In a thin film transistor and a flat panel display device having the same,
cross-talk is minimized. The flat panel display device includes a
substrate, a first thin film transistor, a second thin film transistor,
and a display element. The first thin film transistor includes: a first
gate electrode formed on the substrate; a first electrode insulated from
the first gate electrode; a second electrode insulated from the first
gate electrode and surrounding the first electrode in the same plane; and
a first semiconductor layer insulated from the first gate electrode and
contacting the first electrode and the second electrode. The second thin
film transistor includes: a second gate electrode formed on the substrate
and electrically connected to one of the first electrode and the second
electrode; a third electrode insulated from the second gate electrode; a
fourth electrode insulated from the second gate electrode and surrounding
the third electrode in the same plane; and a second semiconductor layer
insulated from the second gate electrode and contacting the third
electrode and the fourth electrode.