Touch substrate and touch device

A touch substrate, comprising:

• a substrate;
• and
• at least one touch control unit on the substrate,
• wherein the touch control unit comprises:
• a first touch electrode and a second touch electrode,
• wherein the first touch electrodes have a first bus bar extending along a first direction and a first inner electrode extending from the first bus bar,
• wherein the second touch electrode has a second bus bar extending along the first direction and a second inner electrode extending from the second bus bar,
• wherein the first bus bar and the second bus bar are opposite to each other, wherein the first inner electrode and the second inner electrode are between the first bus bar and the second bus bar, and wherein the first inner electrode and the second inner electrode are alternately spaced from each other in the first direction,
• wherein each pair of adjacent first inner electrode and second inner electrode constitutes an inner electrode group, and the touch control unit comprises at least two inner electrode groups,
• wherein, within each inner electrode group, at least a portion of the first inner electrode extends toward the second inner electrode, and at least a portion of the second inner electrode extends toward the first inner electrode,
• the first inner electrode comprises a first portion, a second portion and a third portion, the first portion of the first inner electrode connected to the first bus bar and extending toward the second bus bar, the second portion of the first inner electrode extending toward the second inner electrode, and the third portion of the first inner electrode extending from the second portion of the first inner electrode,
• the second inner electrode comprises a first portion, a second portion and a third portion, the first portion of the second inner electrode connected to the second bus bar and extending toward the first bus bar, the second portion of the second inner electrode extending toward the first inner electrode and the third portion of the second inner electrode extending toward the second portion of the first inner electrode,
• wherein the third portion of the second inner electrode is between the first portion of the first inner electrode and the first portion of the second inner electrode, and wherein an extension direction of the third portion of the second inner electrode is perpendicular to both of an extension direction of the first bus bar and an extension of the second bus bar, and wherein the third portion of the first inner electrode is between the first portion of the second inner electrode and the third portion of the second inner electrode and extends toward the second portion of the second inner electrode, a projection of the second portion of the second inner electrode in the first direction extends beyond a projection of the third portion of the second inner electrode in the first direction;
• a dummy conductive portion disposed between the first inner electrode and the second inner electrode, and
• gaps between the dummy conductive portion and the first inner electrode and between the dummy conductive portion and the second inner electrode,
• wherein a width w1 of the dummy conductive portion between two adjacent inner electrode groups ranges from 100 μm to 200 μm, wherein a width w2 of the dummy conductive portion between the first bus bar and the second portion of the second inner electrode in a same inner electrode group ranges from 100 μm to 200 μm, and wherein a width w3 of the dummy conductive portion between the second bus bar and the second portion of the first inner electrode in a same inner electrode group ranges from 100 μm to 200 μm.