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 11):
A dual-layer alignment method, comprising:\n providing a fixed frame and, disposed thereon, a first measuring device and a mark plate, the mark plate having a fixed-frame mark; providing a motion stage and, disposed thereon, a reference mark, a motion-stage mark and a second measuring device; measuring a first relative positional relationship between the reference mark and the motion-stage mark by the first measuring device; measuring a second relative positional relationship between the reference mark and the fixed-frame mark by the second measuring device; deriving a third relative positional relationship between the motion-stage mark and the fixed-frame mark from the first and second relative positional relationships; and displacing the motion stage to a target location based on the third relative positional relationship.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 97.0
- Lexical Diversity: 2.83871
- Patent Class: 356.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15756272', '15568657', '15219412', '15202905', '11377282']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6955749453091365
- 35 USC 102 Novelty (BERT): 0.4802315522904573
- Combined Prediction Score: 0.6740406060072687
- Mean Citation Score: 187.143904
- Max Citation Score: 208.51549
- Similarity Product: 157.91202843022526

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