Ring or disc optical resonators are provided with random or coherent
corrugation on a top surface to cause optical power to be radiated in a
desired direction by light scattering. The resonators may be positioned
proximate a waveguide, either in-plane or inter-plane with the waveguide.
The resonators are used in a polymeric photonic display. Light at each
fundamental color is generated by light emitting diodes, such as organic
light emitting diodes (OLEDs). The light is coupled into waveguides that
cross an array of diffractive elements, such as the resonators, each
combined with an optical modulator, such as a polymer electro-optic (EO)
modulator. The modulator allows light from the waveguides to reach the
diffractive elements. Control lines run across the waveguides, and
provide control signals to the modulators, allowing one row of
diffractive elements at a time to receive light from the waveguides. The
rows are scanned and synchronized with light generated by the OLEDs.