Patent ID: 6533123
Filing Date: 2003-03-18
Classification: H01L

Abstract:
A semiconductor wafer retaining structure, comprising:a container made of a conductive material in which a plurality of semiconductor wafers is stacked and retained therein, said container including a main body having a square base portion, a plurality of first concentric ribs formed in the base portion, a first cylindrical portion extending upwardly from the base portion outside the reinforcing concentric ribs and having an upper end, a plurality of slits formed in the first cylindrical portion to extend perpendicularly to the base portion, and slant protrusions formed on an upper outer surface of the first cylindrical portion; and a lid body having an upper portion, a second cylindrical portion extending from the upper portion to be located outside the first cylindrical portion when the lid body is assembled with the main body, a square pole portion circumscribed to the second cylindrical portion, a circular channel formed in the upper portion for receiving the upper end of the first cylindrical portion, a plurality of second concentric ribs formed in the upper portion inside the second cylindrical portion, and slant slots formed inside the circular channel to engage the slant protrusions when the lid body is assembled with the main body.