Display substrate and display device

A display substrate, comprising:

• a base substrate;
• a plurality of pixel units on the base substrate, wherein each of the plurality of pixel units comprises a plurality of sub-pixels, the plurality of pixel units are arranged in an array in a first direction and a second direction on the base substrate, at least one of the plurality of sub-pixels comprises a light-emitting element and a pixel driving circuit configured to drive the light-emitting element, the pixel driving circuit comprises a switching transistor and a sensing transistor, the switching transistor comprises a first gate, the sensing transistor comprises a third gate, and the first direction intersects with the second direction;
• a first scanning signal line on the base substrate, wherein the first scanning signal line is configured to supply a first scanning signal to a first plurality of the pixel units arranged in the first direction;
• a second scanning signal line on the base substrate, wherein the second scanning signal line is configured to supply a second scanning signal to a second plurality of the pixel units arranged in the first direction;
• at least one data line on the base substrate, wherein the at least one data line is configured to supply a data signal to a plurality of the pixel units arranged in the second direction, and the at least one data line extends in the second direction;
• and
• a sensing signal line on the base substrate, wherein the sensing signal line is configured to supply a sensing signal to the plurality of pixel units arranged in the second direction, and the sensing signal line extends in the second direction,
• wherein the first scanning signal line comprises a plurality of first sub scanning signal lines, the plurality of first sub scanning signal lines extend in the first direction;
• and the second scanning signal line comprises a plurality of fourth sub scanning signal lines, and the plurality of fourth sub scanning signal lines extend in the first direction,
• wherein two adjacent first sub scanning signal lines are spaced in a first region, an orthographic projection of the sensing signal line on the base substrate and an orthographic projection of the at least one data line on the base substrate do not overlap with an orthographic projection of the plurality of first sub scanning signal lines on the base substrate, and the orthographic projection of the sensing signal line on the base substrate and the orthographic projection of the at least one data line on the base substrate extend through an orthographic projection of the first region on the base substrate;
• and two adjacent fourth sub scanning signal lines are spaced in a second region, the orthographic projection of the sensing signal line on the base substrate and the orthographic projection of the at least one data line on the base substrate do not overlap with an orthographic projection of the plurality of fourth sub scanning signal lines on the base substrate, and the orthographic projection of the sensing signal line on the base substrate and the orthographic projection of the at least one data line on the base substrate extend through an orthographic projection of the second region on the base substrate, and
• wherein the first sub scanning signal line and the first gate are spaced in the second direction, and the fourth sub scanning signal line and the third gate are spaced in the second direction.