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Title:
VAPOR CHAMBER, HEAT SINK AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/001199
Kind Code:
A1
Abstract:
Embodiments of the present application provide a vapor chamber, a heat sink, and an electronic device. The vapor chamber comprises: a bottom plate, a top plate, side plates and a backflow piece. The bottom plate comprises a first heat dissipation area and a second heat dissipation area arranged on the peripheral sides of the first heat dissipation area, and the first heat dissipation area is arranged corresponding to a heat-generating element. The top plate and the bottom plate are spaced apart. The side plates are arranged on the peripheral sides of the second heat dissipation area of the bottom plate in a surrounding manner, and connect the bottom plate and the top plate, and the bottom plate, the top plate and the side plates are enclosed to form an evaporation cavity for accommodating a fluid medium. The backflow piece is arranged in the evaporation cavity and connects the bottom plate and the top plate. A first capillary structure layer is at least arranged on the side of the first heat dissipation area close to the top plate, a second capillary structure layer is at least arranged on the side of the second heat dissipation area close to the top plate, the capillary force of the first capillary structure layer is larger than that of the second capillary structure layer, and the flow resistance of the fluid medium in the second capillary structure layer is smaller than that in the first capillary structure layer.

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Inventors:
SUN ZHEN (CN)
CHEN XIAOXUE (CN)
DUAN ZHIWEI (CN)
XU QINGSONG (CN)
Application Number:
PCT/CN2023/075573
Publication Date:
January 04, 2024
Filing Date:
February 13, 2023
Export Citation:
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Assignee:
ZTE CORP (CN)
International Classes:
H05K7/20; F28D15/04; H01L23/427
Foreign References:
CN111863746A2020-10-30
CN212013418U2020-11-24
CN214381989U2021-10-08
CN114251964A2022-03-29
CN214582689U2021-11-02
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (CN)
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