Methods of Selecting Sensors for Detecting Abnormalities in Semiconductor Manufacturing Processes
First Claim
1. A method of selecting at least one of a plurality of sensors that are used in a semiconductor manufacturing process, the method comprising:
- measuring responses of the plurality of sensors when a first of a plurality of process conditions is varied;
identifying one or more of the plurality of sensors that have a steady state response after the first of the process conditions is varied; and
selecting a sensor having the highest value within a response range from among the sensors having the steady state response for the first process condition that is varied.
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Abstract
A method of selecting a sensor in a semiconductor manufacturing process is provided. The method includes measuring responses of a plurality of sensors when a first of a plurality of process conditions is varied, identifying one or more of the sensors having a steady state response after the first of the process conditions is varied, and selecting a sensor having a highest value within a response range from among the sensors having the steady state response for the first process condition that is varied. This methodology may be performed for multiple different process conditions. Thus, when process conditions in multiple processes of manufacturing a semiconductor device are varied, sensors having a steady state response can be selected from among multiple sensors for detecting abnormalities in the processes.
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Citations
9 Claims
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1. A method of selecting at least one of a plurality of sensors that are used in a semiconductor manufacturing process, the method comprising:
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measuring responses of the plurality of sensors when a first of a plurality of process conditions is varied; identifying one or more of the plurality of sensors that have a steady state response after the first of the process conditions is varied; and selecting a sensor having the highest value within a response range from among the sensors having the steady state response for the first process condition that is varied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification