NOVELTY - A gas-barrier film (100) is obtained by laminating a stress relaxation layer (120), a barrier layer (130), and an ultraviolet-screening layer (140) on a substrate (110). The barrier layer contains silicon oxide (I). The stress relaxation layer has inorganic layer or organic-inorganic mixture layer. The ultraviolet-screening layer contains metal oxide microparticles. The water permeability of gas-barrier film is 5x 10-4 g/(m2.day) or less, when measured based on ASTM F-1249.    USE - Gas-barrier film is used for flexible display device and solar cell module (all claimed).    ADVANTAGE - The gas-barrier film has excellent flexibility, transparency, ultraviolet-absorbing property, and crack-proof property, and is manufactured by fast process.    DETAILED DESCRIPTION - A gas-barrier film is obtained by laminating a stress relaxation layer, a barrier layer, and an ultraviolet-screening layer on a substrate. The barrier layer contains silicon oxide of formula: SiOx (I). The stress relaxation layer has inorganic layer or organic-inorganic mixture layer. The ultraviolet-screening layer contains metal oxide microparticles. The water permeability of gas-barrier film is 5x 10-4 g/(m2.day) or less, when measured based on ASTM F-1249.    x=1.5-2.5.    INDEPENDENT CLAIMS are included for the following:    (1) manufacture of gas-barrier film, which involves forming the stress relaxation layer on one side of the substrate, forming barrier layer on the stress relaxation layer, and providing ultraviolet-screening layer on the stress relaxation layer;    (2) flexible display device, which consists of the gas barrier film provided on a substrate; and    (3) solar cell module, which consists of a solar cell, a transparent front substrate containing ethylene vinyl acetate and filler for receiving sunlight, and the gas-barrier film.    DESCRIPTION OF DRAWING(S) - The drawing shows the cross-sectional view of gas-barrier film.    Gas-barrier film (100)    Substrate (110)    Stress relaxation layer (120)    Barrier layer (130)    Ultraviolet-screening layer (140)