The names of circuit boards include: circuit board, PCB board, aluminum substrate, high-frequency board,

 PCB, ultra-thin circuit board, ultra-thin circuit board, printed (copper etching technology) circuit board, etc.

Circuit boards make circuits miniaturized and intuitive, playing an important role in the mass production of 

fixed circuits and optimizing the layout of electrical appliances.

The names of circuit boards include: ceramic circuit boards, alumina ceramic circuit boards, aluminum nitride

 ceramic circuit boards, circuit boards, PCB boards, aluminum substrates, high-frequency boards, thick copper

 plates, impedance boards, PCBs, ultra-thin circuit boards, ultra-thin circuit boards, printed (copper etching technology) 

circuit boards, etc. Circuit boards make circuits miniaturized and intuitive, playing an important role in the mass

 production of fixed circuits and optimizing the layout of electrical appliances. A circuit board can be called a printed 

circuit board or a printed circuit board, with the English name "Printed Circuit Board" PCB (Flexible Printed Circuit Board)

 FPC circuit board (FPC circuit board, also known as flexible circuit board) is a highly reliable and excellent flexible printed

 circuit board made of polyimide or polyester film as the substrate. It has the characteristics of high wiring density, light

 weight, thin thickness, and good bending performance. The birth and development of flexible printed circuit boards

 (FPC, Soft and hard combination plates) - FPC and PCB, This has given birth to the new product of soft and hard 

combination boards. Therefore, a soft hard combination board refers to a circuit board with FPC and PCB characteristics

 formed by combining flexible circuit boards and hard circuit boards through pressing and other processes according to

 relevant process requirements.

Classification of circuit boards

Circuit boards can be divided into three major categories based on the number of layers: single panel, double-sided board, 

and multi-layer circuit board.

Firstly, there is a single panel, where on the most basic PCB, the parts are concentrated on one side and the wires are 

concentrated on the other side. Because wires only appear on one side, this type of PCB is called a single sided circuit

 board. Single panel production is usually simple and cost-effective, but the disadvantage is that it cannot be applied to

 products that are too complex.

Double panel is an extension of a single panel, and when single-layer wiring cannot meet the needs of electronic products, 

double-sided boards are used. Both sides are covered with copper and have wiring, and the wiring between the two layers 

can be connected through vias to form the required network connection.

Multilayer board refers to a printed board with three or more layers of conductive graphics and insulating materials

 between them, which are separated and laminated, and the conductive graphics between them are interconnected as

required. Multilayer circuit boards are a product of the development of electronic information technology towards high 

speed, multifunctional, large capacity, small volume, thinness, and lightweight.

Circuit boards can be divided into soft board (FPC), hard board (PCB), and soft hard combination board (FPCB) based on

 their characteristics.