[en] The neutrino structure has been studied with three major assumptions for constituent particles: (1) Weak charge is capable of working as a weak dipole moment and the electromagnetic self-energy in the Fermi gauge produces the neutrino mass, (2) motions of neutrino constituent particles are governed in two separate ways by extended Dirac and extended Klein-Gordon equations, and (3) the neutrino system has implicit internal subspaces that give constraints on kinetic motions and potential interactions. So-called vector and axial-vector movements play a role of time and spatial motions, respectively, and generate the individual potential propagations at the same time. The exchange relation for operators of constituent motions explains the creation of half-integer spin as well as a periodical vibration motion. (author)