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US 9,287,475 B2Granted
Solid state lighting component package with reflective polymer matrix layer
AssigneeCree, Inc.
InventorsPeter Andrews, Joseph Clark, Harsh Sundani
Life of this patent
Estimating the term…
Abstract
A solid state lighting component comprising a layer having high reflectivity and/or scattering properties, the layer positioned about a solid state lighting component, and manufacturing methods of making same is disclosed. A method of increasing the luminous flux of the solid state lighting component, is also provided.
Claims20
A solid state lighting component comprising:
- a substrate having a top surface, the top surface of the substrate comprising
- a first region comprising a die pad;
- a second region comprising a light absorbing feature, the second region being spaced apart from and within the first region of the top surface of the substrate;
- and
- a three dimensional near field reflective structure comprising a first shape positioned within the first region, the first shape at least partially surrounding the die pad, and a second shape positioned within the second region at least partially covering the light absorbing feature, the second shape positioned within the second region being spaced apart from the first shape;
- an LED element,
- wherein the first and the second shapes comprise polydimethylsiloxane, polyphenylsiloxane, or blends thereof, and an amount of titanium dioxide material sufficient for scattering and/or reflecting emitted light emitted from the LED element, reduce absorption of the emitted light, and combinations thereof,
- wherein the LED element is part of an array of LED elements, at least one of the first and the second shapes at least partially surrounding one or more individual LED elements of the array of LED elements and/or the array of LED elements,
- the polydimethylsiloxane, polyphenylsiloxane, or blends thereof being substantially transparent and substantially non-absorbing to light emitted by the LED element.
6 more elements
A solid state lighting component comprising an optical media;
- an array of LED elements;
- and
- a reflecting dam configured with a concave exterior surface;
- and a convex exterior surface that contours with at least a portion of an interior surface of the optical media, and the optical media is adjacent the convex exterior surface of the reflecting dam, the concave exterior surface of the reflecting dam configured for scattering and/or reflecting emitted light from one or more of the LED elements, the reflecting dam having a three dimensional structure at least partially surrounding one or more individual LED element of the array of LED elements, the reflecting dam comprising a polymer matrix of polydimethylsiloxane, polyphenylsiloxane, or blends thereof, and a titanium dioxide material, the polymer matrix being substantially transparent and substantially non-absorbing to light emitted by the LED element.
1 more element
Dependencies are inferred from the claim text.