The invention discloses a touch screen, a display device and a display driving method of the display device. The touch screen comprises a display panel, a cover panel located at a bright dipping side of the display panel, a light shield layer located at one side, facing the display panel, of the cover panel and in a non-touch region of the touch screen, and a touch electrode located at one side, deviating from the cover panel, of a film layer at which the light shield layer is located; due to the fact that the light shield layer comprises a non-black light resistance layer, a low-reflectivity conducting layer and an insulating layer which are arranged on the cover panel in sequence in a stacking manner, wherein, the non-black light resistance layer can enable the touch screen to realize the design of a non-black frame, and the insulating layer can avoid the problem that the low-reflectivity conducting layer generates a short circuit with the touch electrode; the reflectivity of the low-reflectivity conducting layer is relatively low, and the low-reflectivity conducting layer can keep a good shading effect under the condition that the thickness is relatively thin, thus, the thickness of the light shield layer can be reduced on the premise of ensuring the good shading effect, and the problem of line breakage of the touch electrode can be avoided.