Phosphor Layer Arrangement for Use With Light Emitting Diodes

Abstract

Phosphor layer arrangement for use with light emitting diodes. In an aspect, a light emitting diode apparatus is provided that includes a least one light emitting diode, an encapsulation covering the at least one light emitting diode, a lens having a phosphor layer formed upon a bottom surface, the lens positioned to cover at least part of the encapsulation, and an air gap between the phosphor layer and the encapsulation. In an aspect, a light emitting diode lamp is provided that includes a package, a least one light emitting diode, an encapsulation covering the at least one light emitting diode, a lens having a phosphor layer formed upon a bottom surface, wherein the lens is positioned to cover at least part of the encapsulation, and an air gap between the phosphor layer and the encapsulation.

1 . A device comprising:
 at least one light emitting diode;   a lower layer formed proximate the at least one light emitting diode;   an upper layer formed upon the lower layer;   a plurality of conductors disposed between the upper layer and the lower layer and configured to provide current to the at least one light emitting diode; and   a reflector formed upon the upper layer and the lower layer.   
     
     
         2 . The device as recited in  claim 1 , wherein the reflector comprises two sloped reflector portions having the conductors therebetween. 
     
     
         3 . The device as recited in  claim 1 , further comprising a lens having a phosphor layer formed upon a bottom surface of the lens, wherein the lens is configured to receive light from the at least one light emitting diode. 
     
     
         4 . The lamp of  claim 3 , wherein the phosphor layer comprises an inorganic dye. 
     
     
         5 . The lamp of  claim 3 , wherein the phosphor layer has a uniform thickness. 
     
     
         6 . The lamp of  claim 3 , wherein the phosphor layer has a varying thickness. 
     
     
         7 . The lamp of  claim 3 , wherein the phosphor layer has a thickness in the range of approximately 5 to 500 microns. 
     
     
         8 . The lamp of  claim 3 , further comprising an encapsulation covering the at least one light emitting diode and an air gap between the phosphor layer and the encapsulation wherein the air gap has a thickness in the range of approximately 5 to 1000 microns. 
     
     
         9 . A device comprising:
 at least one light emitting diode;   a lower layer formed proximate the at least one light emitting diode;   an upper layer formed upon the lower layer;   a lead frame disposed between the upper layer and the lower layer; and   a stepped reflector formed upon the upper layer and the lower layer.   
     
     
         10 . A device comprising:
 at least one light emitting diode;   a lower layer of plastic formed proximate the at least one light emitting diode;   an upper layer of plastic formed upon the lower layer of plastic;   a plurality of conductors disposed between the upper layer of plastic and the lower layer of plastic; and   a stepped reflector formed upon the upper layer of plastic and the lower layer of plastic, the stepped reflector comprising two sloped reflector portions having a wire bonding region of the conductors therebetween.