Patent ID: 8900801

Claim:
A method for producing a light emitting diode device, comprising a stack of layers comprising a light producing layer the light producing layer not being the top or bottom layer of the stack, the method comprising: providing a light emitting diode device comprising a stack of layers, the stack of layers comprising a light producing layer, wherein the light producing layer is not a top layer or a bottom layer of the stack; and subjecting the top layer or the bottom layer of the stack to a texturization, whereby light extraction efficiency of the LED is enhanced, wherein the texturization comprises producing, on a top surface or on a bottom surface of the stack a plurality of surface features, the surface features being arranged according to an irregular pattern defined by starting from: a regular pattern of features and subjecting each feature of the regular pattern to a deviation from a location in the regular pattern, wherein the deviation is in a random direction and/or has a random amplitude; or a regular pattern of features of equal size and equal shape and subjecting one or more dimensions of each feature of the regular pattern to a random deviation from the one or more dimensions of the features of equal size, wherein an amplitude of the deviation is selected according to a predefined statistical distribution.