ELECTRON-EMITTING DEVICE, ELECTRON SOURCE USING THE SAME, IMAGE DISPLAY APPARATUS, AND INFORMATION DISPLAYING AND REPRODUCING APPARATUS

摘要

An electron-emitting device is provided with improved electron emitting efficiency. An electron-emitting device includes first and second electroconductive films disposed (21a, 21b) on a surface of a substrate in opposition to each other to form a gap (8) between ends of the first and second electroconductive films. The end of the first electroconductive film includes a portion (A) the minimum distance d1 from which to the second electroconductive film (B) is 10 nm or less. Let d2 denote a minimum distance between the end of the first electroconductive film which is away from the portion the minimum distance d1 from which to the second electroconductive film is 10 nm or less by the minimum distance d1 and the end of the second electroconductive film. The relation of d2/d1>= 1.2 is satisfied.