a touch substrate and a display device are disclosed . the touch substrate includes a plurality of first electrodes and second electrodes disposed as intersecting each other , wherein the first electrodes and the second electrodes contact each other at intersecting positions and form heterojunction therein . the touch substrate of the invention takes advantage of unidirectional conductive feature of the heterojunction to prevent the interference between the first electrodes and the second electrodes , thereby guaranteeing the good performance of the touch substrate .