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 4):
The dual-layer alignment apparatus of  claim 3 , wherein the fixed-frame mark comprises two marking points which, as a result of movement of the motion stage, are successively locatable in a same one of the fields of view of the second measuring device, where respective distances between the two marking points and the reference mark as well as an angle of rotation of a direction of the movement with respect to a line connecting the two marking points are calculated, based on which the second relative positional relationship between the fixed-frame mark and the reference mark is obtainable.

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): 0.719154021769825
- 35 USC 102 Novelty (BERT): 0.4875059945866389
- Combined Prediction Score: 0.6959892190515065
- Mean Citation Score: 187.143904
- Max Citation Score: 208.51549
- Similarity Product: 149.72494594257356

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