Patent ID: 9110461
Filing Date: 2015-08-18
Classification: G05B,Y02P

Abstract:
1. Semiconductor manufacturing equipment including configuration for realizing wafer process processing and preparatory processing, the semiconductor manufacturing equipment comprising: a controller controlling driving and processes of various parts of the semiconductor manufacturing equipment, and a sensor monitoring each physical amount in the semiconductor manufacturing equipment or a status of each chemical response amount; a database storing equipment data obtained by sampling, at predetermined intervals, output signals of the controller and the sensor of the semiconductor manufacturing equipment being manufactured; and an arithmetic section executing: processing of searching the database for the equipment data of the semiconductor manufacturing equipment to be evaluated, reading out the equipment data to be analyzed, calculating a correlation matrix between time points based on a plurality of pieces of signal data to be compared, calculating eigen values and eigen vectors from the correlation matrix, and calculating principal component scores by principal component analysis; processing of comparing magnitudes of the eigen values of the principal components, arranging the eigen values in descending order to display a list thereof on a user interface screen, thereby enabling determination of the eigen value having a contribution ratio; and processing of displaying on the user interface screen a scatter diagram where the principal component scores of the respective signals are plotted in a feature space where the principal component corresponding to the eigen value having the contribution ratio is selected.