Driving system for LED display screen

Abstract

The utility model relates to the technical field of LED (light-emitting diode) screens, in particular to a driving system for an LED display screen, which comprises a driving circuit arranged on a PCB (printed circuit board) substrate of the LED display screen and used for driving an LED wafer; the driving circuit comprises a driving IC and an LED driving circuit; the LED driving circuit comprises a plurality of LED driving row tubes MOS (Metal Oxide Semiconductor) which are arranged in an array; the light-emitting diodes are arranged on the LED driving row tube MOS, the LED wafer is located in the light-emitting diodes, one red light-emitting diode, one green light-emitting diode and one blue light-emitting diode are combined into one pixel, and the light-emitting diodes of the pixels share the same pole; the driving IC comprises a row driving circuit and a constant current driving circuit; the row driving chips of the row driving circuit are grouped and connected in series to form the row driving circuit which is connected with the LED driving row tube MOS; the LED display PWM driving chips of the constant current driving circuit are grouped and connected in series to form the constant current driving circuit which is connected with the LED driving row tube MOS, so that the driving effect of the LED display screen is guaranteed, the energy consumption is saved, the structure is simple, and the production is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of LED screens, and specifically to a driving system for an LED display screen. Background Art

[0002] LED display screens are widely used in many fields such as billboards, stage backgrounds, stadiums, and public transportation. One of the core components of an LED display screen is the driving system, which is responsible for converting the image signals from a computer or other signal sources into images on the LED display screen.

[0003] The driving system can control the current of each LED, ensuring color consistency and brightness stability, and guaranteeing the display effect of the LED display screen. The existing driving systems for LED display screens have high energy consumption, and some circuit structures are complex, which is not convenient for production. Summary of the Utility Model

[0004] The utility model aims to provide a driving system for an LED display screen, which can save energy consumption while ensuring the driving effect of the LED display screen, and has a simple structure and is convenient for production.

[0005] The utility model provides the following basic solution: A driving system for an LED display screen, comprising: a driving circuit;

[0006] The driving circuit is used to drive the LED display screen, wherein the LED display screen comprises: a plurality of LED lamp boards;

[0007] The LED lamp board comprises: a PCB substrate;

[0008] A plurality of LED chips are arranged on the top surface of the PCB substrate;

[0009] The driving circuit is arranged on the PCB substrate and is used to drive the LED chips;

[0010] The driving circuit comprises: a driving IC and an LED driving circuit;

[0011] The LED driving circuit comprises: a plurality of LED driving row transistors MOS arranged in an array;

[0012] Light-emitting diodes are arranged on the LED driving row transistors MOS, and the LED chips are located in the light-emitting diodes; The LED chips comprise: red light-emitting diodes, green light-emitting diodes, and blue light-emitting diodes. One red light-emitting diode, one green light-emitting diode, and one blue light-emitting diode are combined into one pixel. The light-emitting diodes of one pixel are of the same polarity, including: common cathode or common anode;

[0013] The driving IC comprises: a row driving circuit and a constant current driving circuit;

[0014] The row driving circuit includes: a plurality of row driving chips; a plurality of row driving chips are grouped and connected in series to form a row driving circuit, and the interfaces above the LED driving row transistor MOS in the same column are connected to the output interfaces of the row driving chips in the same group of the row driving circuit.

[0015] The constant current driving circuit includes: a plurality of LED display PWM driving chips; a plurality of LED display PWM driving chips are grouped and connected in series to form a constant current driving circuit, and the interfaces corresponding to the light-emitting diodes of the same color below the LED driving row transistor MOS in the same column are connected to the output interfaces of the LED display PWM driving chips in the same group of the constant current driving circuit.

[0016] Furthermore, the LED driving circuit is arranged on the side of the PCB substrate where the LED wafers are installed, and the driving IC is arranged on the other side of the PCB substrate.

[0017] Furthermore, the light-emitting diodes of one pixel are arranged side by side and in a cycle on the LED driving row transistor MOS, and the positive and negative electrodes respectively correspond to different interfaces of the LED driving row transistor MOS.

[0018] Furthermore, 15 pixels of light-emitting diodes are arranged on one LED driving row transistor MOS.

[0019] Furthermore, the row driving circuit is provided with eight row driving chips; four row driving chips are in a group and connected in series, the DOUT interface of one row driving chip is connected to the DIN interface of the next row driving chip, and for two groups of serially connected row driving chips, the output interface of the first group is connected to the interface above the LED driving row transistor MOS in the first column; the output interface of the second group is connected to the interface above the LED driving row transistor MOS in the second column.

[0020] Furthermore, the constant current driving circuit is provided with fifty-four LED display PWM driving chips, nine chips in a group and connected in series, the SDO interface of one LED display PWM driving chip is connected to the SDI interface of the next LED display PWM driving chip; six groups of serially connected LED display PWM driving chips; the output interface of the first group is connected to the interface corresponding to the green light-emitting diode below the LED driving row transistor MOS in the first column; the output interface of the second group is connected to the interface corresponding to the red light-emitting diode below the LED driving row transistor MOS in the first column; the output interface of the third group is connected to the interface corresponding to the blue light-emitting diode below the LED driving row transistor MOS in the first column; the output interface of the fourth group is connected to the interface corresponding to the green light-emitting diode below the LED driving row transistor MOS in the first column; the output interface of the fifth group is connected to the interface corresponding to the red light-emitting diode below the LED driving row transistor MOS in the first column; the output interface of the sixth group is connected to the interface corresponding to the blue light-emitting diode below the LED driving row transistor MOS in the first column.

[0021] Furthermore, the driving IC further includes: a FLASH circuit;

[0022] The FLASH circuit includes: a first driver, a low-dropout regulator, and a FLASH flash memory;

[0023] The first driver, the low-dropout regulator, and the FLASH flash memory are interconnected to form a FLASH circuit.

[0024] Furthermore, the driving IC further includes: an interface control circuit;

[0025] The interface control circuit includes: a pin connector and a plurality of second drivers;

[0026] A plurality of second drivers are all connected to the pin connector, and the first driver is also connected to the pin connector.

[0027] Furthermore, the driving IC further includes: an EMC filtering circuit;

[0028] The EMC filtering circuit includes: a plurality of parallel capacitors connected to the VR interface and the GND interface of the pin connector for filtering.

[0029] Advantages of this solution: In this solution, the LED chip includes light-emitting diodes of three primary colors. One red light-emitting diode, one green light-emitting diode, and one blue light-emitting diode are combined into one pixel. The light-emitting diodes of one pixel are of the same polarity, including: common cathode or common anode. A common cathode or common anode compatible design is adopted. Different driving is achieved by replacing the driving IC, which can ensure the driving effect and save energy consumption;

[0030] The driving circuit includes: a driving IC and an LED driving circuit; wherein the LED driving circuit includes: a plurality of LED driving row MOS transistors arranged in an array; the driving IC includes: a row driving circuit and a constant current driving circuit; the row driving circuit includes: a plurality of row driving chips; a plurality of row driving chips are grouped in series to form a row driving circuit. The interfaces above the LED driving row MOS transistors in the same column are connected to the output interfaces of the row driving chips in the same group of the row driving circuit; the constant current driving circuit includes: a plurality of LED display PWM driving chips; a plurality of LED display PWM driving chips are grouped in series to form a constant current driving circuit. The interfaces corresponding to the light-emitting diodes of the same color below the LED driving row MOS transistors in the same column are connected to the output interfaces of the LED display PWM driving chips in the same group of the constant current driving circuit; the overall structure layout is simple, the connection is convenient, and it is convenient for production. Description of the Drawings

[0031] Figure 1 It is a logic block diagram of an embodiment of the driving system for an LED display screen of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the LED lamp board in the embodiment of the driving system for the LED display screen of the present utility model;

[0033] Figure 3 This is a schematic diagram of the array setting of the LED driving row transistor MOS in the embodiment of the driving system for the LED display screen of the present utility model;

[0034] Figure 4 This is a circuit diagram of the first three rows of the first column of LED lamp boards in the embodiment of the driving system for the LED display screen of the present utility model;

[0035] Figure 5 This is a circuit diagram of the first three rows of the second column of LED lamp boards in the embodiment of the driving system for the LED display screen of the present utility model;

[0036] Figure 6 This is a circuit diagram of the first group of row driving chips in the embodiment of the driving system for the LED display screen of the present utility model;

[0037] Figure 7 This is a circuit diagram of the second group of row driving chips in the embodiment of the driving system for the LED display screen of the present utility model;

[0038] Figure 8 This is a schematic diagram of the array setting of the PWM driving chips of the LED display in the embodiment of the driving system for the LED display screen of the present utility model;

[0039] Figure 9 This is a circuit diagram of the PWM driving chips of the LED display in the first two rows of the first three columns in the embodiment of the driving system for the LED display screen of the present utility model;

[0040] Figure 10 This is a circuit diagram of the FLASH circuit in the embodiment of the driving system for the LED display screen of the present utility model;

[0041] Figure 11 This is a circuit diagram of the pin connector in the embodiment of the driving system for the LED display screen of the present utility model;

[0042] Figure 12 This is a circuit diagram of the second driver in the embodiment of the driving system for the LED display screen of the present utility model;

[0043] Figure 13 This is a circuit diagram of the second driver in series with an inductor and a capacitor in the embodiment of the driving system for the LED display screen of the present utility model;

[0044] Figure 14This is the circuit diagram of the EMC filter circuit in the embodiment of the driving system for an LED display of the present utility model; Detailed implementation manners

[0045] The following is a further detailed description through specific implementation manners:

[0046] The reference numerals in the accompanying drawings of the specification include: PCB substrate 1, LED chip 2, transparent adhesive layer 3, film layer 4, and driving circuit 5.

[0047] In the description of the present application, unless otherwise clearly specified and defined, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; unless otherwise specified or stated, the term "plural" means two or more; the terms "connection", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0048] In the description of this specification, it should be understood that the orientation terms such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described from the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that one element is connected to another element "above", "below", "left", or "right", it can not only be directly connected to another element "above", "below", "left", or "right", but also be indirectly connected to another element "above", "below", "left", or "right" through an intermediate element.

[0049] The embodiment is basically as shown in the appended Figure 1 drawing: A driving system for an LED display, including: a driving circuit 5;

[0050] The driving circuit 5 is used to drive the LED display, where the LED display includes: a plurality of LED lamp boards;

[0051] The LED lamp board includes: a PCB substrate 1, as Figure 2 shown;

[0052] On the top surface of the PCB substrate 1, a plurality of LED chips 2 are provided, and a transparent adhesive layer 3 is provided to seal and protect the LED chips 2; among them, the LED chips 2 are flip-chip LED chips 2 and are fixedly installed on the PCB substrate 1 by means of solder paste welding. In this embodiment, LEDs with a size of 3x6 mil are used; the transparent adhesive layer 3 encapsulates the LED chips 2 with a molded epoxy glue, with a light transmittance greater than 80%, a thickness of 200 microns, and a bright surface, which plays a role in sealing and protection;

[0053] Three LED chips 2 of different colors form a group, and the LED chips 2 in a group share the same electrode, including: common cathode or common anode;

[0054] The LED chips 2 include: red LED chips 2, green LED chips 2, and blue LED chips 2; one red LED chip 2, one green LED chip 2, and one blue LED chip 2 form a group of LED chips 2, and the LED chips 2 in a group share the same electrode, including: common cathode or common anode;

[0055] A film layer 4 is provided on the transparent adhesive layer 3; the light transmittance of the film layer 4 is about 40%, the thickness is 90 microns, and the film is anti-fingerprint, anti-reflection, and scratch-resistant. The film layer 4 can solve the problem of ink color consistency;

[0056] A driving circuit 5 is also provided on the PCB substrate 1 for driving the LED chips 2;

[0057] The driving circuit 5 includes: a driving IC and an LED driving circuit 5;

[0058] The LED driving circuit 5 is arranged on the side of the PCB substrate 1 where the LED chips 2 are installed, and the driving IC is arranged on the other side of the PCB substrate 1; the driving IC and the LED driving circuit are both provided with pads on the PCB substrate and are connected to the PCB substrate by means of solder paste welding, so as to be connected through the PCB substrate;

[0059] The LED driving circuit 5 includes: a number of LED driving line transistors MOS;

[0060] The light-emitting diodes are arranged on the LED driving line transistors MOS, and the LED chips 2 are located in the light-emitting diodes; the LED chips 2 include: red light-emitting diodes, green light-emitting diodes, and blue light-emitting diodes. One red light-emitting diode, one green light-emitting diode, and one blue light-emitting diode are combined into one pixel, and the light-emitting diodes of one pixel are set with common cathode or common anode;

[0061] The light-emitting diodes of one pixel are arranged side by side in a cycle on the LED driving line transistors MOS. The light-emitting diodes of one pixel are red light-emitting diodes, green light-emitting diodes, and blue light-emitting diodes, arranged side by side in a cycle, and the positive and negative electrodes respectively correspond to different interfaces of the LED driving line transistors MOS. Specifically, as Figure 4 shown, 15 groups of three-primary-color light-emitting diodes are arranged on one LED driving line transistor MOS;

[0062] In this embodiment, the array is provided with 18 LED driving line transistors MOS, two LED driving line transistors MOS are arranged in one row, and 9 LED driving line transistors MOS are arranged in one column. As Figure 3 shown, the specific numbering sequence is asFigure 4 and Figure 5 as shown Figure 4 is the MOS of the LED driving row transistors in the first three rows of the first column, Figure 5 and is the MOS of the LED driving row transistors in the first three rows of the second column;

[0063] The driving IC includes: a row driving circuit 5, a constant current driving circuit 5, a FLASH circuit, an interface control circuit, and an EMC filtering circuit;

[0064] The row driving circuit 5 includes: a plurality of row driving chips;

[0065] A plurality of row driving chips are grouped and connected in series to form the row driving circuit 5. The interfaces above the LED driving row transistors in the same column are connected to the output interfaces of the row driving chips in the same group of the row driving circuit 5;

[0066] Specifically, in this embodiment, eight row driving chips are provided, four in a group, and connected in series. The DOUT interface of one row driving chip is connected to the DIN(C) interface of the next row driving chip. For the two groups of serially connected row driving chips, the output interface of the first group is connected to the interface above the LED driving row transistors in the first column; the output interface of the second group is connected to the interface above the LED driving row transistors in the second column; specifically, see the attached Figure 6 and 7 interface numbers. If the interface numbers are the same, it means the two interfaces are connected; among them Figure 6 and Figure 7 are the first group and the second group respectively;

[0067] The constant current driving circuit 5 includes: a plurality of LED display PWM driving chips; in this embodiment, a PWM constant current output LED common cathode driving chip is used, such as CND2069 SSOP24-0.635;

[0068] A plurality of LED display PWM driving chips are grouped and connected in series to form the constant current driving circuit 5. The interfaces corresponding to the light emitting diodes of the same color below the LED driving row transistors in the same column are connected to the output interfaces of the LED display PWM driving chips in the same group of the constant current driving circuit 5;

[0069] Specifically, as shown in Figure 8 and Figure 9As shown in the figure, in this embodiment, fifty-four LED display PWM driver chips are set, with nine chips in a group and connected in series. The SDO interface of one LED display PWM driver chip is connected to the SDI interface of the next LED display PWM driver chip; six groups of serially connected LED display PWM driver chips; the output interface of the first group is connected to the interface corresponding to the green light-emitting diode at the lower part of the LED driving row transistor MOS in the first column; the output interface of the second group is connected to the interface corresponding to the red light-emitting diode at the lower part of the LED driving row transistor MOS in the first column; the output interface of the third group is connected to the interface corresponding to the blue light-emitting diode at the lower part of the LED driving row transistor MOS in the first column; the output interface of the fourth group is connected to the interface corresponding to the green light-emitting diode at the lower part of the LED driving row transistor MOS in the first column; the output interface of the fifth group is connected to the interface corresponding to the red light-emitting diode at the lower part of the LED driving row transistor MOS in the first column; the output interface of the sixth group is connected to the interface corresponding to the blue light-emitting diode at the lower part of the LED driving row transistor MOS in the first column; among them Figure 9 For the LED display PWM driver chips in the first two rows of the first three columns, the numbering rule is as Figure 9 shown;

[0070] The FLASH circuit includes: a first driver, a low-dropout voltage regulator, and a FLASH flash memory; in this embodiment, the first driver uses a 74HC245 chip, the low-dropout voltage regulator uses a 1117-3.3, and the FLASH flash memory uses a W25Q32;

[0071] The first driver, the low-dropout voltage regulator, and the FLASH flash memory are interconnected to form a FLASH circuit;

[0072] Specifically, the VIN interface of the low-dropout voltage regulator is connected to the VCC interface of the first driver;

[0073] The OUT1 interface of the low-dropout voltage regulator is connected to the VCC0 interface, VCC1 interface, and VCC2 interface of the FLASH flash memory;

[0074] The B4 interface of the first driver is connected to the DATA interface of the FLASH flash memory;

[0075] The A5 interface, A6 interface, and A7 interface of the first driver are respectively connected to the nCS interface, DCLK interface, and ASDI interface of the FLASH flash memory through resistor R103, resistor R102, and resistor R100, and the interfaces are all grounded, as Figure 10 shown;

[0076] The interface control circuit includes: a pin connector and several second drivers;

[0077] A number of second drivers are all connected to the pin connector, and the first driver is also connected to the pin connector, as Figure 11 shown;

[0078] In this embodiment, the pin connector adopts HEADER_32x2, and the second driver adopts the 74HC245 chip, as Figure 12 shown;

[0079] The A4 interface, B5 interface, B6 interface, and B7 interface of the first driver are respectively connected to the 39 interface, 40 interface, 46 interface, and 45 interface of the pin connector;

[0080] There are four second drivers, all of which are connected to the pin connector, and each second driver is connected to a grounding circuit; inductors and capacitors are connected in series to the DCLK1 interface, DCLK2 interface, DCLK3 interface, DCLK4 interface, DCLK5 interface, and DCLK6 interface of the second driver, and the other ends are grounded; inductors and capacitors are connected in series to the DOE1 interface, DOE2 interface, DOE3 interface, DOE4 interface, DOE5 interface, and DOE6 interface of the second driver, and the other ends are grounded; inductors and capacitors are connected in series to the DLAT1 interface, DLAT2 interface, DLAT3 interface, DLAT4 interface, DLAT5 interface, and DLAT6 interface of the second driver, and the other ends are grounded, as Figure 13 shown.

[0081] The EMC filter circuit includes: a number of parallel capacitors, which are connected to the VR interface and GND interface of the pin connector for filtering, as Figure 14 shown.

[0082] When designing the LED light board, first determine the target brightness N of the LED display screen. 1.3 times of N is the designed brightness N1 of the LED light board, where the extra 30% is reserved for correcting brightness attenuation; determine the design of the scanning number according to N1; the larger the scanning number, the fewer times the LED is cyclically lit per second, and the lower the brightness. Taking P1.25 as an example, if the brightness of N1 is 600 nit, the scanning number needs to reach within 64 scans.

[0083] According to the pixel resolution of the LED light board, determine how many driving scan areas are divided. For example, the resolution of a single P1.25 light board is 120x135; there are 2 optional scanning schemes: 60 scans, 2 scanning areas and 45 scans, 3 scanning areas. The number of pixel points driven by a single channel of the line driving IC is preferably controlled at about 130 points.

[0084] Attention should be paid when laying out the driving IC. The power signal interface should be placed as close as possible to the center of the LED light board to ensure that the line lengths in each area are equal, the attenuated voltages are equal, and brightness differences caused by inconsistent voltage attenuation are avoided. The position of each IC should be placed at the center of the area where the LED chips 2 to be controlled are located, ensuring that the wiring lengths from the IC to each LED chip 2 are equal, reducing signal delay and voltage attenuation, and ensuring brightness consistency.

[0085] The design of the EMC filtering circuit needs to comply with the 3W20H principle. It is advisable to use an RC filtering circuit near the interface circuit to filter high-speed DATA, CLK, LAT, and OE signals and reduce radiation.

[0086] The FLASH circuit is connected to the signal connector of the external system. The interface control circuit and the EMC filtering circuit are connected in series between the signal connector and the row driving circuit / constant current driving circuit. The connection interface is directly conducted through copper wires and is not a standard general interface.

[0087] The side of the LED light board is sprayed with black ink to ensure the black consistency after the LED light boards are spliced.

[0088] The above are only embodiments of the present utility model. Specific structures and common knowledge such as characteristics that are well-known in the art are not described in detail here. Those of ordinary skill in the art know all the common technical knowledge in the technical field to which the utility model belongs before the application date or the priority date, can learn all the existing technologies in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, improve and implement this solution in combination with their own abilities. Some typical well-known structures or well-known methods should not become obstacles for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A driving system for an LED display screen, characterized in that, Comprising: A driving circuit; A driving circuit for driving an LED display screen, wherein the LED display screen includes: a plurality of LED lamp boards; The LED lamp board includes: a PCB substrate; A plurality of LED chips are arranged on the top surface of the PCB substrate; The driving circuit is arranged on the PCB substrate for driving the LED chips; The driving circuit includes: a driving IC and an LED driving circuit; The LED driving circuit includes: a plurality of LED driving row transistor MOSs arranged in an array; Light-emitting diodes are arranged on the LED driving row transistor MOSs, and the LED chips are located in the light-emitting diodes; The LED chips include: red light-emitting diodes, green light-emitting diodes and blue light-emitting diodes. One red light-emitting diode, one green light-emitting diode and one blue light-emitting diode are combined into one pixel. The light-emitting diodes of one pixel are of the same polarity, including: common cathode or common anode; The driving IC includes: a row driving circuit and a constant current driving circuit; The row driving circuit includes: a plurality of row driving chips; A plurality of row driving chips are grouped and connected in series to form a row driving circuit. The interfaces above the LED driving row transistor MOSs in the same column are connected to the output interfaces of the row driving chips in the same group of the row driving circuit; The constant current driving circuit includes: a plurality of LED display PWM driving chips; A plurality of LED display PWM driving chips are grouped and connected in series to form a constant current driving circuit. The interfaces corresponding to the light-emitting diodes of the same color below the LED driving row transistor MOSs in the same column are connected to the output interfaces of the LED display PWM driving chips in the same group of the constant current driving circuit.

2. The driving system for an LED display according to claim 1, characterized in that, The LED driving circuit is arranged on the side of the PCB substrate where the LED chips are installed, and the driving IC is arranged on the other side of the PCB substrate.

3. The driving system for an LED display according to claim 1, characterized in that, The light-emitting diodes of one pixel are arranged side by side and cyclically on the LED driving row transistor MOSs, and the positive and negative electrodes respectively correspond to different interfaces of the LED driving row transistor MOSs.

4. The driving system for an LED display according to claim 1, characterized in that, 15 pixels of light-emitting diodes are arranged on one LED driving row transistor MOS.

5. The driving system for an LED display according to claim 1, characterized in that, Eight row driving chips are arranged in the row driving circuit; Four row driving chips are in a group and connected in series. The DOUT interface of one row driving chip is connected to the DIN interface of the next row driving chip. For two groups of serially connected row driving chips, the output interface of the first group is connected to the interface above the LED driving row transistor MOSs in the first column; The output interface of the second group is connected to the interface above the LED driving row transistor MOSs in the second column.

6. The driving system for an LED display according to claim 5, characterized in that, The constant current drive circuit is provided with fifty-four LED display PWM drive chips, grouped in nine chips per group and connected in series. The SDO interface of one LED display PWM drive chip is connected to the SDI interface of the next LED display PWM drive chip; there are six groups of serially connected LED display PWM drive chips; the output interface of the first group is connected to the interface corresponding to the green light-emitting diode at the lower part of the MOS of the LED drive line transistor in the first column; the output interface of the second group is connected to the interface corresponding to the red light-emitting diode at the lower part of the MOS of the LED drive line transistor in the first column; the output interface of the third group is connected to the interface corresponding to the blue light-emitting diode at the lower part of the MOS of the LED drive line transistor in the first column; the output interface of the fourth group is connected to the interface corresponding to the green light-emitting diode at the lower part of the MOS of the LED drive line transistor in the first column; the output interface of the fifth group is connected to the interface corresponding to the red light-emitting diode at the lower part of the MOS of the LED drive line transistor in the first column; the output interface of the sixth group is connected to the interface corresponding to the blue light-emitting diode at the lower part of the MOS of the LED drive line transistor in the first column.

7. The drive system for an LED display according to claim 6, characterized in that, The drive IC further includes: a FLASH circuit; The FLASH circuit includes: a first driver, a low-dropout regulator, and a FLASH flash memory; The first driver, the low-dropout regulator, and the FLASH flash memory are interconnected to form the FLASH circuit.

8. The driving system for an LED display according to claim 7, characterized in that: The drive IC further includes: an interface control circuit; The interface control circuit includes: a pin connector and a number of second drivers; A number of second drivers are all connected to the pin connector, and the first driver is also connected to the pin connector.

9. The drive system for an LED display according to claim 8, characterized in that: The drive IC further includes: an EMC filter circuit; The EMC filter circuit includes: a number of parallel capacitors connected to the VR interface and the GND interface of the pin connector for filtering.

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