CN209731928U - A kind of flexible electromagnetic noise shielding modular structure of Folding screen - Google Patents

Abstract

The utility model discloses a kind of flexible electromagnetic noises of Folding screen to shield modular structure, and including conductive layer and set on the soft magnetism microwave absorbing coating for being coated on conductive layer upper and lower surface, the conductive layer is metallic film.The utility model combines magnetosphere on the two sides of metal layer, form double-sided magnetic layer, internal electrically conductive layer structure, the noise that soft magnetism absorbing material does not fully absorb can be by metal layer shields, it can be absorbed again by soft magnetism absorbing material by the noise of metal layer reflection simultaneously, to significantly cut down electromagnetic noise energy.

Description

A kind of flexible electromagnetic noise shielding modular structure of Folding screen

Technical field

The utility model relates to the field of auxiliary of electronic devices, are particularly directed to a kind of flexible electromagnetism of Folding screen Noise isolation modular structure.

Background technique

With the development of digital technology, electronic product volume is smaller and smaller, gradually to light, thinning and miniaturization, Component packing density is increasing, while running frequency is higher and higher, therefore under complicated electromagnetic environment, component and portion Emc issue, which seems, between part becomes more and more important.In recent years, as strong for the portable electronic devices such as smart phone The strong EMI countermeasure for requiring reply noise has following:

Method one: in order to protect built-in circuit from external noise and prevent the unnecessary of the noise generated in equipment Radiation covers noise-producing source with soft magnetism absorbing material 30, and structure is as shown in Figure 1.

Method two: can not penetrate the principle of metal using electromagnetic noise, cover noise source using shielding case 40, become most The direct method for solving electromagnetic interference.Its structure is as shown in Figure 2.

Method three: soft magnetism absorbing material is fitted in 50 inside of shielding case, wave shield effectiveness, structure such as Fig. 3 are inhaled in enhancing It is shown.

But three above method Shortcomings:

When the shortcomings that method one is that radiated noise passes through soft magnetism absorbing material, soft magnetism absorbing material can absorb noise, but not The noise that can be fully absorbed will leak into outside by soft magnetism absorbing material.

The shortcomings that method two is that all transmitting is gone back electromagnetic noise, influences the work of internal components.

The shortcomings that method three is that shielding case adds soft magnetism absorbing material simple combination, increases the thickness of mould group, is unfavorable for electricity Sub- product it is lightening, shielding case be metal plate class cannot achieve flexible foldable.

Summary of the invention

In order to solve the above technical problems, the utility model provides a kind of flexible electromagnetic noise shielding mould group of Folding screen Structure combines magnetosphere on the two sides of metal layer, forms double-sided magnetic layer, internal electrically conductive layer structure, soft magnetism absorbing material is complete The noise of hypersorption can be absorbed by soft magnetism absorbing material again by metal layer shields, while by the noise of metal layer reflection, To significantly cut down electromagnetic noise energy.

In order to achieve the above objectives, the technical solution of the utility model is as follows: a kind of flexible electromagnetic noise screen of Folding screen Modular structure is covered, including conductive layer and set on the soft magnetism microwave absorbing coating for being coated on conductive layer upper and lower surface, the conductive layer is Metallic film.

Further improve above-mentioned technical proposal, the soft magnetism microwave absorbing coating integral thickness of the conductive layer and upper and lower surface is less than 100μm。

Further, the soft magnetism microwave absorbing coating with a thickness of 30 μm.

Further, the metallic film is using copper foil, aluminium foil, flexible copper-clad plate, conductive dry goods high dielectric constant material In any material.

Through the above technical solutions, the beneficial effect of technical solutions of the utility model is: the utility model novelty proposes Magnetoelectricity (magnetosphere+conductive layer) combination film structure, in order to avoid metal layer conduction and cause short circuit risk, in metal The two sides of layer combines magnetosphere, forms double-sided magnetic layer, internal electrically conductive layer structure, the noise that soft magnetism absorbing material does not fully absorb It can be absorbed again by soft magnetism absorbing material by metal layer shields, while by the noise of metal layer reflection, to significantly cut Subtract electromagnetic noise energy.

Integrated multi-layer film structure designs for flexible foldable, has the advantage that incident noise can be in soft magnetism Absorbing material thickness direction is absorbed when round-trip, therefore the energy of noise can be greatly reduced；Due to having numerous electricity highly integrated The effect for reducing radiated noise in casing can also be played in the smart phone of subcomponent, therefore is also electronic equipment " autointoxication " The effective solution of problem；Soft magnetism absorbing material is soft magnetism coating, and integral thickness is no more than 100 μm, this membrane structure can be real The slimming and lightweight of existing electronic product are thinned to for electronic equipment thickness direction and ultimate attainment provide possibility；Two-sided soft magnetism applies The design of layer, ensure that the top and bottom overall performance of membrane structure is consistent, and directionality is not present during attachment, can arbitrarily paste It closes, improves the flexibility ratio of design of electronic products；This structure is designed as fexible film and combines the function, it can be achieved that folded bent, Diversified solution is provided for OLED Folding screen electromagnetism interference.

Detailed description of the invention

Fig. 1 is traditional soft magnetic wave material solution schematic diagram；

Fig. 2 is shielding case solution schematic diagram；

Fig. 3 is that soft magnetism absorbing material adds shield combination scheme schematic diagram；

Fig. 4 is the structural schematic diagram of the utility model.

Fig. 5 is to inhale wave, shielding and combined structure electromagnetic noise solution schematic diagram.

Fig. 6 is to inhale wave, shielding and combined structure electromagnetic noise solution Contrast on effect；

Fig. 7 is schematic diagram of application structure of the utility model in Folding screen.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.

The flexible electromagnetic noise of Folding screen according to Fig.4, shields modular structure 60, setting two layers pcb board 10 it Between, pcb board 10 is equipped with IC chip 20, and flexibility electromagnetic noise shielding 60 overall thickness of modular structure provided by the present application is less than 100 μ M, including conductive layer and set on the soft magnetism microwave absorbing coating for being coated on conductive layer upper and lower surface, conductive layer is metallic film.This gold Belong to film can be copper foil, aluminium foil, flexible copper-clad plate, can also be conductive dry goods high dielectric constant material, effect be To shielding and reflecting electromagnetic noise, by changing the transmission route of electromagnetic noise, the combination for allowing electromagnetic noise to design in the application Multiple back and forth movement in structure, auxiliary soft magnetism absorbing material, which is realized, repeatedly to be absorbed, and reaches the absorption damage that electromagnetic noise is more as far as possible Consumption, ensures the normal operation of electronic equipment.

In process of producing product, the PI copper foil by soft magnetism microwave absorbing coating double spread in polyimides material (is commonly called as scratching Property copper-clad plate FCCL) in material, close to form 60 structures through high temperature hot pressing, select 30 μm of FCCL double spread microwave absorbing coating each 30 μm, overall thickness is 90 μm, have the advantages that after hot pressing it is thin, light and flexible, also with excellent electrical property, hot property, resistance to It is hot.

The utility model absorption loss effect is shown in Fig. 6, and 70 principle of absorption of the electromagnetic noise comparison with other several schemes is shown in Fig. 5.The utility model provides diversified solution for OLED Folding screen electromagnetism interference, as shown in Figure 7.

The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The widest scope consistent with features of novelty.

Claims (4)

1. a kind of flexible electromagnetic noise of Folding screen shields modular structure, it is characterised in that: including conductive layer and be set to painting The soft magnetism microwave absorbing coating of cloth lower surface on the electrically conductive, the conductive layer are metallic film.

2. the flexible electromagnetic noise of Folding screen according to claim 1 shields modular structure, it is characterised in that: described to lead The soft magnetism microwave absorbing coating integral thickness of electric layer and upper and lower surface is less than 100 μm.

3. the flexible electromagnetic noise of Folding screen according to claim 1 shields modular structure, it is characterised in that: described soft Magnetic microwave absorbing coating with a thickness of 30 μm.

4. the flexible electromagnetic noise of Folding screen according to claim 3 shields modular structure, it is characterised in that: the gold Belong to film using any material in copper foil, aluminium foil, flexible copper-clad plate, conductive dry goods high dielectric constant material.