circuit board

Abstract

A circuit board, comprising a first metal layer, a first electromagnetic shielding layer, a circuit substrate, a second electromagnetic shielding layer and a second metal layer stacked in sequence; the circuit board also includes a conduction structure arranged along the stacking direction, The conduction structure is arranged around the periphery of the circuit board and electrically connected to the first metal layer and the second metal layer. A conductive metal layer and a second conductive metal layer. The circuit board has electrostatic protection performance.

Description

technical field [0001] The present invention relates to a circuit board. Background technique [0002] Electrostatic discharge refers to the transfer of charge caused by objects with different electrostatic potentials approaching or directly contacting each other. Sensitive circuit components can easily be damaged by electrostatic discharge. Especially for printed circuit boards, the existing printed circuit boards often use a large number of integrated circuit components, which have high electrostatic sensitivity, low withstand voltage, and weak electrostatic shock resistance, so they are easily damaged by electrostatic discharge, and even further affect. The normal operation of the entire electronic device system. Therefore, it is necessary to protect the printed circuit board from static electricity and release the static electricity in time. [0003] People in the industry usually use shielding films on both surfaces of the printed circuit board to shield against stat...

AI Technical Summary

Problems solved by technology

[0003] People in the industry usually shield the electrostatic shielding effect by covering the two surfaces of the printed circuit board with a shielding film layer. However, the electrostatic protection effect achieved by the above method does not completely prevent the circuit board from electrostatic interference.

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