Light emissive display based on lightwave coupling
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United States of America Patent
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Oct 17, 2006
Grant Date -
Jun 9, 2005
app pub date -
Dec 8, 2003
filing date -
Dec 8, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A light emissive display having a specular waveguide that propagates short wavelength light and photoluminescent features adjacent to the waveguide that fluoresce, for example, in visible red, green, blue, and mixed colors when selectively coupled with the short wavelength light. The photoluminescent layers emit light primarily and, therefore, efficiently in the direction of an observer only. This light emissive display may be utilized as a planar light source, as patterned information signage, or as a re-configurable information display containing intensity modulated pixels. The light emissive display may be enhanced optically such that only a small portion of ambient light is reflected from the display while preserving the majority of emitted display luminance.
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