Functional films, their use, articles having the films and processes for producing these

摘要

A functional film at least one surface of which has at least one of characteristics that (1) the surface has an unevenness that its surface roughness is from 10 A to 500 A as RMS value; (2) the surface has an unevenness whose pitch has an average value not larger than the RMS value of surface roughness; and (3) the surface comprises an oxide of an inorganic element (represented by M), and the value of [number of carbon atoms]/[number of M atoms] at the surface is 0.1 or less; an article having such a film; and processes for producing these are provided in the present invention.