Touch sensor, touch display, and electronic device

A touch sensor, comprising:

• a substrate;
• an electrode layer formed on the substrate and comprising a first electrode pattern comprising a plurality of first conductive units spaced from each other,
• each first conductive unit including a first connecting portion and a second connecting portion, the first and second connecting portions being disposed on opposite sides of the first conductive unit,
• each first conductive unit being bounded by an exterior boundary comprising a first connecting segment that bounds a side of the first connecting portion and a second connecting segment that bounds a side of the second connecting segment, the entire first connecting segment being characterized as having a continuously serpentine shape and including a first concave portion joining a first convex portion;
• and a bridge electrode, wherein one end of the bridge electrode connects to a first connecting portion of one of two adjacent first conductive units of the plurality of first conductive units and another end of the bridge electrode connects to a second connecting portion of a second of the two adjacent first conductive units to electrically connect the two adjacent first conductive units, the bridge electrode being characterized as having a continuously serpentine shape and a second concave portion joining a second convex portion.