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Composite metal foil and circuit board

A composite metal and circuit board technology, which is applied to circuit devices, printed circuit components, circuit electrostatic discharge protection, etc., can solve the problems of embedded resistance function failure and breakdown, so as to improve anti-static breakdown performance and increase Large cross-sectional area, the effect of increasing the carrying capacity

Pending Publication Date: 2022-05-20
GUANGZHOU FANGBANG ELECTRONICS
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  • Abstract
  • Description
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Problems solved by technology

[0004] The application of embedded resistors There are many embedded resistors integrated on the circuit board inside the terminal electronic product, and the circuit is very sensitive to high voltage static electricity. When people or objects with static electricity touch these embedded resistors, electrostatic discharge will occur , when the electrostatic high voltage impacts the circuit, it is easy to be broken down by the electrostatic high voltage, which makes the function of the embedded resistor invalid

Method used

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  • Composite metal foil and circuit board
  • Composite metal foil and circuit board
  • Composite metal foil and circuit board

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Embodiment Construction

[0053] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0054]In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct ...

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Abstract

The invention discloses a composite metal foil and a circuit board, the composite metal foil comprises a first conductive layer and a first resistive layer, the first resistive layer is formed on one side of the first conductive layer, and at least partial areas of one side, close to the first conductive layer, of the first resistive layer and one side, away from the first conductive layer, of the first resistive layer are provided with protruding structures. Due to the existence of the convex structures, the sectional area of the first resistive layer is increased, the current-carrying capacity of the first resistive layer is improved, the ESD resistance of the first resistive layer is further improved, and the electrostatic breakdown resistance of the embedded resistor is further improved.

Description

technical field [0001] The invention relates to the technical field of composite metal foil, in particular to a composite metal foil and a circuit board. Background technique [0002] With the rapid development of wireless communication and electronic equipment, electronic equipment is evolving towards precision, miniaturization and thinning. Therefore, the size of components inside electronic equipment is required to be as small and thin as possible. [0003] Resistive elements inside electronic equipment are gradually becoming lighter and thinner from the previous plug-in resistors with pins, to chip resistors, and then to embedded resistors. The preparation process of the embedded resistor is roughly as follows: the composite metal foil is attached to the circuit board, and the embedded resistor is etched by an etching process. [0004] The application of embedded resistors There are many embedded resistors integrated on the circuit board inside the terminal electronic p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/02H05K1/16
CPCH05K1/167H05K1/0259H05K1/16H05K1/02H05K3/30
Inventor 苏陟
Owner GUANGZHOU FANGBANG ELECTRONICS
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