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|Title:||Critical dimension uniformity via real-time photoresist thickness control|
|Authors:||Ho, W.K. |
|Citation:||Ho, W.K., Tay, A., Chen, M., Fu, J., Lu, H., Shan, X. (2007-11). Critical dimension uniformity via real-time photoresist thickness control. IEEE Transactions on Semiconductor Manufacturing 20 (4) : 376-380. ScholarBank@NUS Repository. https://doi.org/10.1109/TSM.2007.907610|
|Abstract:||In this paper, we present the experimental results on wafer-to-wafer and within-wafer critical dimension (CD) control. It is known that photoresist thickness affects CD. In this paper, we control photoresist thickness to control CD. As opposed to run-to-run control where information from the previous wafer or batch is used for control of the current wafer or batch, the approach here is real time and makes use of the current wafer information for control of the current wafer CD. The experiments demonstrate that such an approach can reduce CD nonuniformity wafer to wafer and within wafer. © 2006 IEEE.|
|Source Title:||IEEE Transactions on Semiconductor Manufacturing|
|Appears in Collections:||Staff Publications|
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