Patent ID: 7326886

Claim:
A wafer support member comprising; a plate-shaped ceramic body having one main surface of a mount surface on which a wafer is mounted and a penetrating via hole from one main surface to the other main surface, a conductive layer provided on the mount surface, a connection conductive layer provided on an inner surface of the via hole so as to be connected to the conductive layer, a buried conductive layer which is buried in the plate-shaped ceramic body so as to be connected to the connection conductive layer, a conducting member having one end and the other end and arranged apart from the via hole of the plate-shaped ceramic body so that it is connected to the buried conductive layer in the vicinity of one end, and a conductive pipe connected to the other main surface of the plate-shaped ceramic body and a central axis of the via hole coincides with a central axis of the conductive pipe, wherein the conducting member is connected to the pipe.