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US08219938B2 Semiconductor inter-field dose correction 有权
半导体场间剂量校正

Semiconductor inter-field dose correction
Abstract:
A method and apparatus are provided for adapting a semiconductor inter-field dose correction map from a first photolithography mask to a second photolithography mask using the same manufacturing stack and reactive ion etching processes, the method including: obtaining a first dose correction map for the first photolithography mask as a function of first chip or die identities; determining a first transformation matrix from the first chip or die identities of the first photolithography mask into an orthogonal coordinate system; determining a second transformation matrix from second chip or die identities of the second photolithography mask into the orthogonal coordinate system; and transforming the first dose correction map for the first photolithography mask into a second dose correction map for the second photolithography mask in correspondence with each of the first and second transformation matrices.
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