Metal Foil and Composite Heat Dissipating Plate Thereof

Patent metadata

Field	Value
Publication number	US-2016370133-A1
Application number	US-201615168100-A
Country	US
Kind code	A1
Filing date	May 30, 2016
Priority date	Jun 22, 2015
Publication date	Dec 22, 2016
Grant date	—

Abstract

The present invention provides a highly thermal conductive and heat radiation absorptive metal foil with a basis weight of at least 220g/m 2 and a metal content of at least 90%. The present invention further provides a composite heat dissipating plate comprising a metal foil having a first surface and an opposite second surface, a basis weight of at least 220g/m 2 , a metal content of at least 90%, and at least a layer of nitrogen-doped graphene coated on at least one of the first surface and the second surface. At least one of the above-mentioned surfaces has a roughness of 0.19≦Ra≦0.23 μm, 1.3≦Rt≦1.84 μm and/or 1.02≦Rz≦1.07 μm. The metal foil has crystal size between 308 and 434 Å, and a lightness of surface colors of 25<L*<40.

First claim

What is claimed is:

1 . A metal foil having a basis weight of at least 220 g/m 2 and a metal content of at least 90%.

2 . The metal foil of claim 1 , wherein said metal foil is a copper foil.

3 . The metal foil of claim 1 , wherein said metal foil has a basis weight between 220 and 884 g/m 2 .

4 . The metal foil of claim 1 , wherein said metal foil has a metal content of at least 98%.

5 . The metal foil of claim 1 , wherein said metal foil has a first surface and an opposite second surface; and at least one of said first surface and said second surface has a roughness of 0.19≦Ra≦0.23 μm.

6 . The metal foil of claim 1 , wherein said metal foil has a first surface and an opposite second surface; and at least one of said first surface and said second surface has a roughness of 1.3≦Rt≦1.84 μm.

7 . The metal foil of claim 1 , wherein said metal foil has a first surface and an opposite second surface; and at least one of the said first surface and said second surface has a roughness of 1.02≦Rz≦1.07 μm.

8 . The metal foil of claim 1 , wherein said metal foil has crystal size between 308 and 434 Å.

9 . The metal foil of claim 1 , wherein said metal foil has a lightness of surface colors of 25<L*<40.

10 . A composite heat dissipating plate including:
a metal foil having a first surface and an opposite second surface, wherein said metal foil has a basis weight of at least 220 g/m 2 and a metal content of at least 90%; and at least one layer of nitrogen-doped graphene applied on at least one of said first surface and said second surface of said metal foil.

11 . The composite heat dissipating plate of claim 10 , wherein said metal foil is a copper foil.

12 . The composite heat dissipating plate of claim 10 , wherein said metal foil has a basis weight between 220 and 884 g/m 2 .

13 . The composite heat dissipating plate of claim 10 , wherein said metal foil has a metal content of at least 98%.

14 . The composite heat dissipating plate of claim 10 , wherein at least one of said first surface and said second surface has a roughness of 0.19≦Ra≦0.23 μm.

15 . The composite heat dissipating plate of claim 10 , wherein at least one of said first surface and said second surface has a roughness of 1.3≦Rt≦1.84 μm.

16 . The composite heat dissipating plate of claim 10 , wherein at least one of said first surface and said second surface has a roughness of 1.02≦Rz≦1.07 μm.

17 . The composite heat dissipating plate of claim 10 , wherein said metal foil has crystal size between 308 and 434 Å.

18 . The composite heat dissipating plate of claim 10 , wherein said metal foil has a lightness of surface colors of 25<L*<40.

Assignees

• Univ Chung Yuan Christian
• The-Hydroxyl® Applied Carbon Tech Inc

Inventors

• Liu Wei Jen
• Xie zheng zhe
• Shen Jun

Classifications

• H10W40/258

  Metallic materials (H10W40/254, H10W40/257, H10W40/255, H10W40/251, H10W40/253 take precedence) · CPC title

• H10W40/255

  having a laminate or multilayered structure, e.g. direct bond copper [DBC] ceramic substrates · CPC title

• F28D2021/0028

  for cooling heat generating elements, e.g. for cooling electronic components or electric devices · CPC title

• F28F21/081 Primary

  Heat exchange elements made from metals or metal alloys · CPC title

• F28F21/02

  of carbon, e.g. graphite · CPC title