As a representative of precision manufacturing, the semiconductor industry has extremely stringent requirements for air compressors, which need to meet the core requirements of ultra-pure gas supply, extreme stability, low pollution emissions and intelligent control. The following professional analysis is carried out from the three dimensions of technical performance, system integration and operation and maintenance:
1. Technical Performance Requirements
- gas quality control
- oil content: it needs to reach ≤ 0.001 mg/m & sup3;(ISO 8573-1 Class 0 standard) to avoid oil contamination on the wafer surface.
- Dust content: It needs to be filtered to a particle size of 0.1μm to prevent particles from causing defects in the lithography pattern.
- Humidity control: The pressure dew point shall be ≤-40 ℃ to avoid condensation of water vapor in the vacuum chamber.
- Pressure and Flow Stability
- pressure fluctuations need to be controlled within ± 0.01MPa to ensure the precise action of pneumatic valves and manipulators.
- The flow regulation range should cover 30%-100 load to meet the gas demand of different process modules.
- Vibration and Noise Control
- the vibration speed of the equipment should be ≤ 1 mm/s to avoid micro-vibration interference to precision equipment such as lithography machines.
- Noise shall be ≤ 65dB(A) to meet the requirements of clean room environment.
2. System Integration Requirements
- cleanroom compatibility
- the equipment shell shall be made of 304 stainless steel or anodized aluminum with surface roughness ≤ 0.8 μm to prevent particles from falling off.
- A high efficiency air filter (HEPA) is required to filter particles ≥ 0.3 μm with an efficiency ≥ 99.97%.
- piping system design
- 316L stainless steel electrolytic polishing pipe shall be used for the pipeline, with inner wall roughness ≤ 0.4 μm to reduce particle adhesion.
- Automatic drainage system shall be provided to avoid gas pollution caused by condensate accumulation.
- Intelligent monitoring function
- it is necessary to integrate the Internet of things module to realize the remote monitoring of pressure, temperature, flow and other parameters.
- With fault warning function, it can predict hidden dangers such as filter blockage and motor overheating 24 hours in advance.
3. operation and maintenance requirements
- life management of wearing parts
- the replacement period of the air filter element shall be ≥ 4000 hours, and the oil core shall be ≥ 8000 hours (no need to replace without oil machine).
- The lubricating oil replacement period shall be ≥ 10000 hours (semiconductor grade synthetic oil shall be used).
- Maintenance Convenience Design
- quick-release filter element shall be configured, and the replacement time shall be ≤ 5 minutes.
- A visual maintenance interface is required to display key information such as filter element life and operating time.
- emergency response capability
- the standby machine interface needs to be configured to realize dual-machine hot standby, and the failure switching time is less than or equal to 30 seconds.
- UPS power supply shall be provided to ensure safe shutdown of equipment in case of power failure.
Typical application scenarios
- wafer cleaning: Ultra-pure nitrogen shall be provided, the pressure shall be ≥ 0.6MPa, and the flow rate shall be ≥ 10m & sup3;/min.
- Lithography machine air bearing: A gas source with stable pressure shall be provided, and the pressure fluctuation shall be ≤ ± 0.005MPa.
- Chemical Vapor Deposition (CVD): High-purity argon is required, and the oxygen content is ≤ 1ppm.
Summary of technical value
semiconductor industry air compressor needs to pass ultra-pure gas processing technology, precision pressure control system, intelligent monitoring platform and other core technologies to achieve clean, stable and intelligent the gas supply is guaranteed. Its value is not only reflected in improving wafer yield and extending equipment life, but also in helping semiconductor enterprises to achieve the dual goals of efficient production and quality control by building a reliable gas supply system to ensure the stability of core processes such as lithography and etching.
