Patent ID: 8337680

Claim:
A substrate holder, comprising: a fixed holding member and a movable holding member for holding a substrate therebetween; and a sealing portion for sealing an outer circumferential end of the substrate when the substrate is held between the movable holding member and the fixed holding member, wherein the fixed holding member has a conductor, and the movable holding member has an electrical contact in the form of a leaf spring member for being electrically connected to the conductor in the area sealed by the sealing portion to supply the substrate with electric energy when the substrate is held between the movable holding member and the fixed holding member, and wherein the electrical contact in the form of the leaf spring member has: a leg portion fixed to the movable holding member; and a contact portion configured to elastically deform when making contact with an outer circumferential edge of the substrate when the substrate is held between the movable holding member and the fixed holding member.