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Case study of low-Dk/Df bonding sheets | Flexible printed circuits (FPC)
- Bonding Solutions for FPCs Expected to Offer High-Speed Transmission
- Flexible printed circuits are used in touch panel modules, camera modules, and other modules that are used in products including smartphones as printed circuits that have the properties of being thin, light, and bendable.
With superior low dielectric properties, the low-Dk/Df bonding sheets from Dexerials suppress the degradation and delay of signals in the high-frequency bands in FPCs for high-speed transmission, which have an increasing number of layers, to support high-speed device communication.
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Application
Reduction in transmission loss in high-frequency bands
The sheets have sufficient adhesive strength for low dielectric board materials, such as LCP and modified polyimide. In addition, the dielectric constant of the sheet is lower than that of LCP and further reduces transmission delay.
Support for general FPC manufacturing processes, which facilitates introduction
Because the sheets can be bonded at temperatures under 200°C, they can be used in general FPC manufacturing processes and systems, requiring no new capital investment, thereby lowering introduction costs.
Secure bonding of copper foil and board materials for stable transmission performance
The sheets have superior adhesiveness to smoothed copper foil and LCP, which are difficult to bond, tightly securing components. This achieves a stable structure and the mechanical reliability required for high-speed transmission.
Product characteristics
Low dielectric properties suitable for high-speed transmission FPC
The sheets have good adhesive characteristics for the main materials of FPCs for high-speed transmission, such as liquid crystal polymer and modified polyimide, and contribute to the manufacturing of FPCs that support 5G (including millimeter wave) communication using existing equipment. They also suppress signal loss in high frequency and high temperature environments better than conventional bonding sheets, improving the stability of communication performance.
Product information
Optical Semiconductor
