A touch detection device includes a touch area including multiple driving electrodes and multiple detecting electrodes intersecting the driving electrodes, and including a first area that is flat, and a second area that extends from the first area in a first direction and is flat or bent based on a movement of a roller member, a first pad portion disposed adjacent to an edge of the touch area and including a first driving pad portion connected to multiple first driving electrodes disposed in the first area through multiple first driving lines, and a first detecting pad portion connected to multiple first detecting electrodes disposed in the first area through multiple detecting lines, and a second pad portion disposed adjacent to the edge of the touch area and including a second driving pad portion connected to multiple second driving electrodes disposed in the second area through multiple second driving lines.