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Electromagnetic shielding optical window based on graphene/transparent conductive film composite structure

A transparent conductive film and electromagnetic shielding technology, which is applied in the fields of magnetic field/electric field shielding, electrical components, glass/slag layered products, etc., can solve the problems of low electromagnetic reflection, electromagnetic leakage, mutual restriction of transparency and conductive shielding ability, etc. Achieve low electromagnetic reflection electromagnetic shielding performance, strong electromagnetic shielding performance, and realize the effect of light transmission characteristics

Inactive Publication Date: 2017-02-15
HARBIN INST OF TECH
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  • Claims
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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, an electromagnetic shielding light window based on graphene / transparent conductive film composite structure has been developed to achieve the purpose of having high light transmission, low electromagnetic reflection and strong electromagnetic shielding performance at the same time

Method used

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  • Electromagnetic shielding optical window based on graphene/transparent conductive film composite structure

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Embodiment

[0035] The electromagnetic shielding light window is composed of successively overlapping and parallel arranged transparent absorbing layers 3, transparent medium 4 and transparent reflective layer 5; and a single-layer graphene film B10, and the transparent reflective layer is composed of a micro-ring metal grid 11.

[0036] The technical effects of the present invention are: when the electromagnetic shielding efficiency of the metal grid is 19.0dB, the electromagnetic shielding efficiency of the present invention is 23.2dB, and the absorption loss accounts for 58.0% of the total shielding energy, realizing the strong electromagnetic shielding mainly absorbing, And the light transmittance is 90.4%, which still has high light transmittance characteristics.

[0037] The present invention also corresponds to several other embodiments, the Figure 5 The metal grid is replaced by a transparent conductive metal compound film or nano-silver wire film, and the original arrangement o...

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Abstract

An electromagnetic shielding optical window based on a graphene / transparent conductive film composite structure belongs to the optical transparent member electromagnetic shielding technology field, and organically combines the low-reflection and partial absorption microwave characteristics of the graphene mesh films with the strong electromagnetic reflection characteristics of the high-light transmission conductive films, thereby forming a multilayer structure. The transparent conductive films are used as the transparent reflection layers, and 1-6 layers of graphene films separated by the transparent mediums are used as the transparent absorption layers. By the structure, the radio frequency radiation can penetrate the transparent absorption layers repeatedly to be absorbed strongly, so that the strong electromagnetic shielding and low electromagnetic reflection characteristics are realized, and the visible light has a high light transmission rate by transmitting the multilayer structure once. The electromagnetic shielding optical window of the present invention solves the problem that a conventional transparent electromagnetic shielding method can not consider the low-electromagnetic reflection, the strong electromagnetic shielding and the high light transmission simultaneously, and has the characteristics of high light transmission, strong electromagnetic shielding and low electromagnetic reflection.

Description

technical field [0001] The invention belongs to the field of electromagnetic shielding of optical transparent parts, in particular to an electromagnetic shielding light window based on a graphene / transparent conductive film composite structure. 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 measure to prev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00B32B9/04B32B15/04B32B15/08B32B17/06B32B3/12B32B33/00
Inventor 陆振刚马栎敏谭久彬
Owner HARBIN INST OF TECH
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