Patent ID: 7446872

Claim:
A positioning method for directly positioning a load port and a transport system, comprising: (a) disposing a positioning board on the load port, the positioning board having two holes thereon; (b) disposing a signal emitting unit on the transport system, wherein the signal emitting unit has two positioning points thereon capable of emitting two light beams to the positioning board, and positions of the two positioning points correspond to positions of the two holes; (c) setting the positioning board to be horizontal; (d) making the signal emitting unit emit two light beams to the positioning board, wherein the two light beams are set to be perpendicular to a surface of the positioning board; (e) obtaining a translational deviation and a rotational deviation of the load port based on positions of two light spots on the positioning board generated from the two light beams relative to the two holes; and (f) adjusting the load port according to the translational deviation and the rotational deviation, until the two light beams can pass through the two holes.