Touch substrate, touch screen, and touch display apparatus

A touch substrate, comprising:

• a base;
• a plurality of touch electrodes arranged in an array on the base;
• a plurality of signal lines disposed on a side of the plurality of touch electrodes proximate to or away from the base, the plurality of signal lines comprising a plurality of touch lines and a plurality of dummy touch lines, all of which are arranged in a same layer;
• a first insulating layer disposed between the plurality of touch electrodes and the plurality of signal lines, a plurality of first vias being provided in the first insulating layer and
• a plurality of connection lines disposed on a side of the plurality of signal lines proximate to or away from the base,
• wherein at least one of the plurality of touch electrodes is coupled to at least one of the plurality of touch lines through at least one of the plurality of first vias,
• the at least one touch line is configured to transmit touch signals,
• the at least one touch electrode is coupled to at least one of the plurality of dummy touch lines through at least one of the plurality of first vias, and
• the touch line(s) and the dummy touch line(s) to which each of the at least one touch electrode is coupled are coupled together through at least one of the plurality of connection lines.