LED display module, LED display unit and LED display screen

Abstract

The utility model provides an LED display module, an LED display unit and an LED display screen. The LED display module comprises: a substrate; the light-emitting part is arranged on one side of the substrate, and the substrate is electrically connected with the light-emitting part; the packaging layer is arranged on one side of the substrate and surrounds the outer side of the light-emitting part; the pattern layer is arranged on the side, away from the substrate, of the packaging layer, and the pattern layer covers the surface, away from the substrate, of the light-emitting part; and the protective layer is arranged on one side, deviating from the substrate, of the pattern layer. According to the technical scheme, the problem that the LED display screen is difficult to fuse with the environment where the LED display screen is located when the LED display screen does not work 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, an LED display unit, and an LED display screen. Background Technology

[0002] An LED display screen comprises multiple LED display units arranged in a splicing configuration. Each LED display unit includes an LED display module and a housing located behind the LED display module. The LED display module includes a substrate and a light-emitting element located on the front side of the substrate.

[0003] When the LED display is not in operation, the light-emitting components do not emit light, allowing viewers to directly observe the substrate. In related technologies, the substrate surface is black. Because there is a significant difference between the front surface of the substrate and the surface of the light-emitting components and the environment where the LED display is located, the LED display, when not in operation, is difficult to blend into its surroundings. Utility Model Content

[0004] The main objective of this invention is to provide an LED display module, an LED display unit, and an LED display screen to solve the problem in related technologies where LED displays are difficult to integrate with their surroundings when not in operation.

[0005] To achieve the above objectives, according to one aspect of the present invention, an LED display module is provided, comprising: a substrate; a light-emitting element disposed on one side of the substrate, wherein the substrate and the light-emitting element are electrically connected; an encapsulation layer disposed on one side of the substrate and surrounding the outer side of the light-emitting element; a pattern layer disposed on the side of the encapsulation layer opposite to the substrate, and the pattern layer covering the surface of the light-emitting element opposite to the substrate; and a protective layer disposed on the side of the pattern layer opposite to the substrate.

[0006] Furthermore, the surface of the light-emitting element facing away from the substrate is located within the encapsulation layer.

[0007] Furthermore, the surface of the light-emitting element facing away from the substrate is the first surface, and the surface of the encapsulation layer facing away from the substrate is the second surface, with the first surface and the second surface arranged in parallel.

[0008] Furthermore, the pattern layer is either a sprayed layer or a printed layer.

[0009] Furthermore, a serial number area is provided on the substrate, and a serial number identifier is provided in the serial number area. The substrate includes a front surface on which a light-emitting element is provided, a rear surface opposite to the front surface, and a side surface connecting the front surface and the rear surface; the serial number area is provided on the rear surface, or the serial number area is provided on the side surface.

[0010] Furthermore, the light-emitting components include lamp beads or LED chips.

[0011] Furthermore, there are multiple light-emitting elements arranged in an array, and the distance between two adjacent light-emitting elements is A, where A ≤ 1.56 mm.

[0012] Furthermore, the surface of the light-emitting element facing away from the substrate is located within the encapsulation layer. The surface of the light-emitting element facing away from the substrate is the first surface, and the surface of the encapsulation layer facing away from the substrate is the second surface. The distance between the first surface and the second surface is L, where 0.01mm≤L≤0.5mm.

[0013] According to another aspect of the present invention, an LED display unit is provided, including an LED display module and a housing disposed on the rear side of the LED display module, wherein the LED display module is the aforementioned LED display module.

[0014] According to another aspect of the present invention, an LED display screen is provided, comprising a plurality of LED display units spliced ​​together, wherein the LED display units are the aforementioned LED display units.

[0015] The LED display module, utilizing the technical solution of this utility model, includes: a substrate, a light-emitting element, an encapsulation layer, a pattern layer, and a protective layer. The light-emitting element is disposed on one side of the substrate, and the substrate is electrically connected to the light-emitting element. The encapsulation layer is disposed on one side of the substrate and surrounds the outside of the light-emitting element. The pattern layer is disposed on the side of the encapsulation layer facing away from the substrate, and the pattern layer covers the surface of the light-emitting element facing away from the substrate. The protective layer is disposed on the side of the pattern layer facing away from the substrate. Thus, the encapsulation layer protects the light-emitting element, extending its lifespan. Furthermore, the encapsulation layer facilitates the processing of the pattern layer. The pattern layer covers one side of the substrate and the surface of the light-emitting element facing away from the substrate, allowing viewers to see the pattern layer when viewing the LED display screen when it is not in operation. Because the pattern layer blends well with the environment of the LED display screen, the LED display screen can better integrate with its surroundings when it is not in operation. Furthermore, the protective layer protects the pattern layer, improving its lifespan. Therefore, the technical solution of this application effectively solves the problem in related technologies where LED displays are difficult to integrate with their surroundings when not in operation. Attached Figure Description

[0016] 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:

[0017] Figure 1 A side perspective view of an embodiment of the LED display module according to the present invention is shown;

[0018] Figure 2 It shows Figure 1A magnified view of a portion of the LED display module at point A;

[0019] Figure 3 It shows Figure 1 A side view of the LED display module;

[0020] Figure 4 It shows Figure 1 A perspective view of an LED display module viewed from the front;

[0021] Figure 5 It shows Figure 1 Rear view of the LED display module.

[0022] The above figures include the following reference numerals:

[0023] 10. Substrate; 11. Serial number area;

[0024] 20. Light-emitting component; 21. First surface;

[0025] 30. Encapsulation layer; 31. Second surface;

[0026] 40. Pattern layer;

[0027] 50. Protective layer. Detailed Implementation

[0028] 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.

[0029] In this embodiment, the LED display module includes: a substrate 10, a light-emitting element 20, an encapsulation layer 30, a pattern layer 40, and a protective layer 50. The light-emitting element 20 is disposed on one side of the substrate 10, and the substrate 10 is electrically connected to the light-emitting element 20. The encapsulation layer 30 is disposed on one side of the substrate 10 and surrounds the outer side of the light-emitting element 20. The pattern layer 40 is disposed on the side of the encapsulation layer 30 facing away from the substrate 10, and the pattern layer 40 covers the surface of the light-emitting element 20 facing away from the substrate 10. The protective layer 50 is disposed on the side of the pattern layer 40 facing away from the substrate 10.

[0030] Thus, the encapsulation layer 30 protects the light-emitting element 20, extending its lifespan. Furthermore, the encapsulation layer 30 facilitates the processing of the pattern layer 40. The pattern layer 40 covers one side of the substrate 10 and the surface of the light-emitting element 20 facing away from the substrate 10, allowing viewers to see the pattern layer 40 even when the LED display is not in operation. Because the pattern layer 40 blends well with the environment of the LED display, the LED display can better integrate with its surroundings when not in operation. Moreover, the protective layer 50 protects the pattern layer 40, further improving its lifespan. Therefore, the technical solution of this application effectively solves the problem in related technologies where LED displays are difficult to integrate with their surroundings when not in operation.

[0031] In this embodiment, both the encapsulation layer 30 and the protective layer 50 are transparent layers.

[0032] like Figures 1 to 3 As shown, the surface of the light-emitting element 20 facing away from the substrate 10 is located within the encapsulation layer 30. This design can effectively protect the light-emitting element 20, prevent it from being exposed to the external environment, reduce the impact of dust, moisture, etc. on the light-emitting element 20, and extend the service life of the LED display module.

[0033] like Figures 1 to 3 As shown, the surface of the light-emitting element 20 facing away from the substrate 10 is the first surface 21, and the surface of the encapsulation layer 30 facing away from the substrate 10 is the second surface 31. The first surface 21 and the second surface 31 are arranged parallel to each other. The parallel arrangement of the first surface 21 and the second surface 31 ensures that the encapsulation layer 30 uniformly covers the light-emitting element 20 during the encapsulation process, improving the optical performance and reliability of the LED display module. In addition, the parallel design of the first surface 21 and the second surface 31 also facilitates the precise coating of the subsequent pattern layer 40 and the protective layer 50, ensuring the display effect and durability of the entire LED display module.

[0034] like Figures 1 to 3 As shown, pattern layer 40 is a sprayed coating layer. Using a sprayed coating layer to create pattern layer 40 allows for high-precision pattern design, meeting personalized customization needs for different display requirements. Furthermore, the use of spraying technology improves production efficiency, reduces costs, and makes mass production possible.

[0035] It should be noted that the pattern layer 40 is formed directly on the surface of the encapsulation layer 30 by spraying, resulting in a thinner pattern layer 40. This reduces the impact of the pattern layer 40 on the light-emitting element 20 when it covers the surface of the light-emitting element 20 away from the substrate 10, ensuring the light transmittance of the light-emitting element and the display effect of the screen. Compared to setting clearance holes on the pattern layer to avoid the light-emitting element, the LED display module in this embodiment is easier to process and reduces production costs.

[0036] In other embodiments, pattern layer 40 is a printing layer.

[0037] like Figure 5 As shown, a serial number area 11 is provided on the substrate 10, and a serial number identifier is provided within the serial number area 11. The substrate 10 includes a front surface on which the light-emitting element 20 is disposed, a rear surface opposite to the front surface, and a side surface connecting the front and rear surfaces. The serial number area 11 is located on the rear surface. Providing serial number identifiers on the substrate 10 facilitates the assembly and maintenance of the LED display modules. When splicing multiple LED display modules, the serial number identifiers enable quick identification and positioning of individual LED display modules, greatly improving splicing efficiency and accuracy, resulting in a better display effect after splicing the pattern layer 40 of multiple LED display modules. Furthermore, placing the serial number area 11 on the rear surface avoids interference with the display effect, facilitates observation, and also facilitates the placement of the light-emitting element 20 on the front surface of the substrate 10.

[0038] In other embodiments, the serial number region 11 is disposed on the side surface.

[0039] Furthermore, the light-emitting element 20 includes an LED chip. Using an LED chip as the light-emitting element 20 provides a display effect with high brightness, long lifespan, and high energy efficiency. The use of LED chips allows for smaller pixel pitch, improves display resolution, and is suitable for high-definition display requirements.

[0040] In other embodiments, the light-emitting element 20 includes an LED chip.

[0041] It should be noted that LED chips are encapsulated with encapsulating glue to obtain LED beads. The light-emitting component in this solution can be either an LED bead or an LED chip.

[0042] like Figures 1 to 4 As shown, there are multiple light-emitting elements 20 arranged in an array, with a distance A between any two adjacent light-emitting elements 20, where A ≤ 1.56 mm. By arranging multiple light-emitting elements 20 in an array and controlling the distance between adjacent light-emitting elements 20 within a small range, a finer display effect can be achieved, increasing the pixel density of the display module. This design is beneficial for improving the clarity and detail of the displayed image.

[0043] Preferably, A is 1.56mm, 1.3mm, 1.0mm, 0.7mm, 0.5mm, and 0.3mm. In this embodiment, A ≥ 0.3mm.

[0044] The inventors discovered that in related technologies, LED displays used for decoration typically have a mask on the front side of the substrate 10 to improve the integration of the LED display with its surroundings when not in operation. The mask has through-holes to avoid the LED beads. The surface of the mask is decorated with a pattern that matches the environment of the LED display. However, this method of using a mask is only suitable for cases where the spacing between the light-emitting elements 20 is relatively large. When the spacing between the light-emitting elements 20 is small, the mask is difficult to manufacture. The technical solution of this embodiment is applicable to both cases where the spacing between the light-emitting elements 20 is small and large, improving the integration and harmony of the LED display with its surroundings when not in operation, increasing its artistic appeal, and meeting the usage needs of different environments.

[0045] like Figure 1 and Figure 2 As shown, the surface of the light-emitting element 20 facing away from the substrate 10 is located within the encapsulation layer 30. This surface is designated as the first surface 21, and the surface of the encapsulation layer 30 facing away from the substrate 10 is designated as the second surface 31. The distance between the first surface 21 and the second surface 31 is L, where 0.01mm ≤ L ≤ 0.5mm. This arrangement helps optimize the thickness of the encapsulation layer 30, ensuring effective protection of the light-emitting element 20 without excessively increasing the thickness of the display module, thus reducing the impact on its thinner design. A suitable value for L also allows for appropriate refraction and scattering of light within the encapsulation layer 30, improving the display effect.

[0046] Preferably, L is 0.01mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm and 0.5mm.

[0047] This application also provides an LED display unit, which includes an LED display module and a housing disposed behind the LED display module. The LED display module is the aforementioned LED display module. Since the aforementioned LED display module can solve the problem in related technologies where an LED display screen is difficult to integrate with its surrounding environment when not in operation, the LED display unit with this LED display module can solve the same technical problem.

[0048] This application also provides an LED display screen, which includes multiple LED display units arranged in a spliced ​​configuration, wherein the LED display units are those described above. Since the aforementioned LED display units can solve the problem in related technologies where LED displays are difficult to integrate with their surroundings when not in operation, LED displays with these LED display units can solve the same technical problem.

[0049] In this embodiment, the planar surface of the encapsulation layer 30 is painted to form a pattern layer 40, and the painted pattern matches the usage environment. During the painting operation, the pattern is divided into several sections, which are painted onto the substrates 10 of different LED display modules respectively, and numbered according to the image splicing order, with serial number markings processed on the substrates 10. After the pattern layer 40 has cured, a protective layer 50 is processed on the surface of the pattern layer 40 to achieve waterproof and oil-proof functions. Finally, multiple LED display modules are spliced ​​according to the serial number markings to obtain an LED display screen that can adapt to its environment even when not in operation.

[0050] The technical solution of this embodiment is applicable to GOB modules, COB modules, and MIP modules. For SMD products, a GOB potting operation is first performed on the module. After the GOB potting operation, a smooth planar encapsulation layer 30 is obtained, which has a smaller impact on the brightness of the LED display and facilitates the setting of the pattern layer 40. For COB modules, the final black coating or film application process in the COB module manufacturing process is eliminated. Instead, a colored painting is sprayed onto the surface of the transparent adhesive layer to form the pattern layer 40. The sprayed pattern layer 40 is compatible with the usage environment.

[0051] In this embodiment, the protective layer 50 is a hydrophobic and oleophobic layer. The protective layer 50 is formed by at least one of spraying and chemical vapor deposition methods. The protective layer 50 is made of at least one of polymeric materials, organic materials, or inorganic materials. Polymeric materials include perfluoropolyethers, hyperbranched polyesters, and polydimethylsiloxane. Inorganic materials include nano-silica. Organic materials include cellulose-based materials and fluorinated polyacrylate latex films.

[0052] Among them, perfluoropolyether is a high molecular weight polymer whose main chain consists of repeating COC ether bonds, and the hydrogen atoms in the main chain are completely replaced by fluorine atoms. Hyperbranched polyester is a high molecular weight material with a highly branched structure, belonging to the category of hyperbranched polymers. It forms a complex three-dimensional topological structure through special synthesis methods, exhibiting good solubility and chemical reactivity. Polydimethylsiloxane is a typical high molecular weight material, belonging to organosilicon polymers. Its molecular structure consists of a silicon-oxygen bond main chain and methyl groups, exhibiting good flexibility, hydrophobicity, and chemical stability. Cellulose, after hydrophobic and oleophobic modification, can be used as a material for hydrophobic and oleophobic layers. For example, cellulose nanofibers and cellulose sponges treated by chemical modification or physical methods can achieve hydrophobic and oleophobic properties. Fluorinated polyacrylate latex film is a common hydrophobic and oleophobic material. By introducing fluorine atoms into polyacrylate, the surface energy can be significantly reduced, achieving good hydrophobic and oleophobic effects.

[0053] 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.

[0054] 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.

[0055] 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: base(10); A light-emitting element (20) is disposed on one side of the substrate (10), and the substrate (10) is electrically connected to the light-emitting element (20); An encapsulation layer (30) is disposed on one side of the substrate (10) and surrounds the outside of the light-emitting element (20); A pattern layer (40) is disposed on the side of the encapsulation layer (30) away from the substrate (10), and the pattern layer (40) covers the surface of the light-emitting element (20) away from the substrate (10); A protective layer (50) is disposed on the side of the patterned layer (40) facing away from the substrate (10); The surface of the light-emitting element (20) facing away from the substrate (10) is located within the encapsulation layer (30). The surface of the light-emitting element (20) facing away from the substrate (10) is the first surface (21), and the surface of the encapsulation layer (30) facing away from the substrate (10) is the second surface (31). The distance between the first surface (21) and the second surface (31) is L, where 0.01mm≤L≤0.5mm.

2. The LED display module according to claim 1, characterized in that, The surface of the light-emitting element (20) facing away from the substrate (10) is the first surface (21), and the surface of the encapsulation layer (30) facing away from the substrate (10) is the second surface (31). The first surface (21) and the second surface (31) are arranged in parallel.

3. The LED display module according to claim 1, characterized in that, The pattern layer (40) is a sprayed layer or a printed layer.

4. The LED display module according to claim 1, characterized in that, The substrate (10) is provided with a serial number area (11), and a serial number identifier is provided in the serial number area (11). The substrate (10) includes a front surface on which the light-emitting element (20) is provided, a rear surface opposite to the front surface, and a side surface connecting the front surface and the rear surface. The serial number area (11) is disposed on the rear surface, or the serial number area (11) is disposed on the side surface.

5. The LED display module according to claim 1, characterized in that, The light-emitting element (20) includes lamp beads or LED chips.

6. The LED display module according to claim 1, characterized in that, There are multiple light-emitting elements (20), and the multiple light-emitting elements (20) are arranged in an array. The distance between two adjacent light-emitting elements (20) is A, where A≤1.56mm.

7. An LED display unit, comprising an LED display module and a housing disposed on the rear side of the LED display module, characterized in that, The LED display module is the LED display module according to any one of claims 1 to 6.

8. An LED display screen, comprising multiple LED display units spliced ​​together, characterized in that, The LED display unit is the LED display unit as described in claim 7.

Images