a base substrate;

a third conductive layer, wherein the third conductive layer is arranged on a side of the base substrate, and comprises a plurality of first signal lines, wherein orthographic projections of the plurality of first signal lines on the base substrate extend in a first direction and are spaced apart in a second direction, the first direction intersects with the second direction;

a fourth conductive layer, wherein the fourth conductive layer is arranged on a side of the third conductive layer away from the base substrate, and the fourth conductive layer comprises a plurality of second signal lines, wherein orthographic projections of the plurality of the second signal lines on the base substrate extend in the first direction and are spaced apart in the second direction; wherein the plurality of the second signal lines are arranged in a one-to-one correspondence with the plurality of the first signal lines, each of the second signal lines comprises a plurality of second signal line segments, and orthographic projections, on the base substrate, of the plurality of the second signal line segments belonging to the same second signal line are spaced apart in the first direction, and the orthographic projection of the second signal line segment on the base substrate extends in the first direction; wherein the orthographic projection of each of the second signal line segments on the base substrate at least partially overlaps with the orthographic projection of a corresponding first signal line on the base substrate, and each of the second signal line segments and the corresponding first signal line are electrically connected through a via hole; and

a fifth conductive layer, wherein the fifth conductive layer is arranged on a side of the fourth conductive layer away from the base substrate, and the fifth conductive layer comprises a plurality of electrode parts, wherein each of the electrode parts is configured to form an electrode of a light emitting unit;

wherein orthographic projections, on the base substrate, of at least some electrode parts among the plurality of electrode parts are partially located in a gap between the orthographic projections, on the base substrate, of adjacent two second signal line segments in the same second signal line; and at least some of adjacent two first signal lines are electrically connected.