The invention includes providing a display by moving a colorant particle, having an electric charge, inside a channel of a body in a direction that is substantially parallel to a direction of extension of the channel and a direction of incoming illumination rays. The colorant particle can be moved between...http://www.google.fr/patents/US7170470?utm_source=gb-gplus-shareBrevet US7170470 - Methods and apparatus for subjecting an element to an electrical field
Methods and apparatus for subjecting an element to an electrical field
