Abstract:
PROBLEM TO BE SOLVED: To provide a method of transferring a substrate and a transfer system having more improved placement accuracy than hitherto known. SOLUTION: This method in a lithographic apparatus can transfer a substrate from a first substrate holder to a second substrate holder by a transfer unit based on transfer data available thereto. The second substrate holder includes a surface on which a plurality of first bars are provided. This method provides a memory in which bar position data and substrate position data are encoded. Thereby, the substrate is provided on the first substrate holder. Then, a position error and direction of the substrate are measured. The direction adjustment data are calculated based on the bar position data, the substrate position data and the measured direction. The direction of the substrate is then adjusted in accordance with the direction adjustment data. After that, the substrate is transferred from the first substrate holder to the second substrate holder by the transfer unit, and is disposed on the second substrate holder. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a substrate arranging method having improved arrangement accuracy relative to known ones until now; a substrate transferring method; and a transferring system. SOLUTION: This invention is related to a method of arranging a substrate on a surface of a substrate holder provided with a plurality of bars. In this method, substrate arrangement data for allowing the substrate to be arranged at a specific position with respect to the positions of the plurality of bars located on a surface of the substrate holder are first calculated. Then, the substrate is arranged at the specific position in accordance with the substrate arrangement data. The specific position is based on an arrangement position to minimize an overlay error or based on an arrangement position to minimize deformation of the substrate. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of transferring a substrate and a transfer system, having more improved placement accuracy than hitherto known. SOLUTION: This method can transfer a substrate from a first substrate holder, e.g. a pre-alignment unit to a second substrate holder, e.g. a substrate table in a lithographic apparatus by a transfer unit, based on transfer data used available thereto. First, a substrate is provided to the first substrate holder. Subsequently, a positional difference of the substrate is measured and positional adjustment data are calculated based on the measured positional difference. Then, the second substrate holder is moved to its reference position in accordance with the positional adjustment data. Finally, the substrate is transferred from the first substrate holder to the second substrate holder by the transfer unit in accordance with the transfer data, and the substrate is disposed on the second substrate holder after moving. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
A lithographic apparatus includes a substrate table, a post-exposure handling module, a substrate handling robot and a drying station. The substrate table is configured to support a substrate for an exposure process. The post-exposure handling module is configured to handle the substrate post-exposure. The substrate handling robot is configured to transfer the substrate from the substrate table along a substrate unloading path into the post-exposure handling module. The drying station is configured to actively remove liquid from a surface of the substrate. The drying station is located in the substrate unloading path. The drying station is located in the post-exposure handling module. The post-exposure handling module may be a substrate handler.