A display device includes a display layer on which a display area and a non-display area adjacent to the display area are defined and a sensor layer on which a plurality of sensor units are defined. The plurality of sensor units includes a first sensor unit overlapping the display area and a second sensor unit overlapping the display area and the non-display area. The second sensor unit includes a first portion and a second portion expanded from the first portion, and the first portion has a shape that is the same as a shape of which a portion is removed from the first sensor unit, and a width of the second sensor unit in a first direction is greater than a width of the first sensor unit in the first direction.