SHIFT REGISTER, GATE INTEGRATED DRIVING CIRCUIT AND DISPLAY SCREEN
First Claim
1. A shift register, comprising:
- a first thin film transistor having a gate connected with a signal input terminal, a drain connected with a first reference signal terminal, and a source connected with a first puffing-up node;
a second thin film transistor having a gate connected with a reset signal terminal, a drain connected with the first pulling-up node, and a source connected with a second reference signal terminal;
a third thin film transistor having a gate connected with the second pulling-up node, a drain connected with a clock signal terminal, and a source connected with a signal output terminal;
a fourth thin film transistor having a gate connected with a touch control signal terminal, a drain connected with the signal output terminal, a source connected with a low voltage signal terminal, wherein the touch control signal terminal is configured to turn on the fourth thin film transistor during a touch period and turn off the fourth thin film transistor during a display period;
a capacitor, provided between the second puffing-up node and the signal output terminal; and
a leakage-proof module, provided among a display control signal terminal, the first pulling-up node and the second pulling-up node, wherein the leakage-proof module is configured to, under a control of the display control signal terminal, conduct a path between the first pulling-up node and the second pulling-up node during the display period and disconnect the path between the first pulling-up node and the second pulling-up node during the touch period.
1 Assignment
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Accused Products
Abstract
There is disclosed a shift register, a gate integrated driving circuit and a display screen. In the shift register, a connection point between the source of the first thin film transistor (T1) and the drain of the second thin film transistor (T2) is set as the first pulling-up node (PU1), a connection point between the capacitor (C1) and the gate of the third thin film transistor (T3) is set as the second pulling-up node (PU2), and the leakage-proof module is added between the first pulling-up node (PU1) and the second pulling-up node (PU2). The leakage-proof module is configured to, under the control of the display control signal terminal (CTI): conduct the path between the first pulling-up node (PU1) and the second pulling-up node (PU2) during the display period in a frame, so that the shift register can output a normal gate-on signal; and disconnect the path between the first pulling-up node (PU1) and the second pulling-up node (PU2) during the touch period in the frame, which is equivalent to connecting a resistor having a large resistance in a discharging path of the capacitor (C1) in series, so that the discharging of the capacitor (C1) can be slowed greatly, and a leakage speed of the capacitor (C1) is decreased effectively, which avoids a problem of abnormal displaying occurs possibly in an application of a touch screen with a high reporting rate.
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Citations
18 Claims
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1. A shift register, comprising:
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a first thin film transistor having a gate connected with a signal input terminal, a drain connected with a first reference signal terminal, and a source connected with a first puffing-up node; a second thin film transistor having a gate connected with a reset signal terminal, a drain connected with the first pulling-up node, and a source connected with a second reference signal terminal; a third thin film transistor having a gate connected with the second pulling-up node, a drain connected with a clock signal terminal, and a source connected with a signal output terminal; a fourth thin film transistor having a gate connected with a touch control signal terminal, a drain connected with the signal output terminal, a source connected with a low voltage signal terminal, wherein the touch control signal terminal is configured to turn on the fourth thin film transistor during a touch period and turn off the fourth thin film transistor during a display period; a capacitor, provided between the second puffing-up node and the signal output terminal; and a leakage-proof module, provided among a display control signal terminal, the first pulling-up node and the second pulling-up node, wherein the leakage-proof module is configured to, under a control of the display control signal terminal, conduct a path between the first pulling-up node and the second pulling-up node during the display period and disconnect the path between the first pulling-up node and the second pulling-up node during the touch period. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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2. The shift register of claim wherein the leakage-proof module comprises a fifth thin film transistor having a gate connected with the display control signal terminal, a drain connected with the first puffing-up node and a source connected with the second puffing-up node.
Specification