Where are the differences between rigid and flexible printed circuit board designs?

Many people have heard the English abbreviation for "PCB". But what does it mean? In fact, simply, it is printed circuit board. It will appear in almost every kind of electronic equipment. If there are electronic components in a particular device, they are mounted on PCB of different sizes. In addition to fixing various small parts, the main function of PCB is to provide the electrical connections between the parts above. rigid flex circuits

As electronic equipment becomes more and more complex, more and more parts are needed, and the lines and parts on the PCB are becoming more and more intensive. Bare panels (with no parts on it) are also often referred to as "printed circuit boards ". The substrate of the board itself is made of insulation, heat insulation and material which is not easily bent. The fine lines can be seen on the surface of the material is copper foil, copper foil is covered in the original on the board, and in the manufacturing process partly etched off, left to the part of a network of thin wires. These lines are called wires (conductor pattern), or wiring, and are used to provide circuit connections for parts on the PCB. rigid flex circuits
Usually the colors of PCB are green or brown, which is the color of solder mask. It is an insulated protective layer that protects the copper wire and prevents the parts from being soldered to the wrong place. A layer of screen printing is also printed on the solder resist. Usually, letters and symbols (mostly white) are printed on it to mark the location of the parts on the board. The screen printing surface is also called the legend.rigid flex circuits