Electrode or wiring comprising amorphous metal layer, flexible display device comprising the same and manufacturing method thereof

1. A method of manufacturing a flexible display device, the method comprising forming an electrode or a wiring on a substrate having a thickness of 1 to 500 μm,

wherein the electrode or the wiring is a multilayer structure,

wherein the multilayer structure is such that an amorphous metal layer and a crystalline metal layer are alternately stacked in a total of three or more layers, and the amorphous metal layer and the crystalline metal layer directly contact each other,

wherein the amorphous metal layer is formed by depositing two or more types of metals simultaneously on the substrate or the crystalline metal layer, or by coating a melted mixture of two or more types of metals on the substrate or the crystalline metal layer, and

wherein the two or more types of metals each have a difference in atomic numbers of three or more groups.

2. The method of claim 1 , wherein the depositing is performed under pressure of 0.001 to 700 Torr.

3. The method of claim 1 , wherein the substrate is formed of any one or two or more selected from the group consisting of polyimide, polyetherimides, polyethersulfone, polyethylene terephthalate, polybutylene terephtalate, polyethylene naphthalate, polycarbonate, polyurethane, polydimethylsiloxane, and nano cellulose.

4. The method of claim 1 , wherein the amorphous metal may be any one selected from the group consisting of FeZr, CuZr, CoTi, NiTi, FeNbAl, LaAlCu, Al—Sc, AuSi, TiCoPdZr, and MgZnCa or a mixture thereof.

5. The method of claim 1 , wherein the crystalline metal layer includes one or two or more crystalline metals selected from the group consisting of copper (Cu), molybdenum (Mo), platinum (Pt), and gold (Au).

6. The method of claim 1 , wherein the amorphous metal layer is formed by depositing two or more types of metals simultaneously on the substrate or the crystalline metal layer.