LED dot matrix display module

Abstract

The utility model discloses an LED dot matrix display module, and belongs to the technical field of embedding. The LED driving circuit comprises an MCU circuit, a POWER circuit, a UART circuit, an LED driving circuit, an LED array circuit and a lamp ring control circuit. The MCU circuit is connected with the POWER circuit, the UART circuit, the LED driving circuit and the lamp ring control circuit, the POWER circuit is connected with the UART circuit, the LED driving circuit and the lamp ring control circuit, and the LED driving circuit is connected with the LED array circuit; the POWER circuit provides a power supply, all the circuits are powered on, the MCU circuit controls the LED drive circuit and the lamp ring drive circuit to operate, the LED drive circuit controls the LED array circuit to operate, and the UART circuit executes related instructions of the MCU circuit to communicate with a client. Due to the adoption of the LED dot matrix, the color rendition degree of the display module is higher, the display module is not easy to distort when being watched at different angles, meanwhile, the display module is suitable for various light environments, is small and convenient, and can be applied to various working industries.

Description

Technical Field

[0001] The utility model relates to the field of embedded technology, in particular to an LED dot matrix display module. Background Art

[0002] We often see outdoor large screens in shopping malls. The LED dot matrix of this outdoor large screen can not only display a variety of patterns, but also has very cool special effects and is highly ornamental.

[0003] However, this kind of outdoor large-screen dot matrix screen is large in size, inconvenient to assemble, and the cost of a single module is very high, so it is not suitable for use in people's daily necessities;

[0004] Therefore, people are in urgent need of an LED dot matrix display module to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide an LED dot matrix display module to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] An LED dot matrix display module, the utility model includes an MCU circuit, a POWER circuit, a UART circuit, an LED drive circuit, an LED array circuit and a light ring control circuit;

[0008] The MCU circuit is connected to the POWER circuit, the UART circuit, the LED drive circuit and the light ring control circuit; the POWER circuit is connected to the UART circuit, the LED drive circuit and the light ring control circuit; and the LED drive circuit is connected to the LED array circuit.

[0009] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0010] The utility model adopts an LED dot matrix display solution and uses LED patch lamps as light sources, so that the color reproduction of the entire display module is high and distortion is not easy to occur when viewed from different angles; in addition, this solution adopts a driver chip ET6934S with a 16-level dimming function, which is suitable for a variety of lighting environments, and this display module is small and convenient, with a total height of no more than 15mm, and can be applied to a variety of work industries, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0012] Figure 1This is a system structure diagram of an LED dot matrix display module of the utility model;

[0013] Figure 2 This is a schematic diagram of the MCU circuit of an LED dot matrix display module of the utility model;

[0014] Figure 3 This is a schematic diagram of a POWER circuit of an LED dot matrix display module of the utility model;

[0015] Figure 4 This is a schematic diagram of a UART circuit of an LED dot matrix display module of the utility model;

[0016] Figure 5 This is a schematic diagram of an LED driving circuit of an LED dot matrix display module of the utility model;

[0017] Figure 6 This is a schematic diagram of an LED array circuit of an LED dot matrix display module of the utility model;

[0018] Figure 7 This is a schematic diagram of area a in an LED array circuit of an LED dot matrix display module of the utility model;

[0019] Figure 8 This is a schematic diagram of area b in an LED array circuit of an LED dot matrix display module of the utility model;

[0020] Fig. 9 This is a schematic diagram of area c in an LED array circuit of an LED dot matrix display module of the utility model;

[0021] Fig.10 This is a schematic diagram of area d in an LED array circuit of an LED dot matrix display module of the utility model;

[0022] Fig.11 This is a schematic diagram of the e area in the LED array circuit of an LED dot matrix display module of the utility model;

[0023] Fig.12 This is a schematic diagram of the f region in the LED array circuit of an LED dot matrix display module of the utility model;

[0024] Fig.13 This is a schematic diagram of a light ring control circuit of an LED dot matrix display module of the utility model;

[0025] Fig.14 This is a schematic diagram of area A in a light ring control circuit of an LED dot matrix display module of the utility model;

[0026] Fig.15This is a schematic diagram of area B in a light ring control circuit of an LED dot matrix display module of the utility model;

[0027] Fig.16 This is a schematic diagram of area C in a light ring control circuit of an LED dot matrix display module of the utility model;

[0028] Fig.17 The utility model discloses a schematic diagram of a D area in a light ring control circuit of an LED dot matrix display module. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0030] See also Figure 1 , the utility model provides a technical solution:

[0031] An LED dot matrix display module, the utility model includes an MCU circuit, a POWER circuit, a UART circuit, an LED drive circuit, an LED array circuit and a light ring control circuit;

[0032] The MCU circuit is connected to the POWER circuit, the UART circuit, the LED drive circuit and the light ring control circuit; the POWER circuit is connected to the UART circuit, the LED drive circuit and the light ring control circuit; and the LED drive circuit is connected to the LED array circuit.

[0033] See also Figure 2 , the MCU circuit includes a chip U1, a connector CON2, a capacitor C16=1uF, a capacitor C17=100nF, a capacitor C52=1uF and a capacitor C53=100nF, the chip U1 includes pins 8, 9, 11, 12, 13, 19, 20, 21, 22, 23, 24, 26, 34, 37, 47 and 48, the connector CON2 includes pins 1, 2, 3 and 4;

[0034] Pin 8, pin 23 and pin 47 in the chip U1 are all electrically connected to the ground wire;

[0035] Pins 9, 24 and 48 of the chip U1 are all electrically connected to the VCC5V endpoint, and the MCU circuit is electrically connected to the POWER circuit via the VCC5V endpoint;

[0036] Pins 11, 12, 19, 20, 21 and 22 of the chip U1 are all electrically connected to the LED driving circuit;

[0037] Pin 13 in the chip U1 is electrically connected to the UART circuit;

[0038] Pin 26 in the chip U1 is electrically connected to the light ring control circuit;

[0039] The pin 34 in the chip U1 is electrically connected to the pin 3 in the connector CON2;

[0040] The pin 37 in the chip U1 is electrically connected to the pin 2 in the connector CON2;

[0041] Pin 1 of the connection port CON2 is electrically connected to the VCC5V endpoint;

[0042] Pin 4 of the connection port CON2 is electrically connected to the ground wire;

[0043] The first end of the capacitor C16, the first end of the capacitor C17, the first end of the capacitor C52 and the first end of the capacitor C53 are all electrically connected to the ground line;

[0044] The second end of the capacitor C16, the second end of the capacitor C17, the second end of the capacitor C52 and the second end of the capacitor C53 are all electrically connected to the VCC5V terminal;

[0045] MCU circuit, this solution uses Purui's 32-bit microcontroller PY32F040C1BT6 as the CPU of the display module, which is used to communicate with the host and control the LED driver chip and light ring driver.

[0046] See also Figure 3 , the POWER circuit includes a connection port CON1, a diode D1, a diode D2, a capacitor C1=100nF, a capacitor C2=22uF and a capacitor C3=10uF, and the connection port CON1 includes a pin 1, a pin 3, a pin 4, a pin 5 and a pin 6;

[0047] Pin 1 in the connector CON1 is electrically connected to the UART circuit;

[0048] Pins 3, 5 and 6 of the connector CON1 are all electrically connected to the ground wire;

[0049] Pin 4 of the connector CON1, a first end of the diode D1, a first end of the diode D2, a first end of the capacitor C1, a first end of the capacitor C2, and a first end of the capacitor C3 are all electrically connected to the VCC5V terminal;

[0050] The POWER circuit is electrically connected to the UART circuit, the LED drive circuit and the light ring control circuit via the VCC5V endpoint;

[0051] The second end of the diode D1 , the second end of the diode D2 , the second end of the capacitor C1 , the second end of the capacitor C2 , and the second end of the capacitor C3 are all electrically connected to the ground line.

[0052] See also Figure 4 , the UART circuit includes a resistor R1=10K, a resistor R2=100R and a diode D3;

[0053] The first end of the resistor R1 is electrically connected to the VCC5V terminal;

[0054] The second end of the resistor R1 and the first end of the resistor R2 are both electrically connected to the pin 13 of the chip U1 in the MCU circuit;

[0055] The second end of the resistor R2 and the first end of the diode D3 are both electrically connected to the pin 1 of the connection port CON1 in the POWER circuit;

[0056] The second end of the diode D3 is electrically connected to the ground line;

[0057] UART circuit,PA3 of chip PY32F040C1BT6 is a serial port receiving pin, which is used to communicate with the customer's mainboard to execute the relevant instructions of the mainboard.

[0058] See also Figure 5The LED driving circuit includes chip U2, chip U3, chip U4, capacitor C24 = 1uF, capacitor C25 = 100nF, capacitor C26 = 47uF, capacitor C39 = 1uF, capacitor C40 = 100nF, capacitor C41 = 47uF, capacitor C48 = 1uF, capacitor C49 = 100nF, capacitor C50 = 47uF, resistor R3 = 10K, resistor R4 = 100R, Resistor R5=10K, resistor R6=100R, resistor R7=10K, resistor R8=100R, resistor R9=10K, resistor R10=100R, resistor R11=10K, resistor R12=100R, resistor R13=10K and resistor R14=100R, the chip U2 includes pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10 , pin 11, pin 12, pin 13, pin 14, pin 15, pin 16, pin 17, pin 18, pin 24, pin 25, pin 26, pin 27 and pin 28, the chip U3 includes pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, pin 12, pin 13, pin 14, pin 15, pin 16, pin 17, pin 18, pin 24, pin 25, pin 26, pin 27 and pin 28, the chip U4 includes pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, pin 12, pin 13, pin 14, pin 15, pin 16, pin 17, pin 18, pin 24, pin 25, pin 26, pin 27 and pin 28;

[0059] Pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 13, pin 14, pin 15, pin 16, pin 18, pin 25, pin 26, pin 27 and pin 28 of the chip U2 are all electrically connected to the LED array circuit;

[0060] The pin 11 in the chip U2 is electrically connected to the first end of the resistor R4;

[0061] The second end of the resistor R4 and the first end of the resistor R3 are both electrically connected to the pin 19 of the chip U1 in the MCU circuit;

[0062] The pin 12 in the chip U2 is electrically connected to the first end of the resistor R6;

[0063] The second end of the resistor R6 and the first end of the resistor R5 are both electrically connected to the pin 20 of the chip U1 in the MCU circuit;

[0064] The second end of the resistor R3 and the second end of the resistor R5 are both electrically connected to the VCC5V terminal;

[0065] The pin 17 in the chip U2, the first end of the capacitor C24, the first end of the capacitor C25 and the first end of the capacitor C26 are all electrically connected to the ground line;

[0066] The pin 24 in the chip U2, the second end of the capacitor C24, the second end of the capacitor C25 and the second end of the capacitor C26 are all electrically connected to the VCC5V terminal;

[0067] Pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 13, pin 14, pin 15, pin 16, pin 18, pin 25, pin 26, pin 27 and pin 28 of the chip U3 are all electrically connected to the LED array circuit;

[0068] The pin 11 in the chip U3 is electrically connected to the first end of the resistor R8;

[0069] The second end of the resistor R8 and the first end of the resistor R7 are both electrically connected to the pin 11 of the chip U1 in the MCU circuit;

[0070] The pin 12 in the chip U3 is electrically connected to the first end of the resistor R10;

[0071] The second end of the resistor R10 and the first end of the resistor R9 are both electrically connected to the pin 12 of the chip U1 in the MCU circuit;

[0072] The second end of the resistor R7 and the second end of the resistor R9 are both electrically connected to the VCC5V terminal;

[0073] The pin 17 in the chip U3, the first end of the capacitor C39, the first end of the capacitor C40 and the first end of the capacitor C41 are all electrically connected to the ground line;

[0074] The pin 24 in the chip U3, the second end of the capacitor C39, the second end of the capacitor C40 and the second end of the capacitor C41 are all electrically connected to the VCC5V terminal;

[0075] Pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 13, pin 14, pin 15, pin 16, pin 18, pin 25, pin 26, pin 27 and pin 28 of the chip U4 are all electrically connected to the LED array circuit;

[0076] The pin 11 in the chip U4 is electrically connected to the first end of the resistor R12;

[0077] The second end of the resistor R12 and the first end of the resistor R11 are both electrically connected to the pin 21 of the chip U1 in the MCU circuit;

[0078] The pin 12 in the chip U4 is electrically connected to the first end of the resistor R14;

[0079] The second end of the resistor R14 and the first end of the resistor R13 are both electrically connected to the pin 22 of the chip U1 in the MCU circuit;

[0080] The second end of the resistor R11 and the second end of the resistor R13 are both electrically connected to the VCC5V terminal;

[0081] The pin 17 in the chip U4, the first end of the capacitor C48, the first end of the capacitor C49 and the first end of the capacitor C50 are all electrically connected to the ground line;

[0082] The pin 24 of the chip U4, the second end of the capacitor C48, the second end of the capacitor C49 and the second end of the capacitor C50 are all electrically connected to the VCC5V terminal;

[0083] After the LED driving circuit is powered on, two of the relevant control pins (PA1, PA2, PB1, PB2, PB10 and PB11) of PY32F040C1BT6 are divided into three analog IICs to control the three driving chips U2, U3 and U4 respectively. The chip scans and drives the LED wicks through the time-division multiplexing of SEG and GRID.

[0084] See also Figure 6-Figure 12 , the LED array circuit includes light-emitting diodes A1 to A48, light-emitting diodes B1 to B42, light-emitting diodes E1 to E48, light-emitting diodes F1 to F42, light-emitting diodes G1 to G40, light-emitting diodes H1 to H28 and light-emitting diodes W1 to W14. The first ends of the light-emitting diodes A1, A9, A17, A25, A33, A41, W1, W2, W3, W4 and W5 are all electrically connected to the pin 25 of the chip U2 in the LED driving circuit;

[0085] The first ends of the light emitting diodes A2, A10, A18, A26, A34, A42, B1, B8, B15, B22 and B29 are all electrically connected to the pin 26 of the chip U2 in the LED driving circuit;

[0086] The first ends of the light emitting diodes A3, A11, A19, A27, A35, A43, B2, B9, B16, B23 and B30 are all electrically connected to the pin 27 of the chip U2 in the LED driving circuit;

[0087] The first ends of the light emitting diodes A4, A12, A20, A28, A36, A44, B3, B10, B17, B24 and B31 are all electrically connected to the pin 28 of the chip U2 in the LED driving circuit;

[0088] The first ends of the light emitting diodes A5, A13, A21, A29, A37, A45, B4, B11, B18, B25 and B32 are all electrically connected to the pin 1 of the chip U2 in the LED driving circuit;

[0089] The first ends of the light emitting diodes A6, A14, A22, A30, A38, A46, B5, B12, B19, B26 and B33 are all electrically connected to the pin 2 of the chip U2 in the LED driving circuit;

[0090] The first ends of the light emitting diodes A7, A15, A23, A31, A39, A47, B6, B13, B20, B27 and B34 are all electrically connected to the pin 3 of the chip U2 in the LED driving circuit;

[0091] The first ends of the light emitting diodes A8, A16, A24, A32, A40, A48, B7, B14, B21, B28 and B35 are all electrically connected to the pin 4 of the chip U2 in the LED driving circuit;

[0092] The second ends of the light emitting diodes A1, A2, A3, A4, A5, A6, A7 and A8 are all electrically connected to the pin 5 of the chip U2 in the LED driving circuit;

[0093] The second ends of the light emitting diodes A9, A10, A11, A12, A13, A14, A15 and A16 are all electrically connected to the pin 6 of the chip U2 in the LED driving circuit;

[0094] The second ends of the light emitting diodes A17, A18, A19, A20, A21, A22, A23 and A24 are all electrically connected to the pin 7 of the chip U2 in the LED driving circuit;

[0095] The second ends of the light emitting diodes A25, A26, A27, A28, A29, A30, A31 and A32 are all electrically connected to the pin 8 of the chip U2 in the LED driving circuit;

[0096] The second ends of the light emitting diodes A33, A34, A35, A36, A37, A38, A39 and A40 are all electrically connected to the pin 9 of the chip U2 in the LED driving circuit;

[0097] The second ends of the light emitting diodes A41, A42, A43, A44, A45, A46, A47 and A48 are all electrically connected to the pin 10 of the chip U2 in the LED driving circuit;

[0098] The second ends of the light emitting diodes W1, B1, B2, B3, B4, B5, B6 and B7 are all electrically connected to the pin 13 of the chip U2 in the LED driving circuit;

[0099] The second ends of the light emitting diodes W2, B8, B9, B10, B11, B12, B13 and B14 are all electrically connected to the pin 14 of the chip U2 in the LED driving circuit;

[0100] The second ends of the light emitting diodes W3, B15, B16, B17, B18, B19, B20 and B21 are all electrically connected to the pin 15 of the chip U2 in the LED driving circuit;

[0101] The second ends of the light emitting diodes W4, B22, B23, B24, B25, B26, B27 and B28 are all electrically connected to the pin 16 of the chip U2 in the LED driving circuit;

[0102] The second ends of the light emitting diodes W5, B29, B30, B31, B32, B33, B34 and B35 are all electrically connected to the pin 18 of the chip U2 in the LED driving circuit;

[0103] The first ends of the light emitting diodes E1, E9, E17, E25, E33, E41, W7, W8, W9, W10 and W11 are all electrically connected to the pin 25 of the chip U3 in the LED driving circuit;

[0104] The first ends of the light emitting diodes E2, E10, E18, E26, E34, E42, F1, F8, F15, F22 and B29 are all electrically connected to the pin 26 of the chip U3 in the LED driving circuit;

[0105] The first ends of the light emitting diodes E3, E11, E19, E27, E35, E43, F2, F9, F16, F23 and F30 are all electrically connected to the pin 27 of the chip U3 in the LED driving circuit;

[0106] The first ends of the light emitting diodes E4, E12, E20, E28, E36, E44, F3, F10, F17, F24 and F31 are all electrically connected to the pin 28 of the chip U3 in the LED driving circuit;

[0107] The first ends of the light emitting diodes E5, E13, E21, E29, E37, E45, F4, F11, F18, F25 and F32 are all electrically connected to the pin 1 of the chip U3 in the LED driving circuit;

[0108] The first ends of the light emitting diodes E6, E14, E22, E30, E38, E46, F5, F12, F19, F26 and F33 are all electrically connected to the pin 2 of the chip U3 in the LED driving circuit;

[0109] The first ends of the light emitting diodes E7, E15, E23, E31, E39, E47, F6, F13, F20, F27 and F34 are all electrically connected to the pin 3 of the chip U3 in the LED driving circuit;

[0110] The first ends of the light emitting diodes E8, E16, E24, E32, E40, E48, F7, F14, F21, F28 and F35 are all electrically connected to the pin 4 of the chip U3 in the LED driving circuit;

[0111] The second ends of the light emitting diodes E1, E2, E3, E4, E5, E6, E7 and E8 are all electrically connected to the pin 5 of the chip U3 in the LED driving circuit;

[0112] The second ends of the light emitting diodes E9, E10, E11, E12, E13, E14, E15 and E16 are all electrically connected to the pin 6 of the chip U3 in the LED driving circuit;

[0113] The second ends of the light emitting diodes E17, E18, E19, E20, E21, E22, E23 and E24 are all electrically connected to the pin 7 of the chip U3 in the LED driving circuit;

[0114] The second ends of the light emitting diodes E25, E26, E27, E28, E29, E30, E31 and E32 are all electrically connected to the pin 8 of the chip U3 in the LED driving circuit;

[0115] The second ends of the light emitting diodes E33, E34, E35, E36, E37, E38, E39 and E40 are all electrically connected to the pin 9 of the chip U3 in the LED driving circuit;

[0116] The second ends of the light emitting diodes E41, E42, E43, E44, E45, E46, E47 and E48 are all electrically connected to the pin 10 of the chip U3 in the LED driving circuit;

[0117] The second ends of the light emitting diodes W7, F1, F2, F3, F4, F5, F6 and F7 are all electrically connected to the pin 13 of the chip U3 in the LED driving circuit;

[0118] The second ends of the light emitting diodes W8, F8, F9, F10, F11, F12, F13 and F14 are all electrically connected to the pin 14 of the chip U3 in the LED driving circuit;

[0119] The second ends of the light emitting diodes W9, F15, F16, F17, F18, F19, F20 and F21 are all electrically connected to the pin 15 of the chip U3 in the LED driving circuit;

[0120] The second ends of the light emitting diodes W10, F22, F23, F24, F25, F26, F27 and F28 are all electrically connected to the pin 16 of the chip U3 in the LED driving circuit;

[0121] The second ends of the light emitting diodes W11, F29, F30, F31, F32, F33, F34 and F35 are all electrically connected to the pin 18 of the chip U3 in the LED driving circuit;

[0122] The first ends of the light emitting diodes G1, G9, G17, G25, G33, W13, W14, W6 and W12 are all electrically connected to the pin 25 of the chip U4 in the LGD driving circuit;

[0123] The first ends of the light emitting diodes G2, G10, G18, G26, G34, H1, H8, H15, H22, B36 and F36 are electrically connected to the pin 26 of the chip U4 in the LGD driving circuit;

[0124] The first ends of the light emitting diodes G3, G11, G19, G27, G35, H2, H9, H16, H23, B37 and F37 are all electrically connected to the pin 27 of the chip U4 in the LGD driving circuit;

[0125] The first ends of the light emitting diodes G4, G12, G20, G28, G36, H3, H10, H17, H24, B38 and F38 are all electrically connected to the pin 28 of the chip U4 in the LGD driving circuit;

[0126] The first ends of the light emitting diodes G5, G13, G21, G29, G37, H4, H11, H18, H25, B39 and F39 are all electrically connected to pin 1 of chip U4 in the LGD driving circuit;

[0127] The first ends of the light emitting diodes G6, G14, G22, G30, G38, H5, H12, H19, H26, B40 and F40 are all electrically connected to the pin 2 of the chip U4 in the LGD driving circuit;

[0128] The first ends of the light emitting diodes G7, G15, G23, G31, G39, H6, H13, H20, H27, B41 and F41 are all electrically connected to the pin 3 of the chip U4 in the LGD driving circuit;

[0129] The first ends of the light emitting diodes G8, G16, G24, G32, G40, H7, H14, H21, H28, B42 and F42 are all electrically connected to the pin 4 of the chip U4 in the LGD driving circuit;

[0130] The second ends of the light emitting diodes G1, G2, G3, G4, G5, G6, G7 and G8 are all electrically connected to the pin 5 of the chip U4 in the LGD driving circuit;

[0131] The second ends of the light emitting diodes G9, G10, G11, G12, G13, G14, G15 and G16 are all electrically connected to the pin 6 of the chip U4 in the LGD driving circuit;

[0132] The second ends of the light emitting diodes G17, G18, G19, G20, G21, G22, G23 and G24 are all electrically connected to the pin 7 of the chip U4 in the LGD driving circuit;

[0133] The second ends of the light emitting diodes G25, G26, G27, G28, G29, G30, G31 and G32 are all electrically connected to the pin 8 of the chip U4 in the LGD driving circuit;

[0134] The second ends of the light emitting diodes G33, G34, G35, G36, G37, G38, G39 and G40 are all electrically connected to the pin 9 of the chip U4 in the LGD driving circuit;

[0135] The second ends of the light emitting diodes W13, H1, H2, H3, H4, H5, H6 and H7 are all electrically connected to the pin 10 of the chip U4 in the LGD driving circuit;

[0136] The second ends of the light emitting diodes W14, H8, H9, H10, H11, H12, H13 and H14 are all electrically connected to the pin 13 of the chip U4 in the LGD driving circuit;

[0137] The second ends of the light emitting diodes H15, H16, H17, H18, H19, H20 and H21 are all electrically connected to the pin 14 of the chip U4 in the LGD driving circuit;

[0138] The second ends of the light emitting diodes H22, H23, H24, H25, H26, H27 and H28 are all electrically connected to the pin 15 of the chip U4 in the LGD driving circuit;

[0139] The second ends of the light emitting diodes W6, B36, B37, B38, B39, B40, B41 and B42 are all electrically connected to the pin 16 of the chip U4 in the LGD driving circuit;

[0140] The second ends of the light emitting diodes W12, F36, F37, F38, F39, F40, F41 and F42 are all electrically connected to the pin 18 of the chip U4 in the LGD driving circuit.

[0141] See also Figure 13-Figure 17 , the light ring control circuit includes magic lights LED1 to LED37, capacitors C4 to C15, capacitors C18 to C23, capacitors C27 to C38, capacitors C42 to C47 and capacitor C51, the magic lights LED1 to LED36 all include pin 1, pin 2, pin 3 and pin 4, and the magic light LED37 includes pin 2, pin 3 and pin 4;

[0142] The values ​​of the capacitors C4 to C15, C18 to C23, C27 to C38, C42 to C47 and C51 are all 100 nF;

[0143] Pins 4 of the magic lights LED1 to LED37 are all electrically connected to the ground wire;

[0144] Pin 3 of the magic light LED1 is electrically connected to pin 26 of chip U1 in the MCU circuit;

[0145] Pin 2 of the magic light LED1 and the first end of the capacitor C4 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED1 is electrically connected to pin 3 of the magic light LED2;

[0146] Pin 2 of the magic light LED2 and the first end of the capacitor C5 are electrically connected to the VCC5V terminal, and pin 1 of the magic light LED2 is electrically connected to pin 3 of the magic light LED3;

[0147] Pin 2 of the magic light LED3 and the first end of the capacitor C6 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED3 is electrically connected to pin 3 of the magic light LED4;

[0148] Pin 2 of the magic light LED4 and the first end of the capacitor C7 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED4 is electrically connected to pin 3 of the magic light LED5;

[0149] Pin 2 of the magic light LED5 and the first end of the capacitor C8 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED5 is electrically connected to pin 3 of the magic light LED6;

[0150] Pin 2 of the magic light LED6 and the first end of the capacitor C9 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED6 is electrically connected to pin 3 of the magic light LED7;

[0151] Pin 2 of the magic light LED7 and the first end of the capacitor C10 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED7 is electrically connected to pin 3 of the magic light LED8;

[0152] Pin 2 of the magic light LED 8 and the first end of the capacitor C11 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 8 is electrically connected to pin 3 of the magic light LED 9;

[0153] Pin 2 of the magic light LED 9 and the first end of the capacitor C12 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 9 is electrically connected to pin 3 of the magic light LED 10;

[0154] Pin 2 of the magic light LED 10 and the first end of the capacitor C13 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 10 is electrically connected to pin 3 of the magic light LED 11;

[0155] Pin 2 of the magic light LED 11 and the first end of the capacitor C14 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 11 is electrically connected to pin 3 of the magic light LED 12;

[0156] Pin 2 of the magic light LED 12 and the first end of the capacitor C15 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 12 is electrically connected to pin 3 of the magic light LED 13;

[0157] Pin 2 of the magic light LED 13 and the first end of the capacitor C18 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 13 is electrically connected to pin 3 of the magic light LED 14;

[0158] Pin 2 of the magic light LED 14 and the first end of the capacitor C19 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 14 is electrically connected to pin 3 of the magic light LED 15;

[0159] Pin 2 of the magic light LED 15 and the first end of the capacitor C20 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 15 is electrically connected to pin 3 of the magic light LED 16;

[0160] Pin 2 of the magic light LED 16 and the first end of the capacitor C21 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 16 is electrically connected to pin 3 of the magic light LED 17;

[0161] Pin 2 of the magic light LED 17 and the first end of the capacitor C22 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 17 is electrically connected to pin 3 of the magic light LED 18;

[0162] Pin 2 of the magic light LED 18 and the first end of the capacitor C23 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 18 is electrically connected to pin 3 of the magic light LED 19;

[0163] Pin 2 of the magic light LED 19 and the first end of the capacitor C27 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 19 is electrically connected to pin 3 of the magic light LED 20;

[0164] Pin 2 of the magic light LED 20 and the first end of the capacitor C28 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 20 is electrically connected to pin 3 of the magic light LED 21;

[0165] Pin 2 of the magic light LED 21 and the first end of the capacitor C29 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 21 is electrically connected to pin 3 of the magic light LED 22;

[0166] Pin 2 of the magic light LED 22 and the first end of the capacitor C30 are electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 22 is electrically connected to pin 3 of the magic light LED 23;

[0167] Pin 2 of the magic light LED 23 and the first end of the capacitor C31 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 23 is electrically connected to pin 3 of the magic light LED 24;

[0168] Pin 2 of the magic light LED 24 and the first end of the capacitor C32 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 24 is electrically connected to pin 3 of the magic light LED 25;

[0169] Pin 2 of the magic light LED 25 and the first end of the capacitor C33 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 25 is electrically connected to pin 3 of the magic light LED 26;

[0170] Pin 2 of the magic light LED 26 and the first end of the capacitor C34 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 26 is electrically connected to pin 3 of the magic light LED 27;

[0171] Pin 2 of the magic light LED 27 and the first end of the capacitor C35 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 27 is electrically connected to pin 3 of the magic light LED 28;

[0172] Pin 2 of the magic light LED 28 and the first end of the capacitor C36 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 28 is electrically connected to pin 29 of the magic light LED 29;

[0173] Pin 2 of the magic light LED 29 and the first end of the capacitor C37 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 29 is electrically connected to pin 3 of the magic light LED 30;

[0174] Pin 2 of the magic light LED 30 and the first end of the capacitor C38 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 30 is electrically connected to pin 3 of the magic light LED 31;

[0175] Pin 2 of the magic light LED 31 and the first end of the capacitor C42 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 31 is electrically connected to pin 3 of the magic light LED 32;

[0176] Pin 2 of the magic light LED 32 and the first end of the capacitor C43 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 32 is electrically connected to pin 3 of the magic light LED 33;

[0177] Pin 2 of the magic light LED 33 and the first end of the capacitor C44 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 33 is electrically connected to pin 3 of the magic light LED 34;

[0178] Pin 2 of the magic light LED 34 and the first end of the capacitor C45 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 34 is electrically connected to pin 3 of the magic light LED 35;

[0179] Pin 2 of the magic light LED 35 and the first end of the capacitor C46 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 35 is electrically connected to pin 3 of the magic light LED 36;

[0180] Pin 2 of the magic light LED 36 and the first end of the capacitor C47 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 36 is electrically connected to pin 3 of the magic light LED 37;

[0181] Pin 2 of the magic light LED37 and the first end of the capacitor C51 are both electrically connected to the VCC5V terminal;

[0182] The second ends of the capacitors C4 to C15, the capacitors C18 to C23, the capacitors C27 to C38, the capacitors C42 to C47 and the capacitor C51 are all electrically connected to the ground line;

[0183] The light ring control circuit, the PB13 pin of the chip PY32F040C1BT6, uses the chip register and software to experiment with the colorful display effect of the light ring. The light ring uses RGB colorful lights. Only one pin is needed to connect to the CPU to control the on and off of all colorful lights and the color changes.

[0184] Example:

[0185] The POWER circuit provides power, and each circuit is powered on. The MCU circuit controls the operation of the LED drive circuit and the light ring drive circuit. The LED drive circuit controls the operation of the LED array circuit. The UART circuit executes the relevant instructions of the MCU circuit to communicate with the customer.

[0186] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0187] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An LED dot matrix display module, characterized in that: Including MCU circuit, POWER circuit, UART circuit, LED drive circuit, LED array circuit and light ring control circuit; The MCU circuit is connected to the POWER circuit, the UART circuit, the LED drive circuit and the light ring control circuit; the POWER circuit is connected to the UART circuit, the LED drive circuit and the light ring control circuit; and the LED drive circuit is connected to the LED array circuit.

2. The LED dot matrix display module according to claim 1, characterized in that: The MCU circuit includes a chip U1, a connection port CON2, a capacitor C16, a capacitor C17, a capacitor C52 and a capacitor C53, the chip U1 includes pins 8, 9, 11, 12, 13, 19, 20, 21, 22, 23, 24, 26, 34, 37, 47 and 48, and the connection port CON2 includes pins 1, 2, 3 and 4; Pin 8, pin 23 and pin 47 in the chip U1 are all electrically connected to the ground wire; Pins 9, 24 and 48 of the chip U1 are all electrically connected to the VCC5V endpoint, and the MCU circuit is electrically connected to the POWER circuit via the VCC5V endpoint; Pins 11, 12, 19, 20, 21 and 22 of the chip U1 are all electrically connected to the LED driving circuit; Pin 13 in the chip U1 is electrically connected to the UART circuit; Pin 26 in the chip U1 is electrically connected to the light ring control circuit; The pin 34 in the chip U1 is electrically connected to the pin 3 in the connector CON2; The pin 37 in the chip U1 is electrically connected to the pin 2 in the connector CON2; Pin 1 of the connection port CON2 is electrically connected to the VCC5V endpoint; Pin 4 of the connection port CON2 is electrically connected to the ground wire; The first end of the capacitor C16, the first end of the capacitor C17, the first end of the capacitor C52 and the first end of the capacitor C53 are all electrically connected to the ground line; The second end of the capacitor C16 , the second end of the capacitor C17 , the second end of the capacitor C52 , and the second end of the capacitor C53 are all electrically connected to the VCC5V terminal.

3. The LED dot matrix display module according to claim 2, characterized in that: The POWER circuit includes a connection port CON1, a diode D1, a diode D2, a capacitor C1, a capacitor C2 and a capacitor C3, and the connection port CON1 includes a pin 1, a pin 3, a pin 4, a pin 5 and a pin 6; Pin 1 in the connector CON1 is electrically connected to the UART circuit; Pins 3, 5 and 6 of the connector CON1 are all electrically connected to the ground wire; Pin 4 of the connector CON1, a first end of the diode D1, a first end of the diode D2, a first end of the capacitor C1, a first end of the capacitor C2, and a first end of the capacitor C3 are all electrically connected to the VCC5V terminal; The POWER circuit is electrically connected to the UART circuit, the LED drive circuit and the light ring control circuit via the VCC5V endpoint; The second end of the diode D1 , the second end of the diode D2 , the second end of the capacitor C1 , the second end of the capacitor C2 , and the second end of the capacitor C3 are all electrically connected to the ground line.

4. The LED dot matrix display module according to claim 3, characterized in that: The UART circuit includes a resistor R1, a resistor R2 and a diode D3; The first end of the resistor R1 is electrically connected to the VCC5V terminal; The second end of the resistor R1 and the first end of the resistor R2 are both electrically connected to the pin 13 of the chip U1 in the MCU circuit; The second end of the resistor R2 and the first end of the diode D3 are both electrically connected to the pin 1 of the connection port CON1 in the POWER circuit; The second end of the diode D3 is electrically connected to the ground line.

5. The LED dot matrix display module according to claim 2, characterized in that: The LED driving circuit includes a chip U2, a chip U3, a chip U4, a capacitor C24, a capacitor C25, a capacitor C26, a capacitor C39, a capacitor C40, a capacitor C41, a capacitor C48, a capacitor C49, a capacitor C50, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13 and a resistor R14, and the chip U2 includes a pin 1, a pin 2, a pin 3, a pin 4, a pin 5, a pin 6, a pin 7, a pin 8, a pin 9, a pin 10, a pin 11, a pin 12, a pin 13, a pin 14, a pin 15, a pin 16, a pin 17, a pin 18, a pin 24, a pin 25 , pin 26, pin 27 and pin 28, the chip U3 includes pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, pin 12, pin 13, pin 14, pin 15, pin 16, pin 17, pin 18, pin 24, pin 25, pin 26, pin 27 and pin 28, the chip U4 includes pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 11, pin 12, pin 13, pin 14, pin 15, pin 16, pin 17, pin 18, pin 24, pin 25, pin 26, pin 27 and pin 28; Pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 13, pin 14, pin 15, pin 16, pin 18, pin 25, pin 26, pin 27 and pin 28 of the chip U2 are all electrically connected to the LED array circuit; The pin 11 in the chip U2 is electrically connected to the first end of the resistor R4; The second end of the resistor R4 and the first end of the resistor R3 are both electrically connected to the pin 19 of the chip U1 in the MCU circuit; The pin 12 in the chip U2 is electrically connected to the first end of the resistor R6; The second end of the resistor R6 and the first end of the resistor R5 are both electrically connected to the pin 20 of the chip U1 in the MCU circuit; The second end of the resistor R3 and the second end of the resistor R5 are both electrically connected to the VCC5V terminal; The pin 17 in the chip U2, the first end of the capacitor C24, the first end of the capacitor C25 and the first end of the capacitor C26 are all electrically connected to the ground line; The pin 24 in the chip U2, the second end of the capacitor C24, the second end of the capacitor C25 and the second end of the capacitor C26 are all electrically connected to the VCC5V terminal; Pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 13, pin 14, pin 15, pin 16, pin 18, pin 25, pin 26, pin 27 and pin 28 of the chip U3 are all electrically connected to the LED array circuit; The pin 11 in the chip U3 is electrically connected to the first end of the resistor R8; The second end of the resistor R8 and the first end of the resistor R7 are both electrically connected to the pin 11 of the chip U1 in the MCU circuit; The pin 12 in the chip U3 is electrically connected to the first end of the resistor R10; The second end of the resistor R10 and the first end of the resistor R9 are both electrically connected to the pin 12 of the chip U1 in the MCU circuit; The second end of the resistor R7 and the second end of the resistor R9 are both electrically connected to the VCC5V terminal; The pin 17 in the chip U3, the first end of the capacitor C39, the first end of the capacitor C40 and the first end of the capacitor C41 are all electrically connected to the ground line; The pin 24 in the chip U3, the second end of the capacitor C39, the second end of the capacitor C40 and the second end of the capacitor C41 are all electrically connected to the VCC5V terminal; Pin 1, pin 2, pin 3, pin 4, pin 5, pin 6, pin 7, pin 8, pin 9, pin 10, pin 13, pin 14, pin 15, pin 16, pin 18, pin 25, pin 26, pin 27 and pin 28 of the chip U4 are all electrically connected to the LED array circuit; The pin 11 in the chip U4 is electrically connected to the first end of the resistor R12; The second end of the resistor R12 and the first end of the resistor R11 are both electrically connected to the pin 21 of the chip U1 in the MCU circuit; The pin 12 in the chip U4 is electrically connected to the first end of the resistor R14; The second end of the resistor R14 and the first end of the resistor R13 are both electrically connected to the pin 22 of the chip U1 in the MCU circuit; The second end of the resistor R11 and the second end of the resistor R13 are both electrically connected to the VCC5V terminal; The pin 17 in the chip U4, the first end of the capacitor C48, the first end of the capacitor C49 and the first end of the capacitor C50 are all electrically connected to the ground line; The pin 24 of the chip U4, the second end of the capacitor C48, the second end of the capacitor C49 and the second end of the capacitor C50 are all electrically connected to the VCC5V terminal.

6. The LED dot matrix display module according to claim 5, characterized in that: The LED array circuit includes light emitting diodes A1 to A48, light emitting diodes B1 to B42, light emitting diodes E1 to E48, light emitting diodes F1 to F42, light emitting diodes G1 to G40, light emitting diodes H1 to H28 and light emitting diodes W1 to W14; The first ends of the light emitting diodes A1, A9, A17, A25, A33, A41, W1, W2, W3, W4 and W5 are all electrically connected to the pin 25 of the chip U2 in the LED driving circuit; The first ends of the light emitting diodes A2, A10, A18, A26, A34, A42, B1, B8, B15, B22 and B29 are all electrically connected to the pin 26 of the chip U2 in the LED driving circuit; The first ends of the light emitting diodes A3, A11, A19, A27, A35, A43, B2, B9, B16, B23 and B30 are all electrically connected to the pin 27 of the chip U2 in the LED driving circuit; The first ends of the light emitting diodes A4, A12, A20, A28, A36, A44, B3, B10, B17, B24 and B31 are all electrically connected to the pin 28 of the chip U2 in the LED driving circuit; The first ends of the light emitting diodes A5, A13, A21, A29, A37, A45, B4, B11, B18, B25 and B32 are all electrically connected to the pin 1 of the chip U2 in the LED driving circuit; The first ends of the light emitting diodes A6, A14, A22, A30, A38, A46, B5, B12, B19, B26 and B33 are all electrically connected to the pin 2 of the chip U2 in the LED driving circuit; The first ends of the light emitting diodes A7, A15, A23, A31, A39, A47, B6, B13, B20, B27 and B34 are all electrically connected to the pin 3 of the chip U2 in the LED driving circuit; The first ends of the light emitting diodes A8, A16, A24, A32, A40, A48, B7, B14, B21, B28 and B35 are all electrically connected to the pin 4 of the chip U2 in the LED driving circuit; The second ends of the light emitting diodes A1, A2, A3, A4, A5, A6, A7 and A8 are all electrically connected to the pin 5 of the chip U2 in the LED driving circuit; The second ends of the light emitting diodes A9, A10, A11, A12, A13, A14, A15 and A16 are all electrically connected to the pin 6 of the chip U2 in the LED driving circuit; The second ends of the light emitting diodes A17, A18, A19, A20, A21, A22, A23 and A24 are all electrically connected to the pin 7 of the chip U2 in the LED driving circuit; The second ends of the light emitting diodes A25, A26, A27, A28, A29, A30, A31 and A32 are all electrically connected to the pin 8 of the chip U2 in the LED driving circuit; The second ends of the light emitting diodes A33, A34, A35, A36, A37, A38, A39 and A40 are all electrically connected to the pin 9 of the chip U2 in the LED driving circuit; The second ends of the light emitting diodes A41, A42, A43, A44, A45, A46, A47 and A48 are all electrically connected to the pin 10 of the chip U2 in the LED driving circuit; The second ends of the light emitting diodes W1, B1, B2, B3, B4, B5, B6 and B7 are all electrically connected to the pin 13 of the chip U2 in the LED driving circuit; The second ends of the light emitting diodes W2, B8, B9, B10, B11, B12, B13 and B14 are all electrically connected to the pin 14 of the chip U2 in the LED driving circuit; The second ends of the light emitting diodes W3, B15, B16, B17, B18, B19, B20 and B21 are all electrically connected to the pin 15 of the chip U2 in the LED driving circuit; The second ends of the light emitting diodes W4, B22, B23, B24, B25, B26, B27 and B28 are all electrically connected to the pin 16 of the chip U2 in the LED driving circuit; The second ends of the light emitting diodes W5, B29, B30, B31, B32, B33, B34 and B35 are all electrically connected to the pin 18 of the chip U2 in the LED driving circuit; The first ends of the light emitting diodes E1, E9, E17, E25, E33, E41, W7, W8, W9, W10 and W11 are all electrically connected to the pin 25 of the chip U3 in the LED driving circuit; The first ends of the light emitting diodes E2, E10, E18, E26, E34, E42, F1, F8, F15, F22 and B29 are all electrically connected to the pin 26 of the chip U3 in the LED driving circuit; The first ends of the light emitting diodes E3, E11, E19, E27, E35, E43, F2, F9, F16, F23 and F30 are all electrically connected to the pin 27 of the chip U3 in the LED driving circuit; The first ends of the light emitting diodes E4, E12, E20, E28, E36, E44, F3, F10, F17, F24 and F31 are all electrically connected to the pin 28 of the chip U3 in the LED driving circuit; The first ends of the light emitting diodes E5, E13, E21, E29, E37, E45, F4, F11, F18, F25 and F32 are all electrically connected to the pin 1 of the chip U3 in the LED driving circuit; The first ends of the light emitting diodes E6, E14, E22, E30, E38, E46, F5, F12, F19, F26 and F33 are all electrically connected to the pin 2 of the chip U3 in the LED driving circuit; The first ends of the light emitting diodes E7, E15, E23, E31, E39, E47, F6, F13, F20, F27 and F34 are all electrically connected to the pin 3 of the chip U3 in the LED driving circuit; The first ends of the light emitting diodes E8, E16, E24, E32, E40, E48, F7, F14, F21, F28 and F35 are all electrically connected to the pin 4 of the chip U3 in the LED driving circuit; The second ends of the light emitting diodes E1, E2, E3, E4, E5, E6, E7 and E8 are all electrically connected to the pin 5 of the chip U3 in the LED driving circuit; The second ends of the light emitting diodes E9, E10, E11, E12, E13, E14, E15 and E16 are all electrically connected to the pin 6 of the chip U3 in the LED driving circuit; The second ends of the light emitting diodes E17, E18, E19, E20, E21, E22, E23 and E24 are all electrically connected to the pin 7 of the chip U3 in the LED driving circuit; The second ends of the light emitting diodes E25, E26, E27, E28, E29, E30, E31 and E32 are all electrically connected to the pin 8 of the chip U3 in the LED driving circuit; The second ends of the light emitting diodes E33, E34, E35, E36, E37, E38, E39 and E40 are all electrically connected to the pin 9 of the chip U3 in the LED driving circuit; The second ends of the light emitting diodes E41, E42, E43, E44, E45, E46, E47 and E48 are all electrically connected to the pin 10 of the chip U3 in the LED driving circuit; The second ends of the light emitting diodes W7, F1, F2, F3, F4, F5, F6 and F7 are all electrically connected to the pin 13 of the chip U3 in the LED driving circuit; The second ends of the light emitting diodes W8, F8, F9, F10, F11, F12, F13 and F14 are all electrically connected to the pin 14 of the chip U3 in the LED driving circuit; The second ends of the light emitting diodes W9, F15, F16, F17, F18, F19, F20 and F21 are all electrically connected to the pin 15 of the chip U3 in the LED driving circuit; The second ends of the light emitting diodes W10, F22, F23, F24, F25, F26, F27 and F28 are all electrically connected to the pin 16 of the chip U3 in the LED driving circuit; The second ends of the light emitting diodes W11, F29, F30, F31, F32, F33, F34 and F35 are all electrically connected to the pin 18 of the chip U3 in the LED driving circuit; The first ends of the light emitting diodes G1, G9, G17, G25, G33, W13, W14, W6 and W12 are all electrically connected to the pin 25 of the chip U4 in the LGD driving circuit; The first ends of the light emitting diodes G2, G10, G18, G26, G34, H1, H8, H15, H22, B36 and F36 are electrically connected to the pin 26 of the chip U4 in the LGD driving circuit; The first ends of the light emitting diodes G3, G11, G19, G27, G35, H2, H9, H16, H23, B37 and F37 are all electrically connected to the pin 27 of the chip U4 in the LGD driving circuit; The first ends of the light emitting diodes G4, G12, G20, G28, G36, H3, H10, H17, H24, B38 and F38 are all electrically connected to the pin 28 of the chip U4 in the LGD driving circuit; The first ends of the light emitting diodes G5, G13, G21, G29, G37, H4, H11, H18, H25, B39 and F39 are all electrically connected to pin 1 of chip U4 in the LGD driving circuit; The first ends of the light emitting diodes G6, G14, G22, G30, G38, H5, H12, H19, H26, B40 and F40 are all electrically connected to the pin 2 of the chip U4 in the LGD driving circuit; The first ends of the light emitting diodes G7, G15, G23, G31, G39, H6, H13, H20, H27, B41 and F41 are all electrically connected to the pin 3 of the chip U4 in the LGD driving circuit; The first ends of the light emitting diodes G8, G16, G24, G32, G40, H7, H14, H21, H28, B42 and F42 are all electrically connected to the pin 4 of the chip U4 in the LGD driving circuit; The second ends of the light emitting diodes G1, G2, G3, G4, G5, G6, G7 and G8 are all electrically connected to the pin 5 of the chip U4 in the LGD driving circuit; The second ends of the light emitting diodes G9, G10, G11, G12, G13, G14, G15 and G16 are all electrically connected to the pin 6 of the chip U4 in the LGD driving circuit; The second ends of the light emitting diodes G17, G18, G19, G20, G21, G22, G23 and G24 are all electrically connected to the pin 7 of the chip U4 in the LGD driving circuit; The second ends of the light emitting diodes G25, G26, G27, G28, G29, G30, G31 and G32 are all electrically connected to the pin 8 of the chip U4 in the LGD driving circuit; The second ends of the light emitting diodes G33, G34, G35, G36, G37, G38, G39 and G40 are all electrically connected to the pin 9 of the chip U4 in the LGD driving circuit; The second ends of the light emitting diodes W13, H1, H2, H3, H4, H5, H6 and H7 are all electrically connected to the pin 10 of the chip U4 in the LGD driving circuit; The second ends of the light emitting diodes W14, H8, H9, H10, H11, H12, H13 and H14 are all electrically connected to the pin 13 of the chip U4 in the LGD driving circuit; The second ends of the light emitting diodes H15, H16, H17, H18, H19, H20 and H21 are all electrically connected to the pin 14 of the chip U4 in the LGD driving circuit; The second ends of the light emitting diodes H22, H23, H24, H25, H26, H27 and H28 are all electrically connected to the pin 15 of the chip U4 in the LGD driving circuit; The second ends of the light emitting diodes W6, B36, B37, B38, B39, B40, B41 and B42 are all electrically connected to the pin 16 of the chip U4 in the LGD driving circuit; The second ends of the light emitting diodes W12, F36, F37, F38, F39, F40, F41 and F42 are all electrically connected to the pin 18 of the chip U4 in the LGD driving circuit.

7. The LED dot matrix display module according to claim 2, characterized in that: The light ring control circuit includes magic lights LED1 to LED37, capacitors C4 to C15, capacitors C18 to C23, capacitors C27 to C38, capacitors C42 to C47 and capacitor C51, the magic lights LED1 to LED36 each include pin 1, pin 2, pin 3 and pin 4, the magic light LED37 includes pin 2, pin 3 and pin 4; Pins 4 of the magic lights LED1 to LED37 are all electrically connected to the ground wire; Pin 3 of the magic light LED1 is electrically connected to pin 26 of chip U1 in the MCU circuit; Pin 2 of the magic light LED1 and the first end of the capacitor C4 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED1 is electrically connected to pin 3 of the magic light LED2; Pin 2 of the magic light LED2 and the first end of the capacitor C5 are electrically connected to the VCC5V terminal, and pin 1 of the magic light LED2 is electrically connected to pin 3 of the magic light LED3; Pin 2 of the magic light LED3 and the first end of the capacitor C6 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED3 is electrically connected to pin 3 of the magic light LED4; Pin 2 of the magic light LED4 and the first end of the capacitor C7 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED4 is electrically connected to pin 3 of the magic light LED5; Pin 2 of the magic light LED5 and the first end of the capacitor C8 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED5 is electrically connected to pin 3 of the magic light LED6; Pin 2 of the magic light LED6 and the first end of the capacitor C9 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED6 is electrically connected to pin 3 of the magic light LED7; Pin 2 of the magic light LED7 and the first end of the capacitor C10 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED7 is electrically connected to pin 3 of the magic light LED8; Pin 2 of the magic light LED 8 and the first end of the capacitor C11 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 8 is electrically connected to pin 3 of the magic light LED 9; Pin 2 of the magic light LED 9 and the first end of the capacitor C12 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 9 is electrically connected to pin 3 of the magic light LED 10; Pin 2 of the magic light LED 10 and the first end of the capacitor C13 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 10 is electrically connected to pin 3 of the magic light LED 11; Pin 2 of the magic light LED 11 and the first end of the capacitor C14 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 11 is electrically connected to pin 3 of the magic light LED 12; Pin 2 of the magic light LED 12 and the first end of the capacitor C15 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 12 is electrically connected to pin 3 of the magic light LED 13; Pin 2 of the magic light LED 13 and the first end of the capacitor C18 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 13 is electrically connected to pin 3 of the magic light LED 14; Pin 2 of the magic light LED 14 and the first end of the capacitor C19 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 14 is electrically connected to pin 3 of the magic light LED 15; Pin 2 of the magic light LED 15 and the first end of the capacitor C20 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 15 is electrically connected to pin 3 of the magic light LED 16; Pin 2 of the magic light LED 16 and the first end of the capacitor C21 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 16 is electrically connected to pin 3 of the magic light LED 17; Pin 2 of the magic light LED 17 and the first end of the capacitor C22 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 17 is electrically connected to pin 3 of the magic light LED 18; Pin 2 of the magic light LED 18 and the first end of the capacitor C23 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 18 is electrically connected to pin 3 of the magic light LED 19; Pin 2 of the magic light LED 19 and the first end of the capacitor C27 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 19 is electrically connected to pin 3 of the magic light LED 20; Pin 2 of the magic light LED 20 and the first end of the capacitor C28 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 20 is electrically connected to pin 3 of the magic light LED 21; Pin 2 of the magic light LED 21 and the first end of the capacitor C29 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 21 is electrically connected to pin 3 of the magic light LED 22; Pin 2 of the magic light LED 22 and the first end of the capacitor C30 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 22 is electrically connected to pin 3 of the magic light LED 23; Pin 2 of the magic light LED 23 and the first end of the capacitor C31 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 23 is electrically connected to pin 3 of the magic light LED 24; Pin 2 of the magic light LED 24 and the first end of the capacitor C32 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 24 is electrically connected to pin 3 of the magic light LED 25; Pin 2 of the magic light LED 25 and the first end of the capacitor C33 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 25 is electrically connected to pin 3 of the magic light LED 26; Pin 2 of the magic light LED 26 and the first end of the capacitor C34 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 26 is electrically connected to pin 3 of the magic light LED 27; Pin 2 of the magic light LED 27 and the first end of the capacitor C35 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 27 is electrically connected to pin 3 of the magic light LED 28; Pin 2 of the magic light LED 28 and the first end of the capacitor C36 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 28 is electrically connected to pin 29 of the magic light LED 29; Pin 2 of the magic light LED 29 and the first end of the capacitor C37 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 29 is electrically connected to pin 3 of the magic light LED 30; Pin 2 of the magic light LED 30 and the first end of the capacitor C38 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 30 is electrically connected to pin 3 of the magic light LED 31; Pin 2 of the magic light LED 31 and the first end of the capacitor C42 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 31 is electrically connected to pin 3 of the magic light LED 32; Pin 2 of the magic light LED 32 and the first end of the capacitor C43 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 32 is electrically connected to pin 3 of the magic light LED 33; Pin 2 of the magic light LED 33 and the first end of the capacitor C44 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 33 is electrically connected to pin 3 of the magic light LED 34; Pin 2 of the magic light LED 34 and the first end of the capacitor C45 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 34 is electrically connected to pin 3 of the magic light LED 35; Pin 2 of the magic light LED 35 and the first end of the capacitor C46 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 35 is electrically connected to pin 3 of the magic light LED 36; Pin 2 of the magic light LED 36 and the first end of the capacitor C47 are both electrically connected to the VCC5V terminal, and pin 1 of the magic light LED 36 is electrically connected to pin 3 of the magic light LED 37; Pin 2 of the magic light LED37 and the first end of the capacitor C51 are both electrically connected to the VCC5V terminal; The second ends of the capacitors C4 to C15, the capacitors C18 to C23, the capacitors C27 to C38, the capacitors C42 to C47 and the capacitor C51 are all electrically connected to the ground line.

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