LITHOGRAPHIC APPARATUS, AND DEVICE MANUFACTURING METHOD
PROBLEM TO BE SOLVED: To provide a lithographic apparatus for preventing bubbles from entering a projection beam during image formation. SOLUTION: In a liquid confinement structure of an immersion lithographic apparatus, an elongate continuous opening forms an outlet for supplying liquid to a space...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a lithographic apparatus for preventing bubbles from entering a projection beam during image formation. SOLUTION: In a liquid confinement structure of an immersion lithographic apparatus, an elongate continuous opening forms an outlet for supplying liquid to a space beneath a projection system. The elongate slit forms a region of high shear and pressure gradient that deflects bubbles away from an image field. COPYRIGHT: (C)2011,JPO&INPIT |
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