A field emission display with a first substrate and a second substrate
which are arranged opposite to each other and have a specific distance
between them. At least one first electrode is formed on the first
substrate and at least one second electrode is formed on the second
substrate. At least one third electrode is insulated from the first
electrode and an electron emission source is connected to the third
electrode. A fourth electrode controls the electrons emitted from the
electron emission source so that they reach the second electrode. A
driver detects a current flowing through the fourth electrode and
controls a driving voltage applied to the fourth electrode based on the
detected current.