LED display device and display apparatus

Abstract

The application provides an LED display device and a display device, wherein the LED display device comprises a driving module, which is electrically connected with n groups of LED modules in sequence through n driving data lines; the driving module is also electrically connected with the n groups of LED modules in sequence through a control data line; the driving module generates a common control signal and n groups of driving signals and sends them to the n groups of LED modules; the LED modules select corresponding driving signals according to internal address settings and control LED lamp groups to work according to the common control signal. The LED display device of the application connects the driving module and the n groups of LED modules with the control data line and the n driving data lines respectively, selects corresponding driving signals through internal address settings of each LED module, does not interfere with each other among the LED modules, and shares the common control signal, so that the multiple LED modules can be connected with the same driving data line and control data line, and the failure rate is low and the wiring is simple.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of LED display, and particularly relates to an LED display device and a display equipment. BACKGROUND

[0002] As an important information display medium, LED display equipment is widely used in people's daily life, for example, LED display screens in stadiums, which are mainly used for setting up a scene atmosphere and playing sponsorship advertisements. Such LED display equipment is generally installed on a wall or hung in the center of the stadium, and no maintenance platform is provided on the front side, so that a top maintenance method needs to be used for daily maintenance. That is, after the cover plate of the display equipment box is removed from the back, part of the LED display panel is extracted to realize maintenance of the screen body.

[0003] Each LED display panel is composed of a plurality of LED display modules, and the plurality of LED display modules are generally connected in sequence or in a star type. The sequence connection has the advantages of simple wiring and low cost, but when a LED display module fails, it will affect all the LED display modules connected behind it, and the failure rate is high. The star type connection has higher reliability, but each LED display module needs to be connected with a controller, which is costly and complex in wiring. SUMMARY

[0004] The application aims to provide an LED display device and display equipment, and aims to solve the problems of high failure rate of the traditional LED display device or messy layout of wires.

[0005] In order to achieve the above-mentioned purpose, in a first aspect, an LED display device is provided, comprising a driving module and n groups of LED modules; wherein n>1;

[0006] The driving module is electrically connected with the n groups of LED modules in sequence through n driving data lines; and the driving module is also electrically connected with the n groups of LED modules in sequence through a control data line;

[0007] The driving module is configured to generate a common control signal and n groups of driving signals and send them to the n groups of LED modules;

[0008] The LED module is configured to select the corresponding driving signal according to the internal address setting and control the LED lamp group to work according to the common control signal.

[0009] In another possible implementation of the first aspect, the LED module comprises an input / output unit, a data selection unit and a bus control unit.

[0010] The input / output unit is electrically connected with the data selection unit and the bus control unit respectively;

[0011] The input / output unit is configured to receive the common control signal and send to the bus control unit, and receive n groups of the driving signals and send to the data selection unit;

[0012] The data selection unit is configured to select the corresponding driving signal according to the internal address setting;

[0013] The bus control unit is configured to control the LED lamp group to work according to the common control signal.

[0014] In another possible implementation of the first aspect, the LED module further comprises a row scanning driving unit, a communication unit, an LED driving unit and an LED lamp group;

[0015] The row scanning driving unit and the communication unit are electrically connected with the input / output unit, and the LED driving unit is electrically connected with the row scanning driving unit, the data selection unit, the bus control unit and the LED lamp group respectively;

[0016] The row scanning driving unit is configured to control the row / column switch of the LED driving unit to open or close according to a scanning signal;

[0017] The communication unit is configured to interact information with the driving module;

[0018] The LED driving unit is configured to drive the LED lamp group to work according to the driving signal and the common control signal;

[0019] The LED lamp group is configured to emit light according to the driving signal and the common control signal.

[0020] In another possible implementation of the first aspect, the driving signal comprises a three-primary-color serial driving signal.

[0021] In another possible implementation of the first aspect, the data selection unit comprises a data selector or a software program.

[0022] In another possible implementation of the first aspect, the driving module comprises an Ethernet unit and a receiving card unit;

[0023] The receiving card unit is electrically connected with the Ethernet unit and n groups of the LED module respectively;

[0024] The Ethernet unit is configured to interact information with a remote terminal;

[0025] The receiving card unit is configured to send the common control signals and the n groups of driving signals received by the Ethernet unit to the n groups of LED modules, respectively.

[0026] In a further possible implementation form of the first aspect, the input / output unit comprises a first interface;

[0027] The four driving signal input pins of the first interface are connected to the four groups of driving signals and electrically connected to the data selection unit, and the three control signal input pins of the first interface are connected to the three groups of common control signals and electrically connected to the bus control unit.

[0028] In a further possible implementation form of the first aspect, the bus control unit comprises a first bus transceiver;

[0029] One driving signal input pin of the first bus transceiver is electrically connected to the data selection unit, and the three control signal input pins of the first bus transceiver are electrically connected to the input / output unit, respectively.

[0030] In a further possible implementation form of the first aspect, the LED driving unit comprises a driving chip;

[0031] The input pins of the driving chip are connected to the control signals and the corresponding driving signals, respectively, and the output pins of the driving chip are electrically connected to the LED light group.

[0032] In a second aspect, an embodiment of the present application provides a display device, comprising the LED display device.

[0033] In the embodiment of the present application, the driving module and the n groups of LED modules are connected by the control data line and the n driving data lines, respectively, the corresponding driving signals are selected by the address setting inside each LED module, the LED modules do not interfere with each other, and the common control signals are shared, so that the multiple LED modules can be connected by the same driving data line and control data line, the failure rate is low, and the wiring is simple. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0035] Figure 1 The structure schematic diagram of the LED display device provided by the embodiment of the present application;

[0036] Figure 2A structural schematic diagram of an LED module of an LED display device provided by an embodiment of the present application is shown in the figure.

[0037] Figure 3 A structural schematic diagram of a driving module of an LED display device provided by an embodiment of the present application is shown in the figure.

[0038] Figure 4 A first circuit diagram of an LED module of an LED display device provided by an embodiment of the present application is shown in the figure.

[0039] Figure 5 A second circuit diagram of an LED module of an LED display device provided by an embodiment of the present application is shown in the figure.

[0040] Explanation of reference numerals:

[0041] 10-LED display device, 101-driving module, 1011-Ethernet unit, 1012-receiving card unit, 102-LED module, 1021-input / output unit, 1022-data selection unit, 1023-bus control unit, 1024-row scanning driving unit, 1025-communication unit, 1026-LED driving unit, 1027-LED lamp group. DETAILED DESCRIPTION

[0042] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0044] The conventional LED display device is generally composed of a plurality of LED display panels, and each LED display panel is composed of a plurality of LED display modules. The connection mode of the plurality of LED display modules generally adopts the mode of sequential connection or star type connection.

[0045] The sequential connection mode refers to that the driving data output by the control panel enters the data input port of the first LED display module, is output from the data output port and is transmitted to the data input port of the next LED display module, thereby being connected in sequence all the time, the wiring is simple and the cost is low. However, the system clock of this connection mode is relatively high, which is not conducive to electromagnetic compatibility of the product; whether the rear-stage LED display module can work normally also depends on the state of the front-stage LED display module, that is, if a LED display module fails, all the LED display modules connected after it will be affected, so the failure rate is high. For small-pitch or micro-pitch products, due to the large amount of data of one LED display module, it is difficult to realize the connection under the limitation of the 25MHz clock frequency of the driving chip.

[0046] The star connection mode refers to that the driving data output by the control panel enters each LED display module and is not output any more and is not connected with other LED display modules, thereby having high reliability. However, this connection mode needs to occupy more system resources than the sequential connection mode because one LED display module needs to occupy at least one group of driving data; meanwhile, each LED display module needs to be connected to the control panel through a data line, thereby leading to complex and messy layout of the wires of the whole box and high cost.

[0047] Therefore, the LED display device provided in the application connects the driving module and the n groups of LED modules by using the control data line and the n driving data lines respectively, selects the corresponding driving signal through the internal address setting of each LED module, does not interfere with each other between the LED modules, shares the common control signal, thereby enabling the multiple LED modules to be connected by using the same driving data line and control data line, reducing the failure rate and simplifying the wiring, taking into account the advantages of the existing connection modes and avoiding the defects of the prior art.

[0048] The LED display device provided in the application will be described by way of example in combination with the accompanying drawings.

[0049] Figure 1 The structure schematic diagram of the LED display device provided in the embodiment of the application is shown in FIG. 1. Figure 1 As shown in FIG. 1, an LED display device 10 includes a driving module 101 and n groups of LED modules 102; wherein n≥1; the driving module 101 is electrically connected with the n groups of LED modules 102 in sequence by using n driving data lines; the driving module 101 is also electrically connected with the n groups of LED modules 102 in sequence by using one control data line; the driving module 101 is configured to generate a common control signal and n groups of driving signals and send them to the n groups of LED modules 102; the LED module 102 is configured to select the corresponding driving signal according to the internal address setting and control the LED lamp group to work according to the common control signal.

[0050] In the embodiment of the present application, the driving module 101 is configured to generate a common control signal and n groups of driving signals, and simultaneously send the common control signal to the n groups of LED modules through one control data line and simultaneously send the n groups of driving signals to the n groups of LED modules through n driving data lines. Thus, each group of LED modules shares the received common control signal, and selects the corresponding driving signal according to the internally pre-set address setting, to drive the corresponding LED light group to emit corresponding light according to the driving signal. The connection mode provided in the embodiment of the present application has the same connection mode of each LED module and the driving module, so that the overall wire layout is simple, and the advantages of the serial connection mode are absorbed. At the same time, each LED module can select the corresponding driving signal, and the advantages of the star connection mode are also absorbed, so that the advantages of the two traditional connection modes are taken into account, and the disadvantages of the two traditional connection modes are avoided, which is more convenient for the later maintenance of the LED display device.

[0051] Figure 2 The structure diagram of the LED module of the LED display device provided in the embodiment of the present application is shown in FIG. 2. As shown in FIG. 2, the LED module 102 includes an input / output unit 1021, a data selection unit 1022 and a bus control unit 1023; the input / output unit 1021 is electrically connected with the data selection unit 1022 and the bus control unit 1023 respectively. The input / output unit 1021 is configured to receive the common control signal and send it to the bus control unit 1023, and receive the n groups of driving signals and send them to the data selection unit 1022; the data selection unit 1022 is configured to select the corresponding driving signal according to the internal address setting; and the bus control unit 1023 is configured to control the LED light group to work according to the common control signal. Figure 2

[0052] In the embodiment of the present application, the input / output unit 1021 is configured to receive the common control signal and the n groups of driving signals sent by the driving module 101, and send the common control signal to the bus control unit 1023 and send the n groups of driving signals to the data selection unit 1022. The data selection unit 1022 is configured to select the corresponding driving signal according to the internal address setting, to drive the LED light group to work and emit light. The address setting can be in the form of pre-set address or in the form of on-site address change, and the address is variable. The bus control unit 1023 is configured to control the LED light group to work according to the common control signal, wherein the common control signal generally includes a clock signal (CLK), a latch signal (LAT), an output enable signal (OE) and a row drive decoding, etc.

[0053] As shown in FIG. 3, the LED display device 100 includes a driving module 101 and n groups of LED modules 102. The driving module 101 is configured to generate a common control signal and n groups of driving signals, and simultaneously send the common control signal to the n groups of LED modules 102 through one control data line and simultaneously send the n groups of driving signals to the n groups of LED modules 102 through n driving data lines. Thus, each group of LED modules 102 shares the received common control signal, and selects the corresponding driving signal according to the internally pre-set address setting, to drive the corresponding LED light group to emit corresponding light according to the driving signal. Figure 2 ​As shown, the LED module 102 exemplarily comprises a row scanning driving unit 1024, a communication unit 1025, an LED driving unit 1026 and an LED lamp group 1027; the row scanning driving unit 1024 and the communication unit 1025 are electrically connected with the input / output unit 1021, the LED driving unit 1026 is electrically connected with the row scanning driving unit 1024, the data selection unit 1022, the bus control unit 1023 and the LED lamp group 1027 respectively; the row scanning driving unit 1024 is configured to control the row / column switch of the LED driving unit 1026 to open or close according to a scanning signal; the communication unit 1025 is configured to interact information with the driving module 101; the LED driving unit 1026 is configured to drive the LED lamp group 1027 to work according to a driving signal and a common control signal; the LED lamp group 1027 is configured to emit light according to the driving signal and the common control signal.

[0054] In the embodiment of the present application, the row scanning driving unit 1024 is used to control the row / column switch of the LED driving unit 1026 to open or close according to a scanning signal, so as to open or close the power supply channel of the LED lamp group 1027. The communication unit 1025 is used to interact information with the driving module 101, and receive the communication signal sent by the driving module 101, such as the correction data signal and the status return light signal. The communication signal of each LED module may be different, so different signal lines are used for connection. The LED driving unit 1026 is used to drive the LED lamp group 1027 to work according to a driving signal and a common control signal. The driving signal is individually corresponding to each LED module 102 and cannot be shared. The common control signal is the same for each LED module 102 and can be shared. The LED lamp group 1027 is used to emit light of corresponding color according to the driving signal and the common control signal.

[0055] Exemplarily, the driving signal comprises a three-primary-color serial driving signal.

[0056] In the embodiment of the present application, the driving signal adopts a three-primary-color serial driving signal, that is, the three-primary-color signals, red signal (Red, R), green signal (Green, G) and blue signal (Blue, B) are transmitted in sequence in the same driving data line, so that the three driving data lines required in the traditional connection mode can be realized by only one driving data line in the embodiment of the present application, the number of driving data lines is reduced by 2 / 3, and the pin occupation of the input / output unit 1021 is greatly reduced.

[0057] Exemplarily, the data selection unit 1022 comprises a data selector or a software program.

[0058] In this embodiment, the data selection unit 1022 can be implemented in hardware, such as a data selector, or in software, such as a software program. Hardware implementations offer higher accuracy and stability, while software implementations are easier to modify and more flexible, allowing users to choose according to their specific application needs.

[0059] Figure 3 This is a schematic diagram of the structure of the driving module of the LED display device provided in an embodiment of this application. Figure 3 As shown, exemplarily, the driving module 101 includes an Ethernet unit 1011 and a receiving card unit 1012; the receiving card unit 1012 is electrically connected to the Ethernet unit 1011 and n sets of LED modules 102 respectively; the Ethernet unit 1011 is configured to interact with a remote terminal; the receiving card unit 1012 is configured to send the common control signal and n sets of driving signals received by the Ethernet unit 1011 to the n sets of LED modules 102 respectively.

[0060] In this embodiment, the Ethernet unit 1011 is used to interact with a remote terminal and receive drive signals and common control signals sent by the remote terminal. The receiving card unit 1012 is used to send the common control signals and n sets of drive signals received by the Ethernet unit 1011 to n sets of LED modules 102 respectively, so that the n sets of LED modules 102 share the common control signals and select the corresponding drive signals according to the internal address settings to drive the LED light group to emit light of the corresponding color.

[0061] Figure 4 This is a first circuit diagram of an LED module for an LED display device provided in an embodiment of this application. (See diagram below.) Figure 4 As shown, exemplarily, the input / output unit 1021 includes a first interface J1; the four drive signal input pins of the first interface J1 are respectively connected to four sets of drive signals (i.e., D1, D2, D3, D4) and electrically connected to the data selection unit 1022, and the three control signal input pins of the first interface J1 are respectively connected to three sets of common control signals (i.e., CLK, OE, LAT signals) and electrically connected to the bus control unit 1023. In addition, the four drive signal input pins of the first interface J1 are also sequentially electrically connected to four resistors (i.e., R1, R2, R3, R4) and four capacitors (C1, C2, C3, C4), and the three control signal input pins of the first interface J1 are also sequentially electrically connected to three resistors (i.e., R5, R6, R7) and three capacitors (C5, C6, C7).

[0062] The data selection unit 1022 comprises a first data selector SW1, four input ends of the first data selector SW1 are connected to four groups of driving signals (i.e. D1, D2, D3, D4) respectively, and an output end (i.e. DI1) of the first data selector SW1 is electrically connected with the bus control unit 1023.

[0063] In the embodiment of the present application, the first interface J1 is used for connecting four groups of driving signals and a common control signal, seven resistors are used for buffering the driving signals and the common control signal input into the first interface J1, and seven capacitors are used for filtering the driving signals and the common control signal input into the first interface J1. In actual application, each first data selector SW1 only turns on one channel, so that one group of driving signals among the four groups of driving signals passes through, and the rest of the data cannot pass through, thereby inputting corresponding driving signals into the LED lamp group 1027, so that the LED module displays correct color and image. The first interface J1 can be a CON12B chip.

[0064] As shown in Figure 4 , exemplarily, the bus control unit 1023 comprises a first bus transceiver U1; one driving signal input pin of the first bus transceiver U1 is electrically connected with the data selection unit 1022, and three control signal input pins of the first bus transceiver U1 are electrically connected with the input / output unit 1021 respectively.

[0065] In the embodiment of the present application, the bus control unit 1023 is used for receiving the driving signals and the common control signal selected by the data selection unit 1022, and sending them to the LED driving unit 1026 together, so as to drive the LED lamp group 1027 to emit light of corresponding color. The first bus transceiver U1 can be a 74HC245 chip.

[0066] Figure 5 A second circuit diagram of the LED module of the LED display device provided in the embodiment of the present application is shown in Figure 5 , exemplarily, the LED driving unit 1026 comprises driving chips (i.e. UR1, UG1 and UG1); input pins of the driving chips are connected to control signals and corresponding driving signals respectively, and output pins of the driving chips are electrically connected with three primary color pins of the LED lamp group 1027. In addition, electrolytic capacitors (i.e. CU2, CU3 and CU3) are connected between power supply pins and ground pins of each driving chip, and resistors (i.e. RR1, RG1 and RB1) are connected between reference voltage output pins of each driving chip and the ground.

[0067] In the embodiment of the present application, the three driving chips (i.e. UR1, UG1 and UG1) respectively receive the driving signals (i.e. three primary color serial driving signals) selected by the data selection unit 1022 and the common control signals (i.e. CLK1, OE1, LAT1 signals) output by the bus control unit 1023, and send the three primary color signals (i.e. R1, G1, B1) corresponding to the first LED lamp bead to the first LED lamp bead, so that the first LED lamp bead emits light; send the three primary color signals (i.e. R2, G2, B2) corresponding to the second LED lamp bead to the second LED lamp bead, so that the second LED lamp bead emits light; send the three primary color signals (i.e. R3, G3, B3) corresponding to the third LED lamp bead to the third LED lamp bead, so that the third LED lamp bead emits light; send the three primary color signals (i.e. R4, G4, B4) corresponding to the fourth LED lamp bead to the fourth LED lamp bead, so that the fourth LED lamp bead emits light. Three resistors are used to buffer the reference voltage, and three electrolytic capacitors are used to filter the power voltage input to the three driving chips. The driving chip can be an ICND2038 type chip.

[0068] Exemplarily, the embodiment of the present application provides a display device, which comprises the LED display device 10.

[0069] In the embodiment of the present application, the driving module and the n groups of LED modules are connected by the control data line and the n driving data lines respectively, the corresponding driving signals are selected by the address setting inside each LED module, the LED modules do not interfere with each other, and the common control signals are shared, so that the multiple LED modules can be connected by the same driving data line and control data line, the failure rate is low, and the wiring is simple.

[0070] It should be understood that the size of the serial number of each step in the above embodiment does not mean the order of execution, the execution order of each process should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0071] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be realized in the form of hardware or software function unit. In addition, the specific name of each functional unit and module is only for the convenience of mutual distinction, and does not limit the protection scope of the present application. The specific working process of the unit and module in the above-mentioned display device can refer to the corresponding process in the foregoing embodiments, which will not be described here.

[0072] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in detail in a certain embodiment can be referred to the related description of other embodiments.

[0073] Those of ordinary skill in the art can realize that the units of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of the present application.

[0074] In the embodiments provided in the present application, it should be understood that the disclosed LED display device can be implemented in other ways. For example, the above-described LED display device embodiments are only schematic, for example, the division of modules or units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another display device, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interface display device, device or unit, which can be electrical, mechanical or other forms.

[0075] The units described as separate components can or can not be physically separated, and the components displayed as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0076] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0077] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. An LED display device, characterized by, The driving module and n groups of LED modules are included, wherein n≥1; The driving module is electrically connected with the n groups of LED modules through n driving data lines in sequence; the driving module is also electrically connected with the n groups of LED modules through a control data line in sequence; The driving module is configured to generate common control signals and n groups of driving signals and send them to the n groups of LED modules; The LED module is configured to select corresponding driving signals according to internal address settings and control LED lamp groups to work according to the common control signals; The LED module includes an input / output unit, a data selection unit and a bus control unit; The input / output unit is electrically connected with the data selection unit and the bus control unit respectively; The input / output unit is configured to receive the common control signals and send them to the bus control unit, and receive n groups of driving signals and send them to the data selection unit; The data selection unit is configured to select corresponding driving signals according to internal address settings; The bus control unit is configured to control the LED lamp groups to work according to the common control signals.

2. The LED display apparatus of claim 1, wherein, The LED module further includes a row scanning driving unit, a communication unit, an LED driving unit and an LED lamp group; The row scanning driving unit and the communication unit are electrically connected with the input / output unit, and the LED driving unit is electrically connected with the row scanning driving unit, the data selection unit, the bus control unit and the LED lamp group respectively; The row scanning driving unit is configured to control the row / column switch of the LED driving unit to open or close according to a scanning signal; The communication unit is configured to interact information with the driving module; The LED driving unit is configured to drive the LED lamp group to work according to the driving signals and the common control signals; The LED lamp group is configured to emit light according to the driving signals and the common control signals.

3. The LED display apparatus of any of claims 1-2, wherein, The driving signals include three primary color serial driving signals.

4. The LED display apparatus of claim 1 or 2, wherein The data selection unit includes a data selector or a software program.

5. The LED display apparatus of any one of claims 1-2, wherein, The driving module includes an Ethernet unit and a receiving card unit; The receiving card unit is electrically connected with the Ethernet unit and the n groups of LED modules respectively; The Ethernet unit is configured to interact information with a remote terminal; The receiving card unit is configured to send the common control signals and n groups of driving signals received by the Ethernet unit to the n groups of LED modules respectively.

6. The LED display apparatus of claim 1, wherein, The input / output unit includes a first interface; Four driving signal input pins of the first interface are connected with four groups of driving signals and electrically connected with the data selection unit, and three control signal input pins of the first interface are connected with three groups of common control signals and electrically connected with the bus control unit.

7. The LED display apparatus of claim 1, wherein, The bus control unit includes a first bus transceiver; One driving signal input pin of the first bus transceiver is electrically connected with the data selection unit, and three control signal input pins of the first bus transceiver are electrically connected with the input / output unit respectively.

8. The LED display apparatus of claim 2, wherein, The LED driving unit comprises a driving chip; Input pins of the driving chip are connected to the control signals and the corresponding driving signals respectively, and output pins of the driving chip are electrically connected to the LED lamp groups.

9. A display device, characterized by An LED display device as claimed in any of claims 1-8.

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