Patent ID: 6552704
Filing Date: 2003-04-22
Classification: G06F,G09G,H04N

Abstract:
A method of controlling an active matrix display having an array of transistor circuits formed in a first plane, each transistor circuit being connected to a pixel electrode in an array of pixel electrodes, and a counterelectrode panel extending in a second plane that is parallel to the first plane, there being a layer of liquid crystal between the first plane and the second plane, the method comprising:selecting a high or a low common voltage with a switching circuit under the direction of a display control circuit connected to the active matrix display; applying the selected common voltage to the counter electrode panel; actuating the transistor circuits in the array to scan an image into the matrix display with the display control circuit; flashing a light source to illuminate the image with the display control circuit; switching the common voltage applied to the counterelectrode panel to erase the image with the switching circuit; inverting image data after the image has been scanned into the matrix display with a second switching circuit, and scanning the inverted image into the matrix display; and controlling the timing of the actuating, flashing, switching, and inverting with a timing circuit.