Patent ID: 6126382
Filing Date: 2000-10-03
Classification: H01L,Y10S

Abstract:
Apparatus for aligning a flat substrate with respect to another body, said apparatus comprising:at least three rotatable wheels mounted on horizontal axles, each of the wheels being rotatable independently of the other wheels, respective edges of said wheels defining a shape substantially congruent with the shape of said flat substrate, said axles being positioned substantially in the same plane and each of the axles being aligned substantially parallel to an edge of said substrate to be contacted by the wheel mounted on said axle;a body to which said flat substrate is to be aligned, said body having a supporting surface for supporting said flat substrate, said supporting surface being positioned generally in an area between said wheels; anda mechanism for lowering said flat substrate from a position above said wheels to a position wherein a peripheral region of said flat substrate makes contact with at least two of said wheels.