Patent ID: 6718220
Filing Date: 2004-04-06
Classification: G05B,Y02P

Abstract:
A method of monitoring apparatuses of manufacturing integrated circuit (IC), while a plurality of lots of wafers are processed by a plurality of apparatuses, used for monitoring a plurality of apparatus events, the method of monitoring apparatuses of manufacturing IC comprising:providing a database with a plurality of data of the apparatus events; downloading the data of the apparatus events from the database; calculating a plurality of achievement indices by using the data of the apparatus events; establishing a control chart by using the achievement indices, wherein the achievement indices comprises a production output (move), a productive time (PT), a pieces of hour (POH), a time of waiting for material (loss time; LT), a batch count (batch), a averaged waiting time of WIP (W), and a waiting length of WIP (L); establishing a knowledge archive of rules by using the data of the apparatus events, the achievement indices, and the control chart, and determining a plurality of limitative rules to detect an abnormal point; forming a calendar file by sorting the data of the apparatus events with time; and executing a step of replaying the apparatus events so as to proceed a rectification.