Driving circuit and display device

Abstract

The utility model provides a driving circuit and a display device, the driving circuit comprises a control module, a first control circuit, a second control circuit, a first display card and a second display card, the first control circuit is electrically connected between a first end of a display and the second display card, and the second control circuit is electrically connected between the first display card and the first end of the display. The first end of the control module is electrically connected with the control end of the first control circuit, and the second end of the control module is electrically connected with the control end of the second control circuit. When the second display card is matched with the display requirement of the display, the control module controls the first control circuit to conduct electric connection between the first end of the display and the second display card; and when the first display card is matched with the display requirement of the display, the control module controls the second control circuit to conduct the electric connection between the first display card and the first end of the display. According to the embodiment of the invention, the switching complexity of the control equipment in the display can be simplified, and the misconnection risk between the control equipment and the display is reduced.

Description

TECHNICAL FIELD

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

[0002] In practical applications, different displays have different display capabilities, so different displays need to be matched with corresponding control devices for control. When the existing control device cannot meet the display requirements of the display, the user needs to remove the current control device and connect the display with the corresponding control device to meet the display requirements of the display, but this operation method is tedious and is prone to misconnection. CONTENT OF THE UTILITY MODEL

[0003] In view of the above, the present application provides a driving circuit and a display device to solve the problem of tedious operation and misconnection when replacing the control device in the display.

[0004] A first aspect of the present application provides a driving circuit, which includes a control module, a first control circuit, a second control circuit, a first graphics card and a second graphics card. The first control circuit is electrically connected between a first end of a display and the second graphics card, and the second control circuit is electrically connected between the first graphics card and the first end of the display. The first end of the control module is electrically connected to the control end of the first control circuit, and the second end of the control module is electrically connected to the control end of the second control circuit. The control module is configured to: output a first signal to the control end of the first control circuit when the second graphics card matches the display requirements of the display, so as to turn on the electrical connection between the first end of the display and the second graphics card through the first control circuit; and output a second signal to the control end of the second control circuit when the first graphics card matches the display requirements of the display, so as to turn on the electrical connection between the first graphics card and the first end of the display through the second control circuit.

[0005] When the second graphics card matches the display requirements of the display by using the embodiment of the present application, the control module outputs a first signal to the control end of the first control circuit to control the first control circuit to turn on the electrical connection between the first end of the display and the second graphics card, or when the first graphics card matches the display requirements of the display, the control module outputs a second signal to the control end of the second control circuit to control the second control circuit to turn on the electrical connection between the first graphics card and the first end of the display. This makes the user not need to remove the control device to connect the display with the corresponding control device, simplifies the switching complexity of the control device in the display, and reduces the risk of misconnection between the control device and the display.

[0006] As an optional implementation, the control module comprises a controller and a NOT gate circuit. A first end of the controller is electrically connected to an input end of the NOT gate circuit, an output end of the NOT gate circuit is electrically connected to a control end of the first control circuit, and a first end of the controller is electrically connected to a control end of the second control circuit.

[0007] As an optional implementation, the NOT gate circuit comprises a first switch tube. A first end of the first switch tube is electrically connected to the first end of the controller, a second end of the first switch tube is electrically connected to the control end of the first control circuit, and the second end of the first switch tube is electrically connected to a power supply. A third end of the first switch tube is grounded.

[0008] As an optional implementation, the NOT gate circuit further comprises a first resistor and a second resistor. One end of the first resistor is electrically connected to a connection point between the first end of the first switch tube and the first end of the controller, and the other end of the first resistor is grounded. One end of the second resistor is electrically connected to the power supply, the other end of the second resistor is electrically connected to the second end of the first switch tube, and the other end of the second resistor is electrically connected to the control end of the first control circuit.

[0009] As an optional implementation, the driving circuit further comprises a third control circuit. A first end of the third control circuit is electrically connected to a first end of the display, a second end of the third control circuit is electrically connected to the first control circuit and the second control circuit, and the second end of the third control circuit is electrically connected to a second end of the controller. A third end of the third control circuit is electrically connected to a second end of the display.

[0010] As an optional implementation, a third end of the controller is electrically connected to the first graphics card.

[0011] As an optional implementation, a fourth end of the controller is electrically connected to the second end of the display.

[0012] The second aspect of the present application can also provide a display device comprising a display and a driving circuit. The driving circuit comprises a control module, a first control circuit, a second control circuit, a first graphics card and a second graphics card. The first control circuit is electrically connected between a first end of the display and the second graphics card, the second control circuit is electrically connected between the first graphics card and the first end of the display, a first end of the control module is electrically connected to a control end of the first control circuit, and a second end of the control module is electrically connected to a control end of the second control circuit. The control module is configured to: output a first signal to the control end of the first control circuit to turn on the electrical connection between the first end of the display and the second graphics card through the first control circuit when the second graphics card matches the display requirement of the display; and output a second signal to the control end of the second control circuit to turn on the electrical connection between the first graphics card and the first end of the display through the second control circuit when the first graphics card matches the display requirement of the display.

[0013] As an optional implementation, the control module comprises a controller and a NOT gate circuit. A first end of the controller is electrically connected to an input end of the NOT gate circuit, an output end of the NOT gate circuit is electrically connected to a control end of the first control circuit, and the first end of the controller is electrically connected to a control end of the second control circuit.

[0014] As an optional implementation, the NOT gate circuit comprises a first switch tube. A first end of the first switch tube is electrically connected to the first end of the controller, a second end of the first switch tube is electrically connected to the control end of the first control circuit, and the second end of the first switch tube is electrically connected to a power supply. A third end of the first switch tube is grounded. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a schematic diagram of a display device according to an embodiment of the present application.

[0016] Figure 2 FIG. 2 is a schematic diagram of a display device according to another embodiment of the present application.

[0017] Figure 3 FIG. 3 is a schematic diagram of a display device according to another embodiment of the present application.

[0018] Figure 4 FIG. 4 is a schematic diagram of a display device according to another embodiment of the present application.

[0019] Figure 5 FIG. 5 is a schematic diagram of a display device according to another embodiment of the present application.

[0020] Figure 6 FIG. 6 is a schematic diagram of a display device according to another embodiment of the present application.

[0021] Figure 7 FIG. 7 is a schematic diagram of a display device according to another embodiment of the present application.

[0022] Figure 8 FIG. 8 is a circuit schematic diagram of a display device according to another embodiment of the present application. DETAILED DESCRIPTION

[0023] The technical solutions of the present application are described in detail below with reference to the drawings and embodiments.

[0024] In the embodiments of the present application, the terms "first", "second", and the like are used only to distinguish different objects, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order. For example, the first application, the second application, and the like are used to distinguish different applications, and are not used to describe the specific order of the applications. The features with "first", "second" can explicitly or implicitly include one or more of the features.

[0025] In practical application, different displays have different display capabilities, so that different displays need to be matched with corresponding control devices for control. When the existing control device cannot meet the display requirements of the display, the user needs to remove the current control device and connect the display with the corresponding control device to meet the display requirements of the display, but the operation method is cumbersome and is prone to misconnection.

[0026] Therefore, the application provides a driving circuit and a display device, which can solve the problem of cumbersome operation and misconnection when replacing the control device in the display. The application can simplify the switching complexity of the control device in the display and reduce the risk of misconnection between the control device and the display.

[0027] Please refer to Figure 1 , a schematic diagram of a display device provided by an embodiment of the application. The display device includes a display 100 and a driving circuit 200.

[0028] The driving circuit 200 includes a control module 10, a first control circuit 20, a second control circuit 30, a first graphics card 40 and a second graphics card 50. Specifically, the first control circuit 20 is electrically connected between the first end of the display 100 and the second graphics card 50, the second control circuit 30 is electrically connected between the first graphics card 40 and the first end of the display 100, the first end of the control module 10 is electrically connected to the control end of the first control circuit 20, that is, the first end of the control module 10 outputs a signal to the control end of the first control circuit 20, which can control the conduction or turn-off of the first control circuit 20. And the second end of the control module 10 is electrically connected to the control end of the second control circuit 30, that is, the second end of the control module 10 outputs a signal to the control end of the second control circuit 30, which can control the conduction or turn-off of the second control circuit 30.

[0029] In practical application, as shown in Figure 1 , the first graphics card 40 can be an integrated graphics card, and the second graphics card 50 can be a separate graphics card, but in practical application, it is not limited to this, but can be determined according to the specific application environment, which is within the protection scope of the application.

[0030] The control module 10 is configured to: output a high-level signal to the control end of the first control circuit 20 to control the first control circuit 20 to turn on the electrical connection between the first end of the display 100 and the second graphics card 50, and output a low-level signal to the control end of the second control circuit 30 to control the second control circuit 30 to turn off the electrical connection between the first graphics card 40 and the first end of the display 100, so that the second graphics card 50 can control the display 100 when the second graphics card 50 matches the display requirements of the display 100; output a high-level signal to the control end of the second control circuit 30 to control the second control circuit 30 to turn on the electrical connection between the first graphics card 40 and the first end of the display 100, and output a low-level signal to the control end of the first control circuit 20 to control the first control circuit 20 to turn off the electrical connection between the first end of the display 100 and the second graphics card 50, so that the first graphics card 40 can control the display 100 when the first graphics card 40 matches the display requirements of the display 100.

[0031] Specifically, the high-level signal corresponds to the first signal output by the control module 10, and the low-level signal corresponds to the second signal output by the control module 10. The voltage value of the first signal is greater than the voltage value of the second signal. The voltage values of the first signal and the second signal are not limited here and can be determined according to the actual application environment, which are within the scope of the present application.

[0032] Optionally, the display capability of the display 100 can be resolution. Specifically, the resolution of the display 100 can be any one of 1080P, 8K and 4K.

[0033] In the present application, when the second graphics card 50 matches the display requirements of the display 100, the control module 10 outputs the first signal to the control end of the first control circuit 20 to control the first control circuit 20 to turn on the electrical connection between the first end of the display 100 and the second graphics card 50, or when the first graphics card 40 matches the display requirements of the display 100, the control module 10 outputs the second signal to the control end of the second control circuit 30 to control the second control circuit 30 to turn on the electrical connection between the first graphics card 40 and the first end of the display 100. So that the user can connect the display 100 with the corresponding control device without disassembling the control device, which simplifies the switching complexity of the control device in the display 100 and reduces the risk of misconnection between the control device and the display 100.

[0034] Please refer to Figure 2 The display device schematic diagram provided by another embodiment of the present application. The first end of the controller UV42 is electrically connected to the input end of the NAND circuit 12, the output end of the NAND circuit 12 is electrically connected to the control end of the first control circuit 20, and the first end of the controller UV42 is electrically connected to the control end of the second control circuit 30.

[0035] When the first end of the controller UV42 outputs a high level signal, the second control circuit 30 turns on the electrical connection between the first video card 40 and the first end of the display 100, and the NOT gate circuit 12 outputs a low level signal to the first control circuit 20, and the first control circuit 20 turns off the electrical connection between the first end of the display 100 and the second video card 50, so that the first video card 40 can control the display 100; when the first end of the controller UV42 outputs a low level signal, the second control circuit 30 turns off the electrical connection between the first video card 40 and the first end of the display 100, and the NOT gate circuit 12 outputs a high level signal to the first control circuit 20, and the first control circuit 20 turns on the electrical connection between the first end of the display 100 and the second video card 50, so that the second video card 50 can control the display 100.

[0036] In the embodiment, the first end of the controller UV42 is connected to the control end of the second control circuit 30, and the first end of the controller UV42 is electrically connected to the control end of the first control circuit 20 through the NOT gate circuit 12, so that the controller UV42 can control the first control circuit 20 and the second control circuit 30 through the first end only, thereby reducing the number of pins used by the controller UV42 and reducing the power consumption and electromagnetic interference of the controller UV42.

[0037] Please refer to Figure 3 In an optional embodiment, the NOT gate circuit 12 includes a first switch tube QV108. The first end of the first switch tube QV108 is electrically connected to the first end of the controller UV42, the second end of the first switch tube QV108 is electrically connected to the control end of the first control circuit 20, and the second end of the first switch tube QV108 is electrically connected to the power supply +1P8VS, and the third end of the first switch tube QV108 is grounded.

[0038] Optionally, the first switch tube QV108 is an NPN type triode, and the first end, the second end and the third end of the first switch tube QV108 correspond to the base, the collector and the emitter of the NPN type triode respectively. In actual application, it is not limited to this, but can be determined according to the specific application environment, which is within the protection scope of the present application.

[0039] In the application, the first switch tube QV108 is used to turn on the electrical connection between the power supply +1P8VS and the ground when the controller UV42 outputs a high level signal, so as to pull down the voltage at the first end of the first switch tube QV108, and then output a low level signal to the control end of the first control circuit 20, so as to turn off the electrical connection between the first end of the display 100 and the second display card 50 through the first control circuit 20. And when the controller UV42 outputs a low level signal, the electrical connection between the power supply +1P8VS and the ground is turned off, so as to output a high level signal to the control end of the first control circuit 20 through the power supply +1P8VS, and then turn on the electrical connection between the first end of the display 100 and the second display card 50 through the first control circuit 20. So that the controller UV42 can control the first control circuit 20 and the second control circuit 30 through the first end only, which reduces the number of pins used by the controller UV42, and reduces the power consumption and electromagnetic interference of the controller UV42.

[0040] Please refer to Figure 4 In an optional embodiment, the NOT gate circuit 12 further comprises a first resistor RV169 and a second resistor RV128. One end of the first resistor RV169 is electrically connected to the connection point between the first end of the first switch tube QV108 and the first end of the controller UV42, and the other end of the first resistor RV169 is grounded. The first resistor RV169 is used to limit the current size in the first signal when the first signal of the controller UV42 is input to the first switch tube QV108, so as to prevent the first switch tube QV108 from being damaged by excessive current in the first signal; one end of the second resistor RV128 is electrically connected to the power supply +1P8VS, the other end of the second resistor RV128 is electrically connected to the second end of the first switch tube QV108, and the other end of the second resistor RV128 is electrically connected to the control end of the first control circuit 20. The second resistor RV128 is used to limit the current size output by the power supply +1P8VS, so as to prevent the first switch tube QV108 or the first control circuit 20 from being damaged by excessive current output by the power supply +1P8VS.

[0041] Please refer to Figure 5 In an optional embodiment, the drive circuit 200 further comprises a third control circuit 60. Wherein, the first end of the third control circuit 60 is electrically connected to the first end of the display 100, the second end of the third control circuit 60 is electrically connected to the first control circuit 20 and the second control circuit 30, and the second end of the third control circuit 60 is electrically connected to the second end of the controller UV42, and the third end of the third control circuit 60 is electrically connected to the second end of the display 100.

[0042] In practical application, the third control circuit 60 can be Figure 8 the second switch tube (such as Figure 8The second switch tube can be an Insulated Gate Bipolar Transistor (IGBT). Specifically, the first end of the second switch tube is electrically connected to the first end of the display 100, the second end of the second switch tube is electrically connected to the first control circuit 20 and the second control circuit 30, the second end of the second switch tube is electrically connected to the second end of the controller UV42, and the third end of the second switch tube is electrically connected to the second end of the display 100. The first end, the second end, and the third end of the second switch tube correspond to the collector, the emitter, and the gate of the IGBT, respectively. In actual applications, this is not limited thereto, but can be determined according to specific application environments, and all fall within the scope of the present application.

[0043] When the display 100 is electrically connected to the drive circuit 200, the second end of the display 100 outputs an access signal to the third end of the second switch tube, i.e., the second end of the display 100 outputs a high-level signal to the third end of the second switch tube, to control the second switch tube to be turned on, thereby causing the first end of the display 100 to be electrically connected to the first control circuit 20 and the second control circuit 30. When the display 100 is not electrically connected to the drive circuit 200, the third end of the second switch tube is at a low level, at which time the second switch tube is turned off, thereby breaking the electrical connection between the first end of the display 100 and the first control circuit 20 and the second control circuit 30.

[0044] In actual applications, after the second switch tube is turned on, the second end of the controller UV42 obtains the display requirements of the display 100 through the third control circuit 60, to determine the corresponding control device according to the display requirements of the display 100. When the second graphics card 50 matches the display requirements of the display 100, the first end of the controller UV42 outputs a low-level signal to control the second control circuit 30 to turn off the electrical connection between the first graphics card 40 and the first end of the display 100, and the NOT gate circuit 12 outputs a high-level signal to the first control circuit 20 to control the first control circuit 20 to turn on the electrical connection between the first end of the display 100 and the second graphics card 50, so that the second graphics card 50 can control the display 100. When the first graphics card 40 matches the display requirements of the display 100, the first end of the controller UV42 outputs a high-level signal to control the second control circuit 30 to turn on the electrical connection between the first graphics card 40 and the first end of the display 100, and the NOT gate circuit 12 outputs a low-level signal to the first control circuit 20 to control the first control circuit 20 to turn off the electrical connection between the first end of the display 100 and the second graphics card 50, so that the first graphics card 40 can control the display 100.

[0045] The controller UV42 obtains the display requirement of the display 100 through the third control circuit 60 when the display 100 is connected to the driving circuit 200, and then controls the corresponding control device to be connected to the display 100 according to the display requirement of the display 100, so as to control the display 100 and meet the display requirement of the display 100.

[0046] Please refer to Figure 6 In an optional embodiment, the third end of the controller UV42 is electrically connected to the first graphic card 40, and the controller UV42 is configured to control the working state of the first graphic card 40.

[0047] In actual application, in the initial state, the first end of the controller UV42 outputs a low-level signal, the second control circuit 30 turns off the electrical connection between the first graphic card 40 and the third control circuit 60, and the NOT gate circuit 12 outputs a high-level signal to the first control circuit 20, so as to turn on the electrical connection between the second graphic card 50 and the third control circuit 60 through the first control circuit 20, and then turn on the electrical connection between the second graphic card 50 and the display 100, at this time, the controller UV42 outputs the corresponding enable signal to the first graphic card 40, that is, the controller UV42 outputs a low-level signal to the first graphic card 40, so as to control the first graphic card 40 to be in the standby state, thereby avoiding the increase of the power consumption of the display device caused by the working of the first graphic card 40. When the display requirement of the first graphic card 40 matches the display requirement of the display 100, the first end of the controller UV42 outputs a high-level signal, so as to control the second control circuit 30 to turn on the electrical connection between the first graphic card 40 and the third control circuit 60, and then turn on the electrical connection between the first graphic card 40 and the display 100, and the NOT gate circuit 12 outputs a low-level signal to the first control circuit 20, so as to control the first control circuit 20 to turn off the electrical connection between the second graphic card 50 and the third control circuit 60, and then turn off the electrical connection between the display 100 and the second graphic card 50, so that the first graphic card 40 can control the display 100.

[0048] Please refer to Figure 7 In an optional embodiment, the fourth end of the controller UV42 is electrically connected to the second end of the display 100. The controller UV42 is configured to receive the enable signal, that is, the high-level signal, output by the second end of the display 100 when the display 100 is connected to the driving circuit 200, so as to output a high-level signal to the controller UV42 when the display 100 is connected to the driving circuit 200, so as to control the controller UV42 to work, thereby avoiding the waste of electric energy caused by the continuous working of the controller UV42.

[0049] Please refer to Figure 8 In an optional embodiment, the first control circuit 20 and the second control circuit 30 are both switching tubes. Specifically, the first control circuit 20 includes a third switching tube (such as a transistor), the second control circuit 30 includes a fourth switching tube (such as a transistor), and the third switching tube and the fourth switching tube are connected in series between the first graphic card 40 and the third control circuit 60. Figure 8The second control circuit 30 (as shown in QV37A and QV37B) includes a fourth switching transistor (such as...). Figure 8 (as shown in QV114A and QV114B) and a third resistor (such as Figure 8 (RV30 and RV31 shown). The first terminal of the third switch is electrically connected to the second terminal of the second switch, the second terminal of the third switch is electrically connected to the second graphics card 50, and the third terminal of the third switch is electrically connected to the output terminal of the NOT gate circuit 12. The first terminal of the fourth switch is electrically connected to one end of the third resistor, the other end of the third resistor is electrically connected to the second terminal of the second switch, the second terminal of the fourth switch is electrically connected to the first graphics card 40, and the third terminal of the fourth switch is electrically connected to the first terminal of the controller UV42. The third resistor is used to limit the current between the first graphics card 40 and the display 100 when the third switch is turned on, to prevent excessive current from damaging the first graphics card 40 or the display 100. Specifically, the first, second, and third terminals of the third switch and the first, second, and third terminals of the fourth switch correspond to the collector, emitter, and gate of the IGBT, respectively. In practical applications, this is not the only possibility; the specific application environment can be considered, and all are within the scope of this application.

[0050] In one alternative implementation, the second terminal of the second switch is connected to the fourth resistor (e.g., Figure 8 One end of RV33 and RV32 shown is electrically connected, and the other end of the fourth resistor is electrically connected to the second end of the controller UV42. The fourth resistor is used to limit the current between the controller UV42 and the display 100 when the second switch is turned on, so as to prevent the excessive current between the controller UV42 and the display 100 from damaging the controller UV42 or the display 100.

[0051] In one alternative implementation, the fourth terminal of the controller UV42 is connected to the fifth resistor (e.g., Figure 8 One end of the fifth resistor RV9 (shown in the diagram) is electrically connected, and the other end of the fifth resistor RV9 is electrically connected to the second terminal of the display 100. The fifth resistor RV9 is used to limit the current of the access signal when the display 100 outputs an access signal to the controller UV42, so as to prevent the controller UV42 from being damaged by excessive current. The fifth terminal of the controller UV42 is connected to the sixth resistor (such as...). Figure 8 One end of the RV34 shown is electrically connected, and the other end of the sixth resistor RV34 is used to receive the operating power supply +1P8VALW of the controller UV42. The sixth terminal of the controller UV42 is grounded. The sixth resistor RV34 is used to limit the current of the operating power supply +1P8VALW to prevent the controller UV42 from being damaged by excessive current.

[0052] Optionally, in actual application, the control module 10, the first control circuit 20, the second control circuit 30, the third control circuit 60, the first display card 40, the second display card 50 and the display 100 can be connected in communication by the I2C (Inter-Integrated Circuit, I2C) mode. Specifically, the second control circuit 30 (such as QV114A and RV30 shown in Figure 8 ) and the third control circuit 60 (such as QV38A shown in Figure 8 ) are arranged on the serial data line (Serial Data Line, SDA) between the first display card 40 and the display 100, and the second control circuit 30 (such as QV114B and RV31 shown in Figure 8 ) and the third control circuit 60 (such as QV38B shown in Figure 8 ) are arranged on the serial clock line (Serial Clock Line, SCL) between the first display card 40 and the display 100. The first control circuit 20 (such as QV37B shown in Figure 8 ) and the third control circuit 60 (such as QV38A shown in Figure 8 ) are arranged on the SDA line between the second display card 50 and the display 100, and the first control circuit 20 (such as QV37A shown in Figure 8 ) and the third control circuit 60 (such as QV38B shown in Figure 8 ) are arranged on the SCL line between the second display card 50 and the display 100.

[0053] In summary, when the display requirements of the second display card 50 and the display 100 match, the control module 10 outputs the first signal to the control end of the first control circuit 20 to control the first control circuit 20 to turn on the electrical connection between the first end of the display 100 and the second display card 50, or when the display requirements of the first display card 40 and the display 100 match, the control module 10 outputs the second signal to the control end of the second control circuit 30 to control the second control circuit 30 to turn on the electrical connection between the first end of the display 100 and the first display card 40. So that the user can connect the display 100 with the corresponding control device without disassembling the control device, which simplifies the switching complexity of the control device in the display 100 and reduces the risk of misconnection between the control device and the display 100.

[0054] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, any appropriate changes and modifications made to the above embodiments within the spirit and scope of the present application should fall within the scope of the present application.

Claims

1. A drive circuit characterized by comprising: The driving circuit comprises a control module, a first control circuit, a second control circuit, a first display card and a second display card; The first control circuit is electrically connected between the first end of the display and the second display card, the second control circuit is electrically connected between the first display card and the first end of the display, the first end of the control module is electrically connected with the control end of the first control circuit, and the second end of the control module is electrically connected with the control end of the second control circuit; The control module is configured to: When the second display card matches the display requirement of the display, output a first signal to the first control circuit to turn on the electrical connection between the first end of the display and the second display card through the first control circuit; When the first display card matches the display requirement of the display, output a second signal to the second control circuit to turn on the electrical connection between the first display card and the first end of the display through the second control circuit.

2. The drive circuit according to claim 1, characterized in that, The control module comprises a controller and a NOT gate circuit; The first end of the controller is electrically connected with the input end of the NOT gate circuit, the output end of the NOT gate circuit is electrically connected with the control end of the first control circuit, and the first end of the controller is electrically connected with the control end of the second control circuit.

3. The drive circuit according to claim 2, characterized in that, The NOT gate circuit comprises a first switch tube; The first end of the first switch tube is electrically connected with the first end of the controller, the second end of the first switch tube is electrically connected with the control end of the first control circuit, and the second end of the first switch tube is electrically connected with a power supply, and the third end of the first switch tube is grounded.

4. The drive circuit according to claim 3, characterized in that, The NOT gate circuit further comprises a first resistor and a second resistor; One end of the first resistor is electrically connected with a connection point between the first end of the first switch tube and the first end of the controller, and the other end of the first resistor is grounded; One end of the second resistor is electrically connected with the power supply, the other end of the second resistor is electrically connected with the second end of the first switch tube, and the other end of the second resistor is electrically connected with the control end of the first control circuit.

5. The drive circuit according to claim 2, characterized by The driving circuit further comprises a third control circuit; The first end of the third control circuit is electrically connected with the first end of the display, the second end of the third control circuit is electrically connected with the first control circuit and the second control circuit, and the second end of the third control circuit is electrically connected with the second end of the controller, and the third end of the third control circuit is electrically connected with the second end of the display.

6. The drive circuit according to claim 5, characterized in that, The third end of the controller is electrically connected with the first display card.

7. The drive circuit according to claim 5, characterized by The fourth end of the controller is electrically connected with the second end of the display.

8. A display device, characterized by The display and the driving circuit are provided. The driving circuit comprises a control module, a first control circuit, a second control circuit, a first display card and a second display card; The first control circuit is electrically connected between the first end of the display and the second display card, the second control circuit is electrically connected between the first display card and the first end of the display, the first end of the control module is electrically connected with the control end of the first control circuit, and the second end of the control module is electrically connected with the control end of the second control circuit; The control module is configured to: When the second display card matches the display requirement of the display, output a first signal to the control end of the first control circuit to turn on the electrical connection between the first end of the display and the second display card through the first control circuit; When the first display card matches the display requirement of the display, output a second signal to the control end of the second control circuit to turn on the electrical connection between the first display card and the first end of the display through the second control circuit.

9. The display device of claim 8, wherein, The control module comprises a controller and a NOT gate circuit; The first end of the controller is electrically connected with the input end of the NOT gate circuit, the output end of the NOT gate circuit is electrically connected with the control end of the first control circuit, and the first end of the controller is electrically connected with the control end of the second control circuit.

10. The display device of claim 9, wherein, The NOT gate circuit comprises a first switch tube; The first end of the first switch tube is electrically connected with the first end of the controller, the second end of the first switch tube is electrically connected with the control end of the first control circuit, the second end of the first switch tube is electrically connected with a power supply, and the third end of the first switch tube is grounded.

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