A touch display device can include a substrate including a display area and a non-display area, a first touch electrode disposed on the substrate in the display area, a first touch line electrically connected to a touch pad disposed in the non-display area, a buffer layer disposed on the first touch electrode or the first touch line, a first driving transistor disposed on the buffer layer and included in a first sub-pixel overlapping the first touch electrode, a first gate line connected to the first sub-pixel, a first touch gate line disposed in parallel to the first gate line, and a first touch driving transistor disposed in the display area and controlling a connection between the first touch line and the first touch electrode.