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 21):
The measurement system of  claim 20 , wherein the position acquisition module further comprises an optoelectronic system configured to receive the reference beam and produce a reference optoelectronic signal, and the optoelectronic system is further configured to receive the measuring beam and produce a measuring optoelectronic signal, and wherein the relative positional data of the alignment sensor with respect to the target object are obtained based on the reference optoelectronic signal and the measuring optoelectronic signal.

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): 0.8452268834516756
- 35 USC 102 Novelty (BERT): 0.5075620603595961
- Combined Prediction Score: 0.8114604011424678
- Mean Citation Score: 197.074372
- Max Citation Score: 201.95663
- Similarity Product: 125.85591690341352

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