A multi-chip light emitting diode (LED) package includes red, green, and blue LED chips directly bonded on a silicon substrate for a controlling integrated circuit (IC), and a carrier to which the controlling IC is attached. The multi-chip LED package has reduced volume and enhanced heat-radiating power....http://www.google.de/patents/US6858870?utm_source=gb-gplus-sharePatent US6858870 - Multi-chip light emitting diode package
