PATENT CLAIM ANALYSIS

Application Number: 16069198
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["355", "072000"]

Abstract:
A dynamic-magnetic steel magnetic levitation double-workpiece-stage vector arc switching method and apparatus based on wireless energy transmission, falling within the semiconductor manufacturing equipment technology. The apparatus comprises a support frame ( 1 ), a balance mass block ( 2 ), magnetic levitation workpiece stages ( 4 a,  4 b ), a workpiece stage measurement apparatus, wireless energy transmission apparatuses ( 5 a,  5 b ) and a wireless energy receiving apparatus ( 406 ), wherein the two workpiece stages work between a measurement site ( 11 ) and an exposure site ( 12 ); a laser interferometer ( 6 ) is used to measure the positions of the workpiece stages; the wireless energy transmission apparatuses ( 5 a,  5 b ) are used to provide energy for a sensor ( 407 ) in a micro-drive stage; the workpiece stages are driven using a magnetic levitation planar electrical motor; and during a double-workpiece-stage switching process, the planar electrical motor is used to drive the two workpiece stages so as to achieve single-beat arc quick switching. By using the method and apparatus, the problem that an existing stage switching scheme has many beats, a long track, many start-stop links and a long time for stabilization is solved, thereby reducing the stage switching links, shortening the stage switching time, and improving the productivity of a lithography machine.

Claim (Index 2):
A vector arc revolve switching apparatus for a moving-magnet-steel magnetic-levitation double-workpiece-stage system based on wireless energy transmission, comprising:\n a support frame ( 1 ), a balance mass block ( 2 ), a first wafer stage ( 4 a ), a second wafer stage ( 4 b ); wherein the balance mass block ( 2 ) is positioned above the support frame ( 1 ), and a stator of macro movement planar motor ( 3 ) is mounted on an upper surface of the balance mass block ( 2 ); wherein the first wafer stage ( 4 a ) and the second wafer stage ( 4 b ) are arranged above the stator of macro movement planar motor ( 3 ); wherein the first wafer stage ( 4 a ) and the second wafer stage ( 4 b ) are operable between a measurement position ( 11 ) and an exposure position ( 12 ), a metrology frame ( 10 ) is supported on the support frame ( 1 ) by airbearing ( 9 ) and six laser interferometers ( 6 ) are installed on the metrology frame, and the first wireless energy transmitter apparatus ( 5 a ) and the second wireless energy transmitter apparatus ( 5 b ) are installed above the first wafer stage ( 4 a ) and the second wafer stage ( 4 b ) respectively; wherein the first wafer stage ( 4 a ) and the second wafer stage ( 4 b ) are both six-DOF (degree of freedom) magnetic levitation micro movement stage, which comprises a chuck ( 401 ), a sucker ( 402 ), a micro movement planar motor ( 403 ), an anti-collision frame ( 404 ), a mover of the macro movement planar motor ( 405 ), wireless energy receivers apparatus ( 406 ) and a leveling focusing sensor ( 407 ); wherein the micro movement planar motor ( 403 ) comprises a mover of micro movement planar motor ( 408 ) and a mover of gravity compensator ( 409 ); wherein the sucker ( 402 ) is mounted on the chuck ( 401 ), and four corners of the chuck ( 401 ) are provided with four wireless energy receiver apparatus ( 406 ) and four leveling focusing sensors ( 407 ); wherein the chuck ( 401 ) is fixed to the micro movement planar motor ( 403 ), and the anti-collision frame ( 404 ) is mounted around the micro movement planar motor ( 403 ); wherein the mover of macro movement planar motor ( 405 ) is arranged below the anti-collision frame ( 404 ); wherein the mover of macro movement planar motor ( 405 ) is formed by staggered arrangement of magnetic steel arrays ( 411 ) and the stator of macro movement planar motor ( 3 ) is arranged in herringbone arrangement of the coil arrays ( 412 ).

Metadata:
- Claim Count in Document: 1.0
- Percentile: 95.0
- Lexical Diversity: 2.26606
- Patent Class: 355.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13228254', '13727229', '14646160', '14273887', '15599785']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6423841377695334
- 35 USC 102 Novelty (BERT): 0.4695273298896303
- Combined Prediction Score: 0.6250984569815432
- Mean Citation Score: 173.41706200000004
- Max Citation Score: 177.33476000000005
- Similarity Product: 130.41934294440512

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