Patent ID: 6152677
Filing Date: 2000-11-28
Classification: H01L,Y10S

Abstract:
A substrate transfer apparatus comprising:an arm having a top face on which a substrate to be processed is placed;first and second suction pad means which are provided on the top face of said arm in such a manner that they can go up and down freely to suck said substrate, said first suction pad means going up to suck said substrate before processing and said second suction pad means going up to suck said substrate after processing;a lift unit for raising and lowering said first and second suction pad means, said first suction pad means being raised before processing and lowered after processing, and said second suction pad means being lowered before processing and raised after processing;a driving section for moving said arm to load and unload said substrate into and from a processing machine, with said substrate kept on said arm; andwherein said lift unit is constructed by a bag member which expands from the supply of fluid and selectively raises said first and second suction pad means.