This electronic device is provided with an electronic device body, and a protective sheet that protects the surface of the electronic device body. The protective sheet comprises a multilayer structure having at least one of each of a substrate (X), a layer (Y) and a layer (Z). The layer (Y) contains aluminum atoms. The layer (Z) contains a polymer (E) containing monomeric units having phosphorus atoms. In at least one set of the layer (Y) and the layer (Z), said layers are laminated adjacent to one another. The electronic device is suitable for maintaining gas barrier properties of the protective sheet at a high level even when subjected to physical stress.