CN204948618U - electromagnetic shielding film - Google Patents
electromagnetic shielding film Download PDFInfo
- Publication number
- CN204948618U CN204948618U CN201520307160.0U CN201520307160U CN204948618U CN 204948618 U CN204948618 U CN 204948618U CN 201520307160 U CN201520307160 U CN 201520307160U CN 204948618 U CN204948618 U CN 204948618U
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- Prior art keywords
- electromagnetic shielding
- adhesive layer
- conductive
- shielding film
- conductive adhesive
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Abstract
The utility model discloses a kind of electromagnetic shielding film, it comprises the carrier layer, insulating barrier, conductive fabric, conductive adhesive layer and the protective layer that set gradually, and described conductive adhesive layer protrudes out in the hole of described conductive fabric towards the side of described conductive fabric.The electromagnetic shielding film that the utility model provides, the shield effectiveness of electromagnetic shielding film is realized on the one hand by the conductive fabric and conductive adhesive layer utilizing existing pore structure, reduce costs, conductive adhesive layer and conductive fabric form horizontal conductive structure respectively on the other hand, the part that conductive adhesive layer protrudes out in the hole of a lateral conductive cloth of conductive fabric makes conductive adhesive layer and conductive fabric conduct and is formed continuously, three-dimensional mesh type electromagnetic screen, realize vertical conduction, and effectively connect material to be bonded, become electromagnetic shielding entirety, to improve the shield effectiveness of the utility model electromagnetic shielding film.
Description
Technical field
The utility model relates to a kind of screened film technology for wiring board, particularly relates to a kind of electromagnetic shielding film.
Background technology
Existing electromagnetic shielding film only has independent conductive adhesive layer usually.In use, conductive adhesive layer is filled between metallic conductor, realizes conducting between metallic conductor by conducting resinl.Existing electromagnetic shielding film, only rely on conductive adhesive layer to realize conducting between metallic conductor on the one hand, during for shielding, its shielding properties is poor, and shield effectiveness is unsatisfactory, in the process of on the other hand shaped conductive glue-line, compare to take time and effort and cause production cost higher.
Based on this present situation, need that a kind of structure is simple, the reasonable electromagnetic shielding film of capability of electromagnetic shielding badly, lower production cost to simplify production technology.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, the reasonable electromagnetic shielding film of capability of electromagnetic shielding, lowers production cost to simplify production technology.
To achieve these goals; the utility model discloses a kind of electromagnetic shielding film; it comprises the carrier layer, insulating barrier, conductive fabric, conductive adhesive layer and the protective layer that set gradually, and described conductive adhesive layer protrudes out in the hole of described conductive fabric towards the side of described conductive fabric.
Compared with prior art, the electromagnetic shielding film that the utility model provides, the shield effectiveness of electromagnetic shielding film is realized on the one hand by the conductive fabric and conductive adhesive layer utilizing existing pore structure, reduce costs, conductive adhesive layer and conductive fabric form horizontal conductive structure respectively on the other hand, the part that conductive adhesive layer protrudes out in the hole of a lateral conductive cloth of conductive fabric makes conductive adhesive layer and conductive fabric conduct and is formed continuously, three-dimensional mesh type electromagnetic screen, realize vertical conduction, and effectively connect material to be bonded, become electromagnetic shielding entirety, to improve the shield effectiveness of the utility model electromagnetic shielding film.
Preferably, described conductive fabric can be substituted by conduction grenadine or conductive non-woven fabrics; Conduction grenadine is the same with conductive fabric with conductive non-woven fabrics, for plating or coated with conductive material are on grenadine or nonwoven fabrics, it is made to have good conductivity, self structure based on conduction grenadine and conductive non-woven fabrics makes its surface have hole, when coated with conductive glue, coating conducting resinl that is liquid or colloidal enters in hole voluntarily, make conduction grenadine or conductive non-woven fabrics and conductive adhesive layer form fine and close electro-magnetic screen layer, improve the effectiveness of the electromagnetic shielding film that the utility model provides.
Preferably, the material of described protective layer is release film or diaphragm; When the electromagnetic shielding film that the utility model provides comes into operation, protective layer can be torn off on electromagnetic shielding film, conductive adhesive layer directly be pasted the position needing electromagnetic shielding.
Preferably, the material of described protective layer is release film, and the material of described conductive adhesive layer is pressure sensitive adhesive; The viscosity of release film is poor, by when good for release film self-adhesive conducting resinl removes, can not damage the structure of electromagnetic shielding film.
Particularly, the material of described conductive adhesive layer is acrylic pressure-sensitive adhesivee, silicone based pressure sensitive adhesive, rubber-like pressure sensitive adhesive or thermotropic pressure sensitive glue.
Preferably, the material of described protective layer is diaphragm, and the material of described conductive adhesive layer is heat curing-type.The viscosity of diaphragm is better, effectively can reduce sag of protecting coating before coming into operation, expose conductive adhesive layer.
Preferably, the material of described conductive adhesive layer is heat curing-type; The conductive glue of aqueous or colloidal, to a rear flank of conductive fabric, gets final product rapid curing to its heating, to enter next production stage, thus effectively can shorten the activity duration.
Preferably, the material of described conductive adhesive layer is modified epoxy glue or modified polyurethane glue.
Preferably, in described conductive adhesive layer, include Ni powder, Co powder, the Fe powder through magnetic force orientation, or through the conductive metal powder coated by Ni, Co or Fe of magnetic force orientation; Ni, Co, Fe are magnetic material, via Ni powder, Co powder, the Fe powder of magnetic force orientation, or through the conductive metal powder coated by Ni, Co or Fe of magnetic force orientation, there is unified magnetic force direction, thus increase its conductive capability, realize the object of the effectiveness improving the utility model electromagnetic shielding film.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the utility model electromagnetic shielding film.
Fig. 2 is the decomposition chart of the utility model electromagnetic shielding film.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with execution mode.
As shown in Figure 1, electromagnetic shielding film of the present utility model, comprises the carrier layer 10, insulating barrier 20, conductive fabric 30, conductive adhesive layer 40 and the protective layer 50 that set gradually, and conductive adhesive layer 40 protrudes out in the hole of a lateral conductive cloth 30 of conductive fabric 30.Shown in composition graphs 2, more specifically:
Carrier layer 10 is in planar structure.Carrier layer 10, as the base layer of shaping the utility model electromagnetic shielding film, can protect the surface of the utility model electromagnetic shielding film on the whole.It can be polyester film, polyester release film or silica gel protected film etc., as long as can realize the protective effect of the electromagnetic shielding film to superhigh shielded performance, its thickness can between 10 μm-30 μm.
The side of carrier layer 10 is provided with insulating barrier 20.Particularly, insulating barrier 20 can be formed for the side of coating insulating material to carrier layer 10, the insulating barrier 20 made in advance can also be bonded to the side of carrier layer 10.Arranging of insulating barrier 20 can prevent electric charge from overflowing, thus the situations such as electric leakage, electric shock or short circuit that effectively reduce occur.
Conductive fabric 30 is arranged at the side that insulating barrier 20 deviates from carrier layer 10.Conductive fabric 30 is base material with fiber cloth, imposes plated metal coating and make it have metallic character and become conductive fibre fabric after pre-process.The base material of conductive fabric 30 can for using polyester fiber cloth, and conductive fabric 30 can be nickel conductive fabric, gold-plated conductive fabric, plating charcoal conductive fabric or aluminium foil fiber composite cloth etc.Conductive fabric 30 is in plane, and conductive fabric 30 can plastic deformation arbitrarily in flexibility.The character of conductive fabric 30 determines that it has certain gap, thus conducting resinl can be protruded out in the hole of conductive fabric 30.Further, conductive fabric 30 can be had the material substitution of hole by conduction grenadine or conductive non-woven fabrics etc.
Conductive adhesive layer 40 is arranged at the side that conductive fabric 30 deviates from insulating barrier 20, and conductive adhesive layer 40 protrudes out in the hole of a lateral conductive cloth 30 of conductive fabric 30.Particularly, the material of conductive adhesive layer 40 is the heat curing-type such as modified epoxy glue or modified polyurethane glue, it can also be acrylic pressure-sensitive adhesivee, silicone based pressure sensitive adhesive, rubber-like pressure sensitive adhesive, or the pressure sensitive adhesive such as thermotropic pressure sensitive glue, by the conductive glue of aqueous or colloidal to conductive fabric 30 1 rear flank, before not yet solidifying to form conductive adhesive layer 30, conducting resinl that is aqueous or colloidal can penetrate in the gap of conductive fabric 30, after the conducting resinl applied being heating and curing and forming conductive adhesive layer 40, namely the structure that side that conductive adhesive layer 40 is positioned at conductive fabric 30 protrudes out respectively to the hole of conductive fabric 30 is formed, thus the electromagnetic shielding membrane structure making the utility model provide is tightr, effectiveness is more stable.
Further, conductive adhesive layer 40 comprises the conducting resinl penetrated in conductive fabric 30 and solidify to form separately some and conducting resinl projection 41 closely of arranging, and does not penetrate into conductive fabric 30, is positioned at the partially conductive adhesive curing of conductive fabric 30 both sides and forms conducting resinl flat board 42.Wherein, conducting resinl dull and stereotyped 42 forms horizontal conductive structure, conducting resinl projection 41 forms vertical conductive structure, conducting resinl projection 41, conducting resinl dull and stereotyped 42 and conductive fabric 30 conduct and form continuous, three-dimensional mesh type electromagnetic screen, realize vertical conduction, and effectively connect material to be bonded, become electromagnetic shielding entirety, to improve the shield effectiveness of the utility model electromagnetic shielding film.
Protective layer 50 is arranged at the side that conductive adhesive layer 40 deviates from conductive fabric 30.When the electromagnetic shielding film that the utility model provides comes into operation, protective layer 50 can be torn off on electromagnetic shielding film, conductive adhesive layer 40 directly be pasted the position needing electromagnetic shielding.Further, after tearing off protective layer 50, the conductive adhesive layer 40 exposed has certain viscosity, by conductive adhesive layer 40 docile on two different wiring boards, can realize conducting of two wiring boards easily; Insulating barrier 20 and carrier layer 10 can realize good insulation effect.
For making, between protective layer 50 and conductive adhesive layer 40, there is gratifying cohesive force; both protective layer 50 will be caused easily to come off because cohesive force between protective layer 50 and conductive adhesive layer 40 is too small; when also can not cause removing protective layer 50 because cohesive force between protective layer 50 and conductive adhesive layer 40 is excessive, conductive adhesive layer 40 is impaired, should be suitable when usually selecting both materials.As; when the material of protective layer 50 is chosen as the poor release film of viscosity; the material of conductive adhesive layer 40 preferably selects the good pressure sensitive adhesive that bonds, and when the material of protective layer 50 is chosen as the good diaphragm of viscosity, the material of conductive adhesive layer 40 preferably selects the poor heat curing-type that bonds.
Further, in conductive adhesive layer 40, include Ni powder, Co powder, the Fe powder through magnetic force orientation, or through the conductive metal powder coated by Ni, Co or Fe of magnetic force orientation; Ni, Co, Fe are magnetic material, via Ni powder, Co powder, the Fe powder of magnetic force orientation, or through the conductive metal powder coated by Ni, Co or Fe of magnetic force orientation, there is unified magnetic force direction, thus increase its conductive capability, realize the object of the effectiveness improving the utility model electromagnetic shielding film.
Compared with prior art, the electromagnetic shielding film that the utility model provides, shield effectiveness on the one hand by utilizing the conductive fabric 30 of existing pore structure and conductive adhesive layer 40 to realize electromagnetic shielding film, reduce costs, conductive adhesive layer 40 and conductive fabric 30 form horizontal conductive structure respectively on the other hand, the part that conductive adhesive layer 40 protrudes out in the hole of a lateral conductive cloth 30 of conductive fabric 30 makes conductive adhesive layer 40 and conductive fabric 30 conduct and is formed continuously, three-dimensional mesh type electromagnetic screen, realize vertical conduction, and effectively connect material to be bonded, become electromagnetic shielding entirety, to improve the shield effectiveness of the utility model electromagnetic shielding film.Above disclosedly be only preferred embodiment of the present utility model, certainly can not limit the interest field of the utility model with this, therefore according to the equivalent variations that the utility model claim is done, still belong to the scope that the utility model is contained.
Claims (8)
1. an electromagnetic shielding film, is characterized in that: comprise the carrier layer, insulating barrier, conductive fabric, conductive adhesive layer and the protective layer that set gradually, and described conductive adhesive layer protrudes out in the hole of described conductive fabric towards the side of described conductive fabric.
2. electromagnetic shielding film as claimed in claim 1, is characterized in that: described conductive fabric can be substituted by conduction grenadine or conductive non-woven fabrics.
3. electromagnetic shielding film as claimed in claim 1, is characterized in that: the material of described protective layer is release film or diaphragm.
4. electromagnetic shielding film as claimed in claim 1, it is characterized in that: the material of described protective layer is release film, the material of described conductive adhesive layer is pressure sensitive adhesive.
5. electromagnetic shielding film as claimed in claim 4, is characterized in that: the material of described conductive adhesive layer is acrylic pressure-sensitive adhesivee, silicone based pressure sensitive adhesive, rubber-like pressure sensitive adhesive or thermotropic pressure sensitive glue.
6. electromagnetic shielding film as claimed in claim 1, it is characterized in that: the material of described protective layer is diaphragm, the material of described conductive adhesive layer is heat curing-type.
7. electromagnetic shielding film as claimed in claim 6, is characterized in that: the material of described conductive adhesive layer is modified epoxy glue or modified polyurethane glue.
8. electromagnetic shielding film as claimed in claim 1, is characterized in that: include Ni powder, Co powder, the Fe powder through magnetic force orientation in described conductive adhesive layer, or through the conductive metal powder coated by Ni, Co or Fe of magnetic force orientation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520307160.0U CN204948618U (en) | 2015-05-13 | 2015-05-13 | electromagnetic shielding film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520307160.0U CN204948618U (en) | 2015-05-13 | 2015-05-13 | electromagnetic shielding film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204948618U true CN204948618U (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520307160.0U Expired - Fee Related CN204948618U (en) | 2015-05-13 | 2015-05-13 | electromagnetic shielding film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204948618U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106535602A (en) * | 2016-11-23 | 2017-03-22 | 京东方科技集团股份有限公司 | Electromagnetic interference shielding film and display device |
| CN108513527A (en) * | 2018-05-02 | 2018-09-07 | 沪如科技南京有限公司 | A kind of electromagnetic shielding film |
| CN108756053A (en) * | 2018-06-22 | 2018-11-06 | 无锡环中科技服务有限公司 | A kind of prefabricated board and preparation method thereof with electro-magnetic screen layer |
| CN108990403A (en) * | 2018-08-13 | 2018-12-11 | 北京梦之墨科技有限公司 | A kind of electromagnetic armouring structure |
| CN109068556A (en) * | 2018-09-18 | 2018-12-21 | 北京梦之墨科技有限公司 | A kind of electromagnetic shielding bag |
| CN109068555A (en) * | 2018-09-18 | 2018-12-21 | 北京梦之墨科技有限公司 | A kind of electromagnetic shielding box |
| CN109496063A (en) * | 2018-12-27 | 2019-03-19 | 武汉天马微电子有限公司 | Electromagnetic shielding film and its manufacturing method, flexible circuit board and its manufacturing method |
| CN110769669A (en) * | 2018-07-27 | 2020-02-07 | 广州方邦电子股份有限公司 | Electromagnetic shielding film, circuit board and preparation method of electromagnetic shielding film |
| CN112867378A (en) * | 2021-01-08 | 2021-05-28 | 武汉华星光电半导体显示技术有限公司 | Electromagnetic shielding film, display panel and display device |
| CN114678160A (en) * | 2022-03-04 | 2022-06-28 | 未来穿戴健康科技股份有限公司 | Flexible electrode, preparation method thereof and massage instrument |
-
2015
- 2015-05-13 CN CN201520307160.0U patent/CN204948618U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106535602A (en) * | 2016-11-23 | 2017-03-22 | 京东方科技集团股份有限公司 | Electromagnetic interference shielding film and display device |
| CN108513527A (en) * | 2018-05-02 | 2018-09-07 | 沪如科技南京有限公司 | A kind of electromagnetic shielding film |
| CN108756053A (en) * | 2018-06-22 | 2018-11-06 | 无锡环中科技服务有限公司 | A kind of prefabricated board and preparation method thereof with electro-magnetic screen layer |
| CN110769669A (en) * | 2018-07-27 | 2020-02-07 | 广州方邦电子股份有限公司 | Electromagnetic shielding film, circuit board and preparation method of electromagnetic shielding film |
| CN110769669B (en) * | 2018-07-27 | 2024-02-06 | 广州方邦电子股份有限公司 | Electromagnetic shielding film, circuit board and preparation method of electromagnetic shielding film |
| CN108990403A (en) * | 2018-08-13 | 2018-12-11 | 北京梦之墨科技有限公司 | A kind of electromagnetic armouring structure |
| CN108990403B (en) * | 2018-08-13 | 2024-02-23 | 北京梦之墨科技有限公司 | Electromagnetic shielding structure |
| CN109068556A (en) * | 2018-09-18 | 2018-12-21 | 北京梦之墨科技有限公司 | A kind of electromagnetic shielding bag |
| CN109068555A (en) * | 2018-09-18 | 2018-12-21 | 北京梦之墨科技有限公司 | A kind of electromagnetic shielding box |
| CN109496063A (en) * | 2018-12-27 | 2019-03-19 | 武汉天马微电子有限公司 | Electromagnetic shielding film and its manufacturing method, flexible circuit board and its manufacturing method |
| CN112867378A (en) * | 2021-01-08 | 2021-05-28 | 武汉华星光电半导体显示技术有限公司 | Electromagnetic shielding film, display panel and display device |
| CN114678160A (en) * | 2022-03-04 | 2022-06-28 | 未来穿戴健康科技股份有限公司 | Flexible electrode, preparation method thereof and massage instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160206 Address after: 523000 Guangdong Province, Dongguan City Dalingshan Town Lang Village Stone Road third industrial water Patentee after: Li Jinming Address before: 523000 Guangdong Province, Dongguan City Dalingshan Town Water Lang Village Stone Road third Industrial Zone No. three Patentee before: Dongguan Wanfeng Nano Material Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20160513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |