Patent ID: 8313961

Claim:
An apparatus for manufacturing an LED comprising: a laser beam source for emitting laser beam; a mesh-typed mask having a plurality of apertures for selectively passing the laser beam; and an imaging lens for forming a plurality of beam spots by focusing the laser beam passing through the mesh-typed mask, so as to separate a substrate from a semiconductor layer formed on the substrate, wherein each of the apertures is formed in a circular shape and a size of the aperture is adjustable so as to form the beam spot in a circular shape satisfying the following formula: 1.67×10 3 ×T×E d −1 <R<20×10 3 ×T×E d −1 wherein R represents a semi-diameter (m) of the circular shape, T represents a thickness (m) of the semiconductor layer, and E d represents an energy density (J/cm 2 ) of the beam spot.