CN105818475A - Graphite, metal foil, and foam buffer composite cooling fin - Google Patents
Graphite, metal foil, and foam buffer composite cooling fin Download PDFInfo
- Publication number
- CN105818475A CN105818475A CN201610138531.6A CN201610138531A CN105818475A CN 105818475 A CN105818475 A CN 105818475A CN 201610138531 A CN201610138531 A CN 201610138531A CN 105818475 A CN105818475 A CN 105818475A
- Authority
- CN
- China
- Prior art keywords
- graphite
- metal foil
- foam
- layer
- heat sink
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/005—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile
- B32B9/007—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising one layer of ceramic material, e.g. porcelain, ceramic tile comprising carbon, e.g. graphite, composite carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/041—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/02—2 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/212—Electromagnetic interference shielding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/302—Conductive
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention discloses a graphite, metal foil, and foam buffer composite cooling fin, which comprises a graphite layer and a metal foil layer. A layer of circular double-faced foam glue is adhered on one surface of the graphite layer, the metal foil layer is adhered on the other side of the graphite layer through a double-faced adhesive tape, and a layer of circular double-faced foam glue is adhered on the surface of the metal foil layer. Through the technical scheme mentioned above, the cooling fin has a good thermal conductivity, can radiate heat rapidly, and is capable of effectively shielding the interference signals.
Description
Technical field
The present invention relates to electronic heating component technical field of heat dissipation, particularly relate to a kind of graphite+metal forming+foam buffering heat sink compound.
Background technology
At present, CPU generates heat because of high-speed cruising, the mobile phone researched and developed for improving its speed of service, tablet PC, notebook and the demand of TV and display screen usage amount increase, the demand of display screen high brightness makes light emitting diode usage amount increase, also the caloric value of equipment is strengthened, battery power consumption increases simultaneously, battery capacity also and then improves so that display apparatus generates heat more because power consumption strengthens, as can not be effectively controlled heating, not only high temperature makes CPU operating go wrong or loss of function, also can make heat-producing device shortening in service life.And because heat sink material must be imported under the condition of high temperature, again because of mobile phone and the in-house limited space of tablet PC.So traditional thick and heavy radiating subassembly cannot be used, it is necessary to use thin fin material.
Because hand communication machine and tablet PC do not design radiator fan, so the heat that device interior produces need to be reached fin by heater, reached casing by fin again to dispel the heat, but because of handheld device inherent space constraints, use thin radiative material, the heat of equipment can major part concentrate on away from the near place of heater so that casing each portion temperature of handheld device is uneven, makes hand-held feel be deteriorated.In smart mobile phone function from strength to strength, interior of mobile phone structure is the most complicated, but the size of mobile phone is more and more thinner, so no matter mobile phone interior circuit board, battery and display liquid crystal display screen are required for ultrathin, just can meet user requirement.
After interior of mobile phone structuring thinning, each part part the closer to, but because of smart mobile phone function and the lifting of speed, institute's palpus electric energy and power consumption will be bigger, so each part part caloric value is bigger, the most especially the most serious with LCDs, hands machine because of multi information, LCDs that need be bigger, and the display brightness that finer picture is the brightest, the backlight module providing liquid crystal display need more light emitting diode, also more heat is just produced, and the position of light emitting diode is between LCDs and circuit board, heat for light emitting diode dissipates via shell, liquid crystal display and circuit board become a kind of heat rejection, the heat making light guide plate cannot dissipate, cause local pyrexia too high, both affected liquid crystal display to also result in because when amount of localized heat height makes hand-held, feel is bad.
And in mobile phone after each structuring thinning, liquid crystal display also wants thinning, namely the glass plate of liquid crystal display wants thinning, glass of liquid crystal display plate thinning is made when after the touch screen that hands touches by tactile liquid crystal display, because the pressurization of finger makes glass deformation, display picture is caused to become water ripples or change color and affect use.
Summary of the invention
The technical problem that present invention mainly solves is to provide a kind of graphite+metal forming+foam buffering heat sink compound, and heat conductivity is good, rapid heat dissipation, it is possible to effectively shielding interference signal.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provide a kind of graphite+metal forming+foam buffering heat sink compound, including: graphite linings and metal foil layer, the one side of described graphite linings attaches one layer of ring double-side foam rubber, the another side of described graphite linings attaches metal foil layer by double faced adhesive tape, and the surface of described metal foil layer also attaches one layer of ring double-side foam rubber.
In a preferred embodiment of the present invention, the finished product thickness of described heat sink compound is 42 microns-1570 microns.
In a preferred embodiment of the present invention, the double faced adhesive tape thickness in described graphite linings and metal foil layer is between 2-10 micron.
In a preferred embodiment of the present invention, described metal foil layer is any one in copper or aluminum, and metal foil thickness is between 10-50 micron.
In a preferred embodiment of the present invention, described Double-side foam celloidin is any one in conducting foam glue or non-conductive both foam rubber, and described Double-side foam celloidin thickness is between 10-1000 micron.
In a preferred embodiment of the present invention, described graphite linings is by any one in electrographite or native graphite, and graphite linings thickness is 10 microns-500 microns.
The invention has the beneficial effects as follows: excellent in heat dissipation effect of the present invention, more have splendid electro-magnetic screen function, the temperature of heat generating component can be controlled, and the components and parts being easily disturbed can be made to be kept away protection by electromagnetic screen.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the assembling structural representation that the present invention is applied in mobile phone；
Fig. 4 is the febrile state schematic diagram that the present invention is applied in mobile phone.
In accompanying drawing, the labelling of each parts is as follows: 1, graphite linings；2, metal foil layer；3, Double-side foam celloidin；4, double faced adhesive tape；5, light guide plate；6, light emitting diode；7, circuit board；8, display；9, mobile phone shell；10, display screen.
Detailed description of the invention
Below in conjunction with the accompanying drawings presently preferred embodiments of the present invention is described in detail, so that advantages and features of the invention can be easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clear and definite defining.
Refer to Fig. 1 and Fig. 2, the embodiment of the present invention includes: a kind of graphite+metal forming+foam buffering heat sink compound, including: graphite linings 1 and metal foil layer 2, the one side of described graphite linings 1 attaches one layer of ring double-side foam rubber 3, the another side of described graphite linings 1 attaches metal foil layer 2 by double faced adhesive tape 4, and the surface of described metal foil layer 2 also attaches one layer of ring double-side foam rubber 3.
Furtherly, the finished product thickness of described heat sink compound is 42 microns-1570 microns；Double faced adhesive tape thickness in described graphite linings 1 and metal foil layer 2 is between 2-10 micron；Described metal foil layer 2 is any one in copper or aluminum, and metal foil thickness is between 10-50 micron；Described Double-side foam celloidin 3 is any one in conducting foam glue or non-conductive both foam rubber, and described Double-side foam celloidin 3 thickness is between 10-1000 micron；Described graphite linings 1 is 10 microns-500 microns by any one in electrographite or native graphite, graphite linings 1 thickness.
nullThe present invention is as a example by mobile phone，In inside plus heat sink compound，As shown in Figure 3，Based on conventional graphite fin，Light guide plate 5 part at interior of mobile phone，It is attached on the reflector plate of light guide plate 5 with graphite linings 1 entirety，So heat of light emitting diode 6 will conduct to whole light guide plate 5 via the graphite of high thermal conductivity，Also conduct to full wafer circuit board 7，Light emitting diode 6 heating region because of 1 original single-point of graphite linings extends to the area of whole liquid crystal display 8，The conduction of heat of single-point to the biggest area，So light emitting diode 6 temperature declines，And light guide plate 5 and display 8 temperature slightly rise，The position of light emitting diode 6 and the position temperature difference away from light emitting diode 6 is made to reduce，The temperature making mobile phone shell 9 the most never adds the single-point high temperature of graphite linings and becomes low temperature in the entirety having added graphite linings，Namely originally concentrate on the little area highest temperature at heater position，Affect casing 9 and also become the little area highest temperature of concentration，And because of the heat diffusion of graphite linings 1 hot concentrated area originally，The highest temperature value making casing 9 temperature reduces，And reduce the discomfort of handheld mobile phone.As shown in Figure 4, after the light guide plate 5 of liquid crystal display 8 sticks the graphite linings 1 as light guide plate 5 area, the change of temperature on mobile phone.
nullThe advantage that graphite of the present invention attaches one layer of Copper Foil: due to reception and the very high frequency of transmitting signal part of mobile phone，General at 900MHz-1.8GHz，And liquid crystal display 8 local concussion frequency only counts MHz，Liquid crystal display 8 rate of scanning is also between thousands of Hz to tens thousand of Hz，But space is little in mobile phone，Circuit board of mobile phone 7 is to be close together with LCDs 10，Centre only alternating floor light guide plate 5，So ultra-high frequency signal of circuit board of mobile phone 7 easily disturbs the work of liquid crystal display 8，So pasting layer of metal layers of foil 2 in the graphite linings 1 of liquid crystal display 8 heat transmission strengthening light guide plate 5，The high frequency on isolation circuit board 7 can be played and the low frequency on liquid crystal display 8 interferes with each other，And solve liquid crystal display 8 because of circuit board 7 High-frequency Interference generation picture snowflake、Noise and the problem of float.
Because of the addition of metal forming in heat sink compound, can fix with metal bolts in equipment assembles and be connected with ground terminal, and because the conductive characteristic of metal forming constitutes earth-return circuit, and radiative material covers on the chip of equipment, directly cover the most disturbed chip, constitute optimal electromagnetic shielding effect.Because of the addition of metallic foil substrates, the tension failure value in its X-Y direction (horizontal direction) is 100Kgf/m-200Kgf/m, is 10 times of current condition of equivalent thickness graphite flake.No matter composite sheet thickness is how many, its bent angle is 180 degree, bent number of times is 100 times, without making the fracture of graphite+metal forming composite sheet make heat dissipation reduce, this be single graphite heat radiation fin cannot bear bend more than 90 degree and cannot bear repeatedly bend incomparable.Its anti-high screen interference performance is 60-80db (decibel) (10MHz ~ 1GHz), because of the good conductive properties of Copper base material and the excellent heat conductivity of composite sheet and heat dissipation characteristics, cannot can construct earth lead because of limited space in equipment assembles simultaneously, when fin and electromagnetic shielding sheet, substitute with single graphite+metal forming fin, and then make equipment miniaturization cost-effective and be easy to assemble.
When mobile phone uses the composite wood of graphite+metal forming+conducting foam, except playing assembling cushioning effect, conductive characteristic because of conducting foam, the anti-tampering sheet metal installed additional on former mobile phone can be reduced, because the composite wood of graphite+metal forming+conducting foam uses, conducting foam be attached at circuit board and with sheet between, the earth-return circuit that can make circuit board makees electrical equipment with sheet metal and is connected, form anti-interference loop, at the most complicated mobile phone assembling procedure, use the composite wood of graphite+metal forming+conducting foam, mobile phone temp both can have been made to uniform, also make mobile phone assemble and simplify.
The present invention utilizes the composite wood of graphite+metal forming+foam, the problem that on disposable solution mobile phone light guide panel, light-emitting diodes tubular heat cannot transfer out, also mobile phone electromagnetism and the problem of high frequency mutual interference are reduced because metal material adds, simultaneously because of the addition of independent two-layer Double-side foam celloidin, reduce hands and only press the problem that display easily produces water ripples.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in the scope of patent protection of the present invention.
Claims (6)
1. graphite+metal forming+foam buffering heat sink compound, it is characterized in that, including: graphite linings and metal foil layer, the one side of described graphite linings attaches one layer of ring double-side foam rubber, the another side of described graphite linings attaches metal foil layer by double faced adhesive tape, and the surface of described metal foil layer also attaches one layer of ring double-side foam rubber.
Graphite+metal forming the most according to claim 1+foam buffering heat sink compound, it is characterised in that: the finished product thickness of described heat sink compound is 42 microns-1570 microns.
Graphite+metal forming the most according to claim 1+foam buffering heat sink compound, it is characterised in that: the double faced adhesive tape thickness in described graphite linings and metal foil layer is between 2-10 micron.
Graphite+metal forming the most according to claim 1+foam buffering heat sink compound, it is characterised in that: described metal foil layer is any one in copper or aluminum, and metal foil thickness is between 10-50 micron.
Graphite+metal forming the most according to claim 1+foam buffering heat sink compound, it is characterised in that: described Double-side foam celloidin is any one in conducting foam glue or non-conductive both foam rubber, and described Double-side foam celloidin thickness is between 10-1000 micron.
Graphite+metal forming the most according to claim 1+foam buffering heat sink compound, it is characterised in that: described graphite linings is by any one in electrographite or native graphite, and graphite linings thickness is 10 microns-500 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610138531.6A CN105818475A (en) | 2016-03-11 | 2016-03-11 | Graphite, metal foil, and foam buffer composite cooling fin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610138531.6A CN105818475A (en) | 2016-03-11 | 2016-03-11 | Graphite, metal foil, and foam buffer composite cooling fin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105818475A true CN105818475A (en) | 2016-08-03 |
Family
ID=56987113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610138531.6A Pending CN105818475A (en) | 2016-03-11 | 2016-03-11 | Graphite, metal foil, and foam buffer composite cooling fin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105818475A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108582939A (en) * | 2018-03-29 | 2018-09-28 | 霸州市云谷电子科技有限公司 | A kind of attaching film and flexible display screen |
| CN109037468A (en) * | 2017-06-09 | 2018-12-18 | 上海和辉光电有限公司 | A kind of display panel |
| CN110275306A (en) * | 2019-06-21 | 2019-09-24 | 潍坊歌尔电子有限公司 | The connection structure that radiates and intelligent glasses |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202603134U (en) * | 2012-05-30 | 2012-12-12 | 苏州沛德导热材料有限公司 | Wave-absorbing graphite flake |
| CN202862691U (en) * | 2012-11-12 | 2013-04-10 | 天津安品有机硅材料有限公司 | Double-faced gum soaking sheet |
| CN104057653A (en) * | 2014-06-13 | 2014-09-24 | 江苏悦达新材料科技有限公司 | Graphite membrane/metal composite cooling fin and preparation method thereof |
| CN203884117U (en) * | 2014-02-28 | 2014-10-15 | 深圳垒石热管理技术有限公司 | Composite graphite heat dissipating film structure |
| CN205800351U (en) * | 2016-03-11 | 2016-12-14 | 奇华光电（昆山）股份有限公司 | Graphite+metal forming+foam buffering heat sink compound |
-
2016
- 2016-03-11 CN CN201610138531.6A patent/CN105818475A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202603134U (en) * | 2012-05-30 | 2012-12-12 | 苏州沛德导热材料有限公司 | Wave-absorbing graphite flake |
| CN202862691U (en) * | 2012-11-12 | 2013-04-10 | 天津安品有机硅材料有限公司 | Double-faced gum soaking sheet |
| CN203884117U (en) * | 2014-02-28 | 2014-10-15 | 深圳垒石热管理技术有限公司 | Composite graphite heat dissipating film structure |
| CN104057653A (en) * | 2014-06-13 | 2014-09-24 | 江苏悦达新材料科技有限公司 | Graphite membrane/metal composite cooling fin and preparation method thereof |
| CN205800351U (en) * | 2016-03-11 | 2016-12-14 | 奇华光电（昆山）股份有限公司 | Graphite+metal forming+foam buffering heat sink compound |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037468A (en) * | 2017-06-09 | 2018-12-18 | 上海和辉光电有限公司 | A kind of display panel |
| CN108582939A (en) * | 2018-03-29 | 2018-09-28 | 霸州市云谷电子科技有限公司 | A kind of attaching film and flexible display screen |
| CN110275306A (en) * | 2019-06-21 | 2019-09-24 | 潍坊歌尔电子有限公司 | The connection structure that radiates and intelligent glasses |
| CN110275306B (en) * | 2019-06-21 | 2021-06-25 | 歌尔光学科技有限公司 | Heat dissipation connection structure and intelligent glasses |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160803 |
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| RJ01 | Rejection of invention patent application after publication |