Gas-barrier film and method of manufacturing the same

A gas barrier film, comprising:

• an organic-inorganic hybrid coating layer comprising a cured product of a sol-type hydrolyzed composition containing tetraethoxy orthosilicate and 3-glycidoxypropyl-trimethoxysilane;
• an inorganic layer;
• and
• a protective coating layer including inorganic nanoparticles surface-modified with an organic silane, the layers being sequentially stacked on one surface or both surfaces of a base, wherein:
• the inorganic nanoparticles are at least one selected from the group consisting of alumina nanoparticles, zinc oxide nanoparticles, antimony oxide nanoparticles, titanium oxide nanoparticles, and zirconium oxide nanoparticles;
• the inorganic nanoparticles are spherical and have a diameter of 20 to 100 nm;
• and
• the organic silane is 3-glycidoxypropyltrimethoxysilane or a compound of Formula 1:
• R1mSiX4-m [Formula 1]
• wherein:
• X is the same as or different from each other, and each independently is hydrogen, halogen, an alkoxy group having 1 to 12 carbon atoms, an acyloxy group, an alkylcarbonyl group, an alkoxycarbonyl group, or N(R2)2 wherein R2 is hydrogen or an alkyl group having 1 to 12 carbon atoms;
• R1 is the same as or different from each other, and each independently represents an alkenyl group, an alkynyl group, an arylalkynyl group, an alkynylaryl group, or an alkylcarbonyl group, and has as a substituent an amino group, an amide group, an aldehyde group, a keto group, a carboxyl group, a mercapto group, a cyano group, a hydroxyl group, an alkoxy group having 1 to 12 carbon atoms, an alkoxycarbonyl group having 1 to 12 carbon atoms, a sulfonic acid, a phosphoric acid, an acryl group, a methacryl group, an epoxy group or a vinyl group;
• and
• m is an integer from 1 to 3.