Multiple-Blade Device for Substrate Edge Protection during Photolithography
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United States of America Patent
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Issued Date -
Oct 1, 2015
app pub date -
Oct 2, 2013
filing date -
Oct 5, 2012
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Abstract
An apparatus (1100) for protecting at least a portion of a peripheral region of a photoresist-coated surface of a substrate from light exposure. The apparatus includes two or more movable blades (1102) and a drive assembly (1112, 1114) operably coupled to the movable blades. In response to at least one first drive force generated by the drive assembly, the movable blades translate such that the movable blades are disposed above at least a portion of the peripheral region. In response to at least one second drive force generated by the drive assembly, the movable blades translate such that the movable blades are not disposed above a portion of the peripheral region.
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