VERTICAL WAFER BOAT
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United States of America Patent
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app pub date -
Jul 10, 2017
filing date -
Jul 15, 2016
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Abstract
A vertical wafer boat includes a plurality of struts formed with a shelf plate portion configured to mount a silicon wafer, and a top plate and a bottom plate which fix upper and lower ends of the struts. The shelf plate portion is inclined downward toward the center of the boat, and a wafer support portion which protrudes upward and abuts on an edge portion of the silicon wafer is formed at a distal end of the shelf plate portion. To obtain the vertical wafer boat which supports a silicon wafer to be processed by a shelf plate portion provided in multiple stages, the vertical wafer boat being capable of reducing a risk of contact between a warped outer peripheral portion of a wafer and the shelf plate portion and suppressing deflection of the silicon wafer even when the silicon wafer has a large diameter.
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