Substrate transfer device and substrate transfer method

A method of transferring a substrate with respect to a substrate processing chamber in which a substrate is processed, the method comprising:

• moving a transfer controller along a preset route by controlling a magnetic field formed by a plurality of first magnets using:
• a movement tile including the plurality of first magnets configured to change a state of the magnetic field and a movement surface, and provided in a substrate transfer region extending from a substrate delivery position communicating with an outside to a substrate processing position inside the substrate processing chamber;
• and a substrate transfer module configured to hold the substrate and including a second magnet configured to receive an action of a magnetic force which is at least one of a repulsive force and an attractive force acting between the magnetic field of the plurality of first magnets and a magnetic field of the second magnet, and configured to move along the movement surface in a state of being floated from the movement surface by the magnetic force;
• detecting an index value corresponding to a magnitude of a deviation, from the preset route, of an actual movement route of the substrate transfer module moving along the movement surface by controlling the magnetic field;
• calculating a correction parameter for correcting the magnetic force acting on the second magnet based on the index value so that the magnitude of the deviation is reduced;
• and
• performing a correction to change the state of the magnetic field based on the correction parameter in the transfer of the substrate along the preset route after the using the substrate transfer module,
• wherein in the detecting the index value, a magnitude of an acceleration at which the substrate transfer module is moved in a direction intersecting with a direction extending along the preset route is detected as the index value by using a sensor configured to detect the acceleration of the substrate transfer module,
• wherein in the calculating the correction parameter, a correction force having a magnitude corresponding to an external force acting on the transfer module in the direction intersecting with the direction extending along the preset route is calculated as the correction parameter based on the acceleration, and
• wherein, in the performing the correction, the correction is performed so that the magnetic force acting on the second magnet is increased by the correction force in a direction of canceling the deviation as compared with the magnetic force when the index value is detected.

A device for transferring a substrate with respect to a substrate processing chamber in which a substrate is processed, comprising:

• a movement tile provided in a substrate transfer region extending from a substrate delivery position communicating with an outside to a substrate processing position inside the substrate processing chamber, the movement tile including a plurality of first magnets configured to change a state of a magnetic field and a movement surface;
• a substrate transfer module configured to hold the substrate and including a second magnet configured to receive an action of a magnetic force which is at least one of a repulsive force and an attractive force acting between the magnetic field of the plurality of first magnets and a magnetic field of the second magnet, the substrate transfer module configured to move along the movement surface in a state of being floated from the movement surface by the magnetic force;
• a transfer controller configured to control the magnetic field formed by the plurality of first magnets so that the substrate transfer module is moved along a preset route;
• a detector configured to detect an index value corresponding to a magnitude of a deviation, from the preset route, of an actual movement route of the substrate transfer module moving along the movement surface as the magnetic field is controlled by the transfer controller;
• and
• a correction parameter calculation part configured to calculate a correction parameter for correcting the magnetic force acting on the second magnet based on the index value so that the magnitude of the deviation is reduced,
• wherein the transfer controller is configured to perform a correction to change the state of the magnetic field based on the correction parameter in a subsequent transfer of a substrate along the preset route,
• wherein the detector includes a sensor configured to detect a position of the substrate transfer module on the movement surface, and the index value is a deviation width of the movement route from the preset route,
• wherein the correction parameter calculation part is configured to calculate a correction force having a magnitude corresponding to an external force acting on the transfer module in a direction intersecting with a direction extending along the preset route based on an acceleration which is a second-order time derivative value for the deviation width as the correction parameter, and
• wherein the transfer controller is configured to perform the correction so that the magnetic force acting on the second magnet is increased by the correction force in the direction of canceling the deviation as compared with the magnetic force when the index value is acquired.

A method of transferring a substrate with respect to a substrate processing chamber in which a substrate is processed, the method comprising:

• moving a transfer controller along a preset route by controlling a magnetic field formed by a plurality of first magnets using:
• a movement tile including the plurality of first magnets configured to change a state of the magnetic field and a movement surface, and provided in a substrate transfer region extending from a substrate delivery position communicating with an outside to a substrate processing position inside the substrate processing chamber;
• and a substrate transfer module configured to hold the substrate and including a second magnet configured to receive an action of a magnetic force which is at least one of a repulsive force and an attractive force acting between the magnetic field of the plurality of first magnets and a magnetic field of the second magnet, and configured to move along the movement surface in a state of being floated from the movement surface by the magnetic force;
• detecting an index value corresponding to a magnitude of a deviation, from the preset route, of an actual movement route of the substrate transfer module moving along the movement surface by controlling the magnetic field;
• calculating a correction parameter for correcting the magnetic force acting on the second magnet based on the index value so that the magnitude of the deviation is reduced;
• and
• performing a correction to change the state of the magnetic field based on the correction parameter in the transfer of the substrate along the preset route after the using the substrate transfer module,
• wherein in the detecting the index value, a deviation width of the movement route from the preset route is detected as the index value by using a sensor configured to detect a position of the substrate transfer module on the movement surface,
• wherein in the calculating the correction parameter, a correction force having a magnitude corresponding to an external force acting on the transfer module in a direction intersecting with a direction extending along the preset route is calculated as the correction parameter based on an acceleration which is a second-order time derivative value for the deviation width, and
• wherein, in the performing the correction, the correction is performed so that the magnetic force acting on the second magnet is increased by the correction force in a direction of canceling the deviation as compared with the magnetic force when the index value is detected.