Patent ID: 9679787
Date: 2017-06-13
CPC Classifications: G03F,H01L

Claim:
1. A spin treatment apparatus that performs treatment on a substrate while rotating the substrate, the apparatus comprising: an annular liquid receiver surrounding the rotating substrate at a distance from an outer periphery of the substrate and configured to receive liquid flying from the rotating substrate and accommodate the liquid, wherein: the annular liquid receiver includes a plurality of slanted plate members each provided on an inner peripheral surface of the annular liquid receiver in such a manner that each of the plurality of slanted plate members gradually becomes lower along a rotation direction of the substrate and configured to receive liquid flying from the rotating substrate, the plurality of slanted plate members are arranged in a peripheral direction of the inner peripheral surface of the annular liquid receiver to prevent the liquid flying from any position of the outer periphery of the substrate and traveling in a straight line from hitting the inner peripheral surface of the annular liquid receiver, an upper end portion of the annular liquid receiver is formed to slant inward over an entire periphery of the annular liquid receiver, and the plurality of slanted plate members are formed to extend to an inner peripheral surface of the upper end portion.