Pellicle support frame and production method
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United States of America Patent
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Sep 9, 2015
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Nov 4, 2014
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Abstract
A pellicle support frame is provided with a frame body made of aluminum alloy and has a pellicle film bonded to the upper surface of the frame body and a transparent substrate bonded to the lower surface of the frame body. Within the frame body, a plurality of hollow portions are provided to be lined up in the circumferential direction of the frame body, and a through-hole which leads from the outer peripheral surface to the inner peripheral surface of the frame body is formed between two adjacent hollow portions. This configuration makes it possible to prevent strain from arising in the support frame and the transparent substrate after the support frame is bonded to the transparent substrate.
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