NOVELTY - The device has board (11) including metallizing wiring (12). The metallizing wiring comprises metallizing layer (121) and insulating layer (122). The metallizing layer contains high-melting-point metal component and low melting metal component. The high-melting-point metal component and low melting metal component are mutually diffusion-bonded. The insulating layer is formed simultaneously with metallizing layer, and covered the outer surface of metallizing layer. An electronic component is electrically connected to metallizing layer.    USE - Electronic device such as mobile telephone, computer, mobile information-technology equipment, computer periphery terminal device, electronic office equipment, communication apparatus, business use information terminal and automatic recognition apparatus, car-electronics apparatus, industrial machine, entertainment apparatus, audio equipment, video equipment and domestic electrical appliance (all claimed). Uses include but are not limited to game machine, digital camera, TV receiver, DVD player, electronic organizer, electronic dictionary, hard disc recorder, handheld terminal (PDA), video camera, printer, plasma display and radio.    ADVANTAGE - The cost reduction and size reduction of electronic device can be achieved. The electronic device which is excellent in electrochemical stability, oxidation resistance, fillability, electroconductivity, and mechanical /physical strength can be provided. The electronic device having metallizing wiring of high quality and high reliability of adhesive force and contact power with respect to board can be provided. The efficiency of electronic device can be improved. The metallizing layer excellent in electrochemical stability and oxidation resistance can be realized.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) solar cell;    (2) solar cell power generation device;    (3) LED;    (4) light emitting device;    (5) illuminating device;    (6) signaling lamp; and    (7) LCD.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the electronic device.    Board (11)    Metallizing wiring (12)    Metallizing layer (121)    Insulating layer (122)