Dielectric displacement current is charge displacement without charge transport. Displacement current does not involve the motion of charges (current flow), but involves the formation of electric dipoles which create an effect similar to the movement of charges. The cyclical reversals of these dipoles gives rise to magnetic effects, which in turn gives rise to displacement currents. This alternating electro-magnetic cycle persists (Propagates as light) until it is absorbed somewhere in time and space.

Perhaps Maxwell's insight came about when he recognized that the reciprocal of the square root of the product of the constants that related the magnetic and electric properties to the mechanical properties, had the dimensions of velocity, and that this velocity was close to the measured velocity of light. In any case, it seems that Maxwell postulated that a charge, or perhaps more correctly, an electrical field, could be "displaced" even though physical quantities possessing masses and charges were not "transported". Once the electric field was "transported" it took on a life of its' own. The electric field gave rise to a magnetic field, and vice versa, and the thing ( That some call a photon, and I call a cycle.) propagated, or existed in some kind of limbo, until it was absorbed into another physical system that possessed charge. In other words, we can "transport" an electro-magnetic cycle of any frequency, into a limbo, and it will live there, like a rolling hoop, until it is absorbed, as predicted by the statistics of quantum mechanics. Now the question is, what is the medium that "displacement currents" are "displaced" in? Is it an ether, a space, a field, a limbo??? Where does this cycle ( Alternating H and E fields), having an angular momentum of "h", and the energy of  (h * f),  live between cause and effect?

The answer is that the only property that exists between a cause and an effect is a time interval, and the only thing transported between a cause and an effect, is a cycle having the angular momentum of "h", and the energy of ( h * frequency). There are no photons, no spaces, no fields, no ethers. One could just as easily postulate that angels, rather than photons, conveyed change between cause and effect, and if one postulates a field, what is the field mapped to, a Euclidean space, a non-Euclidean space? Spaces are nasty, non-linear, multi-directional, temperature-sensitive, acceleration-sensitive, pressure-sensitive, bending-sensitive creatures. The purest form of space is a time interval multiplied by a constant. (And who needs the constant?)