Single-sided flex circuits
Single-sided flexible circuits have a single conductor layer made of either a metal or conductive (metal filled) polymer on a flexible dielectric film.
Double access or reverse bared flexible circuits
Double access flex, also known as back bared flex, are flexible circuits having a single conductor layer but which is processed so as to allow access to selected features of the conductor pattern from both sides.
Sculptured flexible circuits
Sculptured flex circuits are a novel subset of normal flexible circuit structures.
Double-sided flexible circuits
Double-sided flex circuits are flex circuits having two conductor layers.
Multi-layer flexible circuits
Flex circuits having three or more layers of conductors are known as multi-layer flex circuits.
Rigid-flex circuits are a hybrid construction flex circuit consisting of rigid and flexible substrates which are laminated together into a single structure.
Rigid PCB’s are primarily made with FR-4 glass epoxy as the primary insulating substrate. PCB’s can be single sided, double sided or multi-layer.