CN205800351U - Graphite+metal forming+foam buffering heat sink compound - Google Patents
Graphite+metal forming+foam buffering heat sink compound Download PDFInfo
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- CN205800351U CN205800351U CN201620186937.7U CN201620186937U CN205800351U CN 205800351 U CN205800351 U CN 205800351U CN 201620186937 U CN201620186937 U CN 201620186937U CN 205800351 U CN205800351 U CN 205800351U
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Abstract
The utility model discloses 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.By the way, this utility model can heat conductivity good, rapid heat dissipation, it is possible to effectively shielding interference signal.
Description
Technical field
This utility model relates to electronic heating component technical field of heat dissipation, particularly relates 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.
Utility model content
This utility model is mainly solving the technical problems that 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 this utility model 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 one preferred embodiment of this utility model, the finished product thickness of described heat sink compound is 42 microns-1570 microns.
In one preferred embodiment of this utility model, the double faced adhesive tape thickness between described graphite linings and metal foil layer is between 2-10 micron.
In one preferred embodiment of this utility model, described metal foil layer is any one in copper or aluminum, and metal foil thickness is between 10-50 micron.
In one preferred embodiment of this utility model, 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 one preferred embodiment of this utility model, described graphite linings is any one in electrographite or native graphite, and graphite linings thickness is 10 microns-500 microns.
The beneficial effects of the utility model are: this utility model excellent in heat dissipation effect, more have splendid electro-magnetic screen function, can control the temperature of heat generating component, 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 structural representation of the present utility model；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the assembling structural representation that this utility model is applied in mobile phone；
Fig. 4 is the febrile state schematic diagram that this utility model is applied in mobile phone；
Fig. 5 is the top view of this utility model Fig. 4.
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 preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus protection domain of the present utility model is made apparent clear and definite defining.
Refer to Fig. 1 and Fig. 2, this utility model embodiment 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 between 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 any one in electrographite or native graphite, and graphite linings 1 thickness is 10 microns-500 microns.
nullThis utility model 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 and Figure 5, 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 this utility model graphite 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 100Kg f/m-200Kg f/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.
This utility model 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 embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description 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 scope of patent protection of the present utility model.
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 between 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 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 |
|---|---|---|---|
| CN201620186937.7U CN205800351U (en) | 2016-03-11 | 2016-03-11 | Graphite+metal forming+foam buffering heat sink compound |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620186937.7U CN205800351U (en) | 2016-03-11 | 2016-03-11 | Graphite+metal forming+foam buffering heat sink compound |
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| CN205800351U true CN205800351U (en) | 2016-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818475A (en) * | 2016-03-11 | 2016-08-03 | 奇华光电（昆山）股份有限公司 | Graphite, metal foil, and foam buffer composite cooling fin |
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2016
- 2016-03-11 CN CN201620186937.7U patent/CN205800351U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818475A (en) * | 2016-03-11 | 2016-08-03 | 奇华光电（昆山）股份有限公司 | Graphite, metal foil, and foam buffer composite cooling fin |
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