The present invention relates to a functional device capable of providing a functional device such as a dye-sensitized solar cell or the like, which is capable of maintaining high characteristics, and a method for manufacturing the functional device.A dye-sensitized solar cell serving as a functional device includes a transparent substrate 12a on which a transparent conductive film 13a is formed; a substrate 12b on which a conductive film 13b is formed; an electrolyte solution 16 filled between the two substrates; an inner main seal 15a composed of a first ultraviolet-curable resin so as to seal the electrolyte solution and bond the two substrates together; and an outer main seal 17a composed of a second ultraviolet-curable resin so as to bond the two substrates together outside the inner main seal. The solar cell includes an end seal plate 19 bonded to the substrate 12b with inner end seals 15b and 15c which are composed of a first ultraviolet-curable resin and which close openings of electrolyte solution injection holes 18a and 18b to seal the electrolyte solution, the electrolyte solution injection holes 18a and 18b being formed in the substrate 16b in order to fill the electrolyte solution, and an outer end seal 17b which is disposed outside the inner end seal and which is composed of a second ultraviolet-curable resin.