Pellicle frame and pellicle
Abstract:
There is provided a pellicle frame which prevents particles such as carbon black particles or filler particles from contaminating a photomask even when stray light hits the inside face of the pellicle frame in the exposure step of photolithography. More specifically, provided are a pellicle frame including a frame base, and a polymer coating layer coating at least an inner circumferential surface of the frame base, the polymer coating layer including an outermost polymer layer on a side farthest away from the frame base and one or more inner polymer layers between the frame base and the outermost polymer layer, wherein at least one of the one or more inner polymer layers contains particles, and the outermost polymer layer contains no particles or has a particle concentration lower than a highest particle concentration among the one or more inner polymer layers; and a pellicle including the pellicle frame.
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