METHOD AND APPARATUS FOR DETECTING FAULT IN THE SEMICONDUCTOR MENUFACTURING PROCESS AND RECORDING MEDIUM THEREOF
First Claim
1. A method of detecting a fault in a semiconductor manufacturing process, the method comprising:
- obtaining measured data and reference data regarding at least one parameter related to semiconductor manufacturing conditions in a process included in a semiconductor manufacturing process during a pre-set period of time;
converting the measured data and the reference data by using at least one principal component parameter obtained via principal component analysis with respect to the measured data and the reference data;
calculating a similarity between the converted measured data and the converted reference data; and
detecting a fault in the process based on the calculated similarity.
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Abstract
A method of detecting a fault in a semiconductor manufacturing process. The method includes obtaining measured data and reference data regarding at least one parameter related to semiconductor manufacturing conditions in a process included in a semiconductor manufacturing process during a pre-set period of time; converting the measured data and the reference data by using at least one principal component parameter obtained via principal component analysis with respect to the measured data and the reference data; calculating a similarity between the converted measured data and the converted reference data; and detecting a fault in the process based on the calculated similarity. As a result, production efficiency of a semiconductor manufacturing process may be improved.
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Citations
15 Claims
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1. A method of detecting a fault in a semiconductor manufacturing process, the method comprising:
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obtaining measured data and reference data regarding at least one parameter related to semiconductor manufacturing conditions in a process included in a semiconductor manufacturing process during a pre-set period of time; converting the measured data and the reference data by using at least one principal component parameter obtained via principal component analysis with respect to the measured data and the reference data; calculating a similarity between the converted measured data and the converted reference data; and detecting a fault in the process based on the calculated similarity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15)
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8. A fault detecting device for detecting a fault in a semiconductor manufacturing process, the fault detecting device comprising:
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an input unit, which obtains measured data and reference data regarding at least one parameter related to semiconductor manufacturing conditions in a process included in a semiconductor manufacturing process during a pre-set period of time; a control unit, which converts the measured data and the reference data by using at least one principal component parameter obtained via principal component analysis with respect to the measured data and the reference data and calculates a similarity between the converted measured data and the converted reference data; and a detection unit, which detects a fault in the process based on the calculated similarity. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification