Copper containing particle and method for manufacturing same

Patent metadata

Field	Value
Publication number	US-9520205-B2
Application number	US-201414433814-A
Country	US
Kind code	B2
Filing date	May 12, 2014
Priority date	May 10, 2013
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

The present invention relates to a copper containing particle with a surface layer for preventing oxidation and a method for manufacturing the same, and provides a copper containing particle including: a core containing a copper component; a shell formed on the surface of the core, containing a silver component, and having at least one pore; and a filler part configured to fill the pore of the shell and contain an antioxidant component.

First claim

The invention claimed is:

1. A copper-containing particle comprising:
a core containing a copper component;
a shell formed on the surface of the core, containing a silver component, and having at least one pore; and
a filler part configured to fill the pore of the shell and contain an antioxidant component,
wherein a size of the pore is in the range of 0.1 to 100 nm,
wherein the copper-containing particle begins to be oxidized at a temperature over 500° C. based on thermogravimetric analysis, and
wherein the antioxidant component is a compound including a thiocyanate group.

2. The particle of claim 1 , wherein the antioxidant component does not react with the silver component.

3. The particle of claim 1 , wherein a thickness variation of the shell is ±50% of an average thickness of the shell.

4. The particle of claim 1 , wherein the core is one or more types selected from the group consisting of a copper particle, a glass particle coated with copper, a ceramic particle coated with copper, a metal particle coated with copper, a polymer particle coated with copper, and a graphite particle coated with copper.

5. The particle of claim 4 , wherein a ceramic of the ceramic particle coated with the copper is one or more types selected from the group consisting of aluminum oxide, aluminum nitride, beryllium oxide, tungsten carbide, silicon carbide, and zirconium oxide.

6. The particle of claim 4 , wherein a metal of the metal particle coated with the copper is one or more types selected from the group consisting of nickel, iron, silicon, tungsten, cobalt, and aluminum.

7. The particle of claim 1 , wherein the content of the silver component is in the range of 0.1 to 50 wt % with respect to a total weight of the copper-containing particle.

8. The particle of claim 1 , wherein the content of the antioxidant component is in the range of 0.1 to 50 wt % with respect to a total weight of the copper-containing particle.

9. A conductive paste composition comprising the copper-containing particle of claim 1 , a binder resin, and a solvent.

10. The composition of claim 9 , further comprising a glass frit.

Assignees

• Lg Chemical Ltd

Inventors

• Shin Jong Min
• Seo Jung Hyun
• Byun Young Chang
• Choe Jae Hoon

Classifications

• B22F1/17

  Metallic particles coated with metal · CPC title

• B22F1/065

  Spherical particles · CPC title

• B22F1/102

  Metallic powder coated with organic material · CPC title

• B22F1/18

  Non-metallic particles coated with metal · CPC title

• H01B1/026

  Alloys based on copper · CPC title