Display backplanes with integrated electronics, photonics and color conversion components

A device comprising:

• a photonic integrated circuit;
• a display;
• an electronic integrated circuit;
• and
• a color conversion layer, located between the electronic integrated circuit and the display, wherein:
• the photonic integrated circuit is configured to receive ultraviolet (UV) light and transmit the UV light to the color conversion layer;
• the color conversion layer includes a plurality of color conversion modules;
• and
• the plurality of color conversion modules is configured to:
• convert at least a portion of the UV light into three colors of visible light;
• and
• illuminate the display using the three colors of visible light.

A method of illuminating a display, comprising:

• transmitting a first light beam having a first wavelength along a waveguide out-coupling the first light beam from the waveguide into a color conversion module, located within an optical cavity defined by a pair of spaced-apart reflectors;
• using the color conversion module, generating a second light beam having a second wavelength different from the first wavelength;
• and
• illuminating a display using the first light beam and the second light beam.