An apparatus having a light source, light pipe, and light conversion layer is disclosed. The light source includes a plurality of LED dies arranged in an array, each LED emitting light having an excitation wavelength, the light source emitting light within a cone of angles. The light pipe is positioned...http://www.google.es/patents/US7513669?utm_source=gb-gplus-sharePatente US7513669 - Light source for LCD back-lit displays
