FLUORESCENT DISPLAY TUBE FORMED WITH HALF MIRROR

PROBLEM TO BE SOLVED: To enable high-frequency induction heating of the getter, without impairing the effects of reflection reduction, in the fluorescent display tube formed with a metal film for half mirror over the whole surface the front glass. SOLUTION: A half-mirror metal film 14, of which the opening parts are arranged in lattice-shape, is formed over the whole face of the inner face of the front glass 12, and a widow part 141 for high-frequency induction heating of the getter 31 is formed on the half-mirror metal film 14, and plural pieces of electrically insulated metal film 411 are formed on the window part 141. The high-frequency heating coil can heat the getter 31 by magnetic induction via the window part 141, without being affected by the metal film 411. The metal films 411 at the window part 141 perform the effect of reflection reduction same as the half-mirror metal film 14.