LED display screen

Abstract

The utility model provides an LED display screen which comprises a display module, a signal processing chip and a control unit, the signal processing chip can receive and process communication signals to generate control signals and transmit the control signals to the control unit, and the control unit regulates and controls LED lamp beads according to the control signals. Precise control over parameters such as brightness, color and flicker of the LED lamp beads is achieved. According to the scheme, the arrangement of an adapter plate and a receiving card in a traditional LED display screen is omitted, the overall structure of the LED display screen is simplified, the procedures of assembling, testing and the like of the adapter plate and the receiving card in the production process are reduced, and the production cost can be greatly reduced. Besides, the display module can integrate the lamp panel, the LED lamp beads, the signal processing chip and the control unit together to form a highly integrated module, so that the overall structure of the LED display screen is more compact, connecting lines and external equipment between all the components are reduced, the overall complexity of the structure is reduced, and the cost is reduced. And the installation speed and the production efficiency are improved.

Description

LED display screen Technical Field

[0001] This utility model relates to the field of display device technology, and in particular to an LED display screen. Background Technology

[0002] LED displays are widely used in advertising media, command and control, stage displays, and other scenarios due to their advantages such as high brightness, long lifespan, and splicing capability. A typical LED display system consists of a sending card, a receiving card, an adapter board, and a light board, achieving pixel lighting control through multi-level signal transmission. Among these, the light board, as the display unit, directly determines the display effect and reliability of the screen due to the stability and accuracy of its signal control.

[0003] Currently, the light board signal control is implemented through a three-level architecture of "receiver card → adapter board → light board". The specific process is as follows: the receiver card sends out control signals, then the adapter board adjusts and sorts the signals, and then transmits them to each light board through the interface, thereby controlling the light board to display the image.

[0004] This means that conventional LED displays require components such as adapter boards and receiver cards for controlling the light panel signals. Furthermore, there are many models of adapter boards and a complicated production process. The signal pin design of the receiver card is complex and the structure is redundant, resulting in a complex overall structure and high production costs for the LED display. Summary of the Invention

[0005] The purpose of this utility model is to solve the technical problems in the prior art, where LED displays require components such as adapter boards and receiver cards for lamp board signal control. The adapter boards have many models and the production process is cumbersome. The signal pin design of the receiver cards is complex and the structure is redundant, resulting in a complex overall structure and high production cost for the LED display.

[0006] To solve the above-mentioned technical problems, this utility model provides an LED display screen, which includes:

[0007] The display module includes a light board and LED beads disposed on the light board. The light board is provided with a signal interface for receiving externally transmitted communication signals.

[0008] A signal processing chip is disposed on the lamp board. The signal processing chip is electrically connected to the signal interface to receive and process the communication signal to obtain a control signal.

[0009] A control unit is disposed on the lamp board and electrically connected to the LED beads; the control unit is electrically connected to the signal processing chip to receive the control signal and regulate the LED beads according to the control signal.

[0010] In some embodiments of this application, the control unit includes a driver IC and a row transistor both disposed on the lamp board. The driver IC is electrically connected to the signal processing chip to process a column signal according to the control signal, and the row transistor is electrically connected to the signal processing chip to process a row signal according to the control signal.

[0011] Both the driver IC and the row transistor are electrically connected to the LED beads, so that the driver IC outputs the column signal to the LED beads and the row transistor outputs the row signal to the LED beads, thereby controlling the display of the LED beads.

[0012] In some embodiments of this application, the LED beads, the signal processing chip, the driver IC, and the horizontal output transistor on the lamp board are integrated into a single structure.

[0013] In some embodiments of this application, the lamp board is provided with a power interface, and the LED display screen further includes a power supply line and a power supply, wherein the power supply is electrically connected to the power interface through the power supply line.

[0014] In some embodiments of this application, the power interface is located near the center of the lamp board; and / or, the signal interface is located near the edge of the lamp board.

[0015] In some embodiments of this application, the LED display screen further includes a cabinet, and the display module is disposed on the cabinet; there are multiple display modules, and the multiple display modules are arranged in a multi-row, multi-column splicing pattern on the cabinet.

[0016] In some embodiments of this application, the LED display module further includes a signal connection line, and the signal interfaces on two adjacent display modules are connected through the signal connection line.

[0017] In some embodiments of this application, each display module has a power interface on its lamp board, and the LED display screen also includes a power supply line and a power supply. The power interface of each display module is electrically connected to the power supply through a power supply line.

[0018] In some embodiments of this application, the power supply is disposed on the enclosure and arranged near the center of the enclosure.

[0019] In some embodiments of this application, the lamp board is provided with a plurality of LED beads, and the plurality of LED beads are arranged in a matrix on the lamp board.

[0020] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows: In the LED display screen of this utility model, the signal processing chip can receive and process communication signals, generate control signals, and transmit them to the control unit. The control unit adjusts the LED beads according to the control signals, realizing precise control of parameters such as brightness, color, and flicker of the LED beads. The technical solution of this application can eliminate the setting of the adapter board and receiver card in the traditional LED display screen, which not only simplifies the overall structure of the LED display screen, but also reduces the assembly and testing processes of the adapter board and receiver card in the production process, which can significantly reduce production costs. In addition, the display module of this application can integrate the lamp board, LED beads, signal processing chip, and control unit into a highly integrated module, making the overall structure of the LED display screen more compact, reducing the connection lines and external devices between various components, reducing the overall complexity of the structure, and improving installation speed and production efficiency. Attached Figure Description

[0021] Figure 1 is a structural schematic diagram of an embodiment of the LED display screen of this utility model.

[0022] Figure 2 is a flowchart of the signal control for the LED display screen shown in Figure 1.

[0023] Figure 3 is a schematic diagram of the structure of the LED display screen shown in Figure 1.

[0024] Figure 4 is a schematic diagram of the display module in the LED display screen shown in Figure 1.

[0025] Figure 5 is another example signal control flowchart of the LED display shown in Figure 1.

[0026] The reference numerals in the attached diagram are explained as follows: 100, LED display screen; 10, display module; 11, lamp board; 12, LED beads; 13, signal interface; 14, power interface; 20, signal processing chip; 30, control unit; 31, driver IC; 32, horizontal output transistor; 40, enclosure; 50, power supply; 60, power supply line; 70, signal connection line. Detailed Implementation

[0027] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0028] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] As shown in Figures 1 and 2, one embodiment of this application provides an LED display screen 100, which includes a display module 10, a signal processing chip 20, and a control unit 30.

[0031] The display module 10 includes a lamp board 11 and LED beads 12 disposed on the lamp board 11. The lamp board 11 has a signal interface 13 for receiving externally transmitted communication signals. A signal processing chip 20 is disposed on the lamp board 11 and electrically connected to the signal interface 13 to receive and process the communication signals to obtain control signals. A control unit 30 is disposed on the lamp board 11 and electrically connected to the LED beads 12. The control unit 30 is also electrically connected to the signal processing chip 20 to receive control signals and adjust the LED beads 12 according to the control signals.

[0032] In the LED display screen 100 of this application, the signal processing chip 20 can receive and process communication signals, generate control signals, and transmit them to the control unit 30. The control unit 30 adjusts the LED beads 12 according to the control signals to achieve precise control of parameters such as brightness, color, and flicker of the LED beads 12. The technical solution of this application can eliminate the setting of the adapter board and receiver card in the traditional LED display screen 100, which not only simplifies the overall structure of the LED display screen 100, but also reduces the assembly and testing processes of the adapter board and receiver card in the production process, and can significantly reduce production costs. In addition, the display module 10 of this application can integrate the lamp board 11, LED beads 12, signal processing chip 20 and control unit 30 into a highly integrated module, making the overall structure of the LED display screen 100 more compact, reducing the connection lines and external devices between various components, reducing the overall complexity of the structure, and improving installation speed and production efficiency.

[0033] In some embodiments of this application, as shown in FIG3, the LED display screen 100 may further include a housing 40, and the display module 10 is disposed on the housing 40. The side of the lamp board 11 facing away from the LED beads 12 can be fixed to the housing 40, and the housing 40 can provide physical support and protection for the display module 10.

[0034] In some examples, the enclosure 40 can be made of metal. Aluminum alloys and steel can be used, balancing strength, heat dissipation, and corrosion resistance; aluminum-magnesium alloys can also be used to reduce weight. In other examples, the enclosure 40 can also be a combination of an aluminum alloy frame and a steel structure, or an aluminum alloy frame and composite materials, to achieve both portability and aesthetics.

[0035] In some examples, the enclosure 40 may include a frame, a face shield, and a rear cover. The frame, face shield, and rear cover may be integrally molded to improve the overall sealing of the enclosure 40.

[0036] In some embodiments of this application, a display module 10 is mounted on the front of the housing 40. The LED display screen 100 may also include a power supply 50, which may be installed on the back, inside, or side of the housing 40. The power supply 50 can provide power to the display module 10 and the various components on the lamp board 11.

[0037] As shown in Figures 1, 3 and 4, in this application, the display module 10 includes a lamp board 11 and LED beads 12 disposed on the lamp board 11. The lamp board 11 is provided with a signal interface 13, which is used to receive externally transmitted communication signals.

[0038] The light board 11 has a signal interface 13 directly installed on it, allowing external communication signals to be transmitted directly to the light board 11 without needing to go through too many adapters or intermediate devices. This design not only shortens the transmission path of external communication signals but also reduces the delay and loss that may occur during the transmission process, enabling the communication signals to reach the light board 11 more quickly and accurately, thereby controlling the display of the LED beads 12.

[0039] Furthermore, integrating the signal interface 13 onto the lamp board 11 allows the display module 10 to become a more independent and complete unit. This integrated design helps improve the overall performance and stability of the display module 10 and reduces the impact of external factors on signal transmission and display effects. In addition, the display module 10 with its independent signal interface 13 can be used as a standard module, facilitating combination and expansion in different display systems.

[0040] In some examples, signal interface 13 can be configured as a Type-C interface. The Type-C interface enables high-speed data transmission, improves device compatibility, simplifies the overall device architecture, and enhances user experience, making it particularly suitable for application scenarios that require miniaturization, high integration, and mobile connectivity.

[0041] In other examples, in addition to the Type-C interface, signal interface 13 can also be configured as an HDMI interface, USB interface, optical interface, etc. Furthermore, signal interface 13 can also be a wireless transmission interface, such as WiFi, Bluetooth, NFC, etc.

[0042] In some embodiments of this application, multiple signal interfaces 13 may be provided on the lamp board 11, and the multiple signal interfaces 13 are arranged at intervals on the lamp board 11.

[0043] Multiple signal interfaces 13 can share the data transmission load, avoiding signal attenuation or delay caused by excessive load on a single interface, which is especially suitable for high-speed, high-resolution display scenarios. The spaced arrangement of multiple signal interfaces 13 can reduce electromagnetic interference between interfaces, reduce signal coupling effects, and improve signal integrity.

[0044] In some examples, the signal interface 13 can be located at the edge of the lamp board 11. By placing the signal interface 13 at the edge of the lamp board 11, external cables can be directly connected from the edge of the lamp board 11 without having to pass through the central area of ​​the lamp board 11, thus avoiding physical interference between the cables and the LED beads 12 and circuit components, reducing installation difficulty and wiring complexity.

[0045] Furthermore, in the splicing display device, the signal interface 13 located at the edge of the lamp panel 11 can be directly connected to the corresponding signal interface 13 of the adjacent display module 10 to achieve seamless splicing, reduce cable length and crossing, and improve the overall structural compactness.

[0046] In some examples, two signal interfaces 13 can be provided on the lamp panel 11, and the two signal interfaces 13 are arranged opposite each other on both sides of the lamp panel 11. When multiple display modules 10 are spliced ​​together, the signal interfaces 13 on the lamp panels 11 of two adjacent display modules 10 can be directly connected to form an electrical connection.

[0047] In some embodiments of this application, a power supply interface 14 may also be provided on the lamp board 11. The LED display screen 100 also includes a power supply cable 60. The power supply 50 provided on the housing 40 can be electrically connected to the power supply interface 14 via the power supply cable 60 to enable the power supply 50 to supply power to the display module 10 and the components on the lamp board 11.

[0048] The power supply interface 50 14 is directly set on the lamp board 11, which shortens the transmission distance from the power supply 50 to the components on the lamp board 11, reduces voltage loss caused by cable impedance, ensures balanced voltage and current of the display module 10, and avoids uneven brightness or component damage caused by insufficient power supply.

[0049] Furthermore, the power supply interface 14 of the lamp board 11 is independently connected to the power supply 50 on the cabinet 40, supporting independent power-off maintenance of the display module 10. For example, when replacing the faulty lamp board 11, it is not necessary to disconnect the power supply 50 of the entire system, which greatly shortens the maintenance time and reduces the impact of downtime.

[0050] In some examples, the power supply interface 50 14 can be positioned close to the center of the lamp board 11. When the power supply interface 50 14 supplies power to the surrounding LED beads 12 and various components from the center, the average distance of the cable to each area is shorter, which can reduce the wire impedance, reduce voltage loss, ensure the consistency of the power supply voltage between the edge area and the center area of ​​the lamp board 11, and avoid uneven brightness or abnormal operation of components due to edge voltage drop.

[0051] Furthermore, in this application, the lamp board 11 is also provided with a signal processing chip 20 and a control unit 30. The signal processing chip 20 is electrically connected to the signal interface 13 to receive and process communication signals to obtain control signals. The control unit 30 is electrically connected to the signal processing chip 20 and the LED beads 12, and the control unit 30 is capable of receiving control signals and adjusting the LED beads 12 according to the control signals.

[0052] The communication signals received by the signal interface 13 can be directly decoded / converted in real time by the signal processing chip 20 set on the lamp board 11. This avoids the multi-level forwarding delay in traditional technical solutions, where the signal needs to go through the receiving card, then from the receiving card to the adapter board, and then from the adapter board to the lamp board 11. This is especially suitable for high refresh rate display or real-time interactive display scenarios, ensuring screen synchronization.

[0053] In some examples, the signal processing chip 20 can integrate processing modules such as noise reduction and compensation algorithms to preprocess the input communication signals, such as grayscale correction and color space conversion, to ensure that the control signals received by the control unit 30 are accurate and reliable, avoid display abnormalities caused by signal distortion, and ensure the high-quality display effect of the LED display screen 100.

[0054] As shown in Figure 5, in some embodiments of this application, the control unit 30 may include a driver IC 31 and a row transistor 32, both disposed on the lamp board 11. The driver IC 31 is electrically connected to the signal processing chip 20 to process column signals according to control signals. The row transistor 32 is electrically connected to the signal processing chip 20 to process row signals according to control signals.

[0055] Both the driver IC31 and the row transistor 32 are electrically connected to the LED bead 12, so that the driver IC31 outputs column signals to the LED bead 12 and the row transistor 32 outputs row signals to the LED bead 12, thereby controlling the display of the LED bead 12.

[0056] In this application, multiple LED beads 12 can be set on the lamp board 11, and the multiple LED beads 12 can be arranged in a matrix on the lamp board 11. Then, each bead has its corresponding row and column coordinates on the lamp board 11. The driver IC 31 is responsible for processing the column signal, and the row transistor 32 is responsible for processing the row signal. This clear division of labor design can perform precise row and column control on each LED bead 12.

[0057] By using precise row and column signals, the on / off state and brightness level of each LED bead 12 can be accurately controlled. For example, when displaying a high-definition image, the color and brightness of each pixel in the image can be accurately presented, greatly improving the image quality of the LED display screen 100 and making the image clearer, more delicate, and more realistic.

[0058] By placing both the driver IC31 and the horizontal output transistor 32 on the lamp board 11, the transmission distance of the signal from the processing end to the LED beads can be shortened. This effectively reduces signal attenuation and interference during transmission, ensuring signal integrity and accuracy. Especially for high-speed signal transmission, short-distance transmission can significantly reduce signal delay, improve the response speed of the LED display screen 100, and make the display of dynamic images smoother.

[0059] In this example, the driver IC 31 and the row transistor 32 can work in parallel, processing column signals and row signals respectively. This parallel processing method greatly improves the efficiency of signal processing, enabling the control of a large number of LED beads 12 in a short time. For example, when displaying high refresh rate videos or performing fast image switching, parallel processing can ensure that all LED beads 12 respond in a timely manner, avoiding screen stuttering or flickering.

[0060] In some examples, the LED beads 12, signal processing chip 20, driver IC 31, and horizontal output transistor 32 on the light board 11 are integrated into one structure.

[0061] Integrating the driver IC 31 and horizontal output transistor 32 with the lamp board 11 results in a more compact structure for the entire display module 10. This compact design reduces the size and weight of the LED display screen 100, facilitating installation and transportation. Especially for applications with high space requirements, such as indoor displays and vehicle-mounted displays, the compact design better meets practical needs.

[0062] Furthermore, the integrated design of the driver IC31 and horizontal output transistor 32 with the lamp board 11 facilitates consistency in large-scale production. During the production process, the lamp board 11 can be uniformly tested and calibrated to ensure that the performance and quality of each display module 10 meet the standards, reducing the increase in production costs caused by individual differences.

[0063] Furthermore, the LED beads 12, signal processing chip 20, driver IC 31, and horizontal output transistor 32 on the lamp board 11 are integrated into one structure. The lamp board 11 is also equipped with a signal interface 13 and a power interface 14, so that each display module 10 is an independent display module. This allows each display module 10 to be offline and self-tested without connecting a signal line after being powered on; or it can be connected to a signal line and tested online by controlling the display through the control system software.

[0064] Furthermore, referring to Figures 1 and 3, in some embodiments of this application, multiple display modules 10 can be provided, and the multiple display modules 10 can be arranged in a multi-row, multi-column splicing manner. The splicing arrangement of multiple display modules 10 can achieve the large-screen display effect of the LED display screen 100.

[0065] In some examples, the power supply 50 is located on the housing 40 and is positioned near the center of the housing 40. The power supply interface 14 of each display module 10 is electrically connected to the power supply 50 via a power supply line 60.

[0066] Placing the power supply 50 close to the center of the enclosure 40 reduces the length variation of the power supply lines 60, lowers voltage drop and losses, and ensures consistent power supply to each display module 10. Furthermore, centralized placement of the power supply 50 facilitates equipment maintenance. Each display module 10 is wired independently; replacement only requires disconnecting the corresponding cable without affecting the display of other display modules 10.

[0067] In some embodiments of this application, the LED display module 10 further includes a signal connection line 70, and the signal interfaces 13 on two adjacent display modules 10 are connected through the signal connection line 70.

[0068] In some examples, the signal interfaces 13 on two adjacent display modules 10 in the same column can be connected via a signal connection cable 70. In some examples, the signal interfaces 13 on two adjacent display modules 10 in the same row can be connected via a signal connection cable 70.

[0069] Adjacent display modules 10 are directly connected via signal connection lines 70, avoiding attenuation, interference, or delay caused by long-distance signal transmission. This ensures that control signals are accurately and quickly transmitted to each module, guaranteeing the display synchronization of multiple display modules 10. Furthermore, this setup enables real-time synchronous signal transmission to adjacent display modules 10, ensuring strict consistency in parameters such as on / off state, brightness, and color of all LED beads 12. This avoids display misalignment, delays, or uneven brightness at splicing boundaries, improving the overall display quality of the large screen.

[0070] For the LED display screen of this application, the signal processing chip can receive and process communication signals, generate control signals, and transmit them to the control unit. The control unit adjusts the LED beads according to the control signals, achieving precise control of parameters such as brightness, color, and flicker of the LED beads. The technical solution of this application eliminates the need for adapter boards and receiver cards in traditional LED displays, simplifying the overall structure of the LED display screen and reducing the assembly and testing processes of adapter boards and receiver cards in the production process, thus significantly reducing production costs. Furthermore, the display module of this application integrates the lamp board, LED beads, signal processing chip, and control unit into a highly integrated module, making the overall structure of the LED display screen more compact, reducing the connection lines and external devices between components, lowering the overall structural complexity, and improving installation speed and production efficiency.

[0071] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. An LED display screen, characterized in that, include: The display module includes a light board and LED beads disposed on the light board. The light board has a signal interface for receiving externally transmitted communication signals. A signal processing chip is disposed on the light board and electrically connected to the signal interface to receive and process the communication signals to obtain control signals. A control unit is disposed on the light board and electrically connected to the LED beads. The control unit is electrically connected to the signal processing chip to receive the control signals and regulate the LED beads according to the control signals.

2. The LED display screen according to claim 1, characterized in that, The control unit includes a driver IC and a row transistor, both disposed on the lamp board. The driver IC is electrically connected to the signal processing chip to process a column signal according to the control signal. The row transistor is electrically connected to the signal processing chip to process a row signal according to the control signal. Both the driver IC and the row transistor are electrically connected to the LED beads, so that the driver IC outputs the column signal to the LED beads, and the row transistor outputs the row signal to the LED beads, thereby controlling the display of the LED beads.

3. The LED display screen according to claim 2, characterized in that, The LED beads, signal processing chip, driver IC, and horizontal output transistor on the lamp board are integrated into one unit.

4. The LED display screen according to claim 1, characterized in that, The lamp board is provided with a power interface, and the LED display screen also includes a power supply line and a power supply, with the power supply being electrically connected to the power interface through the power supply line.

5. The LED display screen according to claim 4, characterized in that, The power interface is located near the center of the lamp panel; and / or, the signal interface is located near the edge of the lamp panel.

6. The LED display screen according to claim 1, characterized in that, The LED display screen also includes a cabinet, and the display modules are disposed on the cabinet; there are multiple display modules, and the multiple display modules are arranged in a multi-row, multi-column splicing pattern on the cabinet.

7. The LED display screen according to claim 6, characterized in that, The LED display screen also includes a signal connection line, through which the signal interfaces on two adjacent display modules are connected.

8. The LED display screen according to claim 6, characterized in that, Each display module has a power interface on its lamp board. The LED display screen also includes a power supply line and a power supply. The power interface of each display module is electrically connected to the power supply through a power supply line.

9. The LED display screen according to claim 8, characterized in that, The power supply is mounted on the enclosure and positioned close to the center of the enclosure.

10. The LED display screen according to claim 1, characterized in that, The lamp board is provided with a plurality of LED beads, which are arranged in a matrix on the lamp board.

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