| 摘要 |
PROBLEM TO BE SOLVED: To provide a functional film capable of developing various functions by a coating/pressing method. SOLUTION: The functional film has a layer formed on a substrate and containing functional fine particles. Relation of a central plane average roughness SRa of the layer containing the functional particles and an average primary particle diameter r of the functional fine particles are represented by an expression r×0.14+1<SRa<r×0.25+17. The functional film includes a conductive film, a magnetic film, a ferromagnetic film, a dielectric film, a ferroelectric film, an electrochromic film, an electroluminescence film, an insulating film, a light absorbing film, a film selectively absorbing light, a reflecting film, a reflection preventing film, a catalyst film, a photocatalyst film and the like. Above all, a transparent conductive film is useful, for example, a film composed by laminating two or more functional films 2a, 2b on the substrate 1.
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