LED display module and display screen

Abstract

The utility model provides a light-emitting diode (LED) display module and a display screen, and the LED display module comprises a printed circuit board (PCB); the plurality of chip sets are arranged on the PCB in an array manner, and each chip set comprises a plurality of LED chips; the refraction layer is located on the front sides of the multiple chip sets, the refraction layer comprises multiple lenses arranged in an array and multiple connecting sections connecting the multiple lenses together, the multiple lenses correspond to the multiple chip sets one to one, and each connecting section is located between at least two adjacent lenses; and the light blocking support structure is arranged between the PCB and the plurality of connecting sections, the light blocking support structure is provided with a plurality of light transmitting windows which are in one-to-one correspondence with the plurality of chip sets, and the light blocking support structure shields the plurality of connecting sections. According to the technical scheme, the problem that the crosstalk phenomenon among the multiple display areas of the LED display module is increased due to the fact that a supporting structure made of glass or other transparent materials is adopted in the prior art is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of LED display technology, and more specifically, to an LED display module and a display screen. Background Technology

[0002] LED displays can control the distribution of light emitted by chips through optical light-controlling elements, allowing observers at different positions within a certain distance from the screen to see different images. An LED display consists of multiple LED display modules, each including a light board. The light board comprises a PCB board and multiple chipsets, which are arrayed on the PCB board. Each chipset includes multiple LED chips. Currently, the mainstream technologies for achieving this display effect are slit-type masking and lenticular lens grating beam splitting, but both of these methods have significant drawbacks.

[0003] The slit-masking scheme achieves a multi-viewing-zone effect by designing the slit opening size and distance from the screen to allow light emitted by the corresponding sub-chip in each viewing area to propagate to its designated location, while simultaneously blocking light emitted by sub-chips in adjacent viewing areas. However, this results in excessively low brightness across the entire viewing area, leading to a less than ideal display quality. This method does not effectively alter the direction of light propagation; instead, it achieves the multi-viewing-zone effect by blocking stray light from other viewing areas.

[0004] The lenticular lens grating beam splitting scheme utilizes the difference in refractive index between air and lens materials, as well as parameters such as lens curvature, thickness, and intercept. Each LED display module includes a lenticular lens grating positioned in front of the lamp panel. Based on the law of refraction, it alters the direction of light propagation to achieve a multi-viewing-zone display effect. Compared to slit-type blocking schemes, this method offers higher brightness. However, the lenticular lens grating process suffers from severe crosstalk. Crosstalk occurs when light, after being deflected by the lenticular lens grating, is not entirely and accurately distributed within the predetermined viewing zone, with some light propagating into other viewing zones. This results in an observer seeing overlapping images from different viewing zones within a single viewing zone. This problem is particularly pronounced in multi-viewing-zone systems with large viewing angles, as the divergence angle of light is significant, making precise control of the light propagation path difficult. Crosstalk not only affects display quality but also reduces image brightness and contrast. Furthermore, when the lenticular lens grating modulates the light, it causes a decrease in the resolution of the display screen in one direction. The rate of decrease is related to the number of viewing zones, while the resolution in the orthogonal direction remains unchanged. This can lead to a situation where, if there are too many viewing zones, the ratio of horizontal to vertical resolution of the displayed image will be too large, resulting in a significant reduction in the display effect.

[0005] Based on the design principle of multi-view zone three-dimensional light field based on lenticular lens gratings, the lenticular lens grating needs to maintain a certain distance from the light panel to achieve the best display effect. This distance is usually one focal length of the lenticular lens. If the designed lenticular lens grating is directly attached to the light panel, the light cannot be effectively controlled, resulting in blurred and distorted images within the corresponding viewing area. The contrast of the displayed image will decrease accordingly, and crosstalk between different viewing zones will be aggravated, directly affecting the viewer's viewing experience.

[0006] To address the aforementioned issues, one improvement involves attaching a pre-designed lenticular lens grating to a support structure made of glass or other transparent material within the LED display module. This support structure is then fixed to the LED panel to achieve a multi-viewing-zone display effect. While this method can resolve issues of image blurring, distortion, and low contrast by selecting an appropriate thickness of the transparent material to create corresponding optical elements with the lenticular lens grating, thereby positioning the lens's focal length at the corresponding chip position on the LED panel, it is possible to achieve this by using such a material.

[0007] However, the above solution uses glass or other transparent materials, which increases the optical path of light, thereby increasing crosstalk between multiple display areas of the LED display module. Utility Model Content

[0008] The main objective of this invention is to provide an LED display module and display screen to solve the problem in related technologies where the use of glass or other transparent materials in the support structure increases crosstalk between multiple display areas of the LED display module.

[0009] To achieve the above objectives, according to one aspect of the present invention, an LED display module is provided, comprising: a PCB board; multiple chipsets arrayed on the PCB board, each chipset including multiple LED chips; a refractive layer located in front of the multiple chipsets, the refractive layer including multiple lenses arrayed and multiple connecting segments connecting the multiple lenses together, the multiple lenses corresponding one-to-one with the multiple chipsets, each connecting segment located between at least two adjacent lenses; and a light-blocking support structure disposed between the PCB board and the multiple connecting segments, the light-blocking support structure having multiple light-transmitting windows corresponding one-to-one with the multiple chipsets, the light-blocking support structure blocking the multiple connecting segments.

[0010] Furthermore, the light-blocking support structure includes multiple light-blocking side plates and multiple light-blocking front plates. The multiple light-blocking side plates are disposed between the PCB board and multiple connecting sections. Each light-blocking front plate is located in front of a light-blocking side plate. At least one end of each light-blocking front plate extends to the connection between the lens and the connecting section, so that multiple light-transmitting windows are formed between the multiple light-blocking front plates.

[0011] Furthermore, each light-blocking front panel is connected to a light-blocking side panel by welding, bonding, screwing, fasteners, snap-fitting, or integral molding.

[0012] Furthermore, the thickness of the front light-blocking panel is less than or equal to the thickness of the side light-blocking panel.

[0013] Furthermore, each pair of adjacent light-blocking side panels consists of a horizontal plate and a vertical plate, both of which are perpendicular to the front of the PCB board.

[0014] Furthermore, multiple connecting segments are connected to the light-blocking support structure by welding, bonding, screwing, snapping, fasteners, or integral molding.

[0015] Furthermore, when multiple connecting segments are connected to the light-blocking support structure by fasteners, the fasteners include a first positioning hole and a first fastening post. One of the first positioning hole and the first fastening post is disposed on the light-blocking support structure, and the other of the first positioning hole and the first fastening post is disposed on the connecting segment. The first fastening post is fixed in the first positioning hole to fix the multiple connecting segments together with the light-blocking support structure.

[0016] Furthermore, the light-blocking support structure is connected to the PCB board by welding, bonding, screwing, snapping, fasteners, or integral molding.

[0017] Furthermore, when the light-blocking support structure is connected to the PCB board by fasteners, the fasteners include a second positioning hole and a second fastening post. One of the second positioning hole and the second fastening post is disposed on the PCB board, and the other of the second positioning hole and the second fastening post is disposed on the light-blocking support structure. The second fastening post is fixed in the second positioning hole to fix the light-blocking support structure to the PCB board.

[0018] According to another aspect of the present invention, a display screen is provided, comprising a plurality of LED display modules connected together, wherein the LED display modules are the aforementioned LED display modules.

[0019] The LED display module using the technical solution of this utility model includes: a PCB board, multiple chipsets, a refractive layer, and a light-blocking support structure. Multiple chipsets are arrayed on the PCB board, and each chipset includes multiple LED chips. The refractive layer is located in front of the multiple chipsets and includes multiple lenses arranged in an array and multiple connecting segments connecting the lenses together. Each lens corresponds one-to-one with a chipet, and each connecting segment is located between at least two adjacent lenses. The light-blocking support structure is disposed between the PCB board and the multiple connecting segments. The light-blocking support structure has multiple light-transmitting windows corresponding one-to-one with the multiple chipsets and blocks the multiple connecting segments. This light-blocking support structure can both support the refractive layer and block the multiple connecting segments, eliminating the need for support structures made of glass or other transparent materials in related technologies. This reduces crosstalk between multiple display areas. Thus, one support structure in this application can perform multiple functions, simplifying the structure of the LED display module and reducing the precision requirements for LED display module assembly. Therefore, the technical solution of this application effectively solves the problem in related technologies where the use of support structures made of glass or other transparent materials increases crosstalk between multiple display areas of the LED display module. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 A schematic diagram of an embodiment of the LED display module according to the present invention is shown;

[0022] Figure 2 It shows Figure 1 A front view schematic diagram of the LED display module;

[0023] Figure 3 A simplified structural diagram of a comparative example one of the LED display modules according to the present invention is shown;

[0024] Figure 4 A simplified structural diagram of a comparative example two of the LED display module according to the present invention is shown;

[0025] Figure 5 A simplified structural diagram (not shown) of an LED chip according to Embodiment 1 of the LED display module of the present invention is shown.

[0026] Figure 6 A simplified structural diagram of an embodiment two of the LED display module according to the present invention is shown;

[0027] Figure 7A simplified structural diagram of an embodiment three of the LED display module according to the present invention is shown;

[0028] Figure 8 A simplified structural diagram of an embodiment four of the LED display module according to the present invention is shown.

[0029] The above figures include the following reference numerals:

[0030] 1. Refractive layer; 2. Light-blocking support structure;

[0031] 11. LED chip; 12. Lens; 14. Front light-blocking panel; 15. PCB board; 16. Side light-blocking panel; 17. Connecting section; 18. Light-transmitting window; 22. Vertical panel; 23. Horizontal panel. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0033] like Figure 1 , Figure 2 and Figure 5 As shown, this application provides an LED display module. One embodiment of the LED display module includes: a PCB board 15, multiple chipsets, a refractive layer 1, and a light-blocking support structure 2. Multiple chipsets are arrayed on the PCB board 15, and each chipset includes multiple LED chips 11. The refractive layer 1 is located in front of the multiple chipsets and includes multiple lenses 12 arrayed together and multiple connecting segments 17 connecting the lenses 12. Each lens 12 corresponds to one of the multiple chipsets, and each connecting segment 17 is located between at least two adjacent lenses 12. The light-blocking support structure 2 is disposed between the PCB board 15 and the multiple connecting segments 17. The light-blocking support structure 2 has multiple light-transmitting windows 18 corresponding to one of the multiple chipsets, and blocks the multiple connecting segments 17. In this embodiment, the refractive layer 1 is preferably a cylindrical lens grating. Each chipset forms a display area.

[0034] The technical solution of Embodiment 1 of the LED display module includes: a PCB board 15, multiple chipsets, a refractive layer 1, and a light-blocking support structure 2. The light-blocking support structure 2 is disposed between the PCB board 15 and multiple connecting segments 17, blocking the multiple connecting segments 17. In this way, the light-blocking support structure 2 can both support the refractive layer 1 and block the multiple connecting segments 17, eliminating the need for support structures made of glass or other transparent materials in related technologies. This reduces crosstalk between multiple display areas. Thus, one support structure in Embodiment 1 of the LED display module can perform multiple functions, simplifying the structure of the LED display module and reducing the precision requirements for LED display module assembly. Therefore, the technical solution of Embodiment 1 of the LED display module effectively solves the problem in related technologies where the use of support structures made of glass or other transparent materials increases crosstalk between multiple display areas of the LED display module.

[0035] like Figure 1 , Figure 2 and Figure 5 As shown, the light-blocking support structure 2 includes multiple light-blocking side plates 16 and multiple light-blocking front plates 14. The multiple light-blocking side plates 16 are disposed between the PCB board 15 and multiple connecting sections 17. Each light-blocking front plate 14 is located in front of a light-blocking side plate 16, and at least one end of each light-blocking front plate 14 extends to the connection between the lens 12 and the connecting section 17, so that multiple light-transmitting windows 18 are formed among the multiple light-blocking front plates 14. By setting multiple light-blocking side plates 16 and light-blocking front plates 14, the light-transmitting windows 18 can ensure that the light emitted by each LED chip 11 is refracted only through the corresponding lens 12, thereby precisely controlling the light to enter the predetermined viewing area. This design avoids the unintended refraction of light through the connecting section 17, significantly reduces the occurrence of crosstalk, and improves the clarity and contrast of the display effect. Multiple front light-blocking panels 14 obscure multiple connecting segments 17, minimizing crosstalk within the viewing area. Multiple side light-blocking panels 16 ensure that the distance between the LPCB board 15 and the multiple connecting segments 17 is equal to the focal length of the refractive layer 1, thus achieving a better display effect. Furthermore, the placement of the front light-blocking panels 14 eliminates the need for any light-blocking material to be attached to the surface of the refractive layer 1, achieving the goal of reducing crosstalk within the viewing area. The aforementioned display area is the viewing area.

[0036] like Figure 1 , Figure 2 and Figure 5 As shown, each light-blocking front panel 14 is connected to a light-blocking side panel 16 by welding, bonding, screwing, fasteners, snap-fitting, or integral molding. The above connection methods enhance the structural stability and integrity between the light-blocking side panel 16 and the light-blocking front panel 14, reducing the risk of displacement due to vibration or external forces during transportation, installation, and use, thereby ensuring long-term stable display quality and low crosstalk.

[0037] like Figure 1 , Figure 2 and Figure 5 As shown, the thickness of the front light-blocking panel 14 is less than or equal to the thickness of the side light-blocking panel 16. By controlling the thickness of the front light-blocking panel 14 and the side light-blocking panel 16, the lightweight and compact structure is ensured, while also reducing costs. This design reduces additional weight without sacrificing structural support capacity, which is beneficial for the installation and maintenance of the display screen.

[0038] like Figure 1 , Figure 2 and Figure 5 As shown, each pair of adjacent light-blocking side plates 16 consists of a horizontal plate 23 and a vertical plate 22, both of which are perpendicular to the front of the PCB board 15. The vertical arrangement of the horizontal plate 23 and the vertical plate 22 provides stable support, while their position and orientation ensure precise alignment between the lens 12 and the LED chip 11. This allows each lens 12 to accurately focus the light from the corresponding LED chip 11, improving display quality.

[0039] In the existing LED chip arrangement structure, the number of chips in the horizontal and vertical rows is 64×32, which means the resolution is 64×32. In the first embodiment of the LED display module, some LED chips need to be removed to install the light-blocking support structure 2. After the light is split by the refractive layer 1, the resolution of each viewing area will become 24×16, and the ratio of horizontal to vertical resolution is 1.5:1, which makes the resolution of each viewing area close to the display effect of 2.5K. Therefore, by adjusting the number and arrangement rules of the horizontal plate 23 and the vertical plate 22, it is not necessary to tilt the refractive layer 1 to achieve balanced resolution and achieve the goal of balancing the display image resolution of each viewing area.

[0040] like Figure 1 , Figure 2 and Figure 5 As shown, multiple connecting segments 17 are connected to the light-blocking support structure 2 by welding, bonding, screwing, snapping, fasteners, or integral molding. The firm connection between the connecting segments 17 and the light-blocking support structure 2 ensures the stability of the refractive layer 1, avoiding displacement of the refractive layer 1 due to temperature changes or physical stress during use, thereby ensuring that light is always refracted along the designed path and improving the reliability of the display effect.

[0041] like Figure 1 , Figure 2 and Figure 5As shown, when multiple connecting segments 17 are connected to the light-blocking support structure 2 via fasteners, the fasteners include a first positioning hole and a first fastening post. The first fastening post is disposed on the light-blocking support structure 2, and the first positioning hole is disposed on the connecting segment 17. The first fastening post is fixed within the first positioning hole to secure the multiple connecting segments 17 together with the light-blocking support structure 2. Through the cooperation of the first positioning hole and the first fastening post, precise alignment and stable connection between the connecting segments 17 and the light-blocking support structure 2 are achieved. This connection method not only simplifies the assembly process and improves assembly efficiency, but also ensures that no unnecessary displacement occurs between the refractive layer 1 and the light-blocking support structure 2 during the operation of the LED display module, reducing crosstalk and improving the stability of the display effect. The refractive layer 1 does not need to be directly bonded to the transparent glass material of related technologies to achieve the assembly of the refractive layer 1 and the light-blocking support structure 2, and the overall structure is relatively lightweight.

[0042] In other embodiments, the first positioning hole is provided on the light-blocking support structure 2, and the first fastening post is provided on the connecting section 17.

[0043] like Figure 1 , Figure 2 and Figure 5 As shown, the light-blocking support structure 2 is connected to the PCB board 15 by welding, bonding, screwing, snapping, fasteners, or integral molding. This robust connection between the light-blocking support structure 2 and the PCB board 15 ensures the structural stability of the entire LED display module. This connection method effectively prevents relative movement between the PCB board 15 and the refractive layer 1 caused by external factors, thereby ensuring precise alignment between each LED chip 11 and its corresponding lens 12, improving the consistency and reliability of the display effect.

[0044] like Figure 1 , Figure 2 and Figure 5 As shown, when the light-blocking support structure 2 is connected to the PCB board 15 via fasteners, the fasteners include a second positioning hole and a second fastening post. The second fastening post is disposed on the PCB board 15, and the second positioning hole is disposed on the light-blocking support structure 2. The second fastening post is fixed within the second positioning hole to secure the light-blocking support structure 2 to the PCB board 15. The structure of the second positioning hole and the second fastening post achieves precise alignment and a secure connection between the light-blocking support structure 2 and the PCB board 15. This design not only improves assembly accuracy but also ensures that the relative position between the light-blocking support structure 2 and the PCB board 15 does not change under various operating conditions. This guarantees that the light emitted by each LED chip 11 can be accurately refracted through the corresponding lens 12, reducing crosstalk and improving the clarity and stability of the display effect.

[0045] In other embodiments, the second positioning hole is disposed on the PCB board 15, and the second fastening post is disposed on the light-blocking support structure 2.

[0046] In the first embodiment of the LED display module, the intercept length of the lens 12 is equal to the spacing length of the three LED chips 11. The center position of the curved lens 12 of the refractive layer 1 is aligned with the center position of the three LED chips 11, while the non-curved connecting segment 17 of the refractive layer 1 is directly attached to the light-blocking support structure 2. The advantage of this is that it can prevent the chip light in one cycle from propagating to the adjacent lens 12 and deflecting its optical path, causing unnecessary crosstalk. At the same time, it can avoid the crosstalk phenomenon in the viewing area caused by the small curvature of the lens 12 causing the connecting segment 17 to deflect within one cycle. In addition, it can also play a role in fixing the lens. Using the formula s+|X H |=f(where f is the focal length, s is the distance between lens 12 and LED chip 11, X H The optimal placement of lens 12 can be calculated by taking the position of the main plane of lens 12. The height of the light-blocking support structure 2 can be designed based on the calculated value, thereby achieving a high-quality light field display effect.

[0047] The assembly process of Embodiment 1 of this application is as follows.

[0048] First step: Use metal stamping process to make light-blocking support structure 2 and set the second positioning hole.

[0049] First, a grid-shaped light-blocking support structure 2 is made using a metal stamping process to support the cylindrical lens grating. A series of second positioning holes are set on the light-blocking support structure 2 to better position the cylindrical lens grating. At the same time, the light-blocking support structure 2 and the cylindrical lens grating are fixed as a whole onto the PCB board.

[0050] The second step is to use injection molding to fabricate a cylindrical lens grating and to set the first positioning hole at the side edge of the cylindrical lens grating.

[0051] Based on the principles of geometric optics, the radius of curvature, intercept, and distance from the screen of the cylindrical lens are designed. Then, the cylindrical lens grating is manufactured by injection molding based on the designed cylindrical lens. In addition, a first positioning hole is set at the edge of the cylindrical lens grating so that the cylindrical lens grating and the light-blocking support structure 2 can be fixed together on the PCB board.

[0052] Third step: Fix the cylindrical lens grating and the light-blocking support structure 2 together onto the PCB board according to the first and second positioning holes.

[0053] The grid-like light-blocking support structure 2 and the lenticular lens grating are fixed to the PCB board with screws. Achieving this alignment requires high-precision component processing. Alternatively, the support structure can be fixed to the PCB board by soldering or by creating a second positioning hole in the light-blocking support structure 2. Then, the lenticular lens film is fixed to the light-blocking support structure 2 with adhesive. The aforementioned lenticular lens grating is a film structure or a layer structure.

[0054] This application takes three display areas (viewing areas) as an example, namely viewing area number 1, viewing area number 2 and viewing area number 3. Figures 3 to 8 The assembly methods for different structures of LED display modules are given, among which, Figure 5 The three-view spectral configuration was fabricated for Embodiment 1 of the LED display module, and Figures 6 to 8 For comparison with the other three cases (Embodiments 2 to 4 of LED display modules), the case of only LED display modules with LED chips and the positional relationship between traditional lenticular lens arrays and LED chips are also introduced as comparative examples (Comparative Example 1 and Comparative Example 2 of LED display modules). The relevant simulation data are given in Table 1 below.

[0055] Comparative Example 1 uses an LED chip without any optical components for light control. This example is only used to compare the crosstalk rate and brightness ratio with Comparative Example 2 and other embodiments at three corresponding viewing positions, and its brightness value is used as a reference value.

[0056] Comparative Example 2 is a traditional cylindrical lens grating beam splitting method. Unlike Example 1, this method directly places the cylindrical lens grating in front of the LED chip for beam splitting.

[0057] The method in Example 2 is similar to that in Example 1, but unlike the light-blocking support structure design, only two light-blocking side plates are placed on both sides of multiple chipsets, and a light-blocking front plate is covered at the connection section of the cylindrical lens grating film.

[0058] The method in Example 3 is similar to that in Example 1, but differs from the light-blocking support structure design in that the grid support lacks a light-blocking front plate, and the light-blocking front plate in Example 1 is missing at the connection section of the cylindrical lens grating film.

[0059] The method in Example 4 is different from that in Example 1, but similar to that in Comparative Example 2. Unlike the light-blocking support structure design, there is no light-blocking side plate. Only the light-blocking front plate is covered at the connection section of the cylindrical lens grating film.

[0060] Table 1 shows the crosstalk rate and luminance percentage of the comparative and embodiment examples after simulation. The luminance percentage is based on the luminance value of Comparative Example 1. Other luminance percentage data in the table represent the percentage increase in luminance value relative to the value of Comparative Example 1.

[0061] Table 1

[0062]

[0063] This application also provides a display screen, an embodiment of which includes a plurality of connected LED display modules, wherein the LED display modules are as described above. Because the aforementioned LED display modules can solve the problem in related technologies where the use of glass or other transparent materials in the support structure increases crosstalk between multiple display areas of the LED display module, the display screen including this LED display module can solve the same technical problem.

[0064] Moreover, the display screen, which integrates multiple LED display modules using the aforementioned technologies, not only boasts high brightness and low crosstalk, but also exhibits greater structural stability due to the presence of the light-blocking support structure 2, reducing display quality issues caused by assembly errors. Furthermore, by controlling the thickness and connection method of the light-blocking support structure 2, the display screen maintains its display quality while also being lightweight and easy to install and maintain, thus enhancing user experience and market competitiveness.

[0065] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0066] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0067] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An LED display module, characterized in that, include: PCB board (15); Multiple chipsets are arrayed on the PCB board (15), and each chipset includes multiple LED chips (11); A refractive layer (1) is located on the front side of the plurality of chipsets. The refractive layer (1) includes a plurality of lenses (12) arranged in an array and a plurality of connecting segments (17) connecting the plurality of lenses (12) together. The plurality of lenses (12) correspond one-to-one with the plurality of chipsets. Each connecting segment (17) is located between at least two adjacent lenses (12). A light-blocking support structure (2) is disposed between the PCB board (15) and the multiple connecting segments (17). The light-blocking support structure (2) is provided with multiple light-transmitting windows (18) corresponding to the multiple chipsets. The light-blocking support structure (2) blocks the multiple connecting segments (17).

2. The LED display module according to claim 1, characterized in that, The light-blocking support structure (2) includes multiple light-blocking side plates (16) and multiple light-blocking front plates (14). The multiple light-blocking side plates (16) are disposed between the PCB board (15) and the multiple connecting sections (17). Each light-blocking front plate (14) is located in front of one of the light-blocking side plates (16). At least one end of each light-blocking front plate (14) extends to the connection between the lens (12) and the connecting section (17) so that the multiple light-blocking front plates (14) form multiple light-transmitting windows (18).

3. The LED display module according to claim 2, characterized in that, Each of the light-blocking front panels (14) and one of the light-blocking side panels (16) are connected by welding, bonding, screwing, fasteners, snap-fitting, or integral molding.

4. The LED display module according to claim 2, characterized in that, The thickness of the light-blocking front plate (14) is less than or equal to the thickness of the light-blocking side plate (16).

5. The LED display module according to claim 2, characterized in that, Each pair of adjacent light-blocking side plates (16) consists of a horizontal plate (23) and a vertical plate (22) arranged vertically, with the horizontal plate (23) and the vertical plate (22) both perpendicular to the front of the PCB board (15).

6. The LED display module according to claim 2, characterized in that, The multiple connecting segments (17) are connected to the light-blocking support structure (2) by welding, bonding, screwing, snapping, fasteners, or integral molding.

7. The LED display module according to claim 6, characterized in that, When the multiple connecting segments (17) are connected to the light-blocking support structure (2) by fasteners, the fasteners include a first positioning hole and a first fastening post. One of the first positioning hole and the first fastening post is disposed on the light-blocking support structure (2), and the other of the first positioning hole and the first fastening post is disposed on the connecting segment (17). The first fastening post is fixed in the first positioning hole to fix the multiple connecting segments (17) together with the light-blocking support structure (2).

8. The LED display module according to claim 2, characterized in that, The light-blocking support structure (2) is connected to the PCB board (15) by welding, bonding, screwing, snapping, fasteners, or integral molding.

9. The LED display module according to claim 8, characterized in that, When the light-blocking support structure (2) is connected to the PCB board (15) by fasteners, the fasteners include a second positioning hole and a second fastening post. One of the second positioning hole and the second fastening post is disposed on the PCB board (15), and the other of the second positioning hole and the second fastening post is disposed on the light-blocking support structure (2). The second fastening post is fixed in the second positioning hole to fix the light-blocking support structure (2) and the PCB board (15) together.

10. A display screen comprising a plurality of interconnected LED display modules, characterized in that, The LED display module is the LED display module according to any one of claims 1 to 9.

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