Display device

Abstract

The invention provides a display device. The display device comprises a plurality of cascaded gate drive sub-circuits and at least one redundant drive sub-circuit. And the redundant driving sub-circuit is arranged between the ith-stage gate driving sub-circuit and the (i + 1) th-stage gate driving sub-circuit, which are used for outputting gate driving signals at the end of one display stage, in the plurality of gate driving sub-circuits. The output end of the redundant drive sub-circuit is electrically connected with a grid electrode of a first transistor in the ith-level grid drive sub-circuit and a grid electrode of a second transistor in the (i + 1) th-level grid drive sub-circuit, and a source electrode of a third transistor in the ith-level grid drive sub-circuit is electrically connected with a first clock signal line. The source electrode of the third transistor in the (i + 1) th-level gate drive sub-circuit is electrically connected with the second clock signal line, and the source electrode of the third transistor in the redundancy drive sub-circuit is electrically connected with the third clock signal line. The problem that the display quality is reduced due to the fact that the grid driving signals in the touch control stage and the display stage are different can be solved.

Claims

1. A display device, characterized in that: include: A touch display panel, the touch display panel comprising a gate driving circuit and a plurality of pixels, the gate driving circuit comprising a plurality of cascaded gate driving sub-circuits and at least one redundant driving sub-circuit, one gate driving sub-circuit being electrically connected to a row of pixels; The cycle of one frame of picture displayed by the touch display panel includes at least two display stages and at least one touch stage, one touch stage is located between two display stages, one redundant driving subcircuit is arranged after the i-th gate driving subcircuit that last outputs the gate driving signal at the end of one display stage among the plurality of gate driving subcircuits, and is arranged before the i+1-th gate driving subcircuit, where i is a positive integer; The gate driving subcircuit and the redundant driving subcircuit each include at least first to third transistors, the output end of the redundant driving subcircuit is electrically connected to the gate of the first transistor in the i-th gate driving subcircuit, the output end of the redundant driving subcircuit is electrically connected to the gate of the second transistor in the i+1-th gate driving subcircuit, the source of the third transistor in the i-th gate driving subcircuit is electrically connected to the first clock signal line, the source of the third transistor in the i+1-th gate driving subcircuit is electrically connected to the second clock signal line, and the source of the third transistor in the redundant driving subcircuit is electrically connected to the third clock signal line.

2. The display device according to claim 1, characterized in that The redundant driving sub-circuit is used to generate a control signal when the display phase after the touch control phase starts, and control the (i+1)th gate driving sub-circuit to generate a gate driving signal through the control signal.

3. The display device according to claim 2, characterized in that: The redundant driving sub-circuit is used to generate the control signal according to the clock signal transmitted by the third clock signal line when the display stage starts after the touch stage, and turn on the second transistor in the i+1th gate driving sub-circuit through the control signal to pull up the potential of the node Q of the i+1th gate driving sub-circuit, so that the i+1th gate driving sub-circuit generates the gate driving signal.

4. The display device according to claim 2, characterized in that: The redundant driving sub-circuit is further used for controlling the i-th gate driving sub-circuit to not output a gate driving signal through the control signal when the display phase starts after the touch control phase.

5. The display device according to claim 4, characterized in that: The redundant driving subcircuit is used to pull down the potential of the node Q of the i-th gate driving subcircuit through the control signal at the beginning of the display phase after the touch phase, so that the i-th gate driving subcircuit does not output the gate driving signal.

6. The display device according to claim 1, characterized in that: The clock signal transmitted by the third clock signal line is at a low level in the display phase before the touch phase, and in the display phase after the touch phase, the clock signal transmitted by the third clock signal line is at a high level first and then at a low level.

7. The display device according to claim 1, characterized in that: The source of the first transistor in the i-th gate driving sub-circuit is electrically connected to the low level signal input terminal of the i-th gate driving sub-circuit, and the drain is electrically connected to the node Q of the i-th gate driving sub-circuit; The gate of the second transistor in the i-th gate driving sub-circuit is electrically connected to the output terminal of the previous gate driving sub-circuit, the source is electrically connected to the high level signal input terminal, and the drain is electrically connected to the node Q of the i-th gate driving sub-circuit; The gate of the third transistor in the i-th gate driving sub-circuit is electrically connected to the node Q of the i-th gate driving sub-circuit, and the drain is electrically connected to the output end of the i-th gate driving sub-circuit.

8. The display device according to claim 1, characterized in that: The gate of the first transistor in the redundant driving subcircuit is electrically connected to the output terminal of the subsequent driving subcircuit, the source is electrically connected to the low level signal input terminal of the redundant driving subcircuit, and the drain is electrically connected to the node Q of the redundant driving subcircuit; The gate of the second transistor in the redundant driving subcircuit is electrically connected to the output terminal of the previous driving subcircuit, the source is electrically connected to the high level signal input terminal, and the drain is electrically connected to the node Q of the redundant driving subcircuit; The gate of the third transistor in the redundant driving sub-circuit is electrically connected to the node Q of the redundant driving sub-circuit, and the drain is electrically connected to the output end of the redundant driving sub-circuit.

9. The display device according to claim 1, characterized in that: The gate of the first transistor in the i+1-th gate driving subcircuit is electrically connected to the output end of the subsequent driving subcircuit, the source is electrically connected to the low level signal input end of the i+1-th gate driving subcircuit, and the drain is electrically connected to the node Q of the i+1-th gate driving subcircuit; The source of the second transistor in the i+1th gate driving sub-circuit is electrically connected to the high level signal input terminal, and the drain is electrically connected to the node Q of the i+1th gate driving sub-circuit; The gate of the third transistor in the i+1th gate driving sub-circuit is electrically connected to the node Q of the i+1th gate driving sub-circuit, and the drain is electrically connected to the output end of the i+1th gate driving sub-circuit.

10. The display device according to claim 1, characterized in that The i-th level gate driving subcircuit is electrically connected to the pixels in the i-th row, the i+1-th level gate driving subcircuit is electrically connected to the pixels in the i+1-th row, and the output end of the redundant driving subcircuit is insulated from any row of pixels.

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