Patent ID: 6873878

Claim:
A throughput analysis system, for monitoring at least one machine unit comprising two or more machines and a server, wherein the server is used for controlling at least one operation event of the machine unit, and wherein said operation event comprises a plurality of operation steps, the throughput analysis system comprising: a retrieving means, far retrieving a plurality of time data corresponding to each of said operation steps; a storing means, for storing the time data; and calculation means, for calculating an average throughput of the machine unit, wherein the average throughput is calculated by a following equation, average throughput value=actual number of wafers process (wafer out)/actual production time (hour), wherein actual number of wafers (wafers out)=W 1 +W 2 + . . . +WN, where W 1 represents a first wafer, W 2 represent a second wafer and WN represents an Nth wafer, actual production time (hour)=TL 1 +TC 1 +[(Tinit 1 +W 1 *Texp 1 )+(Tloss 2 +Tinit 2 +W 2 *Texp 2 )+ . . . +(TlossN+TinitN+WN*TexpN)]+TDN+TUN, and wherein T represents time, TL 1 represents time for loading the first wafer by a photoresist development control machine, TC 1 represents time for forming a photoresist layer on the first wafer in the photoresist development control machine for the first wafer, Tinit 1 represent time for preparing an exposure of an exposure control machine for the first wafer, Texp 1 represents time for the exposure of the exposure machine for the first wafer, Tloss 2 represents idle time of the second wafer in the exposure control machine, Tinit 2 represent time for preparing an exposure of the exposure control machine for the second wafer, Texp 2 represents time for the exposure of the exposure machine for the second wafer, TlossN represents idle time of the Nth wafer in the exposure control machine, TinitN represent time for preparing an exposure of the exposure control machine for the Nth wafer, TexpN represents time for the exposure of the exposure machine for the Nth wafer, TDN represents time for development of a photoresist exposure control machine of the Nth wafer, and TUN represents time for unloading the Nth wafer from the photoresist development control machine.