Touch device and touch display panel

A touch display panel, comprising:

• a first substrate and a second substrate, being parallel to each other, the first substrate having a surface facing the second substrate, the surface of the first substrate defining a plurality of sensing regions, and each sensing region defining a plurality of displaying regions arranged as a matrix formation and a light-shielding region disposed between the displaying regions;
• a liquid crystal layer, disposed between the first substrate and the second substrate;
• a patterned sensing electrode structure, disposed on the surface of the first substrate, and the patterned sensing electrode structure corresponding to the light-shielding region and exposing the displaying regions;
• a first insulating layer, covering the surface of the first substrate and the patterned sensing electrode structure;
• and
• a patterned common electrode layer, disposed on the first insulating layer, the patterned common electrode layer comprising a plurality of electrode portions corresponding to the displaying regions and a plurality of connecting portions, the connecting portions being disposed between the adjacent electrode portions and electrically connected to the electrode portions.