Display substrate, preparation method thereof and display device

[0001] A display substrate and its fabrication method, and a display device thereof. The display substrate includes a plurality of first circuit regions (210) and a plurality of second circuit regions (220) alternately arranged along a second direction. The first circuit regions (210) include a plurality of repeating units (RU) and a plurality of blank units (KB) alternately arranged along the first direction. The repeating units (RU) include a plurality of circuit units (Q). The circuit units (Q) include a pixel driving circuit and a data signal line (DataI) connected to the pixel driving circuit. The second circuit regions (220) include at least one gate unit (G). The gate unit (Q) includes at least one gate driving circuit. The orthographic projection of the gate driving circuit on the plane of the display substrate does not overlap with the orthographic projection of the data signal line (DataI) on the plane of the display substrate.