山下マテリアル List of Products and Services

The "high-speed transmission multilayer flexible substrate" reduces reflection points by integrating FPC and rigid substrates. It is suitable for high-frequency applications in the 10-30GHz range and allows for high-density RF lines compared to rigid substrates, making it effective for miniaturization of products. It also supports wire bonding and can have metal or ceramic reinforcement plates attached for heat dissipation measures. 【Features】 ■ Heat dissipation measures can be implemented by attaching reinforcement plates made of metal or ceramics ■ Miniaturization is possible due to high-density RF lines ■ Compatible with wire bonding *For more details, please refer to the PDF document or feel free to contact us.

The "Card Edge Compatible Multi-Layer Flexible Printed Circuit Board (FPC)" provided by our company is a multi-layer flexible circuit board designed to accommodate card edge connectors with double-sided contacts. By reducing the connection points between printed circuit boards and flexible circuit boards, a stable impedance line is formed, which is expected to improve signal integrity at high frequencies of 10 GHz and above. The substrate uses polyimide film, and soft resist ink is used as the insulating material, allowing for flexibility, making it suitable for installation in tight spaces. 【Features】 ■ A partially bendable structure that has similar functionality to rigid-flex boards, enabling the formation of highly reliable vias. ■ A structure that integrates flexible and rigid parts without connection points or via transitions, allowing for the formation of stable impedance lines. ■ High-density wiring is possible with 100μm pitch wiring and vias with a land diameter of 300μm or less. ■ Integration of connections between boards contributes to a reduction in assembly labor. *For more details, please refer to the PDF materials. Feel free to contact us with any inquiries.

"ACF connection" allows for the simultaneous connection of multiple electrodes on a substrate through heating and pressurization. It enables reliable connection at fine pitch with low cost. Additionally, compared to connection methods such as soldering or connectors, it offers lightweight, thin design, and low-temperature mounting around 180°C. 【Features】 ■ Simultaneous connection of multiple electrodes on a substrate through heating and pressurization ■ Reliable connection at fine pitch achieved at low cost ■ Lightweight, thin design, and low-temperature mounting around 180°C *For more details, please refer to the PDF document or feel free to contact us.