Patent ID: 7154216

Claim:
A flat-panel display device including a hermetic container provided with a cathode for emitting electrons and an anode electrode to be supplied with an electric potential, the flat-panel display device comprising: an anode substrate provided with the anode electrode; a cathode substrate arranged facing the anode substrate at a predetermined spacing therefrom, and provided with a layer and the cathode; and a structure comprising (a) a portion which is joined to the layer formed on a surface of the cathode substrate by a joining member, which surface is a reverse side relative to a surface facing the anode substrate, and (b) a conductive portion extending through a penetration hole in the cathode substrate and through which the electric potential is supplied to the anode electrode, wherein the structure and the cathode substrate are hermetically coupled together by joining with the joining member, the joining member comprises indium, and the layer comprises a metal.