Patent ID: 8201567
Filing Date: 2012-06-19
Classification: H01L

Abstract:
1. A liquid treating apparatus comprising: holding means for holding a generally flat plate-like workpiece in a substantially vertical attitude; a treating vessel for accommodating the workpiece held by said holding means; a treating liquid supply system for supplying a treating liquid to the workpiece accommodated in said treating vessel; and rotational drive means for rotating said holding means around a rotational axis passing approximately through the center of the workpiece in a state of non-contact with the treating vessel and the rotational drive means, wherein said holding means includes: at least a pair of holding members for holding an outer edge of the workpiece from outside in a radial direction with respect to said rotational axis; a moving mechanism for moving said holding members radially with respect to said rotational axis; a driven shaft adapted to be rotationally driven by said rotational drive means; an operating shaft disposed concentrically within said driven shaft; and actuator means for rotating said operating shaft relatively with respect to said driven shaft, and wherein said moving mechanism is operated by the rotation of said operating shaft.