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US 2014/0151740 A1Published application
Micro-Structure Phosphor Coating
AssigneeTSMC Solid State Lighting Ltd.
InventorsChi Xiang Tseng, Hsiao-Wen Lee
Life of this patent
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Abstract
An optical emitter includes micro-structure phosphor coating on a light-emitting diode die mounted on a package substrate. The micro-structures are transferred onto a micro-structure phosphor coating precursor by patterning and curing the precursor or by curing the precursor through a mold. The micro-structures are half spheroids, three-sided pyramids, or six-sided pyramids.
Claims20
An optical emitter comprising:
- a package substrate;
- a light-emitting diode (LED) die mounted on the package substrate, the LED die comprising an LED;
- a layer of micro-structure phosphor coating on a surface of the LED die opposite from the package substrate;
- and a lens over the layer of micro-structure phosphor coating and the LED die, the lens attached to the package substrate.
1 more element
An optical emitter, comprising:
- a package substrate;
- a light-emitting diode (LED) disposed over the package substrate;
- a plurality of phosphor micro-structures disposed over the LED, wherein each of the phosphor micro-structures have a non-planar shape;
- and
- a lens disposed over the package substrate, wherein the LED and the phosphor micro-structures disposed thereover are housed within the lens.
2 more elements
An optical emitter, comprising:
- a package substrate;
- a conductive layer disposed over the package substrate;
- a light-emitting diode (LED) die bonded to the package substrate through the conductive layer;
- a phosphor layer disposed over the LED die, wherein the phosphor layer contains a plurality of phosphor elements that are each shaped as a half spheroid or as a multi-sided pyramid;
- and
- a lens disposed over the package substrate, wherein the LED die and the phosphor layer are located underneath the lens.
3 more elements
Dependencies are inferred from the claim text.