Display panel and display device
A display panel and a display device are provided. By simplifying the design of a part of a pixel drive circuit on a drive array substrate in a bending region of the display panel, the number of a drive transistor and other switching control tubes having the largest area in a partial region of the pixel drive circuit are reduced. Moreover, by removing an inorganic insulation layer having a larger stress, an organic buffer layer having a larger elastic modulus is filled. Therefore, the bending region has good bendability or foldability.
1. A display panel, comprising:
a bending region, wherein the bending region comprises a first display unit and a second display unit, and the bending region is a region of the display panel is configured to be bent at different angles along a direction of a folding axis;
wherein the first display unit comprises:
a first pixel drive unit and a first light-emitting component arranged corresponding to the first pixel drive unit, and the first pixel drive unit comprises a first drive transistor configured to drive the first light-emitting component to emit light; and
wherein the second display unit at least comprises:
a second pixel drive unit and a second light-emitting component arranged corresponding to the second pixel drive unit; and the first drive transistor is further configured to drive the second light-emitting component to emit light;
wherein the display panel comprises:
a first scan signal line arranged only in a first region of the bending region where the first display unit is located, wherein the first scan signal line is electrically connected to the first light-emitting component and the second light-emitting component that are located only in the bending region, and configured to provide a first scan signal to the first pixel drive unit and the second pixel drive unit; and
a second scan signal line only arranged in the first region of the bending region, wherein only in the bending region, the second scan signal line is electrically connected to the first light-emitting component, and configured to provide a second scan signal to the first pixel drive unit.
2. The display panel according to claim 1 , wherein the first drive transistor generates and provides a drive current to the first light-emitting component and the second light-emitting component, so that the first light-emitting component and the second light-emitting component emit light;
the first light-emitting component and the second light-emitting component have a same light-emission brightness; and
the first light-emitting component and the second light-emitting component emit light having a same color.
3. The display panel according to claim 2 , wherein the first light-emitting component is controlled by a first light-emitting control signal; the second light-emitting component is controlled by a second light-emitting control signal; and the first light-emitting control signal and the second light-emitting control signal are different pulse signals.
4. The display panel according to claim 3 , wherein the second light-emitting control signal is a low level signal when the first light-emitting control signal is a high level signal; and
the second light-emitting control signal is a high level signal when the first light-emitting control signal is a low level signal.
5. The display panel according to claim 1 , wherein the first pixel drive unit comprises a first light-emitting control transistor, wherein a gate electrode of the first light-emitting control transistor is connected to a signal terminal providing the first light-emitting control signal; a drain electrode of the first light-emitting control transistor is connected to an anode of the first light-emitting component; and a source electrode of the first light-emitting control transistor is connected to a drain electrode of the first drive transistor; and
the second pixel drive unit comprises a second light-emitting control transistor, wherein a gate electrode of the second light-emitting control transistor is connected to a signal terminal providing the second light-emitting control signal; and a drain electrode of the second light-emitting control transistor is connected to an anode of the second light-emitting component; and a source electrode of the second light-emitting control transistor is connected to the drain electrode of the first drive transistor.
6. The display panel according to claim 5 , wherein the first pixel drive unit comprises a first anode reset transistor controlled by the first scan signal; and
the second pixel drive unit comprises a second anode reset transistor controlled by the first scan signal.
7. The display panel according to claim 6 , wherein a gate electrode of the first anode reset transistor is connected to a signal terminal providing the first scan signal; a source electrode of the first anode reset transistor is connected to a signal terminal providing a reset signal; and a drain electrode of the first anode reset transistor is connected to the anode of the first light-emitting component; and
a gate electrode of the second anode reset transistor is connected to the signal terminal providing the first scan signal; a source electrode of the second anode reset transistor is connected to the signal terminal providing the reset signal; and a drain electrode of the second anode reset transistor is connected to the anode of the second light-emitting component.
8. The display panel according to claim 5 , wherein the first pixel drive unit comprises a first storage capacitor comprising a first electrode plate and a second electrode plate, wherein the first electrode plate is connected to a signal terminal providing a first constant voltage; and the second electrode plate is connected to a gate electrode of the first drive transistor; and
the second pixel drive unit comprises a second storage capacitor comprising a third electrode plate and a fourth electrode plate, the third electrode plate is connected to the signal terminal providing the first constant voltage, and the fourth electrode plate is connected to the source electrode of the second light-emitting control transistor.
9. The display panel according to claim 5 , wherein the first pixel drive unit further comprises a first gate reset transistor, wherein a gate electrode of the first gate reset transistor is connected to a signal terminal providing the first scan signal; a source electrode of the first gate reset transistor is connected to a signal terminal providing a reset signal; and a drain electrode of the first gate reset transistor is connected to a gate electrode of the first drive transistor.
10. The display panel according to claim 5 , wherein the first pixel drive unit further comprises a first data writing transistor, wherein a gate electrode of the first data writing transistor is connected to a signal terminal providing a second scan signal; a source electrode of the first data writing transistor is connected to a signal terminal providing a data voltage signal; and a drain electrode of the first data writing transistor is connected to a source electrode of the first drive transistor.
11. The display panel according to claim 1 , wherein no first scan signal line is arranged in a second region where the second display unit is located; and
the first scan signal line has a first width in a range of 3 μm-6 μm.
12. The display panel according to claim 11 , wherein no second scan signal line is arranged in the second region where the second display unit is located; and
the second scan signal line has a second width in a range of 3 μm-6 μm.
13. The display panel according to claim 12 , wherein the display panel further has a non-bending region, wherein a third scan line having a third a width is arranged in the non-bending region, and the third width is less than the first width or the second width.
14. The display panel according to claim 1 , further comprising a first insulation layer;
wherein the display panel further has a non-bending region, wherein the first insulation layer in the non-bending region comprises a first inorganic layer and a first organic layer;
in a portion of the bending region where the second display unit is located, the first insulation layer only comprises a third organic layer; and
a thickness of the third organic layer is greater than a thickness of the first organic layer.
15. The display panel according to claim 1 , wherein the first display unit is repeated in a first direction;
the second display unit is repeated in the first direction; and
the first display unit and the second display unit are alternately arranged in a second direction intersecting with the first direction.
16. The display panel according to claim 1 , wherein the display panel comprises a flexible substrate, the display panel is a flexible and bendable display panel, and has a radius of curvature ranging from 0.3 mm to 1.0 mm.
17. A display device comprising:
a display panel, comprising:
a bending region, wherein the bending region comprises a first display unit and a second display unit, and the bending region is a region of the display panel is configured to be bent at different angles along a direction of a folding axis;
wherein the first display unit comprises:
a first pixel drive unit and a first light-emitting component arranged corresponding to the first pixel drive unit, and the first pixel drive unit comprises a first drive transistor configured to drive the first light-emitting component to emit light; and
wherein the second display unit at least comprises:
a second pixel drive unit and a second light-emitting component arranged corresponding to the second pixel drive unit; and the first drive transistor is further configured to drive the second light-emitting component to emit light;
wherein the display panel comprises:
a first scan signal line arranged only in a first region of the bending region where the first display unit is located, wherein, the first scan signal line is electrically connected to the first light-emitting component and the second light-emitting component that are located only in the bending region, and configured to provide a first scan signal to the first pixel drive unit and the second pixel drive unit; and
a second scan signal line only arranged in the first region of the bending region, wherein only in the bending region, the second scan signal line is electrically connected to the first light-emitting component, and configured to provide a second scan signal to the first pixel drive unit.
18. The display panel according to claim 3 , wherein the second light-emitting control signal is a low level signal when the first light-emitting control signal is a high level signal.
19. The display panel according to claim 12 , wherein the display panel further has a non-bending region, wherein a third scan line having a third a width is arranged in the non-bending region, and the third width is less than the first width.