What Are Polyimide Wafers?
Polyimide wafers are silicon or other substrates coated with a layer of polyimide, a high-performance polymer known for its excellent thermal stability, chemical resistance, and dielectric properties. They are widely used in semiconductor and electronics industries for various advanced fabrication processes.
Applications of Polyimide Wafers
- Passivation Layers: Protects circuitry from contaminants like moisture and particles.
- Interlayer Dielectrics: Provides electrical insulation in multilayer semiconductor devices.
- Flexible Electronics: Enables wearable devices, flexible displays, and biomedical sensors.
- Stress Buffer Layers: Reduces mechanical stress between layers to prevent damage.
- Heat-Resistant Coatings: Protects components during high-temperature processes.
Advantages of Polyimide Wafers
- High Thermal Stability: Withstands temperatures over 400°C.
- Electrical Insulation: High dielectric strength and low dielectric constant.
- Chemical Resistance: Resistant to acids, solvents, and other chemicals.
- Durability: Excellent mechanical strength and flexibility.
- Cost-Effective: Offers economical solutions for insulation and protection.