Hard connection type light-emitting diode (LED) display screen to soft connection device

Abstract

The utility model discloses a hard connection type light-emitting diode (LED) display screen to soft connection device, which is applied to an LED display screen of which a module is in hard connection with a lamp panel, and comprises a first adapter plate, a second adapter plate and a flat cable, a first adapter serial port and a second adapter serial port are respectively arranged on two surfaces of the first adapter plate; a third switching serial port and a fourth switching serial port are respectively arranged on two surfaces of the second switching plate; the first switching serial port is electrically connected with the second switching serial port; the third switching serial port is electrically connected with the fourth switching serial port; the first switching serial port is used for being connected with an external module; the second switching serial port is connected with the third switching serial port through a flat cable; the fourth switching serial port is used for being connected with an external lamp panel. According to the device provided by the utility model, a 60-pin-position board-to-board male and female seat is redefined, optimized and switched into a 30-pin-seat flat cable socket, and flat cable transmission is adopted, so that troubleshooting of faults of the hard-connected LED display screen can be realized on site, disassembly and transportation are not needed, and manpower and time for after-sales maintenance are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display screen equipment, in particular to a hard-connection LED display screen to soft-connection device. Background Art

[0002] The hard connection method of LED display refers to the transmission of the signal required for lighting the module through the board-to-board male and female sockets on the module board and the lamp board. Because of its compact structure, convenient installation and transportation, and good stability, it quickly replaced the wired soft connection method. Nowadays, the common LED display screens on the market are all hard-connected products with integrated lamp and driver. However, the hard-connected LED display screen inevitably has an obvious defect, that is, when the module or lamp board fails, it is very difficult to repair it, because the lighting of the LED display screen must rely on the board-to-board male and female sockets on the module board and the lamp board to maintain a good connection. At this time, the module and the lamp board are fitted, and the drive interface and other boards on it are covered. When the module is abnormal, it needs to be repaired and the module can only be disconnected and removed from the LED lamp board for maintenance. However, during the maintenance process, the module needs to be lit from time to time to check the problem point, which is very inconvenient. If you want to make the screen body in the state of lighting and working to perform relevant signal tests and troubleshooting on the module covering surface components, it is impossible to do so.

[0003] Furthermore, the structural specifications of conventional wired soft connection interfaces and flat cables do not match those of conventional hard-connected board-to-board connector interfaces, and the two cannot be directly plugged in; at the same time, the data signal definitions of each pin of the interface are also different, so it is impossible to directly plug a conventional flat cable into a hard-connected interface for use.

[0004] This also makes it difficult to troubleshoot hard-wired modules on-site after a fault occurs. It is often necessary to remove the abnormal module and even the suspected faulty LED light board and send it to the factory for repair, which consumes a lot of manpower and time and increases the cost of after-sales work. Utility Model Content

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a hard-connection LED display screen to soft-connection device.

[0006] The technical solution provided by the utility model is: to provide a hard-connection LED display screen to soft-connection device, which is applied to an LED display screen with a module and a light board hard-connected, comprising: a first adapter board, a second adapter board and a flat cable;

[0007] Preferably, the first adapter serial port and the second adapter serial port are respectively provided on both sides of the first adapter board; the third adapter serial port and the fourth adapter serial port are respectively provided on both sides of the second adapter board; the first adapter serial port and the fourth adapter serial port have the same number of pins; the second adapter serial port and the third adapter serial port have the same number of pins; the first adapter serial port or the fourth adapter serial port has a different number of pins from the second adapter serial port or the third adapter serial port; the first adapter serial port is electrically connected to the second adapter serial port; the third adapter serial port is electrically connected to the fourth adapter serial port; the first adapter serial port is used to connect to an external module; the second adapter serial port is connected to the third adapter serial port through a cable; the fourth adapter serial port is used to connect to an external light board.

[0008] Preferably, the first transfer serial port adopts a 60-pin male socket for corresponding plugging with a 60-pin female socket on the module.

[0009] Preferably, the fourth transfer serial port adopts a 60-pin female socket for corresponding plugging with a 60-pin male socket on the lamp board.

[0010] Preferably, the second serial port adapter and the fourth serial port adapter both use a 30-pin cable connector.

[0011] Preferably, the first transfer serial port and the module are plugged in correspondingly as follows:

[0012] Pins 1, 3, 5, 7, 9, 52, 54, 56, 58 and 60 of the first serial port adapter are all connected to the 5V power supply network VCC;

[0013] Pins 2, 4, 6, 8, 10, 51, 53, 55, 57 and 59 of the first transfer serial port are all connected to the ground terminal GND;

[0014] The 15th, 16th, 21st and 22nd pins of the first transfer serial port correspond to the row decoding signals DA, DB, DC and DD respectively;

[0015] The 17th pin of the first transfer serial port is connected to the display enable signal DOE;

[0016] The 18th pin of the first transfer serial port is connected to the latch signal DLAT;

[0017] The 19th pin of the first transfer serial port is connected to the shift clock signal DCLK;

[0018] The 24th, 25th, 26th, 28th, 29th, 30th, 31st, 32nd, 33rd, 35th, 36th, 37th, 38th, 39th and 40th pins of the first serial port adapter are respectively connected to the color data signals DR1, DG1, DB1, DR2, DG2, DB2, DR3, DG3, DB3, DR4, DG4, DB4, DR5, DG5 and DB5; the 43rd pin of the first serial port adapter is connected to the extended output signal SDI;

[0019] The 44th pin of the first transfer serial port is connected to the expansion enable signal CS;

[0020] The 45th pin of the first transfer serial port is connected to the expansion input signal SDO;

[0021] The 46th pin of the first transfer serial port is connected to the extended clock signal SCK;

[0022] The remaining pins of the first transfer serial port are all NC.

[0023] Preferably, the electrical connection between the first transfer serial port and the second transfer serial port is specifically as follows:

[0024] The pins 1 and 30 of the second transfer serial port are transferred to the 5V power supply network VCC;

[0025] The 2nd and 29th pins of the second transfer serial port are connected to the ground terminal GND; the 3rd, 4th, 8th and 9th pins of the second transfer serial port are connected to the row decoding signals DA, DB, DD and DC respectively; the 5th pin of the second transfer serial port is connected to the display enable signal DOE; the 6th pin of the second transfer serial port is connected to the latch signal DLAT; the 7th pin of the second transfer serial port is connected to the shift clock signal DCLK; the 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th, 18th, 19th, 20th, 21st, 22nd, 23rd and 24th pins of the second transfer serial port are connected to the shift clock signal DCLK; the 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th, 18th, 19th, 20th, 21st, 22nd and 23rd pins of the second transfer serial port are connected to the row decoding signals DA, DB, DD and DC respectively; the 5th pin of the second transfer serial port is connected to the display enable signal DOE; the 6th pin of the second transfer serial port is connected to the latch signal DLAT; the 7th pin of the second transfer serial port is connected to the shift clock signal DCLK; the 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th, 18th, 19th, 20th, 21st, 22nd The pins with numbers 2, 23 and 24 correspond to the transfer color data signals DR1, DG1, DB1, DR2, DG2, DB2, DR3, DG3, DB3, DR4, DG4, DB4, DR5, DG5 and DB5 respectively; the pin with number 25 of the second transfer serial port transfers the extended output signal SDI; the pin with number 26 of the second transfer serial port transfers the extended enable signal CS; the pin with number 27 of the second transfer serial port transfers the extended input signal SDO; the pin with number 28 of the second transfer serial port transfers the extended clock signal SCK;

[0026] Preferably, the flat cable is a 30-pin flexible flat cable.

[0027] Preferably, the electrical connection between the third serial port adapter and the fourth serial port adapter is specifically the reverse connection between the first serial port adapter and the second serial port adapter.

[0028] Preferably, the specific method of correspondingly plugging the fourth adapter serial port into the light board is the reverse plugging of the first adapter serial port into the module.

[0029] The beneficial effects of the utility model are as follows: the utility model patent provides a hard-connected LED display screen to soft-connect device, through which the signal on the LED light board is transferred to the cable for transmission through the second adapter board; the original 60-pin board-to-board male and female sockets are redefined to form the first adapter serial port and the fourth adapter serial port, and the second adapter serial port and the third adapter serial port are formed by optimizing the cable socket converted to a 30-pin socket, so as to achieve the purpose of using the cable to transmit the signal. Only an ordinary 30-pin cable is needed to separate the module from the LED light board and connect the module externally, so as to realize the purpose of lighting the module while repairing and maintaining the module or the LED adapter board, and convert the hard connection method that is difficult to repair and maintain into a soft connection method that is convenient for repair and maintenance, solving the pain point of the difficulty of after-sales repair and maintenance of the hard connection module, and the device can be used on the main body of the on-site LED display screen for fault troubleshooting without disassembly, saving manpower and time for after-sales maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a working schematic diagram of a hard-connection LED display screen to soft-connection device of the utility model;

[0032] Figure 2 It is a schematic diagram of the pin definition structure of the first transfer serial port or the fourth transfer serial port of a hard-connected LED display screen to soft-connected device of the utility model;

[0033] Figure 3 It is a schematic diagram of the pin definition structure of the second transfer serial port or the third transfer serial port of a hard-connected LED display screen to soft-connected device of the utility model; DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model clearer, the following will refer to the drawings in the embodiments of the utility model to clearly and completely describe the technical solution of the utility model through the implementation method. Obviously, the described embodiments are 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.

[0035] Reference Figures 1 to 3 , the preferred embodiment of the utility model provides a hard-connection LED display screen to soft-connection device, which is applied to an LED display screen with a hard connection between a module and a light board, comprising: a first adapter board, a second adapter board and a flat cable;

[0036] In a preferred embodiment, a first adapter serial port and a second adapter serial port are respectively provided on both sides of the first adapter board; a third adapter serial port and a fourth adapter serial port are respectively provided on both sides of the second adapter board; the first adapter serial port and the fourth adapter serial port have the same number of pins; the second adapter serial port and the third adapter serial port have the same number of pins; the first adapter serial port or the fourth adapter serial port has a different number of pins from the second adapter serial port or the third adapter serial port; the first adapter serial port is electrically connected to the second adapter serial port; the third adapter serial port is electrically connected to the fourth adapter serial port; the first adapter serial port is used to connect to an external module; the second adapter serial port is connected to the third adapter serial port through a cable; the fourth adapter serial port is used to connect to an external light board.

[0037] In a preferred embodiment, the first transfer serial port adopts a 60-pin male socket for corresponding plugging with a 60-pin female socket on the module.

[0038] In a preferred embodiment, the fourth transfer serial port adopts a 60-pin female socket for corresponding plugging with a 60-pin male socket on the lamp board.

[0039] In a preferred embodiment, the second serial port adapter and the fourth serial port adapter both use a 30-pin header.

[0040] In a preferred embodiment, the first serial port and the module are plugged in correspondingly as follows:

[0041] Pins 1, 3, 5, 7, 9, 52, 54, 56, 58 and 60 of the first serial port adapter are all connected to the 5V power supply network VCC;

[0042] Pins 2, 4, 6, 8, 10, 51, 53, 55, 57 and 59 of the first transfer serial port are all connected to the ground terminal GND;

[0043] The 15th, 16th, 21st and 22nd pins of the first transfer serial port correspond to the row decoding signals DA, DB, DC and DD respectively;

[0044] The 17th pin of the first transfer serial port is connected to the display enable signal DOE;

[0045] The 18th pin of the first transfer serial port is connected to the latch signal DLAT;

[0046] The 19th pin of the first transfer serial port is connected to the shift clock signal DCLK;

[0047] The 24th, 25th, 26th, 28th, 29th, 30th, 31st, 32nd, 33rd, 35th, 36th, 37th, 38th, 39th and 40th pins of the first serial port adapter are respectively connected to the color data signals DR1, DG1, DB1, DR2, DG2, DB2, DR3, DG3, DB3, DR4, DG4, DB4, DR5, DG5 and DB5; the 43rd pin of the first serial port adapter is connected to the extended output signal SDI;

[0048] The 44th pin of the first transfer serial port is connected to the expansion enable signal CS;

[0049] The 45th pin of the first transfer serial port is connected to the expansion input signal SDO;

[0050] The 46th pin of the first transfer serial port is connected to the extended clock signal SCK;

[0051] The remaining pins of the first transfer serial port are all NC.

[0052] In a preferred embodiment, the electrical connection between the first transfer serial port and the second transfer serial port is specifically as follows: the pins No. 1 and No. 30 of the second transfer serial port are connected to the 5V power supply network VCC; the pins No. 2 and No. 29 of the second transfer serial port are connected to the ground terminal GND; the pins No. 3, 4, 8 and 9 of the second transfer serial port are connected to the row decoding signals DA, DB, DD and DC respectively; the pin No. 5 of the second transfer serial port is connected to the display enable signal DOE; the pin No. 6 of the second transfer serial port is connected to the latch signal DLAT; the pin No. 7 of the second transfer serial port is connected to the shift clock signal DCLK; the pins No. 10, 11, 12 and 13 of the second transfer serial port are connected to the shift clock signal DCLK; the pins No. 11, 13 and 14 of the second transfer serial port are connected to the shift clock signal DCLK; the pins No. 11, 14 and 15 of the second transfer serial port are connected to the shift clock signal DCLK; the pins No. 11, 15 and 16 of the second transfer serial port are connected to the shift clock signal DCLK; the pins No. 11, 16 and 17 of the second transfer serial port are connected to the shift clock signal DCLK; the pins No. 11, 17 and 18 of the second transfer serial port are connected to the shift clock signal DCLK; the pins No. 11, 18 and 19 of the second transfer serial port are connected to the shift clock signal DCLK; the pins No. 11, 19 and 1 .... The pins with numbers 2, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 and 24 respectively correspond to the transfer of color data signals DR1, DG1, DB1, DR2, DG2, DB2, DR3, DG3, DB3, DR4, DG4, DB4, DR5, DG5 and DB5; the pin with number 25 of the second transfer serial port transfers the expansion output signal SDI; the pin with number 26 of the second transfer serial port transfers the expansion enable signal CS; the pin with number 27 of the second transfer serial port transfers the expansion input signal SDO; the pin with number 28 of the second transfer serial port transfers the expansion clock signal SCK;

[0053] In a preferred embodiment, the flat cable is a 30-pin flexible flat cable.

[0054] In a preferred embodiment, the electrical connection between the third transfer serial port and the fourth transfer serial port is specifically the reverse connection between the first transfer serial port and the second transfer serial port. Specifically, the 1st and 30th pins of the third transfer serial port are connected to the 5V power supply network VCC; the 2nd and 29th pins of the third transfer serial port are connected to the ground terminal GND; the 3rd, 4th, 8th and 9th pins of the third transfer serial port are connected to the row decoding signals DA, DB, DD and DC respectively; the 5th pin of the third transfer serial port is connected to the display enable signal DOE; the 6th pin of the third transfer serial port is connected to the latch signal DLAT; the 7th pin of the third transfer serial port is connected to the shift clock signal DCLK; the 10th, 11th, 12th, 13th, 14th, 15th and 16th pins of the third transfer serial port are connected to the shift clock signal DCLK; the 10th, 11th, 12th, 13th, 14th, 15th and 16th pins of the third transfer serial port are connected to the shift clock signal DCLK; the 10th, 11th, 12th, 13th, 14th, 15th and 16th pins of the third transfer serial port are connected to the shift clock signal DCLK. The pins with numbers 17, 18, 19, 20, 21, 22, 23 and 24 respectively correspond to the transferred color data signals DR1, DG1, DB1, DR2, DG2, DB2, DR3, DG3, DB3, DR4, DG4, DB4, DR5, DG5 and DB5; the pin with number 25 of the third transferred serial port is transferred to the extended output signal SDI; the pin with number 26 of the third transferred serial port is transferred to the extended enable signal CS; the pin with number 27 of the third transferred serial port is transferred to the extended input signal SDO; the pin with number 28 of the third transferred serial port is transferred to the extended clock signal SCK;

[0055] In a preferred embodiment, the specific method of correspondingly plugging the fourth adapter serial port and the light board is the reverse plugging of the first adapter serial port and the module. Specifically:

[0056] The pins 1, 3, 5, 7, 9, 52, 54, 56, 58 and 60 of the fourth transfer serial port are all connected to the 5V power supply network VCC;

[0057] The pins No. 2, 4, 6, 8, 10, 51, 53, 55, 57 and 59 of the fourth transfer serial port are all connected to the ground terminal GND;

[0058] The 15th, 16th, 21st and 22nd pins of the fourth transfer serial port correspond to the row decoding signals DA, DB, DC and DD respectively;

[0059] The 17th pin of the fourth transfer serial port is connected to the display enable signal DOE;

[0060] The 18th pin of the fourth transfer serial port is connected to the latch signal DLAT;

[0061] The 19th pin of the fourth transfer serial port is connected to the shift clock signal DCLK;

[0062] The 24th, 25th, 26th, 28th, 29th, 30th, 31st, 32nd, 33rd, 35th, 36th, 37th, 38th, 39th and 40th pins of the fourth serial port adapter are respectively connected to the color data signals DR1, DG1, DB1, DR2, DG2, DB2, DR3, DG3, DB3, DR4, DG4, DB4, DR5, DG5 and DB5; the 43rd pin of the fourth serial port adapter is connected to the extended output signal SDI;

[0063] The 44th pin of the fourth transfer serial port is connected to the expansion enable signal CS;

[0064] The 45th pin of the fourth transfer serial port is connected to the expansion input signal SDO;

[0065] The 46th pin of the fourth transfer serial port is connected to the extended clock signal SCK;

[0066] The remaining pins of the fourth transfer serial port are all empty pins NC.

[0067] This utility model patent provides a hard-connected LED display screen to soft-connect device, through which the signal on the LED light board is transferred to the cable for transmission through the second adapter board; the original 60-pin board-to-board male and female sockets are redefined to form the first adapter serial port and the fourth adapter serial port, and the second and third adapter serial ports are formed by optimizing the cable socket converted to a 30-pin socket, so as to achieve the purpose of using the cable to transmit the signal. Only an ordinary 30-pin cable is needed to separate the module from the LED light board and connect the module to the outside, so as to realize the purpose of lighting the module and repairing and maintaining the module or the LED adapter board at the same time, and convert the hard connection method that is difficult to repair and maintain to a soft connection method that is convenient for repair and maintenance, solving the pain point of the hard connection module after-sales repair and maintenance. The device can be used on the main body of the on-site LED display screen for fault detection without disassembly, saving manpower and time for after-sales maintenance.

[0068] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0069] In the description of the present utility model, unless otherwise clearly defined, words such as "setting" should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above words in the present utility model in combination with the specific content of the technical solution.

[0070] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A hard-connection LED display screen to soft-connection device, applied to LED display screens with hard connections between modules and light panels, characterized in that: include: A first adapter board, a second adapter board and a flat cable; The first adapter board is provided with a first adapter serial port and a second adapter serial port on two sides thereof; The second adapter board is provided with a third adapter serial port and a fourth adapter serial port on both sides thereof; The first serial port adapter has the same number of pins as the fourth serial port adapter; The second serial port has the same number of pins as the third serial port. The first or fourth serial port adapter has a different number of pins from the second or third serial port adapter; The first serial port is electrically connected to the second serial port; The third serial port is electrically connected to the fourth serial port. The first serial port is used to connect to the external module; The second serial port adapter is connected to the third serial port adapter via the flat cable; The fourth transfer serial port is used to connect to the external light board.

2. A hard-connection LED display screen to soft-connection device according to claim 1, characterized in that: The first transfer serial port adopts a 60-pin male socket, which is used for corresponding plugging with the 60-pin female socket on the module.

3. The hard-connection LED display screen to soft-connection device according to claim 2, characterized in that: The fourth transfer serial port adopts a 60-pin female socket, which is used for corresponding plugging with the 60-pin male socket on the lamp board.

4. The hard-connection LED display screen to soft-connection device according to claim 3, characterized in that: The second serial port adapter and the fourth serial port adapter both use a 30-pin wiring socket.

5. The hard-connection LED display screen to soft-connection device according to claim 4, characterized in that: The first serial port is plugged into the module in the following way: Pins 1, 3, 5, 7, 9, 52, 54, 56, 58 and 60 of the first serial port adapter are all connected to a 5V power supply network VCC; The pins No. 2, 4, 6, 8, 10, 51, 53, 55, 57 and 59 of the first serial port are all connected to the ground terminal GND; The pins No. 15, 16, 21 and 22 of the first serial port correspond to the line decoding signals DA, DB, DC and DD respectively; The 17th pin of the first transfer serial port is connected to a display enable signal DOE; The 18th pin of the first serial port is connected to a latch signal DLAT; The 19th pin of the first transfer serial port is connected to the shift clock signal DCLK; The pins No. 24, 25, 26, 28, 29, 30, 31, 32, 33, 35, 36, 37, 38, 39 and 40 of the first serial port are respectively connected to the color data signals DR1, DG1, DB1, DR2, DG2, DB2, DR3, DG3, DB3, DR4, DG4, DB4, DR5, DG5 and DB5; The 43rd pin of the first transfer serial port is connected to the expansion output signal SDI; The 44th pin of the first transfer serial port is connected to the expansion enable signal CS; The 45th pin of the first transfer serial port is connected to the expansion input signal SDO; The 46th pin of the first transfer serial port is connected to the extended clock signal SCK; The remaining pins of the first transfer serial port are all empty pins NC.

6. The hard-connection LED display screen to soft-connection device according to claim 5, characterized in that: The electrical connection between the first transfer serial port and the second transfer serial port is specifically as follows: The pins No. 1 and No. 30 of the second serial port are connected to the 5V power supply network VCC; The 2nd and 29th pins of the second serial port are connected to the ground terminal GND; The pins No. 3, 4, 8 and 9 of the second transfer serial port correspond to the transfer row decoding signals DA, DB, DD and DC respectively; The 5th pin of the second transfer serial port is connected to the display enable signal DOE; The 6th pin of the second transfer serial port transfers the latch signal DLAT; The 7th pin of the second transfer serial port transfers the shift clock signal DCLK; The pins No. 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 and 24 of the second transfer serial port correspond to the transfer color data signals DR1, DG1, DB1, DR2, DG2, DB2, DR3, DG3, DB3, DR4, DG4, DB4, DR5, DG5 and DB5 respectively; The 25th pin of the second transfer serial port transfers and expands the output signal SDI; The 26th pin of the second transfer serial port is connected to the expansion enable signal CS; The 27th pin of the second transfer serial port is used to transfer the extended input signal SDO; The 28th pin of the second transfer serial port transfers the extended clock signal SCK.

7. The hard-connection LED display screen to soft-connection device according to claim 5, characterized in that: The flat cable is a 30-pin flat cable.

8. The hard-connection LED display screen to soft-connection device according to claim 5, characterized in that: The electrical connection between the third serial port adapter and the fourth serial port adapter is specifically a reverse connection between the first serial port adapter and the second serial port adapter.

9. The hard-connection LED display screen to soft-connection device according to claim 6, characterized in that: The specific manner of correspondingly plugging the fourth adapter serial port into the lamp board is the reverse plugging of the first adapter serial port into the module.

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