Lamp plate assembly and LED display module with same

Abstract

This invention provides a lamp panel assembly and an LED display module having the same. The lamp panel assembly includes: a first circuit board; and a plurality of LED light-emitting units spaced apart along the length of the first circuit board. Each LED light-emitting unit includes at least one LED light-emitting portion, and each LED light-emitting portion includes a second circuit board and a light-emitting element disposed on the second circuit board. The sidewall of the second circuit board is connected to the first circuit board, and a predetermined angle is formed between the second circuit board and the first circuit board. The light-emitting element is disposed on the surface of the second circuit board, and the light-emitting normal of the light-emitting element is perpendicular to the second circuit board. The second circuit board of at least a portion of the LED light-emitting portions in the LED light-emitting units is inclined relative to the length direction of the first circuit board. The technical solution of this application effectively solves the problem of complex structure of naked-eye 3D display devices caused by using lens arrays to achieve 3D display in related technologies.

Description

Technical Field

[0001] This invention relates to the field of three-dimensional display technology, and more specifically, to a lamp panel assembly and an LED display module having the same. Background Technology

[0002] Multi-viewing area (MLIA) technology is a direction of 3D display technology. Specifically, it achieves MLA by making the light emitted by each pixel directional. Traditional MLA technology mainly relies on auxiliary devices such as stereoscopic glasses, polarized light, and shutter glasses. Although these methods can achieve MLA effects, the user experience is poor, and prolonged use may cause visual fatigue.

[0003] In related technologies, a lens array can be used, that is, a set of lenses is set in front of the display screen, and combined with corresponding algorithms, the direction of light emitted by each pixel is controlled, thereby adjusting the light emission direction of the display screen, so as to see different images from different viewing angles and realize multi-view zone display. However, setting up a lens array makes the structure of the naked-eye 3D display device more complex, and requires high geometric and assembly precision of the lens array, resulting in higher costs. Summary of the Invention

[0004] The main objective of this invention is to provide a lamp panel assembly and an LED display module having the same, so as to solve the problem of complex structure of naked-eye 3D display devices caused by the use of lens arrays to achieve 3D display in related technologies.

[0005] To achieve the above objectives, according to one aspect of the present invention, a lamp panel assembly is provided, comprising: a first circuit board; a plurality of LED light-emitting units, the plurality of LED light-emitting units being spaced apart along the length direction of the first circuit board, each LED light-emitting unit including at least one LED light-emitting portion, each LED light-emitting portion including a second circuit board and a light-emitting element disposed on the second circuit board, the sidewall of the second circuit board being connected to the first circuit board, the second circuit board and the first circuit board having a preset angle, the light-emitting element being disposed on the surface of the second circuit board, the light-emitting normal of the light-emitting element being perpendicular to the second circuit board; wherein, the second circuit board of at least a portion of the LED light-emitting portions of the LED light-emitting units is inclined relative to the length direction of the first circuit board.

[0006] Furthermore, the second circuit board is vertically positioned relative to the first circuit board.

[0007] Furthermore, the first circuit board is a circuit board, and multiple mounting parts are provided on the surface of the first circuit board. The multiple mounting parts are provided one-to-one with multiple LED light-emitting parts. The mounting parts include multiple metal disks. Multiple connecting parts are provided on the side of the second circuit board that is connected to the first circuit board. The multiple connecting parts are provided one-to-one with multiple metal disks.

[0008] Furthermore, each metal disk is fan-shaped, and multiple metal disks are coaxially arranged. The axis of the metal disks is perpendicular to the first circuit board, and / or the connecting part is a metallized connecting hole that penetrates the second circuit board along the thickness direction of the second circuit board.

[0009] Furthermore, a plurality of grooves are provided at intervals on the side of the first circuit board near the light-emitting element of the LED light-emitting part. The plurality of grooves penetrate the first circuit board along the thickness direction of the first circuit board, and each groove is provided corresponding to one LED light-emitting unit.

[0010] Furthermore, the lamp panel assembly also includes multiple light guide separators, which are disposed on the first circuit board and correspond one-to-one with multiple LED light-emitting parts.

[0011] Furthermore, the light guide separator includes a light guide block, on which a light-emitting groove is provided. The light-emitting groove includes a light-emitting channel and a receiving cavity. The LED light-emitting part is located in the receiving cavity. The receiving cavity is located on the side of the light-emitting channel near the second circuit board. The light-emitting channel extends along the light-emitting normal direction of the LED light-emitting part.

[0012] Furthermore, at least a portion of the structure of the light-emitting channel has multiple protruding teeth on its sidewalls.

[0013] Furthermore, the light guide separator includes a reflector, the surface of which near the light-emitting element is an off-axis paraboloid to reflect the light from the LED light-emitting part corresponding to the light guide separator; or, the light guide separator is a lens.

[0014] According to another aspect of the present invention, an LED display module is provided, including a bottom shell and a lamp panel assembly disposed on the bottom shell. The lamp panel assembly is the lamp panel assembly described above. There are multiple lamp panel assemblies, which are spaced apart. The light emission direction of each LED light-emitting part of each lamp panel assembly is away from the bottom shell.

[0015] Furthermore, the bottom shell includes a mounting circuit board, on which multiple connectors are provided, and the first circuit board of the lamp panel assembly is connected to the connectors.

[0016] According to the technical solution of this invention, the lamp board assembly includes a first circuit board and multiple LED light-emitting units. The first circuit board can support the multiple LED light-emitting units. The second circuit board can support the light-emitting elements and control the light emission of the light-emitting elements. A preset angle exists between the second circuit board and the first circuit board, and the light emission normal of the light-emitting element is perpendicular to the second circuit board. The second circuit board is inclined relative to the length direction of the first circuit board for at least a portion of the LED light-emitting parts in the LED light-emitting units. This allows the position of the multiple LED light-emitting units relative to the first circuit board to be arranged so that the light emission direction of each light-emitting element points to a different viewing area, thereby achieving naked-eye 3D display without the need for a lens array in front of the light-emitting elements, thus simplifying the structure of the naked-eye 3D display device. Therefore, the technical solution of this application effectively solves the problem of complex structure of naked-eye 3D display devices caused by the use of lens arrays in related technologies. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the lamp panel assembly according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 A magnified view of part A of the lamp panel assembly;

[0020] Figure 3 It shows Figure 1 A front view schematic diagram of the LED light-emitting part of the light panel assembly;

[0021] Figure 4 It shows Figure 1 A front view schematic diagram of the first circuit board of the lamp panel assembly;

[0022] Figure 5 It shows Figure 4 A magnified view of part B on the first circuit board;

[0023] Figure 6 It shows Figure 1 A top view of the LED light-emitting part of the lamp panel assembly connected to the first circuit board;

[0024] Figure 7 It shows Figure 1 A front view schematic diagram of the light guide separator of the lamp panel assembly connected to the first circuit board;

[0025] Figure 8 It shows Figure 7 A magnified view of part C of the lamp panel assembly;

[0026] Figure 9 A three-dimensional structural schematic diagram of a reflector according to another embodiment of the lamp panel assembly of the present invention is shown;

[0027] Figure 10 A three-dimensional structural schematic diagram of an embodiment of an LED display module according to the present invention is shown;

[0028] Figure 11 It shows Figure 10 A magnified view of part D of the LED display module.

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

[0030] 10. First circuit board; 11. Mounting part; 111. Metal disk; 1111. First metal disk; 1112. Second metal disk; 1113. Third metal disk; 1114. Fourth metal disk; 12. Groove; 20. LED light-emitting unit; 21. LED light-emitting part; 211. Second circuit board; 2111. Connecting part; 212. Light-emitting element; 30. Light guide separator; 31. Light guide separator block; 311. Light-emitting groove; 3111. Light-emitting channel; 31111. Convex tooth; 3112. Receiving cavity; 32. Reflector; 321. Off-axis parabolic surface; 100. Bottom shell; 101. Mounting circuit board. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, 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 invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0034] like Figure 1 and Figure 2 As shown, the lamp panel assembly of this embodiment includes a first circuit board 10 and a plurality of LED light-emitting units 20. The plurality of LED light-emitting units 20 are spaced apart along the length direction of the first circuit board 10. Each LED light-emitting unit 20 includes at least one LED light-emitting portion 21. Each LED light-emitting portion 21 includes a second circuit board 211 and a light-emitting element 212 disposed on the second circuit board 211. The sidewall of the second circuit board 211 is connected to the first circuit board 10, and a predetermined angle is formed between the second circuit board 211 and the first circuit board 10. The light-emitting element 212 is disposed on the surface of the second circuit board 211, and the light-emitting normal of the light-emitting element 212 is perpendicular to the second circuit board 211. Specifically, the second circuit board 211 of at least a portion of the LED light-emitting portions 21 in the LED light-emitting units 20 is inclined relative to the length direction of the first circuit board 10.

[0035] Applying the technical solution of this embodiment, the lamp board assembly includes a first circuit board 10 and a plurality of LED light-emitting units 20. The first circuit board 10 can support the plurality of LED light-emitting units 20. The second circuit board 211 can support the light-emitting element 212 and can control the light emission of the light-emitting element. The second circuit board 211 and the first circuit board 10 have a preset angle, and the light emission normal of the light-emitting element 212 is perpendicular to the second circuit board 211. The second circuit board 211 is inclined relative to the length direction of the first circuit board 10 for at least a portion of the LED light-emitting part 21 in the LED light-emitting unit 20. This allows the position of the plurality of LED light-emitting units 20 relative to the first circuit board 10 to be arranged so that the light emission direction of each light-emitting element 212 points to a different viewing area, thereby realizing naked-eye 3D display without the need to set a lens array in front of the light-emitting element 212 to achieve 3D display, making the structure of the naked-eye 3D display device simpler. Therefore, the technical solution of this embodiment effectively solves the problem of complex structure of naked-eye 3D display devices caused by the use of lens arrays to achieve 3D display in related technologies.

[0036] It should be noted that the light-emitting element 212 can be an LED lamp bead, that is, the LED lamp bead is encapsulated with a red light-emitting chip, a green light-emitting chip and a blue light-emitting chip. Of course, the light-emitting element can also include only a red light-emitting chip, a green light-emitting chip and a blue light-emitting chip. The red light-emitting chip, the green light-emitting chip and the blue light-emitting chip are directly mounted on the second circuit board 211, and the red light-emitting chip, the green light-emitting chip and the blue light-emitting chip are not encapsulated.

[0037] In other embodiments, the first circuit board 10 may also be a support plate that only supports the LED light-emitting unit 20. In this case, the second circuit board 211 can be powered by wires.

[0038] The first circuit board 10 can be a single unit or multiple interconnected boards, with each LED light-emitting unit 20 corresponding to a board segment.

[0039] The second circuit board 211 and the first circuit board 10 have a preset angle between them. The preset angle refers to the angle between the side of the second circuit board closer to the first circuit board and the side of the first circuit board closer to the second circuit board.

[0040] The second circuit board 211 and the first circuit board 10 have a first preset tilt angle along their length. The first preset tilt angle can be 0°, 20° or 40°, or of course, other angles.

[0041] The light-emitting element 212 has a second preset tilt angle between its light-emitting normal and the length direction of the first circuit board 10, and the sum of the second preset tilt angle and the first preset tilt angle is 90°.

[0042] The number of LED light-emitting parts 21 in an LED light-emitting unit 20 can be one, two, or three. When there is one LED light-emitting part 21 in an LED light-emitting unit 20, the LED light-emitting part 21 is positioned directly above the groove 12. When there are two LED light-emitting parts 21 in an LED light-emitting unit 20, the two LED light-emitting parts 21 are symmetrically arranged along the length of the first circuit board 10. When there are three LED light-emitting parts 21 in an LED light-emitting unit 20, the three LED light-emitting parts 21 are arranged alternately along the length of the first circuit board 10, with the two outer LED light-emitting parts 21 symmetrically arranged about the middle LED light-emitting part 21, and the middle LED light-emitting part 21 positioned directly above the groove 12.

[0043] It should be noted that the length of the first circuit board 10 is greater than or equal to 5 mm and less than or equal to 500 mm. Specifically, it can be 5 mm, 10 mm, 50 mm, 100 mm, 200 mm, 250 mm, 300 mm, 350 mm, 400 mm, or 500 mm, or other values. In this embodiment, the length of the first circuit board 10 is 250 mm.

[0044] The thickness of the first circuit board 10 is greater than or equal to 0.5 mm and less than or equal to 4 mm. Specifically, it can be 0.5 mm, 1 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, or 4 mm, or other values. In this embodiment, the thickness of the first circuit board 10 is 1 mm.

[0045] The width of the first circuit board 10 is greater than or equal to 5 mm and less than or equal to 20 mm. Specifically, it can be 5 mm, 7 mm, 10 mm, 13 mm, 15 mm, 17 mm, or 20 mm, or other values. In this embodiment, the width of the first circuit board 10 is 15 mm.

[0046] like Figure 1 and Figure 2 As shown, in this embodiment, the second circuit board 211 is perpendicularly arranged to the first circuit board 10. This arrangement reduces interference from the first circuit board 10 with the light emitted by the light-emitting element 212. Specifically, when the bottom surface of the second circuit board 211 forms an acute angle with the first circuit board 10 and the light-emitting element is located between the two circuit boards, the first circuit board 10 will block the light emitted by the light-emitting element 212. When the bottom surface of the second circuit board 211 forms an obtuse angle with the first circuit board 10 and the light-emitting element 212 is located within the obtuse angle region between the two circuit boards, the light-emitting element 212 is difficult to install.

[0047] It should be noted that the second circuit board 211 is vertically positioned relative to the first circuit board 10, meaning that the preset included angle is 0°.

[0048] like Figure 1 as well as Figures 4 to 6 As shown, in this embodiment, a plurality of mounting portions 11 are provided on the surface of the first circuit board 10, and the plurality of mounting portions 11 are correspondingly arranged with a plurality of LED light-emitting portions 21. Each mounting portion 11 includes a plurality of metal disks 111. A plurality of connecting portions 2111 are provided on the side of the second circuit board 211 that is connected to the first circuit board 10, and the plurality of connecting portions 2111 are correspondingly arranged with a plurality of metal disks 111. By providing the metal disks 111 and the connecting portions 2111, the second circuit board 211 can be mounted to the first circuit board 10, and the first circuit board 10 can supply power to the second circuit board 211, thereby controlling the light-emitting state of the light-emitting element 212.

[0049] The multiple connecting parts 2111 are a red light-emitting chip connecting part, a green light-emitting chip connecting part, a blue light-emitting chip connecting part, and a common electrode connecting part. That is, the number of connecting parts 2111 corresponds to the number of driving circuits of the pixels.

[0050] like Figure 5 As shown, in this embodiment, each metal disk 111 is fan-shaped, and multiple metal disks 111 are coaxially arranged, with the axis of the metal disks 111 perpendicular to the first circuit board 10. When designing the lamp panel assembly, to achieve three-dimensional display, the relative position of the second circuit board 211 and the first circuit board 10 needs to be properly set. By setting the metal disks 111 to a fan shape and having multiple metal disks 111 coaxially arranged, the second circuit board 211 can still contact the metal disks 111 after rotating around their axis. That is, after adjusting the relative position of the second circuit board 211 and the metal disks 111, the second circuit board 211 can still connect to the metal disks 111.

[0051] It should be noted that, in this embodiment, each mounting part 11 includes four metal disks 111, namely a first metal disk 1111, a second metal disk 1112, a third metal disk 1113, and a fourth metal disk 1114. The first metal disk 1111, the second metal disk 1112, the third metal disk 1113, and the fourth metal disk 1114 are arranged sequentially, with the first metal disk 1111 and the fourth metal disk 1114 arranged symmetrically, and the second metal disk 1112 and the third metal disk 1113 arranged symmetrically. The included angle between the two ends of each metal disk 111 is the same, that is, the distance between the two ends of the first metal disk 1111 is equal to the distance between the two ends of the fourth metal disk 1114, the distance between the two ends of the second metal disk 1112 is equal to the distance between the two ends of the third metal disk 1113, and the distance between the two ends of the first metal disk 1111 is greater than the distance between the two ends of the second metal disk 1112.

[0052] The distance between the two ends of the metal disk 111 can be the distance between the two ends of the metal disk 111 in the circumferential direction, or it can be the shortest distance between the two ends of the metal disk 111.

[0053] There is a third preset tilt angle between the mounting part 11 and the length direction of the first circuit board 10. That is, the angle between the direction of the first metal disk 1111 to the fourth metal disk 1114 and the length direction of the first circuit board 10 is the third preset tilt angle. The third preset tilt angle between each mounting part 11 and the length direction of the first circuit board 10 can be different.

[0054] like Figure 3 As shown, in this embodiment, the connecting portion 2111 is a metallized connecting hole that penetrates the second circuit board 211 along its thickness direction. With this configuration, the solder has more room to flow between the metallized connecting hole and the first circuit board 10, facilitating the connection between the second circuit board 211 and the first circuit board 10.

[0055] It should be noted that the diameter of the metallized connection hole is greater than or equal to 0.1 mm and less than or equal to 0.5 mm. Specifically, it can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm, or other values. In this embodiment, the diameter of the metallized connection hole is 0.3 mm.

[0056] The metallized connection hole is a semi-circular hole.

[0057] During the fabrication of the LED light-emitting part 21, multiple second circuit boards 211 are integrated into a single structure, and circular holes are machined into them. The light-emitting element 212 is transferred to the multiple second circuit boards 211 and soldered using methods such as die bonding and surface mounting. Then, the circuit boards 211 are cut along the radial direction of the circular holes to form multiple second circuit boards 211. Half of a circular hole is located on one second circuit board 211, which is the metallized connection hole of that second circuit board 211. The other half of the circular hole is located on another second circuit board 211 adjacent to that second circuit board 211. That is, the other half of the circular hole is the metallized connection hole on another second circuit board 211 adjacent to that second circuit board 211.

[0058] like Figure 2 and Figure 5 As shown, in this embodiment, a plurality of grooves 12 are provided at intervals on the side of the first circuit board 10 near the light-emitting element 212 of the LED light-emitting part 21. The plurality of grooves 12 penetrate the first circuit board 10 along the thickness direction of the first circuit board 10, and each groove 12 is correspondingly provided with one LED light-emitting unit 20. The grooves 12 can reduce the obstruction of light from the light-emitting element 212 by the first circuit board 10, and facilitate the emission of light from the light-emitting element 212.

[0059] It should be noted that the number of grooves 12 is less than or equal to the number of LED light-emitting units 20.

[0060] Specifically, when a groove 12 corresponding to an LED light-emitting unit 20 is provided on the first circuit board 10 where the LED light-emitting unit 20 is located, if the number of LED light-emitting parts 21 in the LED light-emitting unit 20 is one, the LED light-emitting part 21 is located directly above the groove 12. If the number of LED light-emitting parts 21 in the LED light-emitting unit 20 is two, the two LED light-emitting parts are symmetrically arranged on both sides of the groove 12, and in this case, the groove 12 may not be provided. If the number of LED light-emitting parts 21 in the LED light-emitting unit 20 is three, the middle LED light-emitting part 21 of the three LED light-emitting parts is located directly above the groove 12.

[0061] It should be noted that, Figure 11 Each first circuit board 10 is provided with multiple grooves 12, which facilitates the processing of multiple first circuit boards 10. Some grooves 12 may not be provided.

[0062] like Figure 7 and Figure 8 As shown, in this embodiment, the lamp board assembly further includes multiple light guide separators 30, which are disposed on the first circuit board 10, and each light guide separator 30 corresponds to one of the multiple LED light-emitting parts 21. The light guide separators 30 reduce crosstalk between the LED light-emitting parts 21 and eliminate moiré patterns.

[0063] like Figure 7 and Figure 8 As shown, in this embodiment, the light guide separator 30 includes a light guide separator block 31, on which a light-emitting groove 311 is provided. The light-emitting groove 311 includes a light-emitting channel 3111 and a receiving cavity 3112. The LED light-emitting part 21 is located inside the receiving cavity 3112, which is located on the side of the light-emitting channel 3111 near the second circuit board 211. The light-emitting channel 3111 extends along the light-emitting normal direction of the LED light-emitting part 21. The receiving cavity 3112 can accommodate the LED light-emitting part 21. The light emitted by the light-emitting element 212 can be emitted to the outside of the light guide separator block 31 through the light-emitting channel 3111, that is, the light-emitting channel 3111 can control the light emission direction.

[0064] It should be noted that the multiple light guide partitions 31 can be an integral structure or a separate structure. In this embodiment, the multiple light guide partitions 31 are an integral structure.

[0065] The light-emitting channel 3111 is oriented in the same direction as the light-emitting element 212, pointing towards the set viewing area.

[0066] It should be noted that at least part of the light guide partition 30 has a light output channel 3111 that extends through the light guide partition 30 along its thickness direction. Specifically, whether the light output channel 3111 extends through the light guide partition 30 along its thickness direction can be set according to actual needs.

[0067] The thickness direction of the light guide separator 30 is parallel to the thickness direction of the first circuit board 10.

[0068] like Figure 8 As shown, in this embodiment, at least a portion of the structure of the light-emitting channel 3111 has a plurality of protruding teeth 31111 on its sidewall. Through the above-described arrangement, the light-emitting channel 3111 can control the direction of light and reduce crosstalk in the viewing area.

[0069] It should be noted that multiple protrusions 31111 are provided on both side walls of the light emission channel 3111. The presence of multiple protrusions 31111 results in crosstalk of less than 1% during actual use testing of the lamp panel assembly.

[0070] The tip of the convex tooth 31111 has a rounded corner transition, which facilitates mold forming.

[0071] like Figure 9As shown in this embodiment, in other embodiments, the light guide separator 30 includes a reflector 32. The surface of the reflector 32 near the light-emitting element 212 is an off-axis parabolic surface 321 to reflect the light from the LED light-emitting part 21 corresponding to the light guide separator 30. The off-axis parabolic surface 321 can collect the light from the light-emitting element 212, thereby controlling the direction of light emission.

[0072] It should be noted that the light-emitting element 212 is located on the side of the second circuit board 211 facing the off-axis parabolic surface 321, that is, the light emitted from the light-emitting element 212 directly illuminates the off-axis parabolic surface 321. The light-emitting element 212 is located at the focal point of the off-axis parabolic surface 321, and the focal length of the off-axis parabolic surface 321 is greater than or equal to 0.2 mm and less than or equal to 4 mm. Specifically, it can be 0.2 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.9 mm, 1 mm, 2 mm, 3 mm, or 4 mm, or other values. In this embodiment, the focal length of the off-axis parabolic surface 321 is 0.6 mm.

[0073] In other embodiments, the light guide separator 30 is a lens. The lens is arranged in a one-to-one correspondence with the light-emitting element 212.

[0074] like Figure 10 and Figure 11 As shown, the LED display module of this embodiment includes a base shell 100 and an LED display assembly disposed on the base shell 100. The LED display assembly is the aforementioned LED display assembly. The base shell 100 can support the LED display assembly. The aforementioned LED display assembly, by arranging the positions of multiple LED light-emitting units 20 relative to the first circuit board 10, enables each light-emitting element 212 to emit light in a different viewing area, thereby achieving naked-eye 3D display without the need to place a lens array in front of the light-emitting element 212 to achieve 3D display, making the structure of the naked-eye 3D display device simpler. The LED display device with the aforementioned LED display assembly also has the aforementioned advantages.

[0075] It should be noted that the thickness direction of the first circuit board 10 is parallel to the height direction of the bottom shell 100.

[0076] It should be noted that when the light guide separator 30 is a reflector 32, the relative position of the LED light-emitting part 21 and the reflector 32 can be set according to actual needs, as long as the required light emission angle is achieved. Specifically, in the direction from the bottom shell 100 to the first circuit board 10, at least a part of the structure of the reflector 32 can be located between the LED light-emitting part 21 and the bottom shell 100, or at least a part of the structure of the LED light-emitting part 21 can be located between the reflector 32 and the bottom shell 100. Of course, the relative position between the reflector 32 and the LED light-emitting part 21 can also be other positional relationships.

[0077] Specifically, the groove 12 is provided on the side of the first circuit board 10 away from the bottom shell 100.

[0078] like Figure 10 and Figure 11 As shown, in this embodiment, the LED display components include multiple LEDs, which are spaced apart. The light emission direction of each LED light-emitting part 21 of each LED display component is opposite to the bottom shell 100. By arranging multiple LED display components, naked-eye 3D display can be achieved.

[0079] It should be noted that multiple LED display components are spaced apart along the height of the bottom shell 100.

[0080] Specifically, in this embodiment, such as Figure 11 As shown, Figure 11 The lower left is the top of the bottom shell 100. Figure 11 The bottom of the bottom shell 100 is located at the upper right. The four LED display components at the top of the bottom shell 100, from top to bottom, are the first LED display component, the second LED display component, the third LED display component, and the fourth LED display component. Each LED light-emitting unit 20 in the first LED display component includes two LED light-emitting parts 21. Each LED light-emitting unit 20 in the second LED display component includes three LED light-emitting parts 21. Each LED light-emitting unit 20 in the third LED display component includes two LED light-emitting parts 21. Each LED light-emitting unit 20 in the fourth LED display component includes one LED light-emitting part 21. The first, second, third, and fourth LED display components form a group of LED display components. The LED display module includes multiple groups of LED display components, which are spaced apart along the height of the bottom shell 100. Of course, other arrangements of the multiple LED display components are also possible.

[0081] like Figure 11 As shown, in this embodiment, the mounting structure base 100 includes a mounting circuit board 101, on which multiple connectors are provided. The first circuit board 10 of the lamp board assembly is plugged into the connectors. Through the connectors, the light-emitting element 212 can be made conductive, thereby controlling the light emission of the light-emitting element 212.

[0082] The lamp panel assembly is disposed on the side of the mounting circuit board 101. The bottom shell also includes a housing, on which the mounting circuit board 101 is disposed. The length direction of the first circuit board 10 is perpendicular to the thickness direction of the mounting circuit board 101. The width direction of the first circuit board 10 is parallel to the thickness direction of the mounting circuit board 101. The thickness direction of the first circuit board 10 is perpendicular to the thickness direction of the mounting circuit board 101, and the height direction of the bottom shell 100 is parallel to the height direction of the mounting circuit board 101.

[0083] like Figure 4 As shown, the length direction of the first circuit board 10 is... Figure 4 In the left-right direction, the width direction of the first circuit board 10 is Figure 4 The up and down directions.

[0084] Multiple recesses 12 are provided on the side of the first circuit board 10 away from the mounting circuit board 101.

[0085] It should be noted that the first circuit board 10 is provided with a mating part, which is inserted and mated with the connector so that the mounting circuit board 101 controls the second circuit board 211 through the first circuit board 10.

[0086] The LED display module of this embodiment achieves vectorized precise control of the light emission angle and maintainable structural integration through the collaborative design of the LED light-emitting unit 20 and the first circuit board 10, thereby significantly improving the imaging quality and manufacturing feasibility of naked-eye multi-view display.

[0087] The LED light-emitting unit 20 in this embodiment is a side-emitting LED light-emitting unit. Specifically, the LED light-emitting unit 20 is connected to the mounting part 11 through the connecting part 2111 and then mounted to the first circuit board 10. The first circuit board 10 is disposed on the side of the bottom shell 100.

[0088] The LED display module of this embodiment utilizes advanced optical elements to modulate the light field distribution of the display device, thereby forming a multi-viewing-zone display effect that can be viewed with the naked eye. This embodiment proposes a side-emitting LED light field screen (i.e., multiple side-emitting LED light-emitting units) scheme to achieve high brightness, high contrast, and wide viewing angle consistency for naked-eye multi-viewing-zone display.

[0089] The LED display module in this embodiment has the following characteristics:

[0090] (1) Vectorized angle control of the side-emitting LED light-emitting unit array, that is, vectorized angle control of multiple LED light-emitting units 20: Based on the traditional lamp panel assembly, a side-emitting structure with multiple angles is introduced (that is, the LED light-emitting part 21 of the traditional lamp panel assembly is directly mounted to the mounting circuit board, and the light-emitting normal of the LED light-emitting part 21 is perpendicular to the mounting circuit board). In this embodiment, the multiple LED light-emitting units 20 of the lamp panel assembly of the LED display module form multiple side-emitting structures with different angles. The light-emitting normal of each light-emitting element 212 emits light along the second preset tilt angle, thereby forming a light field with directional distribution characteristics at a single pixel level.

[0091] It should be noted that the LED light-emitting part 21 in this embodiment is not fixed in a traditional front-mount method (i.e., it is not fixed by directly mounting the LED light-emitting part 21 to the mounting circuit board with the light-emitting normal of the LED light-emitting part 21 perpendicular to the mounting circuit board). Instead, it is connected to the circuit board in a suspended manner through the pads on its sidewall (i.e., the second circuit board 211 is connected to the first circuit board 10 through multiple connecting parts 2111), so that the light emission direction of the light-emitting element 212 forms a certain angle with the plane of the first circuit board 10. Based on the above structural features, the LED light-emitting unit in this embodiment is a side-emitting LED light-emitting unit, and the lamp board assembly is a side-emitting lamp board assembly, which is different from the traditional front-emitting packaging form.

[0092] The lamp panel assembly of this embodiment provides a vectorized side-emitting LED light-emitting unit array structure, that is, the side-emitting LED light-emitting units are arranged at different first preset tilt angles to achieve precise modulation of the light emission direction. The LED display module of this embodiment is designed with a light field vector control method, that is, by controlling the orientation of the side-emitting LED light-emitting units, multiple independently observable viewing areas are formed. Specifically, through pre-designed optical and geometric modeling, the first preset tilt angle of each LED light-emitting part 21 is designed, which can achieve precise distribution control of the light field in multiple viewing areas without the need for additional lens arrays. In use, the LED display module of this embodiment can significantly reduce viewing area crosstalk and eliminate moiré effects.

[0093] (2) Universal LED strip structure, i.e., the first circuit board 10 is a universal structure: the first circuit board 10 is provided with pads (i.e., metal disks 111) for side-emitting LED light-emitting units compatible with different first preset tilt angles. The first circuit board 10 has independent disassembly and dust protection functions, supporting highly customized light field application requirements. The LED strip structure design allows side-emitting LED light-emitting units to be mounted on the LED strip structure. Furthermore, the fan-shaped metal disk 111 design allows one mounting part 11 to be compatible with side-emitting LED light-emitting units at different angles. The fan-shaped metal disk 111 design allows the same first circuit board to be compatible with side-emitting LED light-emitting units with different first preset tilt angles during the manufacturing stage, without the need for re-molding, significantly improving versatility and production efficiency. Each LED light strip is equipped with a mating part, that is, each first circuit board 10 is provided with a mating part. The mating part is plugged in and mated with the connector. It can be disassembled and installed independently. The mating part can be quickly installed and replaced. It is connected to the main control circuit through an interface structure, which facilitates the customization of light field under different display requirements.

[0094] (3) Modular optical element design: The display device of this embodiment can flexibly adapt to different optical elements according to the actual viewing area design requirements. Specifically, each light-emitting element 212 has an independent modular optical element to control the light. The modular optical element can be a lens, a reflector (i.e., a reflector 32), or a partition (i.e., multiple light guide partitions 30), etc. Thanks to the independent disassembly and assembly characteristics of the LED light strip structure (i.e., the first circuit board 10 can be independently disassembled and assembled), the light board assembly of this embodiment can be manufactured after all electronic components are soldered to the first circuit board 10, and then the optical elements are assembled, avoiding the limitation of the optical elements needing to withstand high temperatures. The independent installation of optical elements and circuits makes subsequent replacement and maintenance more convenient, while avoiding the impact of high-temperature soldering on the optical elements.

[0095] In other words, the LED display module of this embodiment fundamentally solves the problems of low energy efficiency, high crosstalk, high cost, and low maintainability in traditional multi-view zone displays through vectorized angle control of the side-emitting LED light-emitting unit array, a universal LED light strip structure, and modular optical element design. The lamp board assembly of this embodiment not only ensures optical performance but also reduces weight and improves maintainability.

[0096] Compared with traditional multi-view display technology that relies on lens arrays to control the direction of light emission, the lamp panel assembly of this embodiment has significant advantages in terms of light field modulation method, structural design, imaging effect, energy efficiency, wide viewing angle performance and manufacturing feasibility.

[0097] Firstly, regarding the light field control mechanism, traditional multi-view zone displays typically achieve directional light emission by refracting pixel light through a lens array. This directionality is limited by the geometric and assembly precision of the lenses, easily leading to light energy loss and view zone crosstalk. In this embodiment, the lamp panel assembly employs a vectorized, side-emitting LED light-emitting unit array structure. Active light field vector control is achieved through the directional emission of LED light-emitting units 20 at multiple angles (i.e., different first preset tilt angles, such as 0°, 20°, 40°, 60°, or 80°; of course, the first preset tilt angle can also be other values). The light-emitting normal of each light-emitting element 212 is distributed along a second preset tilt angle, forming a multi-directional controllable light field, fundamentally improving light energy utilization and view zone separation.

[0098] Secondly, regarding innovation in LED light-emitting units, this embodiment introduces a three-color integrated side-emitting structure for the first time. Traditional side-emitting devices on the market are mostly monochrome packages or excessively bulky. In contrast, the second circuit board 211 in this embodiment uses a unique stamp-hole suspension structure (i.e., multiple connecting parts 2111) to encapsulate red, green, and blue light-emitting chips within the same light-emitting element 212. This design achieves multi-color side-emitting light in a very small space while ensuring optical center consistency. Since the LED light-emitting unit 20 is suspended via circuit board sidewall pads (i.e., multiple metal disks 111), the light-emitting direction of its light-emitting element 212 forms an angle with the plane of the first circuit board 10, allowing the light field to be precisely distributed to each viewing area. This structure not only expands the multi-view viewing range but also eliminates the problem of color fusion between multiple packages, representing a key breakthrough in achieving high-quality light field control.

[0099] Third, regarding display quality and wide viewing angle performance, the LED display module of this embodiment effectively solves the problems of field overlap and brightness attenuation that occur in traditional solutions under wide viewing angle conditions. By combining the three-color integrated side-emitting structure with the multi-angle side-emitting LED light-emitting unit array, the LED display module of this embodiment can maintain clear viewing area boundaries and uniform brightness within a wide viewing angle range of ±85°, significantly improving the naked-eye multi-viewing area display effect.

[0100] Fourth, in terms of structure and manufacturing process, the LED display module of this embodiment significantly reduces assembly and alignment difficulties through the collaborative design of a modular LED light strip structure (i.e., the first circuit board 10) and a molded optical barrier (i.e., multiple light guide separators 30). The first circuit board 10 is equipped with a fan-shaped metal disk, which is compatible with LED light-emitting units that emit light from the side at multiple angles, providing versatility and replaceability. The optical barrier is injection molded with high precision, and its internal toothed or rounded toothed structure (i.e., multiple protruding teeth) effectively controls the direction of light and reduces crosstalk in the viewing area. Through independent module assembly—that is, assembling the first circuit board 10, the optical barrier, and multiple LED light-emitting units 20—the maintenance and mass production efficiency of the LED display module of this embodiment is significantly improved.

[0101] Fifth, in terms of energy efficiency and cost control, the LED light-emitting unit 20 emits light directly in a directional manner, eliminating the need for lens arrays or complex optical films to adjust the light emission direction of the LED light-emitting unit. This significantly reduces light energy loss and improves overall energy efficiency. The simplified structure and reusable modular components (i.e., the first circuit board 10, multiple LED light-emitting units 20, and multiple light guide separators 30) also effectively reduce manufacturing costs and maintenance expenses, making large-scale applications more economical.

[0102] Finally, in terms of system expansion and application flexibility, the first circuit board 10 and multiple LED light-emitting units 20 in this embodiment can be flexibly configured with light-emitting angle, color ratio and light field distribution according to actual needs, and are suitable for various scenarios such as commercial display, vehicle display, professional visualization and new light field imaging.

[0103] The LED display module in this embodiment achieves high brightness, high contrast, low crosstalk, and wide viewing angle naked-eye multi-viewing zone display effect through a combination of innovative technologies such as a three-color integrated side-emitting structure, stamp hole suspension structure installation, fan-shaped metal disk 111 and multiple light guide separators 30. It has made systematic breakthroughs in light efficiency, structure, process and system integration, and has significant technological advancement and industrialization value.

[0104] In the description of this invention, it should be understood that "a plurality of" means two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing the invention 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 limiting the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0105] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0106] 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 should not be construed as limiting the scope of protection of this invention.

[0107] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An LED display module, comprising a base shell (100) and a lamp panel assembly disposed on the base shell (100), characterized in that, There are multiple lamp panel assemblies, which are spaced apart. Each lamp panel assembly includes: First circuit board (10); Multiple LED light-emitting units (20) are spaced apart along the length of the first circuit board (10). Each LED light-emitting unit (20) includes at least one LED light-emitting part (21). The light-emitting direction of each LED light-emitting part (21) is away from the bottom shell (100). Each LED light-emitting part (21) includes a second circuit board (211) and a light-emitting element (212) disposed on the second circuit board (211). The sidewall of the second circuit board (211) is connected to the first circuit board (10). The second circuit board (211) has a preset angle with the first circuit board (10). The light-emitting element (212) is disposed on the surface of the second circuit board (211). The light-emitting normal of the light-emitting element (212) is perpendicular to the second circuit board (211). The second circuit board (211) and the first circuit board (10) have a first preset tilt angle in their length directions. The light-emitting normal of the light-emitting element (212) and the first circuit board (10) have a second preset tilt angle in their length directions. The sum of the second preset tilt angle and the first preset tilt angle is 90°. In this embodiment, at least a portion of the second circuit board (211) of the LED light-emitting unit (20) of the LED light-emitting part (21) is inclined relative to the length direction of the first circuit board (10), so that the light-emitting direction of each light-emitting element (212) points to a different viewing area, thereby forming a multi-viewing area display.

2. The LED display module according to claim 1, characterized in that, The second circuit board (211) is arranged vertically between the first circuit board (10).

3. The LED display module according to claim 2, characterized in that, The first circuit board (10) has a plurality of mounting portions (11) on its surface. Each mounting portion (11) corresponds to a plurality of LED light-emitting portions (21). Each mounting portion (11) includes a plurality of metal disks (111). The second circuit board (211) has a plurality of connecting portions (2111) on the side connected to the first circuit board (10). Each connecting portion (2111) corresponds to a plurality of metal disks (111).

4. The LED display module according to claim 3, characterized in that, Each of the metal disks (111) is fan-shaped, and multiple metal disks (111) are coaxially arranged. The axis of the metal disks (111) is perpendicular to the first circuit board (10), and / or the connecting part (2111) is a metallized connecting hole that penetrates the second circuit board (211) along the thickness direction of the second circuit board (211).

5. The LED display module according to any one of claims 1 to 3, characterized in that, The first circuit board (10) has a plurality of grooves (12) spaced apart on one side near the light-emitting element (212) of the LED light-emitting part (21). The plurality of grooves (12) penetrate the first circuit board (10) along the thickness direction of the first circuit board (10), and each groove (12) is correspondingly provided with one LED light-emitting unit (20).

6. The LED display module according to any one of claims 1 to 3, characterized in that, The lamp panel assembly also includes a plurality of light guide separators (30), which are disposed on the first circuit board (10), and the plurality of light guide separators (30) are disposed in a one-to-one correspondence with the plurality of LED light-emitting parts (21).

7. The LED display module according to claim 6, characterized in that, The light guide separator (30) includes a light guide separator block (31), and a light-emitting groove (311) is provided on the light guide separator block (31). The light-emitting groove (311) includes a light-emitting channel (3111) and a receiving cavity (3112). The LED light-emitting part (21) is located in the receiving cavity (3112). The receiving cavity (3112) is located on the side of the light-emitting channel (3111) close to the second circuit board (211). The light-emitting channel (3111) extends along the light-emitting normal direction of the LED light-emitting part (21).

8. The LED display module according to claim 7, characterized in that, At least a portion of the structure of the light-emitting channel (3111) has a plurality of protruding teeth (31111) on its sidewall.

9. The LED display module according to claim 6, characterized in that, The light guide separator (30) includes a reflector (32), the surface of the reflector (32) near the light-emitting element (212) is an off-axis parabolic surface (321) to reflect the light from the LED light-emitting part (21) corresponding to the light guide separator (30), or the light guide separator (30) is a lens.

10. The LED display module according to claim 1, characterized in that, The bottom shell (100) includes a mounting circuit board (101), on which a plurality of connectors are provided, and the first circuit board (10) is connected to the connectors.

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