Measurement system cluster
View Patent ↗Systems and methods are disclosed for measuring semiconductor wafers in a fabrication process using one or more of a plurality of measurement systems. A measurement system cluster is provided having a plurality of such measurement systems, along with a system for transferring wafers to one or more of the measurement systems according to one or more selection criteria. Measurement systems may be selected for use based on availability and throughput capabilities, whereby overall system throughput and efficiency may be improved within the required accuracy capabilities required for measuring process parameters associated with the wafers.
1. A system for creating setup information for use in measuring process parameters associated with semiconductor wafers in a semiconductor device manufacturing process, comprising:
a stand-alone measurement instrument adapted to measure a wafer; and
a setup information generator operatively associated with the stand-alone measurement instrument to create setup information according to a measurement therefrom and to provide the setup information to a process measurement system associated with the semiconductor device manufacturing process;
wherein the setup information is usable by the process measurement system to measure process parameters associated with semiconductor wafers in the semiconductor device manufacturing process.
2. The system of claim 1 , wherein the setup information comprises at least one of a recipe and a database.
3. The system of claim 1 , wherein the setup information comprises a recipe.
4. The system of claim 1 , wherein the setup information comprises a database.
5. The system of claim 1 , wherein the setup information comprises defect information.
6. The system of claim 1 , wherein the stand-alone measurement instrument is networked to the process measurement system.
7. The system of claim 1 , wherein the stand-alone measurement instrument includes at least one of a reflectometer and an ellipsometer.
8. The system of claim 1 , wherein said process measurement system is integrated with a process tool.
9. The system of claim 1 , wherein said process measurement system is a measurement cluster with at least two different measurement instruments.
10. A method of fabricating semiconductor wafers comprising the steps of:
measuring a wafer in a stand-alone measurement instrument to develop a database of information related thereto;
supplying the database information to a process measurement system;
processing a wafer in a process tool; and
measuring the wafer with a measurement system associated with the process tool and using the database information supplied from the stand-alone measurement instrument.
11. A method as recited in claim 10 , wherein said stand-alone measurement instrument is networked to said process measurement system.
12. A method as recited in claim 10 , wherein said process measurement system is integrated with the process tool.
13. A system for fabricating a semiconductor wafer comprising:
a wafer process tool;
a process measurement instrument associated with the process tool for measuring wafers after emerging from the process tool; and
a stand-alone measurement system for measuring wafers and generating database information related thereto, said database information being supplied to the process measurement instrument to aid in measuring the wafers after processing.
14. A system as recited in claim 13 , wherein said process measurement instrument is integrated with the process tool.
15. A system as recited in claim 13 , wherein said stand-alone measurement system is networked to the process measurement instrument.
16. A system for fabricating a semiconductor wafer comprising:
a wafer process tool;
a process measurement cluster associated with the process tool for measuring wafers after emerging from the process tool, said measurement cluster including at least two different measurement instruments; and
a stand-alone measurement system for measuring wafers and generating database information related thereto, said stand-alone measurement system including at least two measurement instruments of the type in the process measurement cluster, said database information being supplied to the process measurement cluster to aid in measuring the wafers after processing.
17. A system as recited in claim 16 , wherein said process measurement cluster is integrated with the process tool.
18. A system as recited in claim 16 , wherein said stand-alone measurement system is networked to the process measurement cluster.