Electronic display device circuit, electronic display device and electronic price tag system

Abstract

The invention provides an electronic display device circuit, an electronic display device and an electronic price tag system, and the circuit comprises a main control module which is used for receiving an electronic signal corresponding to graphic and text information; the driving signal generation module is connected with the main control module and is used for receiving the electronic signal and outputting an LED driving signal; the driving signal amplification module is connected with the driving signal generation module and is used for amplifying the LED driving signal; the LED dot matrix driving module is connected with the driving signal amplification module and is used for receiving the amplified LED driving signal and outputting an LED dot matrix driving signal; and the LED dot matrix display module is connected with the LED dot matrix driving module so as to drive the LED dot matrix display module to be lightened through the LED dot matrix signal, so that the LED dot matrix display module displays the graphic and text information. Through the structure, the technical effect of improving the visual angle of the electronic display device can be achieved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to an electronic display device circuit, an electronic display device and an electronic price tag system. Background Art

[0002] With the development of electronic information display technology, the application of electronic display devices has become more and more extensive. For example, electronic display devices are applied to electronic label display, and can be applied to price display and product information display on commodity shelves.

[0003] In the related art, electronic price tags usually use ink screen electronic price tags or LCD electronic price tags to realize information display of electronic display devices.

[0004] However, the applicant discovered during implementation that the related art at least has the problem of small viewing angle of the electronic display device. Summary of the invention

[0005] Based on this, the purpose of this application is to solve at least one of the above-mentioned technical defects, especially the technical defect of small viewing angle in the prior art. This application provides an electronic display device circuit, an electronic display device and an electronic price tag system.

[0006] In a first aspect, the present application provides an electronic display device circuit, the circuit comprising:

[0007] A main control module, used for receiving electronic signals corresponding to graphic information;

[0008] A driving signal generating module is connected to the main control module, and is used to receive electronic signals and output LED driving signals;

[0009] A driving signal amplifying module, connected to the driving signal generating module, for amplifying the LED driving signal;

[0010] The LED dot matrix driving module is connected to the driving signal amplifying module, and is used to receive the amplified LED driving signal and output the LED dot matrix driving signal;

[0011] The LED dot matrix display module is connected to the LED dot matrix driving module to drive the LED dot matrix display module to light up through the LED dot matrix signal, so that the LED dot matrix display module displays graphic information.

[0012] In one embodiment, the driving signal amplification module includes:

[0013] A signal amplifying unit, the input end of which is connected to the driving signal generating module, and the output end of which is connected to the LED dot matrix driving module;

[0014] The energy storage and filtering unit is connected to the signal amplifying unit to store energy and filter the signal amplifying unit.

[0015] In one embodiment, the circuit further comprises:

[0016] A first filtering module, the input end of which is connected to the output end of the signal amplifying unit, and the output end of which is connected to the LED dot matrix driving module;

[0017] The first filtering module is used to filter the amplified LED driving signal output by the signal amplifying unit.

[0018] In one embodiment, the LED dot matrix display module includes a plurality of LED units; the LED dot matrix driving module includes:

[0019] A driving signal receiving unit, the input end of which is connected to a driving signal amplifying module, and is used to stabilize the amplified LED driving signal;

[0020] The LED signal sending unit has an input end connected to the output end of the driving signal receiving unit, and an output end connected to multiple LED units. The LED signal sending unit is used to drive the multiple LED units to light up.

[0021] In one embodiment, the LED unit includes a red light unit, a green light unit and a blue light unit; and the LED signal sending unit includes:

[0022] A red light signal sending unit, the input end of which is connected to the output end of the driving signal receiving unit, and the output end of which is connected to the red light unit;

[0023] A green light signal sending unit, the input end of which is connected to the output end of the driving signal receiving unit, and the output end of which is connected to the green light unit;

[0024] The blue light signal sending unit has an input end connected to the output end of the driving signal receiving unit, and an output end connected to the blue light unit.

[0025] In one embodiment, the circuit further comprises:

[0026] A second filtering module, wherein the input end is connected to the output end of the driving signal receiving unit, and the output end is connected to the input end of the LED signal sending unit;

[0027] The second filtering module is used to filter the stable LED driving signal output by the driving signal receiving unit.

[0028] In one embodiment, the LED dot matrix display module includes a plurality of dot matrix display units arranged in rows, the dot matrix display units include dot matrix display sub-units arranged in columns, and the dot matrix display sub-units include a plurality of LED units.

[0029] In one embodiment, the LED dot matrix driving module includes an LED power driving unit; the LED dot matrix display module includes a plurality of dot matrix display units;

[0030] The input end of the LED power drive unit is connected to the drive signal amplification module, and the LED power drive unit is used to receive the LED power control signal output by the drive signal amplification module and output the LED power drive signal;

[0031] The output ends of the LED power drive unit are respectively connected to a plurality of dot matrix display sub-units, so that the voltage inputs of the plurality of dot matrix display sub-units are controlled by the LED power drive signal.

[0032] In one embodiment, the driving signal amplifying module includes a plurality of driving signal amplifying units; the circuit further includes:

[0033] A drive selection module, the input end of which is connected to the drive signal generation module, and the output end of which is respectively connected to a plurality of drive signal amplification units;

[0034] The driving selection module is used to control the plurality of driving signal amplifying units to receive driving signals.

[0035] In one embodiment, the circuit further comprises:

[0036] The parameter storage module is connected to the driving signal generating module and is used to store the selection parameters of the driving selection module.

[0037] In one embodiment, the circuit further comprises:

[0038] The test module is connected to the drive signal generation module and is used to drive the drive signal generation module to generate a test signal to light up the test LED dot matrix display module.

[0039] In one embodiment, the circuit comprises:

[0040] A power supply module, connected to the main control module and the drive signal generation module respectively, and also used to connect an external power supply;

[0041] The power supply module converts the voltage of the external power supply and outputs the converted voltage to power the main control module and the drive signal generation module.

[0042] In a second aspect, the present application provides an electronic display device, the device comprising:

[0043] case;

[0044] As for the electronic display device circuit mentioned above, the electronic display device circuit is arranged in the housing.

[0045] In a third aspect, the present application provides an electronic price tag system, the system comprising:

[0046] The electronic display device as described above;

[0047] A controller is communicatively connected to the electronic display device.

[0048] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0049] The electronic display device circuit, electronic display device and electronic price tag system provided by the present application include a main control module, a drive signal generation module, a drive signal amplification module, an LED dot matrix drive module and an LED dot matrix display module; wherein, the electronic signal of the graphic information to be displayed is received by the main control module, and the electronic signal is transmitted to the drive signal generation module connected thereto; the drive signal generation module generates an LED drive signal for driving the LED to emit light, and by transmitting the LED drive signal to the drive signal amplification module, the LED drive signal can be amplified so that the LED can display the graphic content in an all-round viewing angle after being lit, thereby improving the viewing angle of the electronic display device. By connecting the LED dot matrix drive module with the drive signal amplification module, and connecting the LED dot matrix display module with the LED dot matrix drive module, the LED dot matrix display module can be lit by the amplified LED drive signal to realize the display of graphic information. In this way, compared with the traditional technology, the present application uses the LED dot matrix to realize the display of graphic information, which can significantly improve the brightness of the screen, and through the above-mentioned structure and signal processing, the technical effect of improving the viewing angle of the electronic display device can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0051] Figure 1 A schematic diagram of the structure of an electronic display device circuit provided in an embodiment of the present application;

[0052] Figure 2 A schematic diagram of the structure of the main control module provided in the embodiment of the present application;

[0053] Figure 3 A schematic diagram of the structure of a drive signal generating module provided in an embodiment of the present application;

[0054] Figure 4 A schematic diagram of the structure of a drive signal amplification module provided in an embodiment of the present application;

[0055] Figure 5 A schematic diagram of the structure of a first filtering module provided in an embodiment of the present application;

[0056] Figure 6 A schematic diagram of the structure of a driving signal receiving unit provided in an embodiment of the present application;

[0057] Figure 7 A schematic diagram of the structure of a red light signal sending unit provided in an embodiment of the present application;

[0058] Figure 8 A schematic diagram of the structure of a green light signal sending unit provided in an embodiment of the present application;

[0059] Fig. 9 A schematic diagram of the structure of a blue light signal sending unit provided in an embodiment of the present application;

[0060] Fig.10 A schematic diagram of the structure of a second filtering module provided in an embodiment of the present application;

[0061] Fig.11 A schematic diagram of the LED layout provided in the embodiment of the present application Figure 1 ;

[0062] Fig.12 A schematic diagram of the LED layout provided in the embodiment of the present application Figure 2 ;

[0063] Fig.13 A schematic diagram of the structure of an LED power drive unit provided in an embodiment of the present application;

[0064] Fig.14 A schematic diagram of the structure of a drive selection module provided in an embodiment of the present application;

[0065] Fig.15 A schematic diagram of the structure of a parameter storage module provided in an embodiment of the present application;

[0066] Fig.16 A schematic diagram of the structure of the test module provided in the embodiment of the present application;

[0067] Fig.17 A schematic diagram of the structure of the power supply module provided in an embodiment of the present application.

[0068] Reference numerals:

[0069] 10. Main control module; 101. Main control chip; 102. Energy storage filter circuit; 103. Bluetooth antenna unit; 104. Bluetooth antenna matching unit; 105. Reset unit; 106. Crystal oscillator unit;

[0070] 20. driving signal generating module; 201. driving signal generating chip;

[0071] 30. driving signal amplifying module; 301. signal amplifying unit; 302. energy storage filtering unit;

[0072] 40. LED dot matrix driving module; 401. driving signal receiving unit; 402. red light signal sending unit; 403. green light signal sending unit; 404. blue light signal sending unit; 405. LED power driving unit;

[0073] 50. LED dot matrix display module;

[0074] 60. A first filtering module;

[0075] 70. A second filtering module;

[0076] 80. Drive selection module;

[0077] 90. Parameter storage module;

[0078] 91. Test module;

[0079] 92. Power supply module. DETAILED DESCRIPTION

[0080] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0081] Electronic display devices play a very important role in the field of information display. Electronic display devices can update the information display content at any time and are easy to use. For example, electronic price tags can be used for price display and product information display on commodity shelves, and the electronic price tag information can be modified at any time.

[0082] In traditional technology, electronic price tags usually include ink screen electronic price tags or normally powered LCD electronic price tags. However, ink screen electronic price tags have low power consumption, unclear display, small fonts, and are suitable for indoor scenes; LCD electronic price tags can display in color, but the screen size is small, and when the ambient light is bright, it cannot display information in all directions, so people cannot see the screen clearly, and the viewing angle is small.

[0083] Based on this, in order to solve the above technical problems, the present application provides an electronic display device circuit, an electronic display device and an electronic price tag system. Through the display circuit of the LED structure, it can meet the needs of more customer usage scenarios. The present application uses the LED dot matrix as a display unit, which can significantly improve the brightness of the screen compared with the traditional technology, and through the driving signal amplification module, the LED driving signal can be amplified so that the LED can display the graphic content in an all-round viewing angle after it is lit, thereby improving the viewing angle of the electronic display device. In this way, the present application can be applied to scenes with higher brightness such as outdoor or semi-outdoor, meeting the needs of more usage scenarios.

[0084] In an exemplary embodiment, Figure 1 A schematic diagram of the structure of the electronic display device circuit provided in the embodiment of the present application is shown in FIG. Figure 1 As shown, an electronic display device circuit is provided, which includes a main control module 10, a drive signal generating module 20, a drive signal amplifying module 30, an LED dot matrix driving module 40, and an LED dot matrix display module 50. It should be noted that Figure 1 It is shown that multiple modules are connected through multiple ports, but in actual applications, other numbers of ports can be set to connect with each other according to actual needs, that is, Figure 1 The number of ports (pins) connected is not a limitation of this application.

[0085] Specifically, the main control module 10 is used to receive electronic signals corresponding to graphic information.

[0086] The main control module 10 may include a device module as a main control, for example, an MCU (Microcontroller Unit) as a main control. The main control module 10 may be connected to an external controller, communicate with the external controller, and receive an externally transmitted electronic signal; for example, the main control module 10 may be connected to an external controller via Bluetooth, that is, the single-chip microcomputer of the main control module 10 may have a Bluetooth function.

[0087] Graphic information may refer to picture information and / or text information that needs to be played and displayed, that is, the graphic information includes picture information and / or text information. When the electronic display device is used as an electronic price tag, the graphic information may be price information, product information, etc. of the commodity.

[0088] Electronic signals refer to signals transmitted by communication.

[0089] Exemplarily, the main control module 10 includes a single-chip microcomputer as a main control, and the single-chip microcomputer has a wireless communication function, for example, a Bluetooth function. After receiving the playback content and instructions transmitted externally through wireless communication, the content is pushed to the driving signal generating module 20 of the electronic display device circuit through SPI communication as needed to realize the information playback of the LED.

[0090] Specifically, the driving signal generating module 20 is connected to the main control module 10, and is used to receive electronic signals and output LED driving signals.

[0091] The drive signal generating module 20 may be a module for generating an LED drive signal for an LED matrix. The LED drive signal may be used to drive the LEDs included in the LED matrix to light up. The LED drive signal may be used to drive some LEDs to light up so that the lighted LEDs form the desired graphic content to be displayed.

[0092] The driving signal generating module 20 may integrate RGB data of multiple channels, so that the driving signal generating module 20 may process the color data of the image information.

[0093] Exemplarily, the drive signal generation module 20 is connected to the main control module 10, and the drive signal generation module 20 can realize SPI communication with the main control module 10. The drive signal generation module 20 can receive the electronic signal corresponding to the graphic information transmitted by the main control module 10 through SPI communication. The drive signal generation module 20 can generate and output the LED drive signal by processing the received SPI communication data, and drive the LED dot matrix to light up through the LED drive signal to realize the display of the graphic information. For example, the drive signal generation module 20 can realize the display of the LED dot matrix by decomposing the graphic information into each pixel, and realizing the state display of the color of each pixel through PWM driving. The drive signal generation module 20 can improve the display refresh rate of the electronic display device by processing the color of each pixel in parallel.

[0094] Specifically, the driving signal amplifying module 30 is connected to the driving signal generating module 20 and is used to amplify the LED driving signal.

[0095] The driving signal amplifying module 30 may refer to a circuit module for amplifying an LED driving signal.

[0096] Exemplarily, the driving signal amplifying module 30 is connected to the driving signal generating module 20 , and the driving signal amplifying module 30 can receive the LED driving signal transmitted by the driving signal generating module 20 , and amplify the received LED driving signal.

[0097] The driving signal amplification module 30 may include an integrated IC chip with a signal amplification function. The driving signal amplification chip can be used to amplify the LED driving signal and output the amplified LED driving signal so that the amplified LED driving signal can drive the LED lamp beads in the LED dot matrix, ensuring that the lit LED can display graphic information in all directions, thereby improving the viewing angle of the electronic display device.

[0098] For example, the LED lamp can be a 180-degree three-color RGB LED lamp bead. The LED driving signal can be amplified so that the LED signal drives the 180-degree LED lamp bead to light up, so that the 180-degree viewing angle can be visible in all directions, that is, the content of the display screen can be seen in all directions of 180 degrees, thereby improving the viewing angle of the electronic display device.

[0099] Specifically, the LED dot matrix driving module 40 is connected to the driving signal amplifying module 30, and is used to receive the amplified LED driving signal and output the LED dot matrix driving signal.

[0100] The LED dot matrix driving module 40 may refer to a driving module for driving the LED dot matrix. For example, the LED dot matrix driving module 40 may control the on / off and brightness state of each LED lamp bead. The LED dot matrix driving module 40 may include multiple submodules. For example, for three-color LED lamp beads, different submodules may be used to control and drive the three different colors of RGB lamp beads.

[0101] The LED dot matrix driving signal may refer to a signal that drives the LED dot matrix to light up. The LED dot matrix driving signal may be a level signal, and the level signal may be used to control the on and off of the LED to realize the on and off control of the LED.

[0102] Exemplarily, the LED dot matrix driving module 40 can be connected to the driving signal amplifying module 30, receive the amplified LED driving signal transmitted by the driving signal amplifying module 30, and the LED dot matrix driving module 40 can process the amplified LED driving signal, generate and output the LED dot matrix driving signal to control the lighting of the LED lamp beads in the LED dot matrix driving signal.

[0103] For example, for three-color RGB LED lamp beads, the LED dot matrix driving module 40 may include multiple LED dot matrix driving submodules, and the multiple LED dot matrix driving submodules are used to control the lighting of the red light LED, the green light LED, and the blue light LED respectively. In this way, the lighting of the LED lamp beads driving the LED dot matrix can be effectively controlled, so as to realize the display of graphic information. The graphic display of the electronic display device through LED can significantly improve the brightness of the screen and solve the problem of not being able to see the screen clearly when the ambient light is relatively bright.

[0104] Specifically, the LED dot matrix display module 50 is connected to the LED dot matrix driving module 40 to drive the LED dot matrix display module 50 to light up through the LED dot matrix signal, so that the LED dot matrix display module 50 displays graphic information.

[0105] The LED dot matrix display module 50 may refer to a display module having an LED dot matrix. The LED dot matrix may refer to a circuit array of an LED light board layout. Graphical display may be achieved by controlling the on and off of LEDs in the LED dot matrix.

[0106] Exemplarily, the LED dot matrix display module 50 is connected to the LED dot matrix driving module 40, receives the LED dot matrix driving signal output by the LED dot matrix driving module 40, and realizes the lighting of the LED lamp beads by receiving the LED dot matrix driving signal, so that the graphic information to be displayed can be formed.

[0107] Optionally, in the LED dot matrix display module 50, each group of LED units may include a red LED, a green LED, and a blue LED, and the color display state of the pixel corresponding to the point can be realized by driving at least one of the three LED beads to light up. In this way, the drive control of the display color of each pixel can be realized, thereby realizing the display of the LED dot matrix.

[0108] In this embodiment, through the above structure and signal processing, the LED dot matrix can be used to display graphic information, which can significantly improve the brightness of the screen and solve the problem that the screen cannot be seen clearly or the display is unclear when the ambient light is relatively bright. The LED driving signal is amplified by the driving signal amplification module 30 so that the LED can display the graphic content in an all-round viewing angle after it is lit, thereby improving the viewing angle of the electronic display device and solving the problem of small viewing angle of the electronic display device in the related art.

[0109] In some specific embodiments, Figure 2 A schematic diagram of the structure of the main control module provided in the embodiment of the present application, Figure 3 A schematic diagram of the structure of a drive signal generating module provided in an embodiment of the present application.

[0110] like Figure 2 As shown, the main control module 10 includes: a main control chip 101 , an energy storage filter circuit 102 , a Bluetooth antenna unit 103 , a Bluetooth antenna matching unit 104 , a reset unit 105 , and a crystal oscillator unit 106 .

[0111] The main control chip 101 can be a unit machine with Bluetooth function. After receiving the external transmission of the playback content and instructions through Bluetooth communication, the main control chip 101 pushes the content to the user through SPI communication as needed. Figure 3The display part of the driving signal generating chip 201 in the display device.

[0112] The energy storage filter circuit 102 may include multiple capacitors and has storage and filtering functions. The Bluetooth antenna unit 103 is used to achieve Bluetooth communication connection with an external controller. The Bluetooth antenna matching unit 104 is used to ensure that the main control chip 101 communicates effectively and stably with the outside. The reset unit 105 is used to provide a reset function for the main control chip 101. The crystal oscillator unit 106 is used to provide the clock frequency required for the main control chip 101 to work.

[0113] Among them, capacitor C41, capacitor C42, capacitor C48, capacitor C54, capacitor C55, capacitor C52, and capacitor C56 have the functions of storing charge and filtering. Capacitor C43, capacitor C44, capacitor C47, capacitor C45, resistor R32, capacitor C46, ​​and inductor L1 are Bluetooth antenna matching circuits (Bluetooth antenna matching units).

[0114] The connection relationship between the various units included in the main control module 10 can be as follows Figure 2 As shown, it should be noted that Figure 2 The partial connection relationship of each unit of the main control module is shown in FIG. 1 , but in actual application, other connection relationships of the main control module can be set according to actual needs, and Figure 2 The part of the main control chip 101 shown in the figure is connected to the pins related to the unit provided in the embodiment of the present application, and the other pins not shown can be set according to the actual situation. Figure 2 The examples shown are not intended to limit the main control module of this application.

[0115] like Figure 3 As shown, the driving signal generating module 20 includes a driving signal generating chip 201. The driving signal generating chip 201 can integrate RGB data of 16 channels, decompose the graphic information into each pixel, and realize the state display of the color of each pixel through PWM driving, thereby realizing the display of the LED dot matrix. The driving signal generating module 20 can improve the display refresh rate of the electronic display device by processing the color of each pixel in parallel.

[0116] like Figure 3 As shown, R1~B16, B1~B16, G1~G16 are the LED driving signal output pins of the driving signal generation chip 201, that is, they integrate 16 channels of RGB data. Figure 3 Some pins are shown, and pins not shown are omitted. It can be understood that the pins not shown can have the same or similar settings as the pins shown.

[0117] It should be noted that Figure 3FIG. 2 shows a partial connection relationship of the driving signal generating module 20, but in actual application, other connection relationships of the driving signal generating module 20 can be set according to actual needs, and Figure 3 The pins of the driving signal generating module 20 and other unit module connection structures provided in the embodiment of the present application are shown in the figure. Other pins not shown can be set according to actual conditions. Figure 3 The example shown is not intended to limit the driving signal generating module 20 of the present application.

[0118] In this embodiment, by Figure 2 as well as Figure 3 The structure in can effectively receive the electronic signal of the graphic information and process the graphic information, generate the LED driving signal, so as to drive the LED dot matrix to light up and display the graphic information, thereby significantly improving the brightness of the screen and improving the viewing angle.

[0119] In an exemplary embodiment, the driving signal amplification module includes:

[0120] A signal amplifying unit, the input end of which is connected to the driving signal generating module, and the output end of which is connected to the LED dot matrix driving module;

[0121] The energy storage and filtering unit is connected to the signal amplifying unit to store energy and filter the signal amplifying unit.

[0122] The signal amplifying unit may refer to a unit for amplifying and processing an LED driving signal, and the energy storage and filtering unit may refer to a unit for storing energy and / or filtering for the signal amplifying unit.

[0123] Exemplarily, the input end of the signal amplifying unit is connected to the driving signal generating module for receiving the LED driving signal; the output end of the signal amplifying unit is connected to the LED matrix driving module for outputting the amplified LED driving signal. The energy storage filter unit can be connected between the working signal input pin of the signal amplifying unit and the power supply, that is, the working signal input pin of the signal amplifying unit can be connected to the power supply through the energy storage filter unit.

[0124] In this embodiment, the above structure can effectively amplify the LED driving signal, thereby facilitating improving the viewing angle of the LED matrix, that is, improving the viewing angle of the electronic display device.

[0125] Optionally, Figure 4 This is a schematic diagram of the structure of the drive signal amplification module provided in the embodiment of the present application. Figure 4 As shown, the driving signal amplifying module 30 includes a signal amplifying unit 301 and an energy storage filtering unit 302 .

[0126] In practical applications, the signal amplifying unit 301 may be a signal amplifying chip U1 or U13. Figure 4 The pins on the left end of (a) and (b) are input pins, which can be connected to the pins of the chip in the driving signal generating module 20; the pins on the right end of (a) and (b) are output pins, which can be connected to the LED dot matrix driving module 40.

[0127] The pins A0~A7 and B0~B7 in the signal amplifier chip are Figure 3 The connection relationship can be determined by the signal identification on the pin, for example, Figure 4 The A0 pin in (a) is connected to Figure 2 LINE_A connection in the CPU_A signal transmission is realized. The same is true for other pins and transmission signals. For details, please refer to Figure 3 and Figure 4 .in, Figure 4 (a) and (b) may be the same chip, and their working principles may be the same. The structures shown in (a) and (b) may be used in parallel.

[0128] For example, the signal amplifier chip mainly amplifies the signal sent by the CPU, wherein U1 and U13 are signal amplifier integrated IC chips. Capacitors C1, C3, C9, and C14 provide charge storage and filtering functions for the drive signal amplifier module 30. The left side of the chip is the input signal, and the right side is the output amplified signal.

[0129] It should be noted that Figure 4 FIG. 4 shows a partial connection relationship between the various units of the driving signal amplifying module 30, but in actual applications, other connection relationships of the driving signal amplifying module 30 can be set according to actual needs, and Figure 4 The pins of the driving signal amplifying module 30 and other unit module connection structures provided in the embodiment of the present application are shown in the figure. Other pins not shown can be set according to actual conditions. Figure 4 The example shown is not intended to limit the driving signal amplifying module 30 of the present application.

[0130] In this embodiment, through the above structure, the signal amplification chip can provide an amplified LED driving signal for the subsequently connected modules, thereby facilitating the improvement of the viewing angle of the electronic display device.

[0131] In an exemplary embodiment, the circuit further includes:

[0132] A first filtering module, the input end of which is connected to the output end of the signal amplifying unit, and the output end of which is connected to the LED dot matrix driving module;

[0133] The first filtering module is used to filter the amplified LED driving signal output by the signal amplifying unit.

[0134] The first filtering module may refer to a module for filtering the output amplified LED driving signal.

[0135] Exemplarily, the input end of the first filter module can be connected to the output end of the signal amplification unit for filtering the amplified LED drive signal. The output end of the first filter module can be connected to the LED matrix drive module for outputting the amplified and filtered LED drive signal.

[0136] Optionally, the first filtering module may include a plurality of first filtering units, which are used to filter the plurality of amplified LED driving signals output by the signal amplifying unit respectively.

[0137] In this embodiment, the amplified LED driving signal is filtered by the first filtering module, which can ensure that the amplified LED driving signal has relatively good quality, thereby improving the quality of circuit signal transmission of the electronic display device.

[0138] Optionally, Figure 5 A schematic diagram of the structure of the first filtering module provided in the embodiment of the present application is shown in FIG. Figure 5 As shown, the first filtering module 60 may be an RC low-pass filter, and the first filtering module 60 includes a resistor and a capacitor. Figure 5 The left input connection of each filter unit Figure 4 The right output pin of the signal amplifier chip in the figure can be specifically determined by the signal identifier in the figure, such as Figure 5 JR1 connection Figure 4 JR1 (B5 pin) in the middle, other pins and transmission signals are the same, please refer to Figure 4 and Figure 5 .

[0139] See also Figure 5 The first first filtering unit can include a connected resistor R69 and a capacitor C95 to form a filtering circuit, and output through the right end. The other filtering units also include capacitors and resistors. For example, the right-side ports such as A, B, C, R1_1_1 are all used as outputs of the first filtering module 60 and can be connected to the LED dot matrix driving module 40.

[0140] In this embodiment, through the above structure, an RC low-pass filter circuit can be formed, which is conducive to filtering the amplified LED driving signal output by the signal amplifying unit 301, thereby improving the quality of the LED driving signal.

[0141] In an exemplary embodiment, the LED dot matrix display module includes a plurality of LED units; the LED dot matrix driving module includes:

[0142] A driving signal receiving unit, the input end of which is connected to the driving signal amplifying module, and is used to stabilize the amplified LED driving signal;

[0143] The LED signal sending unit has an input end connected to the output end of the driving signal receiving unit, and an output end connected to multiple LED units. The LED signal sending unit is used to drive the multiple LED units to light up.

[0144] Among them, the LED unit may refer to a unit module including an LED. For example, the LED unit may include at least one red light LED, green light LED, and blue light LED. In this way, the LED unit can be used as a pixel point corresponding to the image and text, and the color display state of the pixel point corresponding to the point can be realized by lighting at least one LED bead among the red light LED, green light LED, and blue light LED.

[0145] Exemplarily, the input end of the driving signal receiving unit is connected to the driving signal amplifying module for receiving the amplified LED driving signal; the driving signal receiving unit generates and outputs a stable LED driving signal based on the amplified LED driving signal. As a receiving unit, the driving signal receiving unit can avoid the amplified LED driving signal being directly input into the LED signal sending unit to cause damage to the LED signal sending unit. The input end of the LED signal sending unit is connected to the output end of the driving signal receiving unit for receiving the amplified and stable LED driving signal; the output end of the LED signal sending unit is connected to multiple LED units. For example, the LED signal sending unit has multiple output ends, and the multiple output ends can be connected to multiple LED units in a one-to-one correspondence. The LED signal sending unit can generate and output an LED signal for each LED unit based on the LED driving signal, and the LED signal is used to drive multiple LED units to light up.

[0146] The LED signal sending unit may include a red light LED signal unit, a green light LED signal unit, and a blue light LED signal unit, which are respectively used to control the lighting of the red light LED, the green light LED, and the blue light LED.

[0147] In this embodiment, through the above-mentioned structure, the drive signal receiving unit is used to receive the amplified LED drive signal, which can stabilize the amplified LED drive signal, which is beneficial to transmit the LED drive signal to the LED signal sending unit, ensuring that the LED drive signal is not damaged, thereby facilitating improving the stability of the electronic display device circuit.

[0148] Optionally, Figure 6A schematic diagram of the structure of a driving signal receiving unit provided in an embodiment of the present application is shown in FIG. Figure 6 As shown, the driving signal receiving unit 401 may include driving signal receiving chips U14, U2, and U5. Figure 6 The pins on the left end of the drive signal receiving chip shown in (a), (b), and (c) are input pins, which can be used to receive the LED drive signal amplified by the drive signal amplification module 30. For example, the pins on the left end of the drive signal receiving chip can be connected to Figure 5 The right end output of the first filtering module 60 in FIG. Figure 5 , Figure 6 The signal identifiers in determine the connection relationship, for example, Figure 6 The A0 pin of the U14 chip can be connected to Figure 5 R1_1_1 in the figure realizes the transmission of R1_1_1 signal, and the same applies to other pins and transmission signals. Figure 6 Among them, (a), (b), and (c) can be the same chip, that is, U14, U2, and U5 can be the same chip, and their working principles can be the same. The structures shown in (a), (b), and (c) can be used in parallel.

[0149] Exemplarily, the driving signal receiving chip is mainly used to receive the amplified and filtered LED driving signal, and can stabilize the LED driving signal output to the LED signal sending unit.

[0150] It should be noted that Figure 6 FIG. 4 shows a partial connection relationship of each unit of the driving signal receiving unit, but in actual application, other connection relationships of the driving signal receiving unit 401 can be set according to actual needs, and Figure 6 The pins of the driving signal receiving unit 401 and other unit module connection structures provided in the embodiment of the present application are shown in the figure. Other pins not shown can be set according to actual conditions. Figure 6 The example shown is not intended to limit the driving signal receiving unit 401 of the present application.

[0151] In this embodiment, through the above-mentioned structure, the driving signal receiving chip can be used to stably amplify and filter the LED driving signal, which is beneficial to transmit the LED driving signal to the LED signal sending unit, ensuring that the LED driving signal is not damaged, thereby facilitating improving the stability of the electronic display device circuit.

[0152] In an exemplary embodiment, the LED unit includes a red light unit, a green light unit and a blue light unit; and the LED signal sending unit includes:

[0153] A red light signal sending unit, the input end of which is connected to the output end of the driving signal receiving unit, and the output end of which is connected to the red light unit;

[0154] A green light signal sending unit, the input end of which is connected to the output end of the driving signal receiving unit, and the output end of which is connected to the green light unit;

[0155] The blue light signal sending unit has an input end connected to the output end of the driving signal receiving unit, and an output end connected to the blue light unit.

[0156] The red light signal sending unit can be used to control the unit driving the red light LED, the green light signal sending unit can be used to control the unit driving the green light LED, and the blue light signal sending unit can be used to control the unit driving the blue light LED.

[0157] Exemplarily, the input end of the red light signal sending unit is connected to the output end of the driving signal receiving unit, and is used to receive the LED driving signal of the red light LED, and is also used to generate and output a red light LED signal for controlling the driving of the red light LED; the output end of the red light signal sending unit is connected to the red light unit, and is used to drive the red light LED to emit light through the red light LED signal.

[0158] The input end of the green light signal sending unit is connected to the output end of the driving signal receiving unit, and is used to receive the LED driving signal of the green light LED, and is also used to generate and output a green light LED signal for controlling the driving of the green light LED; the output end of the green light signal sending unit is connected to the green light unit, and is used to drive the green light LED to emit light through the green light LED signal.

[0159] The input end of the blue light signal sending unit is connected to the output end of the driving signal receiving unit, and is used to receive the LED driving signal of the blue light LED, and is also used to generate and output a blue light LED signal for controlling the driving of the blue light LED; the output end of the blue light signal sending unit is connected to the blue light unit, and is used to drive the blue light LED to emit light through the blue light LED signal.

[0160] In actual applications, the red light signal sending unit, the green light signal sending unit, and the blue light signal sending unit may respectively have multiple output ends, and the multiple output ends may be connected to multiple LED units (green light signal sending unit, green light signal sending unit, blue light signal sending unit) in one-to-one correspondence.

[0161] In this embodiment, through the structure of the red light signal sending unit, the green light signal sending unit, and the blue light signal sending unit, the corresponding LED driving signal can be effectively received, and the corresponding LED signal can be output to drive the LED lamp beads of the corresponding colors respectively. The electronic display device can display graphic information through the LED, thereby significantly improving the brightness of the screen and improving the viewing angle of the electronic display device.

[0162] Optionally, Figure 7 A schematic diagram of the structure of a red light signal sending unit provided in an embodiment of the present application; Figure 7 As shown, the red light signal sending unit 402 may include red light signal sending chips UR1, UR2, and UR8. Figure 7 The pins on the left side of the red light signal sending chip shown in (a), (b), and (c) are input pins and can be used for Figure 6 The receiving drive signal receiving unit 401 outputs the amplified and stabilized red light LED drive signal; the red light signal sending chip can generate and output the red light LED signal after receiving the red light LED drive signal. The pin on the right end of the red light signal sending chip is an output pin, which can be connected to the red light LED. For example, the OUT0 pin of the chip UR1 can be connected to the red light LED corresponding to 1R1 to realize the transmission of the 1R1 signal. The same applies to other pins and transmission signals. Among them, the 1R1 signal is used to drive the corresponding red light LED to light up.

[0163] in, Figure 7 Among them, (a), (b), and (c) can be the same chip, that is, UR1, UR2, and UR3 can be the same chip, and their working principles can be the same. The structures shown in (a), (b), and (c) can be used in parallel.

[0164] Optionally, Figure 8 A schematic diagram of the structure of a green light signal sending unit provided in an embodiment of the present application; Figure 8 As shown, the green light signal sending unit 403 may include green light signal sending chips UG1, UG2, and UG8. Figure 8 The pins on the left side of the green light signal sending chip shown in (a), (b), and (c) are input pins and can be used to receive Figure 6 The driving signal receiving unit 401 outputs the amplified and stabilized green light LED driving signal; the green light signal sending chip can generate and output the green light LED signal after receiving the green light LED driving signal. The pin on the right end of the green light signal sending chip is an output pin, which can be connected to the green light LED. For example, the OUT0 pin of the chip UG1 can be connected to the green light LED corresponding to 1G1 to realize the transmission of the 1G1 signal. The same applies to other pins and transmission signals. Among them, the 1G1 signal is used to drive the corresponding green light LED to light up.

[0165] in, Figure 8 Among them, (a), (b), and (c) can be the same chip, that is, UG1, UG2, and UG3 can be the same chip, and their working principles can be the same. The structures shown in (a), (b), and (c) can be used in parallel.

[0166] Optionally, Fig. 9 A schematic diagram of the structure of a blue light signal sending unit provided in an embodiment of the present application; Fig. 9As shown, the blue light signal sending unit 404 may include blue light signal sending chips UB1, UB2, and UB8. Fig. 9 The pins on the left side of the blue light signal sending chip shown in (a), (b), and (c) are input pins and can be used to receive Figure 6 The driving signal receiving unit 401 outputs the amplified and stabilized blue light LED driving signal; the blue light signal sending chip can generate and output the blue light LED signal after receiving the blue light LED driving signal. The pin on the right end of the blue light signal sending chip is an output pin, which can be connected to the blue light LED. For example, the OUT0 pin of the chip UB1 can be connected to the green light LED corresponding to 1B1 to realize the transmission of the 1B1 signal. The same applies to other pins and transmission signals. Among them, the 1B1 signal is used to drive the corresponding blue light LED to light up.

[0167] in, Fig. 9 Among them, (a), (b), and (c) can be the same chip, that is, UB1, UB2, and UB3 can be the same chip, and their working principles can be the same. The structures shown in (a), (b), and (c) can be used in parallel.

[0168] In this embodiment, through the above Figure 7 , Figure 8 , Fig. 9 The structure can effectively receive LED driving signals corresponding to RGB, and output LED signals corresponding to RGB, respectively, and drive LED lamp beads of corresponding colors respectively. The electronic display device can display graphic information through LED, thereby significantly improving the brightness of the screen and improving the viewing angle of the electronic display device.

[0169] It should be noted that Figure 7 , Figure 8 , Fig. 9 FIG. 4 shows a partial connection relationship of each unit of the LED signal sending unit, but in actual application, other connection relationships of the LED signal sending unit can be set according to actual needs, and Figure 7 , Figure 8 , Fig. 9 The LED signal sending unit part and the pins related to the other unit module connection structure provided in the embodiment of the present application are shown in the figure. Other pins not shown can be set according to actual conditions. Figure 7 , Figure 8 , Fig. 9 The examples shown are not intended to limit the LED signal sending unit of the present application.

[0170] In an exemplary embodiment, the circuit further comprises:

[0171] A second filtering module, wherein the input end is connected to the output end of the driving signal receiving unit, and the output end is connected to the input end of the LED signal sending unit;

[0172] The second filtering module is used to filter the stable LED driving signal output by the driving signal receiving unit.

[0173] The second filtering module may refer to a module for filtering the signal output by the driving signal receiving unit.

[0174] Exemplarily, the input end of the second filtering module can be connected to the output end of the driving signal receiving unit, for filtering the amplified and stabilized LED driving signal. The output end of the second filtering module can be connected to the input end of the LED signal sending unit, for outputting a signal after filtering the LED driving signal of the driving signal receiving unit, so that the LED signal sending unit receives a better quality LED driving signal.

[0175] Optionally, the second filtering module may include a plurality of second filtering units, which are used to filter the LED driving signals output by the driving signal receiving unit respectively.

[0176] In this embodiment, the amplified and stabilized LED driving signal is filtered by the second filtering module, which can ensure that the amplified and stabilized LED driving signal has relatively good quality, thereby improving the quality of circuit signal transmission of the electronic display device.

[0177] Optionally, Fig.10 A schematic diagram of the structure of the second filtering module provided in the embodiment of the present application is shown in FIG. Fig.10 As shown, the second filtering module 70 may be an RC low-pass filter, and the second filtering module 70 includes a resistor and a capacitor. Fig.10 The left input connection of each second filter unit Figure 6 The right output pin of the driving signal receiving chip in the figure can be specifically determined by the signal identification in the figure, such as, Fig.10 R1_1 connection in Figure 6 R1_1 (B0 pin), Fig.10 G1_1 connection in Figure 6 The same is true for G1_1 (B1 pin) in the figure. The same is true for other pins and transmission signals. For details, please refer to Figure 6 and Fig.10 .

[0178] See also Fig.10 The first second filter unit may include a connected resistor R56 and a capacitor C111 to form a filter circuit, and output through the right end, and the other filter units also include capacitors and resistors, and Fig.10 The right end outputs of the second filter units are connected to Figure 7 Red light signal sending chip, Figure 8 The green light signal sending chip, Fig. 9 The blue light signal in the chip sends the input pins on the left side of the chip. The connection relationship can be determined by the signal identification in the figure. For example, Fig.10 LEDR1 connection in Figure 7 LEDR1 (SDI pin) of UR1, Fig.10 LEDG1 connection in Figure 8 LEDG1 (SDI pin) of UG1, Fig.10 LEDB1 connection in Fig. 9 LEDB1 (SDI pin) of UB1 in the same way as other pins and transmission signals. Figure 7 , Figure 8 , Fig. 9 , Fig.10 .

[0179] In this embodiment, through the above structure, the RC low-pass filter circuit of the second filter module 70 can be used to filter the LED drive signal output by the drive signal receiving unit 401, thereby improving the quality of the LED drive signal.

[0180] It should be noted that Fig.10 FIG. 4 shows a partial connection relationship between the units of the second filtering module 70, but in actual application, other connection relationships of the driving signal receiving unit 401 can be set according to actual needs, and Fig.10 FIG. 7 shows the pins of the second filter module 70 that are related to the other unit module connection structures provided in the embodiment of the present application. Other pins that are not shown can be set according to actual conditions. Fig.10 The example shown is not intended to limit the second filtering module 70 of the present application.

[0181] In an exemplary embodiment, the LED dot matrix display module includes a plurality of dot matrix display units arranged in rows, the dot matrix display units include dot matrix display sub-units arranged in columns, and the dot matrix display sub-units include a plurality of LED units.

[0182] Exemplarily, the LED dot matrix display module can be divided into a plurality of dot matrix display units according to the row arrangement, and can be divided into a plurality of dot matrix display sub-units according to the column order arrangement, for example, each row of the dot matrix display unit can be divided into two dot matrix display sub-units. The dot matrix display sub-unit can include a plurality of LED units, and the LED unit can include at least one each of a red light LED, a green light LED, and a blue light LED.

[0183] For example, Fig.11 A schematic diagram of the LED layout provided in the embodiment of the present application Figure 1, Fig.12 A schematic diagram of the LED layout provided in the embodiment of the present application Figure 2 ;like Fig.11 As shown, the LED dot matrix display module includes LED1~LED11520, each row of LED layout can be used as a dot matrix display unit, and can be divided into dot matrix display sub-units according to the column arrangement. For example, each row of LED layout can be divided into two dot matrix display sub-units, then one dot matrix display sub-unit can include LED1~LED120, and the other dot matrix display sub-unit can include LED121~LED240.

[0184] See also Fig.12 , the LED dot matrix display module 50 includes 48 rows of dot matrix display units, wherein each row of dot matrix display units includes two columns of dot matrix display sub-units, and each column of LED units includes one red light LED, one green light LED, and one blue light LED. With such a structure, the resolution of the electronic display device is 48×120, that is, 120 omnidirectional LED lamp beads in the horizontal direction and 48 rows in the vertical direction. In this way, the circuit design adopts a horizontal and vertical layout design. If a 48×240 resolution light board is designed, and 240 LED lamp beads are arranged in the horizontal direction, then one group of dot matrix display sub-units can be split into the left and right groups, thereby improving the current driving capability of the chip in the LED signal sending unit.

[0185] like Fig.12 As shown, Fig.12 The middle and lower input pins are connected Figure 7 , Figure 8 , Fig. 9 The middle right output pin, for example, 1R1 in LED1 is connected Figure 7 The 1R1 interface of UR1 (OUT0 pin of UR1) realizes the red light lighting control of LED1, 1G1 connection Figure 8 The 1G1 interface of UG1 (OUT0 pin of UG1) in the control circuit realizes the green light lighting control of LED1, and the 1B1 connection Fig. 9 The 1B1 interface of UB1 (OUT0 pin of UB1) is used to control the blue light of LED1. Fig.12 The same applies to other pins (ports) and transmission signals. For details, please refer to Figures 7 to 9 , Fig.12 .

[0186] It should be noted that Fig.11 , Fig.12 The layout structure of the LED dot matrix display module and the partial connection relationship of each unit of the LED dot matrix display module are shown in FIG. 1 . However, in actual application, other connection relationships and other layout structures of the LED dot matrix display module can be set according to actual needs, and Fig.12The LED dot matrix display module part and the pins related to the other unit module connection structure provided in the embodiment of the present application are shown in the figure. Other pins not shown can be set according to actual conditions. Fig.11 , Fig.12 The example shown is not intended to limit the second filtering module of the present application.

[0187] In this embodiment, through the structural layout of the LED dot matrix display module, LEDs can be effectively used to realize graphic display of the electronic display device, thereby significantly improving the brightness of the screen and increasing the viewing angle of the electronic display device.

[0188] In an exemplary embodiment, the LED dot matrix driving module includes an LED power driving unit; the LED dot matrix display module includes a plurality of dot matrix display units;

[0189] The input end of the LED power drive unit is connected to the drive signal amplification module, and the LED power drive unit is used to receive the LED power control signal output by the drive signal amplification module and output the LED power drive signal;

[0190] The output ends of the LED power drive unit are respectively connected to a plurality of dot matrix display sub-units, so that the voltage inputs of the plurality of dot matrix display sub-units are controlled by the LED power drive signal.

[0191] The LED power driving unit may refer to a unit for driving an LED power supply.

[0192] Exemplarily, the input end of the LED power drive unit is connected to the output end of the drive signal amplification module, and is used to receive the amplified LED power control signal output by the drive signal amplification module. The output end of the LED power drive unit is respectively connected to a plurality of dot matrix display sub-units, and is used to output LED power drive signals to control the voltage input of the plurality of dot matrix display sub-units, so as to control the lighting of the LEDs contained in the dot matrix display sub-units.

[0193] Optionally, Fig.13 A schematic diagram of the structure of the LED power drive unit provided in the embodiment of the present application; Fig.13 As shown, the LED power drive unit 405 may include LED power drive chips UH1~UH6, etc. Among them, the left end of the LED power drive chip is an input pin, and the right end is an output pin. The left end input pin of the LED power drive chip can be connected Fig.10 The right end output pin of the second filter module 70 in the LED power driver chip can be connected to Fig.12 The upper end input of the LED dot matrix display module 50 in the figure, the above connection relationship can be determined by the signal identification in the figure.

[0194] As an example, the LED power control signal may be Figure 3 The driving signal generating chip 201 generates an output to Figure 4 The signal amplification chips U1 and U13 in the circuit obtain the amplified LED power control signal. Figure 5 The first filtering module 60 in the filter is filtered and input to Figure 6 The driving signal in the receiving chip and again through Fig.10 After being filtered by the second filter module 70, the signal is input to the LED power drive unit 405.

[0195] like, Figure 3 The drive signal generating chip 201 in the embodiment outputs signals CPU_A, CPU_B, and CPU_C. Figure 4 The signal amplifier chip in the output amplified signals JA, JB, JC are Figure 5 The first filter module 60 outputs signals A, B, and C. Figure 6 The drive signal in the receiving chip outputs H_A1, H_B1, H_C1, through Fig.10 After the second filter module 70 in the circuit, the output signals H_AIN1, H_BIN1, and H_CIN1 are Fig.13 The LED power driver chip in the LED power driver chip outputs 1H1, 1H2, 1H3, ..., 1H48 and other LED power drive signals, so that it can control Fig.12 The upper voltage input of the LED dot matrix display module 50 is shown.

[0196] In practical applications, such as Figure 5 The A, B, and C signals are the row control signals of the LED matrix, which are mainly used to control the power input of the LED lights in the row. Figure 3 The R1, G1, B1 and other signals in the LED matrix are controlled to light up the corresponding LED lights. Figure 3 The A, B, and C signals in the circuit eventually flow to the bottom H_AIN1, H_BIN1, and HCIN1 to control Fig.12 The positive terminal of the power supply for each row of lights.

[0197] See also Fig.13 , C102, C103, C104, C105, C106, C107, C108, C109, C110 are used for charge storage and filtering. The H_AIN1, H_BIN1, B_CIN 1 signals are output to the LED power driver chips UH1~UH6 after passing through them. Fig.12 The row control in the middle drives the LED dot matrix display module 50, and then controls the power drive control of the rows of the LED dot matrix above, that is, mainly controls the input of the common anode power supply in the LED dot matrix.

[0198] In this embodiment, through the structure of the above-mentioned LED power drive unit 405, the power input of the LED dot matrix display module 50 can be effectively controlled, and the LED drive signal can be used to drive the LED lamp beads to light up, which can be beneficial to realize the electronic display device circuit through LED, and realize the graphic display of the electronic display device through the electronic display device circuit, thereby significantly improving the brightness of the screen and improving the viewing angle of the electronic display device.

[0199] In an exemplary embodiment, the driving signal amplifying module includes a plurality of driving signal amplifying units; the circuit further includes:

[0200] A drive selection module, the input end of which is connected to the drive signal generation module, and the output end of which is respectively connected to a plurality of drive signal amplification units;

[0201] The driving selection module is used to control the plurality of driving signal amplifying units to receive driving signals.

[0202] The drive selection module may refer to a module for selecting a module to which a signal needs to be output.

[0203] Exemplarily, the input end of the drive selection module is connected to the output end of the drive signal generation module, for receiving instructions from the drive signal generation module; the output end of the drive selection module is respectively connected to multiple drive signal amplifying units, for controlling the drive signal amplifying units to receive LED drive signals, so that the corresponding drive signal amplifying units can amplify the LED drive signals output by the drive signal generation module, thereby helping to improve the viewing angle of the electronic display device.

[0204] In practical applications, SPI communication involves the master control module writing parameters to multiple slave devices separately. Due to the limited GPIO, it can be switched through an analog switch, that is, the drive signal amplification unit to which data needs to be written can be selected through the drive selection module.

[0205] Optionally, Fig.14 A schematic diagram of the structure of the drive selection module provided in the embodiment of the present application is shown in FIG. Fig.14 As shown, the drive selection module 80 may include drive selection module chips U11, U12, as well as capacitors and resistors. Among them, capacitors C69 and C70 are mainly used for chip filtering, and resistors R13 and R44 are pull-down resistors, so that the chip enters the working mode by default when powered on. Resistors R45, R8, R9, R10, R11, and R12 are matching resistors. Fig.14 The pins in (a) and (b) can be connected to the Figure 4 Signal amplification chip and Figure 3 The driving signal generating chip 201 can be found in Figure 3 , Figure 4 , Fig.16 The signal identifiers in determine the connection relationship, for example, Fig.14 The S1 pin (HUB_CODE0) of the U11 chip in (a) can be connected Figure 3 The GPIO pin (HUB_CODE0) of the driving signal generating chip 201 is connected to the U11 chip so that the driving signal generating chip 201 transmits the HUB_CODE0 signal to the U11 chip, indicating the selection of the signal amplifying chip. For another example, Fig.14 (a) SPI_CS1 (Y0 pin) can be connected Figure 4 In (b), the SPI_CS1 (AO pin) can be driven by the SPI_CS1 signal. Figure 4 In (b), U13 writes data. It can be understood that Fig.14 The SPI_CS2, SPI_CS3 and other pins can be connected Figure 4 The SPI_CS2, SPI_CS3 and other pins of other signal amplifying chips not shown in the figure are used to enable other signal amplifying chips to write data.

[0206] Fig.14 The other pins and transmission signals are implemented in the same way as above. It should be noted that: Fig.14 FIG. 8 shows a partial connection relationship between the various units of the drive selection module 80, but in actual applications, other connection relationships of the drive selection module 80 can be set according to actual needs, and Fig.14 The pins of the drive selection module 80 and other unit module connection structures provided in the embodiment of the present application are shown in the figure. Other pins not shown can be set according to actual conditions. Figure 6 The example shown is not intended to limit the drive selection module 80 of the present application.

[0207] In this embodiment, through the structure of the drive selection module 80, it is possible for the master control to write parameters to multiple slave devices separately, and use analog switches to switch slave devices (chips), which is beneficial to saving the cost of component settings.

[0208] In an exemplary embodiment, the circuit further comprises:

[0209] The parameter storage module is connected to the driving signal generating module and is used to store the selection parameters of the driving selection module.

[0210] Among them, the parameter storage module can be a unit for storing lamp bead parameters, and can be used to store lamp bead correction parameters.

[0211] Exemplarily, the parameter storage module can communicate with the driving signal generating module and receive data sent by the driving signal generating module through SPI communication. Meanwhile, the parameter storage module can also transmit the stored data to the driving signal generating module through SPI communication.

[0212] Optionally, Fig.15 A schematic diagram of the structure of the parameter storage module provided in the embodiment of the present application is shown in FIG. Fig.15 As shown, the parameter storage module 90 may include a parameter storage chip U4 and a capacitor C76, wherein the pins of U4 may be connected to Figure 3 For details, please refer to the pins of the driving signal generating chip 201. Fig.15 , Figure 3 The signal identification in determines the connection relationship. Capacitor C76 can be used to filter the chip U4.

[0213] In this embodiment, the selected parameters (correction parameters of LED lamp beads) can be stored through the structure of the parameter storage module 90. By setting the parameter storage module 90, parameter correction can be performed to ensure the consistency of the product, thereby improving the accuracy of the electronic display device.

[0214] In an exemplary embodiment, the circuit further comprises:

[0215] The test module is connected to the drive signal generation module and is used to drive the drive signal generation module to generate a test signal to light up the test LED dot matrix display module.

[0216] The test module may refer to a module used to test whether the display function of the circuit of the electronic display device is normal.

[0217] Exemplarily, the output end of the test module can be connected to the input end of the drive signal generation module to send a test signal to the drive signal generation module so that the drive signal generation module generates an LED drive signal for testing to perform a lighting test of the LED matrix.

[0218] Optionally, Fig.16 A schematic diagram of the structure of the test module provided in the embodiment of the present application, such as Fig.16 As shown, the test module 91 can be connected via the TEST_KEY_HUB_CODE2 port Figure 3 The driving signal generates the TEST_KEY_HUB_CODE2 port (BLANK pin) of chip 201.

[0219] In actual application, during the quality inspection of production, the control test can be carried out through the button K2, where R43 is a pull-up resistor. Figure 3The driving signal generating chip 201 performs function judgment by judging the voltage on the right side of R43 when the key K2 is pressed. The capacitor C68 is relatively small and mainly plays a filtering role when the key K2 is pressed. When the key K2 is pressed, the power supply voltage here is 0V, and the driving signal generating chip 201 judges that the key is pressed, so as to play the test picture to verify whether the display LED is complete.

[0220] In this embodiment, the structure of the test module 91 can effectively test the circuit of the electronic display device, thereby ensuring the functional integrity of the circuit of the electronic display device.

[0221] In one exemplary embodiment, the circuit includes:

[0222] A power supply module, connected to the main control module and the drive signal generation module respectively, and also used to connect an external power supply;

[0223] The power supply module converts the voltage of the external power supply and outputs the converted voltage to power the main control module and the drive signal generation module.

[0224] The power supply module may be a module for supplying power to various modules of the electronic display device circuit. For example, the power supply module may convert the voltage of an external power source and then supply power to various modules.

[0225] Exemplarily, the input end of the power supply module is used to connect to an external power supply and access an external voltage. The output end of the power supply module is respectively connected to the main control module and the drive signal generation module, and is used to convert the external voltage of the external power supply to provide working voltage for the main control module and the drive signal generation module.

[0226] In practical applications, Fig.17 This is a schematic diagram of the structure of the power supply module provided in the embodiment of the present application. Fig.17 As shown, the power supply module 92 may include a power supply chip U9, multiple resistors, multiple capacitors, and inductors.

[0227] The electronic display device circuit can use 5V to power the LED lamp, and at the same time, it can power the main control module and the drive signal generation module through 5V to 3.3V voltage conversion. Figure 7As shown, the main function of the magnetic bead FB4 is power filtering, the capacitor C63 and the capacitor C64 provide energy storage and filtering for the power supply required by the circuit, the resistor R39 provides a pull-up power supply for U9 to ensure that U9 can work normally, the inductor L3 provides a stable power output for the back-end load, the resistor R40, the resistor R41, the resistor R42, and the capacitor C65 are circuit matching resistors and capacitors to achieve the matching circuit of the target power supply, and the capacitors C66 and C67 store charge and filter for the back-end 3.3V power supply. The resistor R38 is a reserved resistor that plays a key role in the later debugging and testing current.

[0228] In this embodiment, through the structure of the above-mentioned power supply module, the converted voltage can be effectively provided to the main control module and the drive signal generating module for power supply, so that the power supply of the main control module and the drive signal generating module can be in a normal working state. At the same time, the power supply module can also supply power to other modules, thereby ensuring that the functions of the electronic device circuit designed by LED are normally realized, and then the screen brightness of the electronic display device can be significantly improved, solving the problem of not being able to see the screen clearly and the display being unclear when the ambient light is relatively bright. At the same time, the viewing angle of the electronic display device can be improved, solving the problem of small viewing angle of the electronic display device.

[0229] It can be understood that the information related to 3.3V, 5V, etc. shown in the above figures is the supply voltage. Specifically, 3.3V and 5V represent corresponding voltage values, and the operating voltages between different modules can be set according to actual conditions.

[0230] In an exemplary embodiment, the present application provides an electronic display device, the device comprising:

[0231] case;

[0232] As for the electronic display device circuit mentioned above, the electronic display device circuit is arranged in the housing.

[0233] Exemplarily, the electronic display device may include a shell and the electronic display device circuit of each of the above-mentioned embodiments. The electronic display device circuit may be arranged in the shell. The shell is used to protect the electronic display device circuit so that the electronic display device circuit can realize the function of graphic display through LED and ensure the life of the electronic display device, thereby completing the graphic display function through LED, significantly improving the screen brightness of the electronic display device, and solving the problem of not being able to see the screen clearly and unclear display when the ambient light is relatively bright. At the same time, it can improve the viewing angle of the electronic display device and solve the problem of small viewing angle of the electronic display device.

[0234] In an exemplary embodiment, the present application provides an electronic price tag system, the system comprising:

[0235] The electronic display device as described above;

[0236] A controller is communicatively connected to the electronic display device.

[0237] The controller may be a remote control device for controlling the electronic display device.

[0238] Exemplarily, the electronic display device may have a Bluetooth function, that is, the main control module of the electronic display device circuit has a Bluetooth function, and the controller may establish a Bluetooth communication connection with the main control module. Through the Bluetooth communication connection, the controller may send the communication data that requires graphic display to the main control module, and further, through the various embodiments of the above-mentioned electronic display device circuit, graphic display may be realized, thereby facilitating improving the brightness of the screen of the electronic display device in the electronic price tag system, solving the problem of not being able to see the screen clearly or the display being unclear when the ambient light is relatively bright, and being able to improve the viewing angle of the electronic display device, solving the problem of small viewing angle of the electronic display device in the related art. In this way, the electronic price tag system can be applied to scenes with higher brightness such as outdoor or semi-outdoor environments.

[0239] Optionally, the controller may also be connected to the electronic display device through other wireless communication methods. Specifically, wireless remote control or data transmission may be achieved by setting the wireless communication of the controller and the wireless communication of the main control module to correspond.

[0240] Finally, 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0241] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can refer to each other.

[0242] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electronic display device circuit, characterized in that: The circuit comprises: A main control module, used for receiving electronic signals corresponding to graphic information; A driving signal generating module, connected to the main control module, configured to receive the electronic signal and output an LED driving signal; A driving signal amplifying module, connected to the driving signal generating module, and used to amplify the LED driving signal; An LED dot matrix driving module, connected to the driving signal amplifying module, configured to receive the amplified LED driving signal and output the LED dot matrix driving signal; The LED dot matrix display module is connected to the LED dot matrix driving module to drive the LED dot matrix display module to light up through the LED dot matrix signal, so that the LED dot matrix display module displays the graphic information.

2. The circuit according to claim 1, characterized in that The driving signal amplifying module comprises: A signal amplifying unit, the input end of which is connected to the driving signal generating module, and the output end of which is connected to the LED dot matrix driving module; The energy storage and filtering unit is connected to the signal amplifying unit and performs energy storage and filtering for the signal amplifying unit.

3. The circuit according to claim 2, characterized in that The circuit further comprises: A first filtering module, whose input end is connected to the output end of the signal amplifying unit, and whose output end is connected to the LED dot matrix driving module; The first filtering module is used to filter the amplified LED driving signal output by the signal amplifying unit.

4. The circuit according to claim 1, characterized in that The LED dot matrix display module includes a plurality of LED units; The LED dot matrix driving module comprises: A driving signal receiving unit, the input end of which is connected to the driving signal amplifying module, and is used to stabilize the amplified LED driving signal; The LED signal sending unit has an input end connected to the output end of the driving signal receiving unit and an output end connected to the plurality of LED units. The LED signal sending unit is used to drive the plurality of LED units to light up.

5. The circuit according to claim 4, characterized in that The LED unit includes a red light unit, a green light unit and a blue light unit; the LED signal sending unit includes: A red light signal sending unit, the input end of which is connected to the output end of the driving signal receiving unit, and the output end of which is connected to the red light unit; A green light signal sending unit, whose input end is connected to the output end of the driving signal receiving unit, and whose output end is connected to the green light unit; A blue light signal sending unit has an input end connected to the output end of the driving signal receiving unit and an output end connected to the blue light unit.

6. The circuit according to claim 4, characterized in that The circuit further comprises: A second filtering module, an input end of which is connected to the output end of the driving signal receiving unit, and an output end of which is connected to the input end of the LED signal sending unit; The second filtering module is used to filter the stable LED driving signal output by the driving signal receiving unit.

7. The circuit according to claim 1, characterized in that The LED dot matrix display module includes a plurality of dot matrix display units arranged in rows, the dot matrix display units include dot matrix display sub-units arranged in columns, and the dot matrix display sub-units include a plurality of LED units.

8. The circuit according to claim 1, characterized in that The LED dot matrix driving module includes an LED power driving unit; the LED dot matrix display module includes a plurality of dot matrix display units; The input end of the LED power driving unit is connected to the driving signal amplifying module, and the LED power driving unit is used to receive the LED power control signal output by the driving signal amplifying module and output the LED power driving signal; The output ends of the LED power driving unit are respectively connected to a plurality of the dot matrix display sub-units, so that the voltage inputs of the plurality of the dot matrix display sub-units are controlled by the LED power driving signal.

9. The circuit according to claim 1, characterized in that The driving signal amplifying module includes a plurality of driving signal amplifying units; the circuit also includes: A drive selection module, the input end of which is connected to the drive signal generation module, and the output end of which is respectively connected to the plurality of drive signal amplification units; The driving selection module is used to control the plurality of driving signal amplifying units to receive driving signals.

10. The circuit according to claim 9, characterized in that The circuit further comprises: A parameter storage module is connected to the driving signal generating module and is used to store the selection parameters of the driving selection module.

11. The circuit according to claim 1, characterized in that The circuit further comprises: The test module is connected to the drive signal generation module and is used to drive the drive signal generation module to generate a test signal so as to test that the LED dot matrix display module is lit.

12. The circuit according to claim 1, characterized in that The circuit comprises: A power supply module, connected to the main control module and the drive signal generating module respectively, and also used to connect to an external power supply; The power supply module converts the voltage of the external power supply and outputs the converted voltage to power the main control module and the drive signal generating module.

13. An electronic display device, characterized in that: The device comprises: case; The electronic display device circuit according to any one of claims 1 to 12, wherein the electronic display device circuit is arranged in the housing.

14. An electronic price label system, characterized in that: The system comprises: The electronic display device as claimed in claim 13; A controller is communicatively connected to the electronic display device.

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