Patent ID: 7425471
Filing Date: 2008-09-16
Classification: B23K,H01L

Abstract:
1. A method for selectively irradiating structures on or within a semiconductor substrate using a plurality of laser beams, the structures being arranged in a row extending in a generally lengthwise direction, the method comprising: generating a first laser beam that propagates along a first laser beam axis that intersects the semiconductor substrate; generating a second laser beam that propagates along a second laser beam axis that intersects the semiconductor substrate; directing the first and second laser beams onto distinct first and second spots on respective distinct first and second structures in the row, the second spot being offset from the first spot by some amount in a direction perpendicular to the lengthwise direction of the row; and moving the first and second laser beam axes relative to the semiconductor substrate along the row substantially in unison in a direction substantially parallel to the lengthwise direction of the row.