Thermally conductive sheet
AssigneeSekisui Polymatech Co., Ltd.
InventorsHiroki Kudoh, Taku Sasaki, Kana Hattori, Kazuyuki Yahara, Yasunari Kusaka
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Abstract
A thermally conductive sheet 10 of the present invention comprises a polymer matrix 12 and an anisotropic filler 13, and the anisotropic filler 13 is oriented in a thickness direction. The anisotropic filler 13 is disposed in such a way as to fall down in a proportion of 1 to 45% in the vicinity of surfaces 10A, 10B of the thermally conductive sheet 10. According to the present invention, a thermally conductive sheet capable of sufficiently improving the thermal conductive properties in the thickness direction can be provided.
Claims14
A thermally conductive sheet comprising:
- a polymer matrix;
- and
- an anisotropic filler,
- wherein a first portion of the anisotropic filler is oriented in a thickness direction,
- wherein a second portion of the anisotropic filler is disposed in such a way as to lie down near a surface of the thermally conductive sheet, the surface being observed with an optical microscope,
- wherein the second portion of the anisotropic filler is 1 to 45% of a total number of the anisotropic fillers observed in an observation image observed with the optical microscope, and
- wherein a proportion of the anisotropic filler which is disposed in such a way as to lie down near the surface is larger than a proportion of the anisotropic filler which is disposed in such a way as to lie down inside the thermally conductive sheet.
Dependencies are inferred from the claim text.