Patent attributes
A reticle retaining system including an inner pod and an outer pod is described. The inner pod includes an inner base configured to receive a workpiece; an inner cover configured to couple to the inner base, thereby forming an interior for housing the workpiece; and a hold down pin movably arranged through the inner cover and configured to press the workpiece. The outer pod includes an outer base configured to receive the inner base, an outer cover configured to couple to the outer base, and a pushing element arranged on the outer cover. The hold down pin, the outer cover and the pushing element have a charge dissipation property. When the pushing element pushes the hold down pin to press the workpiece, a charge dissipation path is established from the received workpiece, through the hold down pin and the pushing element, to the outer cover.
