Driving circuit, driving method and display device

Abstract

The present disclosure relates to the technical field of displaying, and provides a driving circuit, a driving method and a display device. The driving circuit is used for driving a source driving circuit. The driving circuit comprises: a power switching sub-circuit, which is electrically connected to a touch power end and a display power end and is configured to output a touch power signal from the touch power end or a display power signal from the display power end on the basis of signal output states of the touch power end and the display power end; and a power control sub-circuit, which is electrically connected to the power switching sub-circuit and the source driving circuit and is configured to be driven by the touch power signal or the display power signal to output a source power signal to the source driving circuit.

Description

Drive Circuit, Driving Method, and Display Device Technical Field

[0001] The present disclosure relates to the field of display technologies, and particularly to a drive circuit, a driving method, and a display device. Background Art

[0002] An in-cell touch display screen is a combined design of display technology and touch technology, which integrates a touch panel and a display panel. This design can reduce the impact of display noise on touch and improve the touch effect.

[0003] In this combined design, the source driver circuit participates in the working processes of the display panel and the touch panel, and the source driver circuit is powered by a display power supply. When the display panel is not working, the display power supply does not supply power. However, this will cause the source driver circuit to malfunction, resulting in the touch panel also being unable to work properly.

[0004] Summary of the Invention

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

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

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

[0008] For example, the power supply switching sub-circuit 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 supply control sub-circuit, and a control signal terminal, and is configured to output the display power signal to the power supply control sub-circuit under the control of a control signal from the control signal terminal; and the touch driving unit is electrically connected to the touch power supply terminal, the power supply control sub-circuit, and the control signal terminal, and is configured to output the touch power signal to the power supply control sub-circuit 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 supply terminal, and the source of the first transistor is electrically connected to the power supply control sub - circuit.

[0010] 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 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 supply control sub - circuit, 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.

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

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

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

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

[0018] For example, the signal control sub - circuit is further configured to receive a sleep signal and output a sleep - mode signal based on the sleep signal; wherein the timing control sub - circuit 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 gray - scale 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 - control power signal; a driving circuit provided by an embodiment of the present disclosure, electrically connected to the main board and configured to output a source power signal based on the display power signal or the touch - control power signal; a source driver circuit electrically connected to the driving circuit and configured to output a data signal under the control of the source power signal; and a display panel electrically connected to the source driver circuit and configured to perform screen display based on the data signal.

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

[0021] According to a third aspect, the present disclosure provides a driving method applied to the driving circuit provided by an embodiment of the present disclosure, including: outputting a touch - control power signal from the touch - control power terminal or a display power signal from the display power terminal based on the signal output states of the touch - control power terminal and the display power terminal; and outputting a source power signal to the source driver circuit under the drive of the touch - control power signal or the display power signal.

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

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

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

[0026] For example, the driving method further includes: under the control of the control signal, outputting a display signal, where the display signal is used to control the source driver 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 gray 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, where 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.

[0028] For example, the driving method further includes: based on the received sleep signal, outputting a control signal with a first level, where the sleep signal indicates that the display power supply terminal does not output the display power supply signal.

[0029] For example, the driving method further 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 for controlling the source driver 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.

[0030] For example, 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 for controlling the source driver circuit to switch between a display driving mode and a touch driving mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG. 1 is a schematic structural diagram of a driving circuit according to an embodiment of the present disclosure;

[0032] FIG. 2 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0033] FIG. 3 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0034] FIG. 4 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0035] FIG. 5 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0036] FIG. 6A is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0037] FIG. 6B is a layout schematic diagram of the driving circuit at FIG. 6A;

[0038] FIG. 7 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0039] FIG. 8 is a schematic structural diagram of a signal control sub-circuit according to an embodiment of the present disclosure;

[0040] FIG. 9 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure;

[0041] FIG. 10 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

[0042] FIG. 11 is a schematic structural diagram of a display device according to another embodiment of the present disclosure; and

[0043] FIG. 12 is a flowchart of a driving method according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] To make the objectives, 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 with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are only a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts fall within the scope of protection of the present disclosure. It should be noted that throughout the drawings, the same elements are denoted by the same or similar reference numerals. In the following description, some specific embodiments are for descriptive purposes only and should not be construed as any limitation to the present disclosure, but merely 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 sizes and proportions, but only illustrate the content of the embodiments of the present disclosure.

[0045] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should have the ordinary meanings understood by those skilled in the art. The "first", "second", and similar terms used in the embodiments of the present disclosure do not denote any order, quantity, or importance, but are only 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 mean that two components are directly connected, or may mean that two components are connected via one or more other components. In addition, these two components may be connected or coupled by wired or wireless means.

[0047] In addition, in the description of the embodiments of the present disclosure, the terms "first level" and "second level" are only used to distinguish the different amplitudes of two levels. For example, in the following description, the "first level" is taken as a relatively low level and the "second level" is taken as a relatively high level for illustration. Those skilled in the art can understand that the present disclosure is not limited thereto.

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

[0049] In an embedded touch display screen, the source driver circuit is powered by a display power supply. When the display panel is not working, the display power supply is not powered. For example, when there is no image display on the display panel, the display power supply may be temporarily not powered. Therefore, this will cause the source driver circuit to fail to work properly when it cannot receive a power signal, resulting in the touch panel also failing to work properly.

[0050] To address the above problems, the present disclosure provides a driving circuit for driving a source driver circuit, including: a power switching sub-circuit electrically connected to a touch power supply terminal and a display power supply terminal respectively. The power switching sub-circuit is 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 states of the touch power supply terminal and the display power supply terminal; and a power control sub-circuit electrically connected to the power switching sub-circuit and the source driver circuit respectively. The power control sub-circuit is configured to output a source power signal to the source driver circuit under the drive of the touch power signal or the display power signal.

[0051] FIG. 1 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, the driving circuit 110 is electrically connected to the source driver circuit 120, and the driving circuit 110 supplies power to the source driver circuit 120 so that the source driver circuit 120 can work properly.

[0053] In an 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 an embodiment of the present disclosure, the power switching sub-circuit 111 is electrically connected to a touch power supply terminal Touch Power and a display power supply terminal Display Power. The touch power supply terminal Touch Power is used to provide a touch power signal Touch Power. The touch power signal Touch Power can supply power to the touch panel in the touch display screen so that the touch panel can be normally started. The display power supply terminal Display Power is used to provide a display power signal Display Power. The display power signal Display Power can supply power to the display panel in the touch display screen so that the display panel can be normally started.

[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 supply terminal Touch Power and the display power supply 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 output from the touch power terminal Touch Power and the display power terminal Display Power, and outputs it to the power control sub-circuit 112.

[0057] For example, the power switching sub-circuit 111 can default to output the display power signal Display Power to the power control sub-circuit 112, or 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 the 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 cannot receive the touch power signal Touch Power, and it can be considered that the touch power terminal Touch Power is in the 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 the power supply state at this time. 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 the power-off state at this time.

[0060] 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 power supply state or power-off state of the touch power terminal Touch Power and the display power terminal Display Power, and outputs it to the power control sub-circuit 112.

[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 can be a power management integrated circuit (PMIC).

[0062] Under the drive of the touch power signal Touch Power or the display power signal Display Power, an output source power signal is sent to the source driver circuit 120. The source power signal is a power signal for starting the source driver circuit 120, and the source driver circuit 120 is powered by the source power signal.

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

[0064] In an embodiment of the present disclosure, the source driver circuit 120 participates in the operation of the display panel. For example, the source driver circuit 120 outputs a data signal to the display panel to enable the display panel to perform data display. The source driver circuit 120 also participates in the operation of the touch panel. For example, the source driver circuit 120 receives a sensor signal from the touch panel to determine a 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, resulting in the display panel and the touch panel both being unable to operate normally.

[0065] In an embodiment of the present disclosure, when the display power supply terminal Display Power is powered, the power switching sub-circuit 111 outputs the display power signal Display Power to the power control sub-circuit 112. When the display power supply terminal Display Power loses power, the power switching sub-circuit 111 switches to output the touch power signal Touch Power to the power control sub-circuit 112. This can enable the power control sub-circuit 112 to always be in a powered state, thereby ensuring that the source driver circuit 120 can also always be in a powered state.

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

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

[0069] For example, when the touch power supply terminal Touch Power is in the power-off state and the display power supply terminal Display Power is in the power supply state, the power switching sub-circuit 111 only receives 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.

[0070] For example, the power control sub-circuit 112 is default powered by the display power signal Display Power. When the display panel does not display an image, the display power supply terminal Display Power will be in the non-power supply state. Therefore, through the driving circuit 110 provided by the embodiments of the present disclosure, by designing the power switching sub-circuit 111, the touch power supply terminal Touch Power and the display power supply terminal Display Power are simultaneously connected to the power switching sub-circuit 111. When the display power supply terminal Display Power has a non-power supply or accidental power-off situation, it can be powered by the touch power supply terminal Touch Power to ensure the normal operation of the power control sub-circuit 112 and the source driver circuit 120, and thus can also ensure the normal touch function of the touch panel.

[0071] Figure 2 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

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

[0073] In the embodiments of the present disclosure, the power switching sub-circuit 211 and the power control sub-circuit 212 are respectively similar to the power switching sub-circuit 111 and the power control sub-circuit 112 described above. For the sake of brevity, the same parts are not described again in the present disclosure.

[0074] In an 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 an embodiment of the present disclosure, the display driving unit 2111 is electrically connected to a display power supply terminal Display Power, a power control sub-circuit 212, and a control signal terminal GPIO. Under the control of a control signal GPIO from the control signal terminal GPIO, the display driving unit 2111 outputs a display power signal Display Power to the power control sub-circuit 212.

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

[0077] In an embodiment of the present disclosure, the touch driving unit 2112 is electrically connected to a touch power supply terminal Touch Power, a power control sub-circuit 212, and a control signal terminal GPIO. Under the control of a control signal GPIO from the control signal terminal GPIO, the touch driving unit 2112 outputs a touch power signal Touch Power to the power control sub-circuit 212.

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

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

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

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

[0082] Figure 3 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

[0083] As shown in Figure 3, the driving circuit 310 includes a power supply switching sub-circuit 311 and a power control sub-circuit 312. The power supply switching sub-circuit 311 includes a display driving unit 3111 and a touch driving unit 3112.

[0084] In the embodiment of the present disclosure, the power switching sub - circuit 311 and the power control sub - circuit 312 are respectively similar to the power switching sub - circuit 111 and the power control sub - circuit 112 described above. The display driving unit 3111 and the touch driving unit 3112 are respectively similar to the display driving unit 2111 and the touch driving unit 2112 described above. For the sake of brevity, the same parts are not described herein again in the present 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 supply 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 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 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 sub - circuit 312, and the source of the third transistor M3 is electrically connected to the source of the fourth transistor M4. The gate and the drain of the fourth transistor M4 are both electrically connected to the touch power supply terminal Touch Power.

[0089] In the embodiment of the present disclosure, the touch driving unit 3112 further includes a resistor R. For example, the resistance value of the resistor R can be 100 KΩ. The first end of the resistor R is electrically connected to the touch power supply terminal Touch Power, and the second end of the resistor R is electrically connected to the gate of the third transistor M3. The touch power supply 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 supply signal Touch Power provided by the touch power supply terminal Touch Power to avoid a short - circuit phenomenon when the second transistor M2 is turned on.

[0090] In an 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 sub-circuit 312, and a second end of the capacitor C is electrically connected to the voltage terminal GND. The capacitor C can play a role in stabilizing the voltage of the power signal input to the power control sub-circuit 312.

[0091] In an 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 supply terminal Display Power.

[0092] In an 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 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 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 voltages of the third transistor M3 and 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.

[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 both the display power supply terminal Display Power and the touch power supply terminal Touch Power are 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 an embodiment of the present disclosure, when the display power supply terminal Display Power is in the 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 the off state, and the second transistor M2 is in the on state. When the second transistor M2 is in the on state, due to the function 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 voltage GND with a low level, the third transistor M3 and the fourth transistor M4 are in the 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 conducting state, and the first transistor M1 in the display driving unit 3111 is in the non-conducting state. Therefore, when the display power supply terminal Display Power is in the power-off state and the touch power supply terminal Touch Power is in the power supply 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 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 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 conducting state, and the second transistor M2 is in the non-conducting state. When the touch power supply terminal Touch Power is in the power-off state, the third transistor M3 and the fourth transistor M4 are in the non-conducting 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 non-conducting state, and the first transistor M1 in the display driving unit 3111 is in the conducting state. Therefore, when the display power supply terminal Display Power is in the power supply state and the touch power supply 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] Through the embodiment of the present disclosure, when the display power supply terminal Display Power supplies power, the first transistor M1 is in the conducting state, the second transistor M2, the third transistor M3, and the fourth transistor are all in the non-conducting state, and the display power signal Display Power is output to the power control sub-circuit 312 through the first transistor M1. When the display power supply terminal Display Power is powered off, the first transistor M1 is in the non-conducting state, the second transistor M2, the third transistor M3, and the fourth transistor are all in the conducting state, and the touch power supply terminal Touch Power outputs the touch power signal Touch Power to the power control sub-circuit 312 through the third transistor M3 and the fourth transistor. Therefore, the connection structure of the transistors in the power supply switching sub-circuit 311 realizes the switching output of the power signal. In addition, the transistor has the advantages of being easy to control, having a small voltage drop, and a fast response speed. Through the above power supply switching sub-circuit 311, the voltage drop of the power signal output to the power control sub-circuit 312 can be reduced, so as to stabilize the voltage of the power signal output to the power control sub-circuit 312.

[0099] FIG. 4 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

[0100] As shown in FIG. 4, the driving circuit 410 includes a power switching sub-circuit 411 and a power control sub-circuit 412. The power switching sub-circuit 411 includes a display driving unit 4111 and a touch driving unit 4112.

[0101] In the embodiment of the present disclosure, the power switching sub-circuit 411 and the power control sub-circuit 412 are respectively similar to the power switching sub-circuit 111 and the power control sub-circuit 112 described above, and the display driving unit 4111 and the touch driving unit 4112 are respectively similar to the display driving unit 2111 and the touch driving unit 2112 described above. For the sake of simplicity, the same parts are not described herein again in the present disclosure.

[0102] In the embodiment of the present disclosure, the touch driving unit 4112 is electrically connected to a display power supply terminal Display Power, a touch power supply terminal Touch Power, the power control sub-circuit 412, and a 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 driving unit 4112 outputs the touch power signal Touch Power to the power control sub-circuit 412.

[0103] For example, the touch power supply terminal Touch Power provides the touch power signal Touch Power to the touch driving unit 4112. The control signal GPIO and the display power signal Display Power can control the touch driving unit 4112 to be in a conducting state or a disconnecting state. When the control signal GPIO and the display power signal Display Power control the touch driving unit 4112 to be in a conducting state, the touch driving 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 supply terminal Touch Power and the display power supply terminal Display Power are in a power supply state, the touch driving unit 4112 can receive the touch power signal Touch Power, and the display driving unit 4111 can receive the display power signal Display Power. At this time, the control signal GPIO can control the display driving unit 4111 to be in a conducting state, and the control signal GPIO and the display power signal Display Power can control the touch driving unit 4112 to be in a disconnecting state. In this case, the display driving unit 4111 can output the display power signal Display Power to the power control sub-circuit 412.

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

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

[0107] FIG. 5 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

[0108] As shown in FIG. 5, the driving circuit 510 includes a power switching sub-circuit 511 and a power control sub-circuit 512. The power switching sub-circuit 511 includes a display driving unit 5111 and a touch driving unit 5112.

[0109] In an embodiment of the present disclosure, the power switching sub-circuit 511 and the power control sub-circuit 512 are respectively similar to the power switching sub-circuit 111 and the power control sub-circuit 112 described above, and the display driving unit 5111 and the touch driving unit 5112 are respectively similar to the display driving unit 2111 and the touch driving unit 2112 described above. For the sake of brevity, the same parts are not described herein again in the present disclosure.

[0110] In an 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 an 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 supply terminal Display Power, and the source of the first transistor M1 is electrically connected to the power control sub-circuit 512.

[0112] In an 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 an 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 supply 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 supply 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 supply terminal Touch Power.

[0114] In an embodiment of the present disclosure, the touch driving unit 5112 further includes a resistor R. The first end of the resistor R is electrically connected to the display power supply terminal Display Power, and the second end of the resistor R is electrically connected to the gate of the third transistor M3. The display power signal Display 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 0V. The resistor R can divide the touch power signal Touch Power provided by the touch power supply terminal Touch Power to avoid a short circuit phenomenon when the second transistor M2 is turned on.

[0115] In an embodiment of the present disclosure, the driving circuit 510 further includes a capacitor C. The first end of the capacitor C is electrically connected to the power control sub-circuit 512, and the second end of the capacitor C is electrically connected to the voltage terminal GND. The capacitor C can play a role in stabilizing the voltage of the power signal input to the power control sub-circuit 512.

[0116] In an 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 supply terminal Display Power.

[0117] In an embodiment of the present disclosure, when the display power supply terminal Display Power is in a 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 a conducting state, and the second transistor M2 is in a non-conducting state. The display power 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 a non-conducting state.

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

[0119] In an 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 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 a non-conducting state, and the second transistor M2 is in a conducting state. When the second transistor M2 is in a conducting state, due to the function 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 voltage GND with a low level, the third transistor M3 is in a conducting state.

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

[0121] In an embodiment of the present disclosure, when the display power supply terminal Display Power is in a 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 a conducting state, and the second transistor M2 is in a non-conducting state. The display power 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 a non-conducting state.

[0122] In this case, both the second transistor M2 and the third transistor M3 in the touch control driving unit 5112 are in a non-conducting state, and the first transistor M1 in the display driving unit 5111 is in a conducting state. Therefore, when the display power supply terminal Display Power is in a power supply state and the touch control power supply terminal Touch Power is in a 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 supply terminal Display Power supplies power, the first transistor M1 is in a conducting state, both the second transistor M2 and the third transistor M3 are in a non-conducting state, and the display power signal Display Power is output to the power control sub-circuit 512 through the first transistor M1. When the display power supply terminal Display Power is powered off, the first transistor M1 is in a non-conducting state, both the second transistor M2 and the third transistor M3 are in a conducting state, and the touch control power supply terminal Touch Power outputs the touch control power signal Touch Power to the power control sub-circuit 512 through the third transistor M3. Therefore, the connection structure of the transistors in the power supply switching sub-circuit 511 realizes the switching output of the power supply signal. In addition, the transistor has the advantages of being easy to control, having a small voltage drop, and a fast response speed. Through the above power supply switching sub-circuit 511, the voltage drop of the power supply signal output to the power control sub-circuit 512 can be reduced, thereby stabilizing the voltage of the power supply signal output to the power control sub-circuit 512.

[0124] FIG. 6A is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

[0125] As shown in FIG. 6A, the driving circuit 610a includes a power supply switching sub-circuit 611 and a power control sub-circuit 612. The power supply switching sub-circuit 611 includes a display driving unit 6111 and a touch control driving unit 6112.

[0126] In an embodiment of the present disclosure, the power switching sub-circuit 611 and the power control sub-circuit 612 are respectively similar to the power switching sub-circuit 111 and the power control sub-circuit 112 described above. The display driving unit 6111 and the touch driving unit 6112 are respectively similar to the display driving unit 2111 and the touch driving unit 2112 described above. For the sake of simplicity, the same parts are not described again in the present disclosure.

[0127] In an 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 an 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 supply terminal Display Power, and the source of the first transistor M1 is electrically connected to the power control sub-circuit 612.

[0129] In an 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 an 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 supply 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 supply 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 supply terminal Display Power, and the drain of the fourth transistor M4 is electrically connected to the touch power supply terminal Touch Power.

[0131] In an embodiment of the present disclosure, the touch driving unit 6112 further includes a resistor R. The first end of the resistor R is electrically connected to the display power supply terminal Display Power, and the second end of the resistor R is electrically connected to the gate of the third transistor M3. The display power signal Display 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 0V. The resistor R can divide the touch power signal Touch Power provided by the touch power supply terminal Touch Power to avoid a short circuit phenomenon when the second transistor M2 is turned on.

[0132] In an 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 sub-circuit 612, and a second end of the capacitor C is electrically connected to the voltage terminal GND. The capacitor C can play a role in stabilizing the power supply signal input to the power control sub-circuit 612.

[0133] In an 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 supply terminal Display Power.

[0134] In an 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 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 conducting state, and the second transistor M2 is in the non-conducting state. The display power supply signal Display Power is also applied to the gates of the third transistor M3, the fourth transistor M4, and the drain of the second transistor M2 through the resistor R, and the gate voltages of the third transistor M3 and 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 non-conducting 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 non-conducting state, and the first transistor M1 in the display driving unit 6111 is in the conducting state. Therefore, when both the display power supply terminal Display Power and the touch power supply terminal Touch Power are in the power supply state, the display power supply signal Display Power is output to the power control sub-circuit 612 through the first transistor M1.

[0136] In an embodiment of the present disclosure, when the display power supply terminal Display Power is in the 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 the non-conducting state, and the second transistor M2 is in the conducting state. When the second transistor M2 is in the conducting state, due to the effect of the resistor R, the voltage GND is applied to the gates of the third transistor M3 and 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 voltage GND with a low level, the third transistor M3 and the fourth transistor M4 are in the conducting 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 supply terminal Display Power is in the power-off state and the touch power supply terminal Touch Power is in the power supply 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 signal Display Power is also applied to the gates of the third transistor M3 and the fourth transistor M4 through the resistor R, and the gate voltages of the third transistor M3 and 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 supply terminal Display Power is in the power supply state and the touch power supply 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 the power-off state, the touch panel may be in the off state (not working). 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 cut off by the parasitic diode of the fourth transistor M4. Therefore, the display power signal Display Power will not leak to the touch power supply terminal Touch Power through the third transistor M3 and the fourth transistor M4, thus avoiding the phenomenon that the voltage of the touch power supply terminal Touch Power increases due to leakage, which can prevent the touch panel from being accidentally started.

[0141] According to the embodiments of the present disclosure, when the display power supply terminal Display Power supplies power, the first transistor M1 is in the on state, and the second transistor M2, the third transistor M3, and the fourth transistor M4 are all in the off state. The display power signal Display Power is output to the power control sub-circuit 612 through the first transistor M1. When the display power supply terminal Display Power loses power, the first transistor M1 is in the off state, and the second transistor M2, the third transistor M3, and the fourth transistor M4 are all in the on state. The touch power supply terminal Touch Power outputs the touch power signal Touch Power to the power control sub-circuit 612 through the third transistor M3 and the fourth transistor M4. Therefore, the connection structure of the transistors in the power switching sub-circuit 511 realizes the switching output of the power signal. In addition, the transistor has the advantages of being easy to control, having a small voltage drop, and a fast response speed. Through the above power switching sub-circuit 611, the voltage drop of the power signal output to the power control sub-circuit 612 can be reduced, so as to stabilize 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 avoid the leakage phenomenon existing in the third transistor M3 and the fourth transistor M4 when the display power supply terminal Display Power supplies power and the touch power supply terminal Touch Power loses power. The drain of the first transistor M1 is electrically connected to the display power supply terminal Display Power, which can avoid the leakage problem existing in the first transistor M1 when the display power supply terminal Display Power loses power and the touch power supply terminal Touch Power supplies power.

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

[0144] As shown in FIG. 6B, 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 supply terminal Display Power, and the source S1 of the first transistor M1 is electrically connected to the power control sub-circuit 612.

[0145] The gate G2 of the second transistor M2 is electrically connected to the control signal terminal GPIO, the drain D2 of the second transistor M2 is electrically connected to the display power supply terminal Display Power, and the 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. The source S3 of the third transistor M3 is electrically connected to the source S4 of the fourth transistor M4.

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

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

[0149] FIG. 7 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, the driving circuit 710 is electrically connected to the 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 an embodiment of the present disclosure, the driving circuit 710 includes a power switching sub - circuit 711, a power control sub - circuit 712, a timing control sub - circuit 713, and a signal control sub - circuit 714. The power switching sub - circuit 711 and the power control sub - circuit 712 are similar to the power switching sub - circuit 111 and the power control sub - circuit 112 described above. For the sake of simplicity, the present disclosure will not elaborate here.

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

[0153] The power control sub - circuit 712 outputs a timing power signal to the timing control sub - circuit 713 under the drive of the touch power signal Touch Power or the display power signal Display Power. Under the drive of the timing power signal from the power control sub - circuit 712, a synchronization signal SYNC is output.

[0154] In an embodiment of the present disclosure, the signal control sub - circuit 714 is electrically connected to the timing control sub - circuit 713, the source driving circuit 720, and the touch power terminal Touch Power. For example, the signal control sub - circuit 714 can be a micro - control unit (Micro controller Unit, MCU).

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

[0156] In an embodiment of the present disclosure, in the display driving mode, the source driver circuit 720 can provide data signals for the display panel. In the touch control driving 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 sub - circuit 714 can control the source driver circuit 720 to enter the display driving mode. When the synchronization signal SYNC is at a low level, the switching signal output by the signal control sub - circuit 714 can control the source driver circuit 720 to enter the touch control driving mode.

[0157] In an embodiment of the present disclosure, the power switching sub - circuit 711 outputs the touch control 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 control power signal Touch Power to the signal control sub - circuit 714 for the operation of the signal control sub - circuit 714.

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

[0159] In an embodiment of the present disclosure, in the touch control driving mode, the source driver circuit 720 can collect sensor signals from the touch panel. The sensor signals are signals generated by the touch panel based on the received touch operations. The source driver circuit 720 generates touch signals based on the sensor signals and sends the touch signals to the signal control sub - circuit 714. The signal control sub - circuit 714 can process the touch signals and send the data processing results to the system, thus completing the touch reporting action.

[0160] FIG. 8 is a schematic structural diagram of a signal control sub - circuit according to an embodiment of the present disclosure.

[0161] As shown in FIG. 8, the signal control sub - circuit 814 can provide the control signal GPIO output by the control signal terminal GPIO.

[0162] In an embodiment of the present disclosure, the first end of the signal control sub-circuit 814 is electrically connected to the first end of the first resistor R1 and the first end of the second resistor R2. The second end of the first resistor R1 is electrically connected to the display power supply terminal Display Power. The second end of the second resistor R2 is electrically connected to the voltage terminal GND.

[0163] The second end of the signal control sub-circuit 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 supply 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 an embodiment of the present disclosure, the first resistor R1 and the second resistor R2 can be used to divide the display power supply signal Display Power provided by the display power supply terminal Display Power. The third resistor R3 and the fourth resistor R4 can be used to divide the touch power supply signal Touch Power provided by the touch power supply terminal Touch Power. This can prevent the signal control sub-circuit 814 from short-circuiting when the display power supply terminal Display Power and / or the touch power supply signal Touch Power is in the power supply state.

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

[0166] In an embodiment of the present disclosure, the signal control sub-circuit 814 can output an electrical signal with a high level or a low level according to the power supply or power-off state of the display power supply terminal Display Power. For example, when the display power supply terminal Display Power is in the power supply state, the signal control sub-circuit 814 outputs an electrical signal with a high level to indicate the output of the display power supply signal Display Power. At this time, the voltage of the electrical signal is the same as the voltage of the display power supply signal Display Power output by the display power supply terminal Display Power. When the display power supply terminal Display Power is in the power-off state, the signal control sub-circuit 814 outputs an electrical signal with a low level to indicate that the display power supply signal Display Power is not output. At this time, the voltage of the electrical signal can be 0V.

[0167] In an embodiment of the present disclosure, the signal control sub-circuit 814 receives the display power signal Display Power and outputs a control signal GPIO based on the display drive signal Display Power. For example, the power switch sub-circuit may output the touch power signal Touch Power or the display power signal Display Power to the power control sub-circuit 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 sub-circuit 814 has a high level. When the display power terminal Display Power is in a power-on state, the control signal GPIO output by the signal control sub-circuit 814 has a low level.

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

[0170] For example, when it is determined that the control signal GPIO is at a high level, the display power terminal Display Power is in a power-off state, and at this time, the display panel does not display a picture. Therefore, the timing control sub-circuit 814 can output a display signal to cause the source driver circuit to output a data signal, so as to control the display picture of the display panel to be all black, thereby reducing the operating loss of the source driver circuit. For example, the voltage of the data signal may indicate a gray value of 0.

[0171] In an embodiment of the present disclosure, under the control of the control signal GPIO, the timing control sub-circuit 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, when it is determined that the control signal GPIO is at a high level, the timing control sub-circuit 814 can turn off the clock signal in the display panel based on the clock control signal. For example, turn off the clock signal in the gate driver circuit so that the gate driver circuit does not scan the pixel units in the display panel. This can reduce the loss of the gate driver circuit.

[0172] FIG. 9 is a schematic structural diagram of a driving circuit according to another embodiment of the present disclosure.

[0173] As shown in FIG. 9, the driving circuit 910 includes a power switching sub-circuit 911, a power control sub-circuit 912, a timing control sub-circuit 913, and a signal control sub-circuit 914. The power switching sub-circuit 911, the power control sub-circuit 912, the timing control sub-circuit 913, and the signal control sub-circuit 914 are respectively similar to the power switching sub-circuit 711, the power control sub-circuit 712, the timing control sub-circuit 713, and the signal control sub-circuit 714 described above. For the sake of brevity, the similar parts are not described herein again in this disclosure.

[0174] In an embodiment of the present disclosure, the signal control sub-circuit 914 receives a sleep signal Sleep, and the sleep signal Sleep may come from a mainboard. The sleep signal Sleep may be a signal generated by the mainboard based on a received 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 sub-circuit 914, the mainboard may also control the display power supply terminal Display Power to be in a power-off state based on the sleep signal Sleep. At this time, the display panel will enter the sleep state and the screen will go off.

[0175] In one example, although the mainboard controls the display power supply terminal Display Power to be in a power-off state based on the sleep signal Sleep, the touch power supply 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 supply power to 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 may cause 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 problem that the display panel cannot turn off the screen and thus cannot be in a sleep state.

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

[0177] For example, in the embodiment shown in FIG. 8, the signal control sub - circuit 814 can output a control signal GPIO with 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 sub - circuit 814 has a high level. When the display - power terminal Display Power is in a power - supply state, the control signal GPIO output by the signal control sub - circuit 814 has a low level.

[0178] In an embodiment of the present disclosure, compared with the signal output state of the display - power terminal Display Power, the sleep signal Sleep has a higher priority. When the signal control sub - circuit 914 receives the sleep signal Sleep, the signal control sub - circuit 914 only controls the control signal GPIO to be at a low level based on the sleep signal Sleep, so as to control the power - switching sub - circuit 911 not to output the touch - power signal Touch Power and the display - power signal Display Power.

[0179] For example, referring back to FIG. 6A, 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 at a low level at this time.

[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, since the display power supply terminal Display Power is in the power-off state, the display power signal Display Power will not be 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 supply 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 will not be applied to the power control sub-circuit 612 through the third transistor M3 and the fourth transistor M4 either.

[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 supply terminal Display Power is in the power-off state and the touch power supply terminal Touch Power is in the power supply state, neither the touch power signal Touch Power nor the display power signal Display Power will be output to the power control sub-circuit 612. Therefore, the display panel can enter the sleep state.

[0183] In the embodiment of the present disclosure, the signal control sub-circuit 914 can also receive a sleep end signal. After the signal control sub-circuit 914 receives the sleep end signal, the signal control sub-circuit 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 the power-off state, the control signal GPIO output by the signal control sub-circuit 914 has a high level, and when the display power supply terminal Display Power is in the power supply state, the control signal GPIO output by the signal control sub-circuit 914 has a low level.

[0184] In the embodiment of the present disclosure, the signal control sub-circuit 914 receives a sleep signal Sleep, and also outputs a sleep mode signal Sleep Mode based on the sleep signal Sleep. The timing control sub-circuit 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 gray 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 not to display an image or to display 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, so as to control the display image of the display panel to be all black, thereby reducing the operating loss of the source driver circuit. For example, the voltage of the data signal can indicate a gray value of 0.

[0186] In an embodiment of the present disclosure, after the signal control sub-circuit 914 outputs the Sleep Mode signal to the timing control sub-circuit 913, it can then control the power supply switching sub-circuit 911 not to output a power supply signal. After the timing control sub-circuit 913 controls the display panel to display a black image based on the Sleep Mode signal, controlling the power supply switching sub-circuit 911 to then control the display panel to enter the sleep state can avoid problems such as screen flashing when the display panel switches from a normal display image to a black image.

[0187] FIG. 10 is a schematic structural diagram of a display device according to an embodiment of the present disclosure.

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

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

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

[0191] In an embodiment of the present disclosure, the source driver circuit 1020 is electrically connected to the driving circuit 1010. Under the control of the source power supply signal, the source driver circuit 1020 outputs a data signal. The display panel 1040 is electrically connected to the source driver circuit 1020, and the display panel 1040 displays an image 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 FIG. 11, the display device 1100 includes a driving circuit 1110, a source driving circuit 1120, a main board 1130, and a display panel 1140. The driving circuit 1110, the source driving circuit 1120, the main board 1130, and the display panel 1140 are respectively similar to the driving circuit 1010, the source driving circuit 1020, the main board 1030, and the display panel 1040 described above. For the sake of simplicity, the present disclosure will not elaborate herein.

[0194] In an embodiment of the present disclosure, the driving circuit 1110 includes a power switching sub-circuit 1111, a power control sub-circuit 1112, a timing control sub-circuit 1113, and a signal control sub-circuit 1114. The power switching sub-circuit 1111, the power control sub-circuit 1112, the timing control sub-circuit 1113, and the signal control sub-circuit 1114 are respectively similar to the power switching sub-circuit 711, the power control sub-circuit 712, the timing control sub-circuit 713, and the signal control sub-circuit 714 described above. For the sake of simplicity, the present disclosure will not elaborate herein.

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

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

[0197] In an embodiment of the present disclosure, the display panel 1140 generates a sensor signal Sensor in response to the received touch operation. Based on different touch operations, the sensor signal Sensor has corresponding voltage values. The source driving circuit 1120 collects the sensor signal and outputs a touch signal to the driving circuit 1110 based on the sensor signal Sensor. The driving 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 can be the position information of the touch operation.

[0198] FIG. 12 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 operation S1210 to operation S1220.

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

[0201] In operation S1220, under the drive of the touch power supply signal or the display power supply signal, a source power supply signal is output to the source driver 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 will not be described herein again.

[0203] In the 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 supply signal from the touch power supply terminal or a display power supply signal from the display power supply terminal includes: when it is determined that a touch power supply signal and a display power supply signal are received, outputting a display power supply signal; when it is determined that only a touch power supply signal is received, outputting a touch power supply signal; and when it is determined that only a display power supply signal is received, outputting a display power supply signal.

[0204] In the 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 supply signal from the touch power supply terminal or a display power supply signal from the display power supply terminal includes: based on the signal output states of the touch power supply terminal and the display power supply terminal, outputting a control signal; and under the control of the control signal, outputting a display power supply signal or a touch power supply signal.

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

[0208] In an embodiment of the present disclosure, the driving method further includes: under the control of a control signal, outputting a display signal for controlling a source driver circuit to output a data signal; wherein, when it is determined that the control signal is at a second level, the display signal controls the gray 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 a control signal, outputting a clock control signal for controlling the output state of a clock signal; wherein, when it is determined that the control signal is at a second level, the clock signal is turned off based on the clock control signal.

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

[0211] In an embodiment of the present disclosure, the driving method further includes: based on a received sleep signal, outputting a sleep mode signal; and under the control of the sleep mode signal, outputting a display signal for controlling a source driver 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.

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

[0213] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than that marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram or flowchart, and the combinations of blocks in the block diagram or flowchart, may be implemented by a dedicated hardware-based system for performing the specified functions or operations, or may be implemented by a combination of dedicated hardware and computer instructions.

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

[0215] The embodiments of the present disclosure have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments have been described separately above, this does not mean that the measures in the respective embodiments cannot be used advantageously in combination. 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 can make various substitutions and modifications, and all such substitutions and modifications should 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 sub-circuit 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 sub-circuit, 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. The driving circuit according to claim 3 , wherein: The touch driving unit is also electrically connected to the display power supply terminal, and is configured to output the touch 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 sub-circuit, 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 sub-circuit, 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: The timing control sub-circuit is electrically connected to the power control sub-circuit and the source driver circuit and is configured to outputting a synchronization signal under the drive of the timing power signal from the power control sub-circuit; as well as a signal control subcircuit, electrically connected to the timing control subcircuit, the source driver circuit, and the touch power supply terminal, configured to receive the touch power supply signal and, driven by the touch power supply signal, output a switching signal based on the synchronization signal, the switching signal being used to control the source driver circuit to switch between a display driving mode and a touch driving mode; 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 further 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 sub-circuit 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 mainboard, 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 an image 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: 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 states of the touch power terminal and the display power 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 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: 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 states of the touch power terminal and the display power terminal includes: 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 the 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 includes: When it is determined 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 driver 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, wherein 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 driver 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.

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; Driven by the timing power supply signal, output a synchronization signal; as well as Based on the synchronization signal, a switching signal is output, where 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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