Patent ID: 6823228
Filing Date: 2004-11-23
Classification: G05B,G06Q,Y02P

Abstract:
A method of determining fabricator capacity for a wafer start loading over a set time period, the wafer start loading having a number of wafer starts, the method comprising the steps of:a) determining a common tool set capacity by dividing wafer starts that use common non-key shared tool sets by an overall capacity parameter, wherein the overall capacity parameter is based on a strategic characteristic wafer start loading; b) determining a technology capacity by dividing the wafer starts of each technology within the wafer start loading by a corresponding unique tool set capacity for the respective technology; and c) determining key shared tool set capacity by: i) determining a capacity consumption factor for each key shared tool set used by at least one process; ii) determining a capacity consumption of each key shared tool set used by a process of the wafer start loading; iii) decreasing a remaining capacity value for each key shared tool set used by the process of the wafer start loading by a corresponding capacity consumption; iv) repeating steps ii) and iii) for each process of the wafer start loading; and v) determining the amount of wafer start capacity available for each process by dividing each remaining capacity value by a corresponding capacity consumption factor for a corresponding process.