Patent ID: 8717543

Claim:
A substrate holder that constitutes a part of an exposure apparatus which exposes a pattern of a mask to a substrate while synchronously moving the mask and the substrate which is installed from external, the substrate holder comprising: a circumferential edge part that surrounds a suction space; first support parts that are provided at prescribed intervals in the suction space and that support the substrate; and second support parts that each extend from the circumferential edge part toward the first support parts and that support the substrate, wherein: each of the second support parts extends in a direction substantially parallel to a direction in which the mask and the substrate are synchronously moved, and extending lengths of the second support parts from the circumferential edge part toward the first support parts are made varied so that tip parts of the second support parts adjacent to the first support parts are non-linearly arranged and non-arcuately arranged, and a substrate contact area of each of the second support parts is greater than a substrate contact area of each of the first support parts.