公开(公告)号：US20240300819A1

公开(公告)日：2024-09-12

申请号：US18552398

申请日：2021-11-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Youji SHIRATO ,  Norihiro KAWAMURA ,  Yuji YAMAGISHI ,  Mitsuru TAMAOKI

IPC: C01B32/21 ,  H01L23/00 ,  H01L23/42 ,  H05K7/20

CPC classification number: C01B32/21 ,  H05K7/2039 ,  C01P2004/03 ,  C01P2006/90 ,  H01L23/42 ,  H01L24/29 ,  H01L24/32 ,  H01L2224/29193 ,  H01L2224/32245

Abstract: The problem to be overcome by the present disclosure is to provide a graphite sheet with the ability to lower the contact thermal resistance at the surface of the graphite sheet. In a graphite sheet, a plurality of graphite layers are stacked one on top of another in a thickness direction. The plurality of graphite layers includes: a first graphite layer that forms an outermost layer of the graphite sheet; and a second graphite layer other than the first graphite layer. At least a part of the second graphite layer is exposed through a surface of the first graphite layer. The graphite sheet has an apparent shear strength equal to or greater than 0.1 MPa and equal to or less than 0.5 MPa as measured by SAICAS method from a depth of 0.5 m to a depth of 19 m.

公开(公告)号：US20240114661A1

公开(公告)日：2024-04-04

申请号：US18473952

申请日：2023-09-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Youji SHIRATO ,  Norihiro KAWAMURA

IPC: H05K7/20

CPC classification number: H05K7/2039

Abstract: A thermal conductive member includes a thermal conductive sheet and an adhesive member. The adhesive member is stacked on a front surface of the thermal conductive sheet. An adhesive force of the adhesive member decreases along with a temperature rise.

公开(公告)号：US20230352365A1

公开(公告)日：2023-11-02

申请号：US18043857

申请日：2021-09-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Youji SHIRATO ,  Norihiro KAWAMURA ,  Masaya HATTORI

IPC: H01L23/42 ,  H01L23/40 ,  H01L21/48 ,  H01L23/373

CPC classification number: H01L23/42 ,  H01L23/4006 ,  H01L21/4882 ,  H01L23/3735 ,  H01L2023/4087 ,  H01L2023/405

Abstract: A thermoconductive material includes a carbonaceous substance as a main component and has a plurality of screw insertion portions into which a plurality of screws are to be inserted on a one-to-one basis in a thickness direction defined with respect to the thermoconductive material. The thermoconductive material includes an inside region located at a side of a central portion of the thermoconductive material with respect to the plurality of screw insertion portions and an outside region located at a side of an outer edge portion of the thermoconductive material with respect to the inside region. The outside region includes a support portion which is at least part of the outside region. When a pressure of 500 kPa is applied in the thickness direction, an outside thickness which is a thickness of the support portion is greater than an inside thickness which is a greatest thickness of the inside region.

公开(公告)号：US20250142769A1

公开(公告)日：2025-05-01

申请号：US18921971

申请日：2024-10-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Youji SHIRATO ,  Ryosuke USUI ,  Naoki SAITOU ,  Norihiro KAWAMURA

IPC: H05K7/20

Abstract: A liquid immersion cooling device includes an electronic device and a cooling medium. The electronic device includes a circuit board, a heat generator mounted on the circuit board, a heat dissipator, and a thermal conductive sheet interposed between the heat generator and the heat dissipator. The cooling medium is arranged to immerse the electronic device at least partially. At least part of the thermal conductive sheet is made of a porous material.

公开(公告)号：US20230247806A1

公开(公告)日：2023-08-03

申请号：US18098989

申请日：2023-01-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Youji SHIRATO ,  Naoki SAITOU ,  Norihiro KAWAMURA

IPC: H05K7/20

CPC classification number: H05K7/209

Abstract: An electrical device according to the present disclosure includes a heat generator, a heat dissipator, a thermal conductive sheet, and a thermal conductive fluid. The heat generator has a first surface. The heat dissipator has a second surface that faces the first surface. The thermal conductive sheet and the thermal conductive fluid are both interposed between the first surface and the second surface. The first surface and the second surface face each other in their respective counter regions. Each of the counter regions includes a first region and a second region when viewed in a direction in which the first and second surfaces face each other. The first region holds the thermal conductive fluid but does not receive the thermal conductive sheet. The second region is adjacent to the first region and receives the thermal conductive sheet.