Patent ID: 7436075

Claim:
An ion beam irradiation apparatus comprising: a vacuum chamber which is to be evacuated to a vacuum; an ion source which is disposed inside said vacuum chamber, and which irradiates a substrate to be processed with an ion beam that is larger in width than the substrate; a substrate driving mechanism which drives the substrate in said vacuum chamber in a direction that is substantially perpendicular to a width direction of the ion beam emitted from said ion source; a rotation shaft which is passed through said vacuum chamber, and a center axis of which is located in a place separated from said ion source toward the substrate, and substantially parallel to a surface of the substrate; an arm which is disposed inside said vacuum chamber, and which supports said ion source through said rotation shaft; and a motor which is disposed outside said vacuum chamber, and which reciprocally rotates said rotation shaft, said ion source being supported to be rotatable about said center axis of said rotation shaft.