A display device includes an organic light emitting display panel defining a display area for displaying an image and a non-display area adjacent the display area, and including a base layer, a circuit layer on the base layer, a light emitting device layer on the circuit layer, and a thin film sealing layer on the light emitting device layer and divided into a first thin film sealing area, and a second thin film sealing area adjacent the first thin film sealing area, and a touch detection unit including a first sensor part on the first thin film sealing area of the thin film sealing layer, and a second sensor part on the second thin film sealing area of the thin film sealing layer, wherein an upper surface of the thin film sealing layer that faces the touch detection unit includes a first upper surface in the first thin film sealing area, and a second upper surface in the second thin film sealing area and protruding away from the base layer.