Patent ID: 8575592

Claim:
A Group III nitride based light emitting diode, comprising: a p-type Group III nitride based semiconductor layer; an n-type Group III nitride based semiconductor layer; and a Group III nitride based active region between the p-type Group III nitride based semiconductor layer and the n-type Group III nitride based semiconductor layer, the active region comprising a plurality of sequentially stacked Group III nitride based well layers; wherein the plurality of well layers comprises a first well layer having a first thickness and a second well layer having a second thickness, the second well layer is between the p-type Group III nitride based semiconductor layer and the first well layer, and the second thickness is greater than the first thickness; wherein, in response to being energized, the light emitting diode emits light having a full width half maximum (FWHM) that is less than about 30 nm.