Patent ID: 8210190
Filing Date: 2012-07-03
Classification: H01L

Abstract:
1. A treatment apparatus comprising: a casing; a substrate-retaining mechanism positioned inside the casing to retain a treatment target substrate and configured to be rotatable while retaining the treatment target substrate; a treatment liquid supply mechanism to supply a treatment liquid to the treatment target substrate retained by the substrate-retaining mechanism; and a rotation mechanism to rotate the substrate-retaining mechanism, wherein the substrate-retaining mechanism has a retaining member with a pivot structure having a first end and a second end each adapted to pivot about a pivot shaft during a substrate retaining operation, the second end of the retaining member is configured to position in a normal position when the first end of the retaining member properly retains the treatment target substrate, and the second end of the retaining member is configured to position in an abnormal position when the first end of the retaining member does not properly retain the treatment target substrate; the treatment apparatus further comprising: a touch sensor fixed on a bottom of the casing and configured to touch a portion of the retaining member under a predetermined condition while the retaining member is being rotated, wherein the touch sensor is arranged adjacent to the second end of the retaining member in such a way that at least a portion of the touch sensor touches the second end of the retaining member while the retaining member is being rotated when the second end of the retaining member is in the abnormal position, thereby detecting that the first end of the retaining member does not properly retain the treatment target substrate.