Patent ID: 7733006

Claim:
An electron-emitting device comprising: a cathode electrode; and a layer connected to the cathode electrode, wherein a plurality of groups of particles, each group being constituted by at least two particles which comprise metal as a main component and are adjacent to each other, are discretely arranged apart from each other by a distance equal to an average film thickness of the layer or more in at least a surface and surface vicinity region of the layer, wherein the surface and surface vicinity region between the groups contain substantially no metal, the layer comprises as a main component a material which has resistivity higher than resistivity of the particles, the adjacent two particles are distinct crystalline particulates arranged to be separated from others in a range of 5 nm or less, or to be just in contact with another, and the size of the adjacent two particle in diameter are smaller than the average film thickness of the layer and one of the adjacent two particles is arranged to be nearer to the cathode electrode than the other particle.