Abstract:
Provided are a mask blank substrate processing device, a mask blank substrate processing method, a mask blank substrate fabrication method, a mask blank fabrication method, and a transfer mask fabrication method, for surface processing a mask blank substrate such that a high-level smoothness and a low-defect quality are satisfied. A mask blank substrate processing device (1) comprises: substrate support means (3) for supporting a substrate (Y); a catalytic surface plate (4) comprising a catalytic face (4a) which is positioned opposite the principal surface of the substrate (Y); relative movement means (5) for causing the catalytic face (4a) and the principal surface to move relative to each other in a state of being either in contact or in close proximity; first processing fluid supply means (6) which supplies a first processing fluid for CARE to the principal surface; and physical cleaning means (7) for removing foreign matter which has adhered to the principal surface from the principal surface, using a physical action.
Abstract:
A method for manufacturing a low-defect and high-quality mask blank substrate with minimized transfer pattern defects and high mechanical strength, particularly such that the occurrence of a phenomenon where a portion of a transfer pattern and a principal surface of the substrate therebeneath are broken off together is minimized such that there is little pattern loss. The mask blank is manufactured by preparing a mask blank substrate (X) having a substrate principal surface (X1) polished using a polishing solution containing abrasive grains, etching the substrate principal surface (X1) using catalyst-referred etching so as to remove damaged portions from the principal surface (X1), and then depositing a thin film that forms a transfer pattern on the substrate principal surface (X1) of the substrate (X) by sputtering.
Abstract:
The present invention is a method of cleaning a substrate, comprising cleaning at least one surface of a substrate located in a liquid by injecting pressurized cleaning liquid containing bubbles or cleaning particles from a injection nozzle to at least one surface of the substrate.