Patent ID: 11938563
Assignee: JSW AKTINA SYSTEM CO., LTD
Field: Machine tools (Mechanical engineering)
Classification: CPC B  H | IPC B  H

Claim 1:
2. A laser anneal base stage comprising:
a plurality of supports that support a workpiece to be irradiated with laser light having a line beam shape, wherein the supports include a plurality of cam members that are arranged along a long axis direction of the laser light and support the workpiece from a lower surface thereof in correspondence to at least an irradiation area where the workpiece is irradiated with the laser light, wherein each cam member includes a cam rotational driver that rotates the cam member, and wherein each cam member includes a blower that causes gas blown from the cam member to come into contact with a lower surface of the workpiece on an immediately upper side of the cam member, irrespective of a rotation position of the cam member;
a scanning apparatus that relatively moves the workpiece with respect to the laser light, and performs scanning with the laser light, wherein, accompanied by scanning with the laser light, the workpiece, at least in the laser light irradiation area, is supported by gas floating caused by the cam members;
a meter that measures a height position of the workpiece along the long axis direction of the laser light in the irradiation area irradiated with the laser light; and
a controller that controls the cam rotational driver,
wherein:
the rotation position of each of the cam members or of each group including a plurality of the cam members is independently controllable by the controller, and
the controller receives a measured result of the meter, and performs control of adjusting a rotation position of each cam member, based on the measured result, and of adjusting the workpiece to a predefined height position.