Functional circuit board core board with the function of absorbing instant high-voltage electric pulse energy and manufacturing method thereof

Abstract

The invention provides a functional circuit board core board with the function of absorbing instant high-voltage electric pulse energy and a manufacturing method of the circuit board core board. The functional circuit board core board comprises an insulating layer, a basic core board body composed of a metal substrate on the top of the insulating layer and a metal substrate at the bottom of the insulating layer, a voltage resistance-variable functional material layer attached to the metal substrate on one side of the basic core board body, wherein small metal square block layers used for absorbing the instant high-voltage electric pulse energy and arranged at intervals are arranged all over the voltage resistance-variable functional material layer. Each small metal square block layer is composed of the small metal square blocks, wherein the length and the width of each small metal square block are 0.8 mm, the small metal square blocks are separated at transverse intervals and vertical intervals, and are arranged to form a small metal square block array in a mutual insulation mode, and the size of the transverse intervals and the size of the vertical intervals are 0.8 mm. Due to the fact that the electric energy absorption array is formed by the small metal square blocks, an instant electric energy absorption network can be easily built in application. The functional circuit board core board with the function of absorbing the instant high-voltage electric pulse energy is suitable for being arranged in all multi-layer circuit boards, devices on the circuit boards can have the shielding effect on the instant high-voltage electric pulse energy.

Description

technical field [0001] The invention relates to a functional circuit board core board capable of absorbing instantaneous high-voltage electric pulse energy and a manufacturing method, belonging to the technical field of electronic manufacturing, and providing a brand-new functional core board material for electronic circuit protection and PCB board manufacturing. Background technique [0002] In the circuit of electronic equipment, in order to prevent the impact of transient high-voltage electric pulse energy, such as static electricity, surge and transient electric potential field induced energy, most of them are equipped with absorption circuits for these transient energies, so as not to be destroyed by these transient energies sensitive electronic components. At present, these absorption circuits are completed by setting discrete components such as TVS tubes, ceramic varistors, polymer electrostatic suppressors, capacitors, etc. in the circuit. Since these discrete devic...

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Problems solved by technology

Also because of manufacturing cost considerations, it is impossible to provide comprehensive protection for all pins of all sensitive devices in the circuit

[0003] Chinese patent ZL201220475284.6 is a printed circuit board with all-round antistatic function. It adopts the method of surface-mounted polymer composite nano-voltage variable resistance soft film, which can completely solve the problem of single-layer circuit board or double-sided board and low-density small-scale wiring. The electronic circuit of the equipment can resist the impact of instantaneous high-voltage electric pulse energy, but for large-scale, high-density wiring electronic circuits and multi-layer circuit boards, this solution is obviously powerless

[0004] At present, there is a solution in foreign countries: embed the instantaneous pulse energy absorbing material in the interlayer of the circuit board, and then drill holes through the laser to connect the surface of the material to the protected component. This is a good solution, but there are insurmountable defects:

[0005] 1. Embedding materials into the board increases the risk of board delamination

[0006] 2. Because the maximum limit value of its material thickness is limited to 100um (it will lose its function if it exceeds)

[0009] 4. Difficult machining accuracy will inevitably bring about high manufacturing costs, which is not conducive to the promotion and application of all electronic equipment

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