Scanning exposure apparatus having a scanning device for scanning light beams along the movement direction of a moving mask stage
First Claim
1. A scanning exposure apparatus for continuously transferring segments of an original pattern formed on a photomask onto a photosensitive substrate to transfer an image of the entire original pattern onto said photosensitive substrate, comprising:
- a mask stage for moving said photomask in a predetermined direction;
a substrate stage for moving said photosensitive substrate in a direction along the moving direction of said mask stage in synchronization with movement of said mask stage;
driving means for driving said mask stage and substrate stage;
a light supply system for emitting light beams for detecting a relative positional relation between said mask stage and said substrate stage;
scanning means for scanning said light beams emitted from said light supply system along the movement direction of the mask stage so as to follow the moving mask stage; and
a light-receiving system for detecting reflected light of the light beams emitted from said light supply system.
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Abstract
A scanning exposure apparatus according to the present invention comprises a reticle stage for continuously moving a reticle and a wafer stage for moving a wafer in synchronization with the movement of reticle. A light supply system emits light beams for detecting a relative positional relation between the reticle stage and the wafer stage toward the reticle. On this occasion the emitted light beams are scanned to follow the moving reticle stage, using for example a galvanometer scanner.
52 Citations
17 Claims
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1. A scanning exposure apparatus for continuously transferring segments of an original pattern formed on a photomask onto a photosensitive substrate to transfer an image of the entire original pattern onto said photosensitive substrate, comprising:
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a mask stage for moving said photomask in a predetermined direction; a substrate stage for moving said photosensitive substrate in a direction along the moving direction of said mask stage in synchronization with movement of said mask stage; driving means for driving said mask stage and substrate stage; a light supply system for emitting light beams for detecting a relative positional relation between said mask stage and said substrate stage; scanning means for scanning said light beams emitted from said light supply system along the movement direction of the mask stage so as to follow the moving mask stage; and a light-receiving system for detecting reflected light of the light beams emitted from said light supply system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A scanning exposure apparatus comprising:
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a substrate stage for moving a photosensitive substrate in a direction along a moving direction of a mask stage for moving a photomask in synchronization with movement of said mask stage; a light supply system for emitting light beams for detecting a relative positional relation between said mask stage and said substrate stage; and scanning means for scanning said light beams emitted from said light supply system along the movement direction of the mask stage so as to follow the moving mask stage.
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Specification