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US 7,319,246 B2Granted
Luminescent sheet covering for LEDs
AssigneeLumination LLC
InventorsThomas F. Soules, Chen-Lun Hsing Chen, Emil Radkov
Life of this patent
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Abstract
A lighting apparatus comprising at least one light emitting diode is disposed on an interconnect board to emit ultraviolet or blue radiation. A polymeric layer including a luminophor is disposed about the lighting apparatus to convert at least a portion of the radiation emitted from the LED into visible light. The polymeric layer is shrinkable to conform to a shape enclosing the light emitting diode.
Claims27
A lighting apparatus, comprising:
- at least one light emitting diode which is disposed on an interconnect board to emit ultraviolet or blue radiation, which light emitting diode includes:
- a first surface to emit radiation, and
- a second surface disposed opposite the first surface;
- and
- a polymeric sheet including a luminophor which is disposed about the lighting apparatus to convert at least a portion of the radiation emitted from the light emitting diode into visible light, the polymeric sheet comprised of polymer molecules that are in a state between stretched and natural.
2 more elements
An illumination device comprising:
- a light-transmissive display;
- a backlight arranged to illuminate the light-transmissive display, the backlight including:
- at least one light emitting diode to emit radiation;
- a reflector to reflect the emitted radiation into the light-transmissive display, the reflector including a reflector cavity defining an air gap above the light emitting diode;
- and
- a luminescent shrink-wrap which is disposed to cover the reflector cavity and convert the reflected radiation into visible light, which shrink-wrap includes:
- a first surface disposed proximately to the light emitting diode to receive the emitted radiation, and
- a second surface disposed distally from the light emitting diode to emit visible light;
- wherein the shrink-wrap comprises polymer molecules that are in a state between stretched and natural polymer.
6 more elements
Dependencies are inferred from the claim text.