Rigid Flex Board
Rigid Flex Board Manufacturer & Assembly – One-stop service
The rigid-flex PCB is usually on one or two rigid PCBs and contains the flexible PCB that is essential for the whole. Laminated flexible PCB layer in multilayer rigid PCB for special electrical requirements or to extend beyond the rigid circuit to accommodate the Z-plane circuit. These products are widely used in electronic devices where compression weight and volume are critical, and high reliability, high-density assembly, and excellent electrical characteristics are required.
Multilayer rigid-flex PCBs bond together the ends of many single or double-layer flexible PCBs to form a rigid part. While the middle does not bond into a flex part, and the Z-face of the rigid part uses metalized holes. Multilayer rigid board compressible flexible circuit layer. In ultra-high package density applications, many people use this type of PCB, such as excellent electrical characteristics, high reliability, and tight volume constraints
A range of hybrid multilayer flexible PCB assemblies for military avionics that is critical to weight and volume. In order to meet the specified weight and volume limits, the internal package density must be extremely high. In addition to high circuit density, shield all signal transmission lines in order to minimize crosstalk and noise. To use a shielded separate wire, it is virtually impossible to economically package it into the system.
In this way, interconnect can use hybrid multilayer flexible PCB. This component encapsulates the shielded signal line in a flat stripline flexible PCB, which in turn is an integral part of a rigid PCB. At higher levels of operation, after fabrication, the PCB forms a 90° S-bend that provides a z-plane interconnect path and can be soldered at x, y, and z plane vibration stresses. Eliminate stress-strain on the top.
Advantages of rigid-flex PCB：
1. Effectively save space on the board and save the use of connectors or HotBar process.
The combination of hard and soft boards eliminates the space required to use connectors or HotBar processes. For some boards with high-density requirements, the space for one connector is less. Just like a treasure.
In this way, you can eliminate the cost of the connector or the cost of the HotBar process. In addition, eliminate the connector to bring the distance between the two boards closer.
2. Shorten the distance of signal transmission and increase the speed, which can effectively improve the reliability.
Reduce signal transmission distance and signal transmission attenuation between different media. Generally, the circuit on the PCB is made of copper and the contact terminals of the connector and solder pins are gold plated. Tin, and need to use solder paste soldered on the PCB, the signal transmission between different media will inevitably have some attenuation. At the same time, if you use a soft and hard composite board, these media also be reduced. The signal transmission capability can also be relative. Therefore, the improvement of some products with high signal accuracy requirements will help improve their reliability.
3. Simplify product assembly and save assembly time.
Soft and hard composite panels reduce man-hours and reduce assembly man-hours. This eliminates the need to insert the soft board into the connector assembly process or save the HotBar process. The reduction in BOM also reduces the cost of parts management and inventory, thus reducing management.