Display device and touch display device

A display device comprises a display panel and a retaining wall. The display panel comprises a display surface, a back surface opposite to the display surface, and a plurality of side surfaces connected between the display surface and the back surface. The display surface defines a display area and a non-display area arranged around the display area. Wherein the retaining walls comprise an inner retaining wall and an outer retaining wall which are located in a non-display area of the display surface, at least parts of the inner retaining wall and the outer retaining wall are arranged at intervals, the inner retaining wall surrounds the display area, the outer retaining wall surrounds the inner retaining wall, the inner retaining wall is provided with a first notch, and the outer retainingwall is provided with a second notch; and the first notch and the second notch are used as glue injection ports for introducing transparent liquid glue into an area, surrounded by the inner retainingwall, of the display surfa