Display element having substantially equally spaced human visual system (HVS) perceived lightness levels

摘要

A display element corresponds to a display of a pixel. The display element includes a number of sub-pixel regions. Each sub-pixel region has two states, including an on state and an off state. Each sub-pixel region has an area. The display has a defined area that is turned on to provide maximum lightness and that encompasses at least one of the areas of the sub-pixel regions. The ratio of the area of each sub-pixel region to the defined area of the display element is selected to provide for the display element having a number of substantially equally spaced human visual system (HVS) perceived lightness levels.