PATENT CLAIM ANALYSIS

Application Number: 16047987
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-01
Patent Classification: ["250", "310000"]

Abstract:
Systems and methods are provided for compensating dispersion of a beam separator in a single-beam or multi-beam apparatus. Embodiments of the present disclosure provide a dispersion device comprising an electrostatic deflector and a magnetic deflector configured to induce a beam dispersion set to cancel the dispersion generated by the beam separator. The combination of the electrostatic deflector and the magnetic deflector can be used to keep the deflection angle due to the dispersion device unchanged when the induced beam dispersion is changed to compensate for a change in the dispersion generated by the beam separator. In some embodiments, the deflection angle due to the dispersion device can be controlled to be zero and there is no change in primary beam axis due to the dispersion device.

Claim (Index 1):
A charged particle beam apparatus comprising:\n a source configured to provide a primary charged particle beam; a source conversion unit configured to form a plurality of parallel images of the source using a plurality of beamlets of the primary charged particle beam; a first projection system with an objective lens and configured to project the plurality of parallel images onto a sample and therefore form a plurality of primary probe spots thereon with the plurality of beamlets; a beam separator configured to separate the plurality of beamlets and a plurality of secondary charged particle beams generated from the sample by the plurality of primary probe spots; a detection device with a plurality of detection elements; a secondary projection system configured to focus the plurality of secondary charged particle beams onto the detection device and form a plurality of secondary probe spots thereon, and the plurality of secondary probe spots are detected by the plurality of detection elements; and a first dispersion device arranged upstream of the beam separator and configured to generate a plurality of first primary beam dispersions to the plurality of beamlets, wherein the plurality of first primary beam dispersions is adjusted to cancel impacts of a plurality of second primary beam dispersions generated by the beam separator to the plurality of primary probe spots,\n wherein the first dispersion device comprises a first electrostatic deflector and a first magnetic deflector respectively exerting a first force and a second force on each of the plurality of beamlets, the first force and the second force are opposite to each other and form the corresponding first primary beam dispersion.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 95.0
- Lexical Diversity: 2.1129
- Patent Class: 250.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15065342', '15078369', '15365145', '15216258', '15417360']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7564257475173007
- 35 USC 102 Novelty (BERT): 0.5222867787415212
- Combined Prediction Score: 0.7330118506397227
- Mean Citation Score: 338.89829
- Max Citation Score: 355.7284
- Similarity Product: 314.92613360259537

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