PATENT CLAIM ANALYSIS

Application Number: 15972063
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-09
Patent Classification: ["716", "052000"]

Abstract:
Disclosed are methods of optimizing a computer model which relates the etch profile of a feature on a semiconductor substrate to a set of independent input parameters (A), via the use of a plurality of model parameters (B). In some embodiments, the methods may include modifying one or more values of B so as to reduce a metric indicative of the differences between computed reflectance spectra generated from the model and corresponding experimental reflectance spectra with respect to one or more sets of values of A. In some embodiments, calculating the metric may include an operation of projecting the computed and corresponding experimental reflectance spectra onto a reduced-dimensional subspace and calculating the difference between the reflectance spectra as projected onto the subspace. Also disclosed are etch systems implementing such optimized computer models.

Claim (Index 17):
A method of determining a set of values for a set of independent input parameters for an etch process which will approximately yield a desired etch profile of a feature on a semiconductor substrate after the feature is etched by said etch process, the method comprising:\n (a) specifying test values for the set of independent input parameters corresponding to the etch process; (b) generating a computed etch profile using the optimized computer model of  claim 15  with the specified set of test values for the independent input parameters; (c) computing a metric indicative of the difference between the desired etch profile and the computed etch profile; and (d) modifying one or more values for the set of independent input parameters specified in (a) so as to reduce the difference between desired and computed etch profiles as ascertained by repeating (b)-(c).

Metadata:
- Claim Count in Document: 65.0
- Percentile: 93.0
- Lexical Diversity: 1.90667
- Patent Class: 716.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15698458', '15018708', '15188910', '14972969', '15946940']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4352365214028184
- 35 USC 102 Novelty (BERT): 0.5582835091077838
- Combined Prediction Score: 0.447541220173315
- Mean Citation Score: 424.39715
- Max Citation Score: 487.7839
- Similarity Product: 423.85281758498553

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

Dataset: test