An array substrate, comprising: a base substrate; a plurality of pixel units arranged in an array on a base substrate, each pixel unit including an open-circuit repair structure, an organic light-emitting diode (OLED), and a pixel driving circuit, wherein the open-circuit repair structure includes a repair line; and an interlayer insulating layer, a passivation layer and a planarization layer that are sequentially stacked between an anode of the OLED in a pixel unit to be repaired of the plurality of pixel units and the repair line in an adjacent pixel unit adjacent to the pixel unit to be repaired, wherein the pixel driving circuit in each pixel unit includes a driving thin film transistor; an orthographic projection of the repair line in the pixel unit to be repaired on the base substrate partially overlaps with an orthographic projection of the anode of the OLED in the pixel unit to be repaired on the base substrate, and the repair line in the adjacent pixel unit is coupled to a drain of the driving thin film transistor in the adjacent pixel unit; the pixel unit to be repaired and the adjacent pixel unit are pixel units in adjacent columns and a same row, the repair line in the pixel unit to be repaired and a gate of the driving thin film transistor in the pixel unit to be repaired are electrically insulated and disposed in a same layer, and the interlayer insulating layer is disposed between the repair line in the pixel unit to be repaired and the drain of the driving thin film transistor in the pixel unit to be repaired; characterized in that: a groove is formed in the planarization layer, and is located in a region where the orthographic projection of the repair line in the pixel unit to be repaired on the base substrate partially overlaps with the orthographic projection of the anode of the OLED in the pixel unit to be repaired on the base substrate, and a portion of the anode of the OLED in the pixel unit to be repaired is filled in the groove;and a groove depth of the groove is less than or equal to a total thickness of the passivation layer and the planarization layer, so that the repair line in the pixel unit to be repaired and the anode of the OLED in the pixel unit to be repaired are not coupled by the groove before the pixel unit to be repaired is repaired. a base substrate; a plurality of pixel units arranged in an array on a base substrate, each pixel unit including an open-circuit repair structure, an organic light-emitting diode (OLED), and a pixel driving circuit, wherein the open-circuit repair structure includes a repair line; and an interlayer insulating layer, a passivation layer and a planarization layer that are sequentially stacked between an anode of the OLED in a pixel unit to be repaired of the plurality of pixel units and the repair line in an adjacent pixel unit adjacent to the pixel unit to be repaired, wherein the pixel driving circuit in each pixel unit includes a driving thin film transistor; an orthographic projection of the repair line in the pixel unit to be repaired on the base substrate partially overlaps with an orthographic projection of the anode of the OLED in the pixel unit to be repaired on the base substrate, and the repair line in the adjacent pixel unit is coupled to a drain of the driving thin film transistor in the adjacent pixel unit; the pixel unit to be repaired and the adjacent pixel unit are pixel units in adjacent columns and a same row, the repair line in the pixel unit to be repaired and a gate of the driving thin film transistor in the pixel unit to be repaired are electrically insulated and disposed in a same layer, and the interlayer insulating layer is disposed between the repair line in the pixel unit to be repaired and the drain of the driving thin film transistor in the pixel unit to be repaired; characterized in that: a groove is formed in the planarization layer, and is located in a region where the orthographic projection of the repair line in the pixel unit to be repaired on the base substrate partially overlaps with the orthographic projection of the anode of the OLED in the pixel unit to be repaired on the base substrate, and a portion of the anode of the OLED in the pixel unit to be repaired is filled in the groove;and a groove depth of the groove is less than or equal to a total thickness of the passivation layer and the planarization layer, so that the repair line in the pixel unit to be repaired and the anode of the OLED in the pixel unit to be repaired are not coupled by the groove before the pixel unit to be repaired is repaired. a groove is formed in the planarization layer, and is located in a region where the orthographic projection of the repair line in the pixel unit to be repaired on the base substrate partially overlaps with the orthographic projection of the anode of the OLED in the pixel unit to be repaired on the base substrate, and a portion of the anode of the OLED in the pixel unit to be repaired is filled in the groove;and a groove depth of the groove is less than or equal to a total thickness of the passivation layer and the planarization layer, so that the repair line in the pixel unit to be repaired and the anode of the OLED in the pixel unit to be repaired are not coupled by the groove before the pixel unit to be repaired is repaired.