CN111320946A - Graphite heat dissipation film with multifunctional layer - Google Patents

Graphite heat dissipation film with multifunctional layer Download PDF

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Publication number
CN111320946A
CN111320946A CN202010344208.0A CN202010344208A CN111320946A CN 111320946 A CN111320946 A CN 111320946A CN 202010344208 A CN202010344208 A CN 202010344208A CN 111320946 A CN111320946 A CN 111320946A
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China
Prior art keywords
heat dissipation
layer
film
graphite
multifunctional
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Pending
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CN202010344208.0A
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Chinese (zh)
Inventor
黄飞
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Suzhou Panel Electronic Co ltd
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Suzhou Panel Electronic Co ltd
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Priority to CN202010344208.0A priority Critical patent/CN111320946A/en
Publication of CN111320946A publication Critical patent/CN111320946A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/20Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29Laminated material
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/20Adhesives in the form of films or foils characterised by their carriers
    • C09J7/203Adhesives in the form of films or foils characterised by their carriers characterised by the structure of the release feature on the carrier layer
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/40Adhesives in the form of films or foils characterised by release liners
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00Constructional details common to different types of electric apparatus
    • H05K7/20Modifications to facilitate cooling, ventilating, or heating
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/326Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention provides a graphite heat dissipation film with a multifunctional layer, which comprises the following components in sequential stacking arrangement: the graphite heat dissipation film with the multiple functional layers comprises a heat dissipation functional area, the middle heat dissipation layer is located at the heat dissipation functional area, one end of the heat dissipation functional area is provided with a first avoidance structure, the other end of the heat dissipation functional area is provided with a second avoidance structure, and one side of the heat dissipation functional area is provided with a third avoidance structure; the middle heat dissipation layer is formed by laminating three continuous graphite layers, the continuous graphite layers are bonded and compounded through double faced adhesive tapes, the continuous graphite layer on one side of the middle heat dissipation layer is protected by the release film, and the continuous graphite layer on the other side of the middle heat dissipation layer is protected by the protective film. The middle heat dissipation layer formed by compounding three continuous graphite layers meets the thickness requirement of the heat dissipation film in the notebook computer. Meanwhile, the heat dissipation functional area is designed to be avoided, so that the graphite heat dissipation film is convenient to use in a notebook computer, and interference with other devices is avoided.

Description

Graphite heat dissipation film with multifunctional layer
Technical Field
The invention relates to a heat dissipation film, in particular to a graphite heat dissipation film with a multifunctional layer.
Background
For electronic products, it is often necessary to arrange functional film products inside the products to achieve corresponding purposes, such as heat dissipation and light reflection. For a notebook computer, a film product capable of reflecting light, dissipating heat, shielding and the like needs to be arranged on a main board inside the notebook computer. However, the shape and thickness of the heat dissipation film used in the notebook computer have certain requirements, and therefore, it is necessary to provide a further solution to meet the requirements of the notebook computer.
Disclosure of Invention
The invention aims to provide a graphite heat dissipation film with multiple functional layers, so as to overcome the defects in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a graphite heat dissipation film with multifunctional layers comprises the following components in sequential stacking arrangement: a release film, a middle heat dissipation layer and a protective film,
the graphite heat dissipation film with the multiple functional layers is provided with a heat dissipation functional area, the middle heat dissipation layer is located at the heat dissipation functional area, one end of the heat dissipation functional area is provided with a first avoidance structure, the other end of the heat dissipation functional area is provided with a second avoidance structure, and one side of the heat dissipation functional area is provided with a third avoidance structure;
middle heat dissipation layer is laminated by the continuous graphite layer of three-layer and is formed, bonds through the double faced adhesive tape between each continuous graphite layer and compounds, it is right to leave the type membrane the continuous graphite layer of middle heat dissipation layer one side is protected, the protection film is right the continuous graphite layer of middle heat dissipation layer another side is protected.
As an improvement of the graphite heat dissipation film with multiple functional layers, the first avoiding structure is formed by inwards recessing from the end of the heat dissipation functional region along the length direction, and the first avoiding structure comprises: the first arc-shaped concave part is formed at one right-angle position of the end and the first right-angle concave part is formed at the other right-angle position of the end.
As an improvement of the graphite heat dissipation film with multiple functional layers, the second avoiding structure is formed by inwards recessing from the end of the heat dissipation functional region along the length direction, and the second avoiding structure comprises: the second arc-shaped concave part is formed at a right-angle position at the end, the second right-angle concave part is connected with the second arc-shaped concave part, and the bevel edge concave part is formed at another right-angle position at the end.
As an improvement of the graphite heat dissipation film with multiple functional layers, the third avoiding structure is formed by inwards recessing from one side of the heat dissipation functional region in the width direction and comprises a trapezoidal recessed part.
As an improvement of the graphite heat dissipation film with multiple functional layers, the third avoiding structure is formed by inwards recessing from one side of the heat dissipation functional region in the width direction and comprises a trapezoidal recessed part.
As an improvement of the graphite heat dissipation film with the multiple functional layers, the release film is combined on the continuous graphite layer on one side of the middle heat dissipation layer through double faced adhesive tapes, and the side, combined with the corresponding continuous graphite layer, of the release film is provided with grid-shaped exhaust grooves.
The protective film is bonded on the continuous graphite layer on the other side of the middle heat dissipation layer through a double-sided adhesive tape.
As an improvement of the multifunctional graphite heat dissipating film of the present invention, the protective film comprises: antistatic silica gel protection film and PET polyester film, PET polyester film is located between antistatic silica gel protection film and the middle heat dissipation layer.
As an improvement of the graphite heat dissipation film with multiple functional layers, the antistatic silica gel protective film comprises the following components in sequential stacking arrangement: antistatic layer, transparent polyester film layer, silicon adhesive layer, transparent polyester film.
As an improvement of the graphite heat dissipation film with the multiple functional layers, abdicating salient points are further arranged at the two ends of the protection film on the outer side of the heat dissipation functional area.
Compared with the prior art, the invention has the beneficial effects that: the graphite heat dissipation film disclosed by the invention meets the thickness requirement of the heat dissipation film in a notebook computer by adopting the middle heat dissipation layer compounded by three continuous graphite layers. Meanwhile, the heat dissipation functional area is designed to be avoided, so that the graphite heat dissipation film is convenient to use in a notebook computer, and interference with other devices is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of an embodiment of a multi-functional graphite heat spreading film of the present invention;
FIG. 2 is an exploded view of a multi-functional graphite heat dissipation film according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, an embodiment of the present invention provides a graphite heat dissipation film with a multifunctional layer, which includes: release film 1, middle heat dissipation layer 2, protection film 3.
The graphite heat dissipation film with the multiple functional layers is provided with a heat dissipation functional area, and the middle heat dissipation layer 2 is positioned at the heat dissipation functional area. When the graphite heat dissipation film is used, the heat dissipation functional area is correspondingly arranged on the heat dissipation area in the notebook computer, so that heat dissipation of the heat concentration area in the notebook computer is realized.
In order to meet the use requirement of the notebook computer, one end of the heat dissipation functional area is provided with a first avoidance structure 21, the other end of the heat dissipation functional area is provided with a second avoidance structure 22, and one side of the heat dissipation functional area is provided with a third avoidance structure 23.
In one embodiment, the first avoiding structure 21 is formed by recessing inward from the end of the heat dissipation functional region, and includes: a first arc-shaped recess 211 formed at a right angle position from the end and a first right angle recess 212 formed at another right angle position from the end. Wherein, the first arc-shaped recess 211 and the first right-angle recess 212 are separately disposed.
The second avoiding structure 22 is formed by inwards recessing from the end of the heat dissipation functional region in the length direction, and comprises: a second arc-shaped recess 221 formed at a right angle position from the end, a second right-angle recess 222 connected to the second arc-shaped recess 221, and a hypotenuse recess 223 formed at another right angle position from the end.
The third avoiding structure 23 is formed by being recessed inward in the width direction from one side of the heat dissipation functional region where the third avoiding structure is located, and includes a trapezoidal recessed portion 231. Therefore, by arranging the avoidance structures, the heat dissipation functional area can be concentrated in the area where heat is concentrated in the notebook computer, and interference with other devices is avoided.
Because the single-layer graphite layer cannot be very thick, in order to meet the thickness requirement of the heat dissipation film in the notebook computer, the middle heat dissipation layer 2 is formed by laminating three continuous graphite layers 24, and the continuous graphite layers 24 are bonded and compounded through a double-sided adhesive tape 25. Wherein, the double faced adhesive tape 25 is an ultra-thin double faced adhesive tape, and the double faced adhesive tapes mentioned below are also ultra-thin double faced adhesive tapes, and the ultra-thin double faced adhesive tape is a double faced adhesive tape of an acrylic adhesive layer on two sides of the middle PET substrate.
The release film 1 protects the continuous graphite layer 24 on one side of the intermediate heat dissipation layer 2. In one embodiment, the release film 1 is bonded to the continuous graphite layer 24 on one side of the intermediate heat sink layer 2 by double-sided tape. Meanwhile, a latticed exhaust groove is formed in the surface, combined with the corresponding continuous graphite layer 24, of the release film 1. So along with from the complex of type membrane 1 and middle heat dissipation layer 2, can realize the effect of good defoaming with the extrusion discharge of the recess of exhausting of gas between the two, realize from the good complex of type membrane 1 and middle heat dissipation layer 2.
The protective film 3 protects the continuous graphite layer 24 on the other side of the intermediate heat dissipation layer 2. In one embodiment, the protective film 3 is bonded to the continuous graphite layer 24 on the other side of the intermediate heat sink layer 2 by double-sided tape.
Specifically, the protective film 3 includes: antistatic silicone protective film 31 and PET polyester film 32, PET polyester film 32 is located between antistatic silicone protective film 31 and intermediate heat dissipation layer 2. Wherein, antistatic silica gel protection film 31 is including range upon range of setting in proper order: antistatic layer, transparent polyester film layer, silicon adhesive layer, transparent polyester film. In order to facilitate the removal of the antistatic silica gel protective film 31 on the outermost side when in use, a pull tab is further connected to the antistatic silica gel protective film 31.
Meanwhile, in order to meet the installation requirement during use, yielding bumps 311 are further arranged at the two ends of the protective film 3 outside the heat dissipation functional area. The yielding convex points 311 at the two ends are just avoided by the first arc-shaped concave part 211 in the first avoiding structure 21 and the second arc-shaped concave part 221 in the second avoiding structure 22.
In summary, the graphite heat dissipation film of the present invention satisfies the thickness requirement of the heat dissipation film in the notebook computer by using the middle heat dissipation layer formed by combining three continuous graphite layers 24. Meanwhile, the heat dissipation functional area is designed to be avoided, so that the graphite heat dissipation film is convenient to use in a notebook computer, and interference with other devices is avoided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A graphite heat dissipation film with multifunctional layers comprises the following components in sequential stacking arrangement: from type membrane, middle heat dissipation layer, protection film, its characterized in that:
the graphite heat dissipation film with the multiple functional layers is provided with a heat dissipation functional area, the middle heat dissipation layer is located at the heat dissipation functional area, one end of the heat dissipation functional area is provided with a first avoidance structure, the other end of the heat dissipation functional area is provided with a second avoidance structure, and one side of the heat dissipation functional area is provided with a third avoidance structure;
middle heat dissipation layer is laminated by the continuous graphite layer of three-layer and is formed, bonds through the double faced adhesive tape between each continuous graphite layer and compounds, it is right to leave the type membrane the continuous graphite layer of middle heat dissipation layer one side is protected, the protection film is right the continuous graphite layer of middle heat dissipation layer another side is protected.
2. The graphite heat dissipation film with multifunctional layers as claimed in claim 1, wherein the first avoiding structure is formed by inward recessing from the end of the heat dissipation functional region, and comprises: the first arc-shaped concave part is formed at one right-angle position of the end and the first right-angle concave part is formed at the other right-angle position of the end.
3. The graphite heat dissipation film of the multifunctional layer as claimed in claim 1 or 2, wherein the second avoiding structure is formed by inwards recessing from the end of the heat dissipation functional region, and comprises: the second arc-shaped concave part is formed at a right-angle position at the end, the second right-angle concave part is connected with the second arc-shaped concave part, and the bevel edge concave part is formed at another right-angle position at the end.
4. The multi-functional layer graphite heat dissipation film according to claim 3, wherein the third avoiding structure is formed by being recessed in a width direction from one side of the heat dissipation functional region, and includes a trapezoidal recess.
5. The graphite heat dissipation film of the multifunctional layer as claimed in claim 1, wherein the third avoiding structure is formed by being recessed from one side of the heat dissipation functional region in a width direction and includes a trapezoidal recess.
6. The multifunctional-layer graphite heat dissipation film according to claim 1, wherein the release film is bonded to the continuous graphite layer on one side of the middle heat dissipation layer by a double-sided adhesive tape, and the side of the release film bonded to the corresponding continuous graphite layer is provided with grid-shaped vent grooves.
7. The multifunctional layered graphite heat dissipating film according to claim 1, wherein the protective film is bonded to the continuous graphite layer on the other side of the intermediate heat dissipating layer by a double-sided adhesive tape.
8. The graphite heat spreading film of multifunctional layer of claim 1 wherein the protective film comprises: antistatic silica gel protection film and PET polyester film, PET polyester film is located between antistatic silica gel protection film and the middle heat dissipation layer.
9. The multi-functional layer graphite heat dissipation film according to claim 8, wherein the antistatic silicone protective film comprises, in order stacked: antistatic layer, transparent polyester film layer, silicon adhesive layer, transparent polyester film.
10. The graphite heat dissipation film with the multifunctional layer as claimed in claim 1, wherein offset bumps are further disposed at two ends of the protection film outside the heat dissipation functional region.
CN202010344208.0A 2020-04-27 2020-04-27 Graphite heat dissipation film with multifunctional layer Pending CN111320946A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112795328A (en) * 2021-01-21 2021-05-14 苏州佳值电子工业有限公司 High-heat-dissipation film with laminated structure and preparation method thereof
CN113999621A (en) * 2021-10-29 2022-02-01 维沃移动通信有限公司 Heat dissipation film and electronic device
CN114106726A (en) * 2021-11-29 2022-03-01 京东方科技集团股份有限公司 Heat dissipation film and electronic device with same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102555314A (en) * 2011-12-30 2012-07-11 深圳市爱诺菲科技有限公司 SMD (surface mounted device) with cooling and electromagnetic wave absorption functions and preparation method and application thereof
CN104416969A (en) * 2013-08-27 2015-03-18 金虹姬 Composite graphite cooling fin
CN210381721U (en) * 2019-06-18 2020-04-21 东莞市兴瑞新能源有限公司 Be applied to heat dissipation sheet of mobile phone motherboard
CN212199105U (en) * 2020-04-27 2020-12-22 苏州佳值电子工业有限公司 Graphite heat dissipation film with multifunctional layer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102555314A (en) * 2011-12-30 2012-07-11 深圳市爱诺菲科技有限公司 SMD (surface mounted device) with cooling and electromagnetic wave absorption functions and preparation method and application thereof
CN104416969A (en) * 2013-08-27 2015-03-18 金虹姬 Composite graphite cooling fin
CN210381721U (en) * 2019-06-18 2020-04-21 东莞市兴瑞新能源有限公司 Be applied to heat dissipation sheet of mobile phone motherboard
CN212199105U (en) * 2020-04-27 2020-12-22 苏州佳值电子工业有限公司 Graphite heat dissipation film with multifunctional layer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112795328A (en) * 2021-01-21 2021-05-14 苏州佳值电子工业有限公司 High-heat-dissipation film with laminated structure and preparation method thereof
CN113999621A (en) * 2021-10-29 2022-02-01 维沃移动通信有限公司 Heat dissipation film and electronic device
WO2023072119A1 (en) * 2021-10-29 2023-05-04 维沃移动通信有限公司 Heat dissipation film and electronic device
CN114106726A (en) * 2021-11-29 2022-03-01 京东方科技集团股份有限公司 Heat dissipation film and electronic device with same

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