A color filter substrate and a curved surface display device are disclosed. The technical field of display is related to. Dark stripes appearing at a position corresponding to a central line of a sub pixel region can be eliminated, and a display effect of the curved display device can be improved. The color filter substrate includes a first light shading region corresponding to a gate line and a data line of an array substrate; and a second light shading region corresponding to a central line of a sub pixel region of the array substrate. A width of the second light shading region is larger than a width of the central line of the sub pixel region.