Patent ID: 6853117

Claim:
An electron source comprising a substrate, a first conductive member provided on a surface of said substrate, a second conductive member positioned on said substrate and crossing said first conductive member, an insulating member provided under said second conductive member and serving to insulate said first and second conductive members, and an electron-emitting device having a pair of electrodes, one electrode of the pair being connected to said second conductive member and another electrode of the pair being connected to said first conductive member, and an electron-emitting member disposed between the electrodes, wherein a connection between said second conductive member and the one of the electrodes is made through an aperture provided in said insulating member, and a shape of a cross section of said aperture obtained by cutting said insulating member along a surface approximately parallel with the surface of said substrate includes an area where a width of the area becomes narrower from one end to another end of said aperture, and a side at the one end of said aperture does not cross the one of the electrodes.