US20140370222A1 - Heat-dissipation sheet assembly manufactured by using electrochemical method - Google Patents
Heat-dissipation sheet assembly manufactured by using electrochemical method Download PDFInfo
- Publication number
- US20140370222A1 US20140370222A1 US13/952,622 US201313952622A US2014370222A1 US 20140370222 A1 US20140370222 A1 US 20140370222A1 US 201313952622 A US201313952622 A US 201313952622A US 2014370222 A1 US2014370222 A1 US 2014370222A1
- Authority
- US
- United States
- Prior art keywords
- heat
- dissipation sheet
- layer
- sheet assembly
- electrodeposition
- 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.)
- Abandoned
Links
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 108
- 238000002848 electrochemical method Methods 0.000 title description 3
- 238000004070 electrodeposition Methods 0.000 claims abstract description 24
- 239000007864 aqueous solution Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 229910052709 silver Inorganic materials 0.000 claims description 10
- 239000004332 silver Substances 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 7
- 239000010931 gold Substances 0.000 claims description 7
- 229910052737 gold Inorganic materials 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000010409 thin film Substances 0.000 claims description 4
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 claims description 3
- 229910021383 artificial graphite Inorganic materials 0.000 claims description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004327 boric acid Substances 0.000 claims description 3
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 claims description 3
- 229910021382 natural graphite Inorganic materials 0.000 claims description 3
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 claims description 3
- KERTUBUCQCSNJU-UHFFFAOYSA-L nickel(2+);disulfamate Chemical compound [Ni+2].NS([O-])(=O)=O.NS([O-])(=O)=O KERTUBUCQCSNJU-UHFFFAOYSA-L 0.000 claims description 3
- 150000007524 organic acids Chemical class 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 89
- 230000000712 assembly Effects 0.000 description 9
- 238000000429 assembly Methods 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003252 repetitive effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229920006266 Vinyl film Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000002659 electrodeposit Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/02—Constructions of heat-exchange apparatus characterised by the selection of particular materials of carbon, e.g. graphite
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/089—Coatings, claddings or bonding layers made from metals or metal alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3735—Laminates or multilayers, e.g. direct bond copper ceramic substrates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3736—Metallic materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12736—Al-base component
- Y10T428/1275—Next to Group VIII or IB metal-base component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12882—Cu-base component alternative to Ag-, Au-, or Ni-base component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/14—Layer or component removable to expose adhesive
- Y10T428/1438—Metal containing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/14—Layer or component removable to expose adhesive
- Y10T428/1438—Metal containing
- Y10T428/1443—Aluminum
Definitions
- the present invention relates to a heat-dissipation sheet assembly and more particularly, to a heat-dissipation sheet assembly manufactured by using an electrochemical method.
- heat-dissipation sheets are widely used.
- PDP plasma display panels
- LCD liquid crystal displays
- LED light-emitting diodes
- a conventional heat-dissipation sheet assembly 90 includes a heat-dissipation sheet layer 91 , such as graphite sheets having good heat conductivity, and heat-dissipation sheet protection layers 92 , 92 ′ made of plastic resin to protect the heat-dissipation sheet layer 91 , which are bonded on and under the heat-dissipation sheet layer 91 by using an adhesive 94 .
- an outer protection layer 93 may be bonded on the upper heat-dissipation sheet protection layer 92 using the adhesive 94 , to protect the upper heat-dissipation sheet protection layer 92 from an external impact or abrasion.
- An adhesion layer 95 is applied under the lower heat-dissipation sheet protection layer 92 ′ to attach the heat-dissipation sheet assembly 90 to a heat-generating unit 1 .
- the heat-dissipation sheet layer 91 , the heat-dissipation sheet layer protection layers 92 , 92 ′ and the outer protection layer 93 may separate from one another.
- the heat-dissipation sheet assembly 90 is inadvertently pulled or intentionally removed from the heat-generating unit 1 for repairing/checking a device or equipment, the heat-dissipation sheet layer 91 may be peeled off or damaged.
- the adhesives 94 and the heat-dissipation sheet protection layers 92 , 92 ′ have a heat insulation effect preventing heat transfer, the effect of dissipating and dispersing the heat generated from the heat-generating unit 1 is hindered.
- a heat-dissipation sheet assembly comprising: a heat-dissipation sheet layer having good heat conductivity, a protection layer which is electrodeposited on one or both sides of the heat-dissipation sheet layer.
- the protection layer is electrodeposited on one or both sides of the heat-dissipation sheet layer by immersing the heat-dissipation sheet layer into an aqueous solution for electrodeposition with an added material for electrodeposition and permitting electric current to flow in the aqueous solution for electrodeposition.
- the heat-dissipation sheet assembly may be attached to a heat-generating unit by applying an adhesion layer to an underside of the heat-dissipation sheet assembly.
- the heat-dissipation sheet layer may be preprocessed by immersing the heat-dissipation sheet layer into an aqueous solution containing a copper component before immersing the heat-dissipation sheet layer into the aqueous solution for electrodeposition, for better electrodeposition.
- the heat-dissipation sheet layer may be a thin film made of a natural graphite, artificial graphite, copper, silver, aluminum or gold sheet.
- the material for electrodeposition may be gold, silver, copper, aluminium or nickel.
- the aqueous solution for electrodeposition may be a solution with added sodium cyanide or organic acid silver, or a solution with added nickel sulfamate, nickel chloride and boric acid.
- the thickness of the heat-dissipation sheet layer may be 10 ⁇ 40 ⁇ m and the thickness of the protection layer may be 0.1 ⁇ 3 ⁇ m.
- the heat-dissipation sheet assembly may further comprise an adhesion layer to attach the heat-dissipation sheet assembly to the heat-generating unit; and a release paper on an underside of the adhesion layer.
- the release paper can be easily detached from the adhesion layer.
- FIG. 1 is a schematic cross-sectional view of a conventional heat-dissipation sheet assembly
- FIG. 2 is a schematic cross-sectional view of a heat-dissipation sheet assembly according to one embodiment of the present invention.
- FIG. 3 is a schematic cross-sectional view of a heat-dissipation sheet assembly according to another embodiment of the present invention.
- FIGS. 2 and 3 are schematic cross-sectional views of heat-dissipation sheet assemblies 10 , 10 ′ according to the present invention.
- FIG. 2 is a cross-sectional view of the heat-dissipation sheet assembly 10 according to one embodiment of the present invention, wherein a protection layer 12 is electrodeposited on only one side of a heat-dissipation sheet 11 .
- FIG. 3 is a cross-sectional view of the heat-dissipation sheet assembly 10 ′ according to another embodiment of the present invention, wherein protection layers 12 , 12 ′ are electrodeposited on and under a heat-dissipation sheet layer 11 .
- the heat-dissipation sheet assemblies 10 , 10 ′ comprise the heat-dissipation sheet layer 11 having good heat conductivity and the protection layers 12 , 12 ′ to protect the heat-dissipation sheet layer 11 .
- the heat-dissipation sheet layer 11 is a thin film made of a natural graphite sheet or an artificial graphite sheet having high heat conductivity, or a metal sheet having good heat conductivity, such as copper, silver, aluminium or gold.
- the thickness of the heat-dissipation sheet layer 11 may be about 10 ⁇ 60 ⁇ m, preferably about 10 ⁇ 40 ⁇ m.
- the protection layers 12 , 12 ′ are made of metal materials such as gold, silver, copper, aluminium or nickel.
- the protection layers 12 , 12 ′ protect the heat-dissipation sheet layer 11 by preventing it from being damaged or worn away.
- the protection layers 12 , 12 ′ have good heat conductivity, allowing the heat generated from the heat-generating unit 1 to be effectively dissipated and dispersed through the heat-dissipation sheet layer 11 .
- the protection layer 12 may be applied only on the heat-dissipation sheet layer 11 as shown in FIG. 2 , or the protection layers 12 , 12 ′ may be applied on and under the heat-dissipation sheet layer 11 as shown in FIG.
- the protection layers are ultra thin films and the thickness of the each protection layer 12 , 12 ′ may be about 0.1 ⁇ 5 ⁇ m, preferably about 0.1 ⁇ 3 ⁇ m. Therefore, since the heat-dissipation sheet assemblies 10 , 10 ′ according to the present invention are thin plates about 10 ⁇ 70 ⁇ m in the whole thickness, these are readily and effectively used as heat-dissipating means for the light and thin electrical and electronic products.
- the protection layers 12 , 12 ′ are electrodeposited to the one or both sides of the heat-dissipation sheet layer 11 by using an electrochemical method, without using any adhesives.
- the material for electrodeposition such as gold, silver, copper or aluminum
- the heat-dissipation sheet layer 11 is immersed in the aqueous solution for electrodeposition with the added material for electrodeposition.
- the heat-dissipation sheet layer 11 is connected to a cathode and an anode plate is installed nearby one side or both sides of the heat-dissipation sheet layer 11 .
- electric current is allowed to flow.
- the material for electrodeposition dissolved in the aqueous solution for electrodeposition is electrodeposited to one side or both sides of the heat-dissipation sheet layer 11 , to form the protection layers 12 , 12 ′.
- the aqueous solution for electrodeposition may be a solution with added nickel sulfamate, nickel chloride and boric acid. If the heat-dissipation sheet layer is preprocessed by being immersed into an aqueous solution containing a copper component before being immersed into the aqueous solution, the electrodeposition may be better enhanced.
- the heat-dissipation sheet assemblies 10 , 10 ′ completed in the above-described manner may be attached to the heat-generating unit 1 by applying an adhesion layer 13 to the undersides of the heat-dissipation sheet assemblies 10 , 10 ′ or to the topside of the heat-generating unit 1 .
- the adhesion layer 13 may be, for example, a silicon or epoxy-based adhesive.
- the protection layers 12 , 12 ′ are electrodeposited to the heat-dissipation sheet layer 11 , the elements of the protection layers 12 , 12 ′ permeate into an inner structure of the heat-dissipation sheet layer 11 and the bonding force further increases. Therefore, even if heat is repetitively generated from the heat-generating unit 1 , the bonding strength between the heat-dissipation sheet layer 11 and the protection layers 12 , 12 ′ does not fall.
- the entire heat-dissipation sheet assemblies 10 , 10 ′ will be separated from the heat-generating unit 1 without the heat-dissipation sheet layer 11 itself being damaged or without the heat-dissipation sheet layer 11 and the protection layers 12 , 12 ′ being separated.
- the heat-dissipation sheet assemblies 12 , 12 ′ may comprise an adhesion layer 13 to attach the heat-dissipation sheet assemblies 12 , 12 ′ to the heat-generating unit 1 , and a release paper to protect this adhesion layer 13 .
- the release paper may be attached to the adhesion layer 13 , and can be easily detached from the adhesion layer 13 .
- a material such as a vinyl film, a polyester film, a paper or a cloth covered with release coating may be used.
- the heat-dissipation sheet assembly has the following effects:
Abstract
There is provided a heat-dissipation sheet assembly comprising a heat-dissipation sheet layer having good heat conductivity and a protection layer(s) electrodeposited on one or both sides of the heat-dissipation sheet layer. When the heat-dissipation sheet layer is immersed in an aqueous solution for electrodeposition added with a material for electrodeposition and electric current is permitted to flow in the aqueous solution, the protection layer(s) is electrodeposited on the one or both sides of the heat-dissipation sheet layer. The heat-dissipation sheet assembly can be attached to a heat-generating unit by applying an adhesion layer to an underside of the heat-dissipation sheet assembly.
Description
- This application claims the benefit of Korean Patent Application No. 10-2013-0069480, filed on Jun. 18, 2013, the disclosure of which is hereby incorporated herein by reference in its entirety.
- 1. Field of the Invention
- The present invention relates to a heat-dissipation sheet assembly and more particularly, to a heat-dissipation sheet assembly manufactured by using an electrochemical method.
- 2. Description of the Related Art
- Recently, the structural complexity and preciseness have more and more increased in various electrical and electronic equipment including televisions, computers, medical devices, office equipment, communication equipment, etc. As the electrical and electronic components which are used in these devices and equipment have become smaller in size and the quantity thereof has increased, the heat generated in these components has increased. To efficiently release and disperse the heat generated, heat-dissipation sheets are widely used. Especially, as slim notebooks, tablet PCs, smart phones, plasma display panels (PDP), liquid crystal displays (LCD) and light-emitting diodes (LED) are now made smaller in size and lighter in weight, heat-dissipation sheets are widely used in the devices in which a lot of heat is generated.
- However, as shown in
FIG. 1 , a conventional heat-dissipation sheet assembly 90 includes a heat-dissipation sheet layer 91, such as graphite sheets having good heat conductivity, and heat-dissipationsheet protection layers dissipation sheet layer 91, which are bonded on and under the heat-dissipation sheet layer 91 by using an adhesive 94. Further, anouter protection layer 93 may be bonded on the upper heat-dissipationsheet protection layer 92 using theadhesive 94, to protect the upper heat-dissipationsheet protection layer 92 from an external impact or abrasion. Anadhesion layer 95 is applied under the lower heat-dissipationsheet protection layer 92′ to attach the heat-dissipation sheet assembly 90 to a heat-generating unit 1. In this conventional art, since the adhesive strength of theadhesive 94 decreases due to the repetitive heat generation from the heat-generatingunit 1, the heat-dissipation sheet layer 91, the heat-dissipation sheetlayer protection layers outer protection layer 93 may separate from one another. Furthermore, if the heat-dissipation sheet assembly 90 is inadvertently pulled or intentionally removed from the heat-generatingunit 1 for repairing/checking a device or equipment, the heat-dissipation sheet layer 91 may be peeled off or damaged. In addition, since theadhesives 94 and the heat-dissipationsheet protection layers unit 1 is hindered. - Therefore, it is an object of the present invention to provide a heat-dissipation sheet assembly wherein a heat-dissipation sheet layer is prevented from being damaged even if an external force is applied to the heat-dissipation sheet assembly and no separation occurs between each layer even by the repetitive heat generation.
- It is another object of the present invention to provide a heat-dissipation sheet assembly which is easily manufactured by a simple structure and has excellent effects of heat dissipation and dispersion.
- In accordance with an aspect of the present invention, there is provided a heat-dissipation sheet assembly comprising: a heat-dissipation sheet layer having good heat conductivity, a protection layer which is electrodeposited on one or both sides of the heat-dissipation sheet layer. The protection layer is electrodeposited on one or both sides of the heat-dissipation sheet layer by immersing the heat-dissipation sheet layer into an aqueous solution for electrodeposition with an added material for electrodeposition and permitting electric current to flow in the aqueous solution for electrodeposition.
- The heat-dissipation sheet assembly may be attached to a heat-generating unit by applying an adhesion layer to an underside of the heat-dissipation sheet assembly.
- Preferably, the heat-dissipation sheet layer may be preprocessed by immersing the heat-dissipation sheet layer into an aqueous solution containing a copper component before immersing the heat-dissipation sheet layer into the aqueous solution for electrodeposition, for better electrodeposition.
- Preferably, the heat-dissipation sheet layer may be a thin film made of a natural graphite, artificial graphite, copper, silver, aluminum or gold sheet. The material for electrodeposition may be gold, silver, copper, aluminium or nickel.
- Preferably, the aqueous solution for electrodeposition may be a solution with added sodium cyanide or organic acid silver, or a solution with added nickel sulfamate, nickel chloride and boric acid.
- Preferably, the thickness of the heat-dissipation sheet layer may be 10˜40 μm and the thickness of the protection layer may be 0.1˜3 μm.
- Preferably, the heat-dissipation sheet assembly may further comprise an adhesion layer to attach the heat-dissipation sheet assembly to the heat-generating unit; and a release paper on an underside of the adhesion layer. The release paper can be easily detached from the adhesion layer.
- The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail the preferred embodiments thereof with reference to the attached drawings in which:
-
FIG. 1 is a schematic cross-sectional view of a conventional heat-dissipation sheet assembly; -
FIG. 2 is a schematic cross-sectional view of a heat-dissipation sheet assembly according to one embodiment of the present invention; and -
FIG. 3 is a schematic cross-sectional view of a heat-dissipation sheet assembly according to another embodiment of the present invention. -
-
1: heat- generating unit 10, 10′: heat-dissipation sheet assembly 11: heat- dissipation sheet layer 12, 12′: protection layer 13: adhesion layer 90: heat-dissipation sheet assembly 91: heat- dissipation sheet layer 92, 92′: protection layer 93: outer protection layer 94: adhesive layer 95: adhesion layer - The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which the preferred embodiments of the invention are shown so that those of ordinary skill in the art can easily carry out the present invention.
-
FIGS. 2 and 3 are schematic cross-sectional views of heat-dissipation sheet assemblies 10, 10′ according to the present invention.FIG. 2 is a cross-sectional view of the heat-dissipation sheet assembly 10 according to one embodiment of the present invention, wherein aprotection layer 12 is electrodeposited on only one side of a heat-dissipation sheet 11.FIG. 3 is a cross-sectional view of the heat-dissipation sheet assembly 10′ according to another embodiment of the present invention, whereinprotection layers dissipation sheet layer 11. - As shown in
FIGS. 2 and 3 , the heat-dissipation sheet assemblies dissipation sheet layer 11 having good heat conductivity and theprotection layers dissipation sheet layer 11. The heat-dissipation sheet layer 11 is a thin film made of a natural graphite sheet or an artificial graphite sheet having high heat conductivity, or a metal sheet having good heat conductivity, such as copper, silver, aluminium or gold. The thickness of the heat-dissipation sheet layer 11 may be about 10˜60 μm, preferably about 10˜40 μm. Theprotection layers protection layers dissipation sheet layer 11 by preventing it from being damaged or worn away. In addition, theprotection layers unit 1 to be effectively dissipated and dispersed through the heat-dissipation sheet layer 11. Theprotection layer 12 may be applied only on the heat-dissipation sheet layer 11 as shown inFIG. 2 , or theprotection layers dissipation sheet layer 11 as shown inFIG. 3 to further increase the capability of protecting the heat-dissipation sheet layer 11. The protection layers are ultra thin films and the thickness of the eachprotection layer - An important point is that the
protection layers dissipation sheet layer 11 by using an electrochemical method, without using any adhesives. As a method to electrodeposit theprotection layers dissipation sheet layer 11, the material for electrodeposition, such as gold, silver, copper or aluminum, is added, in an adequate ratio, into an aqueous solution for electrodeposition, for example, an aqueous solution with added sodium cyanide or organic acid silver, and then the heat-dissipation sheet layer 11 is immersed in the aqueous solution for electrodeposition with the added material for electrodeposition. Thereafter, when the heat-dissipation sheet layer 11 is connected to a cathode and an anode plate is installed nearby one side or both sides of the heat-dissipation sheet layer 11, electric current is allowed to flow. Then, the material for electrodeposition dissolved in the aqueous solution for electrodeposition is electrodeposited to one side or both sides of the heat-dissipation sheet layer 11, to form theprotection layers - As shown in
FIGS. 2 and 3 , the heat-dissipation sheet assemblies unit 1 by applying anadhesion layer 13 to the undersides of the heat-dissipation sheet assemblies unit 1. Theadhesion layer 13 may be, for example, a silicon or epoxy-based adhesive. - As described above, when the
protection layers dissipation sheet layer 11, the elements of theprotection layers dissipation sheet layer 11 and the bonding force further increases. Therefore, even if heat is repetitively generated from the heat-generatingunit 1, the bonding strength between the heat-dissipation sheet layer 11 and theprotection layers unit 1 for checking or repairing the heat-generatingunit 1, the entire heat-dissipation sheet assemblies unit 1 without the heat-dissipation sheet layer 11 itself being damaged or without the heat-dissipation sheet layer 11 and theprotection layers - The heat-dissipation sheet assemblies 12, 12′ according to the present invention may comprise an
adhesion layer 13 to attach the heat-dissipation sheet assemblies unit 1, and a release paper to protect thisadhesion layer 13. The release paper may be attached to theadhesion layer 13, and can be easily detached from theadhesion layer 13. For the release paper, a material, such as a vinyl film, a polyester film, a paper or a cloth covered with release coating may be used. - In accordance with the present invention, the heat-dissipation sheet assembly has the following effects:
-
- Even if an external force is applied to the heat-dissipation sheet assembly attached to the heat-generating unit, the heat-dissipation sheet layer and the heat-dissipation sheet assembly are prevented from being damaged.
- Even if heat is repetitively generated from the heat-generating unit, separation between the layers of the heat-dissipation sheet assembly is prevented.
- Since the structure of the heat-dissipation sheet assembly is simple, it is easily manufactured.
- Since there are no layers to hinder the effects of dissipating and dispersing the heat, the effects of dissipating and dispersing the heat is more improved.
- The invention has been described using preferred exemplary embodiments. However, it is to be understood that the scope of the invention is not limited to the disclosed embodiments. On the contrary, the scope of the invention is intended to include various modifications and alternative arrangements within the capabilities of persons skilled in the art using presently known or future technologies and equivalents. The scope of the claims, therefore, should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
Claims (7)
1. A heat-dissipation sheet assembly comprising:
a heat-dissipation sheet layer having good heat conductivity; and
a protection layer(s) electrodeposited on one or both sides of the heat-dissipation sheet layer by immersing the heat-dissipation sheet layer into an aqueous solution for electrodeposition with an added material for electrodeposition and permitting electric current to flow in the aqueous solution,
and the heat-dissipation sheet assembly may be attached to a heat-generating unit by applying an adhesion layer to an underside of the heat-dissipation sheet assembly.
2. The heat-dissipation sheet assembly according to claim 1 , wherein the heat-dissipation sheet layer is preprocessed by immersing into an aqueous solution containing a copper component before immersing into the aqueous solution for electrodeposition, for better electrodeposition.
3. The heat-dissipation sheet assembly according to claim 1 , wherein the heat-dissipation sheet layer is a thin film made of a natural graphite, artificial graphite, copper, silver, aluminum or gold sheet.
4. The heat-dissipation sheet assembly according to claim 1 , wherein the material for electrodeposition is gold, silver, copper, aluminium or nickel.
5. The heat-dissipation sheet assembly according to claim 1 , wherein the aqueous solution for electrodeposition is a solution with added sodium cyanide or organic acid silver, or a solution with added nickel sulfamate, nickel chloride and boric acid.
6. The heat-dissipation sheet assembly according to claim 1 , wherein the thickness of the heat-dissipation sheet layer is 10˜40 μm and the thickness of the protection layer is 0.1˜3 μm.
7. The heat-dissipation sheet assembly according to claim 1 further comprising:
an adhesion layer to attach the heat-dissipation sheet assembly to the heat-generating unit; and
a release paper on an underside of the adhesion layer, the release paper being easily detached from the adhesion layer.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20130069480 | 2013-06-18 | ||
KR10-2013-0069480 | 2013-06-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140370222A1 true US20140370222A1 (en) | 2014-12-18 |
Family
ID=49035302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/952,622 Abandoned US20140370222A1 (en) | 2013-06-18 | 2013-07-28 | Heat-dissipation sheet assembly manufactured by using electrochemical method |
Country Status (2)
Country | Link |
---|---|
US (1) | US20140370222A1 (en) |
EP (1) | EP2816592A2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160212890A1 (en) * | 2015-01-15 | 2016-07-21 | Samsung Display Co., Ltd. | Foldable display |
US20160268523A1 (en) * | 2015-03-10 | 2016-09-15 | Samsung Display Co., Ltd. | Display apparatus and portable terminal |
US10985349B2 (en) * | 2018-12-06 | 2021-04-20 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Hot-pressing buffer substrate, display device, hot-pressing process and method for reducing x-line bright line |
US11317538B2 (en) * | 2020-07-30 | 2022-04-26 | Google Llc | Reinforced graphite heat-spreader for a housing surface of an electronic device |
WO2022191626A1 (en) * | 2021-03-09 | 2022-09-15 | 주식회사 아모그린텍 | Insulation sheet for display light source, and insulation light source module, insulation backlight unit, and display device comprising same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020135984A1 (en) * | 2001-01-22 | 2002-09-26 | Greenwood Alfred W. | Clean release, phase change thermal interface |
-
2013
- 2013-07-28 US US13/952,622 patent/US20140370222A1/en not_active Abandoned
- 2013-08-14 EP EP13180329.8A patent/EP2816592A2/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020135984A1 (en) * | 2001-01-22 | 2002-09-26 | Greenwood Alfred W. | Clean release, phase change thermal interface |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9781826B2 (en) * | 2015-01-15 | 2017-10-03 | Samsung Display Co., Ltd. | Foldable display |
US20160212890A1 (en) * | 2015-01-15 | 2016-07-21 | Samsung Display Co., Ltd. | Foldable display |
US20180190916A1 (en) * | 2015-03-10 | 2018-07-05 | Samsung Display Co., Ltd. | Display apparatus |
CN105977274A (en) * | 2015-03-10 | 2016-09-28 | 三星显示有限公司 | Display apparatus and portable terminal |
KR20160110674A (en) * | 2015-03-10 | 2016-09-22 | 삼성디스플레이 주식회사 | Display apparatus and portable terminal |
US9935278B2 (en) * | 2015-03-10 | 2018-04-03 | Samsung Display Co., Ltd. | Display apparatus and portable terminal |
US20160268523A1 (en) * | 2015-03-10 | 2016-09-15 | Samsung Display Co., Ltd. | Display apparatus and portable terminal |
US10276810B2 (en) * | 2015-03-10 | 2019-04-30 | Samsung Display Co., Ltd. | Curved display apparatus with buffer |
KR102274142B1 (en) * | 2015-03-10 | 2021-07-09 | 삼성디스플레이 주식회사 | Display apparatus and portable terminal |
CN105977274B (en) * | 2015-03-10 | 2021-08-03 | 三星显示有限公司 | Display device and portable terminal |
US10985349B2 (en) * | 2018-12-06 | 2021-04-20 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Hot-pressing buffer substrate, display device, hot-pressing process and method for reducing x-line bright line |
US11317538B2 (en) * | 2020-07-30 | 2022-04-26 | Google Llc | Reinforced graphite heat-spreader for a housing surface of an electronic device |
US11785744B2 (en) | 2020-07-30 | 2023-10-10 | Google Llc | Reinforced graphite heat-spreader for a housing surface of an electronic device |
WO2022191626A1 (en) * | 2021-03-09 | 2022-09-15 | 주식회사 아모그린텍 | Insulation sheet for display light source, and insulation light source module, insulation backlight unit, and display device comprising same |
Also Published As
Publication number | Publication date |
---|---|
EP2816592A2 (en) | 2014-12-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20140370222A1 (en) | Heat-dissipation sheet assembly manufactured by using electrochemical method | |
JP6679601B2 (en) | Array substrate, flexible display panel and display device | |
US20160076829A1 (en) | Heat dissipating sheet | |
TWI476572B (en) | Heat radiation tape and manufacturing method thereof | |
US20160359134A1 (en) | Metal encapsulant having good heat dissipation properties, method of manufacturing same, and flexible electronic device encapsulated in said metal encapsulant | |
JP2011228463A (en) | Led light source device and manufacturing method for the same | |
TWI642332B (en) | Flexible printed circuit board and manufacturing method of flexible printed circuit board | |
CN103592796A (en) | Anisotropic heat dissipation in a backlight unit | |
TW200925234A (en) | Compound type and application thereof | |
US11044809B2 (en) | Flexible circuit board, display panel, and display module | |
TW201633638A (en) | Method of manufacturing connector, method for connecting electronic component, and connector | |
JPWO2016042739A1 (en) | Heat dissipation sheet and heat dissipation structure using the same | |
KR101814998B1 (en) | Adhesive tapes and display devices | |
EP2983226A1 (en) | Organic light emitting display device and method for manufacturing the same | |
US20200251677A1 (en) | Heat dissipation film and display panel | |
WO2017043831A1 (en) | Complex sheet for absorbing/extinguishing and shielding electromagnetic waves and highly dissipating heat from electronic device and manufacturing method therefor | |
JP2011210877A (en) | Flexible printed-wiring board, and method of manufacturing the same | |
TW201640631A (en) | COF semiconductor package, and liquid crystal device | |
KR101500482B1 (en) | Multilayer heat sheet | |
JP2017152108A (en) | Substrate for LED element and LED display device | |
WO2011122232A1 (en) | Metal support flexible board, metal support carrier tape for tape automated bonding using same, metal support flexible circuit board for mounting led, and copper foil-laminated metal support flexible circuit board for forming circuit | |
KR20170026715A (en) | Display device | |
KR101204718B1 (en) | Thermal conductive plate member having improved thermal conductivity | |
CN210781887U (en) | Heat conduction structure and electronic device | |
JP5906621B2 (en) | Electronic component manufacturing method and fixing jig |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: A-TECH SOLUTION CO., LTD, KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KIM, JONG SEOP;LEE, KI SUNG;REEL/FRAME:030890/0431 Effective date: 20130726 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |