Patent ID: 8147657
Filing Date: 2012-04-03
Classification: C23C,H01J

Abstract:
1. A sputtering apparatus, comprising: first and second targets that are disposed such that their surfaces face each other; a third target disposed such that its surface is in parallel with the surface of the first target; a fourth target disposed such that its surface is in parallel with the surface of the second target and the fourth target faces a surface of the third target; and first to fourth cathode electrodes that are disposed in a back face of the first to the fourth targets, wherein a film is formed on a surface of an object to be film formed at a location that faces a space between the first and the second targets, wherein the surface of the first target is positioned in a similar plane where the surface of the third target is positioned, wherein the surface of the second target is positioned in a similar plane where the surface of the fourth target is positioned, wherein the first and second targets are disposed between the object to be film formed on which the film is being formed and the third and the fourth targets, and wherein the sputtering particles discharged from the third and fourth targets pass through the space between the first and the second targets and reach the object to be film formed.