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Electromagnetic shielding film with high shielding performance and production process thereof

A technology of electromagnetic shielding film and shielding performance, which is applied in the fields of magnetic/electric field shielding, crosstalk/noise/electromagnetic interference reduction (, circuit devices, etc.), and can solve the problem of brittle fracture of the metal layer of the electromagnetic shielding film, increased material and production costs, and grounding Increased resistance and other issues, to achieve outstanding bending resistance, good electromagnetic shielding effectiveness, and prevent charge overflow

Pending Publication Date: 2020-05-12
广东桑泰科技有限公司
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  • Application Information

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Problems solved by technology

However, in this way, on the one hand, it leads to the complexity of the process, and at the same time, it also greatly increases the cost of materials and production.
On the other hand, the thicker metal layer, due to its enhanced rigidity, is prone to the problem of brittle fracture of the metal layer of the electromagnetic shielding film after the flexible circuit board is bent many times, resulting in a decrease in shielding effectiveness and an increase in grounding resistance. Big

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  • Electromagnetic shielding film with high shielding performance and production process thereof
  • Electromagnetic shielding film with high shielding performance and production process thereof
  • Electromagnetic shielding film with high shielding performance and production process thereof

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Embodiment Construction

[0054] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0055] Such as figure 1 As shown, the electromagnetic shielding film with high shielding performance provided by the present invention has a product structure as follows: a carrier film 1, a grid-like insulating layer 2, a grid-like metal shielding layer 3, a conductive adhesive layer 4, and a protective film 5.

[0056] The carrier film 1 of this embodiment is a non-silicon release film, and its film material can be one of polyester film, polyimide film and the like. Carrier film selects the non-silicon release film main effect of polyester film, polyimide film to be convenient to form insulating layer 2, and the insulating layer in the present embodiment is to be made by resin, and the insulating layer that resin is made can better Attached to the surface of polyester film and polyimide film. In addition, the carrier film can also play a supporti...

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Abstract

The invention relates to the technical field of electromagnetic shielding films for flexible circuit boards, in particular to an electromagnetic shielding film with high shielding performance and a production process thereof. According to the invention, the main points of the technical scheme are that the electromagnetic shielding film comprises an insulating layer, a metal shielding layer and a conductive adhesive layer which are arranged in sequence; one side of the insulating layer is in a network shape, and the side, connected with the insulating layer, of the metal shielding layer is in anetwork shape matched with the insulating layer. According to the electromagnetic shielding film with high shielding performance and the production process of the electromagnetic shielding film, theshielding effectiveness of the electromagnetic shielding film reaches up to 75db due to the unique shielding body structure. Meanwhile, the metal shielding layer filled on one side of the grid-shapedinsulating layer has special grid-shaped process characteristics which are different from the structural characteristics of the conventional rigid flat metal shielding layer, so the bending resistanceof the metal shielding layer is more outstanding, and the metal shielding layer has excellent flexibility. In addition, compared with similar products, the method is simple in process, easy to implement, lower in cost and higher in mass production.

Description

technical field [0001] The invention relates to the technical field of electromagnetic shielding films for flexible circuit boards, in particular to an electromagnetic shielding film with high shielding performance and a production process thereof. Background technique [0002] With the rapid development of modern electronic industrialization, a large number of electronic and electrical equipment are widely used in industrial production and people's daily life, thus greatly promoting the development of industrial technology and improving people's quality of life. However, electronic and electrical equipment will radiate a large amount of electromagnetic waves during use, which has caused non-negligible harm to the normal operation of electronic equipment and the living environment of human beings. Therefore, preventing the pollution of electromagnetic waves has become one of the hot spots of current scientific research. The harm of electromagnetic radiation to electronic eq...

Claims

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Application Information

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IPC IPC(8): H05K9/00H05K1/02
CPCH05K9/0086H05K1/0216
Inventor 谭铭
Owner 广东桑泰科技有限公司
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