Patent ID: 8249487
Filing Date: 2012-08-21
Classification: B82Y,G03G,H01J

Abstract:
1. An electron emitting element, comprising: an electrode substrate; a thin-film electrode; and an electron acceleration layer sandwiched between the electrode substrate and the thin-film electrode, as a result of a voltage applied between the electrode substrate and the thin-film electrode, electrons being accelerated in the electron acceleration layer so as to be emitted from the thin-film electrode, the electron acceleration layer including (i) insulating fine particles and (ii) at least one of (a) conductive fine particles having an average particle diameter that is smaller than an average particle diameter of the insulating fine particles and (b) a basic dispersant, the electron acceleration layer having a surface roughness of 0.2 μm or less in centerline average roughness (Ra), and the thin-film electrode having a film thickness of 100 nm or less.