PATENT CLAIM ANALYSIS

Application Number: 16097500
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-05
Patent Classification: ["356", "401000"]

Abstract:
A dual-layer alignment apparatus is disclosed which includes: a fixed frame ( 40 ) and, disposed thereon, a first measuring device ( 50 ) and a mark plate ( 41 ), the mark plate ( 41 ) having a fixed-frame mark ( 20 ); and a motion stage ( 60 ) and, disposed thereon, a reference mark ( 30 ), a motion-stage mark ( 70 ) and a second measuring device ( 10 ). The first measuring device ( 50 ) is configured to measure a relative positional relationship between the reference mark ( 30 ) and the motion-stage mark ( 70 ), the second measuring device ( 10 ) is configured to measure a relative positional relationship between the reference mark ( 30 ) and the fixed-frame mark ( 20 ), from which a final relative positional relationship between the motion-stage mark ( 70 ) and the fixed-frame mark ( 20 ) is derived, based on which the motion stage ( 60 ) is displaced to a target location. A corresponding dual-layer alignment method is also disclosed. In the apparatus, the motion stage ( 60 ) is the only movable component. Additionally, coordinate relationships can be calibrated in a static manner in order to immunize calibration accuracy from positioning accuracy of the motion stage ( 60 ), such that the alignment accuracy is improved. Further, a dual- or multi-lens design can be employed to allow additional improvements in flexibility and alignment efficiency.

Claim (Index 6):
The dual-layer alignment apparatus of  claim 5 , wherein the fixed-frame mark comprises a first calibration mark configured for static calibration of a coordinate relationship between the second measuring device and the fixed frame, and wherein the reference mark comprises a second calibration mark configured for static calibration of a coordinate relationship between the first measuring device and the motion stage.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 97.0
- Lexical Diversity: 2.83871
- Patent Class: 356.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15756272', '15568657', '15219412', '15202905', '11377282']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7194273589993965
- 35 USC 102 Novelty (BERT): 0.4861376193057378
- Combined Prediction Score: 0.6960983850300306
- Mean Citation Score: 187.143904
- Max Citation Score: 208.51549
- Similarity Product: 151.97422951555848

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

Dataset: test