Printed circuit board and method of making the same

Abstract

The invention discloses a printed circuit board, which is characterized in that a copper-foil routing comprises a first copper-foil routing and a second copper-foil routing, wherein two sides of the first copper-foil routing are respectively provided with two network copper-exposed weld pads, the two network copper-exposed weld pads are respectively connected with two ends of the second copper-foil routing, an insulation layer covering the first copper-foil routing is arranged between the two network copper-exposed weld pads, the insulation layer is provided with a conductive layer which is connected with the two network copper-exposed weld pads, so that the second copper-foil routing is conducted, and the conducted second copper-foil routing is intersected with the first copper-foil routing; and by changing a wire jumper way of the traditional printed circuit board, the network copper-exposed weld pads are arranged at positions needing the wire jumper, the insulation layer and the conductive layer are sequentially printed between the two network copper-exposed weld pads to complete the wire jumper design of the first copper-foil routing and the second copper-foil routing, so that the metal insert or through hole in a traditional way can be avoided, the production cost is greatly reduced, and the printed circuit board is simple in structure. The invention also discloses a manufacturing method of the printed circuit board.

Description

technical field [0001] The invention relates to the technical field of electronic products, in particular to a printed circuit board and a manufacturing method thereof. Background technique [0002] Printed Circuit Board (PCB for short), also known as printed circuit board or printed circuit board, is a support for electronic components and a provider of electrical connections for electronic components. [0003] Classified according to the number of circuit layers, PCB boards are divided into single-sided boards, double-sided boards and multi-layer boards. Among them, the parts of the single-sided board (Single-SidedBoards) are concentrated on one side, and the wiring is concentrated on the other side; over another wiring, it is necessary to use jumper techniques such as figure 1 As shown, set copper foil on both sides of one of the PCB traces 11', and set a metal insert 13' on the copper foil to realize the jumper, so that the other PCB trace 12' crosses the PCB trace 11 ...

AI Technical Summary

Problems solved by technology

Among them, the parts of the single-sided board (Single-SidedBoards) are concentrated on one side, and the wiring is concentrated on the other side; over another wiring, it is necessary to use jumper techniques such as figure 1 As shown, set copper foil on both sides of one of the PCB traces 11', and set a metal insert 13' on the copper foil to realize the jumper, so that the other PCB trace 12' crosses the PCB trace 11 `, this method of using the metal plug-in 13` as a conductive connection wire increases the production cost of the PCB board

For double-sided boards (Double-SidedBoards), there are wiring on both sides, but to use the wires on both sides, there must be an appropriate circuit connection between the two sides. The "bridge" between such circuits is called via hole ( via); The via hole is a small hole filled or coated with metal on the PCB, which can be connected to the wires on both sides, such as figure 2 As shown, in a double-sided board, there are PCB traces 11`, 12` on one side, and PCB traces 14` on the other side, wherein the PCB traces 12` are realized through the via holes 15` set on the board. The connection with the PCB trace 14` on the other side also makes the cost of the PCB board high

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