LED module with sunken receiving system

Abstract

The invention discloses an LED module with a sunken receiving system, which comprises an LED receiving card, and is characterized in that the LED receiving card is used for receiving the sending content of an LED sending card, converting an internet access signal of the LED sending card into an RGB signal, and communicating with the LED module; the LED module part is used for displaying video content; the LED module is characterized in that the LED module is one of LED products, is formed by regularly arranging and packaging a certain number of light-emitting diodes, and comprises LED lamp beads, a PCB (Printed Circuit Board), a driver and a protection device to form an integral module; the system has the beneficial effects that the system changes the expansion mode of the LED module, changes the mode that a product needs the connection of a receiving card core board and a HUB board as a receiving system, and is more beneficial to equipment assembly and cost control.

Description

Technical Field

[0001] The invention relates to the technical field of LED display, and in particular to an LED module with a sinking receiving system. Background Art

[0002] The LED display is divided into three parts: LED sending card, LED receiving card, and LED module. Among them, the connection methods between the LED receiving card 102 and the LED module 103 are even more diverse. The current method of connecting the LED receiving card 102 and the LED module 103 with multiple flat cables on the market will increase the thickness of the LED box, making it bulky as a whole, and the wiring method is not conducive to the post-maintenance of the LED box. Therefore, the current market needs a new connection method to make LED products more suitable for a variety of application scenarios and greatly reduce the difficulty and cost of installation. Summary of the invention

[0003] In view of the defects in the prior art, the present invention provides an LED module with a sinking receiving system to solve the existing problems.

[0004] The present invention is achieved through the following technical solutions: An LED module with a sunken receiving system comprises: an LED receiving card, characterized in that: the LED receiving card is used to receive the content sent by an LED sending card, and convert the network port signal of the LED sending card into an RGB signal, and communicate with the LED module; an LED module part, used to display video content; characterized in that: the LED module is one of the LED products, which is formed by arranging and packaging a certain number of light-emitting diodes according to a rule, and comprises LED lamp beads, PCB boards, drivers and protection devices to form an integral module.

[0005] Preferably, the LED receiving card receives image data from the sending card, and the image data is processed and encoded by the sending card; the received data is converted according to a specific protocol and format into signals that can be recognized by the LED screen, and these signals contain all the information required to control the lighting and color change of the LED display screen; the converted signal sends a pulse signal through the control unit (MCU chip) on the receiving card, and the pulse signal drives the LED module to display, and each LED lamp bead lights up or changes color according to the received signal, presenting a complete image or video content on the LED display screen.

[0006] Preferably, the LED module uses semiconductor materials to emit light.

[0007] Preferably, the communication protocol of the LED receiving card includes general protocols such as RS-232C, RS-485, Ethernet, and special communication protocols.

[0008] The beneficial effects of the present invention are reflected in: the system changes the expansion mode of the LED module, changes the mode in which the product needs to connect the receiving card core board and the HUB board as a receiving system, and is more conducive to equipment assembly and cost control. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0010] Figure 1 This is a principle block diagram of the LED receiving card 102-LED module 103 of the present invention; Figure 2 The circuit schematic diagram of the IC part in the connection method of the LED receiving card 102 and the LED module 103 of the present invention; Figure 3 This is a circuit schematic diagram of the signal connection mode of the connection mode between the LED receiving card 102 and the LED module 103 of the present invention; Figure 4 It is a circuit schematic diagram of the connector part in the connection method between the LED receiving card 102 and the LED module 103 of the present invention. DETAILED DESCRIPTION

[0011] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0012] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0013] For ease of description, spatial relative terms such as "upper," "lower," "left," and "right" may be used herein to describe the relationship of one element or feature shown in a figure relative to another element or feature. It should be understood that the spatial terms are intended to include different orientations of the device in use or operation in addition to the orientation shown in the figures. For example, if the device in the figure is inverted, elements described as being "below" other elements or features will be positioned "above" the other elements or features. Thus, the exemplary term "below" may include both upper and lower orientations.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation of the present invention is described in detail below in conjunction with specific embodiments: Figure 1-Figure 4 The present invention is achieved by the following technical solutions: Figure 1 FIG. 1 shows a principle block diagram of an LED receiving card 102-LED module 103 according to an example of the present invention. Figure 1 As shown, the system is composed of an LED receiving card 102 and a plurality of LED modules 103 .

[0016] The LED receiving card 102 is an electronic device used to receive external signals (usually from a sending card or a computer), decode and process them, and finally convert them into a signal format that can be recognized and displayed by the LED display.

[0017] The working principle of LED receiving card 102 can be summarized as the following steps: Receiving signal: The receiving card first receives the serial data or parallel data signal from the sending card or computer.

[0018] Decoding: The received signal is decoded and converted into a format that can be recognized by the computer. During this process, the receiving card will adjust the contrast, brightness, color, etc. of the signal to ensure image quality.

[0019] Drive display: The decoded signal is further processed to meet the display requirements of the LED display. The receiving card converts the processed signal into an analog signal or digital signal that matches the display, thereby driving the LED display to work normally.

[0020] Functions and features include: Signal conversion: LED receiving card 102 can convert the signal output by the computer into a signal format that can be recognized by the LED display screen to ensure the normal display of images and information.

[0021] Data processing: The receiving card has strong data processing capabilities and can perform various processing and conversions on the received signals to meet different display requirements.

[0022] Multiple interfaces: In order to facilitate the connection of different types of signal sources, the LED receiving card 102 usually provides multiple input interfaces, such as DVI, HDMI, VGA, etc.

[0023] High stability and reliability: The receiving card adopts advanced chip technology and stable circuit design to ensure that there will be no failure or data loss in the case of long-term continuous operation.

[0024] Remote control and monitoring: Some LED receiving cards 102 also provide remote control and monitoring functions. Users can configure and control the receiving card through a computer or other device to achieve remote management of the display screen.

[0025] The LED receiving card 102 is widely used in various LED display screen occasions, such as outdoor billboards, indoor conference display screens, stadium display screens, etc. In these scenarios, the receiving card is responsible for receiving and processing signals from the sending card or computer to ensure that the LED display screen can display images and information normally.

[0026] LED receiving card 102 is one of the indispensable key devices in LED display technology. It converts the signal output by the computer into a signal format that can be recognized and displayed by the LED display screen through the steps of receiving, decoding, processing and outputting signals. Its powerful data processing capabilities, multiple interfaces, high stability and reliability make the LED receiving card 102 play an important role in various application scenarios.

[0027] In the present invention, the LED receiving card 102 is implemented by sinking the receiving card IC. Different from the hard connection between the receiving card core board and the receiving card HUB board in the current market, the present invention integrates the core board and the HUB board, which can reduce the difficulty of assembly and cost control. The specific implementation method will be described in Figure 2-Figure 4 Give a detailed description in.

[0028] LED module 103 is a product that assembles multiple LED lamp beads in a certain arrangement and connection method and performs packaging processing. It combines LED lamp beads, PCB boards (circuit boards), drivers (if necessary) and protective devices to form an integral module. The basic structure includes LED lamp beads, PCB boards, drivers (if any) and protective devices. LED lamp beads are the core part of light emission. The PCB board is responsible for connecting each LED lamp bead and providing power and signal transmission. The driver is used to adjust the current of the LED lamp bead to achieve different brightness and colors, and the protective device is used to prevent adverse effects such as overvoltage and overcurrent.

[0029] LED module 103 has the following features and advantages: High brightness: The LED module 103 can achieve high brightness output through the combination of multiple LED lamp beads to meet various lighting and display needs.

[0030] Low power consumption: LED, as a cold light source, has lower power consumption and can significantly save energy compared to traditional light sources.

[0031] Good heat dissipation: The complex LED module 103 will add heat dissipation treatment to improve the life and luminous intensity of the LED.

[0032] Strong adaptability: Through waterproof treatment and other special designs, the LED module 103 can adapt to the use requirements of various environments, including harsh outdoor environments.

[0033] The LED module of the example of the present invention mainly uses a COB module. Specifically, this technology integrates multiple LED chips directly onto a common substrate (such as a metal or ceramic substrate), rather than packaging them first and then mounting them. During the COB packaging process, the LED chip is directly fixed to the substrate through conductive glue or welding, and then electrical connections and optical packaging are performed through precision equipment to form a complete module.

[0034] Figure 2 The receiving card IC part in the circuit schematic diagram of the LED receiving card 102 and the LED module 103 provided in the example of the present invention is shown. In order to realize this part of the principle, the receiving card chip adopts the ICND6603 solution, which is simple and easy to use and can flexibly cope with various usage scenarios.

[0035] The power supply part of the LED receiving card 102 of the example of the present invention adopts a 4.2V voltage level to supply power, mainly considering the module compatibility of this voltage level and the applicability of the lower-level DCDC circuit, as follows: ① Since the LED module 103 of the example of the present invention mainly adopts a COB module, and the power supply voltage of the COB module ranges from 3.8V to 4.5V, this voltage range is used as the basis for the selection of the voltage level; ② Since the subsequent receiving card IC adopts a 3.3V voltage to supply power, it is necessary to adopt a DCDCbuck chip to power the IC. Limited by the minimum voltage difference of the DCDC buck chip and the easy design of the switching power supply, a 4.2V voltage level is finally adopted for power supply.

[0036] ICND6603 is a control chip specially designed for LED display driver. It can directly input video through HDMI / DVI, directly drive LED display module or cabinet after processing, and can be multi-level cascaded through network cable. Support input and output interchange and parameter readback. Support 40 sets of RGB data output. The design of the receiving card IC part is divided into power supply part and signal part. Among them, the design of the power supply part adopts DCDC to convert the 4.2V power supply voltage of the whole board into 3.3V to power the IC. The power consumption requirements of ICND6603 are additionally considered in the selection of DCDC chip, so a DCDC chip with a power supply current of 2A is adopted. The signal part is divided into input signal and output signal, among which the input signal is the HDMI input interface signal. In the example of the present invention, this interface is designed to be transmitted through the network port for the following reasons: ① The transmission rate of the network port is higher; ② The transmission distance of the network port is farther. In summary, the input interface signal of ICND6603 is extended through the PCB to transmit data in the form of a network port. The output signal is divided into a data signal and a control signal, wherein the data signal is the 40 sets of RGB data that can be output by ICND6603. In the example of the present invention, this data signal is directly connected to the connector part via the driver chip 74HC245 to provide the output data signal for the LED module 103. The control signal is the LED control signal DCLK, GCLK, LE output by ICND6603, the line scanning control signal LINE_A, LINE_B, and other host computer control signals I2C, SPI, etc. Such control signals perform scanning control, clock control, etc. on the above data signals, and are directly connected to the connector part via the driver chip 74HC245 to provide the output control signal for the LED module 103.

[0037] Figure 3 The signal connection mode part of the circuit principle diagram of connecting the LED receiving card 102 and the LED module 103 provided by the example of the present invention is shown. In order to realize this part of the principle, the connection part chip adopts the 74HC245 solution.

[0038] 74HC245 is an 8-way bus transceiver. These 8-way bus transceivers are designed for asynchronous bidirectional communication between data buses. The control function can minimize external timing requirements. Depending on the logic level on the direction control (DIR) input, this type of device sends data from the A bus to the B bus, or sends data from the B bus to the A bus. The output enable (OE) input can be used to disable the device, which can effectively isolate the bus. Using this bus transceiver solution can greatly improve the system load capacity and improve the signal attenuation problem caused by the long routing distance. All data signals and control signals extended from ICND6603 involved in the examples of the present invention need to be connected to the connector through 74HC245.

[0039] In particular, since the control signal has only one set of extensions from ICND6603, and a single receiving card board needs to drive multiple LED modules 103, the control signal needs to be implemented by dividing one signal into multiple signals through 74HC245, so that the multi-load operation of the LED receiving card 102 can be better realized.

[0040] Figure 4 The connector part of the circuit schematic diagram of the LED receiving card 102 and the LED module 103 provided by the example of the present invention is shown. This connector adopts a floating connector, which is easier to use and more reliable, suitable for a variety of installation scenarios, greatly reduces the difficulty of product installation, and increases the service life.

[0041] The connector part is divided into a power supply part and a signal part. Among them, the implementation scheme of the power supply part is to directly use the 4.2V power supply voltage of the whole board to power the LED module 103, which greatly improves the compatibility of the power supply voltage. Because the single power of the LED module 103 is relatively high, the current design of this power supply voltage has a large current design requirement. The current can be increased by increasing the width of the copper foil and providing a double layer of power copper foil to reduce the impedance of the transmission path. The signal part is divided into data signals and control signals. Among them, the control signal can be directly connected as a single group of signals, and the data signal as a multi-group signal needs to first confirm how many groups of data signals are used by the LED module 103, and then the connector part circuit will make a unified distribution.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. An LED module with a sinking receiving system, comprising: The LED receiving card is characterized in that: the LED receiving card is used to receive the content sent by the LED sending card, and convert the network port signal of the LED sending card into an RGB signal to communicate with the LED module; the LED module part is used to display the video content; the LED module is one of the LED products, which is formed by arranging and packaging a certain number of light-emitting diodes according to a rule, including LED lamp beads, PCB boards, drivers and protection devices to form an integral module.

2. The LED module with a sinking receiving system according to claim 1, characterized in that: The LED receiving card receives the image data from the sending card, which is processed and encoded by the sending card; the received data is converted according to a specific protocol and format into signals that can be recognized by the LED screen, and these signals contain all the information required to control the lighting and color change of the LED display screen; the converted signal sends a pulse signal through the control unit (MCU chip) on the receiving card, and the pulse signal drives the LED module to display, and each LED lamp bead lights up or changes color according to the received signal, presenting a complete image or video content on the LED display screen.

3. The LED module with a sinking receiving system according to claim 1, characterized in that: The LED module uses semiconductor materials to emit light.

4. The LED module with a sinking receiving system according to claim 1, characterized in that: The communication protocols of the LED receiving card include RS-232C, RS-485, Ethernet general protocol and special communication protocol.

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