Shift register, gate driving circuit, display apparatus and driving method
View Patent ↗Disclosed is a shift register, a gate driving circuit, a display apparatus and a driving method, the shift register including a first input sub-circuit, configured to receive a first input signal from a first input terminal and output an output blanking output control signal; a second input sub-circuit, configured to receive a second input signal from a second input terminal and output a display output control signal; a selection sub-circuit, having a first terminal connected to the second input sub-circuit, a second terminal connected to the first input sub-circuit, and a third terminal connected to a first node, configured to control a potential of the first node according to the display output control signal and the blanking output control signal; an output sub-circuit, configured to output a composite output signal via an output terminal under control of a first node.
1 . A shift register, comprising:
a first input sub-circuit, connected to a first input signal line and coupled to a first pull-up node;
a second input sub-circuit, connected to a second input signal line and coupled to the first pull-up node; and
an output sub-circuit, configured to output an output signal under control of the first pull-up node,
wherein the second input sub-circuit comprises a first display input transistor and a second display input transistor, and an electrode of the first display input transistor is connected to an electrode of the second display input transistor,
wherein a first electrode of the first display input transistor is connected to a high level signal line, a control electrode of the first display input transistor is connected to a display input signal line or an output terminal of another shift register, and a second electrode of the first display input transistor is connected to an electrode of the second display input transistor.
2 . The shift register according to claim 1 , wherein a first electrode of the second display input transistor and a control electrode of the second display input transistor are connected with each other.
3 . The shift register according to claim 1 , wherein the second display input transistor is connected in series between the first display input transistor and a pull-up node.
4 . The shift register according to claim 1 , wherein a first electrode of the second display input transistor and a control electrode of the second display input transistor are configured to receive a turn-on signal of a high level, and a second electrode of the second display input transistor are connected to the first pull-up node.
5 . The shift register according to claim 1 , wherein a high voltage signal input by the second display input transistor and a high voltage signal input by the first display input transistor have different potentials.
6 . The shift register according to claim 1 , wherein a potential of a high voltage signal input by the second display input transistor is lower than a potential of a high voltage signal input by the first display input transistor.
7 . The shift register according to claim 1 , further comprising: a display reset sub-circuit, connected to the first pull-up node and connected to a third signal line, wherein a control terminal of the display reset sub-circuit is connected to a display reset control terminal.
8 . The shift register according to claim 1 , wherein the output sub-circuit comprises at least one shift signal output terminal and at least one pixel signal output terminal, and the shift register further comprises a pull-down control sub-circuit, connected to a pull-down node and connected to the first pull-up node; and a pull-down sub-circuit, connected to the first pull-up node and connected to the output terminal under control of the pull-down node.
9 . The shift register according to claim 1 , wherein the first input sub-circuit comprises:
a charging sub-circuit, connected to the first input signal line and connected to a first pull-up control node according to a first input signal;
a storing sub-circuit, having a terminal connected to the first pull-up control node; and
an isolating sub-circuit, connected to a first output control signal line and coupled to the first pull-up node.
10 . The shift register according to claim 9 , wherein the charging sub-circuit comprises a charging transistor, having a first electrode and/or control electrode connected to a first input terminal, and a second electrode connected to the first pull-up control node; and
the storing sub-circuit comprises a first capacitor, having a first terminal connected to the first pull-up control node; and the isolating sub-circuit comprises a first isolating transistor, wherein a control terminal of the first isolating transistor is connected to the first pull-up control node, and an electrode of the first isolating transistor is connected to the output terminal of the first input sub-circuit.
11 . The shift register according to claim 9 , wherein the charging sub-circuit comprises a charging transistor, wherein a first electrode of the charging transistor is connected to the first input signal line, a second electrode of the charging transistor is connected to an electric leakage prevention sub-circuit, and a control electrode of the charging transistor is connected to a second clock signal line.
12 . The shift register according to claim 11 , wherein the electric leakage prevention sub-circuit comprises a first electric leakage prevention transistor and a second electric leakage prevention transistor,
wherein a first electrode of the first electric leakage prevention transistor is connected to the first pull-up control node, a second electrode of the first electric leakage prevention transistor is connected to a second electrode of the charging transistor, and a control electrode of the first electric leakage prevention transistor is connected to the control electrode of the charging transistor; and a first electrode of the second electric leakage prevention transistor is connected to the first electrode of the first electric leakage prevention transistor, a second electrode of the second electric leakage prevention transistor is connected to an electric leakage prevention signal input terminal, and a control electrode of the second electric leakage prevention transistor is connected to the first pull-up control node.
13 . The shift register according to claim 9 , wherein the output sub-circuit comprises an output transistor and an output capacitor, wherein a first electrode of the output transistor is connected to an output clock signal line, a second electrode of the output transistor is connected to the output terminal, a control electrode of the output transistor is connected to the first pull-up node, a first terminal of the output capacitor is connected to the first pull-up node, and a second terminal of the output capacitor is connected the output terminal.
14 . The shift register according to claim 7 , wherein the display reset sub-circuit comprises a display reset transistor, having a first electrode connected to the first pull-up node, a control electrode connected to the display reset control terminal, and a second electrode connected to a display reset signal line.
15 . The shift register according to claim 10 , wherein a first terminal of the first capacitor is connected to a blanking pull-up control node, and a second terminal of the first capacitor is configured to receive a constant voltage value.
16 . The shift register according to claim 10 , wherein another electrode of the first isolating transistor is connected to a terminal of the first capacitor for receiving a same signal.
17 . The shift register according to claim 8 , wherein the pull-down sub-circuit comprises:
a second pull-down transistor, having a first electrode connected to a first output terminal, a second electrode connected to a sixth signal line and a control electrode connected to the pull-down node; and
a third pull-down transistor, having a first electrode connected to a second output terminal, a second electrode connected to a seventh signal line, and a control electrode connected to the pull-down node,
wherein the first output terminal is used as a shift driving signal of a gate driving circuit, and a signal outputted by the second output terminal is used as a driving signal of a pixel circuit, and the sixth signal line and the seventh signal line are different signal line.
18 . The shift register according to claim 8 , wherein the pull-down control sub-circuit further comprises a pull-down control transistor having an electrode connected to a first signal line.
19 . A shift register, comprising:
a first input sub-circuit, connected to a first input signal line and coupled to a first pull-up node;
a second input sub-circuit, connected to a second input signal line and coupled to the first pull-up node; and
an output sub-circuit, configured to output an output signal via an output terminal under control of the first pull-up node;
a display reset sub-circuit, connected to the first pull-up node and connected to a third signal line, wherein a control terminal of the display reset sub-circuit is connected to a display reset control terminal;
a pull-down control sub-circuit, configured to control a potential of a pull-down node according to the first pull-up node; and
a pull-down sub-circuit, configured to pull down the first pull-up node and the output terminal to a non-operating potential under control of the pull-down node, and comprising a pull-down control transistor having an electrode connected to a first signal line,
wherein,
the first input sub-circuit comprises a charging sub-circuit, a storing sub-circuit, and an isolating sub-circuit, wherein
the charging sub-circuit comprises a charging transistor, having a first electrode and/or control electrode connected to a first input terminal, and a second electrode connected to a blanking pull-up control node;
the storing sub-circuit comprises a first capacitor, having a first terminal connected to the blanking pull-up control node; and
the isolating sub-circuit comprises a first isolating transistor, wherein a control terminal of the first isolating transistor is connected to the blanking pull-up control node, and an electrode of the first isolating transistor is connected to the output terminal of the first input sub-circuit;
the second input sub-circuit comprises:
a display input transistor, wherein a first electrode of the display input transistor and a control electrode of the display input transistor are connected with each other, and a second electrode of the display input transistor is connected to the first pull-up node;
the output sub-circuit comprises:
a first output transistor, wherein a first electrode of the first output transistor is connected to a fourth clock signal line, a second electrode of the first output transistor is connected to a first output terminal, and a control electrode of the first output transistor is connected to the first pull-up node; and
an output capacitor, wherein a first electrode of the output capacitor is connected to the first pull-up node, and a second electrode of the output capacitor is connected to the first output terminal.
20 . A driving method applicable to the shift register according to claim 1 , comprising:
a display period of time of a frame, comprising:
in a first control phase, inputting, by the first input sub-circuit, a first pull-up signal to the first pull-up node; and
in a first output phase, outputting, by the output sub-circuit, a first output signal under control of the first pull-up node; and
a blanking period of time of the frame, comprising:
in a second control phase, inputting, by the second input sub-circuit, a second pull-up signal to the first pull-up node; and
in a second output phase, outputting, by the output sub-circuit, a second output signal under control of the first pull-up node.