PATENT CLAIM ANALYSIS

Application Number: 16272354
Application Type: Utility
Filing Date: 2019-02
Publication Date: 2019-06
Patent Classification: ["438", "005000"]

Abstract:
A plasma processing apparatus, plasma processing method, and plasma processing analysis method in which a suitable combination of wavelength, time interval, and etching condition parameter for control to change etching conditions is determined among wavelengths, time intervals, and changeable parameters for spectroscopic measurement data in order to ensure stable etching conditions. Specifically, a regression equation which represents the correlation between emission intensity and etching result at a wavelength and a time interval is obtained for each of two or more combinations of wavelength, time interval, and etching condition parameter. Furthermore, for each of the combinations, the amount of change is calculated from the regression equation when the value set for the etching condition parameter is changed. Among the combinations, the combination for which the amount of change is the smallest is determined as the combination of wavelength, time interval, and changed etching condition parameter to be used for control.

Claim (Index 13):
A plasma processing apparatus which performs plasma processing on a specimen with Advanced Process Control (APC) in use as control to suppress fluctuations in plasma processing by feedback control or feedforward control and is connected to an analysis unit configured to select a combination for the APC of plasma emission wavelength, time interval for the plasma emission wavelength, and a parameter for the plasma processing, the apparatus comprising:\n the analysis unit further configured to\n obtain a first regression equation representing correlation between a plasma emission intensity and a plasma processing result from temporal change data of the plasma processing according to a fixed recipe; \n obtain a second regression equation representing correlation between the plasma emission intensity and plasma processing result according to a changed recipe based on experimental data; \n select the combination for the APC of plasma emission wavelength, time interval for the plasma emission wavelength, and a parameter for the plasma processing so as to\n make a coefficient of correlation of the first regression equation higher than a first prescribed value; and \n make a difference between a gradient of the first regression equation and the gradient of the second regression equation smaller than a second prescribed value.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 99.0
- Lexical Diversity: 2.42029
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14825098', '15074204', '14625855', '13144097', '15050631']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8478188544577401
- 35 USC 102 Novelty (BERT): 0.6269434971819183
- Combined Prediction Score: 0.8257313187301579
- Mean Citation Score: 305.406104
- Max Citation Score: 586.4889
- Similarity Product: 542.2607533402024

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test