Patent ID: 7670530

Claim:
A method for patterning first and second substrates in a nanoimprint lithography system, said method comprising: positioning said first substrate on a first substrate chuck having a cavity, a first side of said first substrate positioned toward a nanoimprint mold assembly, and a second side of said first substrate positioned toward said first substrate chuck; positioning a nanoimprint material on said first side of said first substrate; obtaining a spatial relationship between said first substrate and said nanoimprint mold assembly and imprinting a pattern in said nanoimprint material on said first side of said first substrate with said nanoimprint mold assembly while concurrently positioning said second substrate on a second substrate chuck; separating said nanoimprint mold assembly from said nanoimprint material on said first substrate; positioning a nanoimprint material on said second substrate; removing said first substrate from said first substrate chuck while concurrently obtaining a spatial relationship between said second substrate and said nanoimprint mold assembly and imprinting a pattern in said nanoimprint material on said second substrate with said nanoimprint mold assembly; separating said nanoimprint mold assembly from said nanoimprint material on said second substrate; and with said first and second substrates being subjected to substantially the same process conditions wherein the step of removing said first substrate further comprises a step of flipping said first substrate 180 degrees with respect to said nanoimprint mold assembly such that said nanoimprint material on said first substrate is positioned within said cavity of said first substrate chuck.