A back substrate has a plurality of electron emission elements. A display
substrate comprises an optically transparent substrate disposed opposite
to the back substrate; an accelerating electrode formed on the inner face
of the optically transparent substrate for accelerating electron beams
emitted from the electron emission elements; and luminescent materials
excited by the electron beams to emit light toward the outer face of the
optically transparent substrate. A frame member supports the back
substrate and display substrate on their peripheries. A vacuum chamber is
defined by the back substrate, display substrate, and frame member. A
conductor electrically connected to the accelerating electrode is drawn
out to the outside of the vacuum chamber. A high voltage connector for
supplying an accelerating voltage to the conductor is removably connected
to the conductor.