An active device array mother substrate including a substrate, a plurality of active device arrays, a plurality of common bus lines, at least one first transparent conductive pattern layer, and at least one second transparent conductive pattern layer is provided. The substrate has a plurality of predetermined areas, and the active device arrays are respectively disposed in the predetermined areas. The common bus lines are respectively disposed in the predetermined areas to surround the active device arrays. The first transparent conductive pattern layer is connected or coupled between adjacent two common bus lines. The second transparent conductive pattern layer is extended to the adjacent predetermined area to be connected or coupled to the adjacent common bus line.