Electrophoretic display panel with reduced power consumption

Abstract

This invention relates to an electrophoretic display panel (1), for displaying an image corresponding to image information, comprising a plurality of pixels (4), each containing an amount of an electrophoretic material, an electrode arrangement (8, 9) associated with each pixel (4) for receiving a potential difference as defined by an update drive waveform (12); and pixel drive means (10), for controlling said update drive waveform (12) of each pixel (4). The display panel further comprises an image information analyser (11) arranged to analyse the image information for a current image frame (13) to be displayed by the display panel with the image information of a previous image frame (14), the image information analyser (11) being arranged to control said pixel drive means (10) so as to, at least in a portion of the display, only update a subgroup of pixels (4) which, as analysed by the image information analyser (11) is arranged to display a greyscale in the current image frame (13) which differs from the greyscale displayed in the previous image frame (14).

Dependencies are inferred from the claim text.