Ceramic Window

1. Product Overview

Ceramic Window is a high-purity, high-insulation precision component designed for semiconductor plasma process and vacuum chamber equipment. As a critical optical and electrical isolation part of process chambers, it is fabricated from high-density advanced ceramic materials with ultra-low impurity content. The component features excellent structural integrity and surface flatness, providing stable dielectric isolation and reliable light/signal transmission conditions for wafer etching, deposition and other core fabrication processes.

2. Core Function & Application

• It serves as a transparent insulating barrier for semiconductor process chambers, isolating high-frequency electric fields and ensuring stable plasma generation during PVD, CVD and etching processes.
• It allows optical detection and signal transmission for in-situ process monitoring, while blocking external dust and impurities to maintain internal chamber cleanliness and vacuum tightness.

3. Key Performance Requirements & Advantages

Since Ceramic Window is exposed to high-energy plasma bombardment, high-strength electric fields and corrosive process gases for long-term operation, it meets strict semiconductor-grade performance criteria:

• Superior Dielectric Strength & Insulation: Possesses outstanding electrical insulation performance, effectively resisting high-voltage electric field impact and preventing electric leakage or breakdown to ensure continuous process stability.
• Excellent Plasma & Chemical Resistance: Tolerates long-term plasma sputtering and erosion of fluorine-based and chlorine-based corrosive gases, avoiding surface degradation, particle shedding and service life attenuation.
• High Purity & Dimensional Stability: Made of ultra-high-purity ceramic raw materials with low thermal expansion, maintaining stable structural size and flatness under thermal cycling and harsh working conditions to guarantee long-term sealing and isolation accuracy.

4. Product Variants

The product line includes multiple sizes and structural designs to fit different semiconductor equipment and process requirements:

• Standard flat ceramic windows for conventional chamber insulation and optical monitoring applications.
• Precision customized ceramic windows with special thickness and tolerance for high-precision plasma process tools.
• Sealed ceramic window components with reserved mounting structures for specific vacuum chamber assembly demands