Display panel and display device

1. A display panel, comprising:

a display region;

a non-display region surrounding the display region; and

at least one notch;

wherein:

a plurality of data lines is disposed in the display region and extends along a first direction;

an edge of the display panel recesses in a second direction toward an inside of the display region to form the at least one notch, the second direction intersecting the first direction;

the display region includes a first display region and second display regions, the second display regions including a first second-display region and a second second-display region;

the at least one notch and the first display region are disposed between the first and second second-display regions in the first direction;

the at least one notch and the first display region are adjacent to each other in the second direction;

the plurality of data lines includes first data lines in each second display region separated by the at least one notch;

along the first direction, connection lines are disposed surrounding the at least one notch, and each connection line connects two of the first data lines in a same column and on two sides of the at least one notch; and

at least a portion of the connection lines includes a first segment disposed in the first display region.

2. The display panel according to claim 1 , further including a display layer, wherein:

the display layer includes a plurality of light-emitting units in the display region; and

in the first display region, the first segment and the plurality of light-emitting units overlap and are insulated from each other.

3. The display panel according to claim 2 , further including a plurality of pixel circuits, wherein:

the plurality of pixel circuits is electrically connected to the plurality of light-emitting units in a one-to-one correspondence;

each of the plurality of pixel circuits and a corresponding one of the plurality of light-emitting units have a relative position in a direction perpendicular to the display panel;

the plurality of pixel circuits includes pixel circuits in the first display region and pixel circuits in the second display region; and

at least a portion of the pixel circuits in the first display region is shifted toward a side away from the at least one notch in the second direction with respect to the plurality of light-emitting units.

4. The display panel according to claim 3 , wherein:

the plurality of pixel circuits includes size-unadjusted pixel circuits and size-adjusted pixel circuits;

in the second direction, a length of the size-unadjusted pixel circuits is larger than a length of the size-adjusted pixel circuits; and

at least a portion of the pixel circuits in the first display region includes the size-adjusted pixel circuits.

5. The display panel according to claim 4 , wherein:

the plurality of pixel circuits includes switch transistors; and

a distance between the switch transistors in a size-adjusted pixel circuit is smaller than a distance between the switch transistors in a size-unadjusted pixel circuit.

6. The display panel according to claim 4 , wherein:

the plurality of pixel circuits includes switch transistors; and

a size of the switch transistors in a size-adjusted pixel circuit is smaller than a size of the switch transistors in a size-unadjusted pixel circuit.

7. The display panel according to claim 4 , wherein:

the plurality of pixel circuits further includes driving transistors; and

a size of the driving transistors in a size-adjusted pixel circuit is smaller than a size of the driving transistors in a size-unadjusted pixel circuit.

8. The display panel according to claim 4 , wherein:

the plurality of pixel circuits includes switch transistors;

the switch transistors include compensation transistors and initialization transistors;

in the size-adjusted pixel circuits, at least one type among the compensation transistors and the initialization transistors are single-gate transistors; and

in the size-unadjusted pixel circuits, the compensation transistors and the initialization transistors are dual-gate transistors.

9. The display panel according to claim 4 , wherein:

the plurality of data lines includes second data lines;

a portion of the plurality of light-emitting units driven by one second data line emits light with a same color; and

a portion of the pixel circuits in the first display region electrically connected to a portion of the plurality of light-emitting units driven by the second data lines are the size-adjusted pixel circuits.

10. The display panel according to claim 4 , wherein:

the plurality of light-emitting units includes red light-emitting units, green light-emitting units, and blue light-emitting units; and

in the first display region, at least a portion of the plurality of light-emitting units for at least one color is electrically connected to the size-adjusted pixel circuits.

11. The display panel according to claim 10 , wherein at least a portion of the blue light-emitting units in the first display region is electrically connected to the size-adjusted pixel circuits.

12. The display panel according to claim 10 , wherein:

the length of the size-unadjusted pixel circuits in the second direction is L;

in the first display region, a length of a portion of the size-adjusted pixel circuits electrically connected to the red light-emitting units in the second direction is L 1 , a length of a portion of the size-adjusted pixel circuits electrically connected to the green light-emitting units in the second direction is L 2 , and a length of a portion of the size-adjusted pixel circuits electrically connected to the blue light-emitting units in the second direction is L 3 ; and

L 1 <L, L 2 <L, and L 3 <L.

13. The display panel according to claim 12 , wherein:

L 1 <L 2 <L 3 .

14. The display panel according to claim 4 , wherein:

the first display region includes a first region and a second region;

in the second direction, the at least one notch, the first region, and the second region are disposed sequentially;

at least a portion of pixel circuits in the first region includes the size-adjusted pixel circuits; and

pixel circuits in the second region include the size-unadjusted pixel circuits.

15. The display panel according to claim 3 , wherein:

in the first display region, each of the plurality of light-emitting units includes a first light-emitting unit and a second light-emitting unit adjacent to each other in the second direction;

a pixel circuit corresponding to one of the plurality of light-emitting units includes a first pixel circuit electrically connected to the first light-emitting unit and a second pixel circuit electrically connected to the second light-emitting unit;

the first pixel circuit and the second pixel circuit are symmetric to each other about a symmetry axis extending in the first direction;

the display panel further includes power lines extending in the first direction;

the pixel circuits include driving transistors;

the power lines are electrically connected to the driving transistors for providing driving currents; and

in a pixel circuit for one of the plurality of light-emitting units, the driving transistor of the first pixel circuit and the driving transistor of the second pixel circuit are electrically connected to one same power line.

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

the display panel includes:

a display region;

a non-display region surrounding the display region; and

at least one notch;

wherein,

a plurality of data lines is disposed in the display region and extends along a first direction;

an edge of the display panel recesses in a second direction toward an inside of the display region to form the at least one notch, the second direction intersecting the first direction;

the display region includes a first display region and second display regions, the second display regions including a first second-display region and a second second-display region;

the at least one notch and the first display region are disposed between the first and second second-display regions in the first direction;

the at least one notch and the first display region are adjacent to each other in the second direction;

the plurality of data lines includes first data lines in each second display region separated by the at least one notch;

along the first direction, connection lines are disposed surrounding the at least one notch, and each connection line connects two of the first data lines in a same column and on two sides of the at least one notch; and

at least a portion of the connection lines includes a first segment disposed in the first display region.

17. The display device according to claim 16 , further including a display layer, wherein:

the display layer includes a plurality of light-emitting units in the display region; and

in the first display region, the first segment and the plurality of light-emitting units overlap and are insulated from each other.

18. The display device according to claim 17 , further including a plurality of pixel circuits, wherein:

the plurality of pixel circuits is electrically connected to the plurality of light-emitting units in a one-to-one correspondence;

each of the plurality of pixel circuits and a corresponding one of the plurality of light-emitting units have a relative position in a direction perpendicular to the display panel;

the plurality of pixel circuits includes pixel circuits in the first display region and pixel circuits in the second display region; and

at least a portion of the pixel circuits in the first display region is shifted toward a side away from the at least one notch in the second direction with respect to the plurality of light-emitting units.

19. The display device according to claim 18 , wherein:

the plurality of pixel circuits includes size-unadjusted pixel circuits and size-adjusted pixel circuits;

in the second direction, a length of the size-unadjusted pixel circuits is larger than a length of the size-adjusted pixel circuits; and

at least a portion of the pixel circuits in the first display region includes the size-adjusted pixel circuits.

20. The display device according to claim 18 , wherein:

in the first display region, each of the plurality of light-emitting units includes a first light-emitting unit and a second light-emitting unit adjacent to each other in the second direction;

a pixel circuit corresponding to one of the plurality of light-emitting units includes a first pixel circuit electrically connected to the first light-emitting unit and a second pixel circuit electrically connected to the second light-emitting unit;

the first pixel circuit and the second pixel circuit are symmetric to each other about a symmetry axis extending in the first direction;

the display panel further includes power lines extending in the first direction;

the pixel circuits include driving transistors;

the power lines are electrically connected to the driving transistors for providing driving currents; and

in a pixel circuit for one of the plurality of light-emitting units, the driving transistor of the first pixel circuit and the driving transistor of the second pixel circuit are electrically connected to one same power line.