Patent ID: 6317108
Filing Date: 2001-11-13
Classification: G02B,G09F,G09G,H01G,H04N

Abstract:
A 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 wherein the display matrix comprises:a) an array of pixels, each pixel having a shutter and each shutter comprising a movable element formed of solid material movable between a closed, light-blocking position extending across the pixel and an open, light-transmitting position wherein the shutter provides a first display surface having a first appearance to a viewer in the closed, extended position of the shutter;b) a second display surface behind each shutter with respect to the viewer and providing a second appearance to the viewer in the open, light-transmitting position of the shutter;wherein the first appearance of each pixel contrasts visually with the second appearance of the pixel, wherein the desired image comprises a composition of open and closed shutters and wherein the display is programmable to change the shutter composition to display the desired traffic information image.