Light emitting diode systems

Abstract

Light emitting diode systems are disclosed.

1 . A system comprising: 
 a light emitting device including:    a multi-layer stack of materials including a light generating region, and a first layer supported by the light generating region, a surface of the first layer being configured so that light generated by the light generating region can emerge from the light emitting device via a surface of the first layer, a shape of a surface of the multi-layer stack being rectangular and the surface of the first layer having a dielectric function that varies spatially according to a pattern; and    at least one electrical contact pad disposed along an edge of the surface of the first layer; and    a package having a first surface and a second surface opposite the first surface, the package including:    a plurality of plated regions for providing electrical contact to the light emitting device; and    a plurality of wire bonds connected between the plated regions and the at least one electrical contact pad.    
   
   
       2 . The system of  claim 1 , wherein the plurality of wire bonds includes at least about 5 wire bonds.  
   
   
       3 . The system of  claim 1 , wherein the plurality of wire bonds includes at least about 10 wire bonds.  
   
   
       4 . The system of  claim 1 , wherein the plurality of wire bonds includes at least about 25 wire bonds.  
   
   
       5 . The system of  claim 1 , wherein the plurality of wire bonds includes at least about 50 wire bonds.  
   
   
       6 . The system of  claim 1 , wherein an aspect ratio of the surface of the multi-layer stack is about 4×3.  
   
   
       7 . The system of  claim 1 , wherein the aspect ratio of the surface of the multi-layer stack is about 16×9.  
   
   
       8 . The system of  claim 1 , wherein the package further comprises a light emitting panel.  
   
   
       9 . The system of  claim 1 , wherein the package is mounted on a heat sink device.  
   
   
       10 . The system of  claim 1 , wherein the package is mounted on a core board.  
   
   
       11 . The device of  claim 1 , wherein the light emitting device is a light emitting diode.  
   
   
       12 . The device of  claim 11 , wherein the light emitting diode is a photonic lattice light emitting diode.  
   
   
       13 . The device of  claim 1 , wherein the light emitting device is a surface emitting laser.  
   
   
       14 . The system of  claim 11 , wherein an aspect ratio of the surface of the first layer is about 4×3.  
   
   
       15 . The system of  claim 11 , wherein an aspect ratio of the surface of the first layer is about 16×9.  
   
   
       16 . The system of  claim 12 , wherein an aspect ratio of the surface of the first layer is about 4×3.  
   
   
       17 . The system of  claim 12 , wherein an aspect ratio of the surface of the first layer is about 16×9.  
   
   
       18 . The device of  claim 1 , wherein the package further comprises a plurality of castellations to provide electrical contact from the first surface of the package to the second surface of the package.  
   
   
       19 . An optical display system, comprising: 
 a plurality of light emitting diodes, at least one of the plurality of light emitting diodes including a multi-layer stack of materials including a light generating region, and a first layer supported by the light generating region, a surface of the first layer being configured so that light generated by the light generating region can emerge from the light emitting device via a surface of the first layer, and the surface of the first layer having a dielectric function that varies spatially according to a pattern;    a microdisplay; and    a beam aggregation device disposed along an optical path from the microdisplay to the light emitting diodes, the beam aggregation device configured to combine light generated by the plurality of light emitting diodes.    
   
   
       20 . The optical display system of  claim 19 , wherein the beam aggregation device comprises an x-cube.  
   
   
       21 . The optical display system of  claim 19 , wherein the beam aggregation device is selected from the group consisting of prisms, dichroic mirrors, x-cubes, holographic gratings, and combinations thereof.  
   
   
       22 . The optical display system of  claim 19 , wherein the plurality of light emitting diodes includes at least one light emitting diode selected from the group consisting of red light emitting diodes, blue light emitting diodes, and green light emitting diodes.  
   
   
       23 . The optical display system of  claim 19 , wherein the plurality of light emitting diodes includes a red light emitting diode, a blue light emitting diode, and a green light emitting diode.  
   
   
       24 . The optical display system of  claim 19 , wherein at least one light emitting diode is a photonic lattice light emitting diode.  
   
   
       25 . The optical display system of  claim 19 , wherein at least one light emitting diode is rectangular in shape.  
   
   
       26 . The system of  claim 19 , wherein an aspect ratio of the plurality of light emitting diodes is about 4×3.  
   
   
       27 . The system of  claim 19 , wherein an aspect ratio of the plurality of light emitting diodes is about 16×9.  
   
   
       28 . The optical display system of  claim 19 , wherein the microdisplay has an area defined by a perimeter of the microdisplay and the light emitting diodes have an area defined by a perimeter of the light emitting diodes; wherein a ratio of the area of the microdisplay to the area of the light emitting diodes is from about 0.75 to about 1.1.  
   
   
       29 . The optical display system of  claim 19 , wherein at least one of the plurality of light emitting diodes is a non-lambertian light emitting diode.  
   
   
       30 . The optical display system of  claim 19 , wherein at least one of the plurality of the light emitting diodes is more collimated in the forward emitting direction than a lambertian light emitting diode.  
   
   
       31 . The optical display system of  claim 30 , wherein the at least one of the plurality of the light emitting diodes is a photonic lattice light emitting diode.  
   
   
       32 . The optical display system of  claim 19 , wherein the optical display system includes at least one liquid crystal on silicon (LCOS) panel.  
   
   
       33 . The optical display system of  claim 32 , wherein the LCOS panel is included in a high definition light engine.  
   
   
       34 . The optical display system of  claim 33 , wherein the high definition light engine is included in a television system.  
   
   
       35 . The optical display system of  claim 33 , wherein the television system is a rear projection television system.  
   
   
       36 . The optical display system of  claim 33 , wherein each light emitting diode of the plurality of light emitting diodes has a corresponding LCOS panel.  
   
   
       37 . The optical display system of  claim 33 , further comprising a device for filtering the polarization of the light emitted from the light emitting diodes.  
   
   
       38 . The optical display system of  claim 37 , wherein the device for filtering the polarization includes a polarizing beam splitter.  
   
   
       39 . The optical display system of  claim 33 , wherein the optical display system includes a device configured to change the polarization of light emitted by at least one of the plurality of LEDs.  
   
   
       40 . The optical display system of  claim 39 , wherein the device for changing the polarization is a half-wave plate.  
   
   
       41 . The optical display system of  claim 19 , wherein the optical display system includes at least one digital light processor (DLP) panel.  
   
   
       42 . The optical display system of  claim 19 , wherein the plurality of light emitting diodes comprises: 
 a first light emitting diode having a first emission wavelength; and    a second light emitting diode having a second emission wavelength, the second emission wavelength being between about 5 nm and about 100 nm greater than the first emission wavelength.    
   
   
       43 . The optical display system of  claim 19 , wherein the plurality of light emitting diodes comprises: 
 a first light emitting diode having a first emission wavelength; and    a second light emitting diode having a second emission wavelength, the second emission wavelength being between about 5 nm and about 50 nm greater than the first emission wavelength.    
   
   
       44 . The optical display system of  claim 19 , wherein the plurality of light emitting diodes comprises: 
 a first light emitting diode having a first emission wavelength; and    a second light emitting diode having a second emission wavelength, the second emission wavelength being between about 5 nm and about 40 nm greater than the first emission wavelength.    
   
   
       45 . The optical display system of  claim 19 , wherein the plurality of light emitting diodes comprises: 
 a first light emitting diode having a first emission wavelength; and    a second light emitting diode having a second emission wavelength, the second emission wavelength being between about 5 nm and about 30 nm greater than the first emission wavelength.    
   
   
       46 . The optical display system of  claim 19 , wherein the plurality of light emitting diodes comprises: 
 a first light emitting diode having a first emission wavelength; and    a second light emitting diode having a second emission wavelength, the second emission wavelength being between about 50 nm and about 100 nm greater than the first emission wavelength.    
   
   
       47 . The optical display system of  claim 19 , wherein the plurality of light emitting diodes comprises: 
 a first light emitting diode; and    a second light emitting diode, the second emission wavelength being between about 5 nm and about 40 nm greater than the first emission wavelength.    
   
   
       48 . The optical display system of  claim 19 , further comprising a package.  
   
   
       49 . The optical display system of  claim 48 , wherein the plurality of light emitting diodes comprises: 
 a first light emitting diode; and    a second light emitting diode, wherein the first and the second light emitting diodes are contained in the package.    
   
   
       50 . The optical display system of  claim 19 , further comprising: 
 a first package; and    a second package, wherein a first light emitting diode of the plurality of light emitting diodes is contained in the first package and a second light emitting diode of the plurality of light emitting diodes is contained in the second package.    
   
   
       51 . The optical display system of  claim 19 , wherein the plurality of light emitting diodes includes at least one red light emitting diode.  
   
   
       52 . The optical display system of  claim 19 , wherein the plurality of light emitting diodes includes at least one a blue light emitting diode.  
   
   
       53 . The optical display system of  claim 19 , wherein the plurality of light emitting diodes includes at least one green light emitting diode.  
   
   
       54 . The optical display system of  claim 19 , wherein the plurality of light emitting diodes includes at least one red light emitting diode, at least one a blue light emitting diode, and a plurality of green light emitting diodes.  
   
   
       55 . The optical display system of  claim 19 , wherein at least one optical component is disposed along an optical path from the microdisplay to the light emitting diode.  
   
   
       56 . An optical display system comprising; 
 a light emitting device including: 
 a multi-layer stack of materials including a light generating region, and a first layer supported by the light generating region, a surface of the first layer being configured so that light generated by the light generating region can emerge from the light emitting device via a surface of the first layer, and the surface of the first layer having a dielectric function that varies spatially according to a pattern; and  
   a cooling system configured so that, during use, the cooling system regulates a temperature of the light emitting diode.    
   
   
       57 . The optical display system of  claim 56 , wherein a shape of a surface of the multi-layer stack is rectangular