Thermal print head, manufacturing method of the same, and thermal printer

A thermal print head comprising:

• a substrate having a convex part thereon;
• a wiring layer over the convex part;
• a heat storage layer over the wiring layer;
• a heating resistive part that is formed over the heat storage layer and is arranged along a main scanning direction;
• a plurality of first electrodes in contact with the heating resistive part on one side in a sub-scanning direction;
• a plurality of second electrodes in contact with the heating resistive part on another side in the sub-scanning direction;
• a plurality of openings, wherein each of the openings corresponds to a respective one of the first electrodes and to a respective one or more of the plurality of second electrodes and passes through the heating resistive part and the heat storage layer and reaches the wiring layer, and
• a plurality of connection wirings, wherein each of the connection wirings is present in a respective one of the openings,
• wherein
• the first electrodes are electrically connected to the wiring layer via the connection wirings.