Multifunctional 27mini LED display mainboard

Abstract

The utility model relates to the technical field of electronic equipment, and discloses a multifunctional 27mini LED display mainboard which comprises a bridging module and an integrated module, one end of the bridging module is used for being connected with external equipment, and the other end of the bridging module is used for being connected with connecting equipment. The bridging module is used for expanding a connecting port of the mini LED display comprising the multifunctional 27mini LED display mainboard; the integrated module comprises an IC integrated chip, one end of the IC integrated chip is used for being connected with the external equipment, the other end of the IC integrated chip is used for being connected with the bridging module, and the IC integrated chip is used for processing audio and video signals transmitted by the external equipment and supporting operation of various connecting equipment. The multifunctional 27mini LED display mainboard disclosed by the utility model has stronger processing capacity, can support the operation of various connecting devices, and greatly improves the compatibility of the mini LED display mainboard.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic devices, in particular to a main board of a multifunctional 27mini LED display. Background Art

[0002] The LED-backlit liquid crystal display is a commonly used liquid crystal display at present, and its backlight source uses LEDs (light-emitting diodes) instead of the traditional cold cathode fluorescent lamp (CCFL). The LED backlight can provide more uniform and bright illumination, and is also more energy-efficient. Among them, the mini LED display is a new type of display, which has more backlight sources, can achieve more precise local dimming, has higher contrast and higher brightness, and has richer light and dark details in the picture, and the display effect has a qualitative leap compared with the traditional LED. The mini LED display has more backlight sources, which can not only achieve higher color performance, but also achieve higher contrast and deeper black, while reducing gray-scale distortion.

[0003] At present, the main board configured for the mini LED display has poor processing ability and few expandable interfaces, resulting in low motherboard compatibility. Its processing ability cannot support the operation of a variety of other devices (such as external touch screens or camera devices), and it is difficult to meet the current diverse scenario requirements.

[0004] Therefore, in order to solve the above problems, the utility model provides a main board of a multifunctional 27mini LED display with strong processing ability and high compatibility. Summary of the Utility Model

[0005] The utility model provides a main board of a multifunctional 27mini LED display, aiming to solve the problem of poor compatibility of the existing main board of the mini LED display.

[0006] In order to solve the above technical problems, the utility model provides a main board of a multifunctional 27mini LED display, which includes: a bridging module, one end of which is used to connect to an external device, and the other end is used to connect to a connected device. The bridging module is used to expand the connection ports of the mini LED display including the main board of the multifunctional 27mini LED display; an integration module, which includes an IC integration chip. One end of the IC integration chip is used to connect to the external device, and the other end is used to connect to the bridging module. The IC chip is used to process the audio and video signals transmitted by the external device and support the operation of a variety of the connected devices.

[0007] Further, the IC integrated chip is an MT9800GWPT / DG chip. The MT9800GWPT / DG chip includes a DP signal input pin and a V-BY-ONE signal output pin. Among them, the DP signal input pin is used to receive the audio-visual signal, and the V-BY-ONE signal output pin is used to transmit images and / or video signals to the display panel of the mini LED display.

[0008] Further, the integrated module further includes a DP interface module. One end of the DP interface module is used to connect to the external device, and the other end is connected to the DP signal input pin.

[0009] Further, the bridging module includes a TYPEC interface module, a GL3523-S chip, and a GL850G chip. One end of the TYPEC interface module is used to connect to the external device, and the other end is connected to one end of the GL3523-S chip; the other end of the GL3523-S chip is connected to one end of the GL850 chip, and the other end of the GL850 chip is used to connect to the connected device.

[0010] Further, the GL3523-S chip includes a USB3.0 signal input pin, a USB3.0 signal output pin, and a USB2.0 signal output pin. Among them, the USB3.0 signal input pin is connected to the TYPEC interface module, the USB3.0 signal output pin is used to output the USB3.0 signal, the USB2.0 signal output pin is connected to the GL850G chip, and the USB2.0 signal output pin is used to output the USB2.0 signal.

[0011] Further, the integrated module further includes a PAM8003 power amplifier chip. One end of the PAM8003 power amplifier chip is connected to the audio pin of the MT9800GWPT / DG chip, and the other end is used to connect to the speaker.

[0012] Further, the integrated module further includes a voltage conversion module. One end of the voltage conversion module is used to receive the input voltage, and the other end is connected to the bridging module and the integrated module. The voltage conversion module is used to convert the input voltage to obtain multiple converted voltages.

[0013] Further, the voltage conversion module includes a TPS54302 conversion chip, an MP2491C conversion chip, a JW5222 conversion chip, and a JW5255ADFN chip. One end of the TPS54302 conversion chip, the MP2491C conversion chip, the JW5222 conversion chip, and the JW5255ADFN chip is connected to the integrated module and the input voltage, and the other end is used to output the converted voltage.

[0014] Further, the integrated module further includes a key module, the key module is connected to the key pins of the MT9800GWPT / DG chip, and the key module is used to provide key signals to the MT9800GWPT / DG chip.

[0015] Further, the integrated module further includes a backlight constant current board control module. One end of the backlight constant current board control module is connected to the dimming pin of the MT9800GWPT / DG chip, and the other end is used to be connected to the backlight constant current board of the display. The backlight constant current board control module is used to perform zone dimming on the backlight constant current board.

[0016] The multi-functional 27mini LED display main board disclosed by the present utility model includes a bridging module and an integrated module. The connection ports of the mini LED display are extended through the bridging module, so that various connection devices can be extended and compatible; moreover, an integrated module with an IC integrated chip is also integrated, which has strong processing capabilities and can support the operation of various connection devices, greatly improving the compatibility of the mini LED display main board. The multi-functional 27mini LED display main board disclosed by the present utility model solves the problem of poor compatibility of the existing mini LED display main board. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a structural block diagram of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0019] Figures 2A - 2C is a circuit schematic diagram of the MT9800GWPT / DG chip of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0020] Figure 3 It is the circuit schematic diagram of the first DP interface module of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0021] Figure 4 It is the circuit schematic diagram of the second DP interface module of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0022] Figure 5 It is the circuit schematic diagram of the TYPEC interface module of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0023] Figure 6 It is the circuit schematic diagram of the GL3523-S chip of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0024] Figure 7 It is the circuit schematic diagram of the GL850G chip of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0025] Figure 8 It is the circuit schematic diagram of the expansion circuit of the USB2.0 expansion signal output pins of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0026] Figures 9A - 9C It is the circuit schematic diagram of the expansion output circuit of three-way GL3523-S chips of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0027] Figure 10 It is the circuit schematic diagram of the PAM8003 power amplifier chip of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0028] Figure 11 It is the circuit schematic diagram of the TPS54302 conversion chip of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0029] Figure 12 It is the circuit schematic diagram of the MP2491C conversion chip of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0030] Figure 13 It is the circuit schematic diagram of the JW5222 conversion chip of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0031] Figure 14 It is the circuit schematic diagram of the JW5255ADFN conversion chip of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0032] Figure 15 It is the circuit schematic diagram of the CORE_PD_CTR switch control circuit of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0033] Figure 16 It is the circuit schematic diagram of the key module of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0034] Figure 17 It is the circuit schematic diagram of the backlight constant current board control module of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model;

[0035] Figure 18 It is the principle structure block diagram of a multi-functional 27mini LED display main board provided by an embodiment of the present utility model. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0037] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprise" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0038] It should also be understood that the terms used in this specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in this specification of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0039] It should be further understood that the term " / and / " used in this specification of the present utility model and the appended claims refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0040] Figures 1 - 18 An embodiment of a multi-functional 27mini LED display main board provided by the present utility model is shown. The multi-functional 27mini LED display main board 10 of this embodiment includes a bridging module 11 and an integration module 12. Among them, one end of the bridging module 11 is used to connect to an external device, and the other end is used to connect to a connection device. The bridging module 11 is used to expand the connection ports of the mini LED display including the multi-functional 27mini LED display main board; the integration module 12 includes an IC integration chip. One end of the IC integration chip is used to connect to the external device, and the other end is used to connect to the bridging module 11. The IC chip is used to process the audio and video signals transmitted by the external device and support the operation of multiple connection devices. It should be noted that in this embodiment, the external device can be a computer device, a server, etc. The connection device can be an electronic device such as a touch screen or a camera device. The multi-functional 27mini LED display main board 10 of the present utility model expands the connection ports of the mini LED display through the bridging module 11, so as to be compatible with multiple connection devices; moreover, it also integrates an integration module 12 with an IC integration chip, which has strong processing capabilities and can support the operation of multiple connection devices, greatly improving the compatibility of the mini LED display main board 10.

[0041] In an embodiment, such as this embodiment, the IC integration chip is an MT9800GWPT / DG chip. The MT9800GWPT / DG chip includes a DP signal input pin and a V-BY-ONE signal output pin. Among them, the DP signal input pin is used to receive the audio and video signals transmitted by the external device, and the V-BY-ONE signal output pin is used to transmit images and / or video signals to the display panel of the mini LED display. Specifically, as Figures 2A - 2C shown, the MT9800GWPT / DG chip is composed of three parts: "US3A module, US3B module, and US3D module". Among them, the pins corresponding to the DP-HBR3-RX0 area and the DP-HBR3-RX1 area in the US3B module are DP signal input pins; the pins corresponding to the VBY1 area in the US3A module are V-BY-ONE signal output pins.

[0042] Furthermore, the integration module 12 further includes a DP interface module. One end of the DP interface module is used to connect to the external device, and the other end is connected to the DP signal input pin. Specifically, the DP interface module includes a first DP interface module and a second DP interface module. Among them, as Figure 3 shown, Figure 3It is the circuit schematic diagram of the first DP interface module. One end of the first DP interface module is used to connect to an external device, and the "DP_0 pin" at the other end is connected to the pin corresponding to the DP-HBR3-RX0 area in the US3A module of the MT9800GWPT / DG chip. Similarly, as Figure 4 shown, Figure 4 It is the circuit schematic diagram of the second DP interface module. One end of the second DP interface module is used to connect to an external device, and the "DP_1 pin" at the other end is connected to the pin corresponding to the DP-HBR3-RX1 area in the US3A module of the MT9800GWPT / DG chip.

[0043] In one embodiment, such as this embodiment, the bridging module 11 includes a TYPEC interface module, a GL3523-S chip, and a GL850G chip. Among them, one end of the TYPEC interface module is used to connect to the external device, and the other end is connected to one end of the GL3523-S chip; the other end of the GL3523-S chip is connected to one end of the GL850 chip, and the other end of the GL850 chip is used to connect to the connecting device. Specifically, as Figure 5 shown, Figure 5 It is the circuit schematic diagram of the TYPEC interface module. Figure 6 It is the circuit schematic diagram of the GL3523-S chip. Figure 7 It is the circuit schematic diagram of the GL850G chip. Among them, the GL3523-S chip includes a USB3.0 signal input pin, a USB3.0 extended signal output pin, and a USB2.0 extended signal output pin. Among them, the USB3.0 signal input pin is connected to the TYPEC interface module; the USB3.0 extended signal output pin is used to output the USB3.0 signal; the USB2.0 extended signal output pin is connected to the GL850G chip, and the USB2.0 extended signal output pin is used to output the USB2.0 signal.

[0044] Furthermore, in this embodiment, the USB2.0 extended signal output pin is used to connect to a camera and a touch screen. Among them, the USB2.0 extended signal output pin is connected to the camera and the touch screen through an extended circuit as Figure 8 shown.

[0045] Furthermore, the USB3.0 output extended signal output pin is a 3-way output pin, which is respectively connected to the extended output circuits of three GL3523-S chips, and the extended output circuits of each GL3523-S chip are the same. As Figures 9A - 9C shown, Figures 9A - 9C It is the circuit schematic diagram of the extended output circuits of the three GL3523-S chips.

[0046] Further, in one embodiment, such as this embodiment, the integration module 12 further includes a PAM8003 power amplifier chip. One end of the PAM8003 power amplifier chip is connected to the audio pin of the MT9800GWPT / DG chip, and the other end is used to connect to a speaker. Among them, the pins corresponding to the AUDIO area in the MT9800GWPT / DG chip are the audio signal pins of the MT9800GWPT / DG chip. As Figure 10 shown, Figure 10 is the circuit schematic diagram of the PAM8003 power amplifier chip.

[0047] Further, in one embodiment, such as this embodiment, the integration module 12 further includes a voltage conversion module. One end of the voltage conversion module is used to receive an input voltage, and the other end is connected to the bridging module 11 and the integration module 12. The voltage conversion module is used to convert the input voltage to obtain multiple converted voltages. Specifically, the voltage conversion module includes a TPS54302 conversion chip, an MP2491C conversion chip, a JW5222 conversion chip, and a JW5255ADFN chip. One ends of the TPS54302 conversion chip, the MP2491C conversion chip, the JW5222 conversion chip, and the JW5255ADFN chip are connected to the integration module 12 and the input voltage, and the other ends are used to output the converted voltages. Among them, in this embodiment, as Figure 11 shown, Figure 11 is the circuit schematic diagram of the TPS54302 conversion chip. The TPS54302 conversion chip is connected to the voltage conversion control pin of the MT9800GWPT / DG chip, and the control signal output by the MT9800GWPT / DG chip is used to control the TPS54302 conversion chip to convert the 24V DC voltage into 12V and / or 5V DC voltages. The GPIO01 pin in the MT9800GWPT / DG chip outputs a POWER_STB control signal for controlling the TPS54302 conversion chip to output 12V_Backlight; the control signal output by the GPIO_0A3 pin in the MT9800GWPT / DG chip is USB_SEL0, which is used to control the TPS54302 chip to output 5V_USB2.0. It should be noted that, in this embodiment, the TPS54302 conversion chip is used to obtain 5V of the system. In order to ensure the operation of the system, this chip does not control the switch.

[0048] Among them, in this embodiment, as Figure 12 shown, Figure 12It is the circuit schematic diagram of the MP2491C conversion chip. The MP2491C conversion chip is connected to the GPIO07 pin and the GPI013 pin of the MT9800GWPT / DG chip. The control signal output by the MT9800GWPT / DG chip is used to control the MP2491C conversion chip to convert the 24V DC voltage into 12V and / or 5V DC voltage. Specifically, the GPIO07 pin in the MT9800GWPT / DG chip outputs the PANEL_ON control signal, which is used to control the MP2491C conversion chip to output 12V_Pannel; the control signal output by the GPI013 pin in the MT9800GWPT / DG chip is HUB_CTL, which is used to control the MP2491C chip to output 5V_USB3.0.

[0049] Among them, in this embodiment, as Figure 13 shown, Figure 13 It is the circuit schematic diagram of the JW5222 conversion chip. The JW5222 conversion chip is connected to the GPIO45 pin of the MT9800GWPT / DG chip. The control signal output by the MT9800GWPT / DG chip is used to control the JW5222 conversion chip to convert and output 3.3V and 1.5V DC voltage. Specifically, the GPIO45 pin in the MT9800GWPT / DG chip outputs the DDR_PD_CTRL control signal, which is used to control the JW5222 conversion chip to output 3.3V and 1.5V.

[0050] Among them, in this embodiment, as Figure 14 shown, Figure 14 It is the circuit schematic diagram of the JW5255ADFN conversion chip. Figure 15 It is the circuit schematic diagram of the CORE_PD_CTR switch control circuit. The JW5222ADFN conversion chip is connected to the CORE_PD_CTR switch control circuit. The CORE_PD_CTRL control signal output by the CORE_PD_CTR switch control circuit is used to control the JW5222ADFN conversion chip to convert and output 0.95V voltage. It should be noted that in this embodiment, the switch of the CORE_PD_CTR switch control circuit is controlled by 1.5V, and it is ensured that the turn-off of 0.95V lags behind 1.5V.

[0051] Furthermore, in an embodiment, such as this embodiment, the integrated module 12 further includes a key module. The key module is connected to the key pin of the MT9800GWPT / DG chip, and the key module is used to provide a key signal to the MT9800GWPT / DG chip. As Figure 16 shown, Figure 16This is the circuit schematic diagram of the button module. Specifically, the button module is a button indicator interface circuit, and its input end is connected to the button pin corresponding to the "KEY" area in the MT9800GWPT / DG chip.

[0052] Further, in an embodiment, such as this embodiment, the integrated module further includes a backlight constant current board control module. One end of the backlight constant current board control module is connected to the dimming pin of the MT9800GWPT / DG chip, and the other end is used to connect to the backlight constant current board of the display. The backlight constant current board control module is used to perform zonal dimming on the backlight constant current board. As Figure 17 shown, Figure 17 This is the circuit schematic diagram of the backlight constant current board control module. Among them, the pin corresponding to the GPIO label in the MT9800GWPT / DG chip is the dimming pin of the MT9800GWPT / DG chip. The Localdimming control signal output by this pin is input to the backlight constant current board through a connector for Local dimming (zonal dimming).

[0053] In summary, the circuit schematic diagrams of the above-mentioned modules can form a main board of a multifunctional 27-inch mini LED display, as Figure 18 shown, Figure 18 This is the principle structure block diagram of the multifunctional 27 mini LED display main board 10 of the embodiment of the present utility model. The multifunctional 27 mini LED display main board 10 of the present embodiment uses the MT9800GWPT / DG chip. The MT9800GWPT / DG chip is the latest overall SoC solution processing IC, which is used for the latest and most advanced stereo display LCD monitors with a panel resolution of up to 2560x1440. It is configured with an integrated ADC / PLL, an integrated multifunctional HDMI2.1 / DP1.4 compatible receiver as a configurable digital input, a high-quality 10-bit processing display processing engine, an RTE engine for enhancing the response time, and an advanced 32-bit integrated microcontroller. It is equipped with a new low-line number and low EMI video interface, an embedded display port (eDP) with a link rate of 2.7 or 5.4 Gbps, V-by-One and LVDS interface technologies. The MT9800GWPT / DG chip supports complete interoperability and provides a display port interface with a rate of 8.1 Gbps / lane. In order to further reduce the system cost, the MT9800GWPT / DG chip also integrates the power management control capabilities required for the green mode and the spread spectrum support for EMI management.

[0054] The main board 10 of the multi-functional 27mini LED monitor in the embodiment of the present utility model uses mini DP connectors (i.e., mini DP1 and mini DP2) to input signals, outputs V-BY-ONE signals to the panel, and outputs power and control signals through the connectors to adjust the brightness and switch of the backlight of the backlight constant current board. The USB3.0 Hub of TYPEC enables two-way recognition of TYPEC input and output. The use of the USB2.0 Hub enables the monitor to be equipped with touch and camera functions.

[0055] The multi-functional 27mini LED monitor main board provided by the present utility model includes a bridging module and an integrated module. The connection ports of the mini LED monitor are extended through the bridging module, so that it can be extended to be compatible with a variety of connection devices. Moreover, it also integrates an integrated module with an IC integrated chip, which has strong processing capabilities and can support the operation of a variety of connection devices, greatly improving the compatibility of the mini LED monitor main board. The multi-functional 27miniLED monitor main board disclosed by the present utility model solves the problem of poor compatibility of the existing mini LED monitor main boards.

[0056] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or replacements, and these modifications or replacements should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A multifunctional 27mini LED display motherboard, characterized in that: include: A bridge module, one end of which is used to connect to an external device and the other end of which is used to connect to a connection device, the bridge module is used to expand the connection port of the mini LED display including the multifunctional 27mini LED display motherboard; The integrated module includes an IC integrated chip, one end of which is used to connect to the external device, and the other end is used to connect to the bridge module. The IC integrated chip is used to process the audio and video signals transmitted by the external device and support the operation of multiple connected devices.

2. The multifunctional 27mini LED display motherboard according to claim 1, characterized in that: The IC integrated chip is an MT9800GWPT / DG chip, and the MT9800GWPT / DG chip includes a DP signal input pin and a V-BY-ONE signal output pin, wherein the DP signal input pin is used to receive the audio and video signal, and the V-BY-ONE signal output pin is used to transmit image and / or video signals to the display panel of the mini LED display.

3. The multifunctional 27mini LED display motherboard according to claim 2, characterized in that: The integrated module also includes a DP interface module, one end of which is used to connect to the external device, and the other end of which is connected to the DP signal input pin.

4. The multifunctional 27mini LED display motherboard according to claim 1, characterized in that: The bridge module includes a TYPEC interface module, a GL3523-S chip and a GL850G chip. One end of the TYPEC interface module is used to connect to the external device, and the other end is connected to one end of the GL3523-S chip; the other end of the GL3523-S chip is connected to one end of the GL850G chip, and the other end of the GL850G chip is used to connect to the connection device.

5. The multifunctional 27mini LED display motherboard according to claim 4, characterized in that: The GL3523-S chip includes a USB3.0 signal input pin, a USB3.0 signal output pin and a USB2.0 signal output pin, wherein the USB3.0 signal input pin is connected to the TYPEC interface module, the USB3.0 signal output pin is used to output the USB3.0 signal, the USB2.0 signal output pin is connected to the GL850G chip, and the USB2.0 signal output pin is used to output the USB2.0 signal.

6. The multifunctional 27mini LED display motherboard according to claim 2, characterized in that: The integrated module also includes a PAM8003 power amplifier chip, one end of the PAM8003 power amplifier chip is connected to the audio pin of the MT9800GWPT / DG chip, and the other end is used to connect to the speaker.

7. The multifunctional 27mini LED display motherboard according to claim 1, characterized in that: The integrated module also includes a voltage conversion module, one end of which is used to receive an input voltage, and the other end of which is connected to the bridge module and the integrated module. The voltage conversion module is used to convert the input voltage to obtain a variety of conversion voltages.

8. The multifunctional 27mini LED display motherboard according to claim 7, characterized in that: The voltage conversion module includes a TPS54302 conversion chip, an MP2491 C conversion chip, a JW5222 conversion chip and a JW5255ADFN chip. One end of the TPS54302 conversion chip, the MP2491 C conversion chip, the JW5222 conversion chip and the JW5255ADFN chip is connected to the integrated module and the input voltage, and the other end is used to output the conversion voltage.

9. The multifunctional 27mini LED display motherboard according to claim 2, characterized in that: The integrated module also includes a key module, which is connected to a key pin of the MT9800GWPT / DG chip and is used to provide a key signal to the MT9800GWPT / DG chip.

10. The multifunctional 27mini LED display motherboard according to claim 2, characterized in that: The integrated module also includes a backlight constant current board control module, one end of the backlight constant current board control module is connected to the dimming pin of the MT9800GWPT / DG chip, and the other end is used to connect to the backlight constant current board of the display, and the backlight constant current board control module is used to perform regional dimming on the backlight constant current board.

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