of row lines, a plurality of column lines, and a plurality of electron emissive elements disposed at intersections of the plurality of row lines and column lines, a column driver circuit, and a row driver circuit. The column driver circuit is coupled to drive column voltage signals over the plurality of column lines; and, the row driver circuit is coupled to activate and deactivate the plurality of row lines with row voltage signals. Significantly, according to the present invention, operational life of the field emission display is substantially extended when the electron emissive elements are intermittently reverse-biased by the column voltage signals and the row voltage signals. In another embodiment, the row driver circuit is responsive to a SLEEP signal. The row driver circuit, upon receiving the SLEEP signal, drives a sleep-mode voltage over the row lines to reverse-bias the electron emissive elements.
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Curtin Christopher J.
Hansen Ronald L.
Maslennikov Igor L.
Spindt Christopher J.
Urbon Dennis M.
Candescent Technologies, Inc.
Lao Lun-Yi
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