An in-cell touch display panel device includes an upper substrate, a lower substrate, and a display controlling and sensing structure layer including a data line sub-layer and a scan line sub-layer. The data line sub-layer has plural data lines and plural first dashed conductor lines, each first dashed conductor line being formed by continuing plural first conductor segments. The scan line sub-layer has plural scan lines and plural second dashed conductor lines, each second dashed conductor line being formed by continuing plural second conductor segments. The data lines are disposed at positions identical to those of the second dashed conductor lines, and the first dashed conductor lines are disposed at positions identical to those of the scan lines, so as to form a touch sensing pattern structure by using conductor parts to selectively connect the first dashed conductor lines and the second dashed conductor lines.