CN215835784U - Electromagnetic shielding film for mobile phone - Google Patents
Electromagnetic shielding film for mobile phone Download PDFInfo
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- CN215835784U CN215835784U CN202122222819.0U CN202122222819U CN215835784U CN 215835784 U CN215835784 U CN 215835784U CN 202122222819 U CN202122222819 U CN 202122222819U CN 215835784 U CN215835784 U CN 215835784U
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- copper foil
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- conductive copper
- electromagnetic shielding
- shielding film
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Abstract
The utility model discloses an electromagnetic shielding film for a mobile phone, which comprises release paper and an electromagnetic shielding film arranged on the release paper, wherein the electromagnetic shielding film comprises a first conductive copper foil, a first conductive adhesive, a second conductive copper foil, a second conductive adhesive and a first graphite radiating fin, the first conductive adhesive, the second conductive copper foil, the second conductive adhesive and the first graphite radiating fin are arranged at the bottom of the first conductive copper foil and connected with the release paper, the first graphite radiating fin is arranged in the middle of the first conductive copper foil in a square shape, the second conductive adhesive is arranged at the periphery of the first graphite radiating fin, the second conductive copper foil is arranged at the periphery of the second conductive adhesive, the first conductive adhesive is arranged at the periphery of the second conductive copper foil, and a layer of the second graphite radiating fin is arranged at the top of the first conductive copper foil. The heat dissipation device is simple in structure and convenient to use, and heat emitted by the electronic component can be effectively conducted to the copper foil by adhering the heat dissipation device to the electronic component, and then conducted to the graphite heat dissipation sheet by the copper foil, so that the purpose of rapid heat dissipation is achieved.
Description
Technical Field
The utility model relates to the field of shielding films, in particular to an electromagnetic shielding film for a mobile phone.
Background
The conductive copper foil is a metal adhesive tape and is mainly applied to electromagnetic shielding, electric signal shielding and magnetic signal shielding, the electric signal shielding mainly depends on the excellent conductivity of copper, and the magnetic shielding needs a glue surface conductive substance 'nickel' of the conductive copper foil to achieve the effect of magnetic shielding, so that the conductive copper foil is widely applied to mobile phones, notebook computers and other digital products.
At present, partial products in the market conduct heat conduction and heat dissipation through metal materials, particularly copper and aluminum, although the heat conductivity coefficient of copper is 398W/mK, the application of the copper is limited due to the fact that the copper is heavy and easy to oxidize, and the like, and the heat conductivity coefficient of aluminum is 237W/mK, and the requirements of the existing products on heat conduction and heat dissipation are difficult to meet. The heat dissipation film made of natural graphite materials and artificially synthesized graphite materials used at present improves the heat dissipation of electronic products to a certain extent, but the graphite heat dissipation film is mainly made by a method of directly rolling treated graphite and methods of macromolecular carbonization, graphitization and the like, and the heat dissipation material with the surface made of graphite has low tensile strength, is fragile, has more particles and dust and is inconvenient to install and use.
In summary, with the rapid development of smart phones, the screen is made larger, so that the heat dissipation and electromagnetic shielding of the smart phones are more and more emphasized by mobile phone manufacturers, especially high-end smart phones, and in order to increase the experience of users on the operation of the mobile phone screen, a plurality of manufacturers add copper foils for heat conduction, heat dissipation and electromagnetic shielding in the screen assembly. The existing copper foil is generally and simply used, and is only adhered to a shielding cover or an electronic component which needs heat conduction and heat dissipation and electromagnetic shielding, the heat conduction and heat dissipation performance of the copper foil is general, and aiming at the problem, a heat dissipation electromagnetic shielding film used for the electronic component of the mobile phone assembly is designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problems in the prior art and provides an electromagnetic shielding film for a mobile phone, which is simple in structure and convenient to use, and the heat conduction and radiation performance of the conductive copper foil can be effectively and rapidly improved by adding the graphite radiating fin on the conductive copper foil.
In order to achieve the technical purpose and achieve the technical effect, the utility model is realized by the following technical scheme:
an electromagnetic shielding film for a mobile phone comprises release paper and an electromagnetic shielding film arranged on the release paper, the electromagnetic shielding film comprises a first conductive copper foil, a first conductive adhesive, a second conductive copper foil, a second conductive adhesive and a first graphite radiating fin, wherein the first conductive adhesive, the second conductive copper foil, the second conductive adhesive and the first graphite radiating fin are arranged at the bottom of the first conductive copper foil and are connected with release paper, the first graphite radiating fins are arranged in the middle of the first conductive copper foil in a square shape, the second conductive adhesive is positioned at the periphery of the first graphite radiating fins, the second conductive copper foil is positioned at the periphery of the second conductive adhesive, the first conductive adhesive is positioned at the periphery of the second conductive copper foil, a second graphite heat sink is arranged on the top of the first conductive copper foil and separates the first conductive copper foil into an upper conductive area and a lower conductive area, and protective films connected with the second graphite radiating fin are arranged on the upper conductive area and the lower conductive area.
According to the technical scheme, the first conductive adhesive, the second conductive copper foil, the second conductive adhesive and the first graphite radiating fin at the bottom of the first conductive copper foil can increase the heat conduction, heat dissipation and electromagnetic shielding performances of the electromagnetic shielding film, and can increase the toughness and strength of the electromagnetic shielding film, so that the electromagnetic shielding film is not easy to wrinkle, deform or crack and the like when being pasted. The conductive copper foil can be used for electromagnetic shielding on one hand and conductive heat conduction on the other hand, the conductive adhesive is used for heat conduction and electric conduction on the same hand, in addition, the heat dissipation performance of the electromagnetic shielding film is better due to the addition of the graphite heat radiating fins, and the upper conductive area and the lower conductive area are beneficial to heat and static electricity guiding of electronic components.
As a preferable aspect of the present application, the first conductive copper foil is arranged in a rectangular shape.
The technical scheme is realized so as to be convenient for use in a mobile phone circuit board.
As a preferred aspect of the present application, two sides of the protective film are provided with extending portions from which the first conductive copper foil extends, and the extending portions are provided with positioning holes.
The technical scheme is realized so as to facilitate the pasting and positioning of the electromagnetic shielding film.
As a preferred scheme of the application, one side of the release paper is provided with a process hole, and the process hole is positioned on one side of one positioning hole.
The technical scheme is realized, and the stacking management of the electromagnetic shielding films is facilitated.
As a preferable scheme of the application, the thickness of the second graphite radiating fin is set to be 0.01-0.015mm, the thickness of the first graphite radiating fin is consistent with that of the second conductive copper foil, the thickness of the second conductive copper foil is set to be 2/3 of that of the first conductive copper foil, and the thickness of the first conductive copper foil is set to be 0.15-0.3 mm.
According to the technical scheme, on one hand, the toughness, the strength, the bearing capacity and the heat conduction and radiation performance of the electromagnetic shielding film are improved, on the other hand, the electromagnetic shielding film is light and thin in design, and heat transfer is facilitated.
As a preferred scheme of the application, a vertical cutting line is arranged on the release paper, the cutting line is used for dividing the release paper into two parts, and the cutting line is positioned in the middle of the first conductive copper foil; the thickness of the release paper and the protective film is set to be 0.1-0.15 mm.
By the technical scheme, the release paper can be conveniently peeled off and the electromagnetic shielding film can be conveniently mounted and adhered.
The utility model has the beneficial effects that: the electromagnetic shielding film is mainly used for conducting heat dissipation and electromagnetic shielding of electronic components of the mobile phone; and the cutting line arranged on the release paper can help the release paper to be peeled off and the electromagnetic shielding film to be pasted.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:
FIG. 1 is a schematic view relating to the present invention;
FIG. 2 is a schematic diagram of the structure of the present invention.
The reference numbers in the figures illustrate: the structure comprises release paper 1, a first conductive copper foil 2, a first conductive adhesive 3, a second conductive copper foil 4, a second conductive adhesive 5, a first graphite radiating fin 6, a second graphite radiating fin 7, an upper conductive area 8, a lower conductive area 9, a protective film 10, an extension portion 11, a positioning hole 12, a fabrication hole 13 and a cutting line 14.
Detailed Description
The utility model is further described with reference to the accompanying drawings in which:
example (b):
an electromagnetic shielding film for a mobile phone, referring to fig. 1 and 2, comprises a release paper 1 and an electromagnetic shielding film arranged on the release paper 1, the electromagnetic shielding film comprises a first conductive copper foil 2 and a first conductive adhesive 3 arranged at the bottom of the first conductive copper foil 2 and connected with the release paper 1, second conductive copper foil 4, second conducting resin 5 and first graphite fin 6, first graphite fin 6 is the middle of square locating first conductive copper foil 2, second conductive resin 5 is located around first graphite fin 6, second conductive copper foil 4 is located around second conductive resin 5, first conductive resin 3 is located around second conductive copper foil 4, the top of first conductive copper foil 2 is equipped with one deck second graphite fin 7, second graphite fin 7 keeps apart first conductive copper foil 2 into upper portion conduction region 8 and lower part conduction region 9, be provided with the protection film 10 of being connected with second graphite fin 7 on upper portion conduction region 8 and the lower part conduction region 9. In this embodiment, the first conductive adhesive 3, the second conductive copper foil 4, the second conductive adhesive 5 and the first graphite heat sink 6 at the bottom of the first conductive copper foil 2 can not only increase the heat conduction, heat dissipation and electromagnetic shielding performance of the electromagnetic shielding film, but also increase the toughness and strength of the electromagnetic shielding film, so that the electromagnetic shielding film is not easy to wrinkle, deform or crack when being adhered. The conductive copper foil is arranged for electromagnetic shielding on one hand and conductive heat conduction on the other hand, the conductive adhesive is also used for heat conduction and electric conduction, in addition, the heat dissipation performance of the electromagnetic shielding film is better due to the addition of the graphite heat dissipation fins, and the upper conductive area 8 and the lower conductive area 9 are beneficial to heat and static electricity conduction of electronic components.
In the embodiment, the first conductive copper foil 2 is rectangular, so as to be used in a mobile phone circuit board.
In the embodiment, the protection film 10 is provided with extension portions 11 extending out of the first conductive copper foil 2 on two sides, and the extension portions 11 are provided with positioning holes 12 to assist the pasting and positioning of the electromagnetic shielding film.
In the present embodiment, the process holes 13 are disposed on one side of the release paper 1, and the process holes 13 are disposed on one side of one of the positioning holes 12, which is helpful for stack management of the electromagnetic shielding films.
In this embodiment, the thickness of the second graphite heat sink 7 is set to 0.01-0.015mm, the thickness of the first graphite heat sink 6 is consistent with the thickness of the second conductive copper foil 4, the thickness of the second conductive copper foil 4 is set to 2/3 of the thickness of the first conductive copper foil 2, and the thickness of the first conductive copper foil 2 is set to 0.15-0.3mm, so as to increase the toughness and strength, the bearing capacity, and the heat conduction and dissipation performance of the electromagnetic shielding film, and to facilitate the design of the electromagnetic shielding film to be light and thin, thereby facilitating the heat transfer.
In this embodiment, a vertical cutting line 14 is disposed on the release paper 1, the cutting line 14 is used for dividing the release paper 1 into two parts, and the cutting line 14 is located in the middle of the first conductive copper foil 2; the thickness of the release paper 1 and the protective film 10 is set to be 0.1-0.15mm, so that the release paper 1 can be peeled off conveniently and the electromagnetic shielding film can be mounted and adhered conveniently.
Specifically, when in actual use, peel off the type paper 1 of electromagnetic shielding film one side through protection film 10 earlier, then, aim at the electronic component on the circuit board with the first graphite fin 6 of one side that the electromagnetic shielding film was peeled off and wherein one side pastes on the circuit board, then, peel off the type paper 1 of electromagnetic shielding film opposite side, and paste the circuit board, peel off protection film 10 at last, thereby accomplish pasting of electromagnetic shielding film, make the heat on the electronic component can transmit to first conductive copper foil 2 and second graphite fin 7 through first graphite fin 6, make electronic component can obtain quick heat dissipation. The heat dissipation device is novel in design, simple in structure and convenient to use, heat emitted by the chip in the electronic component can be effectively conducted to the conductive copper foil by sticking the heat dissipation device to the chip in the electronic component of the mobile phone, and then the heat is quickly conducted to the graphite heat dissipation sheet by the conductive copper foil, so that a channel for quickly conducting and dissipating heat is built, the purpose of quickly conducting and dissipating heat is achieved, and the experience effect of the mobile phone is favorably improved; the utility model has stable structure, is not easy to damage, has long service life and high temperature resistance, and can be beneficial to the long-term use of electronic components; the utility model has light and thin design, can meet the light and thin requirements of the existing market on electronic products, has good toughness, and is not easy to wrinkle, deform, break or tear during bonding operation.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The utility model provides an electromagnetic shielding film for cell-phone, includes from type paper (1) and sets up the electromagnetic shielding film on from type paper (1), its characterized in that: the electromagnetic shielding film comprises a first conductive copper foil (2), and a first conductive adhesive (3), a second conductive copper foil (4), a second conductive adhesive (5) and a first graphite radiating fin (6) which are arranged at the bottom of the first conductive copper foil (2) and connected with a release paper (1), wherein the first graphite radiating fin (6) is arranged in the middle of the first conductive copper foil (2) in a square shape, the second conductive adhesive (5) is arranged around the first graphite radiating fin (6), the second conductive copper foil (4) is arranged around the second conductive adhesive (5), the first conductive adhesive (3) is arranged around the second conductive copper foil (4), a layer of second graphite radiating fin (7) is arranged at the top of the first conductive copper foil (2), and the second graphite radiating fin (7) isolates the first conductive copper foil (2) into an upper conductive area (8) and a lower conductive area (9), and protective films (10) connected with the second graphite radiating fins (7) are arranged on the upper conductive area (8) and the lower conductive area (9).
2. The electromagnetic shielding film for cellular phone according to claim 1, wherein: the first conductive copper foil (2) is arranged in a rectangular shape.
3. The electromagnetic shielding film for cellular phone according to claim 1, wherein: extension parts (11) extending out of the first conductive copper foil (2) are arranged on two sides of the protective film (10), and positioning holes (12) are formed in the extension parts (11).
4. The electromagnetic shielding film for cellular phone according to claim 1, wherein: one side of the release paper (1) is provided with a fabrication hole (13), and the fabrication hole (13) is positioned on one side of one of the positioning holes (12).
5. The electromagnetic shielding film for cellular phone according to claim 1, wherein: the thickness of the second graphite radiating fin (7) is set to be 0.01-0.015mm, the thickness of the first graphite radiating fin (6) is consistent with that of the second conductive copper foil (4), the thickness of the second conductive copper foil (4) is set to be 2/3 of that of the first conductive copper foil (2), and the thickness of the first conductive copper foil (2) is set to be 0.15-0.3 mm.
6. The electromagnetic shielding film for cellular phone according to claim 1, wherein: a vertical cutting line (14) is arranged on the release paper (1), the cutting line (14) is used for dividing the release paper (1) into two parts, and the cutting line (14) is positioned in the middle of the first conductive copper foil (2); the thickness of the release paper (1) and the protective film (10) is set to be 0.1-0.15 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122222819.0U CN215835784U (en) | 2021-09-14 | 2021-09-14 | Electromagnetic shielding film for mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122222819.0U CN215835784U (en) | 2021-09-14 | 2021-09-14 | Electromagnetic shielding film for mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215835784U true CN215835784U (en) | 2022-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122222819.0U Active CN215835784U (en) | 2021-09-14 | 2021-09-14 | Electromagnetic shielding film for mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215835784U (en) |
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2021
- 2021-09-14 CN CN202122222819.0U patent/CN215835784U/en active Active
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