ELECTROPHORETIC DISPLAY (EPID) EMPLOYING GREY SCALE CAPABILITY UTILIZING AREA MODULATION

摘要

An apparatus provides grey scale capability for an electrophoretic information display (10). The electrophoretic information display (10) is an XY addressable display with each XY coordinate indicative of a given column (23) and row (25) and defining a pixel. There are described means coupled to display for impressing upon the display a predetermined digital pattern to cause certain pixels in the display to be energized with respect to other pixels in the display where the combination due to the digital pattern causes a desired grey scale level to appear on a character or on the background of the display.