Driving circuit, driving method and display device

Abstract

The invention provides a driving circuit, a driving method and display equipment, and relates to the technical field of display. The driving circuit is used for driving a source electrode driving circuit and comprises a power supply switching sub-circuit which is electrically connected to a touch control power supply end and a display power supply end and is configured to output a touch control power supply signal from the touch control power supply end or a display power supply signal from the display power supply end based on signal output states of the touch control power supply end and the display power supply end; and the power supply control sub-circuit is electrically connected to the power supply switching sub-circuit and the source electrode driving circuit, and is configured to output a source electrode power supply signal to the source electrode driving circuit under the driving of the touch control power supply signal or the display power supply signal.

Description

Driving circuit, driving method and display device Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a driving circuit, a driving method, and a display device. Background Art

[0002] An embedded touchscreen display integrates display and touch technologies, achieving an integrated touch panel. This design reduces the impact of display noise on touch control and improves touch performance.

[0003] In this linkage design, the source driver circuit participates in the operation of both the display panel and the touch panel. The source driver circuit is powered by the display power supply. When the display panel is not operating, the display power supply is not powered. This can cause the source driver circuit to malfunction, and thus the touch panel to malfunction.

[0004] Summary of the Invention

[0005] The present disclosure provides a driving circuit, a driving method, and a display device.

[0006] According to a first aspect, the present disclosure provides a driving circuit for driving a source driving circuit, including: a power switching sub-circuit, electrically connected to a touch power terminal and a display power terminal, and configured to output a touch power signal from the touch power terminal or a display power signal from the display power terminal based on the signal output status of the touch power terminal and the display power terminal; and a power control sub-circuit, electrically connected to the power switching sub-circuit and the source driving circuit, and configured to output a source power signal to the source driving circuit under the drive of the touch power signal or the display power signal.

[0007] For example, the power switching subcircuit is configured to: output a display power signal when it is determined that a touch power signal and a display power signal are received; output a touch power signal when it is determined that only a touch power signal is received; and output a display power signal when it is determined that only a display power signal is received.

[0008] For example, the power switching subcircuit includes a display driving unit and a touch driving unit; wherein the display driving unit is electrically connected to the display power supply terminal, the power control subcircuit and the control signal terminal, and is configured to output the display power signal to the power control subcircuit under the control of the control signal from the control signal terminal; and the touch driving unit is electrically connected to the touch power supply terminal, the power control subcircuit and the control signal terminal, and is configured to output the touch power signal to the power control subcircuit under the control of the control signal.

[0009] For example, the display driving unit includes a first transistor; wherein the gate of the first transistor is electrically connected to the control signal terminal, the drain of the first transistor is electrically connected to the display power terminal, and the source of the first transistor is electrically connected to the power control subcircuit.

[0010] For example, the touch drive unit includes a second transistor, a third transistor and a fourth transistor; wherein the gate of the second transistor is electrically connected to the control signal terminal, the drain of the second transistor is electrically connected to the gate of the fourth transistor, and the source of the second transistor is electrically connected to the voltage terminal; the gate of the third transistor is electrically connected to the gate of the fourth transistor, the drain of the third transistor is electrically connected to the power control subcircuit, the source of the third transistor is electrically connected to the source of the fourth transistor; and the gate and drain of the fourth transistor are both electrically connected to the touch power terminal.

[0011] For example, the touch driving unit is also electrically connected to the display power terminal, and is configured to output the touch power signal to the power control sub-circuit under the control of the control signal and the display power signal.

[0012] For example, the touch driving unit includes a second transistor and a third transistor; wherein the gate of the second transistor is electrically connected to the control signal terminal, the drain of the second transistor is electrically connected to the display power terminal, and the source of the second transistor is electrically connected to the voltage terminal; and the gate of the third transistor is electrically connected to the display power terminal, the drain of the third transistor is electrically connected to the power control subcircuit, and the source of the third transistor is electrically connected to the touch power terminal.

[0013] For example, the touch driving unit includes a second transistor, a third transistor and a fourth transistor; wherein the gate of the second transistor is electrically connected to the control signal terminal, the drain of the second transistor is electrically connected to the display power terminal, and the source of the second transistor is electrically connected to the voltage terminal; the gate of the third transistor is electrically connected to the display power terminal, the drain of the third transistor is electrically connected to the power control subcircuit, and the source of the third transistor is electrically connected to the source of the fourth transistor; and the gate of the fourth transistor is electrically connected to the display power terminal, and the drain of the fourth transistor is electrically connected to the touch power terminal.

[0014] For example, the driving circuit also includes: a timing control subcircuit, electrically connected to the power control subcircuit and the source driving circuit, and configured to output a synchronization signal under the drive of the timing power signal from the power control subcircuit; and a signal control subcircuit, electrically connected to the timing control subcircuit, the source driving circuit and the touch power terminal, and configured to receive the touch power signal, and output a switching signal based on the synchronization signal under the drive of the touch power signal, and the switching signal is used to control the source driving circuit to switch between the display driving mode and the touch driving mode; wherein the power control subcircuit is also configured to output the timing power signal to the timing control subcircuit under the drive of the touch power signal or the display power signal.

[0015] For example, the signal control subcircuit is further configured to receive a display power signal and output a control signal based on the display drive signal; wherein the power switching subcircuit outputs a touch power signal or a display power signal to the power control subcircuit based on the control signal.

[0016] For example, the timing control sub-circuit is further configured to receive a control signal and output a display signal to the source driving circuit based on the control signal.

[0017] For example, the signal control subcircuit is further configured to receive a sleep signal and output a control signal based on the sleep signal; wherein the power switching subcircuit is in an off-circuit state based on the control signal.

[0018] For example, the signal control subcircuit is also configured to receive a sleep signal and output a sleep mode signal based on the sleep signal; wherein the timing control subcircuit outputs a display signal to the source driver circuit based on the sleep mode signal; the display signal is used to control the source driver circuit to output a data signal, and the display signal controls the grayscale value indicated by the data signal to be 0.

[0019] According to a second aspect, the present disclosure provides a display device, including a main board, configured to output a display power signal and a touch power signal; a driving circuit provided in an embodiment of the present disclosure, electrically connected to the main board, configured to output a source power signal based on the display power signal or the touch power signal; a source driving circuit, electrically connected to the driving circuit, configured to output a data signal under the control of the source power signal; and a display panel, electrically connected to the source driving circuit, configured to display an image based on the data signal.

[0020] For example, the display panel is also configured to generate a sensor signal in response to a received touch operation; the source driver circuit is also configured to collect the sensor signal and output a touch signal based on the sensor signal; and the driver circuit is also configured to receive and process the touch signal to obtain information related to the touch operation.

[0021] According to the third aspect, the present disclosure provides a driving method, which is applied to the driving circuit provided in the embodiment of the present disclosure, including: outputting a touch power signal from the touch power terminal or a display power signal from the display power terminal based on the signal output status of the touch power terminal and the display power terminal; and outputting a source power signal to the source driving circuit under the drive of the touch power signal or the display power signal.

[0022] For example, based on the signal output status of the touch power supply terminal and the display power supply terminal, outputting the touch power signal from the touch power supply terminal or the display power signal from the display power supply terminal includes: when it is determined that the touch power signal and the display power signal are received, outputting the display power signal; when it is determined that only the touch power signal is received, outputting the touch power signal; and when it is determined that only the display power signal is received, outputting the display power signal.

[0023] For example, based on the signal output status of the touch power supply terminal and the display power supply terminal, outputting a touch power signal from the touch power supply terminal or a display power signal from the display power supply terminal includes: outputting a control signal based on the signal output status of the touch power supply terminal and the display power supply terminal; and outputting the display power signal or the touch power signal under the control of the control signal.

[0024] For example, based on the signal output status of the touch power supply terminal and the display power supply terminal, outputting the control signal includes: when it is determined that the touch power supply signal and the display power supply signal are received, outputting a control signal with a first level; when it is determined that only the touch power supply signal is received, outputting a control signal with a second level; and when it is determined that only the display power supply signal is received, outputting a control signal with a first level.

[0025] For example, under the control of the control signal, outputting a display power signal or a touch power signal includes: outputting a display power signal when the control signal is determined to be at a first level; and outputting a touch power signal when the control signal is determined to be at a second level.

[0026] For example, the driving method further includes: under the control of a control signal, outputting a display signal, the display signal being used to control the source driving circuit to output a data signal; wherein, when the control signal is determined to be at the second level, the display signal controls the grayscale value indicated by the data signal to be 0.

[0027] For example, the driving method further includes: under the control of the control signal, outputting a clock control signal, the clock control signal being used to control the output state of the clock signal; wherein, when it is determined that the control signal is at the second level, turning off the clock signal based on the clock control signal.

[0028] For example, the driving method further includes: outputting a control signal having a first level based on a received sleep signal, wherein the sleep signal instructs the display power terminal not to output the display power signal.

[0029] For example, the driving method also includes: outputting a sleep mode signal based on the received sleep signal; and under the control of the sleep mode signal, outputting a display signal, the display signal being used to control the source driving circuit to output a data signal; wherein, under the control of the sleep mode signal, the display signal controls the grayscale value indicated by the data signal to be 0.

[0030] For example, the driving method also includes: outputting a timing power signal under the drive of a touch power signal or a display power signal; outputting a synchronization signal under the drive of the timing power signal; and outputting a switching signal based on the synchronization signal, the switching signal being used to control the source driving circuit to switch between the display driving mode and the touch driving mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is a schematic structural diagram of a driving circuit according to an embodiment of the present disclosure;

[0032] FIG2 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0033] FIG3 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0034] FIG4 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0035] FIG5 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0036] FIG6A is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0037] FIG6B is a schematic diagram of the layout of the driving circuit in FIG6A;

[0038] FIG7 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0039] FIG8 is a schematic structural diagram of a signal control subcircuit according to an embodiment of the present disclosure;

[0040] FIG9 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0041] FIG10 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

[0042] FIG11 is a schematic structural diagram of a display device according to another embodiment of the present disclosure; and

[0043] FIG12 is a flowchart of a driving method according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of them. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure. It should be noted that throughout the drawings, the same elements are represented by the same or similar figure marks. In the following description, some specific embodiments are only for descriptive purposes and should not be understood as any limitation to the present disclosure, but are only examples of the embodiments of the present disclosure. Conventional structures or configurations will be omitted when they may cause confusion in the understanding of the present disclosure. It should be noted that the shapes and sizes of the components in the figures do not reflect the actual size and proportion, but only illustrate the contents of the embodiments of the present disclosure.

[0045] Unless otherwise defined, technical or scientific terms used in the embodiments of the present disclosure shall have the same general meaning as those skilled in the art. The terms "first," "second," and similar terms used in the embodiments of the present disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different components.

[0046] In addition, in the description of the embodiments of the present disclosure, the term "connected" or "connected to" may refer to a direct connection between two components or a connection between two components via one or more other components. In addition, the two components may be connected or coupled via a wired or wireless manner.

[0047] Furthermore, in the description of the embodiments of the present disclosure, the terms "first level" and "second level" are used only to distinguish the difference in amplitude between the two levels. For example, the following description uses the example of a "first level" being a relatively low level and a "second level" being a relatively high level. Those skilled in the art will appreciate that the present disclosure is not limited to this example.

[0048] It should be noted that in the description of the embodiments of the present disclosure, the symbol GPIO can represent both a control signal terminal and a control signal provided by the control signal terminal. The symbol Touch Power can represent both a touch power signal terminal and a touch power signal provided by the touch power signal terminal, and can also represent the voltage of the touch power signal. The symbol Display Power can represent both a display power signal terminal and a display power signal provided by the display power signal terminal, and can also represent the voltage of the display power signal. The symbol GND can represent both a voltage terminal and a voltage provided by the voltage terminal. The following embodiments are the same and will not be repeated here.

[0049] In an in-cell touchscreen display, the source driver circuit is powered by the display power supply. When the display panel is not operating, the display power supply is disconnected. For example, when the display panel is not displaying an image, the display power supply may temporarily disconnect. Consequently, the source driver circuit cannot function properly without receiving a power signal, causing the touch panel to also not function properly.

[0050] In response to the above problems, the present disclosure provides a driving circuit for driving a source driving circuit, including: a power switching sub-circuit, the power switching sub-circuit being electrically connected to a touch power supply terminal and a display power supply terminal, respectively, and the power switching sub-circuit being configured to output a touch power signal from the touch power supply terminal or a display power signal from the display power supply terminal based on the signal output status of the touch power supply terminal and the display power supply terminal; and a power control sub-circuit, the power control sub-circuit being electrically connected to the power switching sub-circuit and the source driving circuit, respectively, and the power control sub-circuit being configured to output a source power signal to the source driving circuit under the drive of the touch power signal or the display power signal.

[0051] FIG1 is a schematic structural diagram of a driving circuit according to an embodiment of the present disclosure.

[0052] As shown in FIG. 1 , in embodiment 100 , a driving circuit 110 is electrically connected to a source driving circuit 120 , and the driving circuit 110 supplies power to the source driving circuit 120 so that the source driving circuit 120 can operate normally.

[0053] In the embodiment of the present disclosure, the driving circuit 110 includes a power switching sub-circuit 111 and a power control sub-circuit 112 .

[0054] In the disclosed embodiment, the power switching subcircuit 111 is electrically connected to a touch power terminal, Touch Power, and a display power terminal, Display Power. The touch power terminal, Touch Power, is configured to provide a touch power signal, Touch Power. This touch power signal can power the touch panel in the touch display, allowing the touch panel to start up properly. The display power terminal, Display Power, is configured to provide a display power signal, Display Power. This display power signal can power the display panel in the touch display, allowing the display panel to start up properly.

[0055] The power switching sub-circuit 111 outputs a touch power signal Touch Power or a display power signal Display Power based on the signal output states of the touch power terminal Touch Power and the display power terminal Display Power.

[0056] For example, the power switching sub-circuit 111 selects one of the touch power signal Touch Power and the display power signal Display Power according to the signals outputted by the touch power terminal Touch Power and the display power terminal Display Power, and outputs the selected signal to the power control sub-circuit 112 .

[0057] For example, the power switching sub-circuit 111 may output the display power signal Display Power to the power control sub-circuit 112 by default, or may switch the output power signal from the display power signal Display Power to the touch power signal Touch Power.

[0058] For example, when the touch power terminal Touch Power provides the touch power signal Touch Power, the power switching sub-circuit 111 can receive the touch power signal Touch Power, and it can be considered that the touch power terminal Touch Power is in a power supply state at this time. When the touch power terminal Touch Power does not provide the touch power signal Touch Power, the power switching sub-circuit 111 does not receive the touch power signal Touch Power, and it can be considered that the touch power terminal Touch Power is in a power-off state at this time.

[0059] Similarly, when the display power terminal Display Power provides the display power signal Display Power, the power switching sub-circuit 111 can receive the display power signal Display Power, and it can be considered that the display power terminal Display Power is in a power supply state. When the display power terminal Display Power does not provide the display power signal Display Power, the power switching sub-circuit 111 cannot receive the display power signal Display Power, and it can be considered that the display power terminal Display Power is in a power-off state.

[0060] The power switching sub-circuit 111 selects one of the touch power signal Touch Power and the display power signal Display Power and outputs it to the power control sub-circuit 112 according to the power supply status or power-off status of the touch power terminal Touch Power and the display power terminal Display Power.

[0061] In the embodiment of the present disclosure, the power control sub-circuit 112 is electrically connected to the power switching sub-circuit 111 and the source driver circuit 120. For example, the power control sub-circuit 112 may be a power management integrated circuit (PMIC).

[0062] Driven by the touch power signal Touch Power or the display power signal Display Power, a source power signal is output to the source driver circuit 120. The source power signal is a power signal for starting the source driver circuit 120 and is used to power the source driver circuit 120.

[0063] For example, when the power switching sub-circuit 111 outputs the touch power signal Touch Power, the power control sub-circuit 112 may convert the touch power signal Touch Power into a source power signal. When the power switching sub-circuit 111 outputs the display power terminal Display Power, the power control sub-circuit 112 may convert the display power terminal Display Power into a source power signal.

[0064] In the disclosed embodiment, the source driver circuit 120 participates in the operation of the display panel. For example, the source driver circuit 120 outputs data signals to the display panel, causing the display panel to display data. The source driver circuit 120 also participates in the operation of the touch panel. For example, the source driver circuit 120 receives sensor signals from the touch panel to determine the touch operation received by the touch panel. Therefore, when the source driver circuit 120 is in an unpowered state, the source driver circuit 120 cannot operate normally, causing both the display panel and the touch panel to malfunction.

[0065] In the embodiment of the present disclosure, when the display power terminal Display Power is supplying power, the power switching subcircuit 111 outputs the display power signal Display Power to the power control subcircuit 112. When the display power terminal Display Power is powered off, the power switching subcircuit 111 switches to outputting the touch power signal Touch Power to the power control subcircuit 112. This ensures that the power control subcircuit 112 is always powered, thereby ensuring that the source driver circuit 120 is also always powered.

[0066] In the embodiment of the present disclosure, the power switching sub-circuit 111 outputs the display power signal Display Power when it determines that both the touch power signal Touch Power and the display power signal Display Power are received. Alternatively, the power switching sub-circuit 111 outputs the touch power signal Touch Power when it determines that only the touch power signal Touch Power is received. Alternatively, the power switching sub-circuit 111 outputs the display power signal Display Power when it determines that only the display power signal Display Power is received.

[0067] For example, when both the touch power terminal Touch Power and the display power terminal Display Power are in the power supply state, the power switching sub-circuit 111 may receive the touch power signal Touch Power and the display power signal Display Power. At this time, the power switching sub-circuit 111 outputs the display power signal Display Power to the power control sub-circuit 112.

[0068] For example, when the touch power terminal Touch Power is in the power supply state and the display power terminal Display Power is in the power-off state, the power switching sub-circuit 111 only receives the touch power signal Touch Power and outputs the touch power signal Touch Power to the power control sub-circuit 112.

[0069] For example, when the touch power terminal Touch Power is in a power-off state and the display power terminal Display Power is in a power-on state, the power switching sub-circuit 111 only receives the display power signal Display Power and outputs the display power signal Display Power to the power control sub-circuit 112 .

[0070] For example, the power control subcircuit 112 is powered by the display power signal Display Power by default. When the display panel does not display an image, the display power terminal Display Power will be in a non-powered state. Therefore, through the drive circuit 110 provided in the embodiment of the present disclosure, by designing the power switching subcircuit 111, the touch power terminal Touch Power and the display power terminal Display Power are simultaneously connected to the power switching subcircuit 111. When the display power terminal Display Power is not powered or accidentally loses power, the touch power terminal Touch Power can be used to supply power, ensuring the normal operation of the power control subcircuit 112 and the source driver circuit 120, and thus ensuring the normal touch function of the touch panel.

[0071] FIG2 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

[0072] As shown in FIG. 2 , the driving circuit 210 includes a power switching sub-circuit 211 and a power control sub-circuit 212 .

[0073] In the embodiment of the present disclosure, the power switching subcircuit 211 and the power control subcircuit 212 are similar to the power switching subcircuit 111 and the power control subcircuit 112 mentioned above, respectively. For the sake of simplicity, the same parts are not repeated here.

[0074] In the embodiment of the present disclosure, the power switching sub-circuit 211 includes a display driving unit 2111 and a touch driving unit 2112 .

[0075] In the disclosed embodiment, the display driver unit 2111 is electrically connected to the display power terminal Display Power, the power control sub-circuit 212, and the control signal terminal GPIO. Under the control of the control signal GPIO from the control signal terminal GPIO, the display driver unit 2111 outputs the display power signal Display Power to the power control sub-circuit 212.

[0076] For example, the display power terminal Display Power provides a display power signal Display Power to the display driver unit 2111. The control signal GPIO can control the display driver unit 2111 to be in an on state or an off state. When the control signal GPIO controls the display driver unit 2111 to be in an on state, the display driver unit 2111 can output the display power signal Display Power to the power control sub-circuit 212.

[0077] In the disclosed embodiment, the touch driver unit 2112 is electrically connected to the touch power terminal Touch Power, the power control sub-circuit 212, and the control signal terminal GPIO. Under the control of the control signal GPIO from the control signal terminal GPIO, the touch driver unit 2112 outputs the touch power signal Touch Power to the power control sub-circuit 212.

[0078] For example, the touch power terminal Touch Power provides a touch power signal Touch Power to the touch driver unit 2112. The control signal GPIO can control the touch driver unit 2112 to be in an on state or an off state. When the control signal GPIO controls the touch driver unit 2112 to be in an on state, the touch driver unit 2112 can output the touch power signal Touch Power to the power control sub-circuit 212.

[0079] In the embodiment of the present disclosure, when both the touch power terminal Touch Power and the display power terminal Display Power are in a power supply state, the touch driver unit 2112 can receive the touch power signal Touch Power, and the display driver unit 2111 can receive the display power signal Display Power. At this time, the control signal GPIO can control the display driver unit 2111 to be in an on state and control the touch driver unit 2112 to be in an off state. In this case, the display driver unit 2111 can output the display power signal Display Power to the power control sub-circuit 212.

[0080] In the embodiment of the present disclosure, when the touch power terminal Touch Power is in the power-on state and the display power terminal Display Power is in the power-off state, only the touch driver unit 2112 can receive the touch power signal Touch Power, and the display driver unit 2111 cannot receive the display power signal Display Power. In this case, the control signal GPIO can control the display driver unit 2111 to be in the off state and control the touch driver unit 2112 to be in the on state. In this case, the touch driver unit 2112 can output the touch power signal Touch Power to the power control sub-circuit 212.

[0081] In the embodiment of the present disclosure, when the touch power terminal Touch Power is in a power-off state and the display power terminal Display Power is in a power-on state, only the display driver unit 2111 can receive the display power signal Display Power, and the touch driver unit 2112 cannot receive the touch power signal Touch Power. In this case, the control signal GPIO can control the display driver unit 2111 to be in an on state and control the touch driver unit 2112 to be in an off state. In this case, the display driver unit 2111 can output the display power signal Display Power to the power control sub-circuit 212.

[0082] FIG3 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

[0083] 3 , the driving circuit 310 includes a power switching subcircuit 311 and a power control subcircuit 312 . The power switching subcircuit 311 includes a display driving unit 3111 and a touch driving unit 3112 .

[0084] In the embodiment of the present disclosure, the power switching subcircuit 311 and the power control subcircuit 312 are similar to the power switching subcircuit 111 and the power control subcircuit 112 mentioned above, respectively; the display driving unit 3111 and the touch driving unit 3112 are similar to the display driving unit 2111 and the touch driving unit 2112 mentioned above, respectively. For the sake of simplicity, the same parts will not be repeated here in this disclosure.

[0085] In the embodiment of the present disclosure, the display driving unit 3111 includes a first transistor M1. The first transistor M1 is a PMOS transistor.

[0086] In the embodiment of the present disclosure, the gate of the first transistor M1 is electrically connected to the control signal terminal GPIO, the drain of the first transistor M1 is electrically connected to the display power terminal Display Power, and the source of the first transistor M1 is electrically connected to the power control sub-circuit 312.

[0087] In the embodiment of the present disclosure, the touch driving unit 3112 includes a second transistor M2, a third transistor M3, and a fourth transistor M4. The second transistor M2 is an NMOS transistor, and the third transistor M3 and the fourth transistor M4 are PMOS transistors.

[0088] In the disclosed embodiment, the gate of the second transistor M2 is electrically connected to the control signal terminal GPIO, the drain of the second transistor M2 is electrically connected to the gate of the fourth transistor M4, and the source of the second transistor M2 is electrically connected to the voltage terminal GND. The gate of the third transistor M3 is electrically connected to the gate of the fourth transistor M4, the drain of the third transistor M3 is electrically connected to the power control subcircuit 312, and the source of the third transistor M3 is electrically connected to the source of the fourth transistor M4. The gate and drain of the fourth transistor M4 are both electrically connected to the touch power terminal Touch Power.

[0089] In the embodiment of the present disclosure, the touch drive unit 3112 further includes a resistor R. For example, the resistance of the resistor R can be 100 kΩ. A first end of the resistor R is electrically connected to the touch power supply terminal Touch Power, and a second end of the resistor R is electrically connected to the gate of the third transistor M3. A touch power signal Touch Power can be applied to the gate of the third transistor M3 through the resistor R. The voltage terminal GND can be a ground terminal, and the voltage of the voltage terminal GND can be 0 V. The resistor R can divide the touch power signal Touch Power provided by the touch power supply terminal Touch Power to prevent a short circuit when the second transistor M2 is turned on.

[0090] In the embodiment of the present disclosure, the driving circuit 310 further includes a capacitor C. A first end of the capacitor C is electrically connected to the power control subcircuit 312, and a second end of the capacitor C is electrically connected to the voltage terminal GND. The capacitor C can stabilize the power signal input to the power control subcircuit 312.

[0091] In the embodiment of the present disclosure, the voltage of the control signal GPIO provided by the control signal terminal GPIO is related to the power supply state of the display power terminal Display Power.

[0092] In the embodiment of the present disclosure, when the display power supply terminal Display Power is in the power supply state, the level of the control signal GPIO is low. The first transistor M1 is a PMOS tube, and the second transistor M2 is an NMOS tube. Under the control of the low level of the control signal GPIO, the first transistor M1 is in the on state, and the second transistor M2 is in the off state. When the touch power supply terminal Touch Power is in the power supply state, the touch power signal Touch Power is applied to the gate of the third transistor M3, the gate of the fourth transistor M4, and the drain of the fourth transistor M4. The gate voltage of the third transistor M3 and the gate voltage of the fourth transistor M4 gradually increase. Since the third transistor M3 and the fourth transistor M4 are PMOS tubes, the third transistor M3 and the fourth transistor M4 are in the off state.

[0093] In this case, the second transistor M2, the third transistor M3, and the fourth transistor in the touch driving unit 3112 are all in the off state, and the first transistor M1 in the display driving unit 3111 is in the on state. Therefore, when the display power terminal Display Power and the touch power terminal Touch Power are both in the power supply state, the display power signal Display Power is output to the power control sub-circuit 312 through the first transistor M1.

[0094] In the disclosed embodiment, when the display power supply terminal Display Power is in a power-off state, the level of the control signal GPIO is high. The first transistor M1 is a PMOS transistor, and the second transistor M2 is an NMOS transistor. Under the control of the high level of the control signal GPIO, the first transistor M1 is in an off state, and the second transistor M2 is in an on state. When the second transistor M2 is in an on state, due to the action of the resistor R, the voltage GND is applied to the gate of the third transistor M3 and the gate of the fourth transistor M4 through the second transistor M2. Since the third transistor M3 and the fourth transistor M4 are PMOS transistors, under the control of the low level voltage GND, the third transistor M3 and the fourth transistor M4 are in an on state.

[0095] In this case, the second transistor M2, the third transistor M3, and the fourth transistor in the touch driving unit 3112 are all in the on state, and the first transistor M1 in the display driving unit 3111 is in the off state. Therefore, when the display power terminal Display Power is in the power-off state and the touch power terminal Touch Power is in the power-on state, the touch power signal Touch Power is output to the power control sub-circuit 312 through the third transistor M3 and the fourth transistor M4.

[0096] In the disclosed embodiment, when the display power terminal Display Power is in the power-on state, the control signal GPIO is at a low level. The first transistor M1 is a PMOS transistor, and the second transistor M2 is an NMOS transistor. Under the control of the low level of the control signal GPIO, the first transistor M1 is in the on state, and the second transistor M2 is in the off state. When the touch power terminal Touch Power is in the power-off state, the third transistor M3 and the fourth transistor M4 are in the off state.

[0097] In this case, the second transistor M2, the third transistor M3, and the fourth transistor in the touch driving unit 3112 are all in the off state, and the first transistor M1 in the display driving unit 3111 is in the on state. Therefore, when the display power terminal Display Power is in the power supply state and the touch power terminal Touch Power is in the power-off state, the display power signal Display Power is output to the power control sub-circuit 312 through the first transistor M1.

[0098] According to the embodiment of the present disclosure, when the display power terminal Display Power is supplying power, the first transistor M1 is in an on state, the second transistor M2, the third transistor M3, and the fourth transistor are all in an off state, and the display power signal Display Power is output to the power control subcircuit 312 via the first transistor M1. When the display power terminal Display Power is powered off, the first transistor M1 is in an off state, the second transistor M2, the third transistor M3, and the fourth transistor are all in an on state, and the touch power terminal Touch Power outputs the touch power signal Touch Power to the power control subcircuit 312 via the third transistor M3 and the fourth transistor. Therefore, the connection structure of the transistors in the power switching subcircuit 311 enables switching output of the power signal. Furthermore, transistors have the advantages of easy control, low voltage drop, and fast response speed. The power switching subcircuit 311 can reduce the voltage drop of the power signal output to the power control subcircuit 312, thereby stabilizing the voltage of the power signal output to the power control subcircuit 312.

[0099] FIG4 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

[0100] As shown in FIG4 , the driving circuit 410 includes a power switching subcircuit 411 and a power control subcircuit 412 . The power switching subcircuit 411 includes a display driving unit 4111 and a touch driving unit 4112 .

[0101] In the embodiment of the present disclosure, the power switching subcircuit 411 and the power control subcircuit 412 are similar to the power switching subcircuit 111 and the power control subcircuit 112 mentioned above, respectively; the display driving unit 4111 and the touch driving unit 4112 are similar to the display driving unit 2111 and the touch driving unit 2112 mentioned above, respectively. For the sake of simplicity, the same parts will not be repeated here in this disclosure.

[0102] In the disclosed embodiment, the touch driver unit 4112 is electrically connected to the display power terminal Display Power, the touch power terminal Touch Power, the power control sub-circuit 412, and the control signal terminal GPIO. Under the control of the control signal GPIO, the touch power signal Touch Power, and the display power signal Display Power, the touch driver unit 4112 outputs the touch power signal Touch Power to the power control sub-circuit 412.

[0103] For example, the touch power terminal Touch Power provides a touch power signal Touch Power to the touch driver unit 4112. The control signal GPIO and the display power signal Display Power can control the touch driver unit 4112 to be in an on state or an off state. When the control signal GPIO and the display power signal Display Power control the touch driver unit 4112 to be in an on state, the touch driver unit 4112 can output the touch power signal Touch Power to the power control sub-circuit 412.

[0104] In the embodiment of the present disclosure, when both the touch power terminal Touch Power and the display power terminal Display Power are in a power supply state, the touch driver unit 4112 can receive the touch power signal Touch Power, and the display driver unit 4111 can receive the display power signal Display Power. At this time, the control signal GPIO can control the display driver unit 4111 to be in an on state, while the control signal GPIO and the display power signal Display Power can control the touch driver unit 4112 to be in an off state. In this case, the display driver unit 4111 can output the display power signal Display Power to the power control sub-circuit 412.

[0105] In the embodiment of the present disclosure, when the touch power terminal Touch Power is in the power-on state and the display power terminal Display Power is in the power-off state, only the touch driver unit 4112 can receive the touch power signal Touch Power, and the display driver unit 4111 cannot receive the display power signal Display Power. In this case, the control signal GPIO can control the display driver unit 4111 to be in the off state, and the control signal GPIO and the display power signal Display Power can control the touch driver unit 4112 to be in the on state. In this case, the touch driver unit 4112 can output the touch power signal Touch Power to the power control sub-circuit 412.

[0106] In the embodiment of the present disclosure, when the touch power terminal Touch Power is in a power-off state and the display power terminal Display Power is in a power-on state, only the display driver unit 4111 can receive the display power signal Display Power, and the touch driver unit 4112 cannot receive the touch power signal Touch Power. In this case, the control signal GPIO can control the display driver unit 4111 to be in a conductive state, and the control signal GPIO and the display power signal Display Power can control the touch driver unit 4112 to be in a disconnected state. In this case, the display driver unit 4111 can output the display power signal Display Power to the power control sub-circuit 412.

[0107] FIG5 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

[0108] As shown in FIG5 , the driving circuit 510 includes a power switching subcircuit 511 and a power control subcircuit 512 . The power switching subcircuit 511 includes a display driving unit 5111 and a touch driving unit 5112 .

[0109] In the embodiment of the present disclosure, the power switching subcircuit 511 and the power control subcircuit 512 are similar to the power switching subcircuit 111 and the power control subcircuit 112 mentioned above, respectively; the display driving unit 5111 and the touch driving unit 5112 are similar to the display driving unit 2111 and the touch driving unit 2112 mentioned above, respectively. For the sake of simplicity, the same parts of the present disclosure will not be repeated here.

[0110] In the embodiment of the present disclosure, the display driving unit 5111 includes a first transistor M1. The first transistor M1 is a PMOS transistor.

[0111] In the embodiment of the present disclosure, the gate of the first transistor M1 is electrically connected to the control signal terminal GPIO, the drain of the first transistor M1 is electrically connected to the display power terminal Display Power, and the source of the first transistor M1 is electrically connected to the power control sub-circuit 512.

[0112] In the embodiment of the present disclosure, the touch driving unit 5112 includes a second transistor M2 and a third transistor M3. The second transistor M2 is an NMOS transistor, and the third transistor M3 is a PMOS transistor.

[0113] In the embodiment of the present disclosure, the gate of the second transistor M2 is electrically connected to the control signal terminal GPIO, the drain of the second transistor M2 is electrically connected to the display power terminal Display Power, and the source of the second transistor M2 is electrically connected to the voltage terminal GND. The gate of the third transistor M3 is electrically connected to the display power terminal Display Power, the drain of the third transistor M3 is electrically connected to the power control sub-circuit 512, and the source of the third transistor M3 is electrically connected to the touch power terminal Touch Power.

[0114] In the embodiment of the present disclosure, the touch drive unit 5112 further includes a resistor R. A first end of the resistor R is electrically connected to the display power terminal Display Power, and a second end of the resistor R is electrically connected to the gate of the third transistor M3. A display power signal Display Power can be applied to the gate of the third transistor M3 via the resistor R. The voltage terminal GND can be a ground terminal, and the voltage of the voltage terminal GND can be 0V. The resistor R can divide the touch power signal Touch Power provided by the touch power terminal Touch Power to prevent a short circuit when the second transistor M2 is turned on.

[0115] In the embodiment of the present disclosure, the driving circuit 510 further includes a capacitor C. A first end of the capacitor C is electrically connected to the power control subcircuit 512, and a second end of the capacitor C is electrically connected to the voltage terminal GND. The capacitor C can stabilize the power signal input to the power control subcircuit 512.

[0116] In the embodiment of the present disclosure, the voltage of the control signal GPIO provided by the control signal terminal GPIO is related to the power supply state of the display power terminal Display Power.

[0117] In the disclosed embodiment, when the display power supply terminal Display Power is in the power supply state, the control signal GPIO is at a low level. The first transistor M1 is a PMOS transistor, and the second transistor M2 is an NMOS transistor. Under the control of the low level of the control signal GPIO, the first transistor M1 is in the on state, and the second transistor M2 is in the off state. The display power supply signal Display Power is also applied to the gate of the third transistor M3, and the gate voltage of the third transistor M3 gradually increases. Since the third transistor M3 is a PMOS transistor, the third transistor M3 is in the off state.

[0118] In this case, the second transistor M2 and the third transistor M3 in the touch driving unit 5112 are both in the off state, and the first transistor M1 in the display driving unit 5111 is in the on state. Therefore, when the display power terminal Display Power and the touch power terminal Touch Power are both in the power supply state, the display power signal Display Power is output to the power control sub-circuit 512 through the first transistor M1.

[0119] In the disclosed embodiment, when the display power supply terminal Display Power is in a power-off state, the level of the control signal GPIO is high. The first transistor M1 is a PMOS transistor, and the second transistor M2 is an NMOS transistor. Under the control of the high level of the control signal GPIO, the first transistor M1 is in an off state, and the second transistor M2 is in an on state. When the second transistor M2 is in an on state, due to the action of the resistor R, the voltage GND is applied to the gate of the third transistor M3 through the second transistor M2. Since the third transistor M3 is a PMOS transistor, under the control of the low level voltage GND, the third transistor M3 is in an on state.

[0120] In this case, the second transistor M2 and the third transistor M3 in the touch driving unit 5112 are both in the on state, and the first transistor M1 in the display driving unit 5111 is in the off state. Therefore, when the display power terminal Display Power is in the power-off state and the touch power terminal Touch Power is in the power-on state, the touch power signal Touch Power is output to the power control sub-circuit 512 through the third transistor M3.

[0121] In the disclosed embodiment, when the display power supply terminal Display Power is in the power supply state, the control signal GPIO is at a low level. The first transistor M1 is a PMOS transistor, and the second transistor M2 is an NMOS transistor. Under the control of the low level of the control signal GPIO, the first transistor M1 is in the on state, and the second transistor M2 is in the off state. The display power supply signal Display Power is also applied to the gate of the third transistor M3, and the gate voltage of the third transistor M3 gradually increases. Since the third transistor M3 is a PMOS transistor, the third transistor M3 is in the off state.

[0122] In this case, the second transistor M2 and the third transistor M3 in the touch driving unit 5112 are both in the off state, and the first transistor M1 in the display driving unit 5111 is in the on state. Therefore, when the display power terminal Display Power is in the power supply state and the touch power terminal Touch Power is in the power-off state, the display power signal Display Power is output to the power control sub-circuit 512 through the first transistor M1.

[0123] According to the embodiment of the present disclosure, when the display power terminal Display Power is supplying power, the first transistor M1 is in an on state, the second transistor M2 and the third transistor M3 are both in an off state, and the display power signal Display Power is output to the power control subcircuit 512 via the first transistor M1. When the display power terminal Display Power is powered off, the first transistor M1 is in an off state, the second transistor M2 and the third transistor M3 are both in an on state, and the touch power terminal Touch Power outputs the touch power signal Touch Power to the power control subcircuit 512 via the third transistor M3. Therefore, the connection structure of the transistors in the power switching subcircuit 511 enables switching output of the power signal. Furthermore, transistors have the advantages of easy control, low voltage drop, and fast response speed. The power switching subcircuit 511 can reduce the voltage drop of the power signal output to the power control subcircuit 512, thereby stabilizing the voltage of the power signal output to the power control subcircuit 512.

[0124] FIG6A is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

[0125] 6A , the driving circuit 610 a includes a power switching subcircuit 611 and a power control subcircuit 612 . The power switching subcircuit 611 includes a display driving unit 6111 and a touch driving unit 6112 .

[0126] In the embodiment of the present disclosure, the power switching subcircuit 611 and the power control subcircuit 612 are similar to the power switching subcircuit 111 and the power control subcircuit 112 mentioned above, respectively; the display driving unit 6111 and the touch driving unit 6112 are similar to the display driving unit 2111 and the touch driving unit 2112 mentioned above, respectively. For the sake of simplicity, the same parts will not be repeated here in this disclosure.

[0127] In the embodiment of the present disclosure, the display driving unit 6111 includes a first transistor M1. The first transistor M1 is a PMOS transistor.

[0128] In the embodiment of the present disclosure, the gate of the first transistor M1 is electrically connected to the control signal terminal GPIO, the drain of the first transistor M1 is electrically connected to the display power terminal Display Power, and the source of the first transistor M1 is electrically connected to the power control sub-circuit 612.

[0129] In the embodiment of the present disclosure, the touch driving unit 6112 includes a second transistor M2, a third transistor M3, and a fourth transistor M4. The second transistor M2 is an NMOS transistor, and the fourth transistor M4 and the third transistor M3 are PMOS transistors.

[0130] In the embodiment of the present disclosure, the gate of the second transistor M2 is electrically connected to the control signal terminal GPIO, the drain of the second transistor M2 is electrically connected to the display power terminal Display Power, and the source of the second transistor M2 is electrically connected to the voltage terminal GND. The gate of the third transistor M3 is electrically connected to the display power terminal Display Power, the drain of the third transistor M3 is electrically connected to the power control sub-circuit 612, and the source of the third transistor M3 is electrically connected to the source of the fourth transistor M4. The gate of the fourth transistor M4 is electrically connected to the display power terminal Display Power, and the drain of the fourth transistor M4 is electrically connected to the touch power terminal Touch Power.

[0131] In the embodiment of the present disclosure, the touch drive unit 6112 further includes a resistor R. A first end of the resistor R is electrically connected to the display power terminal Display Power, and a second end of the resistor R is electrically connected to the gate of the third transistor M3. A display power signal Display Power can be applied to the gate of the third transistor M3 via the resistor R. The voltage terminal GND can be a ground terminal, and the voltage of the voltage terminal GND can be 0V. The resistor R can divide the touch power signal Touch Power provided by the touch power terminal Touch Power to prevent a short circuit when the second transistor M2 is turned on.

[0132] In the embodiment of the present disclosure, the driving circuit 610 further includes a capacitor C. A first end of the capacitor C is electrically connected to the power control subcircuit 612, and a second end of the capacitor C is electrically connected to the voltage terminal GND. The capacitor C can stabilize the power signal input to the power control subcircuit 612.

[0133] In the embodiment of the present disclosure, the voltage of the control signal GPIO provided by the control signal terminal GPIO is related to the power supply state of the display power terminal Display Power.

[0134] In the embodiment of the present disclosure, when the display power supply terminal Display Power is in the power supply state, the level of the control signal GPIO is low. The first transistor M1 is a PMOS transistor, and the second transistor M2 is an NMOS transistor. Under the control of the low level of the control signal GPIO, the first transistor M1 is in the on state, and the second transistor M2 is in the off state. The display power supply signal Display Power is also applied to the gate of the third transistor M3, the gate of the fourth transistor M4, and the drain of the second transistor M2 through the resistor R. The gate voltage of the third transistor M3 and the gate voltage of the fourth transistor M4 gradually increase. Since the third transistor M3 is a PMOS transistor, the third transistor M3 and the fourth transistor M4 are in the off state.

[0135] In this case, the second transistor M2, the third transistor M3, and the fourth transistor M4 in the touch driving unit 6112 are all in the off state, and the first transistor M1 in the display driving unit 6111 is in the on state. Therefore, when the display power terminal Display Power and the touch power terminal Touch Power are both in the power supply state, the display power signal Display Power is output to the power control sub-circuit 612 through the first transistor M1.

[0136] In the embodiment of the present disclosure, when the display power supply terminal Display Power is in a power-off state, the level of the control signal GPIO is a high level. The first transistor M1 is a PMOS transistor, and the second transistor M2 is an NMOS transistor. Under the control of the high level of the control signal GPIO, the first transistor M1 is in an off state, and the second transistor M2 is in an on state. When the second transistor M2 is in an on state, due to the action of the resistor R, the voltage GND is applied to the gate of the third transistor M3 and the gate of the fourth transistor M4 through the second transistor M2. Because the third transistor M3 and the fourth transistor M4 are PMOS transistors, under the control of the low level voltage GND, the third transistor M3 and the fourth transistor M4 are in an on state.

[0137] In this case, the second transistor M2, the third transistor M3, and the fourth transistor M4 in the touch driving unit 6112 are all in the on state, and the first transistor M1 in the display driving unit 6111 is in the off state. Therefore, when the display power terminal Display Power is in the power-off state and the touch power terminal Touch Power is in the power-on state, the touch power signal Touch Power is output to the power control sub-circuit 612 through the third transistor M3 and the fourth transistor M4.

[0138] In the embodiment of the present disclosure, when the display power supply terminal Display Power is in the power supply state, the level of the control signal GPIO is low. The first transistor M1 is a PMOS transistor, and the second transistor M2 is an NMOS transistor. Under the control of the low level of the control signal GPIO, the first transistor M1 is in the on state, and the second transistor M2 is in the off state. The display power supply signal Display Power is also applied to the gate of the third transistor M3 and the gate of the fourth transistor M4 through the resistor R. The gate voltage of the third transistor M3 and the gate voltage of the fourth transistor M4 gradually increase. Since the third transistor M3 and the fourth transistor M4 are PMOS transistors, the third transistor M3 and the fourth transistor M4 are in the off state.

[0139] In this case, the second transistor M2, the third transistor M3, and the fourth transistor M4 in the touch driving unit 6112 are all in the off state, and the first transistor M1 in the display driving unit 6111 is in the on state. Therefore, when the display power terminal Display Power is in the power supply state and the touch power terminal Touch Power is in the power-off state, the display power signal Display Power is output to the power control sub-circuit 612 through the first transistor M1.

[0140] When the touch power supply terminal Touch Power is in a power-off state, the touch panel may be in an off state (not operating). When the display power signal Display Power is output to the power control sub-circuit 612 through the first transistor M1, the display power signal Display Power is also applied to the source of the fourth transistor M4 through the parasitic diode of the third transistor M3. At this time, the display power signal Display Power is blocked by the parasitic diode of the fourth transistor M4. Therefore, the display power signal Display Power does not leak to the touch power supply terminal Touch Power through the third transistor M3 and the fourth transistor M4. This avoids the phenomenon of the voltage of the touch power supply terminal Touch Power increasing due to leakage, which can prevent the touch panel from erroneously starting up.

[0141] According to the embodiment of the present disclosure, when the display power terminal Display Power is supplying power, the first transistor M1 is in an on state, the second transistor M2, the third transistor M3, and the fourth transistor M4 are all in an off state, and the display power signal Display Power is output to the power control sub-circuit 612 via the first transistor M1. When the display power terminal Display Power is powered off, the first transistor M1 is in an off state, the second transistor M2, the third transistor M3, and the fourth transistor M4 are all in an on state, and the touch power terminal Touch Power outputs the touch power signal Touch Power to the power control sub-circuit 612 via the third transistor M3 and the fourth transistor M4. Therefore, the connection structure of the transistors in the power switching sub-circuit 511 enables switching output of the power signal. Furthermore, transistors have the advantages of easy control, low voltage drop, and fast response speed. The power switching sub-circuit 611 can reduce the voltage drop of the power signal output to the power control sub-circuit 612, thereby stabilizing the voltage of the power signal output to the power control sub-circuit 612.

[0142] In addition, the source of the third transistor M3 is electrically connected to the source of the fourth transistor M4, and the third transistor M3 and the fourth transistor M4 form an inverter. This can prevent leakage in the third transistor M3 and the fourth transistor M4 when the display power supply terminal Display Power is powered on and the touch power supply terminal Touch Power is powered off. The drain of the first transistor M1 is electrically connected to the display power supply terminal Display Power, which can prevent leakage in the first transistor M1 when the display power supply terminal Display Power is powered off and the touch power supply terminal Touch Power is powered on.

[0143] FIG. 6B is a schematic diagram of the layout of the driving circuit in FIG. 6A .

[0144] As shown in FIG6B , the gate G1 of the first transistor M1 is electrically connected to the control signal terminal GPIO, the drain D1 of the first transistor M1 is electrically connected to the display power terminal Display Power, and the source S1 of the first transistor M1 is electrically connected to the power control sub-circuit 612 .

[0145] A gate G2 of the second transistor M2 is electrically connected to the control signal terminal GPIO, a drain D2 of the second transistor M2 is electrically connected to the display power terminal Display Power, and a source S2 of the second transistor M2 is electrically connected to the voltage terminal GND.

[0146] The gate G3 of the third transistor M3 is electrically connected to the display power terminal Display Power, the drain D3 of the third transistor M3 is electrically connected to the power control sub-circuit 612, and the source S3 of the third transistor M3 is electrically connected to the source S4 of the fourth transistor M4.

[0147] A gate electrode G4 of the fourth transistor M4 is electrically connected to the display power terminal Display Power, and a drain electrode D4 of the fourth transistor M4 is electrically connected to the touch power terminal Touch Power.

[0148] A first end of the resistor R is electrically connected to the display power terminal Display Power, and a second end of the resistor R is electrically connected to the gate G3 of the third transistor M3.

[0149] FIG7 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

[0150] As shown in FIG. 7 , in embodiment 700 , a driving circuit 710 is electrically connected to a source driving circuit 720 , and the driving circuit 710 supplies power to the source driving circuit 720 so that the source driving circuit 720 can operate normally.

[0151] In the embodiment of the present disclosure, the driver circuit 710 includes a power switching subcircuit 711, a power control subcircuit 712, a timing control subcircuit 713, and a signal control subcircuit 714. The power switching subcircuit 711 and the power control subcircuit 712 are similar to the power switching subcircuit 111 and the power control subcircuit 112 described above, and for the sake of brevity, they are not further described herein.

[0152] In the embodiment of the present disclosure, the timing control sub-circuit 713 is electrically connected to the power control sub-circuit 712 and the source driver circuit 720. For example, the timing control sub-circuit 713 may be a timing controller (TCON).

[0153] Driven by the touch power signal Touch Power or the display power signal Display Power, the power control sub-circuit 712 outputs a sequential power signal to the timing control sub-circuit 713. Driven by the sequential power signal from the power control sub-circuit 712, the synchronization signal SYNC is output.

[0154] In the embodiment of the present disclosure, the signal control subcircuit 714 is electrically connected to the timing control subcircuit 713, the source driver circuit 720, and the touch power terminal Touch Power. For example, the signal control subcircuit 714 can be a microcontroller unit (MCU).

[0155] The signal control sub-circuit 714 receives the touch power signal and, driven by the touch power signal, outputs a switching signal based on the synchronization signal SYNC. The switching signal is used to control the source driver circuit 720 to switch between the display driving mode and the touch driving mode.

[0156] In the embodiment of the present disclosure, in the display drive mode, the source driver circuit 720 can provide a data signal to the display panel. In the touch drive mode, the source driver circuit 720 can collect touch operations from the touch panel. For example, the synchronization signal SYNC can be a pulse signal. When the synchronization signal SYNC is at a high level, the switching signal output by the signal control subcircuit 714 can control the source driver circuit 720 to enter the display drive mode. When the synchronization signal SYNC is at a low level, the switching signal output by the signal control subcircuit 714 can control the source driver circuit 720 to enter the touch drive mode.

[0157] In the disclosed embodiment, the power switching sub-circuit 711 outputs the touch power signal Touch Power or the display power signal Display Power to the power control sub-circuit 712. The power control sub-circuit 712 can convert the received power signal into a timing power signal required for the operation of the timing control sub-circuit 713 and a source power signal required for the operation of the source driver circuit 720. The touch power terminal Touch Power can directly output the touch power signal Touch Power to the signal control sub-circuit 714 for operation.

[0158] In the embodiment of the present disclosure, the timing control sub-circuit 713 may also output a display signal to the source driver circuit 720. The source driver circuit 720 may generate a data signal based on the display signal, and the display panel may display an image based on the data signal.

[0159] In the disclosed embodiment, the source driver circuit 720, in touch drive mode, can collect sensor signals from the touch panel. Sensor signals are signals generated by the touch panel based on received touch operations. Based on the sensor signals, the source driver circuit 720 generates touch signals and sends the touch signals to the signal control subcircuit 714. The signal control subcircuit 714 processes the touch signals and sends the data processing results to the system, thereby completing the touch point reporting action.

[0160] FIG8 is a schematic structural diagram of a signal control subcircuit according to an embodiment of the present disclosure.

[0161] As shown in FIG8 , the signal control sub-circuit 814 may provide a control signal GPIO outputted by the control signal terminal GPIO.

[0162] In the disclosed embodiment, a first terminal of the signal control subcircuit 814 is electrically connected to a first terminal of a first resistor R1 and a first terminal of a second resistor R2. A second terminal of the first resistor R1 is electrically connected to a display power terminal Display Power. A second terminal of the second resistor R2 is electrically connected to a voltage terminal GND.

[0163] The second end of the signal control subcircuit 814 is electrically connected to the first end of the third resistor R3 and the control signal terminal GPIO. The second end of the third resistor R3 is electrically connected to the touch power terminal Touch Power. The second end of the third resistor R3 is also electrically connected to the first end of the fourth resistor R4. The second end of the fourth resistor R4 is electrically connected to the voltage terminal GND.

[0164] In the embodiment of the present disclosure, the first resistor R1 and the second resistor R2 can be used to divide the voltage of the display power signal Display Power provided by the display power terminal Display Power. The third resistor R3 and the fourth resistor R4 can be used to divide the voltage of the touch power signal Touch Power provided by the touch power terminal Touch Power. This can prevent the signal control subcircuit 814 from short-circuiting when the display power terminal Display Power and / or the touch power signal Touch Power are in a powering state.

[0165] For example, the resistance of the first resistor R1 and the third resistor R3 may be 4.7KΩ. The resistance of the second resistor R2 and the fourth resistor R4 may be 200KΩ. The present disclosure does not limit the resistance of the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4.

[0166] In the disclosed embodiment, the signal control subcircuit 814 can output an electrical signal having a high level or a low level depending on the power-on or power-off state of the display power terminal Display Power. For example, when the display power terminal Display Power is in the power-on state, the signal control subcircuit 814 outputs an electrical signal having a high level to indicate that the display power signal Display Power is being output. In this case, the voltage of the electrical signal is consistent with the voltage of the display power signal Display Power output by the display power terminal Display Power. When the display power terminal Display Power is in the power-off state, the signal control subcircuit 814 outputs an electrical signal having a low level to indicate that the display power signal Display Power is not being output. In this case, the voltage of the electrical signal can be 0V.

[0167] In the disclosed embodiment, the signal control subcircuit 814 receives the display power signal Display Power and, based on the display drive signal Display Power, outputs a control signal GPIO. For example, the power switching subcircuit can output the touch power signal Touch Power or the display power signal Display Power to the power control subcircuit based on the control signal GPIO.

[0168] For example, when the display power terminal Display Power is in a power-off state, the control signal GPIO output by the signal control subcircuit 814 has a high level. When the display power terminal Display Power is in a powering state, the control signal GPIO output by the signal control subcircuit 814 has a low level.

[0169] In the embodiment of the present disclosure, the timing control sub-circuit 814 further receives a control signal GPIO and outputs a display signal to the source driver circuit based on the control signal GPIO. The source driver circuit can output a data signal based on the display signal.

[0170] For example, when the control signal GPIO is determined to be at a high level, the display power supply terminal Display Power is in a powered-down state, and the display panel does not display any image. Therefore, the timing control subcircuit 814 can output a display signal to cause the source driver circuit to output a data signal, thereby controlling the display panel to display an entirely black image, thereby reducing operating losses in the source driver circuit. For example, the voltage of the data signal can indicate a grayscale value of 0.

[0171] In the disclosed embodiment, under the control of the control signal GPIO, the timing control subcircuit 814 can also output a clock control signal. The clock control signal is used to control the output state of the clock signal. For example, if the control signal GPIO is determined to be high, the timing control subcircuit 814 can disable the clock signal in the display panel based on the clock control signal. For example, the clock signal in the gate driver circuit can be disabled so that the gate driver circuit does not scan the pixel units in the display panel. This can reduce losses in the gate driver circuit.

[0172] FIG9 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

[0173] As shown in FIG9 , the driving circuit 910 includes a power switching subcircuit 911, a power control subcircuit 912, a timing control subcircuit 913, and a signal control subcircuit 914. The power switching subcircuit 911, the power control subcircuit 912, the timing control subcircuit 913, and the signal control subcircuit 914 are similar to the power switching subcircuit 711, the power control subcircuit 712, the timing control subcircuit 713, and the signal control subcircuit 714 described above, respectively. For the sake of brevity, similar parts are not repeated here in this disclosure.

[0174] In the disclosed embodiment, the signal control subcircuit 914 receives a sleep signal, Sleep, which may be from a mainboard. The sleep signal may be generated by the mainboard upon receipt of a sleep instruction. The sleep instruction may instruct the display driven by the source driver circuit to enter a sleep state. For example, when the mainboard sends the sleep signal Sleep to the signal control subcircuit 914, the mainboard may also control the display power supply terminal Display Power to be powered down based on the sleep signal Sleep. In this case, the display panel enters a sleep state and the screen is turned off.

[0175] In one example, although the mainboard controls the display power terminal Display Power to be in a power-off state based on the sleep signal Sleep, the touch power terminal Touch Power may still be in a power supply state. Therefore, the power switching sub-circuit 911 can output the touch power signal Touch Power to the power control sub-circuit 912 to power the power control sub-circuit 912. The power control sub-circuit 912 converts the received touch power signal Touch Power into a timing power signal required for the operation of the timing control sub-circuit 913. This causes the timing control sub-circuit 913 to output a display signal to the source driver circuit, causing the source driver circuit to output a data signal to the display panel, resulting in the display panel being unable to turn off the screen and thus being unable to enter the sleep state.

[0176] To overcome the above-mentioned problems, in an embodiment of the present disclosure, the signal control subcircuit 914 can receive a sleep signal Sleep and output a control signal GPIO based on the sleep signal Sleep. At this time, the signal control subcircuit 914 can control the control signal GPIO to be low based on the sleep signal Sleep. The signal control subcircuit 914 outputs the control signal GPIO with a low level to the power switching subcircuit 911. Under the control of the control signal GPIO with a low level, the power switching subcircuit 911 is in an open circuit state. At this time, the power switching subcircuit 911 cannot output the received touch power signal Touch Power to the power control subcircuit 912, and the power control subcircuit 912 cannot work normally, so that the timing control subcircuit 913 cannot drive the source driver circuit. Therefore, under the control of the sleep signal Sleep, the display panel can enter a sleep state.

[0177] For example, in the embodiment shown in FIG8 , the signal control subcircuit 814 can output a control signal GPIO having a corresponding level based on the signal output state of the display power terminal Display Power. For example, when the display power terminal Display Power is in a power-off state, the control signal GPIO output by the signal control subcircuit 814 has a high level. When the display power terminal Display Power is in a powering state, the control signal GPIO output by the signal control subcircuit 814 has a low level.

[0178] In the disclosed embodiment, the sleep signal "Sleep" has a higher priority than the signal output state of the display power terminal "Display Power." When the signal control sub-circuit 914 receives the sleep signal "Sleep," it controls the control signal "GPIO" to a low level based solely on the sleep signal "Sleep," thereby preventing the power switching sub-circuit 911 from outputting the touch power signal "Touch Power" and the display power signal "Display Power."

[0179] For example, referring back to FIG6A , although the display power terminal Display Power is in a power-off state, when the signal control sub-circuit receives the sleep signal Sleep, the level of the control signal GPIO is low.

[0180] The first transistor M1 is a PMOS transistor, and the second transistor M2 is an NMOS transistor. Under the control of the low level of the control signal GPIO, the first transistor M1 is in the on state, and the second transistor M2 is in the off state. Although the first transistor M1 is in the on state, because the display power supply terminal Display Power is in the off state, the display power signal Display Power is not applied to the power control sub-circuit 612 through the first transistor M1.

[0181] When the second transistor M2 is in the off state, since the display power terminal Display Power is in the power-off state, the voltages of the gates of the third transistor M3 and the fourth transistor M4 are in a floating state, and the third transistor M3 and the fourth transistor M4 are in the off state. Therefore, the touch power signal Touch Power is not applied to the power control sub-circuit 612 through the third transistor M3 and the fourth transistor M4.

[0182] In this case, the second transistor M2, the third transistor M3, and the fourth transistor M4 are all in the off state, and the first transistor M1 is in the on state. Therefore, when the display power terminal Display Power is in the power-off state and the touch power terminal Touch Power is in the power-on state, neither the touch power signal Touch Power nor the display power signal Display Power is output to the power control sub-circuit 612. Therefore, the display panel can enter the sleep state.

[0183] In the disclosed embodiment, the signal control subcircuit 914 may also receive a sleep termination signal. After receiving the sleep termination signal, the signal control subcircuit 914 controls the level of the control signal GPIO based on the signal output state of the display power supply terminal Display Power. For example, when the display power supply terminal Display Power is in a power-off state, the control signal GPIO output by the signal control subcircuit 914 is at a high level. When the display power supply terminal Display Power is in a powering state, the control signal GPIO output by the signal control subcircuit 914 is at a low level.

[0184] In the disclosed embodiment, the signal control subcircuit 914 receives the sleep signal "Sleep" and, based on the sleep signal "Sleep", outputs a sleep mode signal "Sleep Mode". The timing control subcircuit 913 outputs a display signal to the source driver circuit based on the sleep mode signal "Sleep Mode". The display signal is used to control the source driver circuit to output a data signal, and the display signal controls the grayscale value indicated by the data signal to be 0.

[0185] For example, under the control of the sleep mode signal, the timing control sub-circuit 913 can control the display panel to display no image or a black image. Therefore, the timing control sub-circuit 914 can output a display signal to cause the source driver circuit to output a data signal to control the display panel to display an entirely black image, thereby reducing operating losses of the source driver circuit. For example, the voltage of the data signal can indicate a grayscale value of 0.

[0186] In the disclosed embodiment, the signal control subcircuit 914 can control the power switching subcircuit 911 to not output a power signal after outputting the sleep mode signal "Sleep Mode" to the timing control subcircuit 913. When the timing control subcircuit 913 controls the display panel to display a black screen based on the sleep mode signal "Sleep Mode," the power switching subcircuit 911 controls the display panel to enter a sleep state. This can prevent problems such as screen flickering when the display panel switches from a normal display screen to a black screen.

[0187] FIG10 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.

[0188] As shown in FIG. 10 , a display device 1000 includes a driving circuit 1010 , a source driving circuit 1020 , a mainboard 1030 , and a display panel 1040 .

[0189] In the embodiment of the present disclosure, the motherboard 1030 outputs a display power signal and a touch power signal. For example, the motherboard 1030 can serve as a display power terminal Display Power that provides the display power signal Display Power and a touch power terminal Touch Power that provides the touch power signal Touch Power.

[0190] In the embodiment of the present disclosure, the driver circuit 1010 is electrically connected to the motherboard 1030. The driver circuit 1010 can output a source power signal 1020 based on the display power signal or the touch power signal. For example, the driver circuit 1010 can be any of the driver circuits 110, 210, 310, 410, 510, 610a, and 710 described above, and will not be further described here.

[0191] In the embodiment of the present disclosure, the source driver circuit 1020 is electrically connected to the driver circuit 1010. Under the control of the source power signal, the source driver circuit 1020 outputs the data signal. The display panel 1040 is electrically connected to the source driver circuit 1020 and displays images based on the data signal.

[0192] FIG. 11 is a schematic structural diagram of a display device according to another embodiment of the present disclosure.

[0193] As shown in FIG11 , a display device 1100 includes a driver circuit 1110, a source driver circuit 1120, a mainboard 1130, and a display panel 1140. The driver circuit 1110, the source driver circuit 1120, the mainboard 1130, and the display panel 1140 are similar to the driver circuit 1010, the source driver circuit 1020, the mainboard 1030, and the display panel 1040 described above, respectively. For the sake of brevity, these details are not repeated herein.

[0194] In the embodiment of the present disclosure, the driving circuit 1110 includes a power switching subcircuit 1111, a power control subcircuit 1112, a timing control subcircuit 1113, and a signal control subcircuit 1114. The power switching subcircuit 1111, the power control subcircuit 1112, the timing control subcircuit 1113, and the signal control subcircuit 1114 are similar to the power switching subcircuit 711, the power control subcircuit 712, the timing control subcircuit 713, and the signal control subcircuit 714 described above, respectively. For the sake of brevity, the present disclosure will not further elaborate on these details.

[0195] In the disclosed embodiment, the power switching subcircuit 1111 outputs the touch power signal Touch Power or the display power signal Display Power to the power control subcircuit 1112. The power control subcircuit 1112 can convert the received power signal into a timing power signal required for the operation of the timing control subcircuit 1113 and a source power signal required for the operation of the source driver circuit 1120. The touch power terminal Touch Power can directly output the touch power signal Touch Power to the signal control subcircuit 1114 for operation.

[0196] In the embodiment of the present disclosure, the timing control sub-circuit 1113 outputs a display signal to the source driver circuit 1120. The source driver circuit 1120 may generate a data signal Data based on the display signal, and the display panel 1140 may display an image based on the data signal Data.

[0197] In the embodiment of the present disclosure, the display panel 1140 generates a sensor signal Sensor in response to a received touch operation. The sensor signal Sensor has a corresponding voltage value based on different touch operations. The source driver circuit 1120 collects the sensor signal and, based on the sensor signal Sensor, outputs a touch signal to the driver circuit 1110. The driver circuit 1110 receives and processes the touch signal to obtain information related to the touch operation. For example, the information related to the touch operation may include the location information of the touch operation.

[0198] FIG12 is a flowchart of a driving method according to an embodiment of the present disclosure.

[0199] As shown in FIG. 12 , the driving method may include operations S1210 to S1220 .

[0200] In operation S1210 , a touch power signal from the touch power terminal or a display power signal from the display power terminal is output based on signal output states of the touch power terminal and the display power terminal.

[0201] In operation S1220 , driven by the touch power signal or the display power signal, a source power signal is output to a source driving circuit.

[0202] In the embodiment of the present disclosure, operations S1210 to S1220 are similar to the operations performed by the driving circuit 110 described above, and are not described again herein.

[0203] In an embodiment of the present disclosure, based on the signal output states of the touch power supply terminal and the display power supply terminal, outputting a touch power signal from the touch power supply terminal or a display power signal from the display power supply terminal includes: outputting the display power signal when it is determined that both the touch power signal and the display power signal are received; outputting the touch power signal when it is determined that only the touch power signal is received; and outputting the display power signal when it is determined that only the display power signal is received.

[0204] In an embodiment of the present disclosure, outputting a touch power signal from the touch power terminal or a display power signal from the display power terminal based on the signal output status of the touch power terminal and the display power terminal includes: outputting a control signal based on the signal output status of the touch power terminal and the display power terminal; and outputting the display power signal or the touch power signal under the control of the control signal.

[0205] In an embodiment of the present disclosure, based on the signal output status of the touch power supply terminal and the display power supply terminal, outputting a control signal includes: when it is determined that both the touch power supply signal and the display power supply signal are received, outputting a control signal with a first level; when it is determined that only the touch power supply signal is received, outputting a control signal with a second level; and when it is determined that only the display power supply signal is received, outputting a control signal with a first level.

[0206] For example, the first level is a low level, and the second level is a high level.

[0207] In an embodiment of the present disclosure, under the control of a control signal, outputting a display power signal or a touch power signal includes: outputting a display power signal when the control signal is determined to be at a first level; and outputting a touch power signal when the control signal is determined to be at a second level.

[0208] In an embodiment of the present disclosure, the driving method further includes: under the control of a control signal, outputting a display signal, the display signal being used to control the source driving circuit to output a data signal; wherein, when the control signal is determined to be at the second level, the display signal controls the grayscale value indicated by the data signal to be 0.

[0209] In an embodiment of the present disclosure, the driving method further includes: under the control of the control signal, outputting a clock control signal, the clock control signal being used to control the output state of the clock signal; wherein, when it is determined that the control signal is at the second level, turning off the clock signal based on the clock control signal.

[0210] In an embodiment of the present disclosure, the driving method further includes: outputting a control signal having a first level based on a received sleep signal, wherein the sleep signal instructs the display power terminal not to output a display power signal.

[0211] In an embodiment of the present disclosure, the driving method further includes: outputting a sleep mode signal based on a received sleep signal; and outputting a display signal under the control of the sleep mode signal, wherein the display signal is used to control the source driving circuit to output a data signal; wherein, under the control of the sleep mode signal, the display signal controls the grayscale value indicated by the data signal to be 0.

[0212] In an embodiment of the present disclosure, the driving method further includes: outputting a timing power signal under the drive of a touch power signal or a display power signal; outputting a synchronization signal under the drive of the timing power signal; and outputting a switching signal based on the synchronization signal, the switching signal being used to control the source driving circuit to switch between the display driving mode and the touch driving mode.

[0213] The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, program segment, or a part of code, and the above-mentioned module, program segment, or a part of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in an order different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0214] Those skilled in the art will appreciate that various combinations and / or combinations of features described in the various embodiments and / or claims of this disclosure may be made, even if such combinations or combinations are not explicitly described in this disclosure. In particular, various combinations and / or combinations of features described in the various embodiments and / or claims of this disclosure may be made, without departing from the spirit and teachings of this disclosure. All such combinations and / or combinations fall within the scope of this disclosure.

[0215] The embodiments of the present disclosure are described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although each embodiment has been described separately above, this does not mean that the measures in each embodiment cannot be used in combination to advantage. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A driving circuit for driving a source driving circuit, comprising: a power switching subcircuit, electrically connected to the touch power terminal and the display power terminal, and configured to output a touch power signal from the touch power terminal or a display power signal from the display power terminal based on signal output states of the touch power terminal and the display power terminal; as well as The power control subcircuit is electrically connected to the power switching subcircuit and the source driving circuit, and is configured to output a source power signal to the source driving circuit under the drive of the touch power signal or the display power signal.

2. The driving circuit according to claim 1, wherein: The power switching subcircuit is configured as follows: When it is determined that the touch power signal and the display power signal are received, outputting the display power signal; When it is determined that only the touch power signal is received, outputting the touch power signal; as well as In a case where it is determined that only the display power signal is received, the display power signal is output.

3. The driving circuit according to claim 1, wherein: The power switching subcircuit includes a display driving unit and a touch driving unit; The display driving unit is electrically connected to the display power supply terminal, the power supply control subcircuit and the control signal terminal, and is configured to output the display power supply signal to the power supply control subcircuit under the control of the control signal from the control signal terminal; and The touch driving unit is electrically connected to the touch power supply terminal, the power control subcircuit and the control signal terminal, and is configured to output the touch power supply signal to the power control subcircuit under the control of the control signal.

4. The driving circuit according to claim 3, wherein: The display driving unit includes a first transistor; The gate of the first transistor is electrically connected to the control signal terminal, the drain of the first transistor is electrically connected to the display power terminal, and the source of the first transistor is electrically connected to the power control sub-circuit.

5. The driving circuit according to claim 3, wherein: The touch driving unit includes a second transistor, a third transistor and a fourth transistor; The gate of the second transistor is electrically connected to the control signal terminal, the drain of the second transistor is electrically connected to the gate of the fourth transistor, and the source of the second transistor is electrically connected to the voltage terminal; The gate of the third transistor is electrically connected to the gate of the fourth transistor, the drain of the third transistor is electrically connected to the power control subcircuit, and the source of the third transistor is electrically connected to the source of the fourth transistor; and The gate and the drain of the fourth transistor are both electrically connected to the touch power supply terminal.

6. The driving circuit according to claim 3, wherein: The touch control driving unit is also electrically connected to the display power supply terminal, and is configured to output the touch control power supply signal to the power control sub-circuit under the control of the control signal and the display power supply signal.

7. The driving circuit according to claim 6, wherein: The touch driving unit includes a second transistor and a third transistor; wherein the gate of the second transistor is electrically connected to the control signal terminal, the drain of the second transistor is electrically connected to the display power terminal, and the source of the second transistor is electrically connected to the voltage terminal; and The gate of the third transistor is electrically connected to the display power supply terminal, the drain of the third transistor is electrically connected to the power control subcircuit, and the source of the third transistor is electrically connected to the touch power supply terminal.

8. The driving circuit according to claim 6, wherein: The touch driving unit includes a second transistor, a third transistor and a fourth transistor; Wherein, the gate of the second transistor is electrically connected to the control signal terminal, the drain of the second transistor is electrically connected to the display power terminal, and the source of the second transistor is electrically connected to the voltage terminal; The gate of the third transistor is electrically connected to the display power supply terminal, the drain of the third transistor is electrically connected to the power control subcircuit, and the source of the third transistor is electrically connected to the source of the fourth transistor; and The gate of the fourth transistor is electrically connected to the display power supply terminal, and the drain of the fourth transistor is electrically connected to the touch power supply terminal.

9. The driving circuit according to claim 1, further comprising: A timing control subcircuit, electrically connected to the power control subcircuit and the source drive circuit, is configured as Driven by the timing power signal from the power control subcircuit, output a synchronization signal; as well as a signal control subcircuit, electrically connected to the timing control subcircuit, the source driving circuit and the touch power supply terminal, configured to receive the touch power supply signal, and under the drive of the touch power supply signal, output a switching signal based on the synchronization signal, wherein the switching signal is used to control the source driving circuit to switch between a display driving mode and a touch driving mode; Wherein, the power control sub-circuit is further configured to output the timing power signal to the timing control sub-circuit under the drive of the touch power signal or the display power signal.

10. The driving circuit according to claim 9, wherein: The signal control subcircuit is also configured to receive the display power signal and output a control signal based on the display drive signal; wherein the power switching subcircuit outputs the touch power signal or the display power signal to the power control subcircuit based on the control signal.

11. The driving circuit according to claim 10, wherein: The timing control subcircuit is further configured to receive the control signal and output a display signal to the source driving circuit based on the control signal.

12. The driving circuit according to claim 9, wherein: The signal control subcircuit is further configured to receive a sleep signal and output a control signal based on the sleep signal; wherein the power switching subcircuit is in an off-circuit state based on the control signal.

13. The driving circuit according to claim 9, wherein: The signal control subcircuit is also configured to receive a sleep signal, and output a sleep mode signal based on the sleep signal; wherein the timing control subcircuit outputs a display signal to the source driver circuit based on the sleep mode signal; the display signal is used to control the source driver circuit to output a data signal, and the display signal controls the grayscale value indicated by the data signal to be 0.

14. A display device comprising: A mainboard, configured to output the display power signal and the touch power signal; The driving circuit according to any one of claims 1 to 13, electrically connected to the main board, and configured to output the source power signal based on the display power signal or the touch power signal; The source driving circuit is electrically connected to the driving circuit and is configured to control the source power supply signal. Under control, output data signal; as well as The display panel is electrically connected to the source driving circuit and is configured to display a picture based on the data signal.

15. The display device according to claim 14, wherein: The display panel is further configured to generate a sensor signal in response to a received touch operation; The source driving circuit is further configured to collect the sensor signal and output a touch signal based on the sensor signal; as well as The driving circuit is further configured to receive and process the touch signal to obtain information related to the touch operation.

16. A driving method, applied to the driving circuit according to any one of claims 1 to 13, comprising: Outputting a touch power signal from the touch power terminal or a display power signal from the display power terminal based on signal output states of the touch power terminal and the display power terminal; as well as Driven by the touch power signal or the display power signal, a source power signal is output to the source driving circuit.

17. The driving method according to claim 16, wherein: The outputting of the touch power signal from the touch power terminal or the display power signal from the display power terminal based on the signal output states of the touch power terminal and the display power terminal comprises: When it is determined that the touch power signal and the display power signal are received, outputting the display power signal; When it is determined that only the touch power signal is received, outputting the touch power signal; and In a case where it is determined that only the display power signal is received, the display power signal is output.

18. The driving method according to claim 16, wherein: The outputting of the touch power signal from the touch power terminal or the display power signal from the display power terminal based on the signal output states of the touch power terminal and the display power terminal comprises: outputting a control signal based on the signal output states of the touch power supply terminal and the display power supply terminal; and Under the control of the control signal, the display power signal or the touch power signal is output.

19. The driving method according to claim 18, wherein: The output control signal based on the signal output status of the touch power supply terminal and the display power supply terminal includes: When it is determined that the touch power signal and the display power signal are received, outputting the control signal having a first level; When it is determined that only the touch power signal is received, outputting the control signal having a second level; and In a case where it is determined that only the display power signal is received, the control signal having a first level is output.

20. The driving method according to claim 19, wherein: The outputting of the display power signal or the touch power signal under the control of the control signal comprises: When determining that the control signal is at the first level, outputting the display power signal; and When it is determined that the control signal is at the second level, the touch power signal is output.

21. The driving method according to claim 18, further comprising: Under the control of the control signal, a display signal is output, and the display signal is used to control the source driving circuit to output a data signal; wherein, when it is determined that the control signal is at the second level, the display signal controls the grayscale value indicated by the data signal to be 0.

22. The driving method according to claim 18, further comprising: Under the control of the control signal, a clock control signal is output, and the clock control signal is used to control the output state of the clock signal; wherein, when it is determined that the control signal is at the second level, the clock signal is turned off based on the clock control signal.

23. The driving method according to claim 16, further comprising: Based on the received sleep signal, a control signal with a first level is output, wherein the sleep signal instructs the display power supply terminal not to output the display power supply signal.

24. The driving method according to claim 16, further comprising: outputting a sleep mode signal based on the received sleep signal; as well as Under the control of the sleep mode signal, a display signal is output, and the display signal is used to control the source driving circuit to output a data signal; wherein, under the control of the sleep mode signal, the display signal controls the gray value indicated by the data signal to be 0.

25. The driving method according to claim 16, further comprising: Driven by the touch power signal or the display power signal, output a timing power signal; Under the drive of the timing power supply signal, output a synchronization signal; as well as Based on the synchronization signal, a switching signal is output, and the switching signal is used to control the source driving circuit to switch between a display driving mode and a touch driving mode.

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