Integrated display panel utilizing field-effect transistors

Claim 1

A display panel comprising in combination: a substrate of electrical insulating material; elemental light cell units mounted in rows and columns on said substrate; each of said light cell units being comprised of: a. first, second, third and fourth parallel spaced conductors mounted on said substrate, b. a layer of semiconductor material overlying at least a portion of said first and second conductors, c. a layer of insulating material overlying said semiconductor material, and spaced areas of conductive material mounted on said layer of insulated material so as to form the gate electrodes of a dual gate field effect transistor, d. a layer of insulating material on said third conductor and a layer of conductive material which is a first extension of said second conductor, mounted on a portion of said latter layer of insulating material so as to form a storage capacitor, e. a layer of semiconductor material mounted on said substrate and extending over the adjacent edges of said third and fourth conductors, f. a layer of insulating material mounted on the layer of semiconductor material described in (e) above, g. a conductive layer, which is a second extension of said second conductor mounted on said latter layer of insulatiNg material so as to form a single gate field effect transistor, h. a layer of electroluminescent material mounted on said fourth conductor, and a layer of conductive material mounted on said electroluminescent material so as to form a light cell, i. means coupled to said spaced conductive areas described in (c) above causing the semiconductive material overlying said first and said second conductors to be capable of passing current during predetermined periods of time, j. means coupling said third conductor to a fixed reference potential, k. power supply means coupled to said layer of conductive material mounted on said electroluminescent material described in (h) above, and l. a source of video signals coupled to said first conductor whereby the intensity of the light emerging from said electroluminescent material is related to said video signal voltage during said predetermined time.