Vapor chamber

Inactive Publication Date: 2020-02-06
MURATA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a vapor chamber design that improves the transfer of heat from a heating element to the chamber's internal space. This is achieved by including recessed portions on the main external surface of the chamber's casing, which make tight jointing with the jointing material used. This results in a stronger joint, even with a small amount of jointing material. As a result, less jointing material is needed, reducing thermal resistance and facilitating heat transfer. Overall, this design improves the thermal coupling between the heating element and the vapor chamber, allowing for better heat diffusion.

Problems solved by technology

Though graphite sheets or the like have been frequently used as members for measures to dissipate heat in recent years, the amount of heat transported thereby is insufficient and use of various members for measures to dissipate heat have been examined.

Method used

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Embodiment Construction

[0044]Hereinbelow, the present invention will be described in more detail with reference to the drawings.

[0045]FIG. 1 and FIGS. 3 to 8 are sectional views of vapor chambers 1a to 1g of the invention, respectively. As illustrated in FIG. 1 and FIGS. 3 to 8, the vapor chambers each include a casing 2 and pillars 3 that are placed in an internal space in the casing 2 so as to support the casing 2 from inside, and include recessed portions 9 in at least a portion of a main external surface of the casing 2. The vapor chambers each further include a working fluid sealed in the internal space of the casing 2, though the working fluid is not illustrated. Because the vapor chambers each include the recessed portions 9 in at least a portion of the main external surface of the casing 2 an anchor effect is produced between the casing 2 and jointing material 10 that joints the casing 2 and a heating element 11 as illustrated in FIG. 2, so that the casing 2 and the jointing material 10 may be tig...

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Abstract

A vapor chamber that includes a casing, a pillar in an internal space of the casing and that supports the casing from an inside thereof, a working fluid in the internal space of the casing, and recessed portions in at least a portion of a main external surface of the casing.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]The present application is a continuation of International application No. PCT / JP2017 / 017042, filed Apr. 28, 2017, the entire contents of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a vapor chamber.BACKGROUND OF THE INVENTION[0003]In recent years, higher integration and higher performance of elements have caused an increase in heat generation. In addition, advances in miniaturization of products have caused increases in heat generation density and therefore the importance of measures for heat radiation have been increasing. This situation is particularly noticeable in the field of mobile terminals such as smartphones and tablets. Though graphite sheets or the like have been frequently used as members for measures to dissipate heat in recent years, the amount of heat transported thereby is insufficient and use of various members for measures to dissipate heat have been examined. In...

Claims

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Application Information

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IPC IPC(8): H05K7/20F28D15/04
CPCF28D15/046H05K7/20336H01L23/427F28D15/0233F28F2225/00
InventorWAKAOKA, TAKUOKUME, NORIKAZUIKEDA, HARUHIKONAKAO, OSAMUNUMOTO, TATSUHIRO
OwnerMURATA MFG CO LTD