Drive Circuit and Display Device

Abstract

The driving circuit and display device provided by the embodiment of the present application. The driving circuit includes: a switching module, a first control module, and a second control module. The switching module is electrically connected to a power supply terminal, a ground terminal, and a first node. The switching module is used to control the conduction or disconnection between the power supply terminal and the first node. The first control module is electrically connected to the first node. The first control module is used to output a control signal based on the potential state of the first node. The control signal includes a first potential and a second potential. When the power supply terminal is conducted to the first node, the control signal is the first potential. The second control module is electrically connected to the first node, the power supply terminal, and the ground terminal. The second control module is used to control the conduction or disconnection between the power supply terminal and the ground terminal under the control of the switching module and the first control module. This driving circuit can achieve free switching between a high power supply voltage and a low power supply voltage.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a driving circuit and a display device. Background Art

[0002] Flat panel display devices are widely used because of their advantages such as high picture quality, power saving, thin body, and wide application range. The power management chip plays a very important role in flat panel display devices. The power management chip is responsible for the conversion, distribution, detection, and other power management of electrical energy in the driving circuit. Specifically, it is used to provide driving voltages such as a high power supply voltage, a low power supply voltage, and a common voltage to drive the display.

[0003] Currently, most power management chips support two sets of voltage settings, one is the high power supply voltage and the other is the low power supply voltage. However, most of them use the potential selection default values of the timing controller or the power management chip itself for control. In actual use, it is not convenient to use these two sets of voltages. One can only default to select the output of the high power supply voltage or the output of the low power supply voltage, and it is impossible to achieve free switching between the high power supply voltage and the low power supply voltage. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a driving circuit and a display device, and the driving circuit can achieve free switching between the high power supply voltage and the low power supply voltage.

[0005] On the one hand, the embodiments of this application provide a driving circuit, including: a switching module, a first control module, and a second control module. The switching module is electrically connected to a power supply terminal, a ground terminal, and a first node. The switching module is used to control the conduction or disconnection between the power supply terminal and the first node. The first control module is electrically connected to the first node. The first control module is used to output a control signal based on the potential state of the first node. The control signal includes a first potential and a second potential. When the power supply terminal is conductive to the first node, the control signal is the first potential. When the power supply terminal is disconnected from the first node, the control signal is the second potential. The second control module is electrically connected to the first node, the power supply terminal, and the ground terminal. The second control module is used to control the conduction or disconnection between the power supply terminal and the ground terminal under the control of the switching module and the first control module.

[0006] Optionally, in some embodiments of this application, the switching module includes a switching switch. The switching switch includes a first pin and a second pin. The first pin is electrically connected to the power supply terminal, the second pin is electrically connected to the first node, and the ground terminal is electrically connected to the first node.

[0007] Optionally, in some embodiments of the present application, the switching module further includes a first resistor, one end of the first resistor is electrically connected to the first node, and the other end of the first resistor is electrically connected to the ground terminal.

[0008] Optionally, in some embodiments of the present application, the switching module further includes a capacitor, a first end of the capacitor is electrically connected to the power supply terminal, a second end of the capacitor is electrically connected to the first pin, or a first end of the capacitor is electrically connected to the first node, and a second end of the capacitor is electrically connected to the ground terminal.

[0009] Optionally, in some embodiments of the present application, the switching module includes a switching switch, the switching switch includes a first pin, a second pin, and a third pin, the first pin is electrically connected to the power supply terminal, the second pin is electrically connected to the first node, and the third pin is electrically connected to the ground terminal.

[0010] Optionally, in some embodiments of the present application, the first control module includes a driving chip, and the driving chip is electrically connected to the first node.

[0011] Optionally, in some embodiments of the present application, the second control module includes a switching transistor, a gate of the switching transistor is electrically connected to the first node, a first electrode of the switching transistor is electrically connected to the power supply terminal, and a second electrode of the switching transistor is electrically connected to the ground terminal.

[0012] Optionally, in some embodiments of the present application, the second control module further includes a light-emitting device, an anode of the light-emitting device is electrically connected to the power supply terminal, and a cathode of the light-emitting device is electrically connected to the first electrode of the switching transistor.

[0013] Optionally, in some embodiments of the present application, the second control module further includes a second resistor, one end of the second resistor is electrically connected to the power supply terminal, and the other end of the second resistor is electrically connected to a second node.

[0014] On the other hand, the present application provides a display device, including a display panel and the driving circuit as described above, and the display panel is electrically connected to the driving circuit.

[0015] In the driving circuit and display device provided by the embodiments of the present application, the driving circuit includes: a switching module, a first control module, and a second control module. The switching module is electrically connected to a power supply terminal, a ground terminal, and a first node, and the switching module is configured to control the conduction or disconnection between the power supply terminal and the first node. The first control module is electrically connected to the first node, and the first control module is configured to output a control signal based on the potential state of the first node. The control signal includes a first potential and a second potential. When the power supply terminal is conducted to the first node, the control signal is the first potential. The second control module is electrically connected to the first node, the power supply terminal, and the ground terminal, and the second control module is configured to control the conduction or disconnection between the power supply terminal and the ground terminal under the control of the switching module and the first control module. This driving circuit can achieve free switching between a high power supply voltage and a low power supply voltage. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 Structural schematic diagram of the driving circuit provided by the embodiments of the present application;

[0018] Figure 2 First circuit schematic diagram of the driving circuit provided by the embodiments of the present application;

[0019] Figure 3 Second circuit schematic diagram of the driving circuit provided by the embodiments of the present application;

[0020] Figure 4 Third circuit schematic diagram of the driving circuit provided by the embodiments of the present application;

[0021] Figure 5 Fourth circuit schematic diagram of the driving circuit provided by the embodiments of the present application;

[0022] Figure 6 Fifth circuit schematic diagram of the driving circuit provided by the embodiments of the present application;

[0023] Figure 7 Sixth circuit schematic diagram of the driving circuit provided by the embodiments of the present application;

[0024] Figure 8 Seventh circuit schematic diagram of the driving circuit provided by the embodiments of the present application;

[0025] Figure 9 The eighth circuit schematic diagram of the driving circuit provided by the embodiment of the present application;

[0026] Figure 10 The ninth circuit schematic diagram of the driving circuit provided by the embodiment of the present application;

[0027] Figure 11 The tenth circuit schematic diagram of the driving circuit provided by the embodiment of the present application;

[0028] Figure 12 The structural schematic diagram of the display device provided by the embodiment of the present application. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0030] The embodiment of the present application provides a driving circuit and a display device, which can realize the free switching between a high power supply voltage and a low power supply voltage. The following will be described in detail respectively. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments. In addition, in the description of the present application, the term "including" means "including but not limited to". The terms "first", "second", "third", etc. are only used as labels, which are used to distinguish different objects rather than to describe a specific order.

[0031] Please refer to Figure 1 , Figure 1 which is the structural schematic diagram of the driving circuit provided by the embodiment of the present application. As Figure 1As shown, the drive circuit 100 includes: a switch module 101, a first control module 102, and a second control module 103. Among them, the switch module 101 is electrically connected to the power supply terminal VDD, the ground terminal GND, and the first node N1. The switch module 101 is used to control the conduction or disconnection between the power supply terminal VDD and the first node N1. The first control module 102 is electrically connected to the first node N1. The first control module 102 is used to output a control signal based on the potential state of the first node N1. The control signal includes a first potential and a second potential. When the power supply terminal VDD is conductive to the first node N1, the control signal is the first potential. When the power supply terminal VDD is disconnected from the first node N1, the control signal is the second potential. The second control module 103 is electrically connected to the first node N1, the power supply terminal VDD, and the ground terminal GND. The second control module 103 is used to control the conduction or disconnection between the power supply terminal VDD and the ground terminal GND under the control of the switch module 101 and the first control module 102.

[0032] In the embodiment of the present application, the first potential of the control signal is a high potential, and the second potential of the control signal is a low potential.

[0033] The drive circuit provided in the present application closes the switch module 101, so that the power supply terminal VDD is conductive to the first node N1. The first control module 102 outputs a control signal with a high potential based on the high potential state of the first node N1. The second control module 103 controls the conduction between the power supply terminal VDD and the ground terminal GND under the control of the switch module 101 and the first control module 102. Correspondingly, by opening the switch module 101, the power supply terminal VDD can be disconnected from the first node N1. The first control module 102 outputs a control signal with a low potential based on the low potential state of the first node N1. The second control module 103 controls the disconnection between the power supply terminal VDD and the ground terminal GND under the control of the switch module 101 and the first control module 102, thereby realizing the free switching between the power high voltage and the power low voltage.

[0034] In some embodiments, please refer to Figure 2 , Figure 2 is the first circuit schematic diagram of the drive circuit provided in the embodiment of the present application. Combining Figure 1 , Figure 2 shown, in the drive circuit 100, specifically:

[0035] In the embodiments of the present application, the switch module 101 includes a switching switch SW. The switching switch SW includes a first pin SW1 and a second pin SW2. The first pin SW1 is electrically connected to the power supply terminal VDD, the second pin SW2 is electrically connected to the first node N1, and the ground terminal GND is electrically connected to the first node N1. It should be noted that the specific type of the switching switch SW and the number of pins included can be adjusted by those skilled in the art according to needs, and the present application does not make specific limitations here.

[0036] In some embodiments, please refer to Figure 3 , Figure 3 which is the second circuit schematic diagram of the driving circuit provided by the embodiments of the present application. Combining Figure 1 , Figure 3 as shown, the present application provides a driving circuit 200. In the driving circuit 200:

[0037] The switch module 101 includes a switching switch SW and a first resistor R1. The switching switch SW includes a first pin SW1 and a second pin SW2. The first pin SW1 is electrically connected to the power supply terminal VDD, the second pin SW2 is electrically connected to the first node N1, and the ground terminal GND is electrically connected to the first node N1. One end of the first resistor R1 is electrically connected to the first node N1, and the other end of the first resistor R1 is electrically connected to the ground terminal GND. Specifically, the setting of the first resistor R1 is beneficial to enhancing the pull-down ability of the driving chip IC. The first resistor R1 is grounded and pulled down, so that the voltage value of the first node N1 can be pulled down to 0. Furthermore, it can avoid the instability of the pull-down inside the driving chip IC, resulting in the instability of the performance of the driving circuit, so as to improve the display quality.

[0038] In some embodiments, please refer to Figure 4 , Figure 4 which is the third circuit schematic diagram of the driving circuit provided by the embodiments of the present application. Combining Figure 1 , Figure 4 as shown, the present application provides a driving circuit 300. In the driving circuit 300:

[0039] The switch module 101 includes a switching switch SW and a capacitor. The switching switch SW includes a first pin SW1 and a second pin SW2. The first pin SW1 is electrically connected to the power supply terminal VDD, the second pin SW2 is electrically connected to the first node N1, and the ground terminal GND is electrically connected to the first node N1. The first end of the capacitor is electrically connected to the power supply terminal VDD, and the second end of the capacitor is electrically connected to the first pin SW1.

[0040] Further, the switch module 101 may further include a first resistor R1. One end of the first resistor R1 is electrically connected to the first node N1, and the other end of the first resistor R1 is electrically connected to the ground terminal GND. Specifically, the setting of the first resistor R1 is beneficial to enhancing the pull-down ability of the driving chip IC. The first resistor R1 is grounded to pull down, so that the voltage value of the first node N1 can be pulled down to 0. Furthermore, it can avoid the instability of the pull-down inside the driving chip IC, resulting in the instability of the driving circuit performance, thereby improving the display quality.

[0041] In some embodiments, please refer to Figure 5 , Figure 5 which is the fourth circuit schematic diagram of the driving circuit provided by the embodiment of the present application. Combining Figure 1 , Figure 5 as shown, the present application provides a driving circuit 400. In the driving circuit 400:

[0042] The switch module 101 includes a switching switch SW and a capacitor. The switching switch SW includes a first pin SW1 and a second pin SW2. The first pin SW1 is electrically connected to the power supply terminal VDD, the second pin SW2 is electrically connected to the first node N1, and the ground terminal GND is electrically connected to the first node N1; the first end of the capacitor is electrically connected to the first node N1, and the second end of the capacitor is electrically connected to the ground terminal GND.

[0043] In some embodiments, please refer to Figure 6 , Figure 6 which is the fifth circuit schematic diagram of the driving circuit provided by the embodiment of the present application. As Figure 6 shown, the present application provides a driving circuit 500. In the driving circuit 500: The switch module 101 includes a switching switch SW. The switching switch SW includes a first pin SW1, a second pin SW2 and a third pin. The first pin SW1 is electrically connected to the power supply terminal VDD, the second pin SW2 is electrically connected to the first node N1, and the third pin is electrically connected to the ground terminal GND.

[0044] In some embodiments, please refer to Figure 7 , Figure 7 which is the sixth circuit schematic diagram of the driving circuit provided by the embodiment of the present application. As Figure 7 shown, the present application provides a driving circuit 600. In the driving circuit 600: The first control module 102 includes a driving chip IC. The driving chip IC is electrically connected to the first node N1. Preferably, the driving chip IC is a power management chip.

[0045] In the embodiment of the present application, when the switch module 101 is turned off, the power supply terminal VDD is conducted to the first node N1, and the driving chip IC outputs a high-potential control signal based on the high-potential state of the first node N1. The second control module 103 controls the conduction between the power supply terminal VDD and the ground terminal GND under the control of the switch module 101 and the first control module 102; correspondingly, when the switch module 101 is turned on, the power supply terminal VDD is disconnected from the first node N1, and the driving chip IC outputs a low-potential control signal based on the low-potential state of the first node N1. The second control module 103 controls the disconnection between the power supply terminal VDD and the ground terminal GND under the control of the switch module 101 and the first control module 102, thereby realizing the free switching between the high power supply voltage and the low power supply voltage.

[0046] In some embodiments, please refer to Figure 8 , Figure 8 which is the seventh circuit schematic diagram of the driving circuit provided by the embodiment of the present application. As Figure 8 shown, the present application provides a driving circuit 700. In the driving circuit 700:

[0047] The second control module 103 includes a switching transistor T0. The gate of the switching transistor T0 is electrically connected to the first node N1. The first electrode of the switching transistor T0 is electrically connected to the power supply terminal VDD. The second electrode of the switching transistor T0 is electrically connected to the ground terminal GND. Specifically, the switching transistor T0 can be one or more of a low-temperature polysilicon thin-film transistor, an oxide semiconductor thin-film transistor, or an amorphous silicon thin-film transistor.

[0048] In some embodiments, please refer to Figure 9 , Figure 9 which is the eighth circuit schematic diagram of the driving circuit provided by the embodiment of the present application. As Figure 9 shown, the present application provides a driving circuit 800. In the driving circuit 800:

[0049] The second control module 103 includes a switching transistor T0 and a second resistor R2. The gate of the switching transistor T0 is electrically connected to the first node N1. The first electrode of the switching transistor T0 is electrically connected to the power supply terminal VDD. The second electrode of the switching transistor T0 is electrically connected to the ground terminal GND. One end of the second resistor R2 is electrically connected to the power supply terminal VDD, and the other end of the second resistor R2 is electrically connected to the second node N2. Such a design can control the current flowing through the second node N2, protect the stability of the input current of the switching transistor T0, and avoid damage to the switching transistor T0 caused by a short circuit due to too high a power supply voltage provided by the power supply terminal VDD or the switching of the high and low power supply voltages.

[0050] Specifically, the switching transistor T0 can be one or more of a low-temperature polysilicon thin-film transistor, an oxide semiconductor thin-film transistor, or an amorphous silicon thin-film transistor.

[0051] In some embodiments, please refer to Figure 10 , Figure 10 which is the ninth circuit schematic diagram of the driving circuit provided by the embodiment of the present application. Combining Figure 1 , Figure 10 as shown, the present application provides a driving circuit 900. In the driving circuit 900: The second control module 103 includes a switching transistor T0, a second resistor R2, and a light-emitting device D. Among them, the gate of the switching transistor T0 is electrically connected to the first node N1, the first electrode of the switching transistor T0 is electrically connected to the power supply terminal VDD, and the second electrode of the switching transistor T0 is electrically connected to the ground terminal GND; One end of the second resistor R2 is electrically connected to the power supply terminal VDD, and the other end of the second resistor R2 is electrically connected to the second node N2; The anode of the light-emitting device D is electrically connected to the power supply terminal VDD, and the cathode of the light-emitting device D is electrically connected to the first electrode of the switching transistor T0. Such a design can control the current flowing through the second node N2, protect the stability of the input current of the light-emitting device D, and avoid damage to the light-emitting device D caused by a too high power supply voltage provided by the power supply terminal VDD or a short circuit caused by the switching of the high and low potentials of the power supply voltage.

[0052] Specifically, the switching transistor T0 can be one or more of a low-temperature polysilicon thin-film transistor, an oxide semiconductor thin-film transistor, or an amorphous silicon thin-film transistor.

[0053] The light-emitting device D can be a micro light-emitting diode (Micro Light Emitting Diode, Micro-LED), a mini light-emitting diode (Mini Light Emitting Diode, Mini-LED), or an organic light-emitting diode (Organic Light-Emitting Diode, OLED).

[0054] Furthermore, the embodiment of the present application will illustrate a complete circuit of the driving circuit. Please refer to Figure 11 , Figure 11 which is the tenth circuit schematic diagram of the driving circuit provided by the embodiment of the present application. As Figure 11 shown, the driving circuit provided by the embodiment of the present application includes a switching switch SW, a driving chip IC, a second resistor R2, a switching transistor T0, a light-emitting device D, and a first resistor R1.

[0055] The switching switch SW includes a first pin SW1 and a second pin SW2. The first pin SW1 is electrically connected to the power supply terminal VDD, the second pin SW2 is electrically connected to the first node N1, and the ground terminal GND is electrically connected to the first node N1. One end of the first resistor R1 is electrically connected to the first node N1, and the other end of the first resistor R1 is electrically connected to the ground terminal GND. The driving chip IC is electrically connected to the first node N1. The gate of the switching transistor T0 is electrically connected to the first node N1, the first electrode of the switching transistor T0 is electrically connected to the power supply terminal VDD, and the second electrode of the switching transistor T0 is electrically connected to the ground terminal GND. The anode of the light-emitting device D is electrically connected to the power supply terminal VDD, and the cathode of the light-emitting device D is electrically connected to the first electrode of the switching transistor T0. One end of the second resistor R2 is electrically connected to the power supply terminal VDD, and the other end of the second resistor R2 is electrically connected to the second node N2.

[0056] In the embodiment of the present application, both the first resistor R1 and the second resistor R2 can be adjustable resistors or other types of resistors, and the resistance values of the first resistor R1 and the second resistor R2 can be equal or unequal.

[0057] In the driving circuit 100 provided by the present application, by closing the switching switch SW, the power supply terminal VDD is conducted to the first node N1, and the driving chip IC outputs a high-potential control signal based on the high-potential state of the first node N1. At this time, the high potential of the first node N1 turns on the switching transistor T0, and the power supply terminal VDD is conducted to the ground terminal GND to form a light-emitting loop, and the light-emitting device D emits light; correspondingly, by opening the switching switch SW, the power supply terminal VDD is disconnected from the first node N1, and the driving chip IC outputs a low-potential control signal based on the low-potential state of the first node N1. At the same time, the first resistor R1 is grounded and pulled down, so that the voltage value of the first node N1 tends to 0. At this time, the switching transistor T0 is turned off, the power supply terminal VDD is disconnected from the ground terminal GND, and the light-emitting device D does not emit light, thereby realizing the free switching between the high power supply voltage and the low power supply voltage.

[0058] Please refer to Figure 12 , Figure 12 which is a schematic structural diagram of the display device provided by the embodiment of the present application. As Figure 12 shown, the present application provides a display device 1000, which includes a display panel 1001 and the driving circuit as above, such as the driving circuit 100. The display panel 1001 is electrically connected to the driving circuit 100. Among them, the driving circuit 100 is similar in structure and principle to the above-mentioned driving circuit, and will not be elaborated here.

[0059] The display device can be: any product or component with a display function such as a mobile phone, a tablet computer, a television set, a monitor, a notebook computer, a digital photo frame, a navigator, etc. Other essential components of the display device are understood by those of ordinary skill in the art and will not be elaborated herein, nor should they be regarded as a limitation to the present invention.

[0060] In the driving circuit and the display device provided by the embodiments of the present application, the driving circuit includes: a switch module 101, a first control module 102, and a second control module 103. The switch module 101 is electrically connected to a power supply terminal VDD, a ground terminal GND, and a first node N1. The switch module 101 is configured to control the conduction or disconnection between the power supply terminal VDD and the first node N1. The first control module 102 is electrically connected to the first node N1. The first control module 102 is configured to output a control signal based on the potential state of the first node N1. The control signal includes a first potential and a second potential. When the power supply terminal VDD is conducted with the first node N1, the control signal is the first potential. The second control module 103 is electrically connected to the first node N1, the power supply terminal VDD, and the ground terminal GND. The second control module 103 is configured to control the conduction or disconnection between the power supply terminal VDD and the ground terminal GND under the control of the switch module 101 and the first control module 102. This driving circuit can achieve free switching between a high power supply voltage and a low power supply voltage.

[0061] The above has introduced in detail a driving circuit and a display device provided by the embodiments of the present application. Specific examples are used herein to illustrate the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. At the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A driving circuit, characterized in that, it includes: a switching module, a first control module, and a second control module; wherein, the switching module is electrically connected to a power supply terminal, a ground terminal, and a first node, and the switching module is used to control the conduction or disconnection between the power supply terminal and the first node; the switching module includes a switching switch, the switching switch includes a first pin and a second pin, the first pin is electrically connected to the power supply terminal, the second pin is electrically connected to the first node, and the ground terminal is electrically connected to the first node; or, the switching module includes a switching switch, the switching switch includes a first pin, a second pin, and a third pin, the first pin is electrically connected to the power supply terminal, the second pin is electrically connected to the first node, and the third pin is electrically connected to the ground terminal; the first control module is electrically connected to the first node, and the first control module is used to output a control signal based on the potential state of the first node, and the control signal includes a first potential and a second potential; when the power supply terminal is conductive to the first node, the control signal is the first potential; when the power supply terminal is disconnected from the first node, the control signal is the second potential; the second control module is electrically connected to the first node, the power supply terminal, and the ground terminal, and the second control module is used to control the conduction or disconnection between the power supply terminal and the ground terminal under the control of the switching module.

2. The driving circuit according to claim 1, characterized in that, in the case where the switching module includes a switching switch, the switching switch includes a first pin and a second pin, the first pin is electrically connected to the power supply terminal, the second pin is electrically connected to the first node, and the ground terminal is electrically connected to the first node, the switching module further includes a first resistor, one end of the first resistor is electrically connected to the first node, and the other end of the first resistor is electrically connected to the ground terminal.

3. The driving circuit according to claim 1, characterized in that, in the case where the switching module includes a switching switch, the switching switch includes a first pin and a second pin, the first pin is electrically connected to the power supply terminal, the second pin is electrically connected to the first node, and the ground terminal is electrically connected to the first node, the switching module further includes a capacitor, a first end of the capacitor is electrically connected to the power supply terminal, a second end of the capacitor is electrically connected to the first pin, or, a first end of the capacitor is electrically connected to the first node, and a second end of the capacitor is electrically connected to the ground terminal.

4. The driving circuit according to claim 1, characterized in that, the first control module includes a driving chip, and the driving chip is electrically connected to the first node.

5. The driving circuit according to claim 1, characterized in that, the second control module includes a switching transistor, a gate of the switching transistor is electrically connected to the first node, a first electrode of the switching transistor is electrically connected to the power supply terminal, and a second electrode of the switching transistor is electrically connected to the ground terminal.

6. The driving circuit according to claim 5, wherein, the second control module further includes a light-emitting device, an anode of the light-emitting device is electrically connected to the power supply terminal, and a cathode of the light-emitting device is electrically connected to a first electrode of the switching transistor.

7. The driving circuit according to claim 5 or 6, wherein, the second control module further includes a second resistor, one end of the second resistor is electrically connected to the power supply terminal, and the other end of the second resistor is electrically connected to the second node.

8. A display device, wherein, it includes a display panel and the driving circuit according to any one of claims 1-7, and the display panel is electrically connected to the driving circuit.

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