LED AND METHOD OF ASSEMBLING LED

摘要

PROBLEM TO BE SOLVED: To efficiently improve the coupling efficiency of light generated by an LED to the exterior.SOLUTION: An LED includes: a second layer 14 of a semiconductor material forming a p-n diode together with a first layer 13 of the semiconductor material deposited on a substrate 112; a light emitting region 18 provided between the first and second layers and generating light; a first electrode 15 deposited on the second layer; and a second electrode 16 electrically connected with the first layer. Protrusions 118 and/or depressions 119 for scattering or diffracting light are provided on an upper surface of the substrate 112. A roughened surface of the upper surface of the second layer can be also used.