• •  It can detect defects with sizes as small as [min_optical_defect_size] micrometers and has a high throughput, allowing for fast inspection of large – area wafers.
  • Electron – Beam Inspection (EBI): Uses a focused electron beam to scan the wafer surface at a very high resolution. EBI can detect defects with sizes down to [min_ebi_defect_size] nanometers, making it suitable for inspecting advanced semiconductor devices with small feature sizes. However, it has a lower throughput compared to optical inspection.
• Inspection Speed: The optical inspection module can scan a [wafer_size] – millimeter wafer at a speed of [optical_scan_speed] square millimeters per second. The EBI module can scan a smaller area at a speed of [ebi_scan_speed] square micrometers per second, depending on the resolution requirements.
• Defect Detection Sensitivity: The system has a high defect detection sensitivity, with the ability to detect defects with a contrast ratio as low as [contrast_ratio]. This ensures that even subtle defects that could affect the device performance are identified.
• Data Storage and Analysis Capacity: Can store a large amount of inspection data, typically up to [data_storage_capacity] terabytes. The built – in data analysis software can process the inspection data quickly, using advanced algorithms to classify and analyze the defects, providing detailed reports on the wafer quality.

Functional Features:

• Multi – Mode Inspection: Offers multi – mode inspection capabilities, allowing operators to switch between different inspection techniques depending on the type of defects to be detected and the inspection requirements. For example, optical inspection can be used for a quick initial scan, and EBI can be used for a more detailed inspection of suspected defect areas.
• Automatic Defect Classification: The system has an automatic defect classification function that can classify defects into different categories, such as particles, scratches, and pattern defects, based on their shape, size, and other characteristics. This helps in quickly identifying the root cause of the defects and taking appropriate corrective actions.
• Real – Time Feedback to Process: Can provide real – time feedback on the inspection results to the semiconductor manufacturing process control system. If a high number of defects are detected in a particular area of the wafer or a specific process step, the process control system can adjust the process parameters immediately to prevent further defect generation.
• User – Friendly Interface: Features a user – friendly graphical interface that allows operators to easily set up inspection parameters, view inspection images, and analyze defect data. The interface is intuitive and requires minimal training, making it accessible to a wide range of users.

Application Scenarios:

• In – line Inspection during Manufacturing: The wafer inspection system is used for in – line inspection during various semiconductor manufacturing processes, such as deposition, etching, and lithography. By detecting defects early in the process, it allows for timely corrective actions to be taken, reducing the number of defective products and improving the overall yield of the manufacturing line.
• Final Inspection before Packaging: Before the semiconductor wafers are packaged into individual devices, a final inspection is performed using this system to ensure that the wafers are free from any remaining defects. This helps in delivering high – quality and reliable semiconductor products to the market.
• Research and Development: In semiconductor research and development laboratories, the inspection system is used to evaluate new materials and processes. It provides detailed information about the defect characteristics, helping researchers to optimize the materials and processes for better performance and yield.