Patent ID: 8405303

Claim:
An electroluminescent device, comprising: at least first and second radiation emitter devices arranged on a common substrate, the first and second radiation emitter devices including a first active layer and a second active layer of organic material for generating radiation, respectively; wherein the first radiation emitter device includes a first electrode over which the first active layer is formed and the second radiation emitter device includes a second electrode over which the second active layer is formed; wherein the first radiation emitter device includes a third electrode formed over the first active layer and the second radiation emitter device includes a fourth electrode formed over the second active layer; isolation means of dielectric material being interposed between the first active layer, first electrode, and third electrode and the second active layer, second electrode, and fourth electrode to electrically isolate the first active layer and the first and third electrodes from the second active layer and the second and fourth electrodes; and wherein the isolation means include a layer of dielectric material such as to define first and second cavities associated with the first and second radiation emitter devices, respectively, the layer of dielectric material including a partition wall of the cavities having, a vertical portion in contact with side surfaces of the first active layer and the first and third electrodes and side surfaces of the second active layer and the second and fourth electrodes; an overlapping portion that overlaps a peripheral portion of each of the first and second electrodes; and wherein the partition wall has a greater thickness than a height of the first electrode, first active layer, and third electrode and a height of the second electrode, second active layer, and fourth electrode, and wherein the thickness and the height are measured from the surface of the support substrate according to a radiation emission major axis.