Patent ID: 8323855

Claim:
A pellicle frame apparatus wherein a pellicle is provided to one end surface of end surfaces of a frame, and an other end surface of the end surfaces of the frame has an opposing area that opposes a substrate, the pellicle frame apparatus comprising: a configuration that is capable of preventing a deformation of the one end surface of the frame and a shape of the opposing area on the other end surface from affecting one another; the opposing area comprises: a first area that is provided with a prescribed value of flexural rigidity with respect to the substrate; and a second area that is provided with a flexural rigidity with respect to the substrate, the value of which is smaller than that of the first area; the frame has a plurality of sides on three of which the first area is disposed; the first area and the second area are provided so as to be in contact with the substrate; the first area is disposed on a first side, a second side, and a third side, wherein the second side and third side are connected to the first side; and a slit is formed in the frame at the second area and between the end surface on the one side and the contact part of the substrate.