Patent ID: 7719499

Claim:
A multi-color display including a pixel array, wherein the pixel array comprises: (a) an organic active layer comprising an organic active material that emits a first spectral distribution of visible light having a first color; (b) a transparent conducting layer containing a conducting material, wherein the organic active layer and the transparent conducting layer include portions that correspond to individual pixels and sub-pixels of the array; (c) one or more pairs of electrodes for selectively energizing sub-pixel areas of the organic active layer to generate an emission of visible light of said first spectral distribution; and (d) a substrate upon which said pixel array is formed, wherein different sub-pixels within individual pixels of said array have different optical thicknesses, optical thickness comprising the conducting material and the organic active material with a distinct thickness ratio of conducting material to organic active material for each sub-pixel within the individual pixels of the array, and wherein at least one sub-pixel within an individual pixel of said array has a selected color different from said first color due to at least one narrowed spectral band being selected out of said first spectral distribution as said emitted light is coupled out of the display through said at least one sub-pixel including a sub-pixel portion of said transparent conducting layer having a predetermined finite optical thickness.