Touch sensor and display apparatus

A touch sensor and a display apparatus are disclosed. The touch sensor includes: first touch electrodes, second touch electrodes, and a first crack blocking ring (27; 29). The touch sensor includes an opening region, and a transitional region and a touch functional region sequentially laid out from a center of the opening region; the center of the opening region and a center of the touch sensor do not coincide; the touch functional region surrounds the transitional region; the plurality of first touch electrodes and the plurality of second touch electrodes are positioned in the touch functional region; the plurality of first touch sub-electrodes and the plurality of second touch sub-electrodes integrally at least partially surround the opening region; and the first crack blocking ring is positioned in the transitional region and at least partially surrounds the opening region.