Display panel, driving method for the same, and display device
Provided in the embodiments of the present discourse are a display panel, a driving method for the same, and a display device. The display panel includes: a first shift register including a plurality of cascaded first shift units; a first signal line electrically connected to the plurality of first shift units for providing a level voltage required to be output by the first shift units; and a second signal line receiving a same level voltage as the first signal line, where at least one switch unit is connected between the second signal line and the first signal line. The display panel has a first mode, and in the first mode, the first shift units output at least two pluses within one frame, and at least a part of the switch units are turned on.
1 . A display panel, comprising:
a first shift register comprising a plurality of cascaded first shift units;
a first signal line electrically connected to the first shift units for providing a level voltage required to be output by the first shift units; and
a second signal line receiving a same level voltage as the first signal line, wherein at least one switch unit is connected between the second signal line and the first signal line;
wherein the display panel has a first mode, and in the first mode, the first shift units output at least two pluses within one frame, and at least a part of the switch units are turned on.
2 . The display panel according to claim 1 , further comprising:
a second shift register comprising a plurality of cascaded second shift units; and
a third signal line electrically connected to the second shift units for providing a level voltage required to be output by the second shift units;
wherein in the first mode, within one frame, a number of pulses output by the second shift units is less than a number of pulses output by the first shift units, and the third signal line is reused as the second signal line.
3 . The display panel according to claim 2 , wherein,
the first shift units are electrically connected to pixel circuits through light-emitting control signal lines, and the second shift units are electrically connected to the pixel circuits through scanning signal lines.
4 . The display panel according to claim 1 , wherein,
the second signal line is electrically connected only to a first signal pin and the switch units.
5 . The display panel according to claim 1 , wherein,
in the first mode, a number of pulses output by the first shift units within one frame is greater than or equal to 12.
6 . The display panel according to claim 1 , wherein,
the first signal line is electrically connected to a second signal pin; and
the display panel further comprises a display area, the display area comprises a first edge display area, a middle display area and a second edge display area arranged along a first direction, the first direction is a direction in which the plurality of first shift units are cascaded, wherein the second edge display area is located on a side of the middle display area close to the second signal pin, at least a part of the switch units are located on a side of the first edge display area in a second direction, and the second direction intersects with the first direction.
7 . The display panel according to claim 1 , wherein,
the first signal line is electrically connected to a second signal pin; and
the display panel further comprises a display area, the display area comprises a first edge display area, a middle display area and a second edge display area arranged along a first direction, the first direction is a direction in which the plurality of first shift units are cascaded, wherein the second edge display area is located on a side of the middle display area close to the second signal pin, at least a part of the switch units are located on a side of the second edge display area in a second direction, and the second direction intersects with the first direction.
8 . The display panel according to claim 1 , wherein,
the first signal line is electrically connected to the second signal line through the switch units at at least two positions.
9 . The display panel according to claim 1 , wherein,
at a position of each of the first shift units, the first signal line is electrically connected to the second signal line through one of the switch units.
10 . The display panel according to claim 1 , wherein,
each of the first shift units comprises an output transistor, an input end of the output transistor is electrically connected to the first signal line, and an output end of the output transistor is electrically connected to the pixel circuits through a driving signal line; and
an input end of the switch unit is electrically connected to the second signal line, and an output end of the switch unit is electrically connected to the input end of the output transistor.
11 . The display panel according to claim 1 , wherein,
the switch unit comprises a switch transistor, a gate of the switch transistor is electrically connected to a switch control signal line, a first electrode of the switch transistor is electrically connected to the second signal line, and a second electrode of the switch transistor is electrically connected to the first signal line.
12 . The display panel according to claim 1 , wherein,
the first signal line comprises a first high-level signal line, the second signal line comprises a second high-level signal line, the switch units comprise a first switch unit, and the second high-level signal line is electrically connected to the first high-level signal line through the first switch unit; and/or
the first signal line comprises a first low-level signal line, the second signal line comprises a second low-level signal line, the switch units comprise a second switch unit, and the second low-level signal line is electrically connected to the first low-level signal line through the second switch unit.
13 . The display panel according to claim 1 , wherein,
at least two of the switch units are connected between the second signal line and the first signal line; and
the first mode comprises a first sub-mode and a second sub-mode, a number of pulses output by the first shift units within one frame in the first sub-mode is less than a number of pulses output by the first shift units within one frame in the second sub-mode, and a number of the switch units turned on in the first sub-mode is less than a number of the switch units turned on in the second sub-mode.
14 . The display panel according to claim 1 , wherein,
a frame comprises an effective period and an idle period, and the switch units are turned off in the idle period.
15 . A driving method for a display panel, wherein the display panel comprises:
a first shift register comprising a plurality of cascaded first shift units;
a first signal line electrically connected to the first shift units for providing a level voltage required to be output by the first shift units; and
a second signal line receiving a same level voltage as the first signal line, wherein at least one switch unit is connected between the second signal line and the first signal line;
the display panel has a first mode, and the driving method comprises: in the first mode, controlling the first shift units to output at least two pulses within one frame, and controlling at least a part of the switch units to be turned on.
16 . The driving method according to claim 15 , wherein the display panel further comprises:
a second shift register comprising a plurality of cascaded second shift units; and
a third signal line electrically connected to the second shift units for providing a level voltage required to be output by the second shift units, wherein the third signal line is reused as the second signal line;
the driving method further comprises: in the first mode, controlling a number of pulses required to be output by the second shift units to be less than a number of pulses required to be output by the first shift units.
17 . The driving method according to claim 15 , wherein,
a frame comprises an effective period and an idle period, and the driving method further comprises: controlling the switch units to be turned off in the idle period.
18 . A display device, comprising a display panel, wherein the display panel comprises:
a first shift register comprising a plurality of cascaded first shift units;
a first signal line electrically connected to the first shift units for providing a level voltage required to be output by the first shift units; and
a second signal line receiving a same level voltage as the first signal line, wherein at least one switch unit is connected between the second signal line and the first signal line;
wherein the display panel has a first mode, and in the first mode, the first shift units output at least two pluses within one frame, and at least a part of the switch units are turned on.