Conventionally, people focus on defect reduction to improve yield rate. Little research has been done to deal with the problem of optimizing wafer exposure patterns. This paper develops a computer-based procedure to maximize the number of dies possibly produced from a wafer. A program has been developed and implemented in a 6-in wafer fabrication factory in Taiwan. The results validate the practical viability of the proposed procedure
Published in:
Semiconductor Manufacturing, IEEE Transactions on
(Volume:12
,
Issue:
3
)
Date of Publication: Aug 1999