Patent ID: 8648521
Filing Date: 2014-02-11
Classification: G09F

Abstract:
1. A fluorescent display device, comprising: an envelope having a light permeable anode plate and a front plate opposite to the anode plate; an electron source arranged in the envelope; a wiring arranged on an inner surface of the anode plate; a first light shielding metal film arranged on a portion of the inner surface of the anode plate; a gap created between a portion of the first light shielding metal film and a portion of the wiring disposed within the portion of the anode plate that includes the first light shielding metal film; an insulation layer arranged on both the wiring and the first light shielding film; a second light shielding film arranged on the insulation layer; an anode electrode covered with a phosphor film emitting light by an impingement of electrodes emitted from the electron source, the anode electrode arranged on the insulation layer; and an outer light source display formed by removing a portion of the first light shielding metal film, wherein the second light shielding film is positioned over the gap between the first light shielding film and the wiring arranged on the inner surface of the anode plate to cover the gap with the second light shielding film and prevent light leaking through the gap.