Bidirectional wave absorption transparent electromagnetic shielding device based on graphene/transparent conductive films

Abstract

A bidirectional wave absorption transparent electromagnetic shielding device based on graphene / transparent conductive films belongs to the optical transparent member electromagnetic shielding technology field, and is formed by assembling a transparent absorption layer A, a transparent medium A, a transparent reflection layer, a transparent medium B and a transparent absorption layer B which are orderly laminated and parallelly configured. The transparent absorption layers A and B are both formed by 1-6 layers of graphene films separated by transparent mediums, and the transparent reflection layer is composed of transparent conductive films comprising transparent metal compound films, silver nanowire films or metal meshes. The electromagnetic shielding device can absorb the radio frequency radiation at the two sides of the devices simultaneously, repeatedly and strongly, thereby realizing the bidirectional strong shielding and low reflection characteristics. The electromagnetic shielding device of the present invention solves the problem that a conventional transparent electromagnetic shielding method can not consider the bidirectional low-electromagnetic reflection, the strong electromagnetic shielding and the high light transmission simultaneously, and has the characteristics of high light transmission performance, strong electromagnetic shielding and bidirectional low electromagnetic reflection.

Description

technical field [0001] The invention belongs to the field of electromagnetic shielding of optical transparent parts, in particular to a bidirectional wave-absorbing transparent electromagnetic shielding device based on graphene / transparent conductive film. Background technique [0002] With the development of radio, television, wireless communication technology and microwave technology, a large number of radio frequency devices are equipped in various places of human activities, and the spectrum range continues to widen, and the intensity doubles, which not only interferes with electronic equipment, but also affects human health. threaten. This invisible and intangible "electromagnetic pollution" directly acts on machines or human bodies, and is a serious "invisible killer". It has become the fifth largest pollution after air pollution, water pollution, solid waste pollution and noise pollution. Electromagnetic shielding (including absorption and reflection) is the main mea...

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Problems solved by technology

[0013] The purpose of the present invention is to overcome the deficiencies of the above-mentioned existing transparent electromagnetic shielding technology, especially for the mutual restriction of transparency and conductive shielding ability in the existing reflective transparent shielding technology, it is difficult to take into account high light transmittance and strong microwave shielding efficiency, and reflective electromagnetic shielding technology In order to solve the problem of electromagnetic leakage and secondary pollution caused by signals, a two-way absorbing transparent electromagnetic shielding device based on graphene / transparent conductive film is developed to achieve the purpose of having two-way low electromagnetic reflection, strong electromagnetic shielding and high light transmission performance at the same time

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