Sensing device substrate and display apparatus having the same

A sensing device substrate, comprising:

• a substrate;
• and
• a sensing device located on the substrate, wherein the sensing device comprises:
• a first electrode located on the substrate;
• a second electrode overlapped with the first electrode;
• a sensing layer located between the second electrode and the first electrode;
• a conductive layer overlapped with the second electrode and electrically connected to the first electrode, wherein the conductive layer has a first opening, and the first opening is overlapped with the sensing layer;
• and
• a first insulating layer located between the conductive layer and the second electrode,
• wherein the second electrode is disposed between the first electrode and the conductive layer, the sensing device comprises a first capacitance and a second capacitance, the first capacitance is comprised of the first electrode and a first portion of the second electrode that is overlapped with the sensing layer in top view, and the second capacitance is comprised of the conductive layer and a second portion of the second electrode that is not overlapped with the sensing layer and is overlapped with the conductive layer in top view.