The present application discloses a thin film transistor, a display panel and a display apparatus having the same, and a fabricating method thereof. The thin film transistor includes a base substrate and an active layer on the base substrate having a first portion corresponding to a channel region, a second portion corresponding to a source electrode contact region, and a third portion corresponding to a drain electrode contact region, wherein the second portion and the third portion contain a polymer carbon nanotubes composite including a polymer and a carbon nanotubes material.