Methods and apparatuses for display systems which modulate a control electrode to cause an electro-optic layer to be reset to a state in which display data is not viewable. In one embodiment of the invention, a display system includes a first substrate having a first plurality of pixel electrodes for...http://www.google.ca/patents/US6104367?utm_source=gb-gplus-sharePatent US6104367 - Display system having electrode modulation to alter a state of an electro-optic layer
