Patent ID: 8159654
Filing Date: 2012-04-17
Classification: G03F

Abstract:
1. A pressure body for pressurizing a photomask and a pellicle assembly along a given pressure direction, the pellicle assembly comprising a pellicle film and a pellicle frame for supporting the pellicle film, the pressure body comprising: three or more contact members that come into contact with the photomask or the pellicle assembly at one side of the pressure direction; a main body provided with an opening, the opening supporting the contact members so as to prevent the contact members from dropping off to said one side, the opening being able to change positions within a plane perpendicular to the pressure direction, the contact members being supported at said positions; a cover body fixed to the main body at the other side of the pressure direction; and a buffer member located between the contact members and the cover body in the pressure direction.