4 layer flex pcb（2）
A 4 layer flex PCB (Printed Circuit Board) is a type of flexible circuit board that consists of four layers of conductive material sandwiched between layers of insulating material.
The layers are interconnected by vias, which are small holes drilled through the layers and filled with conductive material.
The role of a 4 layer flex PCB is to provide a flexible and reliable interconnect solution for electronic devices that require high-density wiring and compact size. The four layers of conductive material allow for more complex and dense circuitry to be designed,
while the flexibility of the board allows it to be bent or twisted to fit into tight spaces.
The four layers of a 4 layer flex PCB typically include two signal layers, one power layer, and one ground layer.
The signal layers carry the electrical signals between components,
while the power and ground layers provide power and ground connections to the components.
Overall, the role of a 4 layer flex PCB is to provide a flexible and reliable interconnect solution for electronic devices that require high-density wiring and compact size.