Patent ID: 9455164
Filing Date: 2016-09-27
CPC Classification: B23K,H01L,H01S

Claim Text:
1. A laser annealing apparatus, comprising: a laser beam generator for providing a stable single-pulse laser beam; a cyclic delay unit for splitting the single-pulse laser beam into a plurality of pulsed laser beams; an optical module for converging one or more of the plurality of pulsed laser beams on a substrate; and a movable stage for providing the substrate with a movement in at least one degree of freedom, wherein the cyclic delay unit at least includes a delayer, a beam splitter unit and an internal control module; and the internal control module is configured to control a time delay of the delayer and a beam-splitting ratio of the beam splitter unit, and wherein the beam splitter unit includes a plurality of first beam splitters having different transmittances and a pivot; and the internal control module controls the beam-splitting ratio of the beam splitter unit by driving the pivot to switch the first beam splitter in use.