Multi-cup LED assembly
AssigneeBridgelux, Inc.
InventorsWei Shi, Alex Shaikevitch, Shanquan Bao, Michael Solomensky
Life of this patent
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Abstract
A substrate for an LED assembly can have a plurality of cups formed therein. At least one cup can be formed within another cup. The cups can be co-axial with respect to one another, for example. A machined surface of the substrate can enhance reflectivity of the LED assembly. A transparent and/or non-global solder mask can enhance reflectivity of the LED assembly. A transparent ring can enhance reflectivity of the LED assembly. By enhancing reflectivity of the LED assembly, the brightness of the LED assembly can be increased. Brighter LED assemblies can be used in applications such as flashlights, displays, and general illumination.
Claims19
A device, comprising:
- an LED assembly comprising:
- a substrate;
- at least three cups comprising a first cup, a second cup, and a third cup formed in the substrate and arranged so that each cup except the first cup is formed in a floor of a preceding cup generally co-axial with respect to one another and each of the at least three cups includes a floor and a wall surface;
- a cover layer formed on the substrate in the first cup and the second cup, wherein the cover layer is formed on the floor and the watt surface of each of the first cup and the second cup but is not formed on the substrate in the third cup such that an entire portion of the substrate is exposed along the floor and the wall surface of the third cup;
- and
- at least one LED chip disposed on the exposed portion of substrate on the floor of the third cup.
Dependencies are inferred from the claim text.