US20060005944A1 - Thermoelectric heat dissipation device and method for fabricating the same - Google Patents

Thermoelectric heat dissipation device and method for fabricating the same Download PDF

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Publication number
US20060005944A1
US20060005944A1 US10/883,707 US88370704A US2006005944A1 US 20060005944 A1 US20060005944 A1 US 20060005944A1 US 88370704 A US88370704 A US 88370704A US 2006005944 A1 US2006005944 A1 US 2006005944A1
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United States
Prior art keywords
thermoelectric
heat sink
heat
base plate
heat dissipation
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Abandoned
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US10/883,707
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Jack Wang
Michael Lin
Charles Ma
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Waffer Tech Corp
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Waffer Tech Corp
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Priority to US10/883,707 priority Critical patent/US20060005944A1/en
Assigned to WANG, JACK, WAFFER TECHNOLOGY CORP. reassignment WANG, JACK ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIN, MICHAEL, MA, CHARLES, WANG, JACK
Publication of US20060005944A1 publication Critical patent/US20060005944A1/en
Application status is Abandoned legal-status Critical

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L35/00Thermoelectric devices comprising a junction of dissimilar materials, i.e. exhibiting Seebeck or Peltier effect with or without other thermoelectric effects or thermomagnetic effects; Processes or apparatus peculiar to the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L35/28Thermoelectric devices comprising a junction of dissimilar materials, i.e. exhibiting Seebeck or Peltier effect with or without other thermoelectric effects or thermomagnetic effects; Processes or apparatus peculiar to the manufacture or treatment thereof or of parts thereof; Details thereof operating with Peltier or Seebeck effect only
    • H01L35/32Thermoelectric devices comprising a junction of dissimilar materials, i.e. exhibiting Seebeck or Peltier effect with or without other thermoelectric effects or thermomagnetic effects; Processes or apparatus peculiar to the manufacture or treatment thereof or of parts thereof; Details thereof operating with Peltier or Seebeck effect only characterised by the structure or configuration of the cell or thermo-couple forming the device including details about, e.g., housing, insulation, geometry, module

Abstract

A method for fabricating a thermoelectric heat dissipation device including the steps of providing a base plate, a thermoelectric semiconductive element connected to the base plate and a heat sink in form of plates or fins with one surface coated an electric insulation coating and patterned conductive lines, and adhering the heat sink to the thermoelectric semiconductive element. Accrodingly, the thermoelectric heat dissipation device is provided including the theremoelectric semiconductive element as a cryogenic chip and the heat sink. The cooling surface of the cryogenic chip is directly electrically connected to the heat sink which is in form of plates or fins, and the other surface of the cryogenic chip is adhered to the base plate. The base plate of the device is utilized to connect with the surface of an electronic component for heat transfer.

Description

    BACKGROUND OF THE INVENTION
  • The present invention is related to a thermoelectric heat dissipation device and a method for fabricating the thermoelectric heat dissipation device. More particularly, the present invention is related to a thermoelectric heat dissipation device including a combination of a cryogenic chip and a heat sink in form of fins or flat plates and a method for fabricating the heat dissipation device.
  • The technology of electronic components is developed very fast, especially, the main component of a computer, central processing unit (CPU). The size of CPU is tended to miniaturize but the performance and the efficiency thereof is progressed. Due to the miniaturization of CPU, the heat generated from the power consumption when the CPU is operating is rapidly accumulated so as to increase the temperature of the CPU. Thus, if the heat is not adequately removed from the CPU, the CPU is overheated to levels that degrade the life and reliability of the computer, or worse to crash the CPU. Thus, heat dissipation of CPU is a significant issue during the operation of computers.
  • One of the heat dissipation devices on the market is utilization of a fan to couple to the enclosure of electronic apparatus. This heat dissipation device is designed to exhaust the hot air from the enclosure of the apparatus in order to replenish it with fresh air. Thus, the heat generated from the operation of the electronic components in the enclosure of an electronic apparatus will be dissipated. However, the efficiency of the heat dissipation of this kind of one-way fan is not satisfied because the environment temperature may not be lower than the interior temperature in the enclosure of an electronic apparatus, such as in summer time, the room temperature is high as 35 centigrade degrees. Thus, utilization of one-way fan for air-convection with high-temperature fresh air is inefficient, because the electronic components are still operated in an environment with high temperature. The efficiency cannot be improved by adding one-way fans to the apparatus.
  • Another one commercial heat dissipater for removing the heat generated from the electronic component is a device combined a base and a heat sink. The heat sink is coupled to the surface of the electronic components via the base for heat transfer. The heat is conducted via the heat sink and then transferred to the environment. A fan can be added to the heat sink to improve the efficiency of the heat transfer of the heat sink.
  • There is another one commercial electric heat dissipation device. As shown in FIG. 1, this kind of commercial heat dissipation device includes a cryogenic chip for heat exchange. A heat conducting surface is integrated with an afore-mentioned heat dissipation device. The heat generated from the electronic components is exchanged by the cryogenic chip to the surface of the heat conduct surface, and then is transferred to the integrated heat dissipation device. The heat thus is dissipated by the heat dissipation device or an additional fan. However, the cryogenic chip of the electronic heat dissipation device is consisted of an upper ceramic plate, a bottom ceramic plate and a P-N semiconductive material electric coupled therebetween. The heat conductivity of the ceramic material is lower than metal or a high heat conductivity material. Besides, because the heat is indirectly transferred from the plate to the heat dissipation device, the efficiency of heat conductivity of the electronic heat dissipation device is unsatisfied.
  • BRIEF SUMMARY OF THE INVENTION
  • The present invention is to provide a method for fabricating a thermoelectric heat dissipation device. The method includes the steps of providing a base plate, a thermoelectric semiconductive element connected to the base plate and a heat sink in form of plates or fins with one surface coated an electric insulation coating and patterned conductive lines, and adhering the heat sink to the thermoelectric semiconductive element. This thermoelectric heat dissipation device conducts the heat dissipation by direct heat transfer.
  • The present invention is further to provide a thermoelectric heat dissipation device. The present device includes a theremoelectric semiconductive element as a cryogenic chip and a heat sink. The cooling surface of the cryogenic chip is directly electrically connected to the heat sink which is in form of plates or fins, and the other surface of the cryogenic chip is adhered to a base plate. The base plate of the device is utilized to connect to the surface an electronic component for heat exchange.
  • Because the heat sink of the thermoelectric heat dissipation device is directly connected to the heat dissipating surface of the thermoelectric semiconductive element for transferring the heat exchanged from the electronic component to the semiconductive element, the efficiency of heat dissipation of the device is enhanced and the cost thereof is lowered compared with the prior thermoelectric device.
  • These and other objectives of the present invention will become obvious to those of ordinary skill in the art after reading the following detailed description of preferred embodiments.
  • It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the invention as claimed.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • These as well as other features of the present invention will become more apparent upon reference to the drawings therein:
  • FIG. 1 is a perspective view of a conventional structure of a cryogenic chip and a heat sink;
  • FIG. 2 is a cross-sectional view of a base plate of the embodiment of the present invention;
  • FIG. 3 is a cross-sectional view of a base plate and a thermoelectric semiconductive element combined according to the embodiment of the present invention;
  • FIG. 4 is a cross-sectional view of a heat sink of the embodiment of the present invention; and
  • FIG. 5 is a cross-sectional view of the assembly of a heat sink and a thermoelectric semiconductive element of the embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE INVENTION
  • Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
  • FIGS. 2 to 5 are shown a preferred embodiment of the present invention to fabricate a thermoelectric heat dissipation device. The process of the present invention includes the step of providing a base plate 1. The upper surface of the base plate 1 is patterned a plurality of conductive lines 41 for connecting with a thermoelectric semiconductive element 2 and providing the electrical connection of multiple P-N posts of semiconductive material 21 and 22, as shown in FIG. 1. The upper surface is utilized to connect the thermoelectric semiconductive element 2.
  • The thermoelectric element 2 is connected to one surface of the base plate 1 by a cooling surface 23 thereof, as shown in FIG. 3. Such that, the patterned conductive lines 41 is further electrically connected to a plurality of sets of P-N posts 21, 22 of the semiconductive element 2.
  • Furthermore, a heat conductive element 3 is provided. The heat conductive element 3 is made of material with high heat conductivity but without electric conductivity. In a preferred embodiment, the heat conductive element 3 can be made of a metal with high heat conductivity. The surface 31 of the heat conductive element 3 for combining with the thermoelectric semiconductive element 2 is coated an inert coating 33, such as an anodic coating. Thus, the coating 31 is heat conductive but is not electric conductive, as shown in FIG. 4. In a prefer embodiment of the present invention, the conductive element 3 includes the surface 31 patterned a plurality of conductive lines 42, as shown in FIG. 4. The conductive lines 42 are utilized to connect to the thermoelectric semiconductive element 2 and to provide the electrical connection between P-N posts 21 and 22 of the semiconductive material.
  • The surface 31 of the heat conductive element 3 with the patterned conductive lines 42 is combined to the top surface 24 of the thermoelectric element 2. The P-N posts of the semiconductive material are electrically connected to the surface 31 via the patterned lines 42, as shown in FIG. 5.
  • According to the above description, a thermoelectric heat dissipation device is fabricated, as shown in FIG. 5. The heat dissipation device includes the thermoelectric semiconductive element 2 as a cryogenic chip and a heat sink 3. The thermoelectric heat dissipation device is connected with an electronic component via base plate 1 thereof. Thus, the heat generated from the electronic components can be exchanged from the base plate 1 to the top of the thermoelectric semiconductive element 2 and then transferred to the heat sink 3 for heat dissipation. Accordingly, the heat can be directly transferred and dissipated to enhance the efficiency of the cryogenic chip. Moreover, in a preferred embodiment, the heat sink 3 can be directly adhered to the top surface 24 of the thermoelectric semiconductive element 2. Comparing with the utilization of conventional cryogenic chip, no heat dissipation plate is needed to combine the heat sink 3 and the semicoductive element 2. Thus, the dissipation device of the present invention is less costly and the fabrication thereof is less complicated.
  • A thermoelectric heat dissipation device fabricated by the above method is described hereinafter. The construction of the thermoelectric heat dissipation device is shown in FIGS. 2 to 5, as a preferred embodiment.
  • FIG. 5 shows a thermoelectric heat dissipation device. The device includes a thermoelectric semicondutive element 2, a base plate 1 for adhering to the semiconductive element 2, and a heat sink 3 connected to the thermoelectric semiconductive element 2. The base plate 1 provides a surface to adhere the thermoelectric semiconductive element 2, as shown in FIG. 2. The base plate 1 is made by the material with heat conductivity but without electric conductivity. In the embodiment shown in FIG. 2, the base late 1 is preferably made of ceramic material. The base plate 1 is molded in a form of a plate. Thus, two surfaces are provided. The upper surface is utilized to be as an adhering surface for connecting the thermoelectric semiconductive element 2 and be patterned a plurality of conductive lines 41 for electrically connecting the P-N posts 21, 22 of the element 2.
  • The thermoelectric semiconductive element 2 includes a plurality of sets of P-N posts 21, 22. The element 2 is so called a cryogenic chip. For heat change, the P-N posts 21, 22 are able to absorb the heat from one end and transfer the heat to the other end under electricity. In a preferred embodiment, the thermoelectric seminconductive element 2 includes a cooling end 23 for adhere to the surface of the base plate 1 and a dissipation end 24.
  • The heat sink 3, in a preferred embodiment, is made from material with high heat conductivity but is electrically insulated. In another embodiment, as shown in FIG. 4, the heat sink is made from metal with high heat conductivity. When the heat sink 3 is made from metal, the surface 31 for adhering to the thermoelectric semiconductive element 2 should be coated an inert coating 33, such as anodic coating, for electric insulation.
  • The heat sink 3 described hereinbefore, as shown in FIG. 4, can be molded as a construction consisting of surface 31 and fins 32. Optionally, the heat sink 3 can further includes an upper plate. The surface 31 of the heat sink 3 is able to adhere with the thermoelectric semiconductive element 2. As shown in FIG. 4, a plurality of electric lines 42 are patterned on the surface 31 for electrically connecting with the P-N posts 21, 22 of the thermoelectric semiconductive element.
  • The thermoelectric heat dissipation device fabricated by the method describe herein is able to enhance the efficiency of heat dissipation when comparing with the combination of cryogenic chip and heat sink of prior art because the heat sink 3 is directly adhered to the heat dissipation surface 24 of the thermoelectric semiconductive element 2 for heat exchange the heat from the surface 24 to heat sink 3.
  • While an illustrative and presently preferred embodiment of the invention has been described in detail herein, it is to be understood that the inventive concepts may be otherwise variously embodied and employed and that the appended claims are intended to be construed to include such variations except insofar as limited by the prior art.

Claims (10)

1. A method for fabricating a thermoelectric heat dissipation device, comprising:
providing a base plate having one surface patterned with a plurality of first conductive lines;
providing a heat sink having one surface patterned with a plurality of second conductive lines; and
adhering a thermoelectric semiconductive element to be sandwiched between the base plate and the heat sink so that a plurality of P-N posts of the thermoelectric semiconductive element are electrically connected with the first and the second conductive lines, respectively.
2. The method as claimed in claim 1, wherein the step of providing the base plate further including providing the base plate made of ceramic material with heat conductivity but electrically insulated.
3. The method as claimed in claim 1, wherein the adhering step further comprising adhering a cooling end of the thermoelectric semiconductive element to the base plate.
4. The method as claimed in claim 1, wherein the adhering step further comprising adhering a heat dissipation end of the thermoelectric semiconductive element to the heat sink.
5. The method as claimed in claim 1, wherein the step of providing the including providing the heat sink made of material with heat conductivity but electrically insulated.
6. The method as claimed in claim 1, wherein the step of providing the heat sink including providing the heat sink made of a metal with high heat conductivity, and the surface of the heat sink utilized to adhere to the thermoelectric semiconductive element is coated with an anodic coating,
7. A thermoelectric heat dissipation device comprising:
a thermoelectric semicondutive element;
a base plate with a plurality of first conductive lines patterned on one surface thereof so as to be adhered to one end of the semiconductive element; and
a heat sink with a plurality of conductive lines patterned on one surface thereof so as to be stacked on the other end of the thermoelectric semiconductive element.
8. The thermoelectric heat dissipation device as claimed in claim 7, wherein the thermoelectric semiconductive element includes a plurality of P-N posts for electrically connecting with the second conductive lines when the heat sink stacked thereon.
9. The thermoelectric heat dissipation device as claimed in claim 7, wherein the heat sink comprises a plate and a plurality of fins.
10. The thermoelectric heat dissipation device as claimed in claim 7, wherein the heat sink is in a form of plate construction with an upper plate and a bottom plate.
US10/883,707 2004-07-06 2004-07-06 Thermoelectric heat dissipation device and method for fabricating the same Abandoned US20060005944A1 (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060181854A1 (en) * 2002-04-23 2006-08-17 Freedman Philip D Patterned structure, method of making and use
US20080047598A1 (en) * 2006-08-03 2008-02-28 Amerigon Inc. Thermoelectric device
US20080230110A1 (en) * 2002-04-23 2008-09-25 Freedman Philip D Thin film photodetector, method and system
US20090025770A1 (en) * 2007-07-23 2009-01-29 John Lofy Segmented thermoelectric device
US20110004082A1 (en) * 2008-07-03 2011-01-06 Jeroen Poeze Multi-stream data collection system for noninvasive measurement of blood constituents
US9186102B2 (en) 2009-09-03 2015-11-17 Cercacor Laboratories, Inc. Emitter driver for noninvasive patient monitor
CN105204597A (en) * 2015-10-24 2015-12-30 唐玉敏 CPU radiator
US9335073B2 (en) 2008-02-01 2016-05-10 Gentherm Incorporated Climate controlled seating assembly with sensors
US9622588B2 (en) 2008-07-18 2017-04-18 Gentherm Incorporated Environmentally-conditioned bed
US9662962B2 (en) 2013-11-05 2017-05-30 Gentherm Incorporated Vehicle headliner assembly for zonal comfort
US9685599B2 (en) 2011-10-07 2017-06-20 Gentherm Incorporated Method and system for controlling an operation of a thermoelectric device
US9857107B2 (en) 2006-10-12 2018-01-02 Gentherm Incorporated Thermoelectric device with internal sensor
US9989267B2 (en) 2012-02-10 2018-06-05 Gentherm Incorporated Moisture abatement in heating operation of climate controlled systems
US10005337B2 (en) 2004-12-20 2018-06-26 Gentherm Incorporated Heating and cooling systems for seating assemblies
US10405667B2 (en) 2007-09-10 2019-09-10 Gentherm Incorporated Climate controlled beds and methods of operating the same

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US4483341A (en) * 1982-12-09 1984-11-20 Atlantic Richfield Company Therapeutic hypothermia instrument
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Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8907323B2 (en) 2002-04-23 2014-12-09 Philip D. Freedman Microprocessor assembly
US20080230110A1 (en) * 2002-04-23 2008-09-25 Freedman Philip D Thin film photodetector, method and system
US20060181854A1 (en) * 2002-04-23 2006-08-17 Freedman Philip D Patterned structure, method of making and use
US7800194B2 (en) 2002-04-23 2010-09-21 Freedman Philip D Thin film photodetector, method and system
US10005337B2 (en) 2004-12-20 2018-06-26 Gentherm Incorporated Heating and cooling systems for seating assemblies
US8222511B2 (en) 2006-08-03 2012-07-17 Gentherm Thermoelectric device
US20080047598A1 (en) * 2006-08-03 2008-02-28 Amerigon Inc. Thermoelectric device
US9857107B2 (en) 2006-10-12 2018-01-02 Gentherm Incorporated Thermoelectric device with internal sensor
US9105809B2 (en) 2007-07-23 2015-08-11 Gentherm Incorporated Segmented thermoelectric device
US20090025770A1 (en) * 2007-07-23 2009-01-29 John Lofy Segmented thermoelectric device
US10405667B2 (en) 2007-09-10 2019-09-10 Gentherm Incorporated Climate controlled beds and methods of operating the same
US9335073B2 (en) 2008-02-01 2016-05-10 Gentherm Incorporated Climate controlled seating assembly with sensors
US9651279B2 (en) 2008-02-01 2017-05-16 Gentherm Incorporated Condensation and humidity sensors for thermoelectric devices
US10228166B2 (en) 2008-02-01 2019-03-12 Gentherm Incorporated Condensation and humidity sensors for thermoelectric devices
US9277880B2 (en) * 2008-07-03 2016-03-08 Masimo Corporation Multi-stream data collection system for noninvasive measurement of blood constituents
US10258266B1 (en) 2008-07-03 2019-04-16 Masimo Corporation Multi-stream data collection system for noninvasive measurement of blood constituents
US10376190B1 (en) 2008-07-03 2019-08-13 Masimo Corporation Multi-stream data collection system for noninvasive measurement of blood constituents
US10258265B1 (en) 2008-07-03 2019-04-16 Masimo Corporation Multi-stream data collection system for noninvasive measurement of blood constituents
US10335068B2 (en) 2008-07-03 2019-07-02 Masimo Corporation Multi-stream data collection system for noninvasive measurement of blood constituents
US20110004082A1 (en) * 2008-07-03 2011-01-06 Jeroen Poeze Multi-stream data collection system for noninvasive measurement of blood constituents
US10376191B1 (en) 2008-07-03 2019-08-13 Masimo Corporation Multi-stream data collection system for noninvasive measurement of blood constituents
US10299708B1 (en) 2008-07-03 2019-05-28 Masimo Corporation Multi-stream data collection system for noninvasive measurement of blood constituents
US10292628B1 (en) 2008-07-03 2019-05-21 Masimo Corporation Multi-stream data collection system for noninvasive measurement of blood constituents
US10226134B2 (en) 2008-07-18 2019-03-12 Gentherm Incorporated Environmentally-conditioned bed
US9622588B2 (en) 2008-07-18 2017-04-18 Gentherm Incorporated Environmentally-conditioned bed
US9668680B2 (en) 2009-09-03 2017-06-06 Masimo Corporation Emitter driver for noninvasive patient monitor
US9186102B2 (en) 2009-09-03 2015-11-17 Cercacor Laboratories, Inc. Emitter driver for noninvasive patient monitor
US10208990B2 (en) 2011-10-07 2019-02-19 Gentherm Incorporated Thermoelectric device controls and methods
US9685599B2 (en) 2011-10-07 2017-06-20 Gentherm Incorporated Method and system for controlling an operation of a thermoelectric device
US9989267B2 (en) 2012-02-10 2018-06-05 Gentherm Incorporated Moisture abatement in heating operation of climate controlled systems
US10495322B2 (en) 2012-02-10 2019-12-03 Gentherm Incorporated Moisture abatement in heating operation of climate controlled systems
US10266031B2 (en) 2013-11-05 2019-04-23 Gentherm Incorporated Vehicle headliner assembly for zonal comfort
US9662962B2 (en) 2013-11-05 2017-05-30 Gentherm Incorporated Vehicle headliner assembly for zonal comfort
CN105204597A (en) * 2015-10-24 2015-12-30 唐玉敏 CPU radiator

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