Display panels and display devices

1. A display panel, comprising:

a base substrate;

a display screen body disposed on the base substrate and comprising a display surface and a back surface; the display screen body being provided with a groove; an area of the display surface of the display screen body other than an area of the groove being a display area;

a plurality of data signal wires configured to transmit driving data for pixel units in the display area; wherein for pixel unit columns truncated by the groove in a first direction, the data signal wire corresponding to each pixel unit column, when extending linearly in the first direction from a data signal output terminal to the groove, resumes straight line extension after extending around an edge of the groove until reaching a position of the same pixel unit column on the other side of the groove; and

a plurality of power supply wires configured to supply an operating voltage to the pixel units in the display area; wherein for the pixel unit columns truncated by the groove in the first direction, the power supply wire corresponding to each pixel unit column, when extending linearly in the first direction to the groove, is connected to a common power bus that surrounds the groove,

wherein a cross-sectional area of a portion of the data signal wire extending around the edge of the groove is larger than a cross-sectional area of a portion of the data signal wire extending linearly,

further comprising a first metal layer, a second metal layer, and a third metal layer disposed on the base substrate and laminated with each other, and an insulating material being filled between the first metal layer and the second metal layer and filled between the second metal layer and the third metal layer,

wherein the plurality of power supply wires are disposed on the first metal layer, the common power bus is disposed on the second metal layer, and the plurality of power supply wires are connected to the common power bus via through hole,

wherein the plurality of scanning signal traces are disposed on the second metal layer, and the plurality of data signal wires are disposed on the third metal layer.

2. The display panel according to claim 1 , further comprising a peripheral circuit comprising at least one of a scan-driving circuit and a reference signal circuit.

3. The display panel according to claim 2 , wherein the scan-driving circuit comprises a plurality of scan-driving traces extending along a second direction within the display area configured to transmit scanning data for the pixel units in the display area; wherein, for pixel unit columns truncated by the groove in the second direction, the scan-driving trace corresponding to each pixel unit column, when extending linearly in the second direction from a scanning signal output terminal to the groove, resumes straight line extension after extending around an edge of the groove until reaching a position of the same pixel unit column on the other side of the groove; for pixel unit columns without being truncated by the groove in the second direction, the scan-driving trace corresponding to each pixel unit column extends linearly in the second direction.

4. The display panel according to claim 3 , wherein when extending to the groove, each scan-driving trace diverges to form at least two branches, and the branches of the scan-driving trace wrap around the edge of the groove to enclose the groove.

5. The display panel according to claim 4 , wherein a cross-sectional area of a portion of the scan-driving trace extending around the edge of the groove is larger than a cross-sectional area of a portion of the scan-driving trace extending linearly.

6. The display panel according to claim 3 , wherein the display area includes a first region and a second region, and the second region is disposed surrounding the edge of the groove and provided with no pixel unit;

wherein, portions of the plurality of data signal wires and the plurality of power supply wires extending linearly are disposed in the first region; and

portions of the common power bus, the plurality of data signal wires, the plurality of power supply wires, and the plurality of scan-driving traces extending around the edge of the groove are disposed in the second region.

7. The display panel according to claim 2 , wherein the reference signal circuit comprises a plurality of reference signal traces extending along the first direction within the display area, and the plurality of reference signal traces are broken when passing through the groove.

8. The display panel according to claim 7 , wherein a reference signal circuit bus of the reference signal circuit is disposed at an upper bottom portion and/or a lower bottom portion of the base substrate, and power is collectively supplied to the plurality of reference voltage traces through the reference signal circuit bus.

9. The display panel according to claim 1 , wherein the display screen body is provided with at least one groove.

10. The display panel according to claim 1 , wherein a distance between the first metal layer and the second metal layer is less than a distance between the second metal layer and the third metal layer, a compensating capacitance formed by the plurality of power supply wires and the plurality of scan-driving traces is greater than a compensating capacitance formed by the plurality of scan-driving traces and the plurality of data signal wires.

11. The display panel according to claim 1 , wherein an area ratio of the groove to the display area is 6:10000 to 18:10000.

12. The display panel according to claim 1 , wherein the base substrate is a glass substrate or a substrate of flexible material.

13. The display panel according to claim 1 , wherein the groove penetrates the display surface and the back surface of the display panel to form a groove on the base substrate.

14. A display device, comprising:

a display panel according to claim 1 ; and

a sensing element disposed in the groove of the display panel.

15. The display device according to claim 14 , further comprising a peripheral circuit comprising at least one of a scan-driving circuit and a reference signal circuit.

16. The display device according to claim 15 , wherein the scan-driving circuit comprises a plurality of scan-driving traces extending along a second direction within the display area configured to transmit scanning data for the pixel units in the display area; wherein, for pixel unit columns truncated by the groove in the second direction, the scan-driving trace corresponding to each pixel unit column, when extending linearly in the second direction from a scanning signal output terminal to the groove, resumes straight line extension after extending around an edge of the groove until reaching a position of the same pixel unit column on the other side of the groove; for pixel unit columns without being truncated by the groove in the second direction, the scan-driving trace corresponding to each pixel unit column extends linearly in the second direction.

17. The display device according to claim 16 , wherein when extending to the groove, each scan-driving trace diverges to form at least two branches, and the branches of the scan-driving trace wrap around the edge of the groove to enclose the groove.

18. The display device according to claim 17 , wherein a cross-sectional area of a portion of the scan-driving trace extending around the edge of the groove is larger than a cross-sectional area of a portion of the scan-driving trace extending linearly.