Patent ID: 8662308

Claim:
A substrate storage tray for storing a large size substrate, the substrate storage tray comprising: a frame member that comprises a pair of first frame portions opposed to each other and a pair of second frame portions opposed to each other and has a frame shape; and three or more substrate supporting members each of which has a plate shape, is disposed inside a region enclosed by the frame member, and is arranged to support one surface of the substrate, wherein the pair of first frame portions are each split into a group of three or more split first frame portions along a long direction of the pair of first frame portions, the three or more split first frame portions having identical cross-sectional shapes and being movable along the long direction of the pair of first frame portions; respective groups of the three or more split first frame portions consist of two terminal split first frame portions and one or more central split first frame portions provided between the two terminal split first frame portions, the two terminal split first frame portions each connected to one of the second frame portions; respective pairs of the terminal split first frame portions and respective pairs of the central split first frame portions are bridged by the substrate supporting members; a space between the pair of second frame portions is varied by varying spaces between each adjacent split first frame portions, the space between the pair of second frame portions being smallest when all of the three or more split first frame portions composing each of the pair of first frame portions contact mutually, and widen when the spaces between each adjacent split first frame portions are widened.