Storage container, shutter opening/closing unit of storage container, and wafer stocker using storage container and shutter opening/closing unit

A storage container comprising:

• a body portion that has multiple shelf plates, each having an opening portion in one surface thereof and being disposed at a regular interval in a vertical direction so as to support a tabular object to be stored thereon, a spacer that is disposed between the multiple shelf plates and maintains the interval between the shelf plates vertically adjacent to each other, and a nozzle to supply clean gas internally;
• a cover member that covers a side surface, a top surface and a bottom surface other than the opening portion of the body portion;
• and
• a shutter portion that has multiple shield plates arranged to cover the opening portions corresponding to the multiple shelf plates, and moving up and down separately from the shelf plates to access the objects supported and stored on the shelf plates,
• wherein the shutter portion is disposed apart from the body portion to form a minute space therebetween so as to flow out the gas supplied from the nozzle to the outside by a proper quantity while maintaining an inner pressure of the body portion, and
• the shield plates are accumulated to contact each other and disposed to be vertically moved individually.