An image forming apparatus includes a first substrate and a second substrate disposed opposite to the first substrate, with fluorescent material being provided on the second substrate. A matrix wiring having a plurality of first wires and a plurality of second wires is provided, with each of the first wires located on the first substrate, and each of the second wires intersecting the plurality of first wires. Also included are electron-emitting devices, each of which emit an electron by applying a signal to the matrix wiring, and a metal electrode, having a plate-shaped form, provided above the matrix wiring, with the metal electrode having electron through-holes for passing electrons emitted by the electron-emitting devices. A support member, having a plate-shaped form, is provided on the metal electrode, wherein the metal electrode is arranged in parallel to the first substrate and a longitudinal direction of a cross section of the support member and a longitudinal direction of a cross-section of the metal electrode are perpendicular and intersect both of the metal electrode and the support member.