Patent ID: 8571704
Filing Date: 2013-10-29
Classification: H01L

Abstract:
1. A substrate transfer apparatus for transferring a substrate between a core chamber and a peripheral chamber, wherein the core chamber is connected to a first chamber and a second chamber, each of the first and second chambers being arranged as the peripheral chamber, the substrate transfer apparatus comprising: a transfer robot arranged in the core chamber and including an arm, wherein the arm is capable of extending/drawing and pivoting a hand for carrying the substrate so as to transfer the substrate from the first chamber serving as an initial point to the second chamber serving as a terminal point; a first sensor which detects an edge surface of the substrate at a first detection point associated with the initial point, wherein the first sensor is arranged at a position that the edge surface of the substrate passes by when the hand is extended/drawn between the core chamber and the first chamber and that the edge surface of the substrate passes by when the hand is pivoted in the core chamber; a second sensor which detects the edge surface of the substrate at a second detection point associated with the terminal point; and a control unit which controls the first sensor, the second sensor, and the transfer robot, wherein the control unit: