A display panel comprising a display area, an opening area and an isolation area between the display area and the opening area, the isolation area being at least partially arranged around the opening area, the display panel further comprising: a base substrate; a driving circuit layer comprising a thin film transistor and a storage capacitor that are formed on the base substrate and located in the display area, in which the thin film transistor comprises a gate electrode, a first gate insulating layer formed at a side of the gate electrode away from the base substrate, an interlayer dielectric layer formed at a side of the first gate insulating layer away from the base substrate, and source and drain electrodes (245, 246) formed at a side of the interlayer dielectric layer away from the base substrate; the storage capacitor comprises a first electrode plate arranged on the same layer as the gate electrode and a second electrode plate positioned between the first gate insulating layer and the interlayer dielectric layer; a first isolation column formed on the base substrate and located in the isolation area; in which the first isolation column is arranged around the opening area and comprises a first metal layer, a first insulating layer formed at a side of the first metal layer away from the base substrate, and a second insulating layer formed at a side of the first insulating layer away from the base substrate; the first metal layer is arranged on the same layer as the first electrode plate or the second electrode plate; the first insulating layer is arranged in the same layer as the first gate insulating layer; the second insulating layer is arranged on the same layer as the interlayer dielectric layer, characterized in that the first isolation column further comprises a second metal layer formed at a side of the second insulating layer away from the base substrate, the second insulating layer comprises a first portion, a second portion and a first inclined portion connecting the first portion and the second portion, a slope angle of the first inclined portion is less than 90°; the second metal layer is arranged on the same layer as the source and drain electrodes (245, 246) and is located at a side of the second portion away from the base substrate, and a notch surrounding the opening area is arranged at a side facing towards the display area and/or a side facing towards the opening area, and the second metal layer is placed in a patterned fashion on top of the second portion, and the notch is placed in the side surface of the patterned second metal layer. a base substrate; a driving circuit layer comprising a thin film transistor and a storage capacitor that are formed on the base substrate and located in the display area, in which the thin film transistor comprises a gate electrode, a first gate insulating layer formed at a side of the gate electrode away from the base substrate, an interlayer dielectric layer formed at a side of the first gate insulating layer away from the base substrate, and source and drain electrodes (245, 246) formed at a side of the interlayer dielectric layer away from the base substrate; the storage capacitor comprises a first electrode plate arranged on the same layer as the gate electrode and a second electrode plate positioned between the first gate insulating layer and the interlayer dielectric layer; a first isolation column formed on the base substrate and located in the isolation area; in which the first isolation column is arranged around the opening area and comprises a first metal layer, a first insulating layer formed at a side of the first metal layer away from the base substrate, and a second insulating layer formed at a side of the first insulating layer away from the base substrate; the first metal layer is arranged on the same layer as the first electrode plate or the second electrode plate; the first insulating layer is arranged in the same layer as the first gate insulating layer; the second insulating layer is arranged on the same layer as the interlayer dielectric layer, characterized in that the first isolation column further comprises a second metal layer formed at a side of the second insulating layer away from the base substrate, the second insulating layer comprises a first portion, a second portion and a first inclined portion connecting the first portion and the second portion, a slope angle of the first inclined portion is less than 90°; the second metal layer is arranged on the same layer as the source and drain electrodes (245, 246) and is located at a side of the second portion away from the base substrate, and a notch surrounding the opening area is arranged at a side facing towards the display area and/or a side facing towards the opening area, and the second metal layer is placed in a patterned fashion on top of the second portion, and the notch is placed in the side surface of the patterned second metal layer.