Electric heating – Metal heating – By arc
Reexamination Certificate
2005-02-04
2009-12-15
Elve, M. Alexandra (Department: 3742)
Electric heating
Metal heating
By arc
C219S121690, C219S121670
Reexamination Certificate
active
07633034
ABSTRACT:
Methods and systems use laser pulses to process a selected structure on or within a semiconductor substrate. The structure has a surface, a width, and a length. The laser pulses propagate along axes that move along a scan beam path relative to the substrate as the laser pulses process the selected structure. The method simultaneously generates on the selected structure first and second laser beam pulses that propagate along respective first and second laser beam axes intersecting the selected structure at distinct first and second locations. The first and second laser beam pulses impinge on the surface of the selected structure respective first and second beam spots. Each beam spot encompasses at least the width of the selected link. The first and second beam spots are spatially offset from one another along the length of the selected structure to define an overlapping region covered by both the first and the second beam spots and a total region covered by one or both of the first and second beam spots. The total region is larger than the first beam spot and also larger than the second beam spot. The method sets respective first and second energy values of the first and second laser beam pulses to cause complete depthwise processing of the selected structure across the width of the structure in at least a portion of the total region.
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Baird Brian W.
Bruland Kelly J.
Harris Richard S.
Lo Ho Wai
Sun Yunlong
Electro Scientific Industries Inc.
Elve M. Alexandra
Stoel Rives LLP
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