source:Industry News release time:2021-11-10 Article author:sznbone Popular:pcb
Single panel: the bottom board uses a single plastic board, the electronic components such as integrated circuits (ic) are concentrated on one side, and the copper wires are concentrated on the other side; the number of copper wires that can be made on a single panel is very small, and only the early circuit boards are used .
Double-sided board: A single plastic board is used as the bottom board, copper wires are made on the front and back of the bottom board, and "through holes" are drilled to let the copper wires pass through the plastic board from the front surface to the back, so that the copper wires on the front and rear surfaces can be connected to each other. Such as
Multilayer board: Make the required circuit on the front and back of
multiple double boards, then sandwich an insulating layer (plastic material)
between the two double boards, and then bond them to form a structure of several
layers of copper wires. Such as "Vias" are generally used to drill holes on the plastic board on the
double-sided board, but in the multilayer board, if you only want to connect
some internal circuits, you don't have to penetrate the entire plastic board, so
you can use "buried vias" Or "blind vias" penetrate only a few layers of plastic
boards.
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