Patent ID: 8192901
Filing Date: 2012-06-05
Classification: G03F,H01L

Abstract:
1. A glass substrate-holding tool to catch and hold a glass substrate, which comprises a base being flat at least at its surface, and a catching portion provided on at least at a part of the base, wherein: the catching portion has a surface structure and flexibility capable of catching the glass substrate by van der Waals forces, when it is brought in contact with the glass substrate, and the catching portion satisfies the following (a) and (b): (a) when the length of one side of the glass substrate is represented by L (mm), the catching portion is in contact with only the periphery of the glass substrate with a distance of at most 1/5 L from the edge of the glass substrate, (b) when the mass of the glass substrate is represented by T (g), the catching force F