Patent ID: 8236582

Claim:
A method for wafer scale fabrication of light emitting diode (LED) dies, comprising: forming LED devices over a growth wafer to form the device wafer, the LED devices comprising a n-type layer over the growth wafer, a light-emitting layer over the n-type layer, and a p-type layer over the light-emitting layer; bonding a carrier wafer to a p-side of the device wafer, the p-side of the device wafer being a side that is closer to the p-type layer than the n-type layer; removing the growth wafer from a n-side of the device wafer, the n-side of the device wafer being a side that is closer to the n-type layer than the p-type layer; bonding a window wafer to the n-side of the device wafer; removing the carrier wafer from the p-side of the device wafer singulating the device wafer into LED dies; separating the LED dies to create spaces between the LED dies; applying a reflective coating in the spaces between the LED dies; and breaking or separating the reflective coating in the spaces between the LED dies, wherein portions of the reflective coating remain on the lateral sides of the LED dies to control edge emission.