Patent ID: 6522942
Filing Date: 2003-02-18
Classification: H01L,Y10S

Abstract:
A transfer apparatus for transferring a target substrate in a semiconductor processing system, comprising:a transfer member including a mount portion on which the substrate is placed; a driving section configured to drive the transfer member in order to transfer the substrate; first and second reference portions provided adjacent to the mount portion, the first and second reference portions moving integratedly with the mount portion when the transfer member transfers the substrate; a storage section configured to store first and second reference values representing distances between the substrate located at a normal position on the mount portion and the first and second reference portions; a detecting section configured to detect first and second distances between the substrate and the first and second reference portions when the transfer member transfers the substrate; and a calculating section configured to calculate the amount of positional shift of the substrate from the normal position based on the first and second reference values and the first and second distances.