VACUUM VESSEL, VACUUM PROCESSING APPARATUS INCLUDING VACUUM VESSEL, VACUUM VESSEL MANUFACTURING METHOD, AND ELECTRONIC DEVICE MANUFACTURING METHOD

摘要

A vacuum vessel includes a pair of bending members which are formed by bending metal plates in predetermined shapes and are bonded to each other to form a closed space inside them. The vacuum vessel also includes a sealing member which seals the gap in the bonding portion between the bending members, and a cubic lattice structure which abuts against the inner surfaces of both the bending members and is accommodated in the closed space. The vacuum vessel further includes a magnet unit. The magnet unit fixes the bending members onto the structure and seals the gap in the bonding portion between the bending members by pressing an O-ring serving as a sealing member along the bonding portion.