To prepare an electrically conductive antireflection film which can attain reduction of reflected light and improvement of contrast, has excellent ability of antistatic effect and electromagnetic wave shielding and further is excellent in heat resistance and to provide a glass panel for a cathode ray tube on an outer surface of a face part of which the electrically conductive antireflection film is deposited.
The electrically conductive antireflection film contains four layers formed on a base body and is constituted by providing (in order starting from the base body side), a first layer which is a transparent layer having 1.4 to 2.3 refractive index and 0.5 to 250 nm geometrical thickness, a second layer which is a colored electrically conductive layer consisting essentially of a transition metal nitride and has 1.1 to 3.0 refractive index and 0.5 to 40 nm geometrical thickness, a third layer which is a transparent layer of 1.4 to 2.3 refractive index and has 0.5 to 100 nm geometrical thickness and further an external layer which is a transparent layer of 1.4 to 1.6 refractive index and has 50 to 140 nm geometrical thickness outside the third layer.
IMAMURA TSUTOMU
KANAI TOSHIMASA
