Driving circuit, driving method, and display device

Abstract

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

Description

TECHNICAL FIELD

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

[0002] The embedded touch display screen is a linkage design of display technology and touch technology, which realizes the integration of the touch panel and the display panel. This design can reduce the influence of display noise on touch and improve the touch effect.

[0003] In this linkage design, the source driving circuit participates in the working process of the display panel and the touch panel, and the source driving circuit is powered by the display power supply. When the display panel does not work, the display power supply does not supply power. However, this will cause the source driving circuit to fail to work normally, thereby causing the touch panel to also fail to work normally. SUMMARY

[0004] The present disclosure provides a driving circuit, a driving method and a display device.

[0005] According to a first aspect, the present disclosure provides a driving circuit for driving a source driving circuit, comprising: a power switching sub-circuit electrically connected to a touch power supply end and a display power supply end, configured to output a touch power supply signal from the touch power supply end or a display power supply signal from the display power supply end based on the signal output state of the touch power supply end and the display power supply end; and a power control sub-circuit electrically connected to the power switching sub-circuit and the source driving circuit, configured to output a source power supply signal to the source driving circuit under the driving of the touch power supply signal or the display power supply signal.

[0006] For example, the power switching sub-circuit is configured to: output the display power supply signal in a case where it is determined that the touch power supply signal and the display power supply signal are received; output the touch power supply signal in a case where it is determined that only the touch power supply signal is received; and output the display power supply signal in a case where it is determined that only the display power supply signal is received.

[0007] For example, the power switching sub-circuit comprises a display driving unit and a touch driving unit; wherein the display driving unit is electrically connected to the display power supply end, the power control sub-circuit and a control signal end, and is configured to output the display power supply signal to the power control sub-circuit under the control of a control signal from the control signal end; and the touch driving unit is electrically connected to the touch power supply end, the power control sub-circuit and the control signal end, and is configured to output the touch power supply signal to the power control sub-circuit under the control of the control signal.

[0008] For example, the display driving unit comprises a first transistor; wherein the gate of the first transistor is electrically connected to the control signal end, the drain of the first transistor is electrically connected to the display power supply end, and the source of the first transistor is electrically connected to the power control sub-circuit.

[0009] For example, the touch driving unit includes a second transistor, a third transistor and a fourth transistor; a gate of the second transistor is electrically connected to the control signal terminal, a drain of the second transistor is electrically connected to a gate of the fourth transistor, and a source of the second transistor is electrically connected to the voltage terminal; a gate of the third transistor is electrically connected to the gate of the fourth transistor, a drain of the third transistor is electrically connected to the power control sub-circuit, and a source of the third transistor is electrically connected to a source of the fourth transistor; and the gate and the drain of the fourth transistor are both electrically connected to the touch power terminal.

[0010] For example, the touch driving unit is further electrically connected to the display power terminal and is configured to output the touch power signal to the power control sub-circuit under the control of the control signal and the display power signal.

[0011] For example, the touch driving unit includes a second transistor and a third transistor; a gate of the second transistor is electrically connected to the control signal terminal, a drain of the second transistor is electrically connected to the display power terminal, and a source of the second transistor is electrically connected to the voltage terminal; and a gate of the third transistor is electrically connected to the display power terminal, a drain of the third transistor is electrically connected to the power control sub-circuit, and a source of the third transistor is electrically connected to the touch power terminal.

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

[0013] For example, the driving circuit further includes a timing control sub-circuit electrically connected to the power control sub-circuit and the source driving circuit and configured to output a synchronization signal under the driving of a timing power signal from the power control sub-circuit; and a signal control sub-circuit electrically connected to the timing control sub-circuit, the source driving circuit and the touch power terminal and configured to receive the touch power signal, output a switching signal based on the synchronization signal under the driving of the touch power signal, and use the switching signal to control the source driving circuit to switch between the display driving mode and the touch driving mode; wherein the power control sub-circuit is further configured to output the timing power signal to the timing control sub-circuit under the driving of the touch power signal or the display power signal.

[0014] 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 driving signal; and the power switching sub-circuit is configured to output the touch power signal or the display power signal to the power control sub-circuit based on the control signal.

[0015] For example, 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.

[0016] 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; and the power switching sub-circuit is configured to be in an open state based on the control signal.

[0017] 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; and the timing control sub-circuit is configured to output a display signal to the source driving circuit based on the sleep mode signal; and the display signal is used to control the source driving circuit to output a data signal, and the display signal controls a gray value indicated by the data signal to be 0.

[0018] According to a second aspect, the present disclosure provides a display device, comprising a host board configured to output a display power signal and a touch power signal; a driving circuit according to an embodiment of the present disclosure, which is electrically connected to the host board and configured to output a source power signal based on the display power signal or the touch power signal; a source driving circuit electrically connected to the driving circuit and configured to output a data signal under control of the source power signal; and a display panel electrically connected to the source driving circuit and configured to perform picture display based on the data signal.

[0019] For example, 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; and the driving circuit is further configured to receive and process the touch signal to obtain information related to the touch operation.

[0020] According to a third aspect, the present disclosure provides a driving method applied to the driving circuit according to an embodiment of the present disclosure, comprising: outputting a touch power signal from a touch power terminal or a display power signal from a display power terminal based on signal output states of the touch power terminal and the display power terminal; and outputting a source power signal to a source driving circuit under driving of the touch power signal or the display power signal.

[0021] For example, the outputting the touch power signal from the touch power terminal or the display power signal from the display power terminal based on the signal output states of the touch power terminal and the display power terminal comprises: in a case where it is determined that the touch power signal and the display power signal are received, outputting the display power signal; in a case where 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, outputting the display power signal.

[0022] For example, the outputting the control signal based on the signal output states of the touch power terminal and the display power terminal comprises: in a case where it is determined that the touch power signal and the display power signal are received, outputting the control signal with a first level; in a case where it is determined that only the touch power signal is received, outputting the control signal with a second level; and in a case where it is determined that only the display power signal is received, outputting the control signal with the first level.

[0023] For example, the outputting the control signal based on the signal output states of the touch power terminal and the display power terminal comprises: in a case where it is determined that the touch power signal and the display power signal are received, outputting the control signal with a first level; in a case where it is determined that only the touch power signal is received, outputting the control signal with a second level; and in a case where it is determined that only the display power signal is received, outputting the control signal with the first level.

[0024] For example, the outputting the display power signal or the touch power signal under the control of the control signal comprises: in a case where it is determined that the control signal is the first level, outputting the display power signal; and in a case where it is determined that the control signal is the second level, outputting the touch power signal.

[0025] For example, the driving method further comprises: outputting, under the control of the control signal, a display signal, the display signal being used to control the source driving circuit to output a data signal; and in a case where it is determined that the control signal is the second level, the display signal controls a gray value indicated by the data signal to be 0.

[0026] For example, the driving method further comprises: outputting, under the control of the control signal, a clock control signal, the clock control signal being used to control an output state of a clock signal; and in a case where it is determined that the control signal is the second level, the clock signal is turned off based on the clock control signal.

[0027] For example, the driving method further comprises: outputting, based on a received sleep signal, the control signal with the first level, wherein the sleep signal indicates that the display power terminal does not output the display power signal.

[0028] For example, the driving method further comprises: outputting a sleep mode signal based on the received sleep signal; and outputting a display signal under control of the sleep mode signal, the display signal being used to control the source driving circuit to output the data signal; wherein the display signal controls a gray value indicated by the data signal to be 0 under control of the sleep mode signal.

[0029] For example, the driving method further comprises: outputting a timing power signal under driving of the touch power signal or the display power signal; outputting a synchronization signal under driving of the timing power signal; and outputting a switching signal based on the synchronization signal, the switching signal being used to control the source driving circuit to switch between the display driving mode and the touch driving mode. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural schematic diagram of a driving circuit according to one embodiment of the present disclosure;

[0031] Figure 2 is a structural schematic diagram of a driving circuit according to another embodiment of the present disclosure;

[0032] Figure 3 is a structural schematic diagram of a driving circuit according to another embodiment of the present disclosure;

[0033] Figure 4 is a structural schematic diagram of a driving circuit according to another embodiment of the present disclosure;

[0034] Figure 5 is a structural schematic diagram of a driving circuit according to another embodiment of the present disclosure;

[0035] Figure 6A is a structural schematic diagram of a driving circuit according to another embodiment of the present disclosure;

[0036] Figure 6B is Figure 6A is a layout schematic diagram of a driving circuit at the

[0037] Figure 7 is a structural schematic diagram of a driving circuit according to another embodiment of the present disclosure;

[0038] Figure 8 is a structural schematic diagram of a signal control sub-circuit according to one embodiment of the present disclosure;

[0039] Figure 9 is a structural schematic diagram of a driving circuit according to another embodiment of the present disclosure;

[0040] Figure 10 is a structural schematic diagram of a display device according to one embodiment of the present disclosure;

[0041] Figure 11is a structural schematic diagram of a display device according to another embodiment of the present disclosure; and

[0042] Figure 12 is a flow chart of a driving method according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0043] For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to 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 only for the purpose of description, and should not be understood as any limitation on the present disclosure, but only as examples of the embodiments of the present disclosure. When it is possible to cause confusion to the understanding of the present disclosure, the conventional structures or configurations will be omitted. It should be noted that the shapes and sizes of the components in the drawings do not reflect the true size and ratio, but only illustrate the content of the embodiments of the present disclosure.

[0044] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood as the common meanings by those skilled in the art. The terms “first”, “second” and similar words used in the embodiments of the present disclosure do not represent any order, number or importance, but are only used to distinguish different constituent parts.

[0045] In addition, in the description of the embodiments of the present disclosure, the term “connected” or “connected to” can mean that two components are directly connected, or that two components are connected via one or more other components. In addition, the two components can be connected or coupled by wired or wireless means.

[0046] 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 amplitudes of the two levels. For example, the following description takes “first level” as a relatively low level and “second level” as a relatively high level. Those skilled in the art can understand that the present disclosure is not limited thereto.

[0047] It should be noted that in the description of the embodiments of the present disclosure, the symbol GPIO can represent a control signal terminal and a control signal provided by the control signal terminal. The symbol Touch Power can represent a touch power signal terminal and a touch power signal provided by the touch power signal terminal, and can also represent the voltage of the touch power signal. The symbol Display Power can represent a display power signal terminal and a display power signal provided by the display power signal terminal, and can also represent the voltage of the display power signal. The symbol GND can represent a voltage terminal and a voltage provided by the voltage terminal. The same applies to the following embodiments, which will not be described again.

[0048] In an in-cell touch display screen, the source drive circuit is powered by a display power supply. When the display panel is not working, the display power supply does not supply power. For example, when the display panel has no picture display, the display power supply may not supply power temporarily. Therefore, this will cause the source drive circuit to be unable to work normally in the case of not receiving the power signal, thereby causing the touch panel to also be unable to work normally.

[0049] To solve the above problems, the present disclosure provides a driving circuit for driving a source drive circuit, comprising: a power switching sub-circuit, the power switching sub-circuit being electrically connected to a touch power terminal and a display power terminal respectively, and the power switching sub-circuit being configured to output a touch power signal from the touch power terminal or a display power signal from the display power terminal based on the signal output states of the touch power terminal and the display power terminal; and a power control sub-circuit, the power control sub-circuit being electrically connected to the power switching sub-circuit and the source drive circuit respectively, and the power control sub-circuit being configured to output a source power signal to the source drive circuit under the driving of the touch power signal or the display power signal.

[0050] Figure 1 FIG. 1 is a structural schematic diagram of a driving circuit according to an embodiment of the present disclosure.

[0051] As shown in FIG. 1, in the embodiment 100, the driving circuit 110 is electrically connected to the source drive circuit 120, and the driving circuit 110 supplies power to the source drive circuit 120, so that the source drive circuit 120 can work normally. Figure 1 In the embodiments of the present disclosure, the driving circuit 110 comprises a power switching sub-circuit 111 and a power control sub-circuit 112.

[0052]

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

[0054] The power switching sub-circuit 111 outputs the touch power signal Touch Power or the display power signal Display Power based on the signal output state of the touch power terminal Touch Power and the display power terminal Display Power.

[0055] For example, the power switching sub-circuit 111 selects one of the touch power signal Touch Power and the display power signal Display Power to output to the power control sub-circuit 112 according to the signals output by the touch power terminal Touch Power and the display power terminal Display Power.

[0056] For example, the power switching sub-circuit 111 can output the display power signal Display Power to the power control sub-circuit 112 by default, or can switch the output power signal from the display power signal Display Power to the touch power signal Touch Power.

[0057] For example, when the touch power terminal Touch Power provides the touch power signal Touch Power, the power switching sub-circuit 111 can receive the touch power signal Touch Power, and it can be considered that the touch power terminal Touch Power is in a power supply state at this time. When the touch power terminal Touch Power does not provide the touch power signal Touch Power, the power switching sub-circuit 111 cannot receive the touch power signal Touch Power, and it can be considered that the touch power terminal Touch Power is in a power-off state at this time.

[0058] Similarly, when the display power terminal Display Power provides the display power signal Display Power, the power switching sub-circuit 111 can receive the display power signal Display Power, and it can be considered that the display power terminal Display Power is in a power supply state 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 a power-off state at this time.

[0059] 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 the power-off state of the touch power terminal Touch Power and the display power terminal Display Power, and outputs the one power signal to the power control sub-circuit 112.

[0060] In the embodiments of the present disclosure, the power control sub-circuit 112 is electrically connected to the power switching sub-circuit 111 and the source driving circuit 120. For example, the power control sub-circuit 112 can be a power management integrated circuit (PMIC).

[0061] Under the driving of the touch power signal Touch Power or the display power signal Display Power, a source power signal is output to the source driving circuit 120. The source power signal is a power signal for starting the source driving circuit 120, and the source driving circuit 120 is powered by the source power signal.

[0062] For example, in the case where 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. In the case where the power switching sub-circuit 111 outputs the display power terminal Display Power, the power control sub-circuit 112 can convert the display power terminal Display Power into a source power signal.

[0063] In the embodiments of the present disclosure, the source driving circuit 120 participates in the work of the display panel. For example, the source driving circuit 120 outputs a data signal to the display panel, so that the display panel performs data display. The source driving circuit 120 also participates in the work of the touch panel. For example, the source driving circuit 120 receives a sensor signal from the touch panel to determine the touch operation received by the touch panel. Therefore, when the source driving circuit 120 is in the unpowered state, the source driving circuit 120 cannot work normally, thereby causing the display panel and the touch panel to both work abnormally.

[0064] In the embodiments of the present disclosure, when the display power 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 terminal Display Power is powered off, the power switching sub-circuit 111 is switched to output the touch power signal Touch Power to the power control sub-circuit 112. This can make the power control sub-circuit 112 can always be in a powered state, thereby also ensuring that the source driving circuit 120 can also always be in a powered state.

[0065] In the embodiments of the present disclosure, the power switching sub-circuit 111 outputs the display power signal Display Power in a case where it is determined that the touch power signal Touch Power and the display power signal Display Power are received. The power switching sub-circuit 111 outputs the touch power signal Touch Power in a case where it is determined that only the touch power signal Touch Power is received. The power switching sub-circuit 111 outputs the display power signal Display Power in a case where it is determined that only the display power signal Display Power is received.

[0066] For example, when the touch power terminal Touch Power and the display power terminal Display Power are both in a powered 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.

[0067] For example, when the touch power terminal Touch Power is in a powered state and the display power terminal Display Power is in a powered-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.

[0068] For example, when the touch power end Touch Power is in a power-off state and the display power end Display Power is in a 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.

[0069] For example, the power control sub-circuit 112 is powered by the display power signal Display Power by default. When the display panel does not display a picture, the display power end Display Power will be in a power-off state. Therefore, by means of the driving circuit 110 provided in the embodiments of the present disclosure, by designing the power switching sub-circuit 111, the touch power end Touch Power and the display power end Display Power are simultaneously connected to the power switching sub-circuit 111. When the display power end Display Power is in a power-off or unexpected power-off state, the touch power end Touch Power can supply power to ensure the normal operation of the power control sub-circuit 112 and the source driving circuit 120, and thus the touch function of the touch panel can be ensured to be normal.

[0070] Figure 2 FIG. 2 is a structural schematic diagram of a driving circuit according to another embodiment of the present disclosure.

[0071] As shown in FIG. 2, the driving circuit 210 includes a power switching sub-circuit 211 and a power control sub-circuit 212. Figure 2

[0072] In the embodiments of the present disclosure, the power switching sub-circuit 211 and the power control sub-circuit 212 are similar to the power switching sub-circuit 111 and the power control sub-circuit 112 respectively, and for the sake of simplicity, the same parts will not be described here.

[0073] In the embodiments of the present disclosure, the power switching sub-circuit 211 includes a display driving unit 2111 and a touch driving unit 2112.

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

[0075] ​For example, the display power terminal Display Power provides a 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 conductive state or a non-conductive state. When the control signal GPIO controls the display driving unit 2111 to be in the conductive state, the display driving unit 2111 can output the display power signal Display Power to the power control sub-circuit 212.

[0076] In the embodiments of the present disclosure, the touch driving unit 2112 is electrically connected to the touch power terminal Touch Power, the power control sub-circuit 212 and the control signal terminal GPIO. Under the control of the control signal GPIO from the control signal terminal GPIO, the touch driving unit 2112 outputs a touch power signal Touch Power to the power control sub-circuit 212.

[0077] For example, the touch power terminal Touch Power provides a 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 conductive state or a non-conductive state. When the control signal GPIO controls the touch driving unit 2112 to be in the conductive state, the touch driving unit 2112 can output the touch power signal Touch Power to the power control sub-circuit 212.

[0078] In the embodiments of the present disclosure, when the touch power terminal Touch Power and the display power terminal Display Power are both 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 conductive state and control the touch driving unit 2112 to be in the non-conductive state. In this case, the display driving unit 2111 can output the display power signal Display Power to the power control sub-circuit 212.

[0079] In the embodiment of the present disclosure, when the touch power end Touch Power is in the power supply state and the display power end 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 off state and control the touch driving unit 2112 to be in the on state. In this case, the touch driving unit 2112 can output the touch power signal Touch Power to the power control sub-circuit 212.

[0080] In the embodiment of the present disclosure, when the touch power end Touch Power is in the power supply state and the display power end 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 off state and control the touch driving unit 2112 to be in the on 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] Figure 3 is a structural schematic diagram of a driving circuit according to another embodiment of the present disclosure.

[0082] As shown in Figure 3 , the driving circuit 310 includes a power switching sub-circuit 311 and a power control sub-circuit 312. The power switching sub-circuit 311 includes a display driving unit 3111 and a touch driving unit 3112.

[0083] In the embodiment of the present disclosure, the power switching sub-circuit 311 and the power control sub-circuit 312 are similar to the power switching sub-circuit 111 and the power control sub-circuit 112 of the foregoing, and the display driving unit 3111 and the touch driving unit 3112 are similar to the display driving unit 2111 and the touch driving unit 2112 of the foregoing. For the sake of simplicity, the same parts are not described here again.

[0084] 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.

[0085] In the embodiment of the present disclosure, the gate of the first transistor M1 is electrically connected to the control signal end GPIO, the drain of the first transistor M1 is electrically connected to the display power end Display Power, and the source of the first transistor M1 is electrically connected to the power control sub-circuit 312.

[0086] 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.

[0087] In the embodiment of the present disclosure, the gate of the second transistor M2 is electrically connected to the control signal end 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 end 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 supply 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 end Touch Power.

[0088] In the embodiment of the present disclosure, the touch driving unit 3112 further includes a resistor R. For example, the resistance of the resistor R can be 100K Ω. The first end of the resistor R is electrically connected to the touch power supply end 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 end GND can be a ground end, and the voltage of the voltage end GND can be 0V. The resistor R can divide the touch power supply signal Touch Power provided by the touch power supply end Touch Power, so as to avoid the short circuit phenomenon when the second transistor M2 is turned on.

[0089] In the embodiment of the present disclosure, the driving circuit 310 further includes a capacitor C. The first end of the capacitor C is electrically connected to the power supply control sub-circuit 312, and the second end of the capacitor C is electrically connected to the voltage end GND. The capacitor C can play a role of voltage stabilization for the power supply signal input to the power supply control sub-circuit 312.

[0090] In the embodiment of the present disclosure, the voltage of the control signal GPIO provided by the control signal end GPIO is related to the power supply state of the display power supply end Display Power.

[0091] In the embodiment of the present disclosure, when the display power 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 conductive state, and the second transistor M2 is in a non-conductive state. When the touch power terminal Touch Power is in a power supply state, the touch power signal Touch Power is applied to the gate of the third transistor M3, the gate of the fourth transistor M4, and the drain of the fourth transistor M4. The gate voltage of the third transistor M3 and the gate voltage of the fourth transistor M4 gradually rise, and since the third transistor M3 and the fourth transistor M4 are PMOS transistors, the third transistor M3 and the fourth transistor M4 are in a non-conductive state.

[0092] In this case, the second transistor M2, the third transistor M3, and the fourth transistor in the touch driving unit 3112 are all in a non-conductive state, and the first transistor M1 in the display driving unit 3111 is in a conductive state. Therefore, when the display power terminal Display Power and the touch power terminal Touch Power are both in a power supply state, the display power signal Display Power is output to the power control sub-circuit 312 through the first transistor M1.

[0093] In the embodiment of the present disclosure, when the display power 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 conductive state, and the second transistor M2 is in a non-conductive state. When the touch power terminal Touch Power is in a power supply state, the touch power signal Touch Power is applied to the gate of the third transistor M3, the gate of the fourth transistor M4, and the drain of the fourth transistor M4. The gate voltage of the third transistor M3 and the gate voltage of the fourth transistor M4 gradually rise, and since the third transistor M3 and the fourth transistor M4 are PMOS transistors, the third transistor M3 and the fourth transistor M4 are in a non-conductive state.

[0094] In this case, the second transistor M2, the third transistor M3, and the fourth transistor in the touch driving unit 3112 are all in a non-conductive state, and the first transistor M1 in the display driving unit 3111 is in a conductive state. Therefore, when the display power terminal Display Power and the touch power terminal Touch Power are both in a power supply state, the display power signal Display Power is output to the power control sub-circuit 312 through the first transistor M1.

[0095] In the embodiment of the present disclosure, when the display power 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. When the touch power terminal Touch Power is in the power-off state, the third transistor M3 and the fourth transistor M4 are in the off state.

[0096] In this case, the second transistor M2, the third transistor M3, and the fourth transistor in the touch driving unit 3112 are all in the off state, and the first transistor M1 in the display driving unit 3111 is in the on state. Therefore, when the display power terminal Display Power is in the power supply state and the touch power terminal Touch Power is in the power-off state, the display power signal Display Power is output to the power control sub-circuit 312 through the first transistor M1.

[0097] Through the embodiment of the present disclosure, when the display power terminal Display Power is powered, the first transistor M1 is in the on state, and the second transistor M2, the third transistor M3, and the fourth transistor are all in the off 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 terminal Display Power is powered off, the first transistor M1 is in the off state, and the second transistor M2, the third transistor M3, and the fourth transistor are all in the on state, and the touch power 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 switching sub-circuit 311 realizes the switching output of the power signal. In addition, the transistor has the advantages of easy control, small voltage drop, and fast response speed, and through the above-mentioned power switching sub-circuit 311, the voltage drop of the power signal output to the power control sub-circuit 312 can be reduced, thereby stabilizing the voltage of the power signal output to the power control sub-circuit 312.

[0098] Figure 4 is a structural schematic diagram of a driving circuit according to another embodiment of the present disclosure.

[0099] As Figure 4 shown, 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.

[0100] In the embodiments of the present disclosure, the power switching sub-circuit 411 and the power control sub-circuit 412 are similar to the power switching sub-circuit 111 and the power control sub-circuit 112 respectively, and the display driving unit 4111 and the touch driving unit 4112 are similar to the display driving unit 2111 and the touch driving unit 2112 respectively. For the sake of simplicity, the same parts are not described here again.

[0101] In the embodiments of the present disclosure, the touch driving unit 4112 is electrically connected to the display power terminal Display Power, the touch power terminal Touch Power, the power control sub-circuit 412 and the control signal terminal GPIO. Under the control of the control signal GPIO, the touch power signal Touch Power and the display power signal Display Power, the touch driving unit 4112 outputs the touch power signal Touch Power to the power control sub-circuit 412.

[0102] For example, the touch power 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 the on state or the off state. When the control signal GPIO and the display power signal Display Power control the touch driving unit 4112 to be in the on state, the touch driving unit 4112 can output the touch power signal Touch Power to the power control sub-circuit 412.

[0103] In the embodiments of the present disclosure, when the touch power terminal Touch Power and the display power terminal Display Power are both in the 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 the on state, and the control signal GPIO and the display power signal Display Power can control the touch driving unit 4112 to be in the 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.

[0104] In this embodiment, when the Touch Power terminal is powered on and the Display Power terminal is powered off, only the Touch Driver Unit 4112 can receive the Touch Power signal, while the Display Driver Unit 4111 cannot receive the Display Power signal. At this time, the GPIO control signal can control the Display Driver Unit 4111 to be in a disconnected state, and the GPIO control signal and the Display Power signal can control the Touch Driver Unit 4112 to be in a conducting state. In this situation, the Touch Driver Unit 4112 can output the Touch Power signal to the power control sub-circuit 412.

[0105] In this embodiment, when the Touch Power terminal is in a power-off state and the Display Power terminal is in a power-on state, only the Display Driver Unit 4111 can receive the Display Power signal, while the Touch Driver Unit 4112 cannot receive the Touch Power signal. At this time, the GPIO control signal can control the Display Driver Unit 4111 to be in a conducting state, and the GPIO control signal and the Display Power signal can control the Touch Driver Unit 4112 to be in a disconnected state. In this situation, the Display Driver Unit 4111 can output the Display Power signal to the power control sub-circuit 412.

[0106] Figure 5 This is a schematic diagram of the structure of a drive circuit according to another embodiment of the present disclosure.

[0107] like Figure 5 As shown, 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.

[0108] In this embodiment, the power switching sub-circuit 511 and the power control sub-circuit 512 are 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 similar to the display driving unit 2111 and the touch driving unit 2112 described above. For the sake of simplicity, the same parts will not be described again here.

[0109] In this embodiment of the disclosure, the display driving unit 5111 includes a first transistor M1. The first transistor M1 is a PMOS transistor.

[0110] In the embodiment of the present disclosure, the gate of the first transistor M1 is electrically connected to the control signal terminal GPIO, the drain of the first transistor M1 is electrically connected to the display power terminal Display Power, and the source of the first transistor M1 is electrically connected to the power control sub-circuit 512.

[0111] In the embodiment of the present disclosure, the touch driving unit 5112 includes a second transistor M2 and a third transistor M3. The second transistor M2 is an NMOS tube, and the third transistor M3 is a PMOS tube.

[0112] In the embodiment of the present disclosure, the gate of the second transistor M2 is electrically connected to the control signal terminal GPIO, the drain of the second transistor M2 is electrically connected to the display power terminal Display Power, and the source of the second transistor M2 is electrically connected to the voltage terminal GND. The gate of the third transistor M3 is electrically connected to the display power terminal Display Power, the drain of the third transistor M3 is electrically connected to the power control sub-circuit 512, and the source of the third transistor M3 is electrically connected to the touch power terminal Touch Power.

[0113] In the 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 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 terminal Touch Power, so as to avoid the short circuit phenomenon when the second transistor M2 is turned on.

[0114] In the 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 of voltage stabilization for the power signal input to the power control sub-circuit 512.

[0115] In the embodiment of the present disclosure, the voltage of the control signal GPIO provided by the control signal terminal GPIO is related to the power supply state of the display power terminal Display Power.

[0116] In the embodiment of the present disclosure, when the display power 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 conductive state, and the second transistor M2 is in a non-conductive 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 rises. Since the third transistor M3 is a PMOS transistor, the third transistor M3 is in a non-conductive state.

[0117] In this case, the second transistor M2 and the third transistor M3 in the touch driving unit 5112 are both in a non-conductive state, and the first transistor M1 in the display driving unit 5111 is in a conductive state. Therefore, when the display power terminal Display Power and the touch power terminal Touch Power are both in a power supply state, the display power signal Display Power is output to the power control sub-circuit 512 through the first transistor M1.

[0118] In the embodiment of the present disclosure, when the display power 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 conductive state, and the second transistor M2 is in a non-conductive 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 rises. Since the third transistor M3 is a PMOS transistor, the third transistor M3 is in a non-conductive state.

[0119] In this case, the second transistor M2 and the third transistor M3 in the touch driving unit 5112 are both in a non-conductive state, and the first transistor M1 in the display driving unit 5111 is in a conductive state. Therefore, when the display power terminal Display Power and the touch power terminal Touch Power are both in a power supply state, the display power signal Display Power is output to the power control sub-circuit 512 through the first transistor M1.

[0120] In this embodiment, when the Display Power terminal is powered on, the control signal GPIO is at a low level. The first transistor M1 is a PMOS transistor, and the second transistor M2 is an NMOS transistor. Under the control of the low level of the control signal GPIO, the first transistor M1 is in the on state, and the second transistor M2 is in the off state. The Display Power signal 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, it is in the off state.

[0121] In this situation, both the second transistor M2 and the third transistor M3 in the touch driving unit 5112 are in the off state, while the first transistor M1 in the display driving unit 5111 is in the on state. Therefore, when the display power terminal DisplayPower is in the powered state and the touch power terminal Touch Power is in the powered-off state, the display power signal DisplayPower is output to the power control sub-circuit 512 through the first transistor M1.

[0122] In this embodiment, when the Display Power terminal is powered, the first transistor M1 is in the ON state, while the second transistor M2 and the third transistor M3 are both in the OFF state. The Display Power signal is output to the power control sub-circuit 512 through the first transistor M1. When the Display Power terminal is powered off, the first transistor M1 is in the OFF state, while the second transistor M2 and the third transistor M3 are both in the ON state. The Touch Power terminal outputs the Touch Power signal to the power control sub-circuit 512 through the third transistor M3. Therefore, the transistor connection structure in the power switching sub-circuit 511 enables the switching output of the power signal. Furthermore, transistors have the advantages of easy control, low voltage drop, and fast response speed. The power switching sub-circuit 511 can reduce the voltage drop of the power signal output to the power control sub-circuit 512, thereby stabilizing the voltage of the power signal output to the power control sub-circuit 512.

[0123] Figure 6A This is a schematic diagram of the structure of a drive circuit according to another embodiment of the present disclosure.

[0124] like Figure 6A As shown, the driving circuit 610a includes a power switching sub-circuit 611 and a power control sub-circuit 612. The power switching sub-circuit 611 includes a display driving unit 6111 and a touch driving unit 6112.

[0125] In the embodiments of the present disclosure, the power switching sub-circuit 611 and the power control sub-circuit 612 are similar to the power switching sub-circuit 111 and the power control sub-circuit 112 respectively, and the display driving unit 6111 and the touch driving unit 6112 are similar to the display driving unit 2111 and the touch driving unit 2112 respectively. For the sake of simplicity, the same parts are not described here again.

[0126] In the embodiments of the present disclosure, the display driving unit 6111 includes a first transistor M1. The first transistor M1 is a PMOS transistor.

[0127] In the embodiments of the present disclosure, the gate of the first transistor M1 is electrically connected to the control signal terminal GPIO, the drain of the first transistor M1 is electrically connected to the display power terminal Display Power, and the source of the first transistor M1 is electrically connected to the power control sub-circuit 612.

[0128] In the embodiments 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.

[0129] In the embodiments of the present disclosure, the gate of the second transistor M2 is electrically connected to the control signal terminal GPIO, the drain of the second transistor M2 is electrically connected to the display power terminal Display Power, and the source of the second transistor M2 is electrically connected to the voltage terminal GND. The gate of the third transistor M3 is electrically connected to the display power terminal Display Power, the drain of the third transistor M3 is electrically connected to the power control sub-circuit 612, and the source of the third transistor M3 is electrically connected to the source of the fourth transistor M4. The gate of the fourth transistor M4 is electrically connected to the display power terminal Display Power, and the drain of the fourth transistor M4 is electrically connected to the touch power terminal TouchPower.

[0130] In the embodiments 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 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 terminal TouchPower, so as to avoid the short circuit phenomenon when the second transistor M2 is turned on.

[0131] In the embodiment of the present disclosure, the driving circuit 610 further includes a capacitor C. A first end of the capacitor C is electrically connected to the power supply control sub-circuit 612, and a second end of the capacitor C is electrically connected to the voltage terminal GND. The capacitor C can stabilize the power supply signal input to the power supply control sub-circuit 612.

[0132] In the embodiment of the present disclosure, the voltage of the control signal GPIO provided by the control signal terminal GPIO is related to the power supply state of the display power supply terminal Display Power.

[0133] In the embodiment of the present disclosure, when the display power supply terminal Display Power is in the power supply state, the level of the control signal GPIO is low. The first transistor M1 is a PMOS tube, and the second transistor M2 is an NMOS tube. Under the control of the low level of the control signal GPIO, the first transistor M1 is in the on state, and the second transistor M2 is in the off state. The display power supply signal Display Power is also applied to the gate of the third transistor M3, the gate of the fourth transistor M4 and the drain of the second transistor M2 through the resistor R, and the gate voltage of the third transistor M3 and the gate voltage of the fourth transistor M4 gradually increase. Since the third transistor M3 is a PMOS tube, the third transistor M3 and the fourth transistor M4 are in the off state.

[0134] 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 and the touch power supply terminal Touch Power are both in the power supply state, the display power supply signal Display Power is output to the power supply control sub-circuit 612 through the first transistor M1.

[0135] In the 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 high. The first transistor M1 is a PMOS tube, and the second transistor M2 is an NMOS tube. 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, 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 due to the action of the resistor R. Since the third transistor M3 and the fourth transistor M4 are PMOS tubes, under the control of the voltage GND with low level, the third transistor M3 and the fourth transistor M4 are in the on state.

[0136] In this case, the second transistor M2, the third transistor M3 and the fourth transistor M4 in the touch driving unit 6112 are all in the on state, and the first transistor M1 in the display driving unit 6111 is in the off state. Therefore, when the display power terminal Display Power is in the power-off state and the touch power terminal Touch Power is in the power-on state, the touch power signal Touch Power is output to the power control sub-circuit 612 through the third transistor M3 and the fourth transistor M4.

[0137] In the embodiment of the present disclosure, when the display power terminal Display Power is in the power-on state, the level of the control signal GPIO is low. The first transistor M1 is a PMOS tube, and the second transistor M2 is an NMOS tube. Under the control of the low level of the control signal GPIO, the first transistor M1 is in the on state, and the second transistor M2 is in the off state. The display power signal Display Power is also applied to the gate of the third transistor M3 and the gate of the fourth transistor M4 through the resistor R, and the gate voltage of the third transistor M3 and the gate voltage of the fourth transistor M4 gradually rise. Since the third transistor M3 and the fourth transistor M4 are PMOS tubes, the third transistor M3 and the fourth transistor M4 are in the off state.

[0138] In this case, the second transistor M2, the third transistor M3 and the fourth transistor M4 in the touch driving unit 6112 are all in the off state, and the first transistor M1 in the display driving unit 6111 is in the on state. Therefore, when the display power terminal Display Power is in the power-on state and the touch power terminal Touch Power is in the power-off state, the display power signal Display Power is output to the power control sub-circuit 612 through the first transistor M1.

[0139] When the touch power terminal Touch Power is in the power-off state, the touch panel can 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, so the display power signal Display Power will not leak to the touch power terminal Touch Power through the third transistor M3 and the fourth transistor M4, thereby avoiding the phenomenon that the voltage of the touch power terminal Touch Power rises due to the leakage, which can prevent the touch panel from being mistakenly started.

[0140] When the display power terminal Display Power is powered, the first transistor M1 is in a conductive state, the second transistor M2, the third transistor M3, and the fourth transistor M4 are all in a disconnected state, and the display power signal Display Power is output to the power control sub-circuit 612 through the first transistor M1. When the display power terminal Display Power is powered off, the first transistor M1 is in a disconnected state, the second transistor M2, the third transistor M3, and the fourth transistor M4 are all in a conductive state, and the touch power 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 convenient control, small voltage drop, and fast response speed, and the power switching sub-circuit 611 can reduce the voltage drop of the power signal output to the power control sub-circuit 612, thereby stabilizing the voltage of the power signal output to the power control sub-circuit 612.

[0141] In addition, the source of the third transistor M3 and the source of the fourth transistor M4 are electrically connected, 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 terminal Display Power is powered and the touch power terminal Touch Power is powered off. The drain of the first transistor M1 is electrically connected to the display power terminal Display Power, which can avoid the leakage problem existing in the first transistor M1 when the display power terminal Display Power is powered off and the touch power terminal Touch Power is powered.

[0142] Figure 6B is Figure 6A is the layout diagram of the driving circuit.

[0143] As Figure 6B indicated, the gate G1 of the first transistor M1 is electrically connected to the control signal terminal GPIO, the drain D1 of the first transistor M1 is electrically connected to the display power terminal Display Power, and the source S1 of the first transistor M1 is electrically connected to the power control sub-circuit 612.

[0144] 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 terminal Display Power, and the source S2 of the second transistor M2 is electrically connected to the voltage terminal GND.

[0145] The gate G3 of the third transistor M3 is electrically connected to the display power terminal, the drain D3 of the third transistor M3 is electrically connected to the power control sub-circuit 612, and the source S3 of the third transistor M3 is electrically connected to the source S4 of the fourth transistor M4.

[0146] The gate G4 of the fourth transistor M4 is electrically connected to the Display Power terminal, and the drain D4 of the fourth transistor M4 is electrically connected to the Touch Power terminal.

[0147] The first end of resistor R is electrically connected to the display power terminal, and the second end of resistor R is electrically connected to the gate G3 of the third transistor M3.

[0148] Figure 7 This is a schematic diagram of the structure of a drive circuit according to another embodiment of the present disclosure.

[0149] like Figure 7 As shown, 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 work normally.

[0150] In this embodiment, 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, and will not be described again here for the sake of brevity.

[0151] In this embodiment of the disclosure, the timing control sub-circuit 713 is electrically connected to the power control sub-circuit 712 and the source drive circuit 720. For example, the timing control sub-circuit 713 can be a timing controller (TCON).

[0152] Driven by the Touch Power signal or the Display Power signal, the power control sub-circuit 712 outputs a timing power signal to the timing control sub-circuit 713. Driven by the timing power signal from the power control sub-circuit 712, it outputs a synchronization signal SYNC.

[0153] In this embodiment of the disclosure, the signal control sub-circuit 714 is electrically connected to the timing control sub-circuit 713, the source drive circuit 720, and the touch power terminal. For example, the signal control sub-circuit 714 can be a microcontroller unit (MCU).

[0154] The signal control sub-circuit 714 receives the touch power signal and, driven by the touch power signal, outputs a switching signal based on the synchronization signal SYNC. The switching signal is used to control the source drive circuit 720 to switch between display drive mode and touch drive mode.

[0155] In this embodiment, in display driving mode, the source driving circuit 720 can provide data signals to the display panel. In touch driving mode, the source driving circuit 720 can acquire touch operations from the touch panel. For example, the synchronization signal SYNC can be a pulse signal. When the synchronization signal SYNC is high, the switching signal output by the signal control sub-circuit 714 can control the source driving circuit 720 to enter display driving mode. When the synchronization signal SYNC is low, the switching signal output by the signal control sub-circuit 714 can control the source driving circuit 720 to enter touch driving mode.

[0156] In this embodiment, the power switching subcircuit 711 outputs the Touch Power signal or the Display Power signal to the power control subcircuit 712. The power control subcircuit 712 can convert the received power signal into a timing power signal required for the operation of the timing control subcircuit 713 and a source power signal required for the operation of the source drive circuit 720. The Touch Power terminal can directly output the Touch Power signal to the signal control subcircuit 714 for operation.

[0157] In this embodiment of the disclosure, the timing control sub-circuit 713 can also output a display signal to the source drive circuit 720. The source drive circuit 720 can generate a data signal based on the display signal, and the display panel can display an image based on the data signal.

[0158] In this embodiment, the source driving circuit 720, in touch driving mode, can acquire sensor signals from the touch panel. These sensor signals are generated by the touch panel based on received touch operations. Based on the sensor signals, the source driving circuit 720 generates touch signals and sends them to the signal control sub-circuit 714. The signal control sub-circuit 714 processes the touch signals and sends the processing results to the system, thereby completing the touch reporting action.

[0159] Figure 8 This is a schematic diagram of the structure of a signal control sub-circuit according to an embodiment of the present disclosure.

[0160] like Figure 8 As shown, the signal control sub-circuit 814 can provide the control signal GPIO output from the control signal terminal GPIO.

[0161] In the embodiment of the present disclosure, a first end of the signal control sub-circuit 814 is electrically connected with a first end of the first resistor R1 and a first end of the second resistor R2, a second end of the first resistor R1 is electrically connected with the display power terminal Display Power. A second end of the second resistor R2 is electrically connected with the voltage terminal GND.

[0162] A second end of the signal control sub-circuit 814 is electrically connected with a first end of the third resistor R3 and the control signal terminal GPIO, a second end of the third resistor R3 is electrically connected with the touch power terminal Touch Power. The second end of the third resistor R3 is also electrically connected with a first end of the fourth resistor R4, and a second end of the fourth resistor R4 is electrically connected with the voltage terminal GND.

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

[0164] For example, the resistance of the first resistor R1 and the third resistor R3 can be 4.7KΩ. The resistance of the second resistor R2 and the fourth resistor R4 can be 200KΩ. The present disclosure does not limit the resistance of the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4.

[0165] In the 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 terminal Display Power. For example, when the display power terminal Display Power is in a power supply state, the signal control sub-circuit 814 outputs an electrical signal with a high level to indicate that the display power signal Display Power is output. At this time, the voltage of the electrical signal is consistent with the voltage of the display power signal Display Power output by the display power terminal Display Power. When the display power terminal Display Power is in a power-off state, the signal control sub-circuit 814 outputs an electrical signal with a low level to indicate that the display power signal Display Power is not output. At this time, the voltage of the electrical signal can be 0V.

[0166] In the embodiments 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 driving signal Display Power. For example, the power switching sub-circuit can 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.

[0167] 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.

[0168] In the embodiments of the present disclosure, the timing control sub-circuit 814 also receives the control signal GPIO, and outputs a display signal to the source driving circuit based on the control signal GPIO. The source driving circuit can output a data signal based on the display signal.

[0169] For example, when it is determined that the control signal GPIO is high, 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 control the display panel to display a picture full of black by outputting the display signal and making the source driving circuit output the data signal, so as to reduce the running loss of the source driving circuit. For example, the voltage of the data signal can indicate that the gray value is 0.

[0170] In the embodiments 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 high, the timing control sub-circuit 814 can turn off the clock signal in the display panel based on the clock control signal. For example, the clock signal in the gate driving circuit is turned off, so that the gate driving circuit does not scan the pixel units in the display panel. This can reduce the loss of the gate driving circuit.

[0171] Figure 9 FIG. 8 is a structural schematic diagram of a driving circuit according to another embodiment of the present disclosure.

[0172] As Figure 9As shown, 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 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 respectively. For simplicity, the similar parts are not described herein.

[0173] In the embodiment of the present disclosure, the signal control sub-circuit 914 receives a sleep signal Sleep. The sleep signal Sleep can come from a mainboard. The sleep signal Sleep can be a signal generated by the mainboard based on receiving a sleep instruction. The sleep instruction can instruct the source driving circuit to drive the display to enter a sleep state. For example, when the mainboard sends the sleep signal Sleep to the signal control sub-circuit 914, the mainboard can also control the display power terminal Display Power to be in a power-off state based on the sleep signal Sleep. At this time, the display panel will enter a sleep state and be screen-off.

[0174] In an example, although the mainboard controls the display power terminal Display Power to be in a power-off state based on the sleep signal Sleep, the touch power terminal Touch Power can 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 timing control sub-circuit 913 to work. This makes the timing control sub-circuit 913 possible to output a display signal to the source driving circuit, so that the source driving circuit outputs a data signal to the display panel, causing the display panel to have a problem of being unable to be screen-off, thereby being unable to be in a sleep state.

[0175] To overcome the above problems, in the embodiments 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 normally, so that the timing control sub-circuit 913 also cannot drive the source driving circuit. Therefore, under the control of the sleep signal Sleep, the display panel can enter a sleep state.

[0176] For example, as shown in the embodiment of FIG. 8, the signal control sub-circuit 814 can output the control signal GPIO with a corresponding level based on the signal output state of the display power terminal DisplayPower. For example, when the display power terminal DisplayPower 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 DisplayPower is in a power supply state, the control signal GPIO output by the signal control sub-circuit 814 has a low level. Figure 8 In the embodiments of the present disclosure, the sleep signal Sleep has a higher priority than the signal output state of the display power terminal DisplayPower. 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 DisplayPower.

[0177] For example, it can be referred back to

[0178] , although the display power terminal DisplayPower is in a power-off state, when the signal control sub-circuit receives the sleep signal Sleep, the level of the control signal GPIO is low at this time. Figure 6A

[0179] ​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 conductive state, and the second transistor M2 is in a non-conductive state. Although the first transistor M1 is in a conductive state, since the display power terminal Display Power is in a power-off state, the display power signal Display Power cannot be applied to the power control sub-circuit 612 through the first transistor M1.

[0180] When the second transistor M2 is in a non-conductive state, since the display power terminal Display Power is in a power-off state, the voltages of the gate of the third transistor M3 and the gate of the fourth transistor M4 are in a float state, the third transistor M3 and the fourth transistor M4 are in a non-conductive state, and thus the touch power signal Touch Power cannot be applied to the power control sub-circuit 612 through the third transistor M3 and the fourth transistor M4.

[0181] In this case, the second transistor M2, the third transistor M3, and the fourth transistor M4 are all in a non-conductive state, and the first transistor M1 is in a conductive state. Therefore, when the display power terminal Display Power is in a power-off state and the touch power terminal Touch Power is in a power supply state, neither the touch power signal Touch Power nor the display power signal Display Power can be output to the power control sub-circuit 612. Therefore, the display panel can enter a sleep state.

[0182] 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 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 914 has a high level, and when the display power terminal Display Power is in a power supply state, the control signal GPIO output by the signal control sub-circuit 914 has a low level.

[0183] In the embodiment of the present disclosure, the signal control sub-circuit 914 receives the 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 driving circuit based on the sleep mode signal Sleep Mode. The display signal is used to control the source driving circuit to output a data signal, and the display signal controls the gray value indicated by the data signal to be 0.

[0184] For example, under the control of the sleep mode signal Sleep Mode, the timing control sub-circuit 913 can control the display panel to display no picture or a black picture. Therefore, the timing control sub-circuit 914 can control the display panel to display a picture full of black by outputting the display signal and enabling the source driving circuit to output the data signal, so as to reduce the operation loss of the source driving circuit. For example, the voltage of the data signal can indicate a gray value of 0.

[0185] In the embodiments of the present disclosure, after the signal control sub-circuit 914 outputs the sleep mode signal Sleep Mode to the timing control sub-circuit 913, the signal control sub-circuit 914 can control the power switching sub-circuit 911 to stop outputting the power signal. When the timing control sub-circuit 913 controls the display panel to display a black picture based on the sleep mode signal Sleep Mode, the signal control sub-circuit 914 controls the power switching sub-circuit 911 to control the display panel to enter the sleep state, which can avoid the problem of flickering when the display panel switches from a normal picture to a black picture.

[0186] Figure 10 FIG. 1 is a structural schematic diagram of a display device according to an embodiment of the present disclosure.

[0187] As shown in FIG. 1, the display device 1000 includes a driving circuit 1010, a source driving circuit 1020, a host board 1030, and a display panel 1040. Figure 10

[0188] In the embodiments of the present disclosure, the host board 1030 outputs a display power signal and a touch power signal. For example, the host board 1030 can be a display power end Display Power that provides the display power signal Display Power and a touch power end Touch Power that provides the touch power signal Touch Power.

[0189] In the embodiments of the present disclosure, the driving circuit 1010 is electrically connected to the host board 1030. The driving circuit 1010 can output a source power signal 1020 based on the display power signal or the touch power signal. For example, the driving circuit 1010 can be any one of the driving circuit 110, the driving circuit 210, the driving circuit 310, the driving circuit 410, the driving circuit 510, the driving circuit 610a, and the driving circuit 710 described above, and details are not described herein again.

[0190] In the embodiments of the present disclosure, the source driving circuit 1020 is electrically connected to the driving circuit 1010. Under the control of the source power signal, the source driving circuit 1020 outputs a data signal. The display panel 1040 is electrically connected to the source driving circuit 1020, and the display panel 1040 displays a picture based on the data signal.

[0191] Figure 11 ​is a structural schematic diagram of a display device according to another embodiment of the present disclosure.

[0192] As shown in Figure 11 The display device 1100 includes a driving circuit 1110, a source driving circuit 1120, a host board 1130 and a display panel 1140. The driving circuit 1110, the source driving circuit 1120, the host board 1130 and the display panel 1140 are similar to the driving circuit 1010, the source driving circuit 1020, the host board 1030 and the display panel 1040 respectively, and the present disclosure will not be repeated here for simplicity.

[0193] In the 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 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 respectively, and the present disclosure will not be repeated here for simplicity.

[0194] In the embodiment of the present disclosure, the power switching sub-circuit 1111 outputs the touch power signal Touch Power or the 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 timing control sub-circuit 1113 to work and a source power signal required for the source driving circuit 1120 to work. The touch power terminal Touch Power can directly output the touch power signal Touch Power to the signal control sub-circuit 1114 for the signal control sub-circuit 1114 to work.

[0195] In the embodiment of the present disclosure, the timing control sub-circuit 1113 outputs the display signal to the source driving circuit 1120. The source driving circuit 1120 can generate the data signal Data based on the display signal, and the display panel 1140 can perform picture display based on the data signal Data.

[0196] In the embodiment of the present disclosure, the display panel 1140 generates the sensor signal Sensor in response to the received touch operation. Based on different touch operations, the sensor signal Sensor has a corresponding voltage value. The source driving circuit 1120 collects the sensor signal and outputs the 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.

[0197] Figure 12 FIG. 13 is a flowchart of a driving method according to an embodiment of the present disclosure.

[0198] As shown in FIG. 13, the driving method can include operations S1210 to S1220. Figure 12

[0199] In operation S1210, a touch power signal from the touch power terminal or a display power signal from the display power terminal is output based on a signal output state of the touch power terminal and the display power terminal.

[0200] In operation S1220, a source power signal is output to the source driving circuit under driving of the touch power signal or the display power signal.

[0201] In the embodiments of the present disclosure, operations S1210 to S1220 are similar to the operations performed by the driving circuit 110 described above, and thus are not described again here.

[0202] In the embodiments of the present disclosure, outputting the touch power signal from the touch power terminal or the display power signal from the display power terminal based on the signal output state of the touch power terminal and the display power terminal includes: in a case where it is determined that the touch power signal and the display power signal are received, outputting the display power signal; in a case where 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, outputting the display power signal.

[0203] In the embodiments of the present disclosure, outputting the touch power signal from the touch power terminal or the display power signal from the display power terminal based on the signal output state of the touch power terminal and the display power terminal includes: outputting a control signal based on the signal output state of the touch power terminal and the display power terminal; and outputting the display power signal or the touch power signal under control of the control signal.

[0204] In the embodiments of the present disclosure, outputting the control signal based on the signal output state of the touch power terminal and the display power terminal includes: in a case where it is determined that the touch power signal and the display power signal are received, outputting the control signal with a first level; in a case where it is determined that only the touch power signal is received, outputting the control signal with a second level; and in a case where it is determined that only the display power signal is received, outputting the control signal with the first level.

[0205] For example, the first level is a low level, and the second level is a high level.

[0206] ​In the embodiment of the present disclosure, under the control of the control signal, outputting the display power signal or the touch power signal comprises: outputting the display power signal when it is determined that the control signal is at the first level; and outputting the touch power signal when it is determined that the control signal is at the second level.

[0207] In the embodiment of the present disclosure, the driving method further comprises: under the control of the control signal, outputting a display signal, the display signal being used to control the source driving circuit to output a data signal; and wherein when it is determined that the control signal is at the second level, the display signal controls a gray value indicated by the data signal to be 0.

[0208] In the embodiment of the present disclosure, the driving method further comprises: under the control of the control signal, outputting a clock control signal, the clock control signal being used to control an output state of the clock signal; and 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.

[0209] In the embodiment of the present disclosure, the driving method further comprises: based on a received sleep signal, outputting the control signal with the first level, wherein the sleep signal indicates that the display power terminal does not output the display power signal.

[0210] In the embodiment of the present disclosure, the driving method further comprises: based on a received sleep signal, outputting a sleep mode signal; and under the control of the sleep mode signal, outputting a display signal, the display signal being used to control the source driving circuit to output a data signal; and wherein under the control of the sleep mode signal, the display signal controls a gray value indicated by the data signal to be 0.

[0211] In the embodiment of the present disclosure, the driving method further comprises: under the driving of the touch power signal or the display power signal, outputting a timing power signal; under the driving of the timing power signal, outputting a synchronization signal; and based on the synchronization signal, outputting a switching signal, the switching signal being used to control the source driving circuit to switch between a display driving mode and a touch driving mode.

[0212] The computer program product of the first aspect can include one or more non-transitory computer-readable media storing instructions that, when executed, cause a processor of a computer-based system to perform any of the methods of the first aspect. The computer program product of the first aspect can include one or more non-transitory computer-readable media storing instructions that, when executed, cause a processor of a computer-based system to perform any of the methods of the first aspect.

[0213] Those skilled in the art will understand that the features recited in the various embodiments and / or claims of the present disclosure can be combined and / or incorporated in a variety of combinations and / or permutations, even if such combinations or permutations are not expressly recited in the present disclosure. In particular, the features recited in the various embodiments and / or claims of the present disclosure can be combined and / or incorporated in a variety of combinations and / or permutations without departing from the spirit and teachings of the present disclosure. All such combinations and / or permutations are within the scope of the present disclosure.

[0214] The above describes embodiments of the present disclosure. However, these embodiments are merely for illustrative purposes, and are not intended to limit the scope of the present disclosure. Although the above describes each embodiment separately, this does not mean that the measures in each embodiment cannot be used advantageously in combination. The scope of the present disclosure is defined by the appended claims and their equivalents. Those skilled in the art can make various substitutions and modifications without departing from the scope of the present disclosure, and all such substitutions and modifications shall fall within the scope of the present disclosure.

Claims

1. A driving circuit for driving a source driving circuit, comprising: The power switching sub-circuit includes: a display driver unit and a touch driver unit; The display driving unit is electrically connected to the display power supply terminal, the power control sub-circuit, and the control signal terminal, and is configured to output the display power signal from the display power supply terminal to the power control sub-circuit under the control of the control signal from the control signal terminal. The touch driving unit is electrically connected to the touch power supply terminal, the power control sub-circuit, the control signal terminal, and the display power supply terminal, and is configured to output a touch power signal from the touch power supply terminal to the power control sub-circuit under the control of the control signal and the display power signal; and The power control sub-circuit, electrically connected to the power switching sub-circuit and the source drive circuit, is configured to output a source power signal to the source drive 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 sub-circuit is configured as follows: Upon confirming that the touch power signal and the display power signal have been received, the display power signal is output. If it is determined that only the touch power signal is received, the touch power signal is output; as well as If 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 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 supply terminal, and the source of the first transistor is electrically connected to the power control sub-circuit.

4. The driving circuit according to claim 1, 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 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 control sub-circuit, and the source of the third transistor is electrically connected to the touch power supply terminal.

5. The driving circuit according to claim 1, 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 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 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.

6. The driving circuit according to claim 1, further comprising: A timing control subcircuit, electrically connected to the power control subcircuit and the source drive circuit, is configured to output a synchronization signal under the drive of a timing power signal from the power control subcircuit. as well as The signal control sub-circuit, electrically connected to the timing control sub-circuit, the source drive circuit, and the touch power supply terminal, is 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 is used to control the source drive circuit to switch between display drive mode and touch drive 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.

7. The driving circuit according to claim 6, wherein, The signal control sub-circuit is further configured to receive the display power signal and output a control signal based on the display power signal; wherein the power switching sub-circuit outputs the touch power signal or the display power signal to the power control sub-circuit based on the control signal.

8. The driving circuit according to claim 7, wherein, The timing control sub-circuit is further configured to receive the control signal and output a display signal to the source drive circuit based on the control signal.

9. The driving circuit according to claim 6, wherein, 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 switching sub-circuit is in an open circuit state based on the control signal.

10. The driving circuit according to claim 6, wherein, 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 drive circuit based on the sleep mode signal; the display signal is used to control the source drive circuit to output a data signal, and the display signal controls the grayscale value indicated by the data signal to be 0.

11. A display device, comprising: The motherboard is configured to output the display power signal and the touch power signal; The driving circuit as described in any one of claims 1 to 10 is electrically connected to the motherboard and is configured to output the source power signal based on the display power signal or the touch power signal; The source drive circuit is electrically connected to the drive circuit and is configured to output a data signal under the control of the source power supply signal. as well as The display panel, electrically connected to the source drive circuit, is configured to display images based on the data signal.

12. The display device according to claim 11, wherein, The display panel is also configured to generate sensor signals in response to a received touch operation; The source drive circuit is also configured to acquire the sensor signal and output a touch signal based on the sensor signal; as well as The driving circuit is also configured to receive and process the touch signal to obtain information related to the touch operation.

13. A driving method, applied to a driving circuit as described in any one of claims 1-10, comprising: Based on the signal output states of the touch power terminal and the display power terminal, output a touch power signal from the touch power terminal or a display power signal from 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 drive circuit.

14. The driving method according to claim 13, wherein, The step of 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: Upon confirming that the touch power signal and the display power signal have been received, the display power signal is output. If it is determined that only the touch power signal is received, the touch power signal is output; and If it is determined that only the display power signal is received, the display power signal is output.

15. The driving method according to claim 13, wherein, The step of 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: Based on the signal output states of the touch power supply terminal and the display power supply terminal, a control signal is output; and Under the control of the control signal, the display power signal or the touch power signal is output.

16. The driving method according to claim 15, wherein, Based on the signal output states of the touch power supply terminal and the display power supply terminal, the output control signal includes: Upon confirming that the touch power signal and the display power signal have been received, the control signal having a first level is output; If it is determined that only the touch power signal is received, the control signal with the second level is output; and If it is determined that only the display power signal is received, the control signal with a first level is output.

17. The driving method according to claim 16, wherein, The step of outputting the display power signal or the touch power signal under the control of the control signal includes: When the control signal is determined to be at the first level, the display power signal is output; and When the control signal is determined to be at the second level, the touch power signal is output.

18. The driving method according to claim 15, further comprising: Under the control of the control signal, a display signal is output, which is used to control the source drive circuit to output a data signal; wherein, when the control signal is determined to be at the second level, the display signal controls the grayscale value indicated by the data signal to be 0.

19. The driving method according to claim 15, further comprising: Under the control of the control signal, a clock control signal is output, which is used to control the output state of the clock signal; wherein, when the control signal is determined to be at the second level, the clock signal is turned off based on the clock control signal.

20. The driving method according to claim 13, further comprising: Based on the received sleep signal, a control signal with a first level is output, wherein the sleep signal indicates that the display power supply terminal does not output the display power signal.

21. The driving method according to claim 13, further comprising: Based on the received sleep signal, output a sleep mode signal; as well as Under the control of the sleep mode signal, a display signal is output, which is used to control the source drive 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.

22. The driving method according to claim 13, further comprising: Driven by the touch power signal or the display power signal, a timing power signal is output; Driven by the timing power signal, a synchronization signal is output; as well as Based on the synchronization signal, a switching signal is output, which is used to control the source driving circuit to switch between display driving mode and touch driving mode.

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