PATENT CLAIM ANALYSIS

Application Number: 16098350
Application Type: Utility
Filing Date: 2018-11
Publication Date: 2019-05
Patent Classification: ["355", "067000"]

Abstract:
A lithographic method for measuring a position of a target grating with a mask sensor apparatus which comprises a plurality of detector modules each comprising a diffraction grating located at a mask side of a projection system of a lithographic apparatus and an associated detector, the method comprising a first step of measuring first intensities of a combination of diffraction orders diffracted from the target grating while the mask sensor apparatus is moved relatively to the target grating along a first direction; a second step of displacing the mask sensor apparatus relative to the target grating in a second direction, wherein a size of the relative displacement is proportional to a spatial frequency of a potential error; and a third step of measuring second intensities of the combination of diffraction orders diffracted from the target grating while the mask sensor apparatus is moved relatively to the target grating along the first direction.

Claim (Index 28):
A method of manufacturing devices wherein device features and target gratings are formed on a series of substrates by a lithographic process, wherein properties of the target gratings on one or more processed substrates are measured by the method for measuring a position of a target grating with a mask sensor apparatus which comprises a plurality of detector modules each comprising a diffraction grating located at a mask side of a projection system of a lithographic apparatus and an associated detector, the method comprising:\n measuring first intensities of a combination of diffraction orders diffracted from the target grating while the mask sensor apparatus is moved relatively to the target grating along a first direction; displacing the mask sensor apparatus relative to the target grating in a second direction, wherein a size of the relative displacement is proportional to a spatial frequency of a potential error; and measuring second intensities of the combination of diffraction orders diffracted from the target grating while the mask sensor apparatus is moved relatively to the target grating along the first direction, and wherein the measured properties are used to adjust parameters of the lithographic process for the processing of further substrates.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 98.0
- Lexical Diversity: 2.57377
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15325406', '15778093', '14787451', '14202825', '12351563']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6784930111667249
- 35 USC 102 Novelty (BERT): 0.5103048046780215
- Combined Prediction Score: 0.6616741905178546
- Mean Citation Score: 275.607942
- Max Citation Score: 315.1147
- Similarity Product: 225.56493955835103

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

Dataset: test