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Electromagnetic shielding film, circuit board and electromagnetic shielding film preparation method

An electromagnetic shielding film and printed circuit board technology, applied in the electronic field, can solve the problems of high temperature explosion, high peel strength, strong piercing strength, etc., and achieve the effect of increased glue capacity and high peel strength

Active Publication Date: 2018-07-24
GUANGZHOU FANGBANG ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a preparation method of electromagnetic shielding film, circuit board and electromagnetic shielding film, which can effectively solve the phenomenon of high temperature explosion due to insufficient glue capacity in the prior art, strong piercing force and high peeling strength , to avoid the explosion phenomenon

Method used

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  • Electromagnetic shielding film, circuit board and electromagnetic shielding film preparation method
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  • Electromagnetic shielding film, circuit board and electromagnetic shielding film preparation method

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0039] see figure 1 , is a schematic structural diagram of an electromagnetic shielding film in Embodiment 1 of the present invention, as figure 1As shown, the electromagnetic shielding film includes a first shielding layer 1, a second shielding layer 2, an adhesive film layer and several convex particles; the first shielding layer 1 includes an opposite first surface 11 and a second surface, so The second surface is an uneven surface; the plurality of convex part...

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Abstract

The embodiment of the invention provides an electromagnetic shielding film, a circuit board and an electromagnetic shielding film preparation method; the electromagnetic shielding film comprises a first shield layer, a second shield layer, a glue film and a plurality of convex particles; the first shield layer comprises a first surface and a second surface arranged in opposite; the second surfaceis a fluctuating non-flat surface; the plurality of convex particles are attached to the second surface of the first shield layer; the second shield layer is configured on the second surface of the first shield layer, and covers the plurality of convex particles, thus forming convex portions, matched with the convex particles, on the outer surface of the second shield layer, and forming concave portions on other positions, wherein the fluctuation level on the outer surface of the second shield layer is greater than that of the second surface; the glue film is configured on the outer surface ofthe second shield layer.

Description

technical field [0001] The invention relates to the field of electronics, in particular to an electromagnetic shielding film, a circuit board and a preparation method of the electromagnetic shielding film. Background technique [0002] With the rapid development of the electronics industry, electronic products are further developed toward miniaturization, light weight, and high-density assembly, which greatly promotes the development of flexible circuit boards, thereby realizing the integration of component devices and wire connections. Flexible circuit boards can be widely used in industries such as mobile phones, liquid crystal displays, communications and aerospace. [0003] Driven by the international market, functional flexible circuit boards dominate the flexible circuit board market, and an important indicator for evaluating the performance of functional flexible circuit boards is electromagnetic shielding (Electromagnetic Interference Shielding, referred to as EMI Sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00B32B33/00B32B3/08
CPCB32B3/085B32B33/00B32B2307/212B32B2457/08H05K9/0088B32B3/30B32B5/18B32B5/32B32B7/06B32B7/12B32B2307/748H05K1/0218H05K9/0083H05K2201/0715
Inventor 苏陟
Owner GUANGZHOU FANGBANG ELECTRONICS
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