| 摘要 |
A semiconductor wafer transport apparatus includes a frame, a transport arm movably mounted to the frame and having at least one end effector movably mounted to the arm so the at least one end effector traverses, with the arm as a unit, in a first direction relative to the frame, and traverses linearly, relative to the transport arm, in a second direction, and an edge detection sensor mounted to the transport arm so the edge detection sensor moves with the transport arm as a unit relative to the frame, the edge detection sensor being a common sensor effecting edge detection of each wafer simultaneously supported by the end effector, wherein the edge detection sensor is configured so the edge detection of each wafer is effected by and coincident with the traverse in the second direction of each end effector on the transport arm. |
| 主权项 |
1. A semiconductor wafer transport apparatus comprising:
a frame; a transport arm movably mounted to the frame and having at least one end effector movably mounted to the arm so that the at least one end effector traverses, with the arm as a unit, in a first direction relative to the frame, and traverses linearly, relative to the transport arm, in a second direction; and an edge detection sensor mounted to the transport arm so that the edge detection sensor moves with the transport arm as a unit relative to the frame, the edge detection sensor being a common sensor effecting edge detection of each wafer of more than one wafers simultaneously supported by the at least one end effector; wherein the edge detection sensor is configured so that the edge detection of each wafer is effected by and coincident with the traverse in the second direction of each end effector of the at least one end effector on the transport arm. |
