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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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 p
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[0054] The present invention will be described in detail below with reference to the drawings and embodiments.
[0055] Such as figure 1 As shown, the electromagnetic shielding film with high shielding performance provided by the present invention includes the following product structures: carrier film 1, grid-shaped insulating layer 2, grid-shaped metal shielding layer 3, conductive adhesive layer 4, and protective film 5.
[0056] The carrier film 1 of this embodiment is a non-silicon release film, and the film material can be one of polyester film and polyimide film. The main function of the non-silicon release film of polyester film and polyimide film as the carrier film is to facilitate the formation of the insulating layer 2. The insulating layer in this embodiment is made of resin, and the insulating layer made of resin can better Connect to the surface of polyester film and polyimide film. In addition, the carrier film can also play a supporting role and provide protectio...
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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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Login to view more IPC IPC(8): H05K9/00H05K1/02
CPCH05K1/0216H05K9/0086
Inventor 谭铭
Owner 广东桑泰科技有限公司
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