Composite heat-conducting sheet

Abstract

A composite heat-conducting sheet includes a conductive layer and an upper contact layer and a lower contact layer disposed on its two sides. The conductive layer includes a carrier with a plurality of grid cells and a plurality of heat-conducting particles, which are correspondingly disposed in the grid cells and can be selectively disposed in some grid cells to form locally enhanced heat-conducting areas. The upper and lower contact layers are made of a soft thermally conductive material. This improves the thermal conductivity of the heat-conducting sheet and enhances its adhesion to adjacent components.

Claims

1. A composite heat-conducting sheet, comprising: A conductive layer includes a carrier and a plurality of thermally conductive particles, the carrier having a plurality of grid cells, the thermally conductive particles being respectively disposed in the grid cells; an upper contact layer disposed on one side of the conductive layer; and a lower contact layer disposed on the other side of the conductive layer opposite to the upper contact layer; wherein the upper contact layer and the lower contact layer are made of a soft thermally conductive material.

2. The composite heat-conducting sheet as described in claim 1, wherein, Each grid cell contains a corresponding heat-conducting particle.

3. The composite heat-conducting sheet as described in claim 1, wherein, These thermally conductive particles are disposed in some of these grid cells to form locally reinforced thermally conductive regions.

4. The composite heat-conducting sheet as described in claim 1, wherein, The thermally conductive particles are diamond particles.

5. The composite heat-conducting sheet as described in claim 1, wherein, The carrier system is composed of copper, aluminum, stainless steel, nickel, titanium, iron, or their alloys.

6. The composite heat-conducting sheet as described in claim 5, wherein, The carrier system is a metal plate.

7. The composite heat-conducting sheet as described in claim 5, wherein, The carrier system is a metal woven mesh.

8. The composite heat-conducting sheet as described in claim 1, wherein, Each of the heat-conducting particles has a metal coating on its surface.

9. The composite heat-conducting sheet as described in claim 8, wherein, The metal plating is a copper layer.

10. The composite heat-conducting sheet as described in claim 1, wherein, The upper and lower contact layers are made of silicone thermally conductive material.

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