Patent ID: 8592838

Claim:
A low voltage display or indicator system consisting essentially of: a plurality of independently controllable pixels, each pixel consisting of: red, green and blue up-converters each having a corresponding up conversion material containing a Yb Co-dopant to generate red, green or blue light when excited; three independent semiconductor light sources respectively and directly coupled with the red, green and blue up-converters; the three semiconductor light sources emitting an approximately 975 nm wavelength light to respectively and directly excite the Yb co-dopant in the up conversion material in the respectively red, green and blue up-converters to emit a corresponding up-converted red, green and blue emission; and at least one spatial light modulator for modulating one of the semiconductor light source emission and the up converted emission; an addressing structure for selectively controlling and addressing the semiconductor light sources in the plurality of independently controllable pixels to excite emission from the red, green and blue up-converters for each pixel to generate red, green, blue, or combination thereof; and a power source connected with the semiconductor light sources in the plurality of independently controllable pixels for powering the low voltage display or indicator system.