The two technologies can combined into Rigid-Flex PCBs, as shown above image.

Rigid versus flex PCBs serve the same primary function—providing a platform for connecting electronic components. The main difference lies in their flexibility.

Rigid PCBs are made from solid and inflexible materials like fiberglass or a combination of fiberglass and epoxy. They’re great for applications where the board won’t undergo much bending or flexing.

Flex PCBs, on the other hand, are made from flexible plastic materials like polyimide. They can bend and twist, making them ideal for applications where the board must conform to a particular shape or fit into tight spaces.

Regarding design and manufacturing, the flexibility of flex PCBs allows for more creative and compact designs. However, rigid PCBs may be preferred when a stable and fixed form is required. The choice between the two depends on the specific requirements of the electronic device being built.