UHP GAS-SYS TECHNOLOGY PTE. LTD

Semiconductor Industry

We design and manufacture Ultra High Purity (UHP) gas boxes tailored for the unique requirements of CVD, PECVD, ALD, and Etch processes. Each application has distinct gas characteristics, flow control needs, and safety considerations — and our systems are engineered to address them with precision.

Chemical Vapor Deposition (CVD)
  1. Gas Nature: Flammable and oxidizing process gases such as silane and ammonia.
  2. Key Features:
    • Continuous high-flow operation with large charge volumes.
    • Heated systems for thermally sensitive precursors.
    • Durable stainless-steel construction with high-purity seals.
    • Simplified automation for straightforward process integration.
  3. Applications: Uniform thin film deposition for dielectrics and conductive layers.
Plasma-Enhanced CVD (PECVD)
  1. Gas Nature: Flammable, plasma-reactive gases such as silane, ammonia, and hydrocarbons.
  2. Key Features:
    • Operates in pulsed or steady flow modes.
    • Dual purge systems for contamination control.
    • Mild heating to stabilize reactive gases.
    • RF interlocks and gas leak detection integrated for safety.
  3. Applications: Deposition of dielectric and passivation layers enhanced by plasma activation.
Atomic Layer Deposition (ALD)
  1. Gas Nature: Pyrophoric and pressure-sensitive gases such as ozone, hydrogen, and ammonia.
  2. Key Features:
    • Ultra-low internal volumes to minimize dead space.
    • High-speed pulsed valve timing for atomic-scale film growth.
    • Multi-step purge and isolation to prevent cross-contamination.
    • Recipe-controlled automation with strict sequencing.
  3. Applications: Sub-nanometer coating for advanced 3D device architectures.
Etch Gas Boxes
  1. Gas Nature: Highly toxic and corrosive gases such as chlorine, fluorine-based gases, and oxygen.
  2. Key Features:
    • Rapid flow modulation for precise etching cycles.
    • Strong purge and fast divert systems for toxic exhaust handling.
    • Corrosion-resistant materials like Hastelloy and PFA linings.
    • Built-in sensors, emergency venting, and double containment.
  3. Applications: Plasma and dry etching of critical semiconductor structures.
Engineering & Testing Capabilities

We provide end-to-end solutions, including:

  • P&ID Generation – Complete process and instrumentation diagrams.
  • System Layout & Design – Compact, modular, and fab-optimized.
  • Custom Manufacturing – Precision orbital welding, UHP cleaning, and assembly.
  • System Testing – Helium leak detection, purge validation, and pressure decay testing.
  • Component Characterization – Flow dynamics, valve actuation, and material compatibility testing.
Why Our Systems Stand Out
  • Process-Specific Optimization – Gas boxes designed for CVD, PECVD, ALD, and Etch needs.
  • Safety & Compliance – Built to SEMI S2/S6, CE, and global safety standards.
  • High Reliability – Extended component life cycles for long-term performance.
  • Future-Ready – Scalable to next-generation wafer sizes and fab requirements.