Multi-screen display and driving module built in multi-screen display

Abstract

The utility model relates to a multi-screen display which comprises a plurality of display screens, a data port, a data expansion module, a plurality of decoders and a plurality of data converters. The data port is used for being connected with external equipment to receive display data; the data expansion module is electrically connected with the data port and is used for expanding the display data into a plurality of multi-path display data respectively corresponding to the plurality of display screens; the plurality of decoders are electrically connected with the data expansion module respectively, the plurality of decoders correspond to multiple paths of display data respectively, and each decoder is used for receiving the corresponding path of display data and decoding and converting the display data into first data; and each data converter is electrically connected with one corresponding decoder and one corresponding display screen, and is used for receiving the first data, converting the first data into second data and providing the second data to the corresponding display screen to drive the display screen to display an image.

Description

Technical Field

[0001] The utility model relates to the technical field of display, and in particular to a multi-screen display and a driving module built in the multi-screen display. Background Art

[0002] With the development of graphics card technology, in home entertainment, office design, business meetings, supermarkets, banks and other scenarios, it is often necessary to display materials such as videos, pictures, PPT, etc., or to facilitate design, etc., it is necessary to use multiple screens to facilitate users to use or display different information content on different screens, and to facilitate multi-tasking. At present, computers are connected to 2 or more independent display screens by connecting cables, etc. However, this method is limited by the number of computer interfaces and hardware systems, resulting in a limited number of independent display screens that can be connected; and during installation and use, independent power supplies and connecting cables are required, resulting in a large number of cables and cumbersome installation, which makes the overall appearance messy, inconvenient to use and costly. Utility Model Content

[0003] The main purpose of the utility model is to provide a multi-screen display for solving the above-mentioned problems.

[0004] In a first aspect, the utility model provides a multi-screen display, comprising: a plurality of display screens; a data port for connecting an external device to receive display data; a data expansion module, electrically connected to the data port, and used to expand the display data into a plurality of channels of display data corresponding to the plurality of display screens; a plurality of decoders, respectively electrically connected to the data expansion module, the plurality of decoders respectively corresponding to the plurality of channels of display data, and each of the decoders is used to receive a corresponding channel of display data and decode the display data into first data; and a plurality of data converters, each of the data converters is respectively electrically connected to a corresponding decoder and a corresponding display screen, and is used to receive the first data and convert the first data into second data, and provide the second data to the corresponding display screen to drive the display screen to display images.

[0005] Furthermore, the data port and the data expansion module both support USB 3.0 communication protocol; the display data is data in USB 3.0 format, and the data expansion module is used to receive one channel of data in USB 3.0 format and output multiple channels of data in USB 3.0 format to multiple decoders respectively.

[0006] Furthermore, the decoder is a USB to HDMI decoder, and the first data is output as data in HDMI format.

[0007] Furthermore, the data converter is an HDMI to EDP data converter, and the second data is data in EDP format; and the display screen is a liquid crystal display screen.

[0008] Furthermore, the data port is a data / power supply two-in-one port, and the data port includes a power supply terminal and a data terminal.

[0009] Furthermore, the multi-screen display also includes a power supply port or the data port is a data / power supply two-in-one port, and the power supply port or the data / power supply two-in-one port is used to connect the external device or another external device to receive a first power supply signal, and the first power supply signal is used to be provided to the data expansion module, the decoder, the data converter and the display screen.

[0010] Furthermore, the data port is a Type-C port; and the power supply port is a Type-C port.

[0011] Furthermore, the data expansion module includes a data expansion chip and a first power supply module electrically connected to the data expansion chip, the data expansion chip is used to convert the display data into multiple display data; the first power supply module is used to receive the first power supply signal and supply power to the data expansion chip.

[0012] Furthermore, the first power supply module is used to convert the first power supply signal into a second power supply signal and a third power supply signal, and provide the first power supply signal, the second power supply signal and the third power supply signal to the data expansion chip; the first power supply signal, the second power supply signal and the third power supply signal are 5V, 3.3V and 1.2V respectively.

[0013] Furthermore, the decoder includes a decoding chip and a second power supply module electrically connected to the decoding chip, the decoding chip is used to decode the display data to obtain the first data, and the second power supply module is used to receive the first power supply signal and supply power to the decoding chip.

[0014] Furthermore, the second power supply module is used to convert the first power supply signal into a fourth power supply signal, a fifth power supply signal and a sixth power supply signal, and provide the fourth power supply signal, the fifth power supply signal and the sixth power supply signal to the decoding chip; the fourth power supply signal, the fifth power supply signal and the sixth power supply signal are 3.3V, 1.1V and 2.5V respectively.

[0015] Furthermore, the data converter includes a data conversion chip and a third power supply module electrically connected to the data conversion chip, the data conversion chip is used to convert the format of the first data to obtain the second data, and the third power supply module is used to receive the first power supply signal and supply power to the data conversion chip.

[0016] Furthermore, the third power supply module is used to convert the first power supply signal into a seventh power supply signal and an eighth power supply signal, and the seventh power supply signal and the eighth power supply signal are 3.3V and 1.1V respectively.

[0017] Furthermore, the display screen also includes a display panel and a fourth power supply module electrically connected to the display panel, the display panel is used to receive the second data for image display, and the fourth power supply module is used to receive the first power supply signal and supply power to the display panel.

[0018] Furthermore, the fourth power supply module is used to convert the first power supply signal into a ninth power supply signal and a tenth power supply signal, and the ninth power supply signal and the tenth power supply signal are 3.3V and 12V respectively.

[0019] Furthermore, the multi-screen display also includes a control module, which is electrically connected to the data port, the data expansion module, the multiple decoders and at least one of the multiple data converters to detect and / or control the data port, the data expansion module, the multiple decoders and at least one of the multiple data converters.

[0020] Furthermore, the multi-screen display also includes a key module, which is electrically connected to the control module and is used to generate a key signal based on the user's operation. The control module is used to receive the key signal and control the opening and closing of one or more of the data expansion module, the decoder, the data converter and the display screen according to the key signal.

[0021] Furthermore, the multi-screen display further comprises an indicator light module, and the indicator light module is used to indicate the working status of the multi-screen display.

[0022] Furthermore, the multi-screen display further includes a power management module, and the power management module is electrically connected between the power supply port or the data / power supply two-in-one port and the data expansion module.

[0023] In the second aspect, the utility model provides a driving module built into a multi-screen display, which is arranged in the display screen of the multi-screen display, and includes: a data port for connecting an external device to receive display data; a data expansion module, which is electrically connected to the data port and is used to expand the display data into multiple channels of display data corresponding to multiple display screens; multiple decoders, which are respectively electrically connected to the data expansion module, and the multiple decoders respectively correspond to multiple channels of display data, and each decoder is used to receive a corresponding channel of display data and decode and convert the display data into first data; and multiple data converters, each of which is respectively electrically connected to a corresponding decoder and a corresponding display screen, and is used to receive the first data and convert the first data into second data, and provide the second data to the corresponding display screen to drive the display screen to display images. .

[0024] The utility model has the following beneficial effects: compared with the prior art, the multi-screen display provided by the utility model first uses the data expansion module to convert the display data, thereby obtaining multi-channel display data, and then sets multiple decoders to receive the display data one by one, and performs decoding and conversion to obtain multi-channel first data, and finally converts the multi-channel first data into second data that can be displayed on multiple display screens through multiple data converters, so that the multiple display screens can respectively display corresponding image information; the utility model realizes displaying the display data on multiple display screens through the steps of data expansion, decoding, conversion, etc., so that data display of multiple screens can be realized by connecting one data line or one data line plus a power supply port, and the number of display screens can be increased or decreased as needed, which not only avoids the number limit of data interfaces and reduces the requirements for hardware systems, but also effectively reduces the number of wires such as data lines and power lines, effectively reduces production costs, and makes the installation of the product simple and quick, realizes the overall control and coordination of the product, makes it easy to use, and is more beautiful and tidy as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 The utility model is a circuit block diagram of a multi-screen display.

[0027] Figure 2The present invention is a circuit block diagram of a modified embodiment of a multi-screen display.

[0028] Figure 3 The present invention is a circuit block diagram of another modified embodiment of the multi-screen display.

[0029] Figure 4 The utility model is a circuit diagram of a data expansion chip for a multi-screen display.

[0030] Figure 5 The utility model is a circuit diagram of a decoding chip of a multi-screen display.

[0031] Figure 6 The utility model is a circuit diagram of a data conversion chip of a multi-screen display. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1 The embodiment of the utility model provides a multi-screen display 100, which includes multiple display screens 10, a data port 20, a power supply port 30, a control module 40, a button module 50a, an indicator light module 50b, a data expansion module 60, multiple decoders 70 and multiple data converters 80.

[0034] The data port 20 is used to connect an external device (such as an external device such as a computer host electrically connected via a data line) to receive display data D0. The data port 20 can support USB communication protocol, specifically USB3.0 communication protocol, but is not limited to the above, and the display data received by the data port 20 is data in USB 3.0 format. Specifically, the data port 20 can be a Type-C port, and specifically, the data port includes a power supply terminal and a data terminal.

[0035] In this embodiment, the multi-screen display 100 includes a power supply port 30 and a data port 20, the power supply port 30 is used to connect an external device (i.e., an external device connected to the data port 20) or another external device to receive a first power supply signal V1, and the first power supply signal V1 is used to be provided to the data expansion module 60, the decoder 70, the data converter 80, and the display screen 10, etc., so that the data expansion module 60, the decoder 70, the data converter 80, and the display screen 10, etc. obtain a working voltage. The power supply port 30 can also be a Type-C port, but is not limited to the above.

[0036] like Figure 2 As shown, in a modified embodiment, the data port 20 is a data / power supply two-in-one port. Figure 1 , the power supply port 30 can also be omitted. The power supply terminal of the data port 20 can receive the first power supply voltage V1, and the data terminal of the data port 20 can receive the display data D0. It can be understood that the simultaneous transmission of power supply and data can be achieved through one data port 20 (i.e., one data line), which can make the use of the multi-screen display 100 more convenient, lower cost, and better user experience.

[0037] The first supply voltage V1 may be 5V, but is not limited thereto.

[0038] The data expansion module 60 can support the USB 3.0 communication protocol; the data expansion module 60 is used to receive one channel of data in USB 3.0 format and output multiple channels of data in USB 3.0 format to multiple decoders 70 respectively.

[0039] The plurality of decoders 70 are respectively electrically connected to the data expansion module 60, and the plurality of decoders 70 respectively correspond to the plurality of display data D0, and each decoder 70 is used to receive the corresponding display data D0 and decode the display data D0 into the first data D1. Specifically, the decoder 70 may be a USB to HDMI decoder, and the first data D1 may be data in HDMI format, but is not limited thereto.

[0040] Among the multiple data converters 80, each data converter 80 is electrically connected to a corresponding decoder 80 and a corresponding display screen 10, and is used to receive the first data D1 and convert the first data D1 into the second data D2, and provide the second data D2 to the corresponding display screen 10 to drive the display screen 10 to display an image. Specifically, the data converter 80 can be an HDMI to EDP data converter 80, and the second data D2 can be data in EDP (Embedded Display Port, EDP) format; the display screen 10 can be a liquid crystal display screen, but it is not limited to the above.

[0041] It can be understood that HDMI refers to High Definition Multimedia Interface, which is a fully digital video and sound transmission interface that can send uncompressed audio and video signals. HDMI can be used in set-top boxes, DVD players, personal computers, TVs, game consoles, integrated amplifiers, digital audio and TVs and other devices. HDMI can send audio and video signals at the same time. Since audio and video signals use the same wire, the difficulty of installing the system line is greatly simplified. The EDP format is a standard protocol in the field of digital display technology. Its founder is the Video Electronics Standards Association (VESA). The EDP protocol is an extension of the DP (Display Port) application in the embedded direction architecture and protocol, so the EDP protocol is fully compatible with the DP protocol. Compared with DVI / HDMI, EDP has high bandwidth, good integration, and simple related product design. The interface can be used in other integrated display panels and image processors such as laptops, tablets, and mobile phones. The EDP interface reduces device complexity, supports the necessary functions of key cross-industry applications, and provides performance scalability to support the next generation of displays with higher color depth, refresh rate, and display resolution.

[0042] Furthermore, the data expansion module 60 may include a data expansion chip 60a and a first power supply module 60b electrically connected to the data expansion chip 60a, the data expansion chip 60a is used to convert the display data D0 into multi-channel display data D0; the first power supply module 60b is used to receive the first power supply signal V1 and supply power to the data expansion chip 60a. The first power supply module 60b is used to convert the first power supply signal V1 into a second power supply signal V2 and a third power supply signal V3, and provide the first power supply signal V1, the second power supply signal V2 and the third power supply signal V3 to the data expansion chip 60a; the first power supply signal V1, the second power supply signal V2 and the third power supply signal V3 can be 5V, 3.3V and 1.2V respectively, but are not limited to the above.

[0043] Furthermore, the decoder 70 includes a decoding chip 70a and a second power supply module 70b electrically connected to the decoding chip 70a, the decoding chip 70a is used to decode the display data D0 to obtain the first data D1, and the second power supply module 70b is used to receive the first power supply signal V1 and supply power to the decoding chip 70a. Specifically, the second power supply module 70b can convert the first power supply signal V1 into a fourth power supply signal V4, a fifth power supply signal V5 and a sixth power supply signal V6, and provide the fourth power supply signal V4, the fifth power supply signal V5 and the sixth power supply signal V6 to the decoding chip 70a; the fourth power supply signal V4, the fifth power supply signal V5 and the sixth power supply signal V6 are 3.3V, 1.1V and 2.5V respectively, but are not limited to the above.

[0044] Further, the data converter 80 includes a data conversion chip 80a and a third power supply module 80b electrically connected to the data conversion chip 80a, the data conversion chip 80a is used to perform format conversion on the first data D1 to obtain the second data D2, and the third power supply module 80b is used to receive the first power supply signal V1 and supply power to the data conversion chip 80b. Specifically, the third power supply module 80b can be used to convert the first power supply signal V1 into a seventh power supply signal V7 and an eighth power supply signal V8, the seventh power supply signal V7 and the eighth power supply signal V8 are 3.3V and 1.1V respectively, but are not limited to the above.

[0045] Further, the display screen 10 also includes a display panel 10a and a fourth power supply module 10b electrically connected to the display panel 10a, the display panel 10a is used to receive the second data D2 for image display, and the fourth power supply module 80b is used to receive the first power supply signal V1 and supply power to the display panel 10a. Specifically, the fourth power supply module 10b is used to convert the first power supply signal V1 into a ninth power supply signal V9 and a tenth power supply signal V10, the ninth power supply signal V9 and the tenth power supply signal V10 are 3.3V and 12V respectively, but are not limited to the above.

[0046] In addition, the control module 40 is electrically connected to the data port 20, the power supply port 30, the data expansion module 60, at least one of the multiple decoders 70 and the multiple data converters 80 to detect and / or control at least one of the data port 20, the power supply port 30, the data expansion module 60, the multiple decoders 70, the multiple data converters 80 and the display screen 10.

[0047] The key module 50a can be electrically connected to the control module 40, and the key module 50a is used to generate a key signal based on the user's operation. The control module 40 is used to receive the key signal and control the data expansion module 60, multiple decoders 70 and multiple data converters 80, and one or more of at least one of the multiple display screens 10 to turn on and off according to the key signal.

[0048] The indicator light module 50 b may be electrically connected to the control module 40 and used to indicate the working status of the multi-screen display 100 .

[0049] like Figure 3 As shown, in another modified embodiment, the multi-screen display 100 also includes a power management module 90, which is electrically connected between the power supply port 20 or the data / power supply two-in-one port and the data expansion module 60, and the power management module 90 is also electrically connected to the control module 40.

[0050] Each power supply module can filter, stabilize, boost and reduce the voltage of the first power supply signal V1, so that the first power supply signal V1 becomes more stable and reduces interference, thereby protecting other modules or components and improving the service life of the product. The power management module 90 may include a power management chip for detecting signals from the data port 20 and / or the power supply port 30 to prevent unsafe problems caused by reverse connection of the data line, so as to protect the multi-screen display 100.

[0051] It can be understood that the multi-screen display 100 provided by the present invention can be provided with 2, 3 or more than 3 display screens 10, and the user can increase or decrease the number of display screens 10 according to actual needs.

[0052] At least one data port 20 is also provided on the multi-screen display 100 to receive display data of an external device. In the present embodiment, the data port 20 is a Type-C data port 20, and the power supply port 30 is a Type-C data port 20. The data port 20 and the power supply port 30 are two different ports, and have different functions respectively, that is, the data port 20 is only used to receive display data of an external device, and the power supply port 30 is only used to receive the first power supply signal V1 and provide it to other modules for use; in other embodiments, the data port 20 and the power supply port 30 can both receive display data of an external device, and can also receive the first power supply signal V1 and provide it to the data expansion module 60, the decoder 70, the data converter 80 and the display screen 10, that is, the functions of the two are the same, the data port 20 can also be the power supply port 30, and the power supply port 30 can also be the data port 20, that is, the functions of the two are interchangeable.

[0053] After receiving the display data, the display data to be displayed is converted into 2-way, 3-way or more than 3-way first data through the internally arranged data expansion module 60, that is, the number of ways of the converted first data is determined according to the number of display screens 10; then, the 2-way, 3-way or more than 3-way first data is decoded and converted through the corresponding number of decoders 70, and then the obtained data is transmitted to the corresponding display screen 10 through the data converter 80, wherein the number of data converters 80 also corresponds to 2-way, 3-way or more than 3-way; that is, if 3 display screens 10 are required, the data expansion module 60 converts the display data D0 received by the data port 20 into 3-way display data D0, and decodes and converts the 3-way display data D0 received respectively into 3-way first data through 3 decoders 70, and then converts the 3-way first data into 3-way second data through 3 data converters 80 one by one, and transmits them to the three display screens 10 for display, thereby realizing image display of multiple display screens 10.

[0054] Continue reading Figure 1In the embodiment shown in the utility model, the data expansion module 60 includes a data expansion chip 60a and a first power supply module 60b. The data expansion chip 60a adopts GL3510 or a chip with the same performance. Figure 4 , Figure 4 FIG. 6 is a circuit diagram of the data expansion chip 60 a of the multi-screen display 100 of the present invention. Figure 4 The pin functions of the data expansion chip 60a shown in FIG. 6 are shown in Table 1 below.

[0055] Table 1 Pin function table of data expansion chip 60a

[0056]

[0057] It can be seen from Table 1 above that the GL3510 chip used as the data expansion chip 60a is a 4-port, low-power, configurable hub controller that complies with the USB 3.1 specification, supports super-speed, high-speed and full-speed USB connections, and is fully backward compatible with all USB 2.0 and USB 1.1 hosts; and the data expansion module 60 has built-in 5V to 3.3V and 5V to 1.2V regulators for power supply, which can save costs and simplify PCB design; in addition, the GL3510 chip also has a native fast charging function, and also allows portable devices to draw up to 1.5A of current from the GL3510 charging downstream port (CDP1) or the dedicated charging port (DCP2).

[0058] Continue reading Figure 1 The decoder 70 includes a decoding chip 70a and a second power supply module 70b. The decoding chip 70a is specifically MS9132 or a chip with the same performance. The MS9132 chip is a USB3.0 screen projection chip, which integrates a USB3.0 Device controller, a data transceiver module, and an audio and video processing module. The MS9132 can display or expand information on a PC, a smart phone, or a tablet computer to a larger display device through a USB3.0 interface, and supports HD video interface output. Please refer to Figure 5 , Figure 5 FIG. 1 is a circuit diagram of the decoding chip 70 a of the multi-screen display 100 of the present invention. Figure 5 The pin functions of the decoding chip 70a shown in FIG. 2 are shown in the following Table 2.

[0059] Table 2 Pin function table of decoding chip 70a

[0060]

[0061] Continue reading Figure 1In the present invention, the data converter 80 includes a data conversion chip 80a and a third power supply module 80b. The data conversion chip 80a is used to convert the second data into the second data, specifically RTD2566 or a chip with the same performance. Figure 6 , Figure 6 It is a circuit diagram of the data conversion chip 80a of the multi-screen display 100 of the present utility model. Figure 6 The functions of the pins of the data converter 80 chip shown in FIG. 8 are shown in Table 3 below.

[0062] Table 3 Pin function table of data converter chip 80a

[0063]

[0064]

[0065] Among them, I / O Legend (input / output chip characters): A=Analog, I=input, O=Output, P=Power, G=Ground.

[0066] In order to avoid the occurrence of harmonic interference problems in this embodiment, the data conversion chip 80a receives the required stable electrical signal. Through the setting of multiple power supply modules, the first power supply signal V1 to the ninth power supply signal V9 can be independent of each other, and can all be provided to the data expansion chip 60a, the decoder chip 70a and the converter chip 80a after filtering and voltage stabilization.

[0067] The utility model has the following beneficial effects: compared with the prior art, the multi-screen display 100 provided by the utility model first uses a data expansion module 60 to convert display data D0, thereby obtaining multiple first data, and then sets multiple decoders 70, which respectively receive the multiple display data D2 converted by the data expansion module 60, and perform decoding conversion to obtain multiple second data D2, and finally convert the multiple second data into data that can be displayed by multiple display screens 10 through a multiple data converter 80, so that the multiple display screens 10 can respectively display corresponding image information.

[0068] Furthermore, the utility model realizes data display of multiple screens by connecting one data line or one data line plus a power supply port through steps of data expansion, decoding, conversion, etc., and the number of display screens 10 can be increased or decreased as needed, which not only avoids the limitation on the number of data interfaces and reduces the requirements for the hardware system, but also effectively reduces the number of wires such as data lines and power lines, effectively reduces production costs, and makes the installation of the product simple and quick, realizes overall control and coordination of the product, makes it easy to use, and is more beautiful and tidy as a whole.

[0069] In the second aspect, the embodiment of the utility model also provides a driving module built into the multi-screen display 10. The driving module can be a main control circuit board, which includes a data port 20, a power supply port 30, a control module 40, a data expansion module 60, a plurality of decoders 70 and a plurality of data converters 80, etc., which are arranged on the main control circuit board; and the fourth power supply module of the display screen can also be arranged on the main control circuit board.

[0070] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0071] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B; in addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0072] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A multi-screen display, characterized in that: include: Multiple displays; Data port, used to connect external devices to receive display data; A data expansion module, electrically connected to the data port, and used for expanding the display data into a plurality of channels of display data respectively corresponding to a plurality of display screens; A plurality of decoders, electrically connected to the data expansion modules respectively, the plurality of decoders respectively corresponding to a plurality of channels of display data, and each of the decoders is used to receive a corresponding channel of display data and decode the display data into the first data; as well as A plurality of data converters, each of which is electrically connected to a corresponding decoder and a corresponding display screen, and is used to receive the first data and convert the first data into second data, and provide the second data to the corresponding display screen to drive the display screen to display an image.

2. The multi-screen display according to claim 1, characterized in that: The data port and the data expansion module both support the USB 3.0 communication protocol; the display data is data in USB 3.0 format, and the data expansion module is used to receive one channel of data in USB 3.0 format and output multiple channels of data in USB 3.0 format to multiple decoders respectively.

3. The multi-screen display according to claim 1, characterized in that: The decoder is a USB to HDMI decoder, and the first data output is data in HDMI format.

4. The multi-screen display according to claim 1, characterized in that: The data converter is an HDMI to EDP data converter, the second data is data in EDP format; and the display screen is a liquid crystal display screen.

5. The multi-screen display according to claim 1, characterized in that: The data port is a data / power supply two-in-one port, and the data port includes a power supply terminal and a data terminal.

6. The multi-screen display according to claim 1, characterized in that: The multi-screen display also includes a power supply port or the data port is a data / power supply two-in-one port, and the power supply port or the data / power supply two-in-one port is used to connect the external device or another external device to receive a first power supply signal, and the first power supply signal is used to be provided to the data expansion module, the decoder, the data converter and the display screen.

7. The multi-screen display according to claim 6, characterized in that: The data port is a Type-C port; the power supply port is a Type-C port.

8. The multi-screen display according to claim 6, characterized in that: The data expansion module includes a data expansion chip and a first power supply module electrically connected to the data expansion chip, the data expansion chip is used to convert the display data into multiple display data; the first power supply module is used to receive the first power supply signal and supply power to the data expansion chip.

9. The multi-screen display according to claim 8, characterized in that: The first power supply module is used to convert the first power supply signal into a second power supply signal and a third power supply signal, and provide the first power supply signal, the second power supply signal and the third power supply signal to the data expansion chip; the first power supply signal, the second power supply signal and the third power supply signal are 5V, 3.3V and 1.2V respectively.

10. The multi-screen display according to claim 6, characterized in that: The decoder includes a decoding chip and a second power supply module electrically connected to the decoding chip, the decoding chip is used to decode the display data to obtain the first data, and the second power supply module is used to receive the first power supply signal and supply power to the decoding chip.

11. The multi-screen display according to claim 10, characterized in that: The second power supply module is used to convert the first power supply signal into a fourth power supply signal, a fifth power supply signal and a sixth power supply signal, and provide the fourth power supply signal, the fifth power supply signal and the sixth power supply signal to the decoding chip; the fourth power supply signal, the fifth power supply signal and the sixth power supply signal are 3.3V, 1.1V and 2.5V respectively.

12. The multi-screen display according to claim 6, characterized in that: The data converter includes a data conversion chip and a third power supply module electrically connected to the data conversion chip, the data conversion chip is used to perform format conversion on the first data to obtain the second data, and the third power supply module is used to receive the first power supply signal and supply power to the data conversion chip.

13. The multi-screen display according to claim 12, characterized in that: The third power supply module is used to convert the first power supply signal into a seventh power supply signal and an eighth power supply signal, and the seventh power supply signal and the eighth power supply signal are 3.3V and 1.1V respectively.

14. The multi-screen display according to claim 6, characterized in that: The display screen also includes a display panel and a fourth power supply module electrically connected to the display panel, the display panel is used to receive the second data for image display, and the fourth power supply module is used to receive the first power supply signal and supply power to the display panel.

15. The multi-screen display according to claim 14, characterized in that: The fourth power supply module is used to convert the first power supply signal into a ninth power supply signal and a tenth power supply signal, wherein the ninth power supply signal and the tenth power supply signal are 3.3V and 12V respectively.

16. The multi-screen display according to claim 6, characterized in that: The multi-screen display also includes a control module, which is electrically connected to the data port, the data expansion module, multiple decoders and at least one of the multiple data converters to detect and / or control the data port, the data expansion module, multiple decoders and at least one of the multiple data converters.

17. The multi-screen display according to claim 16, characterized in that: The multi-screen display also includes a key module, which is electrically connected to the control module and is used to generate a key signal based on a user's operation. The control module is used to receive the key signal and control the data expansion module, the decoder, the data converter and one or more of the display screens to turn on and off according to the key signal.

18. The multi-screen display according to claim 17, characterized in that: The multi-screen display further comprises an indicator light module, and the indicator light module is used to indicate the working status of the multi-screen display.

19. The multi-screen display according to claim 6, characterized in that: The multi-screen display further includes a power management module, which is electrically connected between the power supply port or the data / power supply two-in-one port and the data expansion module.

20. A driving module built into a multi-screen display, arranged in a display screen of the multi-screen display, characterized in that: include: Data port, used to connect external devices to receive display data; A data expansion module, electrically connected to the data port, and used for expanding the display data into a plurality of channels of display data respectively corresponding to a plurality of display screens; A plurality of decoders, electrically connected to the data expansion modules respectively, the plurality of decoders respectively corresponding to a plurality of channels of display data, and each of the decoders is used to receive a corresponding channel of display data and decode the display data into the first data; as well as A plurality of data converters, each of which is electrically connected to a corresponding decoder and a corresponding display screen, and is used to receive the first data and convert the first data into second data, and provide the second data to the corresponding display screen to drive the display screen to display an image.

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