PATENT CLAIM ANALYSIS

Application Number: 15756272
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-09
Patent Classification: ["438", "401000"]

Abstract:
An alignment system, a dual-wafer-stage system and a measurement system are disclosed, the alignment system including a main frame ( 201, 301 ), a first wafer stage ( 205, 305 ), an alignment sensor ( 202, 302 ), a position acquisition module ( 208, 308 ) and a signal processing device ( 203, 303 ). The position acquisition module ( 208, 308 ) collects positional data from the first wafer stage ( 205, 305 ) and the reflector ( 204, 304 ) simultaneously. The reflector ( 204, 304 ) is arranged on the alignment sensor ( 202, 302 ). In other words, positional data of the alignment sensor ( 202, 302 ) and positional data of the first wafer stage ( 205, 305 ) are collected simultaneously. In addition, the data can be processed to indicate the relative position of the first wafer stage ( 205, 305 ) relative to the alignment sensor ( 202, 302 ) whose vibration has been zeroed. That is, a position where an alignment mark is aligned can be obtained with the relative vibration amplitude of the alignment sensor ( 202, 302 ) being zeroed. This can circumvent the impact of vibration of the alignment sensor ( 202, 302 ) and allow increased repeatability accuracy of alignment.

Claim (Index 2):
The alignment system of  claim 1 , wherein the alignment sensor comprises an illumination module configured to provide an ultraviolet light or an extreme ultraviolet light for illuminating the alignment mark for alignment.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 88.0
- Lexical Diversity: 2.96341
- Patent Class: 438.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15283669', '15568657', '12579218', '15202905', '10821890']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8467800587278854
- 35 USC 102 Novelty (BERT): 0.495647204875605
- Combined Prediction Score: 0.8116667733426575
- Mean Citation Score: 197.074372
- Max Citation Score: 201.95663
- Similarity Product: 144.0810372610378

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