PATENT CLAIM ANALYSIS

Application Number: 15902106
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-08
Patent Classification: ["348", "087000"]

Abstract:
An active real-time characterization system for detecting unwanted elements and/or physical imperfections on a semiconductor wafer during manufacturing. Infrared and visible light sources output beams of coherent light directed at a particular area on the semiconductor wafer via associated polarizing control elements. A series of cameras, including a visible light camera, a visible light second harmonic generation camera, an infrared camera, an infrared second harmonic generation camera, a sum-frequency camera and a third-order camera are configured to receive return beams of light via associated polarizing control elements. The polarizing control elements include a polarizer, a quarter wave plate and/or a half wave plate. A processor processes the signals received from the cameras to detect unwanted elements and/or physical imperfections on the semiconductor wafer.

Claim (Index 10):
An active real-time characterization system for detecting unwanted elements or physical imperfections on a semiconductor wafer during manufacturing, comprising:\n an infrared light source for outputting a beam of coherent infrared light and an associated polarizing control element, the infrared light source configured to direct the beam of coherent infrared light at a particular area on the semiconductor wafer through the associated polarizing control element; a first visible light source for outputting a first beam of coherent visible light and an associated polarizing control element, the first visible light source configured to direct the first beam of coherent visible light at the same particular area on the semiconductor wafer through the associated polarizing control element; a visible light camera and a visible light second harmonic generation camera each having an associated polarizing control element, the visible light camera and the visible light second harmonic generation camera each configured to receive a first predetermined return beam of light from the same particular area on the semiconductor wafer through the associated polarizing control element; an infrared camera and an infrared second harmonic generation camera each having an associated polarizing control element, the infrared camera and the infrared second harmonic generation camera each configured to receive a second predetermined return beam of light from the same particular area on the semiconductor wafer through the associated polarizing control element; and a processor coupled to receive first signals from the visible light camera, the visible light second harmonic generation camera, the infrared camera, and the infrared second harmonic generation camera, the processor configured to process the first signals to detect unwanted elements or physical imperfections on the semiconductor wafer.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 88.0
- Lexical Diversity: 1.97059
- Patent Class: 348.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15902076', '15901972', '15902167', '15711626', '14526246']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6290858746575628
- 35 USC 102 Novelty (BERT): 0.5234170176564862
- Combined Prediction Score: 0.6185189889574552
- Mean Citation Score: 320.365046
- Max Citation Score: 332.49133
- Similarity Product: 275.806103063637

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