By using Stroh's formalism, simple explicit compact expressions of Green's
functions for a piezoelectric semi-infinite body, with a fixed conductor su
rface electrode, subject to a singularity (i.e., a generalized line disloca
tion and a generalized line force at a point z(degrees)) are presented. Cou
lomb forces acted on the free line charge at z(degrees) due to the boundary
polarization charges of the medium and the induction charges of the conduc
tor together with the electromechanical coupling effects inside the region
are analyzed in detail. The obtained results are valid not only for plane a
nd antiplane problems but also for the coupled problems between inplane and
outplane deformations.