A liquid crystal display device including: a first substrate including a pixel region and a fan-out unit on a periphery of the pixel region, the pixel region including pixels; gate lines disposed on the first substrate; data lines disposed on the first substrate to intersect the gate lines, the data lines being insulated from the gate lines; a data fan-out line extending from one of the data lines to be disposed in the fan-out unit; a data pad line disposed in the fan-out unit and electrically connected to a driving integrated circuit; a second substrate opposing the first substrate; and a sealant bonding the first substrate to the second substrate. The data fan-out line overlaps the data pad line between the pixel region and the sealant.