ELECTRONIC PAINT WITH CHARGE MEMORY

摘要

The invention provides an electronic paint (10) comprising a lower conductive layer (20), a layer of electrophoretic ink (22) disposed on the lower conductive layer (20), ,a plurality of floating electrodes (24) disposed on the layer of electrophoretic ink (22), a photoconductive layer (26) disposed on the plurality of floating electrodes (24), and an upper conductive layer (28) disposed on the photoconductive layer (26). Light (36) directed onto a portion of the photoconductive layer (26) and a bias voltage (30) applied to the upper conductive layer (28) allow a transfer of a predetermined charge (32) onto at least one floating electrode (24). Activation of the electrophoretic ink (22) is based on the predetermined charge (32) on the floating electrode (24) and a reference voltage (34) that is applied to the lower conductive layer (20).