Combined FCCL material having electromagnetic shielding function and manufacturing method therefor

Abstract

The invention provides a combined FCCL (flexible copper clad laminate) material having an electromagnetic shielding function and a manufacturing method therefor. The combined FCCL material has a layered structure and comprises at least one electric conduction layer and at least one insulation layer, wherein the electric conduction layer and the insulation layer alternate with each other, and adhesives are used between layers for fulfilling a bonding function; at least one basic layered structure is included and comprises magnetic rubber substrate insulating layer, an adhesive middle layer and a metal electric conduction foil layer. The combined FCCL material can be used for manufacturing an FPC circuit board and specifically a circuit board with electromagnetic shielding requirements. The combined FCCL material disclosed in the invention can be used as an FCCL base material in the FPC industry and can be used for absorbing and shielding electromagnetic waves in a wide frequency scope; compared with a conventional FPC and subsequent shielding module group combination, the combined FCCL material is advantaged by high production efficiency, small thickness, low cost and the like in terms of manufacture of the circuit board with the electromagnetic shielding requirements.

Description

technical field [0001] The invention relates to the fields of FCCL (flexible copper clad laminate) and magnetic materials, in particular to a composite FCCL material with electromagnetic shielding function and a manufacturing method thereof. Background technique [0002] With the development of economy and society, more and more electronic products appear in our daily life, bringing infinite convenience and fun to our life. However, while we enjoy these high-tech products, we also need to Bearing the troubles brought by electronic equipment, electromagnetic waves of various frequency bands and intensities have brought a great negative impact on electronic products and our lives: not only electronic equipment will affect each other, but also affect our health. In view of this, strict electromagnetic compatibility control requirements have been imposed on the delivery of electronic equipment in the world, which makes the use of electromagnetic shielding materials for electroma...

AI Technical Summary

Problems solved by technology

[0004] With the development of consumer electronics, FCCL materials, which are important substrates for FPC, have also developed unprecedentedly. In traditional FCCL manufacturing, polyester (PET) films, polyimide (PI) films, polyesterimide films, fluorine Carbon ethylene film, imide fiber paper, polybutylene terephthalate film, etc. are used as substrates; traditional FPC circuit boards have unparalleled electrical performance, but as the requirements for electromagnetic shielding performance become higher and higher, their performance in electromagnetic The shortcomings of shielding are exposed. In order to solve this problem, an electromagnetic shielding material is usually added on the FPC circuit board to meet the EMC requirements of the whole machine, which undoubtedly increases the manufacturing process and greatly increases the product quality. The overall thickness of the module is not conducive to the thinning and thinning of electronic products, and at the same time increases the cost

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