Benefits of Flex Rigid PCBs：

Space requirements can be minimized by applying 3D

By removing the need for connectors and cables between the individual rigid parts the board size and overall system weight can be reduced.

By maximizing space, there is often a lower count in parts.

Less solder joints assure higher connection reliability.

Handling during assembly is easier in comparison with flexible boards.

Simplified PCB assembly processes.

Integrated ZIF contacts provide simple modular interfaces to the system environment.

Test conditions are simplified. A complete test prior to installation becomes possible.

Logistical and assembly costs are significantly reduced with flex-rigid boards.

It is possible to increase the complexity of mechanical designs, which also improves the degree of freedom for optimized housing solutions.