CN203185770U - Laminated high-heat-conductivity graphite film structure - Google Patents
Laminated high-heat-conductivity graphite film structure Download PDFInfo
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- CN203185770U CN203185770U CN 201320214333 CN201320214333U CN203185770U CN 203185770 U CN203185770 U CN 203185770U CN 201320214333 CN201320214333 CN 201320214333 CN 201320214333 U CN201320214333 U CN 201320214333U CN 203185770 U CN203185770 U CN 203185770U
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Abstract
The utility model provides a laminated high-heat-conductivity graphite film structure, and belongs to the technical field of electronic equipment and materials. The laminated high-heat-conductivity graphite film structure comprises a substrate graphite film, a laminated graphite film and a covering layer, wherein the substrate graphite film is a physical layer consisting of graphite diaphragms, the laminated graphite film is graphite diaphragms laminated on the substrate graphite film, and the covering layer is a protection layer covered on the outer peripheries of the substrate graphite film and the laminated graphite film. The laminated high-heat-conductivity graphite film structure is utilized, the structural form of the laminated high-heat-conductivity graphite film can be utilized, higher heat conduction functions can be provided for electronic terminals, and the local overheating phenomenon of the electronic terminals can be preferably prevented.
Description
Technical field
The utility model belongs to electronic equipment, material technology field.
Technical background
Under current technical conditions, various types of electric terminals are such as notebook computer, panel computer, smart mobile phone, personal digital assistant, handheld navigator, etc., the function of these equipment from strength to strength, arithmetic speed is more and more faster, size is more and more littler on the contrary.
In technological progress, the heat dissipation problem that is difficult to avoid is arranged.The caloric value that mainly is electric terminal might be increasing, and perhaps heat generating spot is more and more concentrated etc.How solving this class problem, is the technical barrier that all electric terminal production firms face.
In current technology, people utilize the graphite film structure with high thermal conductivity to make the highly heat-conductive material of electric terminal.Graphite film divides from originating, and comprises natural stone ink film and artificial stone ink film two classes.Natural stone ink film wherein, normally by native graphite as raw material, earlier change it into expanded graphite after, be made as the graphite film material again, serve as the heat conduction purpose.Artificial stone ink film wherein is to adopt the non-graphite raw material, changes it into graphite film material that heat conduction is used by technologies such as chemical process, Physical Processing.
Wherein, especially the thermal conductivity factor with the artificial stone ink film is higher, and pliability is stronger, and the heat radiation that has in the good electron terminal is worth.
But when concentrated the heat radiation position in the electric terminal, the particular heat source location point that how to be directed to wherein provided more effective heat sinking function, was the problem that needs solution at present.
In use, the back cover part of aforementioned electronic terminal generally is in user's gripping state, in this case, if the temperature of back cover is higher, can influence user's use impression significantly.In addition, the type of electric terminal also more and more widely, such as, for the glasses type electric terminal, also can have the problem of heat radiation, in this case, equally high conductive graphite film radiator structure etc. can be set at the housing of glasses type electric terminal.
But in the application process of reality, which type of high conductive graphite film radiator structure is arranged on the electric terminal housing, can be more effectively the heat of electric terminal be played better diffusion, and play the phenomenon of alleviating hot-spot better, still be the technical importance that develops of always needing.
The utility model content
The purpose of this utility model provides the high conductive graphite membrane structure of a kind of cascade type, utilize the utility model, can utilize the version of stacked high conductive graphite film, for electric terminal provides stronger heat conduction function, and the hot-spot phenomenon that prevents electric terminal better.
The high conductive graphite membrane structure of a kind of cascade type provided by the utility model comprises:
The base material graphite film, it is the Physical layer that graphite film is formed;
The stack graphite film, it is the graphite film that is superimposed upon on the aforementioned substrates graphite film;
Clad, it is the protective layer that is coated on aforementioned substrates graphite film and stack graphite film periphery.
Further, described clad is that the inboard is coated with adhesive, the plastic foil of thickness between the 0.5-20.0 micron.
Further, described base material graphite film pastes mutually with measure-alike, the position of stack graphite film.
Further, described base material graphite film or stack graphite film are the graphite film of thickness between the 1-300 micron.
Further, described stack graphite film, the number of plies of setting comprises 1 layer or 4 layers between the 1-4 layer.
Further, between described base material graphite film and the stack graphite film, be provided with adhesive layer.
Further, between described base material graphite film and the stack graphite film, add and be equipped with thermal insulation layer.
Further, the thickness of described thermal insulation layer is between the 0.5-40.0 micron.
Further, between described base material graphite film and the stack graphite film, add the metal wire layer that is equipped with arranging bonding jumper or woven wire.
Further, between described base material graphite film and the stack graphite film, add and be equipped with the metallic particles layer.
Further, described base material graphite film is one deck natural stone ink film, and described stack graphite film is two artificial stone ink films that place this natural stone ink film upside and downside respectively.
Description of drawings
Fig. 1 is the schematic diagram of the high conductive graphite membrane structure of cascade type described in the utility model, is a kind of embodiment.
Fig. 2 is the schematic diagram of the high conductive graphite membrane structure of cascade type described in the utility model, for being provided with the embodiment of thermal insulation layer.
Fig. 3 is the schematic diagram of the high conductive graphite membrane structure of cascade type described in the utility model, for being provided with the embodiment of metal wire layer.
Fig. 4 is the schematic diagram of the high conductive graphite membrane structure of cascade type described in the utility model, for being provided with the embodiment of metallic particles layer.
Fig. 5 is the schematic diagram of the high conductive graphite membrane structure of cascade type described in the utility model, is that the base material graphite film is one deck natural stone ink film, and the stack graphite film is two embodiment that lay respectively at the artificial stone ink film of upside and downside.
Specific embodiment
Embodiment 1
Join shown in Figure 1ly, showed the structural representation of the high conductive graphite membrane structure 100 of a kind of cascade type here, it is to show with the form of explosive view.
In the high conductive graphite membrane structure 100 of this cascade type, comprise following part from top to bottom successively:
Base material graphite film 120, it is the Physical layer that graphite film is formed, and is positioned at the downside of aforementioned first clad 110;
, aforesaid clad is not set at described base material graphite film 120 and stack graphite film 130 between the two, clad is in order to be arranged on both peripheries of base material graphite film 120 and stack graphite film 130.
Aforesaid first clad 110 and second clad 140, both are fit to adopt the plastic foil of thickness between the 0.5-20.0 micron to realize, such as, the PET film in this thickness range etc.This class plastic sheeting has good toughness, anti-bending, and insulating properties are good, resists and wears the coefficient height.
For make win clad 110 and second clad 140 both aforesaid base material graphite film 120 and stack graphite film 130 can be wrapped up and fixing, be adapted at first clad 110 and both inboard coated adhesive of second clad 140, this adhesive is preferably pressure sensitive adhesive, utilize coated adhesive, face toward the base material graphite film 120 or the stack graphite film 130 that are close to and carry out fixing operation.And utilize coated adhesive, carry out first clad 110 and second clad 140 fixing operation between the two.
Set base material graphite film 120 and stack graphite film 130, both sizes as preferred embodiment, are identical, this scheme is convenient to processing.On the other hand, base material graphite film 120 and stack graphite film 130 boths are fit to thin flake structure, are fit to pressing close to each other to arrange.
In the utility model, selected graphite film both can be the artificial stone ink film, can be the natural stone ink film also, as long as have good heat-conducting, and anti-bending preferably, can use.The thickness of selected graphite film is adapted between the 1-300 micron, the graphite film in this thickness, and its structure is frivolous, and pliability and anti-bending are easier to guarantee.
In the utility model, described base material graphite film 120 and stack graphite film 130, both concepts are relative.With respect to base material graphite film 120, the number of plies of set stack graphite film 130 is fit to be selected between the 1-4 layer, and it comprises 1 layer or 4 layers.Particularly, under the situation that is provided with 1 layer of base material graphite film 120, if be provided with 1 layer stack graphite film 130, so, have two graphite films and pressing close to arrange; If under the situation that is provided with 1 layer of base material graphite film 120,4 layers stack graphite film 130 is set, so, the graphite film that will be of five storeys is altogether formed the structure of distributing of heat.
Graphite film has special heat conductivility, mainly is that the face thermal conductivity factor is very high, but very low perpendicular to the radially thermal conductivity factor of face.This specific character, especially can be applied to electric terminal, be pasted with under the situation of graphite film, can make the heat of concentration of local pass through the face thermal conductivity factor of very high graphite film, to diffusion all around, and by very low radially thermal conductivity factor, then can reduce the excessive temperature value of regional area, the feel and the experience that influence because of hot-spot when alleviating the user's handling electric terminal.
But in use, if the hot-spot of electric terminal, the graphite film that still characteristic of hot-spot may be seen through individual layer is delivered to the electric terminal housing parts, in this case, the utility model has adopted the scheme of base material graphite film 120 and stack graphite film 130, just can alleviate the generation of hot-spot phenomenon better by the more graphite film of stack.
Aforesaid base material graphite film 120 and stack graphite film 130 also are fit to arrange adhesive layer between the two.Utilize set adhesive layer can realize two effects: one, realize base material graphite film 120 and stack graphite film 130 tight fixing between the two; They are two years old, the thermal conductivity factor of adhesive layer is all very low usually, this very low thermal conductivity factor can provide on the contrary be close to, earlier heat is fully transmitted by self high face thermal conductivity factor near the graphite film of thermal source after, be sent to again on the graphite film of this adhesive layer opposite side, thereby avoid the hot-spot phenomenon of electric terminal better.
Embodiment 2
Join shown in Figure 2ly, showed the another kind of embodiment of the high conductive graphite membrane structure 200 of cascade type here, it is to show with the form of explosive view.
In the high conductive graphite membrane structure 200 of this cascade type, comprise following part from top to bottom successively:
Base material graphite film 220, it is the Physical layer that graphite film is formed, and is positioned at the downside of aforementioned first clad 210;
In the present embodiment, significantly the technical characterictic of difference is:, be provided with thermal insulation layer 230 at base material graphite film 220 and stack graphite film 240 between the two.Described thermal insulation layer here, refer to the low material layer of thermal conductivity factor, for example and without limitation, this thermal insulation layer is to realize by lightweight, flexibility and thermal conductivity factor low foam or structures such as sponge or braided material or plastic foil, in addition, also can be with realizations such as the expanded material of hard or aerogel materials.
Be provided with after the thermal insulation layer 230, because the thermal conductivity factor of thermal insulation layer is low, can realize unique benefit.As an example, if having pyrotoxin above aforementioned first clad 210, if this thermal insulation layer 230 is not set, then heat at first transfers on the base material graphite film 220 by first clad 210.And then by base material graphite film 220 be sent to the stack graphite film 240 on.As current common application example, the high conductive graphite film of using in smart mobile phone adopts Delanium mostly, its face thermal conductivity factor is 1300-1900W/(mk), and be 3-10W/(mk towards vertical radially thermal conductivity factor), and thickness mostly is 25 microns greatly.Base material graphite film 220 and both thickness of stack graphite film 240 got wherein are 25 microns.Under smart mobile phone is in running order, if the temperature that device works such as chip wherein or LED lamp produce is higher than peripheral 20-30 degree centigrade, this temperature difference is transmitted with the heat that stack graphite film 240 passes through radially by aforementioned very thin base material graphite film 220, can conduct fast equally, this just makes the temperature difference of concentration of local can be transferred to equally outside the stack graphite film 240, and second outside the clad 250, influences user's use feel.
But in the present embodiment, be provided with after the aforesaid thermal insulation layer 230, because of the thermal conductivity factor of thermal insulation layer 230 low, just make the heat that aforementioned pyrotoxin sends, at first can on aforesaid base material graphite film 220, fully transmit, it is comparatively even that its heat is distributed, and then by thermal insulation layer 230 be delivered to the stack graphite film 240 on the time, the heat of concentration of local fully disperses, just make via the heat of stack graphite film 240 to 250 transmission of second clad, fully avoid the phenomenon of hot-spot, had the serviceability that significantly improves.
Embodiment 3
Joining shown in Figure 3ly, showed the another kind of embodiment of the high conductive graphite membrane structure 300 of a kind of cascade type here, is to show with the form of explosive view.
In the high conductive graphite membrane structure 300 of this cascade type, include following part from top to bottom successively:
First clad 310, it is arranged on the protective layer of base material graphite film 320 upsides;
Base material graphite film 320, it is the Physical layer that graphite film is formed, and is positioned at the downside of aforementioned first clad 310;
Stack graphite film 340, it is arranged on the graphite film of aforementioned metal silk layer 330 downside;
Second clad 350, it is arranged on the protective layer of stack graphite film 340 downsides.
First clad 310 in the present embodiment and the technical characterictic of second clad 350, consistent with embodiment 1; The technical characterictic of the base material graphite film 320 in the present embodiment and stack graphite film 340, also consistent with embodiment 1.
The remarkable difference of present embodiment and embodiment 1 is:, be provided with metal wire layer 330 at base material graphite film 320 and stack graphite film 340 between the two.Described metal wire layer 330 here, mainly contain the scheme of two kinds of realizations, one of them is to implement by bonding jumper, described bonding jumper is fit to arrange with parallel form here, these bonding jumpers should have the restriction of thickness aspect, as an example, the diameter of bonding jumper is adapted between 1 micron to 300 microns, all is inconvenient to arrange bigger or forr a short time.Wherein two, be to implement by the wire netting that wire is compiled, to the restriction of size condition wiry in the wire netting, consistent with the restriction of aforementioned metal bar.
Set metal wire layer 330 has special use value, and this is because under the use state, is adjacent to together between aforesaid first clad 310, base material graphite film 320, metal wire layer 330, stack graphite film 340 and second clad 350.In the process that is adjacent to, aforesaid metal wire layer 330 can be partially embedded among aforesaid base material graphite film 320 and the stack graphite film 340.Because base material graphite film 320 or stack graphite film 340, their face thermal conductivity factor all can be very high, and radially thermal conductivity factor is all very low, but set metal wire layer 330, its heat conduction aspect is isotropic, so part is adjacent to or is embedded into base material graphite film 320 or the bonding jumper of stack in the graphite film 340, can improve the radially heat-sinking capability in the graphite film zone at place, make heat to transmit more quickly.
Embodiment 4
Joining shown in Figure 4ly, showed the another kind of embodiment of the high conductive graphite membrane structure 400 of a kind of cascade type here, is to show with the form of explosive view.
In the high conductive graphite membrane structure 400 of this cascade type, include following part from top to bottom successively:
First clad 410, it is arranged on the protective layer of base material graphite film 420 upsides;
Base material graphite film 420, it is the Physical layer that graphite film is formed, and is positioned at the downside of aforementioned first clad 410;
Stack graphite film 440, it is arranged on the graphite film of aforementioned metal silk layer 430 downside;
Second clad 450, it is arranged on the protective layer of stack graphite film 440 downsides.
First clad 410 in the present embodiment and the technical characterictic of second clad 450, consistent with embodiment 1; The technical characterictic of the base material graphite film 420 in the present embodiment and stack graphite film 440, also consistent with embodiment 1.
The remarkable difference of present embodiment and embodiment 1 is:, be provided with metallic particles layer 430 at base material graphite film 420 and stack graphite film 440 between the two.Described metallic particles layer 430 here, for example and without limitation, typical embodiment has two kinds: one of them is to implement by the metal ball, described metal ball is fit to evenly arrange with the form of array here, further, these metal balls there is the restriction of yardstick aspect, typically, the diameter of metal ball is adapted between 1 micron to 300 microns, all is inconvenient to arrange bigger or forr a short time.Wherein two, be to implement by hemispherical bead, with a side on the plane of hemispherical bead, be placed in base material graphite film 420 and stack graphite film 440, can reduce material and press close to corner angle in the process, improve yield rate.
The metallic particles layer 430 that present embodiment is set, compared with the metal wire layer among the last embodiment, metallic particles is easier to be embedded in adjoining base material graphite film 420 or the stack graphite film 440.Utilize the isotropism of metallic particles aspect heat conduction, and the metallic particles good heat-conducting, can improve the radially heat-sinking capability in graphite film zone, metallic particles place more effectively, make heat to transmit more quickly.
Embodiment 5
Join shown in Figure 5ly, showed the another kind of embodiment of the high conductive graphite membrane structure 500 of cascade type here, it is to show with the form of explosive view.
In the high conductive graphite membrane structure 500 of this cascade type, include following part from top to bottom successively:
First clad 510, it is arranged on the protective layer of the first stack graphite film, 520 upsides;
The first stack graphite film 520, it is the Physical layer that the Delanium diaphragm is formed, and is positioned at the downside of aforementioned first clad 510;
Base material graphite film 530, it is arranged on the native graphite diaphragm of aforementioned first stack graphite film 520 belows, the following second stack graphite film, 540 tops;
The second stack graphite film 540, it is the Delanium diaphragm that is superimposed upon aforementioned substrates graphite film 530 belows;
Second clad 550, it is arranged on the protective layer of the second stack graphite film, 540 downsides.
Further, between each layer, comprise between the first adjacent clad 510, the first stack graphite film 520, base material graphite film 530, the second stack graphite film 540 and second clad 550, the mode of adhesive can further be set, it is interfixed.
The main distinction technical characterictic of present embodiment is: adopt the stronger Delanium diaphragm of the capacity of heat transmission to form the first stack graphite film 520 and the second stack graphite film 540 respectively, be because this first stack graphite film 520 and the second stack graphite film 540 all are positioned at the outside, utilize their high face thermal conductivity factors, the heat diffusion that can quickly the part be received is gone out.And the base material graphite film 530 that utilizes the native graphite diaphragm to make can provide bigger heat conduction cross-sectional area when saving cost (cost of natural stone ink film is far below the artificial stone ink film), promotes comprehensive heat-sinking capability.
The textural association that utilizes present embodiment to express can either be controlled cost effectively, can obtain comprehensive high heat-sinking capability again.
More than be to description of the present utility model and non-limiting, based on other embodiment of the utility model thought, also all among protection domain of the present utility model.
Claims (11)
1. high conductive graphite membrane structure of cascade type is characterized in that this structure comprises:
The base material graphite film, it is the Physical layer that graphite film is formed;
The stack graphite film, it is the graphite film that is superimposed upon on the aforementioned substrates graphite film;
Clad, it is the protective layer that is coated on aforementioned substrates graphite film and stack graphite film periphery.
2. the high conductive graphite membrane structure of a kind of cascade type according to claim 1, it is characterized in that: described clad is that the inboard is coated with adhesive, the plastic foil of thickness between the 0.5-20.0 micron.
3. the high conductive graphite membrane structure of a kind of cascade type according to claim 1 is characterized in that: described base material graphite film pastes mutually with measure-alike, the position of stack graphite film.
4. the high conductive graphite membrane structure of a kind of cascade type according to claim 1 is characterized in that: described base material graphite film or stack graphite film are the graphite film of thickness between the 1-300 micron.
5. the high conductive graphite membrane structure of a kind of cascade type according to claim 1, it is characterized in that: described stack graphite film, the number of plies of setting comprise 1 layer or 4 layers between the 1-4 layer.
6. the high conductive graphite membrane structure of a kind of cascade type according to claim 1 is characterized in that: between described base material graphite film and the stack graphite film, be provided with adhesive layer.
7. the high conductive graphite membrane structure of a kind of cascade type according to claim 1 is characterized in that: between described base material graphite film and the stack graphite film, add and be equipped with thermal insulation layer.
8. the high conductive graphite membrane structure of a kind of cascade type according to claim 7, it is characterized in that: the thickness of described thermal insulation layer is between the 0.5-40.0 micron.
9. the high conductive graphite membrane structure of a kind of cascade type according to claim 1 is characterized in that: between described base material graphite film and the stack graphite film, add the metal wire layer that is equipped with arranging bonding jumper or woven wire.
10. the high conductive graphite membrane structure of a kind of cascade type according to claim 1 is characterized in that: between described base material graphite film and the stack graphite film, add and be equipped with the metallic particles layer.
11. the high conductive graphite membrane structure of a kind of cascade type according to claim 1, it is characterized in that: described base material graphite film is one deck natural stone ink film, and described stack graphite film is two artificial stone ink films that place this natural stone ink film upside and downside respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320214333 CN203185770U (en) | 2013-04-24 | 2013-04-24 | Laminated high-heat-conductivity graphite film structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320214333 CN203185770U (en) | 2013-04-24 | 2013-04-24 | Laminated high-heat-conductivity graphite film structure |
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| CN203185770U true CN203185770U (en) | 2013-09-11 |
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| CN 201320214333 Expired - Lifetime CN203185770U (en) | 2013-04-24 | 2013-04-24 | Laminated high-heat-conductivity graphite film structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231554A (en) * | 2013-04-24 | 2013-08-07 | 常州碳元科技发展有限公司 | Laminated type high heat conduction graphite film structure |
| CN105577861A (en) * | 2016-01-11 | 2016-05-11 | 吴洁虹 | Personalized mobile phone backboard and production method thereof |
| CN107221266A (en) * | 2017-07-05 | 2017-09-29 | 佛山杰致信息科技有限公司 | A kind of New LED advertising lamp box |
| CN107270240A (en) * | 2017-07-05 | 2017-10-20 | 佛山杰致信息科技有限公司 | A kind of LED heat radiation lampshades |
-
2013
- 2013-04-24 CN CN 201320214333 patent/CN203185770U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231554A (en) * | 2013-04-24 | 2013-08-07 | 常州碳元科技发展有限公司 | Laminated type high heat conduction graphite film structure |
| CN103231554B (en) * | 2013-04-24 | 2016-06-01 | 碳元科技股份有限公司 | Cascade type high heat conduction graphite film structure |
| CN105577861A (en) * | 2016-01-11 | 2016-05-11 | 吴洁虹 | Personalized mobile phone backboard and production method thereof |
| CN107221266A (en) * | 2017-07-05 | 2017-09-29 | 佛山杰致信息科技有限公司 | A kind of New LED advertising lamp box |
| CN107270240A (en) * | 2017-07-05 | 2017-10-20 | 佛山杰致信息科技有限公司 | A kind of LED heat radiation lampshades |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU TANYUAN TECHNOLOGY CO., LTD Free format text: FORMER NAME: CHANGZHOU TANYUAN TECHNOLOGY DEVELOPMENT CO., LTD. Owner name: TANYUAN SCIENCE AND TECHNOLOGY CO., LTD. Free format text: FORMER NAME: JIANGSU TANYUAN TECHNOLOGY CO., LTD |
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| CP01 | Change in the name or title of a patent holder |
Address after: 213149 Jiangsu city of Changzhou province Wujin Dragon Road Economic Development Zone No. 2 Building No. eight Patentee after: TANYUAN TECHNOLOGY Co.,Ltd. Address before: 213149 Jiangsu city of Changzhou province Wujin Dragon Road Economic Development Zone No. 2 Building No. eight Patentee before: Jiangsu carbon dollar Polytron Technologies Inc. Address after: 213149 Jiangsu city of Changzhou province Wujin Dragon Road Economic Development Zone No. 2 Building No. eight Patentee after: Jiangsu carbon dollar Polytron Technologies Inc. Address before: 213149 Jiangsu city of Changzhou province Wujin Dragon Road Economic Development Zone No. 2 Building No. eight Patentee before: CHANGZHOU TANYUAN TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20130911 |
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| CX01 | Expiry of patent term |