Semiconductor Industry:
Sealing Innovation for Ultra-Clean Performance

Process Steps and Applications in the Semiconductor Industry – From Lithography to End Effector Solutions

Semiconductor manufacturing involves a highly intricate value chain, where each process step imposes specific demands on materials and components. A fundamental distinction can be made between several core process categories, each with unique environmental and operational challenges that directly impact the selection of sealing solutions:

• Wet chemical processes including wafer cleaning, wet etching, and photoresist development typically involve corrosive acids, bases, and solvents. Sealing materials used here must offer exceptional chemical resistance and maintain high purity to prevent contamination.
• Thermal processes such as oxidation, diffusion, and annealing operate at elevated temperatures, often above 300 °C, in controlled atmospheres. Seals in these environments must withstand thermal cycling, maintain mechanical integrity, and exhibit minimal outgassing.
• Plasma processes, including plasma etching and Plasma-Enhanced Chemical Vapor Deposition (PECVD), expose components to reactive ionized gases. These conditions require seals with high plasma resistance and low particle generation to ensure process stability and yield.
• Vacuum-based processes such as sputtering, Atomic Layer Deposition (ALD), and Chemical Vapor Deposition (CVD) demand seals that maintain vacuum integrity over extended periods. Low permeability, minimal extractables, and high cleanliness are further critical performance criteria.

Selecting the right sealing solution is not merely a matter of material compatibility; it requires a deep understanding of the process environment, equipment design, and contamination control requirements. The following section provides an overview of representative applications within the semiconductor industry.