A screen display device (1) with a plurality of display elements (2), the display elements (2) comprising: (a) at least one display chamber (5) for containing display fluid; (b) at least storage chamber (6) in fluid communication with the display chamber (5); (c) the fluid being movable between the display chamber (5) and the storage chamber (6); (d) control means (7) for controlling fluid movement between the display chamber (5) and the storage chamber (6); and (d) a display screen (3); wherein each display chamber (5) is arranged to provide an image of fluid in the display chamber (5) through the display screen (3). An electronic device having a screen display device (1) according to the invention is also disclosed.
