Patent ID: 6772045
Filing Date: 2004-08-03
Classification: H04L,Y10S

Abstract:
A system for determining dry cleaning timing, comprising:a manufacturing apparatus configured to process materials assigned by a sequence of lots, the manufacturing apparatus having a chemical vapor deposition chamber configured to be evacuated, exhaust piping connected to an exhaust end of the chemical vapor deposition chamber, and a vacuum pump unit configured to evacuate the chemical vapor deposition chamber through the exhaust piping; an apparatus controller configured to control the manufacturing apparatus and to obtain operational conditions of the manufacturing apparatus as apparatus information, where information includes an accumulated deposition thickness and a type description of deposited film in the chemical vapor deposition chamber, a condition of a post-process apparatus scheduled to process a lot after a process of the manufacturing apparatus, and a condition for incidental facilities of the manufacturing apparatus; a lot information input terminal configured to obtain process conditions of one of the lots as lot information; an apparatus information storage unit configured to store the apparatus information from the apparatus controller as an apparatus information database; a lot information storage unit configured to store the lot information from the lot information input terminal as a lot information database; and a cleaning determination unit configured to determine timing to perform a dry cleaning of the manufacturing apparatus based on the apparatus information database and the lot information database.