| 摘要 |
<p>The present invention is related to a method for producing a LED device, comprising a stack of layers (2) comprising a light producing layer (3) said light producing layer not being the top or bottom layer of said stack, the method comprising a texturization step, wherein a layer at the top or bottom of the stack is subjected to a texturization aimed at enhancing the light extraction efficiency of the LED, wherein said texturization comprises the step of producing on said top or bottom surface a plurality of surface features (10), said surface features being arranged according to a pattern defined by starting from a regular pattern of features and subjecting each feature of said regular pattern to a deviation from the location in the regular pattern, said deviation being in a random direction and/or having a random amplitude. According to another embodiment, a random deviation is applied to one or more dimensions of the features in the regular pattern.</p> |
