An exemplary embodiment of the present inventive concept provides a display device including: a display area where an image is displayed; a peripheral area disposed outside the display area; a hole area disposed within the display area; a hole crack detection line disposed adjacent to the hole area to surround the hole area and having a first end and a second end that is separated from the first end; a first detection line extending from the peripheral area and connected to the hole crack detection line to constitute a first closed circuit; a second detection line extending from the peripheral area and connected to the hole crack detection line to constitute a second closed circuit; and a circuit portion connected to the first detection line and the second detection line.