Patent ID: 7875533
Filing Date: 2011-01-25
Classification: H01L

Abstract:
1. A method comprising: providing light emitting diode (LED) layers grown on a growth substrate, the LED layers comprising a first epitaxial layer of a first conductivity type, a second epitaxial layer of a second conductivity type, and an active layer disposed between the first and second epitaxial layers, wherein a primary emission surface on a first side of the first epitaxial layer is substantially parallel to the active layer, the LED layers forming at least one individual LED; providing a package substrate comprising a support surface having one or more electrical contact pads thereon for electrical connection to the first and second epitaxial layers; placing the LED layers attached to the growth substrate on the package substrate such that the second epitaxial layer is facing a contact pad on the package substrate; introducing an underfill material in a void between the LED layers and the package substrate; bonding the second epitaxial layer to the first contact pad using a metal interface disposed between the package substrate and the second epitaxial layer; and removing the growth substrate.