Patent ID: 6642533
Filing Date: 2003-11-04
Classification: H01L,Y10S

Abstract:
A substrate detector installed in a sealed container for storing therein and transferring a plurality of substrates, said substrate detector being operatively connected to a door fixing unit for moving a front door of the sealed container in directions to and from the sealed container and in vertical directions so as to open the sealed container and to close the sealed container with the front door, comprising:a support arm mounted on the door fixing unit; a sensor mounted at a distal end of the support arm; a rotation transmitting member mounted rotatably at an upper end of the door fixing unit for supporting a base end of the support arm and for transmitting rotation thereof to the support arm; and a linkage connected to the rotation transmitting member for rotating the rotation transmitting member at a predetermined angle, said rotation of the rotary transmitting member at the predetermined angle causing the support arm to be inserted into the sealed container and to be located in a predetermined position with respect to the substrates within the sealed container.