It is therefore possible to form the brim 12 a of a smaller thickness with a higher degree of accuracy, as compared to the case utilizing a mask (refer to FIG. 12), by filling the through hole 7 with the conductive paste filler 12 by the use of the plane table 34. [0226] Meanwhile, Ag, Cu, C, Cu coated with Ag and other conductive pastes can be used to form the conductive paste filler 12. [0227] A