Display panel and display device

1 . A display panel, comprising a scan circuit, a first signal line, and an electrostatic protection unit, wherein

the scan circuit comprises a plurality of shift registers, wherein the plurality of shift registers are arranged along a first direction and cascaded;

the first signal line is connected to the scan circuit and provides a signal to the scan circuit;

the scan circuit and the first signal line are both located in a display region; and

the electrostatic protection unit is located in the display region and electrically connected to the first signal line.

2 . The display panel according to claim 1 , wherein the first signal line extends along the first direction.

3 . The display panel according to claim 1 , wherein

at least a portion of the electrostatic protection unit is located on at least one side of the plurality of shift registers along a second direction,

wherein the second direction intersects the first direction and is parallel to a plane of the display panel.

4 . The display panel according to claim 1 , wherein

at least a portion of the electrostatic protection unit is located on at least one side of the plurality of shift registers along the first direction; and

the plurality of shift registers comprise a first shift register and a second shift register, wherein

along the first direction, the first shift register is located between the electrostatic protection unit and the second shift register and is adjacent to the electrostatic protection unit; and

along the first direction, a width of the first shift register is smaller than a width of the second shift register.

5 . The display panel according to claim 4 , wherein

the first shift register and the second shift register each comprise a plurality of transistors; and

a width-to-length ratio of at least a portion of transistors in the first shift register is smaller than a width-to-length ratio of at least a portion of transistors in the second shift register.

6 . The display panel according to claim 1 , wherein

at least a portion of the electrostatic protection unit is located on at least one side of the plurality of shift registers along a second direction;

at least a portion of the electrostatic protection unit is located on at least one side of the plurality of shift registers along the first direction, wherein the second direction intersects the first direction and is parallel to a plane of the display panel;

the electrostatic protection unit located on the at least one side of the plurality of shift registers along the first direction is a first electrostatic protection unit;

the electrostatic protection unit located on the at least one side of the plurality of shift registers along the second direction is a second electrostatic protection unit; and

a width of the first electrostatic protection unit along the first direction is not equal to a width of the second electrostatic protection unit along the first direction, or a width of the second electrostatic protection unit along the second direction is not equal to a width of the first electrostatic protection unit along the second direction.

7 . The display panel according to claim 1 , wherein

the plurality of shift registers comprise a first module and a second module arranged along a second direction, wherein

the first module and the second module are electrically connected through at least a first wiring, at least a portion of the electrostatic protection unit is located between the first module and the second module, and the second direction intersects the first direction and is parallel to a plane of the display panel; or

at least a portion of the electrostatic protection unit comprises a first unit and a second unit, wherein

the first unit and the second unit are electrically connected and respectively located on opposite sides of the first signal line along a second direction, and the second direction intersects the first direction and is parallel to a light-emitting surface of the display panel.

8 . The display panel according to claim 1 , wherein

the first signal line comprises a first sub-signal line and a second sub-signal line, and the electrostatic protection unit comprises a first electrostatic protection unit and a second electrostatic protection unit, wherein

the first electrostatic protection unit is electrically connected to the first sub-signal line, and the second electrostatic protection unit is electrically connected to the second sub-signal line;

along a second direction, the first electrostatic protection unit and the second electrostatic protection unit are located on a same side of the first sub-signal line and the second sub-signal line; and

along the second direction, a distance between the first electrostatic protection unit and the first sub-signal line is less than or equal to a distance between the second electrostatic protection unit and the first sub-signal line; or

the first signal line comprises a first sub-signal line and a second sub-signal line, wherein

along a second direction, the first sub-signal line is located on a first side of the plurality of shift registers, and the second sub-signal line is located on a second side of the plurality of shift registers, wherein the second direction intersects the first direction; and

the electrostatic protection unit connected to the first sub-signal line is located on the first side of the plurality of shift registers, and the electrostatic protection unit connected to the second sub-signal line is located on the second side of the plurality of shift registers; or

at least two electrostatic protection units are located on a same side of the first signal line along a second direction, the second direction intersecting the first direction, and the at least two electrostatic protection units located on the same side of the first signal line along the second direction are respectively connected to different first signal lines.

9 . The display panel according to claim 1 , wherein the first signal line comprises a first type signal line and a second type signal line, wherein

the first type signal line receives a fixed potential signal, and the second type signal line receives a non-fixed potential signal; and

a number of electrostatic protection units connected to at least one of the first type signal lines is n 1 , and a number of electrostatic protection units connected to at least one of the second type signal lines is n 2 , wherein n 1 <n 2 .

10 . The display panel according to claim 9 , wherein n 1 =0.

11 . The display panel according to claim 1 , further comprising: pixel driving circuits arranged in an array, and light-emitting elements connected to the pixel driving circuits, wherein

the display region comprises a first region, and a second region located on at least one side of the first region along a second direction, wherein the second direction intersects the first direction and is parallel to a plane of the display panel;

the pixel driving circuits are located in the first region, and the light-emitting elements are located in both the first region and the second region; and

the scan circuit and the electrostatic protection unit are located in the second region.

12 . The display panel according to claim 11 , wherein the first signal line comprises a first sub-signal line and a second sub-signal line, wherein

in the second region, along the second direction, the first sub-signal line is located between the second sub-signal line and an edge of the display panel;

the first sub-signal line is capable of receiving a non-fixed potential signal; and

a number of electrostatic protection units connected to the first sub-signal line is n 01 , and a number of electrostatic protection units connected to the second sub-signal line is n 02 , wherein n 01 >n 02 .

13 . The display panel according to claim 12 , wherein

the second sub-signal line comprises a fixed potential signal line and a non-fixed potential signal line; and

a number of electrostatic protection units connected to the fixed potential signal line is less than a number of electrostatic protection units connected to the non-fixed potential signal line.

14 . The display panel according to claim 12 , wherein

the first sub-signal line is a startup trigger signal line, and the startup trigger signal line is configured to transmit a control signal to a first stage shift register; and

the second sub-signal line is at least one of a first voltage signal line, a second voltage signal line, a first clock signal line, a second clock signal line, and a control signal line, wherein

the first voltage signal line and the second voltage signal line are configured to transmit a power supply voltage signal to the plurality of shift registers,

the first clock signal line and the second clock signal line are configured to transmit a clock signal to the plurality of shift registers, and

the control signal line is configured to transmit a ramp signal to the plurality of shift registers.

15 . The display panel according to claim 12 , wherein

the electrostatic protection units connected to the first sub-signal line are located on a side of the plurality of shift registers away from the first region, and the electrostatic protection units connected to at least one second sub-signal line are located on at least one side of the plurality of shift registers along the first direction; or

along the second direction, the electrostatic protection units connected to the first sub-signal line and the electrostatic protection units connected to the second sub-signal line are both located on a side of the plurality of shift registers away from the first region, and along the first direction, the electrostatic protection units connected to the second sub-signal line are located between the electrostatic protection units connected to the first sub-signal line.

16 . The display panel according to claim 12 , wherein

the scan circuit comprises N stages of shift registers, wherein N≥3;

the display panel comprises a first edge and a second edge, wherein

the first edge and the second edge are oppositely arranged along the first direction, a first stage shift register is adjacent to the first edge, and an Nth stage shift register is adjacent to the second edge; and

the electrostatic protection units connected to the first sub-signal line comprise: a first electrostatic protection unit, and a second electrostatic protection unit, wherein

along the first direction, a distance between the first electrostatic protection unit and the first edge is less than a distance between a second stage shift register and the first edge, and a distance between the second electrostatic protection unit and the second edge is less than a distance between an (N−1)th stage shift register and the second edge.

17 . The display panel according to claim 16 , wherein,

along the first direction or the second direction, the first electrostatic protection unit is adjacent to the first stage shift register or the second stage shift register, and the second electrostatic protection unit is adjacent to the Nth stage shift register or the (N−1)th stage shift register.

18 . The display panel according to claim 1 , further comprising: pixel driving circuits arranged in an array, and light-emitting elements connected to the pixel driving circuits, wherein

the display region comprises: a first region, and a second region located on at least one side of the first region along a second direction, wherein the second direction intersects the first direction and is parallel to a plane of the display panel;

the pixel driving circuits are located in the first region, and the light-emitting elements are located in both the first region and the second region; and

the scan circuit and the electrostatic protection unit are located in the first region.

19 . The display panel according to claim 18 , wherein

the pixel driving circuits arranged in an array comprise: a plurality of pixel driving circuit rows arranged along the first direction, and a plurality of pixel driving circuit columns arranged along the second direction, a first spacing being provided between adjacent pixel driving circuit columns, wherein

the plurality of shift registers and the electrostatic protection units are located between different pixel driving circuit rows, wherein along the first direction, the plurality of shift registers are at least partially non-overlapping with the first spacing, and/or the electrostatic protection unit is at least partially non-overlapping with the first spacing; or

along the first direction, the plurality of shift registers overlap with the first spacing, and/or the electrostatic protection unit overlaps with the first spacing; or

the display panel comprises a plurality of circuit units arranged in an array, wherein

the plurality of circuit units comprise at least two of the pixel driving circuits arranged along the second direction;

along the second direction, a width of the electrostatic protection unit is less than a width of the plurality of circuit units, and at least a portion of the electrostatic protection unit is located between adjacent circuit units of the plurality of circuit units; and

along the first direction, at least a portion of the electrostatic protection unit is located between adjacent shift registers of the plurality of shift registers.

20 . A display device, comprising a display panel, wherein

the display panel comprises: a scan circuit, a first signal line, and an electrostatic protection unit, wherein

the scan circuit comprises a plurality of shift registers, wherein the plurality of shift registers are arranged along a first direction and cascaded;

the first signal line is connected to the scan circuit and provides a signal to the scan circuit;

the scan circuit and the first signal line are both located in a display region; and

the electrostatic protection unit is located in the display region and electrically connected to the first signal line.