An sensing unit including a first conductive layer including a first line portion including a first auxiliary sensing line, a second auxiliary sensing line, and a connection line, an insulating layer and a second conductive layer disposed on the insulating layer. The second conductive layer includes an electrode portion including a first sensing pattern and a second sensing pattern and a second line portion including a first sensing line overlapping the first auxiliary sensing line and connected to the first sensing pattern and a second sensing line overlapping the second auxiliary sensing line. The first sensing line is disposed between the second sensing pattern and the second sensing line, the connection line does not overlap the first auxiliary sensing line, crosses the first sensing line in a plan view, and connects the second sensing line to the second sensing pattern through contact holes defined through the insulating layer.