A wafer stocker is provided in present invention including a main body having an opening communicating with an inner accommodation space, a plurality of storage cells for wafer pod disposed in the main body, and an embedded storage shelf mounting in the accommodation space of the main body via the opening, the embedded storage shelf is provided with a plurality of storage cells for wafer pods which may combine with the storage cells in the main body to serve jointly as the storage cells of the entire wafer stocker, wherein the embedded storage shelf may be removed from the accommodation space to be replaced with an embedded wafer sorter.
1. A wafer stocker, comprising:
a main body having an opening communicating with an inner accommodation space;
a plurality of storage cells for wafer pods disposed in said main body;
an embedded storage shelf mounted in said accommodation space of said main body via said opening, said embedded storage shelf is provided with a plurality of storage cells for wafer pods, wherein each said storage cell of said embedded storage shelf is identical to said storage cell in said main body to combine said the storage cells in said main body to serve jointly as the storage cells of the entire said wafer stocker; and
an embedded wafer sorter configured to be installed in said accommodation space when said embedded storage shelf is removed.
2. The wafer stocker according to claim 1 , wherein said embedded storage shelf is a Plug & Play embedded storage shelf.