Method for quickly establishing lithography process condition by a pre-compensation value
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United States of America
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Sep 10, 2019
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Oct 25, 2018
app pub date -
Oct 31, 2017
filing date -
Oct 31, 2017
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Abstract
The present invention discloses a method for quickly establishing lithography process condition by a pre-compensation value, comprising: firstly determining a reference process condition of masks of which parameters are same, and then determining an optimum process condition of the first mask; thereafter, calculating a ratio of the optimum process condition of the first mask deviating from the reference process condition, wherein if the ratio is equal to or larger than a set threshold, the first mask is inspected, and if the ratio is less than the set threshold, an optimum process condition of the second mask is determined according to the ratio and the reference process condition of the second mask; and by analogy, determining optimum process conditions of the rest masks. The method of the present invention can quickly establish a lithograph process condition, reduce the trial production time for determining the optimum defocus amount and exposure amount.
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