US20100243230A1 - Heat-dissipating device including a plating metal layer - Google Patents

Heat-dissipating device including a plating metal layer Download PDF

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Publication number
US20100243230A1
US20100243230A1 US12/541,677 US54167709A US2010243230A1 US 20100243230 A1 US20100243230 A1 US 20100243230A1 US 54167709 A US54167709 A US 54167709A US 2010243230 A1 US2010243230 A1 US 2010243230A1
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US
United States
Prior art keywords
heat
dissipating device
metal layer
plating metal
planar body
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
Application number
US12/541,677
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English (en)
Inventor
Ko-Chun Chen
Chiu-Lang Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wah Hong Industrial Corp
Original Assignee
Wah Hong Industrial Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wah Hong Industrial Corp filed Critical Wah Hong Industrial Corp
Assigned to WAH HONG INDUSTRIAL CORP. reassignment WAH HONG INDUSTRIAL CORP. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHEN, KO-CHUN, Lin, Chiu-Lang
Publication of US20100243230A1 publication Critical patent/US20100243230A1/en
Priority to US13/108,983 priority Critical patent/US8955580B2/en
Priority to US13/366,353 priority patent/US9097468B2/en
Abandoned legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • 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
    • H01L23/367—Cooling facilitated by shape of device
    • H01L23/3672—Foil-like cooling fins or heat sinks
    • 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
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49366—Sheet joined to sheet

Definitions

  • This invention relates to a heat-dissipating device, more particularly to a heat-dissipating device including a plating metal layer formed on a graphite laminate.
  • a heat-dissipating device made from metal having a high conductivity, such as copper or aluminum, is usually used for dissipating heat generated in electronic components into ambient air.
  • a rate of heat generation is increased. Therefore, a large heat-dissipating area of the heat-dissipating device is required so as to quickly dissipate heat.
  • such requirement increases a weight of the heat-dissipating device.
  • graphite Compared to copper or aluminum, graphite has advantages such as low heat resistance, light weight, and high conductive coefficient. However, since graphite has insufficient rigidity and is frangible, graphite is likely to be damaged and to be deformed due to impact or stress during use. In addition, since graphite cannot bond directly to metal or alloy by welding, graphite itself is not used as the heat-dissipating device.
  • An existing method of making a heat-dissipating device is generally carried out by adhering a metal layer to graphite for improving rigidity and strength thereof. Subsequently, electronic components are connected to the graphite by adhering to the metal layer.
  • the metal layer is likely to separate from the graphite, and heat conduction can be discontinuous due to the adhesive between the metal layer and the graphite, which reduces heat conduction efficiency.
  • an object of the present invention is to provide a heat-dissipating device that can overcome the aforesaid drawbacks associated with the prior art.
  • Another object of this invention is to provide a method of making the heat-dissipating device.
  • a heat-dissipating device comprises: a planar body made of a graphite laminate and extending along an x-y plane of the graphite laminate; and a plating metal layer formed on the planar body.
  • a method of making the heat-dissipating device comprises: (a) cleaning a planar body that is made of a graphite laminate and that extends along an x-y plane of the graphite laminate; and (b) electroplating the planar body so that a plating metal layer is formed on the planar body.
  • FIG. 1 is a perspective view of the first preferred embodiment of a heat-dissipating device according to this invention
  • FIG. 2 is a flowchart illustrating the first preferred embodiment of a method for making the heat-dissipating device according to this invention
  • FIG. 3 is a perspective view of the second preferred embodiment of the heat-dissipating device according to this invention.
  • FIG. 4 is a perspective view of the third preferred embodiment of the heat-dissipating device according to this invention.
  • FIG. 5 is a perspective view of the fourth preferred embodiment of the heat-dissipating device according to this invention.
  • FIG. 6 is a perspective view of the fifth preferred embodiment of the heat-dissipating device according to this invention.
  • FIG. 7 is a perspective view of the sixth preferred embodiment of the heat-dissipating device according to this invention.
  • the first preferred embodiment of a heat-dissipating device 2 includes a planar body 21 and a plating metal layer 22 .
  • the planar body 21 is made of a graphite laminate and extends along an x-y plane of the graphite laminate.
  • metal such as copper or aluminum
  • graphite has low heat resistance, light weight, and high conductive coefficient.
  • graphite has excellent conduction of heat in the x-y plane and insulation against heat in the direction (Z) perpendicular to the x-y plane.
  • the plating metal layer 22 is formed on the planar body 21 through electroplating.
  • an electronic component 100 depending on actual requirements, can be mounted on the plating metal layer 22 of the heat-dissipating device 2 through welding or adhesion. Since electroplating is to form a dense metal film through film nucleation and growth, when the plating metal layer 22 is electroplated on the planar body 21 , the plating metal layer 22 can be tightly attached to the planar body 21 , thereby conducting heat generated from the electronic component 100 to ambient air along the x-y plane of the graphite laminate of the planar body 21 .
  • the planar body 21 has top and bottom surfaces 210 , 211 which extend parallel to the x-y plane, and a pair of opposite first lateral sides 212 (only one is shown) and opposite second lateral sides 213 (only one is shown), which interconnect the top and bottom surfaces 210 , 211 .
  • the plating metal layer 22 is formed on the top surface 210 and the opposite first lateral sides 212 .
  • the plating metal layer 22 is selected from the group consisting of copper, nickel, chromium, gold, silver, tin, platinum, and combinations thereof, which have high heat conductivity. Due to high heat conductivity, heat dissipation efficiency is not reduced by forming the plating metal layer 22 on the planar body 21 , but is actually increased.
  • the heat-dissipating device 2 can increase the heat dissipation efficiency up to 10%-15% compared to a heat-dissipating device including merely graphite laminate.
  • the planar body 21 is provided with increased surface hardness and rigidity.
  • a method of making the heat-dissipating device 2 includes steps 11 and 12 .
  • step 11 the planar body 21 is cleaned so as to remove oil contaminant and oxide thereon.
  • the cleaning is conducted by using acid solution.
  • the cleaning can be conducted by using atmospheric pressure plasma.
  • the planar body 21 is immersed for 50 sec in a solution including sulfuric acid having a concentration of not less than 0.5 wt %, such as a concentration of 10 wt %, and a surfactant so as to remove contaminant on the surface of the planar body 21 .
  • the planar body 21 is immersed in sulfuric acid having a concentration of 3-5 wt % for 30 sec so as to enhance effect on removal of oil contaminant and oxide.
  • step 12 the planar body 21 is electroplated so that the plating metal layer 22 is formed on the planar body 21 so as to obtain the heat-dissipating device 2 .
  • the plating metal layer 22 preferably has a layer thickness not less than 1 ⁇ m.
  • the second preferred embodiment of the present invention differs from the first preferred embodiment in that the plating metal layer 22 is further formed on the bottom surface 211 , which can prevent graphite dust from contaminating other components and improve the heat dissipation efficiency of the heat-dissipating device 2 .
  • the electronic component 100 can be disposed on any surface of the planar body 21 .
  • the third preferred embodiment of the present invention differs from the second preferred embodiment in that the plating metal layer 22 includes a plurality of different metal or alloy films.
  • the plating metal layer 22 includes two metal films wherein a copper film 221 having a thickness ranging from 8 ⁇ m to 10 ⁇ m is formed on the planar body 21 , and a nickel film 222 having a thickness ranging from 2 ⁇ m to 5 ⁇ m is formed on the copper film 221 .
  • the total thickness of the plating metal layer 22 is not less than 1 ⁇ m for preventing the plating metal layer 22 from separating from the planar body 21 and for avoiding insufficiency of structural strength.
  • the fourth preferred embodiment of the present invention differs from the second preferred embodiment in that the heat-dissipating device 2 further includes a heat conductive adhesive 25 disposed between the electronic component 100 and the heat-dissipating device 2 so as to assist in heat removal.
  • the fifth preferred embodiment of the present invention differs from the fourth preferred embodiment in that the heat-dissipation device 2 further includes an insulation film 23 attached to the plating metal layer 22 for electrical insulation between the electronic component 100 and the heat-dissipation device 2 .
  • the insulation film 23 is made from polyethylene terephthalate (PET), and the electronic component 100 which needs to be electrically insulated is mounted on the insulation film 23 through the heat conductive adhesive 25 .
  • the sixth preferred embodiment of the present invention includes a metal panel 24 and a plurality of the planar bodies 21 .
  • Each of the planar bodies 21 is formed with the plating metal layer 22 .
  • the metal panel 24 has a first surface 241 adapted to support and contact the electronic component 100 and an opposite second surface 242 provided with a plurality of parallel elongated grooves 243 .
  • the planar bodies 21 are substantially perpendicular to the second surface 242 .
  • One of the first lateral sides 212 of each planar body 21 is inserted into a respective one of the elongated grooves 243 .
  • a portion of the plating metal layer 22 covering the inserted first lateral side 212 of each planar body 21 is secured to the metal panel 24 by welding or adhesive bonding. In use, the heat generated by the electronic component 100 is transferred to the metal panel 24 and is dissipated through the planar bodies 21 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Materials Engineering (AREA)
  • Power Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Thermal Sciences (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
US12/541,677 2009-03-25 2009-08-14 Heat-dissipating device including a plating metal layer Abandoned US20100243230A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/108,983 US8955580B2 (en) 2009-08-14 2011-05-16 Use of a graphite heat-dissipation device including a plating metal layer
US13/366,353 US9097468B2 (en) 2009-03-25 2012-02-05 Use of a graphite heat-dissipation device including a plating metal layer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW098109727 2009-03-25
TW098109727A TW201035513A (en) 2009-03-25 2009-03-25 Method for manufacturing heat dissipation interface device and product thereof

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/108,983 Continuation-In-Part US8955580B2 (en) 2009-03-25 2011-05-16 Use of a graphite heat-dissipation device including a plating metal layer

Publications (1)

Publication Number Publication Date
US20100243230A1 true US20100243230A1 (en) 2010-09-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
US12/541,677 Abandoned US20100243230A1 (en) 2009-03-25 2009-08-14 Heat-dissipating device including a plating metal layer

Country Status (6)

Country Link
US (1) US20100243230A1 (ko)
EP (1) EP2234152A2 (ko)
JP (2) JP2010232626A (ko)
KR (1) KR101270486B1 (ko)
BR (1) BRPI1000957A2 (ko)
TW (1) TW201035513A (ko)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110214851A1 (en) * 2009-08-14 2011-09-08 Wah Hong Industrial Corp. Use of a graphite heat-dissipation device including a plating metal layer
US20120080171A1 (en) * 2010-09-30 2012-04-05 Fujitsu Limited Heat relay mechanism and heat-dissipating fin unit
US20140069622A1 (en) * 2012-07-09 2014-03-13 Ko-Chun Chen Heat dissipation composite and the use thereof
US9404665B1 (en) * 2010-08-30 2016-08-02 Khart Panels LLC Radiant panel system having increased efficiency
US20220347990A1 (en) * 2021-04-29 2022-11-03 GM Global Technology Operations LLC Flexible sheet of polyethylene terephthalate and heat-activated adhesive, and thermal cooling structure using the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI579987B (zh) * 2015-12-22 2017-04-21 財團法人工業技術研究院 散熱模組
CN113622007A (zh) * 2021-09-08 2021-11-09 苏州市安派精密电子有限公司 一种高柔韧性石墨材质或石墨烯材质散热部件制备方法

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