PATENT CLAIM ANALYSIS

Application Number: 16009939
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-06
Patent Classification: ["355", "067000"]

Abstract:
An overlay metrology system may measure a first-layer pattern placement distance between a pattern of device features and a pattern of reference features on a first layer of an overlay target on a sample. The system may further measure, subsequent to fabricating a second layer including at least the pattern of device features and the pattern of reference features, a second-layer pattern placement distance between the pattern of device features and the pattern of reference features on the second layer. The system may further measure a reference overlay based on relative positions of the pattern of reference features on the first layer and the second layer. The system may further determine a device-relevant overlay for the pattern of device-scale features by adjusting the reference overlay with a difference between the first-layer pattern placement distance and the second-layer pattern placement distance.

Claim (Index 1):
An overlay metrology system, comprising:\n a controller including one or more processors configured to execute program instructions causing the one or more processors to:\n measure a first-layer pattern placement distance between a pattern of device features and a pattern of reference features on a first layer of an overlay target on a sample; \n measure, subsequent to fabricating a second layer including at least the pattern of device features and the pattern of reference features, a second-layer pattern placement distance between the pattern of device features and the pattern of reference features on the second layer; \n measure a reference overlay based on relative positions of the pattern of reference features on the first layer and the second layer, wherein dimensions of the pattern of reference features on the first layer are resolvable by an imaging system through the second layer; and \n determine a device-relevant overlay for the pattern of device-scale features by adjusting the reference overlay with a difference between the first-layer pattern placement distance and the second-layer pattern placement distance.

Metadata:
- Claim Count in Document: 98.0
- Percentile: 94.0
- Lexical Diversity: 3.10638
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15979336', '15948941', '15867485', '15667401', '11833304']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7036102900854865
- 35 USC 102 Novelty (BERT): 0.4824646798496079
- Combined Prediction Score: 0.6814957290618986
- Mean Citation Score: 228.896492
- Max Citation Score: 251.337
- Similarity Product: 188.7408556712865

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