Multilayer circuit boards, is not all power must be placed on the inner layer
The board is divided into single-sided and double-sided, but the high-end electronic products, due to product space design constraints, except for the number of wiring board to determine the difficulty of processing and processing prices, ordinary circuit board points single-sided and double- Surface wiring, the internal stack can be multi-layer lines, the production process, making a good layer of each layer, and then through the optical device positioning, pressure, so multilayer lines stacked in a circuit board. Commonly known as multi-layer circuit boards.
Double panel is the middle layer of media, both sides are the line layer. Multilayer board is a multi-layer wiring layer, between the two layers is the dielectric layer, the dielectric layer can be done very thin. The multilayer circuit board has at least three conductive layers, two of which are on the outer surface, and the remaining layer is integrated in the insulating plate. The electrical connection between them is usually achieved by plating through holes in the cross section of the circuit board.
In addition, the surface of course can also put the ground, power, just because the device occupied the area of ??the reasons, not a complete layer. So many devices may not be able to take electricity.
Multilayer board, then generally close to the top layer or bottom layer of the place to put a complete power, formation, mainly to get good anti-electromagnetic interference, improve signal integrity.
Multi-layer circuit board, not all power must be placed on the inner layer, the internal layer can also be traced.
