Patent ID: 6425722
Filing Date: 2002-07-30
Classification: G03F,H01L,Y10S

Abstract:
A substrate treatment system comprising a process portion for processing a substrate under airtight conditions and a transfer portion for transferring a substrate to the process portion under the airtight conditions, whereinsaid transfer portion comprises a mounting portion for mounting an airtight container containing a cassette in which a plurality of substrates are horizontally placed, a substrate transfer portion provided in an airtight space communicating with the process portion below the mounting portion, moving means for moving the cassette between the mounting portion and the substrate transfer portion, detecting means for detecting a protruding substrate when the cassette moves from the substrate transfer portion to the mounting portion, pushing means for pushing the protruding substrate into the cassette when the protruding substrate is detected by the detection means, and a nozzle for supplying a non-oxidative gas into the airtight container mounted on said mounting portion, wherein the nozzle supplies the non-oxidative gas into the airtight container when the cassette is not present in said airtight container.