Display substrate and display device

A display substrate, comprising:

• a base substrate;
• a plurality of pixel units arranged on the base substrate, wherein the plurality of pixel units are arranged in an array in a first direction and a second direction, at least one pixel unit comprises a plurality of sub-pixels, and at least one sub-pixel comprises a light emitting element and a pixel driving circuit for driving the light emitting element;
• a semiconductor layer arranged on the base substrate;
• a first conductive layer arranged on a side of the semiconductor layer close to the base substrate;
• a second conductive layer arranged on a side of the semiconductor layer away from the base substrate;
• and
• a pixel definition layer arranged on a side of the second conductive layer away from the base substrate, wherein the pixel definition layer comprises a plurality of openings for defining light emitting regions of the plurality of sub-pixels,
• wherein the pixel driving circuit comprises a sensing transistor, a storage capacitance and a capacitance wire, the sensing transistor comprises a source electrode and a drain electrode, the storage capacitance comprises a first capacitance electrode and a second capacitance electrode arranged opposite to each other, and the capacitance wire is configured to electrically connect one of the source electrode and the drain electrode of the sensing transistor with the second capacitance electrode;
• wherein the source electrode and the drain electrode of the sensing transistor are located in the second conductive layer, the second capacitance electrode and the capacitance wire are located in the first conductive layer, and the capacitance wire comprises a capacitance wire body portion extending in the second direction;
• and
• wherein for one and the same sub-pixel, an orthographic projection of the capacitance wire body portion of the pixel driving circuit of the sub-pixel on the base substrate is spaced apart from an orthographic projection of the light emitting region of the sub-pixel on the base substrate;
• wherein the display substrate further comprises a data line for supplying a data signal, the data line is located in the second conductive layer, and the data line comprises a data line body portion extending in the second direction;
• and
• wherein for one and the same sub-pixel, the data line body portion of the data line configured to supply the data signal to the pixel driving circuit of the sub-pixel has an orthographic projection on the base substrate that at least partially overlaps with an orthographic projection of the capacitance wire body portion of the pixel driving circuit of the sub-pixel on the base substrate.