Functional film having specific surface dispersion ratio

Abstract

An object of the present invention is to provide functional films which can exhibit a variety of functions using functional fine particles, in particular, a transparent conductive film having a low resistance value using conductive fine particles. The functional film of the present invention is a functional film comprising a support and a functional layer on at least one surface of the support, wherein the above functional layer contains functional fine particles, and a ratio (σ1/σ2) between a dispersion value (σ2) obtainable from the alignment of the functional fine particles at the front surface of the functional layer and a dispersion value (σ1) obtainable from the alignment of the functional fine particles at the opposite surface of the functional layer is from 1.2 to 1.85. Thereby, a sufficient contact of the functional fine particles is effected in the functional layer and the strength of the functional layer and the adhesiveness between the functional layer and the support become large, so that a transparent conductive film wherein conductive fine particles are used as the functional fine particles, for example, has a low electric resistance.

Dependencies are inferred from the claim text.