Driving circuit, driving method and display device

Abstract

The driving circuit, driving method and display device provided in the embodiment of the present application include: a power supply end, a driving module, a control module and an output module, wherein the driving module is electrically connected to the power supply end and the control module, and the driving module is used to adjust the input voltage provided by the power supply end to the driving voltage and transmit it to the control module; the control module is electrically connected to the power supply end, the ground end and the output module, and the control module is used to transmit the driving voltage to the output module under the control of the power supply end and the driving module, and the output module is used to generate an output voltage under the control of the control module. The driving circuit can solve the problem of power management chip restarting when the driving module and the power management chip are used together.

Description

Technical Field

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

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

[0003] Since the input voltage in the driving circuit does not match the driving voltage required by the power management chip, for example, the input voltage is low, the driving module needs to boost the input voltage to power the power management chip. In the existing driving circuit, the power management chip has started working during the driving voltage rising process. When all modules managed by the power management chip start working, the load increases. If the driving voltage is still in the rising stage at this time, the potential of the driving module will be pulled down as the subsequent load increases, and the problem of restarting the power management chip will occur. Therefore, how to solve the problem of restarting the power management chip when the driving module and the power management chip are used together is an urgent problem that panel manufacturers need to solve. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a driving circuit, a driving method and a display device, wherein the driving circuit can solve the problem of power management chip starting and restarting when the driving module and the power management chip are used in combination.

[0005] On the one hand, an embodiment of the present application provides a driving circuit, including: a power supply end, a driving module, a control module and an output module, wherein the driving module is electrically connected to the power supply end and the control module, and the driving module is used to adjust the input voltage provided by the power supply end to a driving voltage and transmit it to the control module; the control module is electrically connected to the power supply end, the ground end and the output module, and the control module is used to transmit the driving voltage to the output module under the control of the power supply end and the driving module, and the output module is used to generate an output voltage under the control of the control module.

[0006] Optionally, in some embodiments of the present application, the driving module includes a boost chip, a power pin of the boost chip is electrically connected to the power end, and an output pin of the boost chip is electrically connected to the control module.

[0007] Optionally, in some embodiments of the present application, the control module includes a first resistor, a second resistor, a comparator, and a transistor, 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 second node; one end of the second resistor is electrically connected to the second node, and the other end of the second resistor is electrically connected to the ground terminal; the positive input terminal of the comparator is electrically connected to the second node, the reverse input terminal of the comparator is electrically connected to the power supply terminal, and the output terminal of the comparator is electrically connected to a third node; the base of the transistor is electrically connected to the third node, the first pole of the transistor is electrically connected to the first node, and the second pole of the transistor is electrically connected to the output module.

[0008] Optionally, in some embodiments of the present application, the output module includes a power management chip, a power pin of the power management chip is electrically connected to the control module, and an output pin of the power management chip is used to provide an output voltage.

[0009] Optionally, in some embodiments of the present application, the type of the transistor includes an NPN transistor.

[0010] Optionally, in some embodiments of the present application, at least one of the first resistor and the second resistor is an adjustable resistor.

[0011] Optionally, in some embodiments of the present application, the resistance value of the first resistor is not equal to the resistance value of the second resistor.

[0012] Optionally, in some embodiments of the present application, the driving module includes a buck chip, a power pin of the buck chip is electrically connected to the power end, and an output pin of the buck chip is electrically connected to the control module.

[0013] Optionally, in some embodiments of the present application, the driving circuit as described above is adopted, and the driving method includes the following steps: the power supply end transmits the input voltage to the driving module and the control module; the driving module adjusts the input voltage to the driving voltage, and transmits the driving voltage to the control module; the control module transmits the driving voltage to the output module under the control of the power supply end and the driving module; the output module generates an output voltage under the control of the control module.

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

[0015] In the driving circuit, driving method and display device provided in the embodiment of the present application, the driving circuit includes: a power supply end, a driving module, a control module and an output module, the driving module is electrically connected to the power supply end and the control module, the driving module is used to adjust the input voltage provided by the power supply end to the driving voltage and transmit it to the control module; the control module is electrically connected to the power supply end, the ground end and the output module, the control module is used to transmit the driving voltage to the output module under the control of the power supply end and the driving module, and the output module is used to generate an output voltage under the control of the control module. The driving circuit can solve the problem of power management chip restarting when the driving module and the power management chip are used together. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 A schematic diagram of the structure of a driving circuit provided in an embodiment of the present application;

[0018] Figure 2 A circuit diagram of a driving circuit provided in the first embodiment of the present application;

[0019] Figure 3 A circuit diagram of a driving circuit provided in a second embodiment of the present application;

[0020] Figure 4 A schematic diagram of a driving method according to an embodiment of the present invention;

[0021] Figure 5 A schematic diagram of the structure of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0023] The embodiments of the present application provide a driving circuit, a driving method and a display device, which can solve the problem of power management chip restarting when the driving module and the power management chip are used together. The following are detailed descriptions. It should be noted that the description order of the following embodiments is not intended to 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 used only as labels to distinguish different objects, rather than to describe a specific order.

[0024] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of the driving circuit provided in the embodiment of the present application. Figure 1 As shown, the driving circuit includes: a power supply terminal VIN, a driving module 101, a control module 102 and an output module 103. The driving module 101 is electrically connected to the power supply terminal VIN and the control module 102. The driving module 101 is used to adjust the input voltage provided by the power supply terminal VIN to a driving voltage and transmit it to the control module 102; the control module 102 is electrically connected to the power supply terminal VIN, the ground terminal and the output module 103. The control module 102 is used to transmit the driving voltage to the output module 103 under the control of the power supply terminal VIN and the driving module 101. The output module 103 is used to generate an output voltage under the control of the control module 102.

[0025] The driving circuit provided in the embodiment of the present application is configured with a control module 102 to detect the magnitude of the driving voltage output by the driving module 101. Only when the magnitude of the driving voltage meets the normal working requirements of the output module 103, the control module 102 transmits the driving voltage to the output module 103. This can solve the problem of the output module 103 starting up and restarting when the driving module 101 and the output module 103 are used in combination.

[0026] See also Figure 2 , Figure 2 FIG. 1 is a circuit diagram of a driving circuit provided in the first embodiment of the present application. Figure 2 and continue to refer to Figure 1 The driving module 101 includes a boost chip BOOST, a power pin of the boost chip BOOST is electrically connected to the power terminal VIN, and an output pin of the boost chip BOOST is electrically connected to the control module 102 .

[0027] In the embodiment of the present application, the control module 102 includes a first resistor R1, a second resistor R2, a comparator U0, and a transistor Q0, 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 second node N2; one end of the second resistor R2 is electrically connected to the second node N2, and the other end of the second resistor R2 is electrically connected to the ground end; the positive input end of the comparator U0 is electrically connected to the second node N2, the reverse input end of the comparator U0 is electrically connected to the power supply end VIN, and the output end of the comparator U0 is electrically connected to the third node N3; the base of the transistor Q0 is electrically connected to the third node N3, the first pole of the transistor Q0 is electrically connected to the first node N1, and the second pole of the transistor Q0 is electrically connected to the output module 103.

[0028] In the embodiment of the present application, the output module 103 includes a power management chip PMIC (power management integrated circuit, PMIC), the power pin of the power management chip PMIC is electrically connected to the control module 102, and the output pin of the power management chip PMIC is used to provide an output voltage.

[0029] In the embodiment of the present application, the type of transistor Q0 includes an NPN transistor Q0. The NPN transistor Q0 is composed of three semiconductors, two N-type semiconductors and one P-type semiconductor, the P-type semiconductor is in the middle, and the two N-type semiconductors are on both sides. The NPN transistor Q0 plays the role of current amplification and control module 102 and output module 103 between the conduction or cutoff.

[0030] In the embodiment of the present application, the resistance of the first resistor R1 is not equal to the resistance of the second resistor R2. For example, the resistance of the first resistor R1 is 14K, and the resistance of the second resistor R2 is 10K. Specifically, assuming that the input voltage of the power supply terminal VIN is 5 volts, the voltage of the reverse input terminal of the comparator U0 is 5 volts. If the driving voltage output by the boost chip BOOST is less than 12 volts, the voltage of the positive input terminal of the comparator U0 is less than 5 volts. Specifically, the current value of the positive input terminal of the comparator U0 is equal to the driving voltage actually output by the boost chip BOOST divided by the sum of the resistance values ​​of the first resistor R1 and the second resistor R2. Correspondingly, the voltage of the positive input terminal of the comparator U0 is equal to the current value of the positive terminal of the comparator U0 multiplied by the resistance value of the second resistor R2. At this time, the voltage of the positive input terminal of the comparator U0 is less than the voltage of the reverse input terminal of the comparator U0, then the comparator U0 outputs a low-level signal to the base of the transistor Q0, and the transistor Q0 is turned off. Only when the driving voltage output by the boost chip BOOST is after 12 volts, so that the voltage at the positive input end of the comparator U0 is greater than the voltage at the reverse input end of the comparator U0, the comparator U0 will output a high-level signal to the base of the transistor Q0, and then the transistor Q0 is turned on, and the driving voltage is transmitted to the output module 103, that is, the power management chip PMIC, and then the power management chip PMIC starts to work. Specifically, the resistance value of the first resistor R1 and the resistance value of the second resistor R2 can also be equal, as long as the driving voltage output by the boost chip BOOST meets the working voltage of the power management chip PMIC, the voltage at the positive input end of the comparator U0 is greater than the voltage at the reverse input end of the comparator U0.

[0031] The driving circuit provided in the embodiment of the present application sets a control module 102 to detect the size of the driving voltage output by the boost chip BOOST. Only when the driving voltage meets the normal working requirements of the output module 103, the comparator U0 in the control module 102 outputs a high-level signal to the transistor Q0. Then, the transistor Q0 is turned on, and the driving voltage is transmitted to the power management chip PMIC. This can solve the problem of powering on and restarting the power management chip PMIC when the boost chip BOOST and the power management chip PMIC are used together.

[0032] As a specific implementation of this application, please refer to Figure 3 , Figure 3 FIG. 1 is a circuit diagram of a driving circuit provided in the second embodiment of the present application. Figure 3 As shown, at least one of the first resistor R1 and the second resistor R2 is an adjustable resistor.

[0033] In the embodiment of the present application, the driving module 101 includes a boost chip BOOST, a power pin of the boost chip BOOST is electrically connected to the power terminal VIN, and an output pin of the boost chip BOOST is electrically connected to the control module 102 .

[0034] In the embodiment of the present application, the control module 102 includes a first resistor R1, a second resistor R2, a comparator U0, and a transistor Q0, 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 second node N2; one end of the second resistor R2 is electrically connected to the second node N2, and the other end of the second resistor R2 is electrically connected to the ground end; the positive input end of the comparator U0 is electrically connected to the second node N2, the reverse input end of the comparator U0 is electrically connected to the power supply end VIN, and the output end of the comparator U0 is electrically connected to the third node N3; the base of the transistor Q0 is electrically connected to the third node N3, the first pole of the transistor Q0 is electrically connected to the first node N1, and the second pole of the transistor Q0 is electrically connected to the output module 103.

[0035] In the embodiment of the present application, the output module 103 includes a power management chip PMIC, a power pin of the power management chip PMIC is electrically connected to the control module 102, and an output pin of the power management chip PMIC is used to provide an output voltage.

[0036] In the embodiment of the present application, the type of transistor Q0 includes an NPN transistor Q0. The NPN transistor Q0 is composed of three semiconductors, two N-type semiconductors and one P-type semiconductor, the P-type semiconductor is in the middle, and the two N-type semiconductors are on both sides. The NPN transistor Q0 plays the role of current amplification and control module 102 and output module 103 between the conduction or cutoff.

[0037] In the embodiment of the present application, in the embodiment of the present application, the first resistor R1 and the second resistor R2 are both adjustable resistors. Among them, the set resistance value of the first resistor R1 and the set resistance value of the second resistor R2 may not be equal, or they may be equal. In this embodiment, the set resistance value of the first resistor R1 and the set resistance value of the second resistor R2 may not be equal as an example. For example, the resistance value of the first resistor R1 is 14K, and the resistance value of the second resistor R2 is 10K. Specifically, assuming that the input voltage of the power supply terminal VIN is 5 volts, the voltage of the reverse input terminal of the comparator U0 is 5 volts. If the driving voltage output by the boost chip BOOST is less than 12 volts, the voltage of the positive input terminal of the comparator U0 is less than 5 volts. Specifically, the current value of the positive input terminal of the comparator U0 is equal to the driving voltage actually output by the boost chip BOOST divided by the sum of the resistance values ​​of the first resistor R1 and the second resistor R2. Accordingly, the voltage of the positive input terminal of the comparator U0 is equal to the current value of the positive terminal of the comparator U0 multiplied by the resistance value of the second resistor R2. At this time, the voltage at the positive input end of the comparator U0 is less than the voltage at the reverse input end of the comparator U0, and the comparator U0 outputs a low-level signal to the base of the transistor Q0, and the transistor Q0 is turned off. Only when the driving voltage output by the boost chip BOOST is after 12 volts, so that the voltage at the positive input end of the comparator U0 is greater than the voltage at the reverse input end of the comparator U0, the comparator U0 outputs a high-level signal to the base of the transistor Q0, and then the transistor Q0 is turned on, and the driving voltage is transmitted to the output module 103, that is, the power management chip PMIC, and then the power management chip PMIC starts to work. Specifically, the resistance value of the first resistor R1 and the resistance value of the second resistor R2 can be adjusted according to actual needs, and it is only necessary to meet the condition that the driving voltage output by the boost chip BOOST meets the working voltage of the power management chip PMIC, and the voltage at the positive input end of the comparator U0 is greater than the voltage at the reverse input end of the comparator U0. Such a design is conducive to ensuring the stability of the power management chip PMIC, and at the same time, expanding the scope of application of the drive circuit, and improving product yield and competitiveness.

[0038] The driving circuit provided in the embodiment of the present application sets a control module 102 to detect the size of the driving voltage output by the boost chip BOOST. Only when the driving voltage meets the normal working requirements of the output module 103, the comparator U0 in the control module 102 outputs a high-level signal to the transistor Q0. Then, the transistor Q0 is turned on, and the driving voltage is transmitted to the power management chip PMIC. This can solve the problem of powering on and restarting the power management chip PMIC when the boost chip BOOST and the power management chip PMIC are used together.

[0039] As a specific implementation of the present application, the driving module 101 includes a buck chip, a power pin of the buck chip is electrically connected to the power terminal VIN, and an output pin of the buck chip is electrically connected to the control module 102. Similarly, by setting the control module 102 to detect the magnitude of the driving voltage output by the buck chip, only when the driving voltage magnitude meets the normal working requirements of the output module 103, the comparator U0 in the control module 102 outputs a high-level signal to the transistor Q0, and then the transistor Q0 is turned on, and the driving voltage is transmitted to the power management chip PMIC, which can solve the problem of the power management chip PMIC starting and restarting when the buck chip and the power management chip PMIC are used together.

[0040] See also Figure 4 , Figure 4 Schematic diagram of the process of the driving method provided in the embodiment of the present application. Figure 4 As shown, the present application provides a driving method, the driving method adopts the above-mentioned driving circuit, and the driving method comprises the following steps:

[0041] S10 , the power terminal VIN transmits the input voltage to the driving module 101 and the control module 102 .

[0042] In the embodiment of the present application, the input voltage provided by the power supply terminal VIN may be 5 volts or 3.3 volts. Specifically, it may be adjusted according to actual needs, and the present application does not limit it here.

[0043] In the embodiment of the present application, the driving module 101 includes a boost chip BOOST or a buck chip, a power pin of the boost chip BOOST or the buck chip is electrically connected to the power terminal VIN, and an output pin of the boost chip BOOST or the buck chip is electrically connected to the control module 102.

[0044] In the embodiment of the present application, the control module 102 includes a first resistor R1, a second resistor R2, a comparator U0, and a transistor Q0, 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 second node N2; one end of the second resistor R2 is electrically connected to the second node N2, and the other end of the second resistor R2 is electrically connected to the ground end; the positive input end of the comparator U0 is electrically connected to the second node N2, the reverse input end of the comparator U0 is electrically connected to the power supply end VIN, and the output end of the comparator U0 is electrically connected to the third node N3; the base of the transistor Q0 is electrically connected to the third node N3, the first pole of the transistor Q0 is electrically connected to the first node N1, and the second pole of the transistor Q0 is electrically connected to the output module 103.

[0045] In the embodiment of the present application, the resistance value of the first resistor R1 and the resistance value of the second resistor R2 can be adjusted according to actual needs, as long as the driving voltage output by the boost chip BOOST or the buck chip meets the working voltage of the power management chip PMIC, and the voltage at the positive input end of the comparator U0 is greater than the voltage at the reverse input end of the comparator U0. Such a design is conducive to ensuring the stability of the power management chip PMIC, and at the same time, expanding the application scope of the driving circuit and improving product yield and competitiveness.

[0046] S20 , the driving module 101 adjusts the input voltage to a driving voltage, and transmits the driving voltage to the control module 102 .

[0047] In the embodiment of the present application, the boost chip BOOST or the buck chip boosts or bucks the input voltage to adjust it to a driving voltage that matches the voltage required for the output module 103 to work, and transmits the driving voltage to the control module 102.

[0048] S30 , the control module 102 transmits the driving voltage to the output module 103 under the control of the power supply terminal VIN and the driving module 101 ; the output module 103 generates an output voltage under the control of the control module 102 .

[0049] In the embodiment of the present application, the output module 103 includes a power management chip PMIC, a power pin of the power management chip PMIC is electrically connected to the control module 102, and an output pin of the power management chip PMIC is used to provide an output voltage.

[0050] In the embodiment of the present application, the control module 102 has the function of detecting the magnitude of the driving voltage output by the boost chip BOOST or the buck chip. By connecting the positive input terminal of the comparator U0 to the driving voltage, the reverse input terminal of the comparator U0 to the input voltage, and the output terminal of the comparator U0 to the base of the transistor Q0, when the voltage at the positive input terminal of the comparator U0 is greater than the voltage at the reverse input terminal of the comparator U0, the comparator U0 outputs a high-level signal to the base of the transistor Q0, and then the transistor Q0 is turned on, and the driving voltage is transmitted to the output module 103, that is, the power management chip PMIC, and then the power management chip PMIC starts to work. Such a design is conducive to ensuring the stability of the power management chip PMIC, and can solve the problem of the power management chip PMIC starting and restarting when the boost chip BOOST and the power management chip PMIC are used together. At the same time, it expands the scope of application of the drive circuit and improves the product yield and competitiveness.

[0051] See also Figure 5 , Figure 5 This is a schematic diagram of the structure of the display device provided in the embodiment of the present application. Figure 5As shown, the present application provides a display device 100, which includes a display panel 20 and the above-mentioned driving circuit 10, and the display panel 20 is electrically connected to the driving circuit 10. The structure and principle of the driving circuit 10 are similar to those of the above-mentioned driving circuit 10, which will not be repeated here.

[0052] The display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, etc. Other essential components of the display device are well understood by those skilled in the art, and are not described in detail herein, nor should they be used as limitations on the present invention.

[0053] In the driving circuit, driving method and display device provided in the embodiments of the present application, the driving circuit includes: a power supply terminal VIN, a driving module 101, a control module 102 and an output module 103, the driving module 101 is electrically connected to the power supply terminal VIN and the control module 102, the driving module 101 is used to adjust the input voltage provided by the power supply terminal VIN to a driving voltage and transmit it to the control module 102; the control module 102 is electrically connected to the power supply terminal VIN, the ground terminal and the output module 103, the control module 102 is used to transmit the driving voltage to the output module 103 under the control of the power supply terminal VIN and the driving module 101, and the output module 103 is used to generate an output voltage under the control of the control module 102. The control module 102 is set to detect the size of the driving voltage output by the buck chip. Only when the driving voltage meets the normal working requirements of the output module 103, the comparator U0 in the control module 102 outputs a high-level signal to the transistor Q0. Then, the transistor Q0 is turned on and the driving voltage is transmitted to the power management chip PMIC. This can solve the problem of powering on and restarting the power management chip PMIC when the buck chip and the power management chip PMIC are used together.

[0054] The above is a detailed introduction to a driving circuit, a driving method and a display device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A driving circuit, characterized in that: include: Power supply, drive module, control module and output module, The driving module is electrically connected to the power supply end and the control module, and is used to adjust the input voltage provided by the power supply end into a driving voltage and transmit it to the control module; The control module is electrically connected to the power supply terminal, the ground terminal and the output module, the control module is used to transmit the driving voltage to the output module under the control of the power supply terminal and the driving module, and the output module is used to generate an output voltage under the control of the control module; The output module includes a power management chip, and the power pin of the power management chip is electrically connected to the control module, wherein the control module is used to transmit the driving voltage to the power management chip under the control of the power supply end and the driving module, and the power management chip is used to generate an output voltage under the control of the control module.

2. The driving circuit according to claim 1, characterized in that: The driving module comprises a boost chip, a power pin of the boost chip is electrically connected to the power end, and an output pin of the boost chip is electrically connected to the control module.

3. The driving circuit according to claim 2, characterized in that: The control module includes a first resistor, a second resistor, a comparator, and a transistor, 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 second node; One end of the second resistor is electrically connected to the second node, and the other end of the second resistor is electrically connected to the ground terminal; The positive input terminal of the comparator is electrically connected to the second node, the negative input terminal of the comparator is electrically connected to the power supply terminal, and the output terminal of the comparator is electrically connected to the third node; The base of the transistor is electrically connected to the third node, the first electrode of the transistor is electrically connected to the first node, and the second electrode of the transistor is electrically connected to the output module.

4. The driving circuit according to claim 3, characterized in that: The type of the transistor includes an NPN transistor.

5. The driving circuit according to claim 3, characterized in that: At least one of the first resistor and the second resistor is an adjustable resistor.

6. The driving circuit according to claim 3, characterized in that: The resistance value of the first resistor is not equal to the resistance value of the second resistor.

7. The driving circuit according to claim 1, characterized in that: The driving module comprises a buck chip, a power pin of the buck chip is electrically connected to the power end, and an output pin of the buck chip is electrically connected to the control module.

8. A driving method, characterized in that: Using the driving circuit according to any one of claims 1 to 7, the driving method comprises the following steps: The power supply terminal transmits the input voltage to the driving module and the control module; The driving module adjusts the input voltage into a driving voltage, and transmits the driving voltage to the control module; The control module transmits the driving voltage to the output module under the control of the power supply terminal and the driving module; the output module generates an output voltage under the control of the control module.

9. A display device, characterized in that: It comprises a display panel and a driving circuit as claimed in any one of claims 1 to 7, wherein the display panel is electrically connected to the driving circuit.

Images