INK COMPOSITION, INK-COMPOSITION PRODUCTION METHOD, TRANSPARENT CONDUCTIVE FILM, AND TRANSPARENT-CONDUCTIVE-FILM PRODUCTION METHOD

摘要

[Problem] To provide: an ink composition with which screen printing can be used to form a transparent conductive film exhibiting excellent conductivity and transmittance; an ink-composition production method; a transparent conductive film; and a transparent-conductive-film production method. [Solution] This ink composition is characterized by being obtained by forming an ink from a solution obtained by mixing 100 parts by weight of a PEDOT/PSS aqueous solution, 300 or fewer parts by weight of a mixed alcohol, and a silane coupling agent. This ink composition is further characterized in that: the concentration of the PEDOT/PSS aqueous solution satisfies relational expression (1), namely 1.3 wt% <= PEDOT/PSS aqueous solution < 3.5 wt%; and the mixed alcohol includes a low-viscosity solvent and a high-viscosity alcohol. It is preferable that the low-viscosity solvent in this ink composition be a lower alcohol. Furthermore, it is preferable that the high-viscosity alcohol in this ink composition be glycol.