PATENT CLAIM ANALYSIS

Application Number: 16090015
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-04
Patent Classification: ["355", "071000"]

Abstract:
A coaxial reticle alignment device, a lithography apparatus and alignment methods are disclosed. The coaxial reticle alignment device includes: illumination modules (A, B), each configured to provide an alignment light beam; a projection objective ( 8 ) under a reticle ( 5 ); a reference plate ( 9 ) on a workpiece stage ( 12 ), configured to carry a reference mark ( 10 ); and an image detection and processing module ( 11 ) under the reference plate ( 9 ). The reference mark ( 10 ) is located within a FOV of the image detection and processing module ( 11 ), and during movement of the workpiece stage ( 12 ), the image detection and processing module ( 11 ) receives the alignment light beam having passed sequentially through the reticle alignment mark ( 6, 7 ), the projection objective ( 8 ) and the reference mark ( 10 ), it captures images of the reticle alignment mark ( 6, 7 ) and the reference mark ( 10 ) which are processed to derive relative positional information between the reticle alignment mark ( 6, 7 ) and the reference mark ( 10 ) that enables the alignment of the reticle ( 5 ) with the workpiece stage ( 12 ). The coaxial reticle alignment device adopts dedicated separate illumination means, has a simple structure, allows easy operation and improves alignment efficiency.

Claim (Index 7):
The coaxial reticle alignment device according to  claim 6 , wherein the detector is a CCD or CMOS device.

Metadata:
- Claim Count in Document: 8.0
- Percentile: 97.0
- Lexical Diversity: 2.84444
- Patent Class: 355.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['11132260', '16089956', '10279924', '14002917', '10998596']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7007113494425895
- 35 USC 102 Novelty (BERT): 0.5025019140977229
- Combined Prediction Score: 0.6808904059081028
- Mean Citation Score: 253.42859
- Max Citation Score: 261.96512
- Similarity Product: 172.6292470179749

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