BRIEF DESCRIPTION OF THE DRAWINGS [0109]FIGS. 1a to 1 e are cross sections illustrating the steps of forming a mask in the bump formation method pertaining to a first embodiment of the present invention; [0110]FIGS. 2a and 2 b are a cross section and a plan view illustrating the step of providing the squeegeeing helper means around the substrate; [0111]FIGS. 3a and 3 b are a cross section and a pl