Patent ID: 6768538
Filing Date: 2004-07-27
Classification: H01L

Abstract:
A semiconductor photolithography system comprising:an exposure tool adapted to perform functionality related to each of a front-end wafer and a back-end wafer; one or more pre-exposure front-end photoresist modules to perform pre-exposure functionality related to photoresist on the front-end wafer; one or more post-exposure front-end photoresist modules to perform post-exposure functionality related to photoresist on the front-end wafer; one or more pre-exposure back-end photoresist modules to perform pre-exposure functionality related to photoresist on the back-end wafer; one or more post-exposure back-end photoresist modules to perform post-exposure functionality related to photoresist on the back-end wafer; a first track on which the pre-exposure and the post-exposure front-end photoresist modules are located, the first track able to transport the front-end wafer to the exposure tool such that the pre-exposure front-end photoresist modules perform the pre-exposure functionality on the front-end wafer prior to performance by the exposure tool of the functionality related to the front-end wafer, the first track further able to transport the front-end wafer away from the exposure tool such that the post-exposure front-end photoresist modules perform the post-exposure functionality on the front-end wafer after performance by the exposure tool of the functionality related to the front-end wafer; and, a second track on which the pre-exposure and the post-exposure back-end photoresist modules are located, the second track able to transport the back-end wafer to the exposure tool such that the pre-exposure back-end photoresist modules perform the pre-exposure functionality on the back-end wafer prior to performance by the exposure tool of the functionality related to the back-end wafer, the second track further able to transport the back-end wafer away from the exposure tool such that the post-exposure back-end photoresist modules perform the post-exposure functionality on the back-end wafer after performance by the exposure tool of the functionality related to the back-end wafer.