How to draw double-panel single-chip? The How is the connection between the board and the board?
Automatic routing can be used. As for the patch components, if not too much, it is best on the top floor, that is, on the same layer, so easy to machine welding. If the patch component is too much, you can also on the bottom, that is, both sides can be placed.
The holes used in the double panels are metallized holes, that is, conductive holes, which can connect two layers of wires. In fact, in the automatic routing do not have to consider these, and as long as the double-sided painting, in the processing of these are not to worry about.
Through the hole to connect the two panels of the circuit? This is called two layers of wire, the top and bottom. The two wires can be connected through the through-hole pads (and a patch pad) and vias. It is best to use the through-hole pads, so you can minimize the number of vias.