Solid state white light emitter and display using same

摘要

A light emitting assembly comprising a solid state device coupleable with a power supply constructed and arranged to power the solid state device to emit from the solid state device a first, relatively shorter wavelength radiation, and a down-converting luminophoric medium arranged in receiving relationship to said first, relatively shorter wavelength radiation, and which in exposure to said first, relatively shorter wavelength radiation, is excited to responsively emit second, relatively longer wavelength radiation. In a specific embodiment, monochromatic blue or UV light output from a light-emitting diode is down-converted to white light by packaging the diode with fluorescent organic and/or inorganic fluorescers and phosphors in a polymeric matrix.

主权项

1. A display, comprising a multiplicity of light-emitting devices, each light-emitting device comprising: at least one single-die semiconductor light-emitting diode (LED) coupleable with a power supply to emit blue light, and a down-converting luminophoric medium arranged for exposure to said blue light, and which in exposure to said blue light responsively emits a longer wavelength, polychromatic radiation, so that each light-emitting device produces a white light output, wherein said white light output comprises blue light from said blue light emitted by the LED and said longer wavelength, polychromatic radiation emitted by the down-converting luminophoric medium, and wherein the down-converting luminophoric medium comprises an inorganic luminophor.