Electrostatic video display drive circuitry and displays incorporating same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 13, 2001
Issued Date -
N/A
app pub date -
Apr 25, 2000
filing date -
May 22, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a low-cost, programmable electronically actuated, continuous use traffic sign including a pixellated display matrix, the display matrix being electronically actuatable to display a desired traffic information image display suitable for roadside and other vehicular use where it may be clearly viewed by direct sunlight during the day and by illumination at night. A preferred display is electrostatically actuated for low power requirements and comprises pixels which have spiral rollout shutters. The display can be remotely programmed and controlled, via a modem, and may be solar or battery powered, powered by a local power network or from a combination of the foregoing. Low-cost film technology manufacturing methods are also described.
First Claim
Family
International Classification(s)
Cited Art Landscape
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