Patent ID: 7439673

Claim:
An image display panel comprising a matrix of bi-stable electroluminescent cells that can be either in an “on” state or in an “off” state, comprising; a front array of electrodes and a rear array of electrodes, the electrodes of the front array crossing the electrodes of the rear array at each bi-stable electroluminescent cell of said matrix of bi-stable electroluminescent cells, wherein each bi-stable electroluminescent cell of said matrix of bi-stable electroluminescent cells comprises at least one electroluminescent element and a photoconductive element that are electrically connected in series having two outermost terminals, one of the outermost terminals being connected to an electrode of said front array and the other one of the outermost terminals being connected to an electrode of said rear array, wherein the at least one electroluminescent element includes at least one electroluminescent layer and the photoconductive element includes a photoconductive layer, means for optical coupling, at each bi-stable electroluminescent cell of said matrix of bi-stable electroluminescent cells, the at least one electroluminescent layer of the at least one electroluminescent element and the photoconductive layer of the photoconductive element, and wherein each bi-stable electroluminescent cell of said matrix of bi-stable electroluminescent cells includes a first shunt element electrically connected in parallel with the at least one electroluminescent element and wherein the shunt element has a resistance which does not depend on illumination.