an image display device according to the present invention comprises a back panel on which a plurality of pixels each having a thin film electron emitter are arranged two - dimensionally , a front panel disposed opposite the back panel on which phosphor layer is formed , and a sealing frame with which the back panel and the front panel are fixed mutually to seal the plurality of pixels and the phosphor layer in a space enclosed by the back panel , the front panel , and the sealing frame , and is characterized in that double - layered signal lines each electrically connected to a group of the plurality of pixels are formed on the back panel , each of the double - layered signal lines consists of a lower - level electrode made from a silver paste and an upper - level electrode covering at least a part of the lower - level electrode laminated in this order on the back panel . the lower - level electrode is shaped e . g . by coating a groove formed in a surface of the back panel with the silver paste , and a surface of the upper - level electrode is used e . g . for an electrode of the thin film electron emitter , also . according to the configuration , the present invention reduces wiring resistance of the signal lines each electrically connected to the thin film electron emitters as well as improves planarity of each tunneling junction of the thin film electron emitters to suppress dispersion of electron emission property thereof among the pixels .