Patent ID: 7944137

Claim:
An electron source having a substrate and a plurality of electron-emitting devices, wherein each of the electron-emitting devices has a pair of electrodes provided on the substrate, and a plurality of conductive films having respective electron emitting portions, provided between the pair of electrodes on the substrate so as to be electrically connected to the pair of electrodes, the electron source comprising: a short-circuit suppressing film which is positioned between the plurality of conductive films and is provided on the electron-emitting device so as to be electrically connected to the pair of electrodes, and mainly contains tungsten (W) and germanium (Ge) nitride, wherein a ratio of the number of tungsten atoms to the number of tungsten and germanium atoms is 0.24 or more in the short-circuit suppressing film, surface resistivity of the short-circuit suppressing film is not less than 1×10 10 Ω/square and not more than 1×10 13 Ω/square.