Patent ID: 8022623

Claim:
An illuminated panel, comprising: a first device, wherein the first device comprises: a cathode, wherein the cathode is electrically contiguous; a layer comprising an electroluminescent organic material in electrical contact with the cathode; and an anode, wherein the anode is electrically contiguous, and wherein the anode is in electrical contact with the layer, wherein at least one of the cathode or the anode is patterned to define more than one electrode region each having a lateral dimension of less than about 5000 micrometers and thereby define light emitting regions within the layer when energized; and a second device, wherein the second device comprises: a second cathode, wherein the second cathode is electrically contiguous; a second layer comprising a second electroluminescent organic materials in electrical contact with the second cathode; and a second anode, wherein the second anode is electrically contiguous, and in electrical contact with the second layer, wherein the first device is joined to the second device in a stacked configuration to form a multilayer structure, and wherein the first device and the second device are configured to be individually energized.