US20190237383A1 - Heat sink interface for a device - Google Patents
Heat sink interface for a device Download PDFInfo
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- US20190237383A1 US20190237383A1 US15/885,070 US201815885070A US2019237383A1 US 20190237383 A1 US20190237383 A1 US 20190237383A1 US 201815885070 A US201815885070 A US 201815885070A US 2019237383 A1 US2019237383 A1 US 2019237383A1
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- Prior art keywords
- heat sink
- cavity
- substrate
- fluid
- disposed
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Classifications
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- 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
- 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
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20236—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures by immersion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/064—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces the packing combining the sealing function with other functions
-
- 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
- H01L23/3675—Cooling facilitated by shape of device characterised by the shape of the housing
-
- 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
- H01L23/3737—Organic materials with or without a thermoconductive filler
-
- 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
- H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
-
- 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
- H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
-
- 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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0015—Gaskets or seals
Definitions
- This application is generally related to heat sinks for devices and, more specifically, to a liquid heat sink interface for devices.
- One common technique to remove heat from the device includes affixing a heat sink to the device, for example, by thermally bonding the heat sink to the device with a thermal compound, such as a thermal paste or phase change material.
- This thermal bonding between the device and the heat sink can pose challenges.
- One such challenge can be that the thermal compound can be difficult to remove for servicing of the device.
- Another challenge can be the variability in a thermal interface created by the thermal bonding. For example, the performance of the heat sink in removing heat emitted by the device can be affected by a thickness of the thermal bonding material between the device and the heat sink and the contact pressure applied.
- the physical application of the heat sink to the device via thermal bonding can alter the performance of the heat sink in removing heat emitted by the device.
- the heat sink can be disposed on a printed circuit board coupled to multiple integrated circuits, and the heat sink can be thermally bonded to the multiple integrated circuits. Since the integrated circuits can have differing heights relative to the plane of the printed circuit board, the manufacture of the heat sink can include machining steps into the heat sink material that can be utilized to thermally bond the different height integrated circuits. This specialized machining of heat sinks can be time-consuming and expensive as well as lead to introducing thermal interface performance variability based on an accuracy of the machined step heights.
- This application discloses a device disposed on a substrate, and a heat sink disposed on the substrate over the device.
- the heat sink disposed on the substrate forms a cavity to hold a fluid between the heat sink and the device.
- the fluid can absorb heat emitted by the device and transfer at least a portion of the absorbed heat to the heat sink.
- a gasket can be disposed between and in contact with the substrate and the heat sink. The gasket can prevent the fluid from exiting the cavity formed by the heat sink disposed on the substrate.
- the heat sink can have an opening to the cavity, which can be detachably sealed by a plug. The plug can reduce a pressure within the cavity or allow removal of gas bubbles in the fluid held in the cavity. Embodiments will be described in greater detail below.
- FIG. 1 illustrates an example of a system with a multi-height heat sink interface.
- FIGS. 2A and 2B illustrate an example of a system with a liquid heat sink interface.
- FIG. 3 illustrates an example flowchart for assembling a system with a liquid heat sink interface.
- FIG. 1 illustrates an example of electronic system 100 with a multi-height heat sink interface.
- the electronic system 100 can include multiple electronic devices 103 - 105 disposed on a substrate 101 .
- the electronic system 100 may be the portion of an emulation system and/or a prototyping system having programmable logic devices corresponding to the electronic devices 103 - 105 mounted on a printed circuit board corresponding to the substrate 101 , for example, configured to implement functionality described in a logical design for an electronic system to be functionally verified.
- the electronic system 100 can include a heat sink 102 mounted to the substrate 101 over the electronic devices 103 - 105 .
- the heat sink 102 can be affixed to the electronic devices 104 and 105 through thermal bonding with a thermal interface compound 106 .
- the thermal interface compound 106 can be a polymer-based compound with an electrically insulating and thermally conductive filler material.
- the polymer-based compound can be an epoxy-based compound, silicon-based compound, urethane-based compound, acrylate-based compound, or the like.
- the electrically insulating and thermally conductive filler material can include diamond, aluminum nitride, boron nitride, aluminum oxide, or the like.
- the electronic device 103 may not be in contact with the heat sink 102 , and thus have an air gap interface between the electronic device 103 and the heat sink 102 .
- the heat sink 102 may be specially machined to form steps in the heat sink material.
- the thermal interface compound 106 can be applied to the electronic devices 104 and 105 .
- the specially machined steps can couple with the thermal interface compound 106 can be applied to the electronic devices 104 and 105 , which allows the heat sink 102 to become affixed to the electronic devices 104 and 105 .
- the mechanical tolerances of the special machined steps in the heat sink 102 and a range of pressure utilized to mount the heat sink 102 to the substrate 101 can be limited.
- FIGS. 2A and 2B illustrate an example of a system 200 with a liquid heat sink interface.
- the system 200 can include multiple devices 203 - 205 disposed on a substrate 201 .
- the devices 203 - 205 can be electronic devices, such as integrated circuitry, resistors, light emitting diodes (LEDs), transformers, inductor coils, or the like, or mechanical devices, such as motors, industrial machinery, or the like.
- the system 200 may be the portion of an emulation system and/or a prototyping system having programmable logic devices corresponding to the devices 203 - 205 mounted on a printed circuit board corresponding to the substrate 201 , for example, configured to implement functionality described in a logical design for an electronic system to be functionally verified.
- the substrate 201 can be transparent, opaque, or otherwise allow transmission of light from the light emitting diode externally from the system 200 .
- the system 200 can include a heat sink 202 mounted to the substrate 201 over the devices 203 - 205 .
- the system 200 can include a gasket 206 disposed between the heat sink 202 and the substrate 201 after the heat sink 202 has been mounted to the substrate 201 .
- the gasket 206 can be an o-ring, a packing joint, toric joint, or the like, configured to compress and create a seal between the heat sink 202 and the substrate 201 , which, in some embodiments, can be made of an elastomer, rubber, or polymer having viscoelasticity.
- the heat sink 202 as mounted on the substrate 201 can form a cavity between the heat sink 202 , the substrate 201 , and the devices 203 - 205 .
- the heat sink 202 may include one or more openings to allow access to the cavity.
- the cavity between the heat sink 202 , the substrate 201 , and the devices 203 - 205 can hold an inert fluid 207 .
- the inert fluid 207 can be an electrically inert fluid, such as Fluorinert® or the like, which can be an electrically insulating stable fluorocarbon-based fluid.
- the gasket 206 may create a seal between the heat sink 202 and the substrate 201 , which prevent the inert fluid 207 from escaping the cavity at the joint where the heat sink 202 and the substrate 201 meet.
- the system 200 can include a relief plug 208 configured to seal an opening in the heat sink 202 .
- the relief plug 208 also can allow the cavity between the heat sink 202 , the substrate 201 , and the devices 203 - 205 to be filled with the inert fluid 207 through the opening in the heat sink 202 .
- the cavity can be filled with the relief plug 208 removed from the opening in the heat sink 202 , or the relief plug 208 may provide a conduit to allow the inert fluid 207 into the cavity while the relief plug 208 is disposed in the opening of the heat sink 202 .
- the relief plug 208 also can include pressure relief capabilities, for example, to reduce pressure when a temperature in the cavity rises.
- the relief plug 208 can include a valve to allow a volume of the inert fluid 207 to exit the cavity when the pressure in the cavity meets or exceeds a threshold pressure level.
- the relief plug 208 can include an expansion device configured to bellow, deform, or flexibly blister based on a pressure within the cavity.
- the system 200 can include a bleed plug 209 to allow for vacuum filling of the cavity between the heat sink 202 , the substrate 201 , and the devices 203 - 205 with the inert fluid 207 .
- the bleed plug 209 when disposed in the opening of the heat sink 202 , can allow for the removal of air and air bubbles from the cavity through the bleed plug 209 .
- the system 200 can utilize a heat sink configured to be agnostic to the relative heights and sizes of the devices dispose under the heat sink, which may be simpler and/or cheaper to manufacture and utilize in assembly.
- the system 200 also can ensure a consistent thermal contact between the heat sink 202 and the devices 203 - 205 that remain unaffected by mechanical tolerances of the heat sink 202 or attachment pressure utilized while mounting the heat sink 202 to the substrate 201 .
- FIG. 3 illustrates an example flowchart for assembling a system with a liquid heat sink interface.
- a device in a block 301 , can be disposed on a substrate.
- the system may be the portion of an emulation system and/or a prototyping system having programmable logic devices corresponding to the device mounted on a printed circuit board corresponding to the substrate, for example, configured to implement functionality described in a logical design for an electronic system to be functionally verified.
- a gasket can be disposed on the substrate so that the gasket surrounds the device disposed on the substrate.
- the gasket can be an o-ring, a packing joint, toric joint, or the like, which, in some embodiments, can be made of an elastomer, rubber, or polymer having viscoelasticity.
- a heat sink can be mounted to the substrate on the gasket.
- the mounting of the heat sink to the substrate can compress the gasket, which creates a seal between the heat sink and the substrate.
- the heat sink as mounted on the substrate can form a cavity between the heat sink, the substrate, and the device.
- the heat sink may include one or more openings to allow access to the cavity.
- the cavity formed between the heat sink, the substrate, and the device can be filled with an inert fluid through an opening in the heat sink and, in a block 305 , the opening in the heat sink can be sealed.
- the inert fluid can be an electrically inert fluid, such as Fluorinert® or the like, which can be an electrically insulating stable fluorocarbon-based fluid.
- the gasket may create a seal between the heat sink and the substrate, which prevent the inert fluid from escaping the cavity at the joint where the heat sink and the substrate meet.
- the system can include a relief plug configured to seal an opening in the heat sink.
- the relief plug also can allow the cavity to be filled with the inert fluid through the opening in the heat sink.
- the cavity can be filled with the relief plug removed from the opening in the heat sink, or the relief plug may provide a conduit to allow the inert fluid into the cavity while the relief plug is disposed in the opening of the heat sink.
- the relief plug also can include pressure relief capabilities, for example, to reduce pressure when a temperature in the cavity rises.
- the relief plug can include a valve to allow a volume of the inert fluid to exit the cavity when the pressure in the cavity meets or exceeds a threshold pressure level.
- the relief plug can include an expansion device configured to bellow, deform, or flexibly blister based on a pressure within the cavity.
- the system also may include a bleed plug to allow for vacuum filling of the cavity with the inert fluid. The bleed plug, when disposed in the opening of the heat sink, can allow for the removal of air and air bubbles from the cavity through the bleed plug.
Abstract
Description
- This application is generally related to heat sinks for devices and, more specifically, to a liquid heat sink interface for devices.
- Most electronics and mechanical devices emit heat as a by-product of their operations. One common technique to remove heat from the device includes affixing a heat sink to the device, for example, by thermally bonding the heat sink to the device with a thermal compound, such as a thermal paste or phase change material. This thermal bonding between the device and the heat sink, however, can pose challenges. One such challenge can be that the thermal compound can be difficult to remove for servicing of the device. Another challenge can be the variability in a thermal interface created by the thermal bonding. For example, the performance of the heat sink in removing heat emitted by the device can be affected by a thickness of the thermal bonding material between the device and the heat sink and the contact pressure applied. Thus, the physical application of the heat sink to the device via thermal bonding can alter the performance of the heat sink in removing heat emitted by the device. In some instances, the heat sink can be disposed on a printed circuit board coupled to multiple integrated circuits, and the heat sink can be thermally bonded to the multiple integrated circuits. Since the integrated circuits can have differing heights relative to the plane of the printed circuit board, the manufacture of the heat sink can include machining steps into the heat sink material that can be utilized to thermally bond the different height integrated circuits. This specialized machining of heat sinks can be time-consuming and expensive as well as lead to introducing thermal interface performance variability based on an accuracy of the machined step heights.
- This application discloses a device disposed on a substrate, and a heat sink disposed on the substrate over the device. The heat sink disposed on the substrate forms a cavity to hold a fluid between the heat sink and the device. The fluid can absorb heat emitted by the device and transfer at least a portion of the absorbed heat to the heat sink. A gasket can be disposed between and in contact with the substrate and the heat sink. The gasket can prevent the fluid from exiting the cavity formed by the heat sink disposed on the substrate. The heat sink can have an opening to the cavity, which can be detachably sealed by a plug. The plug can reduce a pressure within the cavity or allow removal of gas bubbles in the fluid held in the cavity. Embodiments will be described in greater detail below.
-
FIG. 1 illustrates an example of a system with a multi-height heat sink interface. -
FIGS. 2A and 2B illustrate an example of a system with a liquid heat sink interface. -
FIG. 3 illustrates an example flowchart for assembling a system with a liquid heat sink interface. - Illustrative Electronic System with a Multi-Height Heat Sink Interface
-
FIG. 1 illustrates an example ofelectronic system 100 with a multi-height heat sink interface. Referring toFIG. 1 , theelectronic system 100 can include multiple electronic devices 103-105 disposed on asubstrate 101. In some embodiments, theelectronic system 100 may be the portion of an emulation system and/or a prototyping system having programmable logic devices corresponding to the electronic devices 103-105 mounted on a printed circuit board corresponding to thesubstrate 101, for example, configured to implement functionality described in a logical design for an electronic system to be functionally verified. - The
electronic system 100 can include aheat sink 102 mounted to thesubstrate 101 over the electronic devices 103-105. Theheat sink 102 can be affixed to theelectronic devices thermal interface compound 106. Thethermal interface compound 106 can be a polymer-based compound with an electrically insulating and thermally conductive filler material. In some embodiments, the polymer-based compound can be an epoxy-based compound, silicon-based compound, urethane-based compound, acrylate-based compound, or the like. The electrically insulating and thermally conductive filler material can include diamond, aluminum nitride, boron nitride, aluminum oxide, or the like. In this embodiment, theelectronic device 103 may not be in contact with theheat sink 102, and thus have an air gap interface between theelectronic device 103 and theheat sink 102. - Since the electronic devices 103-105 have different heights and dimensions, the
heat sink 102 may be specially machined to form steps in the heat sink material. During the thermal bonding process, thethermal interface compound 106 can be applied to theelectronic devices heat sink 102 is mounted to thesubstrate 101, the specially machined steps can couple with thethermal interface compound 106 can be applied to theelectronic devices heat sink 102 to become affixed to theelectronic devices heat sink 102 and theelectronic devices thermal interface compound 106, the mechanical tolerances of the special machined steps in theheat sink 102 and a range of pressure utilized to mount theheat sink 102 to thesubstrate 101 can be limited. - Electronic System with a Liquid Heat Sink Interface
-
FIGS. 2A and 2B illustrate an example of asystem 200 with a liquid heat sink interface. Referring toFIGS. 2A and 2B , thesystem 200 can include multiple devices 203-205 disposed on asubstrate 201. The devices 203-205 can be electronic devices, such as integrated circuitry, resistors, light emitting diodes (LEDs), transformers, inductor coils, or the like, or mechanical devices, such as motors, industrial machinery, or the like. In some embodiments, thesystem 200 may be the portion of an emulation system and/or a prototyping system having programmable logic devices corresponding to the devices 203-205 mounted on a printed circuit board corresponding to thesubstrate 201, for example, configured to implement functionality described in a logical design for an electronic system to be functionally verified. When at least one of the devices 203-205 corresponds to a light emitting diode, thesubstrate 201 can be transparent, opaque, or otherwise allow transmission of light from the light emitting diode externally from thesystem 200. - The
system 200 can include aheat sink 202 mounted to thesubstrate 201 over the devices 203-205. In some embodiments, thesystem 200 can include agasket 206 disposed between theheat sink 202 and thesubstrate 201 after theheat sink 202 has been mounted to thesubstrate 201. Thegasket 206 can be an o-ring, a packing joint, toric joint, or the like, configured to compress and create a seal between theheat sink 202 and thesubstrate 201, which, in some embodiments, can be made of an elastomer, rubber, or polymer having viscoelasticity. Theheat sink 202 as mounted on thesubstrate 201 can form a cavity between theheat sink 202, thesubstrate 201, and the devices 203-205. Theheat sink 202 may include one or more openings to allow access to the cavity. - The cavity between the
heat sink 202, thesubstrate 201, and the devices 203-205 can hold aninert fluid 207. Theinert fluid 207 can be an electrically inert fluid, such as Fluorinert® or the like, which can be an electrically insulating stable fluorocarbon-based fluid. Thegasket 206 may create a seal between theheat sink 202 and thesubstrate 201, which prevent theinert fluid 207 from escaping the cavity at the joint where the heat sink 202 and thesubstrate 201 meet. - The
system 200 can include arelief plug 208 configured to seal an opening in theheat sink 202. Therelief plug 208 also can allow the cavity between theheat sink 202, thesubstrate 201, and the devices 203-205 to be filled with theinert fluid 207 through the opening in theheat sink 202. In some embodiments, the cavity can be filled with therelief plug 208 removed from the opening in theheat sink 202, or therelief plug 208 may provide a conduit to allow theinert fluid 207 into the cavity while therelief plug 208 is disposed in the opening of theheat sink 202. Therelief plug 208 also can include pressure relief capabilities, for example, to reduce pressure when a temperature in the cavity rises. Therelief plug 208 can include a valve to allow a volume of theinert fluid 207 to exit the cavity when the pressure in the cavity meets or exceeds a threshold pressure level. In some embodiments, therelief plug 208 can include an expansion device configured to bellow, deform, or flexibly blister based on a pressure within the cavity. - The
system 200 can include ableed plug 209 to allow for vacuum filling of the cavity between theheat sink 202, thesubstrate 201, and the devices 203-205 with theinert fluid 207. Thebleed plug 209, when disposed in the opening of theheat sink 202, can allow for the removal of air and air bubbles from the cavity through thebleed plug 209. - By utilizing the
inert fluid 207 as an interface between theheat sink 202 and the devices 203-205 disposed on thesubstrate 201, thesystem 200 can utilize a heat sink configured to be agnostic to the relative heights and sizes of the devices dispose under the heat sink, which may be simpler and/or cheaper to manufacture and utilize in assembly. Thesystem 200 also can ensure a consistent thermal contact between theheat sink 202 and the devices 203-205 that remain unaffected by mechanical tolerances of theheat sink 202 or attachment pressure utilized while mounting theheat sink 202 to thesubstrate 201. -
FIG. 3 illustrates an example flowchart for assembling a system with a liquid heat sink interface. Referring toFIG. 3 , in ablock 301, a device can be disposed on a substrate. In some embodiments, the system may be the portion of an emulation system and/or a prototyping system having programmable logic devices corresponding to the device mounted on a printed circuit board corresponding to the substrate, for example, configured to implement functionality described in a logical design for an electronic system to be functionally verified. - In a
block 302, a gasket can be disposed on the substrate so that the gasket surrounds the device disposed on the substrate. The gasket can be an o-ring, a packing joint, toric joint, or the like, which, in some embodiments, can be made of an elastomer, rubber, or polymer having viscoelasticity. - In a
block 303, a heat sink can be mounted to the substrate on the gasket. The mounting of the heat sink to the substrate can compress the gasket, which creates a seal between the heat sink and the substrate. The heat sink as mounted on the substrate can form a cavity between the heat sink, the substrate, and the device. The heat sink may include one or more openings to allow access to the cavity. - In a
block 304, the cavity formed between the heat sink, the substrate, and the device can be filled with an inert fluid through an opening in the heat sink and, in ablock 305, the opening in the heat sink can be sealed. The inert fluid can be an electrically inert fluid, such as Fluorinert® or the like, which can be an electrically insulating stable fluorocarbon-based fluid. The gasket may create a seal between the heat sink and the substrate, which prevent the inert fluid from escaping the cavity at the joint where the heat sink and the substrate meet. - In some embodiments, the system can include a relief plug configured to seal an opening in the heat sink. The relief plug also can allow the cavity to be filled with the inert fluid through the opening in the heat sink. In some embodiments, the cavity can be filled with the relief plug removed from the opening in the heat sink, or the relief plug may provide a conduit to allow the inert fluid into the cavity while the relief plug is disposed in the opening of the heat sink.
- The relief plug also can include pressure relief capabilities, for example, to reduce pressure when a temperature in the cavity rises. The relief plug can include a valve to allow a volume of the inert fluid to exit the cavity when the pressure in the cavity meets or exceeds a threshold pressure level. In some embodiments, the relief plug can include an expansion device configured to bellow, deform, or flexibly blister based on a pressure within the cavity. The system also may include a bleed plug to allow for vacuum filling of the cavity with the inert fluid. The bleed plug, when disposed in the opening of the heat sink, can allow for the removal of air and air bubbles from the cavity through the bleed plug.
- While the application describes specific examples of carrying out embodiments, those skilled in the art will appreciate that there are numerous variations and permutations of the above described systems and techniques that fall within the spirit and scope of the invention as set forth in the appended claims.
- One of skill in the art will also recognize that the concepts taught herein can be tailored to a particular application in many other ways. In particular, those skilled in the art will recognize that the illustrated examples are but one of many alternative implementations that will become apparent upon reading this disclosure.
- Although the specification may refer to “an”, “one”, “another”, or “some” example(s) in several locations, this does not necessarily mean that each such reference is to the same example(s), or that the feature only applies to a single example.
Claims (14)
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US15/885,070 US10381287B1 (en) | 2018-01-31 | 2018-01-31 | Heat sink interface for a device |
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Cited By (1)
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US11107747B2 (en) * | 2018-09-19 | 2021-08-31 | Taiwan Semiconductor Manufacturing Co., Ltd. | Semiconductor package with composite thermal interface material structure and method of forming the same |
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US9583415B2 (en) * | 2013-08-02 | 2017-02-28 | Taiwan Semiconductor Manufacturing Company, Ltd. | Packages with thermal interface material on the sidewalls of stacked dies |
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US11107747B2 (en) * | 2018-09-19 | 2021-08-31 | Taiwan Semiconductor Manufacturing Co., Ltd. | Semiconductor package with composite thermal interface material structure and method of forming the same |
US11569147B2 (en) | 2018-09-19 | 2023-01-31 | Taiwan Semiconductor Manufacturing Company, Ltd. | Method of forming semiconductor package with composite thermal interface material structure |
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