Drive main board and display device

Abstract

The application discloses a driving mainboard and a display device, and relates to the technical field of display, wherein the driving mainboard comprises a processor, a power supply module, a first voltage conversion module, a second voltage conversion module and a connecting interface; the power supply module is connected with the processor and provides working voltage for the processor; the first voltage conversion module is connected with the power supply module, and the power supply module provides first voltage for the first voltage conversion module; the second voltage conversion module is connected with the power supply module, and the power supply module provides second voltage for the second voltage conversion module; the connecting structure is connected with a lamp plate of the display device, and the driving mainboard transmits signals to the lamp plate through the connecting structure; the application sets the connecting structure on the driving mainboard, so that the driving mainboard is directly connected with the lamp plate, the required time of backlight response is shortened, and the problem of picture display and backlight delay is solved.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a driver motherboard and a display device. Background Technology

[0002] To achieve higher contrast and HDR1000 / HDR1400 display effects, display products require a multi-zone backlight design. Dark areas use reduced backlight current, while bright areas utilize HDR data to meet high brightness requirements. However, a drawback is the asynchrony between the backlight and the screen display (LCD), resulting in backlight delay. This delay is typically around 3ms. For example, in a completely black screen, if the mouse is moved quickly, the backlight's illumination speed cannot keep up, resulting in a noticeable ghosting effect, negatively impacting the viewing experience. Therefore, resolving this backlight delay has become a pressing issue. Currently, this delay is usually caused by the driver motherboard sending a frame's brightness information to the backlight driver via the SPI protocol. The backlight response time from the screen to the backlight illuminating is the Vsync start bit + SPI data transmission time + the backlight driver's data reception and display time, resulting in a longer response time and causing the backlight delay. Utility Model Content

[0003] The purpose of this application is to provide a driver motherboard and a display device. By setting a connection structure on the driver motherboard, the driver motherboard can be directly connected to the lamp board, thereby shortening the backlight response time and solving the problem of screen display and backlight delay.

[0004] This application discloses a driver motherboard applied to a display device. The driver motherboard includes a processor, a power supply module, a first voltage conversion module, a second voltage conversion module, and a connection interface. The power supply module is connected to the processor and provides the processor with an operating voltage. The first voltage conversion module is connected to the power supply module, and the power supply module provides the first voltage conversion module with a first voltage. The second voltage conversion module is connected to the power supply module, and the power supply module provides the second voltage conversion module with a second voltage. The connection structure is connected to the lamp board of the display device, and the driver motherboard transmits signals to the lamp board through the connection structure.

[0005] Optionally, the driver motherboard further includes an NC power module, which is connected to the power supply module and supplies power to the NC power module. The NC power module is also connected to the lamp board and provides power to the lamp board.

[0006] Optionally, the connection structure includes a 60-pin connector socket, and the driver motherboard is also provided with an SPI interface. The SPI interface is provided in at least two locations, and the two SPI data interfaces are set on the 60-pin connector socket.

[0007] Optionally, the first voltage conversion module includes a first power input terminal, a first controller, a first inductor, and a first power output terminal. The first power input terminal receives the first voltage output by the power supply module. The first power input terminal is connected to the first input terminal of the first controller, the first output terminal of the first controller is connected to the input terminal of the first inductor, and the output terminal of the first inductor is connected to the first power output terminal. The first voltage output by the power supply module enters the first voltage conversion module through the first power input terminal, then enters the first controller through the first input terminal of the first controller. The first controller converts the first voltage, and the converted first voltage enters the input terminal of the first inductor through the first output terminal of the first controller, and is then input to the first power output terminal from the output terminal of the first inductor.

[0008] Optionally, the second voltage conversion module includes a second power input terminal, a second controller, a second inductor, and a second power output terminal. The second power input terminal receives the second voltage output by the power supply module. The second power input terminal is connected to the first input terminal of the second controller, the first output terminal of the second controller is connected to the input terminal of the second inductor, and the output terminal of the second inductor is connected to the second power output terminal. The second voltage output by the power supply module enters the second voltage conversion module through the second power input terminal, then enters the second controller through the first input terminal of the second controller. The second controller converts the second voltage, and the converted second voltage enters the input terminal of the second inductor through the first output terminal of the second controller, and is then input to the second power output terminal from the output terminal of the second inductor.

[0009] Optionally, the second voltage conversion module further includes a feedback module, which includes a PWM signal input terminal, a first filter resistor, a first filter capacitor, a third controller, and a first feedback output terminal. The first feedback output terminal is connected between the output terminal of the second inductor and the second power supply output terminal. The PWM signal input terminal is connected to the processor. The input terminal of the first filter resistor is connected to the PWM signal input terminal. The output terminal of the first filter resistor is connected to the input terminal of the third controller. The input terminal of the first filter capacitor is connected between the output terminal of the first filter resistor and the input terminal of the third controller. The output terminal of the first filter capacitor is grounded. The output terminal of the third controller is connected to the first feedback output terminal.

[0010] Optionally, the second voltage conversion module further includes a third inductor and a fourth inductor. One end of the third inductor is connected to the second power input terminal, and the other end of the third inductor is connected to the second power output terminal. One end of the fourth inductor is connected to the second power input terminal, and the other end of the fourth inductor is connected to the second power output terminal. The third inductor and the fourth inductor are connected in parallel.

[0011] Optionally, the SPI interface includes an SPI-SDI interface and an SPI-SDO interface.

[0012] Optionally, the driver motherboard further includes a first video interface and a second video interface, wherein the first video interface is an HDMI interface and the second video interface is a DP interface.

[0013] This application also discloses a display device, including a display module, a backlight module, and a driving motherboard as described in any of the above, wherein the driving motherboard drives the display module and the backlight module.

[0014] This application designs a connection structure on the driver motherboard that directly connects to the lamp board of the display device. This allows signals generated by the driver motherboard to be directly transmitted to the lamp board of the display device through the newly added connection structure, eliminating the need to transmit to the original MCU unit before being sent to the lamp board. This enables direct driving using the driver motherboard. Data that was originally processed by the MCU unit is now processed by the processor of the driver motherboard. Furthermore, the driver motherboard can know the transmission time of the V-Sync signal and calculate the liquid crystal flip time based on this transmission time. At that time, the backlight is turned on simultaneously, resulting in a backlight delay of 1ms or less, thus solving the problem of screen display and backlight delay. Attached Figure Description

[0015] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings: Figure 1 This is a schematic diagram of the structure of a driver motherboard according to the first embodiment of this application; Figure 2 This is a schematic diagram of the structure of a driver motherboard according to a second embodiment of this application; Figure 3 This is a schematic diagram of the circuit structure of the first voltage conversion module in the driver motherboard of the second embodiment of this application; Figure 4This is a schematic diagram of the circuit structure of the second voltage conversion module in the driver motherboard of the second embodiment of this application; Figure 5 This is a schematic diagram of the circuit structure of the feedback module in the driver motherboard according to the second embodiment of this application; Figure 6 This is a schematic diagram of the circuit structure of the second voltage conversion module in the driver motherboard according to the third embodiment of this application; Figure 7 This is a schematic diagram of the structure of a display device according to the fourth embodiment of this application.

[0016] Among them, 100 is the driver motherboard; 110 is the processor; 120 is the power supply module; 130 is the first voltage conversion module; 140 is the second voltage conversion module; 150 is the connection structure; 160 is the NC power supply module; 170 is the feedback module; the first power input terminal Vin1; the first controller UP1; the first inductor LP1; the first power output terminal Vout1; the second power input terminal Vin2; the second controller UP2; the second inductor LP2; the second power output terminal Vout2; the PWM signal input terminal LD_PWM; the first filter resistor R1; the first filter capacitor C1; the third controller UP3; the first feedback output terminal FB_BK_1; the third inductor LP3; the fourth inductor LP4; 200 is the display module; 300 is the backlight module; and 400 is the display device. Detailed Implementation

[0017] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0018] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or implying the number of technical features indicated. Therefore, unless otherwise stated, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; "multiple" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, where one or more other features, integers, steps, operations, units, components, and / or combinations thereof may be present or added.

[0019] In addition, terms such as “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” that indicate orientation or positional relationship are based on the orientation or relative positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this application and do not indicate that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] like Figure 1 As shown, as a first embodiment of this application, a driver motherboard 100 is disclosed. The driver motherboard 100 is applied to a display device. The driver motherboard 100 includes a processor 110, a power supply module 120, a first voltage conversion module 130, a second voltage conversion module 140, and a connection structure 150. The power supply module 120 is connected to the processor 110 to provide the processor 110 with an operating voltage. The first voltage conversion module 130 is connected to the power supply module 120 and provides a first voltage to the first voltage conversion module 130. The second voltage conversion module 140 is connected to the power supply module 120 and provides a second voltage to the second voltage conversion module 140. The connection structure 150 is connected to the lamp board of the display device to transmit the signal generated by the driver motherboard 100 to the lamp board of the display device. It can be understood that the lamp board of the display device is the lamp board in the backlight module, and the lamp board is provided with LEDs and a driver chip for the lamp board. In this embodiment, the first voltage conversion module 130 converts the first voltage to supply the LEDs of the lamp board, the second voltage conversion module 140 converts the second voltage to supply the driver chip of the lamp board, and the connection structure 150 transmits the signal generated by the processor 110 of the driving motherboard 100 and the voltage signal generated by the first voltage conversion module 130 and the second voltage conversion module 140 to the lamp board.

[0023] In this application, by designing a connection structure 150 on the driver motherboard 100, the connection structure 150 is directly connected to the lamp board of the display device. This allows the signals generated by the driver motherboard 100 to be directly transmitted to the lamp board of the display device through the newly added connection structure 150, without needing to be transmitted to the original MCU unit and then to the lamp board of the display device. This enables direct driving using the driver motherboard 100. The data originally processed by the MCU unit is now processed by the processor 110 of the driver motherboard 100. The driver motherboard 100 can know the transmission time of the V-Sync signal and calculate the liquid crystal flip time based on the transmission time. At that time, the backlight is turned on simultaneously, so that the backlight delay is 1ms or less, thus solving the problem of screen display and backlight delay. The power supply for the lamp beads and the power supply for the driver chip of the lamp board are directly provided by the driver motherboard 100. The first voltage conversion module 130 and the second voltage conversion module 140 of the driver motherboard 100 provide driving voltage for the driver chip and the lamp beads of the lamp board, respectively.

[0024] like Figure 2 As shown, as a second embodiment of this application, unlike the first embodiment described above, the driver motherboard 100 further includes an NC power module 160. The NC power module 160 is connected to the power supply module 120, and the power supply module 120 supplies power to the NC power module 160. The NC power module 160 is connected to the lamp board and provides power to the lamp board. By adding the NC power module 160 to the driver motherboard 100, the power module that originally supplied power to the lamp beads is transferred to the driver motherboard 100. Thus, the drive signals and voltage signals required by the lamp board are all output by the driver motherboard 100. The driver motherboard 100 transmits the corresponding drive signals and voltage signals to the lamp board through the connection structure 150. Compared with the original display device design, this saves one MCU and improves the backlight response time. Furthermore, setting the NC power module 160 on the driver motherboard 100 not only reduces the material cost of the driver motherboard 100 but also reduces the cost of surface mount technology (SMT) manufacturing. It should be noted that when the voltage provided by the power supply module 120 is the same as the voltage required by the LEDs of the lamp board, the power supply module 120 directly supplies power to the LEDs of the lamp board through the NC power supply module 160. However, if the voltage provided by the power supply module 120 is different from the voltage required by the LEDs of the lamp board, the first voltage output by the power supply module 120 is converted by the second voltage conversion module 140 before being supplied to the LEDs of the lamp board.

[0025] In this embodiment, the connection structure 150 includes a 60-pin connector socket, and the driver motherboard 100 is also provided with an SPI interface. The SPI interface is used to set SPI lines and connect to the lamp board through the SPI lines. There are at least two SPI interfaces, both of which are set on the 60-pin connector socket and connected to the lamp board of the display device through the 60-pin connector socket. The driver motherboard 100 provides the driver chip of the lamp board with local dimming or Black Frame Insertion (BFI) functions for controlling the lamp board through the two SPI interfaces. A connector is provided on the lamp board, and the connector matches the 60-pin connector socket. The lamp board receives drive signals and voltage signals sent by the driver motherboard 100 through the connector. It should be noted that the SPI interface includes an SPI-SDI interface and an SPI-SDO interface. The design of the SPI-SDI interface and the SPI-SDO interface is to process the quality of the transmitted signal before the connector signal is transmitted, reducing signal noise and overshoot.

[0026] like Figure 2 and Figure 3 As shown, the first voltage conversion module 130 is used to provide converted voltage to the driver chip of the lamp board. The first voltage conversion module 130 includes a first power input terminal Vin1, a first controller UP1, a first inductor LP1 and a first power output terminal Vout1. The first power input terminal Vin1 receives the first voltage output by the power supply module 120. The first power input terminal Vin1 is connected to the first input terminal Vin of the first controller UP1. The first output terminal LX of the first controller UP1 is connected to the input terminal of the first inductor LP1. The output terminal of the first inductor LP1 is connected to the first power output terminal Vout1. When the first voltage conversion module 130 is working, the power supply module 120 outputs a first voltage, which enters the first voltage conversion module 130 through the first power input terminal Vin1, and then enters the first controller UP1 through the first input terminal Vin of the first controller UP1. The first controller UP1 converts the first voltage, and the converted first voltage enters the input terminal of the first inductor LP1 through the first output terminal LX of the first controller UP1. After the voltage signal is filtered by the first inductor LP1, it is input to the first power output terminal Vout1 through the output terminal of the first inductor LP1, and then output to the driver chip of the lamp board through the first power output terminal Vout1 to provide driving voltage for the driver chip of the lamp board to work. The first voltage output by the power supply module 120 can be 2.7 to 6V, while the driving voltage output by the first power output terminal Vout1 is about 3.5V.

[0027] It should be noted that the first controller also includes an enable signal input terminal EN and a feedback signal input terminal FB. The enable signal input terminal EN is used to receive the enable signal BKL_EN. The enable signal BKL_EN can be issued by the processor 110 of the drive motherboard 100 or by the timing controller (Tcon) of the display device. The feedback signal input terminal FB is used to receive the feedback signal. The feedback signal input terminal is connected between the output terminal of the first inductor LP1 and the first power output terminal Vout1 to receive the voltage signal output by the first inductor LP1 to the first power output terminal Vout1, and to perform feedback adjustment according to the voltage signal so that the first voltage after conversion by the first controller UP1 can meet the voltage level required for use.

[0028] like Figure 2 and Figure 4 As shown, the second voltage conversion module 140 is used to provide the converted voltage to the LEDs of the lamp board. The second voltage conversion module 140 includes a second power input terminal Vin2, a second controller UP2, a second inductor LP2, and a second power output terminal Vout2. The second power input terminal Vin2 receives the second voltage output by the power supply module 120. The second power input terminal Vin2 is connected to the first input terminal VIN of the second controller UP2. The first output terminal SW of the second controller UP2 is connected to the input terminal of the second inductor LP2. The output terminal of the second inductor LP2 is connected to the second power output terminal Vout2. When the second voltage conversion module 140 is in use, the power supply module 120 outputs a second voltage, which enters the second voltage conversion module 140 through the second power input terminal Vin2, and then enters the second controller UP2 through the first input terminal VIN of the second controller UP2. The second controller UP2 converts the second voltage, and the converted second voltage enters the input terminal of the second inductor LP2 through the first output terminal SW of the second controller UP2. After the voltage signal is filtered by the second inductor LP2, it is input to the second power output terminal Vout2 through the output terminal of the second inductor LP2, and then output to the lamp beads of the lamp board through the second power output terminal Vout2 to provide driving voltage for the lamp beads of the lamp board to work.

[0029] It should be noted that the second controller also includes an enable signal input terminal EN and a feedback signal input terminal FB. The enable signal input terminal EN is used to receive the enable signal BKL_EN, which can be issued by the processor 110 of the drive motherboard 100 or by the Tcon of the display device. The feedback signal input terminal FB is used to receive the feedback signal. The feedback signal input terminal FB is connected between the output terminal of the second inductor LP2 and the second power output terminal Vout2 to receive the voltage signal output by the second inductor LP2 to the second power output terminal Vout2, and to perform feedback adjustment based on the voltage signal so that the second voltage converted by the second controller UP2 can meet the usage requirements.

[0030] like Figure 4 and Figure 5As shown, the second voltage conversion module 140 also includes a feedback module 170. The feedback module 170 is disposed between the output terminal of the second inductor LP2 and the second power output terminal Vout2. The feedback module 170 includes a PWM signal input terminal LD_PWM, a first filter resistor R1, a first filter capacitor C1, a third controller UP3, and a first feedback output terminal FB_BK_1. The first feedback output terminal FB_BK_1 is connected between the output terminal of the second inductor LP2 and the second power output terminal Vout2. The PWM signal input terminal LD_PWM is connected to the processor 110 to receive the PWM signal output by the processor 110. The input terminal of the first filter resistor R1 is connected to the PWM signal input terminal LD_PWM. The output terminal of the first filter resistor R1 is connected to the input terminal IN of the third controller UP3. The input terminal of the first filter capacitor C1 is connected between the output terminal of the first filter resistor R1 and the input terminal IN of the third controller UP3. The output terminal of the first filter capacitor C1 is grounded. The output terminal OUT of the third controller UP3 is connected to the first feedback output terminal FB_BK_1. The first filter resistor R1 and the first filter capacitor C1 filter the PWM signal input from the PWM signal input terminal LD_PWM to obtain a DC voltage. This DC voltage is then input to the first feedback output terminal FB_BK_1 through the input terminal IN and the output terminal OUT of the third controller UP3. Finally, it is output to the second power output terminal Vout2 through the first feedback output terminal FB_BK_1, thereby adjusting the second voltage output from the second power output terminal Vout2. When the feedback module 170 is working, the processor 110 first receives the feedback signal output from the driver chip of the lamp board. The processor 110 adjusts the duty cycle of the output PWM signal according to the received feedback signal, and then outputs it to the PWM signal input terminal LD_PWM to enter the feedback module 170. The feedback module 170 filters the PWM signal to form a DC voltage, thereby adjusting the second voltage output from the second power output terminal Vout2.

[0031] Furthermore, in this embodiment, the driver motherboard 100 also includes a first video interface and a second video interface, wherein the first video interface is an HDMI interface and the second video interface is a DP interface.

[0032] like Figure 6As shown in the third embodiment of this application, a driver motherboard 100 is disclosed. The second voltage conversion module 140 further includes a third inductor LP3 and a fourth inductor LP4. One end of the third inductor LP3 is connected to the second power input terminal Vin2, and the other end of the third inductor LP3 is connected to the second power output terminal Vout2. One end of the fourth inductor LP4 is connected to the second power input terminal Vin2, and the other end of the fourth inductor LP4 is connected to the second power output terminal Vout2. The third inductor LP3 and the fourth inductor LP4 are connected in parallel. The second controller UP2 also includes an enable signal input terminal EN. When the second voltage output by the power supply module 120 meets the usage requirements, the second controller UP2 can be controlled to stop working by outputting the enable signal BKL_EN. The second voltage output by the power supply module 120 is directly filtered by the third inductor LP3 and the fourth inductor LP4, without passing through the second controller UP2, and is directly output to the second power output terminal Vout2 for use.

[0033] like Figure 7 As shown, as a fourth embodiment of this application, a display device 400 is disclosed. The display device 400 includes a display module 200, a backlight module 300, and a driving motherboard 100 as described in the above embodiment. The driving motherboard 100 drives the display module 200 and the backlight module 300. It should be noted that the backlight module 300 includes a lamp board. The display device 400 incorporates a connection structure 150 on its driver motherboard 100. This connection structure 150 directly connects to the lamp board of the display device 400, allowing signals generated by the driver motherboard 100 to be directly transmitted to the lamp board of the display device 400 via the newly added connection structure 150. This eliminates the need for transmission to the original MCU unit before reaching the lamp board, enabling direct drive by the driver motherboard 100. Data originally processed by the MCU unit is now processed by the processor 110 of the driver motherboard 100. Furthermore, the driver motherboard 100 can determine the V-Sync signal transmission time and calculate the liquid crystal flip time based on this time. Simultaneously, the backlight is activated, reducing the backlight delay to 1ms or less, thus resolving the issue of screen display and backlight delay.

[0034] It should be noted that the inventive concept of this application can form many embodiments, but due to the limited space of the application documents, they cannot all be listed. Therefore, without conflict, the embodiments described above or the technical features can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effect will be enhanced.

[0035] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A driver motherboard, used in a display device, characterized in that, The driver motherboard includes: processor; A power supply module, connected to the processor, provides the processor with operating voltage; A first voltage conversion module is connected to the power supply module, and the power supply module provides a first voltage to the first voltage conversion module. A second voltage conversion module is connected to the power supply module, and the power supply module provides a second voltage to the second voltage conversion module; and A connection structure is provided, which is connected to the lamp panel of the display device. The driver motherboard transmits signals to the lamp board through a connection structure.

2. The driver motherboard according to claim 1, characterized in that, It also includes an NC power module, which is connected to the power supply module and supplies power to the NC power module. The NC power module is also connected to the lamp board and provides power to the lamp board.

3. The driver motherboard according to claim 1, characterized in that, The connection structure includes a 60-pin connector socket, and the driver motherboard is also provided with an SPI interface. There are at least two SPI interfaces, and the two SPI data interfaces are set on the 60-pin connector socket.

4. The driver motherboard according to claim 1, characterized in that, The first voltage conversion module includes a first power input terminal, a first controller, a first inductor, and a first power output terminal. The first power input terminal receives the first voltage output by the power supply module. The first power input terminal is connected to the first input terminal of the first controller. The first output terminal of the first controller is connected to the input terminal of the first inductor. The output terminal of the first inductor is connected to the first power output terminal. The first voltage output by the power supply module enters the first voltage conversion module through the first power input terminal, and then enters the first controller through the first input terminal of the first controller. The first controller converts the first voltage, and the converted first voltage enters the input terminal of the first inductor through the first output terminal of the first controller, and is then input to the first power output terminal from the output terminal of the first inductor.

5. The driver motherboard according to claim 1, characterized in that, The second voltage conversion module includes a second power input terminal, a second controller, a second inductor, and a second power output terminal. The second power input terminal receives the second voltage output by the power supply module. The second power input terminal is connected to the first input terminal of the second controller. The first output terminal of the second controller is connected to the input terminal of the second inductor. The output terminal of the second inductor is connected to the second power output terminal. The second voltage output by the power supply module enters the second voltage conversion module through the second power input terminal, and then enters the second controller through the first input terminal of the second controller. The second controller converts the second voltage, and the converted second voltage enters the input terminal of the second inductor through the first output terminal of the second controller, and is then input to the second power output terminal from the output terminal of the second inductor.

6. The driver motherboard according to claim 5, characterized in that, The second voltage conversion module further includes a feedback module, which includes a PWM signal input terminal, a first filter resistor, a first filter capacitor, a third controller, and a first feedback output terminal. The first feedback output terminal is connected between the output terminal of the second inductor and the second power supply output terminal. The PWM signal input terminal is connected to the processor. The input terminal of the first filter resistor is connected to the PWM signal input terminal. The output terminal of the first filter resistor is connected to the input terminal of the third controller. The input terminal of the first filter capacitor is connected between the output terminal of the first filter resistor and the input terminal of the third controller. The output terminal of the first filter capacitor is grounded. The output terminal of the third controller is connected to the first feedback output terminal.

7. The driver motherboard according to claim 5, characterized in that, The second voltage conversion module further includes a third inductor and a fourth inductor. One end of the third inductor is connected to the second power input terminal, and the other end of the third inductor is connected to the second power output terminal. One end of the fourth inductor is connected to the second power input terminal, and the other end of the fourth inductor is connected to the second power output terminal. The third inductor and the fourth inductor are connected in parallel.

8. The driver motherboard according to claim 3, characterized in that, The SPI interface includes the SPI-SDI interface and the SPI-SDO interface.

9. The driver motherboard according to claim 1, characterized in that, It also includes a first video interface and a second video interface, the first video interface being an HDMI interface and the second video interface being a DP interface.

10. A display device, characterized in that, It includes a display module, a backlight module, and a driver motherboard as described in any one of claims 1 to 9, wherein the driver motherboard drives the display module and the backlight module.

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