公开(公告)号：US09153761B2

公开(公告)日：2015-10-06

申请号：US14352445

申请日：2012-10-03

Applicant: Nitto Denko Corporation

Inventor： Yoshinari Takayama ,  Takafumi Hida ,  Daisuke Kitagawa ,  Kenichi Tagawa ,  Kunio Nagasaki ,  Ryoichi Matsushima ,  Susumu Kiyohara ,  Toshio Uota

IPC: B29C43/02 ,  B05D3/02 ,  H01L23/48 ,  H01L23/28 ,  H01L33/64 ,  H01L23/373 ,  C09K5/14 ,  C08L33/08 ,  C08L33/10 ,  C09D127/12

CPC classification number: H01L33/641 ,  C08L33/08 ,  C08L33/10 ,  C08L2203/20 ,  C09D127/12 ,  C09K5/14 ,  H01L23/3737 ,  H01L2224/2929 ,  H01L2224/29393 ,  H01L2224/29499 ,  Y10T428/25 ,  C08L27/12 ,  C08L27/16 ,  C08K3/38 ,  C08K3/04 ,  C08F2220/1858 ,  C08F220/06

Abstract: The present invention provides a thermally-conductive sheet excellent in heat dissipation properties. The thermally-conductive sheet includes a polymer matrix and a thermally-conductive filler dispersed in the polymer matrix. The present invention is a thermally-conductive sheet including a polymer matrix and non-spherical particles of a thermally-conductive filler that are dispersed in the polymer matrix. At least a part of the thermally-conductive filler particles are oriented in a thickness direction of the sheet. When a portion of the sheet where the thermally-conductive filler particles have the highest degree of orientation in the thickness direction of the sheet is defined as a center of orientation, and an axis passing through the center of orientation and perpendicular to sheet surfaces is defined as a central axis of orientation, the thermally-conductive sheet has a region where the thermally-conductive filler particles are oriented toward one point on the central axis of orientation and where the degree of orientation of the thermally-conductive filler particles in the thickness direction of the sheet decreases from the center of orientation toward a periphery of the sheet.

Abstract translation: 本发明提供了散热性优异的导热片。 导热片包括分散在聚合物基质中的聚合物基质和导热填料。 本发明是一种导热片，其包含聚合物基质和分散在聚合物基质中的导热填料的非球形颗粒。 至少一部分导热填料颗粒在片材的厚度方向上取向。 当导热填料颗粒在片材的厚度方向上具有最高取向度的片材的一部分被定义为取向中心时，通过定向中心和垂直于片材表面的轴线被限定 作为取向的中心轴，导热片具有导热性填充剂粒子朝向取向中心轴的一点的区域，导热性填料粒子的厚度方向的取向度 的片材从取向的中心朝向片材的周边减小。

公开(公告)号：US20140252404A1

公开(公告)日：2014-09-11

申请号：US14352445

申请日：2012-10-03

Applicant: Nitto Denko Corporation

Inventor： Yoshinari Takayama ,  Takafumi Hida ,  Daisuke Kitagawa ,  Kenichi Tagawa ,  Kunio Nagasaki ,  Ryoichi Matsushima ,  Susumu Kiyohara ,  Toshio Uota

IPC: H01L33/64

CPC classification number: H01L33/641 ,  C08L33/08 ,  C08L33/10 ,  C08L2203/20 ,  C09D127/12 ,  C09K5/14 ,  H01L23/3737 ,  H01L2224/2929 ,  H01L2224/29393 ,  H01L2224/29499 ,  Y10T428/25 ,  C08L27/12 ,  C08L27/16 ,  C08K3/38 ,  C08K3/04 ,  C08F2220/1858 ,  C08F220/06

Abstract: The present invention provides a thermally-conductive sheet excellent in heat dissipation properties. The thermally-conductive sheet includes a polymer matrix and a thermally-conductive filler dispersed in the polymer matrix. The present invention is a thermally-conductive sheet including a polymer matrix and non-spherical particles of a thermally-conductive filler that are dispersed in the polymer matrix. At least a part of the thermally-conductive filler particles are oriented in a thickness direction of the sheet. When a portion of the sheet where the thermally-conductive filler particles have the highest degree of orientation in the thickness direction of the sheet is defined as a center of orientation, and an axis passing through the center of orientation and perpendicular to sheet surfaces is defined as a central axis of orientation, the thermally-conductive sheet has a region where the thermally-conductive filler particles are oriented toward one point on the central axis of orientation and where the degree of orientation of the thermally-conductive filler particles in the thickness direction of the sheet decreases from the center of orientation toward a periphery of the sheet.

Abstract translation: 本发明提供了散热性优异的导热片。 导热片包括分散在聚合物基质中的聚合物基质和导热填料。 本发明是一种导热片，其包含聚合物基质和分散在聚合物基质中的导热填料的非球形颗粒。 至少一部分导热填料颗粒在片材的厚度方向上取向。 当导热填料颗粒在片材的厚度方向上具有最高取向度的片材的一部分被定义为取向中心时，通过定向中心和垂直于片材表面的轴线被限定 作为取向的中心轴，导热片具有导热性填充剂粒子朝向取向中心轴的一点的区域，导热性填料粒子的厚度方向的取向度 的片材从取向的中心朝向片材的周边减小。