Patent ID: 8697582
Filing Date: 2014-04-15
Classification: C23C,H01L,H01M,Y02E

Abstract:
1. A substrate-conveying roller having a function of conveying a substrate under vacuum, and a function of supplying a gas for cooling the substrate to the substrate under vacuum, the substrate-conveying roller comprising: a first shell having a cylindrical outer circumferential surface for supporting the substrate, and a plurality of first through holes provided along a circumferential direction of the outer circumferential surface and serving as supply paths for the gas, the first shell being capable of rotating in synchronization with the substrate; an internal block disposed inside the first shell and blocked from rotating in synchronization with the substrate; a manifold that is a space defined by the internal block inside the first shell so as to retain the gas introduced from outside, that is formed so as to guide the gas to the plurality of first through holes within the range of a specific angle whose vertex is on a rotational axis of the first shell, and that has a relatively large size in a radial direction of the first shell; a clearance that is a space formed inside the first shell, that is formed so as to guide the gas to the plurality of first through holes outside the range of the specific angle, and that has a relatively small size in the radial direction; and a second shell disposed between the first shell and the internal block, and having a second through hole for guiding the gas from the manifold to the plurality of first through holes, wherein a central axis of the first through hole is offset from a central axis of the second through hole.