Self Aligning Automated Material Handling System

摘要

A semiconductor workpiece processing system comprises at least one processing tool; a transport section configured to transport carriers to and from the processing tool; and a transport vehicle movably mounted on the transport section; wherein the transport vehicle is configured to: sense a location of a transport carrier alignment feature; adjust a location of a transport vehicle gripper based on the location of the transport carrier alignment feature; sense an attitude of the gripper at a point of engagement with the transport carrier; and adjust the location of the gripper based on the attitude of the gripper.