Electron emission device and display device using the same

An electron emission display device comprises:

• a pair of first and second substrates facing each other with a vacuum space in between;
• a plurality of electron emission devices provided on the first substrate:
• a collector electrode provided in the second substrate;
• and
• a fluorescent layer formed on the collector electrode,
• each of the electron emission devices comprising an electron-supply layer of metal or semiconductor;
• an insulator layer formed on the electron-supply layer;
• and a thin-film metal electrode formed on the insulator layer and facing a vacuum space, wherein said insulator layer has a film thickness of 50 nm or greater, and said electron-supply layer has a silicide layer.