Flexible display substrate and preparation method thereof

A method for preparing a flexible display substrate, comprising:

• preparing a flexible substrate;
• and
• disposing a plurality of insulated layers and a plurality of metal layers on the flexible substrate alternately,
• the disposing a plurality of insulated layers and a plurality of metal layers on the flexible substrate alternately further comprises following steps:
• disposing contact holes on an insulated layer between adjacent metal layers of the plurality of metal layers, wherein the contact holes are filled with metal;
• disposing metal line segments separated from each other and extending along substantially same direction on each of the plurality of metal layers;
• and
• connecting metal line segments in the adjacent metal layers alternately through the metal in the contact holes to form a continuous metal wire.