abstract |
(57) [Summary] [Object] The present invention relates to an ultrafine particle film effective for preventing electrification and reflection, and in particular, can easily obtain an applied device such as an ultrafine particle film applicable to a large area and a cathode tube to which the ultrafine particle film is applied. [Structure] An ultrafine particle film is formed on a substrate 48. This ultrafine particle film is formed by arranging ultrafine particles 46 having a porous surface and irregularities, or fine particles obtained by aggregating ultrafine particles, and the multiparticulates have an antireflection function such as SiO 2. . |