Radiation imagery chemistry: process – composition – or product th – Including control feature responsive to a test or measurement
Reexamination Certificate
2009-05-15
2011-10-25
Young, Christopher (Department: 1721)
Radiation imagery chemistry: process, composition, or product th
Including control feature responsive to a test or measurement
C430S022000, C382S144000, C382S148000, C382S149000, C382S151000
Reexamination Certificate
active
08043772
ABSTRACT:
In an exposure process forming a predetermined circuit pattern of a semiconductor device on a wafer, a resist dimension of the resist pattern formed on a wafer and a focus position in the exposure process at a past time are measured. A resist dimension and a focus position of a wafer to which the exposure process is secondly performed are estimated by using measurement results of the measured resist dimension and focus position, and a focus offset value is calculated by using estimated values of the estimated resist dimension and focus position. Then, an exposure dose is calculated with considering this focus offset value, and a resist pattern is formed on the wafer to which the exposure process is performed by using the calculated exposure dose and focus offset value.
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Fudo Hidekimi
Kawachi Toshihide
Konishi Junko
Miwa Toshiharu
Tashiro Takeshi
Mattingly & Malur, PC
Renesas Electronics Corporation
Young Christopher
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