Method of manufacturing multi-layer thin film, member including the same and electronic product including the same

1. A method of manufacturing a multi-layer thin film, the method comprising:

coating a metal object with a coating layer;

depositing at least one hardness-enhancing layer on the coating layer;

depositing a color layer on the at least one hardness-enhancing layer, and

depositing a protective layer on the color layer;

wherein the depositing the at least one hardness-enhancing layer on the coating layer consists of:

depositing a first hardness-enhancing layer comprising chromium (Cr) on the coating layer; and

depositing a second hardness-enhancing layer on the first hardness-enhancing layer, the second hardness-enhancing layer comprising at least one material selected from a group consisting of titanium nitride (TiN), chromium nitride (CrN) and aluminum nitride (AlN).

2. The method according to claim 1 , wherein the coating the metal object with the coating layer comprises creating a substantially smooth surface with the coating layer.

3. The method according to claim 1 , wherein the coating the metal object with the coating layer comprises forming the coating layer to a thickness of about 1 to about 30 micrometers.

4. The method according to claim 1 , wherein the coating the metal object with the coating layer comprises using one of a stoving paint, a UV paint and a powdered paint.

5. The method according to claim 1 , wherein the coating layer comprises at least one of an acrylic resin, a melamine resin and an epoxy resin.

6. The method according to claim 1 , wherein the color layer comprises at least one material selected from a group consisting of chromium (Cr), titanium (Ti), copper (Cu), gold (Au) and titanium nitride (TiN).

7. The method according to claim 1 , wherein the protective layer consists of at least one material selected from a group consisting of Teflon and silicon.

8. The method according to claim 1 , wherein each of the coating the metal object with the coating layer, the depositing the at least one hardness-enhancing layer, and the depositing the color layer comprise using at least one of a pulsed direct current power source and a radio frequency power source.

9. A metal member comprising:

a metal object;

a coating layer coated on the metal object;

at least one hardness-enhancing layer disposed on the coating layer;

a color layer deposited on the at least one hardness-enhancing layer; and

a protective layer disposed on the color layer;

wherein the at least one hardness-enhancing layer consists of:

a first hardness-enhancing layer comprising chromium (Cr) disposed on the coating layer; and

a second hardness-enhancing layer, disposed on the first hardness-enhancing layer, the second hardness-enhancing layer comprising at least one material selected from a group consisting of titanium nitride (TiN), chromium nitride (CrN) and aluminum nitride (AlN).

10. The metal member according to claim 9 , wherein the coating layer comprises a substantially surface which is smoother than a surface of the metal object on which the coating layer is coated.

11. The metal member according to claim 9 , wherein the coating layer has a thickness of about 1 to about 30 micrometers.

12. The metal member according to claim 9 , wherein the coating layer comprises at least one material selected from a group consisting of a stoving paint, a UV paint and a powdered paint.

13. The metal member according to claim 9 , wherein the coating layer comprises at least one of an acrylic resin, a melamine resin and an epoxy resin.

14. The metal member according to claim 9 , wherein the color layer comprises at least one material selected from a group consisting of chromium (Cr), titanium (Ti), copper (Cu), gold (Au) and titanium nitride (TiN), and wherein the color layer is different from the second hardness-enhancing layer.

15. The metal member according to claim 9 , wherein the protective layer consists of at least one material selected from a group consisting of Teflon and silicon.

16. An electronic product comprising:

a housing comprising a metal component; and

a multi-layer thin film bonded to an entirety or a part of a surface of the housing,

wherein the multi-layer thin film consists of:

a coating layer bonded to the entirety or part of the surface of the housing;

at least one hardness-enhancing layer bonded to the coating layer;

a color layer bonded to the at least one hardness-enhancing layer; and

a protective layer bonded to the color layer, and

wherein the at least one hardness-enhancing layer consists of:

a first hardness-enhancing layer, comprising chromium (Cr) disposed on the coating layer; and

a second hardness-enhancing layer, disposed on the first hardness-enhancing layer, the second hardness-enhancing layer comprising at least one material selected from a group consisting of titanium nitride (TiN), chromium nitride (CrN) and aluminum nitride (AlN).

17. The electronic product according to claim 16 , wherein the housing comprises an accessory.

18. The electronic product according to claim 16 , wherein the metal component comprises at least one material selected from a group consisting of aluminum (Al), zinc (Zn), magnesium (Mg), steel use stainless (SUS), stainless steel (STS) and steel.

19. The electronic product according to claim 16 , wherein the color layer comprises at least one material selected from a group consisting of chromium (Cr), titanium (Ti), copper (Cu), gold (Au) and titanium nitride (TiN), and wherein the color layer is different from the second hardness-enhancing layer.

20. The electronic product according to claim 16 , wherein the protective layer consists of at least one material selected from a group consisting of Teflon and silicon.