FEP (fluorinated ethylene propylene copolymer) Film Adhesive tapes are widely used in various stages of the semiconductor industry, mainly due to their excellent chemical stability, high temperature resistance, insulation, and low surface energy properties. Applications include high-temperature process protection, mask protection in photolithography, wafer dicing and grinding, packaging and testing, temporary fixing and handling, and special environmental applications.

1. High-Temperature Process Protection

  - In high-temperature processes during semiconductor manufacturing (such as diffusion, ion implantation, annealing, etc.), FEP tape can be used to protect non-processed areas of the wafer.

2. Mask Protection in Photolithography

 - During photolithography, FEP tape can be used as a temporary mask or overlay to protect specific areas from exposure or etching.

3. Wafer Dicing and Grinding

 - During wafer dicing or back grinding, FEP tape is used to hold the wafer in place, preventing breakage or displacement.

4. Packaging and Testing

 - Protecting the chip surface (e.g., gold wire bonding areas) during the packaging process.

 - As an insulating layer for temporary circuit isolation.

5. Temporary Fixing and Handling

  - FEP tape can be used as a non-adhesive carrier during chip handling or temporary fixing.

6. Special Environment Applications 

-  In vacuum or high-purity environments (such as inside semiconductor equipment cavities), FEP tape is used for sealing or insulation.