Presentation on theme: "Semiconductor integrated circuit manufacturing: Very complex process Hundreds of operations Several hundred sets of tools Price of tools is very high."— Presentation transcript:
Semiconductor integrated circuit manufacturing: Very complex process Hundreds of operations Several hundred sets of tools Price of tools is very high ($1- $10 million) Accurate capacity planning is very critical
Chemical Clean Oxidation Photolithography Chemical Etch Ion Implant Metal/Insulator Deposition Anneal
Need to plan capacity one year in advance of the expected demand Find the best product mix with existing capacity Assessing tool capacity by product mix (a complex process) Current planning approach not very efficient (spreadsheets, simulations)
Helps identify tool capacity required to meet the demand Helps volume mix of products to maximize profit
Solver: IBM Optimization Solutions and Library (OSL) on a Unix server Graphical User Interface on a PC client Input data automatically formatted and downloaded from tool-planning database Variables: 3,500 – 5,500 Constraints: 1,600 – 2,400 Products: 1 – 40 Solution time: 18 – 30 seconds
Many scenarios can be analysed in hours versus days 10s of millions of Dollars in savings Comprehensive reports enabling analysis Enables a quick utilization of scenarios to maximum capacity
50 Products, each 400 to 600 operations Tools; same operations, different speeds 100s Tool Groups (identical tools) Parallel, unrelated T.G. T.G. with common operations: Cascade T.G. w/o common operations: NonCascade Identify bottlenecks or gating T.G. Preferred order of T.G. in C.G.