Dispersion for preventing electrification antistatic film and image display device

Abstract

This dispersion for preventing electrification contains as a primary component high-resistance fine particles having a specific resistivity of 106 to 109Ω·cm. This dispersion is applied by a simple and easy method such as spray coating or brushing and baked to obtain an antistatic film having a reduced dependency of a resistance value on a thickness of a film and environments and having stable antistatic properties. The high-resistance fine particle is fine particle which is composed of antimony pentoxide (Sb2O5) having a pyrochlore crystal structure or has a core layer which is composed of at least one semiconducting substance selected from SnO2, In2O3, Sb2O5 and ZnO2 and a covering layer which is composed of at least one insulating substance selected from SiO2, TiO2, Al2O3 and ZrO2. An image display device which has such an antistatic film formed on the surface of an insulating member in a vacuum envelope is free from deterioration of display characteristics caused by a change of the track of electrons emitted by the application of voltage, a spark in a tube or a leakage current, and exhibits stable and good display characteristics.

Dependencies are inferred from the claim text.