LED display structure

Abstract

The invention discloses an LED display structure, and relates to the technical field of LED display, the LED display structure comprises a control panel, the control panel is sequentially connected with positioning foam and surface layer film paper in a stacked manner, the positioning foam is internally provided with a positioning hole, the positioning hole is internally provided with a diffusion plate used for being in touch induction with the control panel, and the control panel is electrically connected with an LED chip located in the positioning hole; wherein the LED chip and the diffusion plate are arranged in a spaced mode and located on one side of the diffusion plate, and the diffusion plate is used for diffusing and guiding light rays emitted by the LED chip; the surface layer film paper is provided with display patterns used for displaying function partitions, and the surface layer film paper is connected with the control panel in an open circuit mode. The problem that an LED display structure in the prior art is insufficient in circuit reliability is solved.

Description

Technical Field

[0001] This invention relates to the field of LED display technology, and more particularly to an LED display structure. Background Technology

[0002] In recent years, LED display technology has been widely used in commercial advertising, indoor and outdoor large screens, stage backdrops, and other fields due to its advantages such as high brightness, long lifespan, and strong color performance. As market demands for display quality and ease of installation continue to increase, ultra-thin, highly integrated LED display structures have become an important direction for technological development.

[0003] In existing technologies, traditional LED display structures typically employ a multi-layered composite structure, including a substrate carrying the LED chips, a circuit layer responsible for electrical connections, and a surface film for optical diffusion and protection. Touch functionality is achieved by coating the film surface with conductive silver paste to form simple circuits. However, traditional circuit layers and the film rely on adhesives or physical bonding for connection. Under long-term thermal stress, changes in environmental temperature and humidity, or bending conditions, problems such as interface separation, circuit breakage, or unstable signal transmission can easily occur, affecting display uniformity and lifespan.

[0004] Therefore, existing LED display structures suffer from insufficient circuit reliability. Summary of the Invention

[0005] The purpose of this invention is to provide an LED display structure that solves the problem of insufficient circuit reliability in existing LED display structures.

[0006] To achieve this objective, the present invention adopts the following technical solution: An LED display structure includes a control board, wherein positioning foam and surface film are sequentially stacked on the control board, positioning holes are provided in the positioning foam, and a diffuser plate for touch sensing of the control board is provided in the positioning holes, and an LED chip located in the positioning holes is electrically connected to the control board. The LED chip is spaced apart from the diffuser plate and located on one side of the diffuser plate. The diffuser plate is used to diffuse and guide the light emitted by the LED chip. The surface film paper is provided with display patterns for displaying functional areas. The surface film paper is disconnected from the control board.

[0007] Optionally, the positioning foam is made of EVA material, and the positioning foam is bonded and fixed to the control board, and the surface film paper is bonded and fixed to the positioning foam.

[0008] Optionally, the thickness of the positioning foam is greater than the thickness of the diffuser plate, and the lengths of the control plate, the positioning foam, and the surface film correspond one-to-one, as do the widths of the control plate, the positioning foam, and the surface film.

[0009] Optionally, the control board is electrically connected to a plurality of first LED chips for digital display in the middle, the positioning foam is provided with first positioning holes corresponding to the first LED chips, the plurality of first LED chips are arranged to form two figure-eight structures side by side, and the surface film is provided with a first pattern corresponding to the figure-eight structure.

[0010] Optionally, the control board is electrically connected to a plurality of second LED chips arranged adjacent to the first LED chip, the positioning foam is provided with a second positioning hole corresponding to the second LED chip, and the surface film is provided with a second pattern corresponding to the second LED chip.

[0011] Optionally, the control board is electrically connected to a plurality of third LED chips, the positioning foam is provided with a third positioning hole corresponding to the third LED chip, a first diffusion plate is provided in the third positioning hole, the third LED chip in each third positioning hole is located on one side of the first diffusion plate, and a third pattern corresponding to the third LED chip is provided on the surface film paper.

[0012] Optionally, the control board is electrically connected to a plurality of fourth LED chips, the positioning foam is provided with a fourth positioning hole corresponding to the fourth LED chip, a second diffusion plate is provided in the fourth positioning hole, the fourth LED chip in each fourth positioning hole is located on one side of the second diffusion plate, and the surface film paper is provided with a fourth pattern corresponding to the fourth LED chip.

[0013] Optionally, the control board has an output connector, an input connector, and a buzzer electrically connected to the side facing away from the positioning foam.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention provides an LED display structure in which an independently arranged diffuser plate and LED chips are spaced apart to achieve light diffusion and guidance. This effectively mixes and homogenizes the point light source emitted by the LED chips, reducing light spots and improving the softness and uniformity of the displayed image. This results in clearer and more delicate display patterns on the surface film, leading to a better visual experience. Positioning foam and its positioning holes provide a precise mounting and positioning reference for the diffuser plate and LED chips, ensuring the accuracy of the relative positions between optical and light-emitting elements. This modular, layered structure simplifies the assembly process, reduces assembly difficulty, and facilitates subsequent local maintenance or component replacement. The surface film only carries the display pattern, eliminating the need for fragile conductive lines on its surface for touch control. The touch sensing function is achieved through the embedded diffuser plate and control board. This design separates the sensitive sensing structure from the external display and protective layers, ensuring the reliability of the touch function while avoiding any impact on the integrity and aesthetics of the film surface. Because it eliminates the need for coating the surface layer with precision conductive silver paste or performing complex lamination processes, the processing steps for the surface layer are simplified, reducing the requirements for materials and processes. This helps control overall manufacturing costs and improve production yield. Therefore, this invention solves the problem of insufficient circuit reliability in existing LED display structures. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0017] Figure 1 This is a three-dimensional structural diagram of an LED display structure provided in an embodiment of the present invention; Figure 2 This is a first partial structural diagram of an LED display structure provided in an embodiment of the present invention; Figure 3 This is an exploded structural diagram of an LED display structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of a second partial structure of an LED display structure provided in an embodiment of the present invention; Figure 5 This is a third partial structural diagram of an LED display structure provided in an embodiment of the present invention.

[0018] Illustration: 10. Control board; 11. First LED chip; 12. Second LED chip; 13. Third LED chip; 14. Fourth LED chip; 20. Positioning foam; 21. First positioning hole; 22. Second positioning hole; 23. Third positioning hole; 24. Fourth positioning hole; 30. Surface film paper; 40. First diffuser plate; 50. Second diffuser plate; 60. Output connector; 70. Input connector; 80. Buzzer. Detailed Implementation

[0019] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0020] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] This invention provides an LED display structure, such as... Figures 1 to 5 As shown, it includes a control board 10, on which positioning foam 20 and surface film paper 30 are stacked in sequence. Positioning foam 20 has positioning holes, and a diffuser plate for touch sensing with control board 10 is provided in the positioning holes. LED chip located in the positioning holes is electrically connected to control board 10. In this embodiment, the LED chip is spaced apart from the diffuser plate and located on one side of the diffuser plate. The diffuser plate is used to diffuse and guide the light emitted by the LED chip. The surface film 30 has display patterns for displaying functional zones, and the surface film 30 is disconnected from the control board 10. In this embodiment, the control board 10 has a circuit layer, and a film that is bonded and fixed to the diffuser plate is installed on the positioning foam 20. By pressing the diffuser plate, the diffuser plate and the control board 10 achieve touch sensing, thereby realizing the corresponding control function.

[0023] It should be noted that the LED display structure provided by this invention features an independently arranged diffuser plate and LED chips, which are used to diffuse and guide light. This effectively mixes and homogenizes the point light source emitted by the LED chips, thereby reducing light spots and improving the softness and uniformity of the displayed image. This results in clearer and more delicate display pattern partitioning on the surface film 30, leading to a better visual experience. The positioning foam 20 and its positioning holes provide a precise installation and positioning reference for the diffuser plate and LED chips, ensuring the accuracy of the relative positions between the optical and light-emitting elements. This modular, layered structural design simplifies the assembly process, reduces assembly difficulty, and facilitates subsequent local maintenance or component replacement. The surface film 30 only carries the display pattern, eliminating the need for fragile conductive lines on its surface for touch control. The touch sensing function is achieved by the embedded diffuser plate and control board 10 working together. This design separates the sensitive sensing structure from the external display and protective layers, ensuring the reliability of the touch function while avoiding any impact on the integrity and aesthetics of the film surface. Since there is no need to coat the surface film paper 30 with precision conductive silver paste lines or perform complex lamination processes, the processing steps of the surface film paper 30 are simplified, the requirements for materials and processes are reduced, thereby helping to control the overall manufacturing cost and improve the production yield. Therefore, this invention solves the problem of insufficient circuit reliability in existing LED display structures.

[0024] like Figure 3 As shown, the positioning foam 20 is made of EVA material. The positioning foam 20 is bonded and fixed to the control board 10, and the surface film paper 30 is bonded and fixed to the positioning foam 20.

[0025] In practical implementation, EVA material possesses excellent elasticity, flexibility, and cushioning properties. By bonding the control board 10 (rigid) and the surface film 30 (flexible) to its upper and lower surfaces respectively, a rigid-flexible-flexible composite laminate structure is formed. This structure effectively absorbs, disperses, and buffers internal stresses generated by changes in ambient temperature, heat generated during equipment operation, or external bending and vibration. It prevents interface peeling, warping, or circuit breakage caused by differences in thermal expansion coefficients between different materials, thereby significantly enhancing the structural integrity and long-term reliability of the display screen under complex operating conditions. Adhesive bonding replaces traditional physical pressing or simple lamination, creating a continuous, tight, and strong interface bond between the control board 10 and the foam, and between the foam and the surface film 30. This bonding method eliminates potential air gaps or looseness between layers, avoiding electrical signal interference or transmission instability caused by poor contact, and providing a stable transmission environment for potentially involved sensing signals (such as touch). EVA material itself has good electrical insulation properties. As an intermediate adhesive layer, it physically isolates the control board 10 with circuits and components from the outer surface film 30, providing an additional electrical safety barrier, preventing potential short circuit risks, and improving the safety of product use.

[0026] like Figures 1 to 3 As shown, the thickness of the positioning foam 20 is greater than the thickness of the diffuser plate. The lengths of the control plate 10, the positioning foam 20, and the surface film 30 correspond one-to-one. The widths of the control plate 10, the positioning foam 20, and the surface film 30 also correspond one-to-one.

[0027] In practice, the control board 10, positioning foam 20, and surface film 30 maintain a strict dimensional match in length and width, forming a precise external contour reference. This ensures that after the three-layer structure is bonded and assembled, the edges are perfectly aligned, forming a neat and misaligned "sandwich" module. This design not only enhances the product's aesthetics and professionalism, but also, because the thickness of the positioning foam 20 is greater than the thickness of the diffuser plate it houses, this dimensional difference actively creates and ensures a buffer cavity surrounding the diffuser plate. This cavity firstly provides the necessary and protected optical working distance between the LED chip and the diffuser plate, allowing the light to diffuse and mix sufficiently. like Figures 2 to 5 As shown, the control board 10 is electrically connected to a plurality of first LED chips 11 for digital display in the middle. The positioning foam 20 is provided with first positioning holes 21 corresponding to the first LED chips 11. The plurality of first LED chips 11 surround to form two figure-eight structures arranged side by side. The surface film paper 30 is provided with a first pattern corresponding to the figure-eight structure.

[0028] In practical implementation, multiple first LED chips 11 required to form a single digit (figure-eight shape) are integrated and arranged in the same area of ​​the control board 10, forming a complete outline of the displayed character. This design integrates multiple segment LEDs that are traditionally scattered and require independent driving into a modular display unit that can be uniformly addressed and driven by the control board 10. This simplifies the wiring and control logic of the digital display drive circuit. The control board 10 only needs to send a unified display signal to each "figure-eight" unit, instead of controlling dozens of independent segments, reducing the complexity and power consumption of the control system and improving the response speed and reliability.

[0029] like Figures 2 to 5 As shown, the control board 10 is electrically connected to a plurality of second LED chips 12 arranged adjacent to the first LED chip 11. The positioning foam 20 is provided with second positioning holes 22 corresponding to the second LED chips 12, and the surface film paper 30 is provided with a second pattern corresponding to the second LED chips 12.

[0030] In practical implementation, two sets of functionally independent LED chips are arranged adjacently on the control board 10 (the first LED chip 11 is used for core digital display, and the second LED chip 12 is used for other indicators or decorations). Optical isolation and positioning are achieved through independent second positioning holes 22 on the positioning foam 20, ultimately mapping an independent second pattern (such as status indicator lights, unit symbols, brand logos, or decorative graphics) onto the surface film 30. This allows a single display module to simultaneously and independently convey two or more different visual information within a single physical structure. For example, while displaying numbers, the second LED chip 12 can illuminate corresponding unit symbols such as "℃" or "%", or status icons such as battery level. This design achieves a high degree of functional integration and efficient space utilization, avoiding the complexity of adding independent modules for additional functions.

[0031] like Figures 1 to 5 As shown, the control board 10 is electrically connected to multiple third LED chips 13. The positioning foam 20 is provided with third positioning holes 23 corresponding to the third LED chips 13. A first diffusion plate 40 is provided in the third positioning hole 23. The third LED chip 13 in each third positioning hole 23 is located on one side of the first diffusion plate 40. The surface film paper 30 is provided with a third pattern corresponding to the third LED chip 13.

[0032] In practice, the optical design for the third pattern (which may be an indicator light, special symbol, or color display area) can be completely decoupled from and independently optimized from the main digital display area (first pattern). For example, if the third LED chip 13 is a color LED or requires a different light emission angle, a diffuser plate that matches its characteristics can be specially selected, reducing the actual number of third LED chips 13 required to achieve the best light mixing effect, color saturation, or viewing angle, ensuring that each functional area obtains the best display quality tailored to it.

[0033] like Figures 2 to 5 As shown, the control board 10 is electrically connected to multiple fourth LED chips 14. The positioning foam 20 is provided with fourth positioning holes 24 corresponding to the fourth LED chips 14. A second diffusion plate 50 is provided in the fourth positioning hole 24. The fourth LED chip 14 in each fourth positioning hole 24 is located on one side of the second diffusion plate 50. The surface film paper 30 is provided with a fourth pattern corresponding to the fourth LED chip 14.

[0034] In practical implementation, an independent second diffuser plate 50, which can be different in size from the first diffuser plate 40, is used to customize the display requirements of the fourth pattern (such as specific colors, ultra-high brightness, and special viewing angles). This design allows multiple top-level, potentially contradictory optical effects to be achieved simultaneously within a single display screen. For example, the main digital display area (first unit) can pursue high uniformity and softness, while the fourth area, as a warning light, can pursue high penetration and specific directionality. The optical performance of each area is uncompromising, achieving its own optimal state, realizing the integration and coexistence of heterogeneous optical performance. Each newly added independent optical cavity (fourth positioning hole 24) establishes a dedicated physically isolated optical path for its internal LED light source, strictly preventing lateral light leakage. Even in scenarios with extremely complex, dynamic, and multi-colored display content (such as multiple areas flashing simultaneously with different colors and frequencies), crosstalk between areas can be completely eliminated. This ensures that each visual signal (fourth pattern) is extremely pure and accurate, without interfering with or being interfered with by other areas, thus maintaining clear, orderly, and professional visual information transmission within a limited space.

[0035] like Figure 1 As shown, the control board 10 has an output connector 60, an input connector 70, and a buzzer 80 electrically connected to the side facing away from the positioning foam 20.

[0036] In practical implementation, all electrical interfaces (input and output connectors 60) and acoustic devices (buzzer 80) are centrally located on the back of the control board 10 (i.e., the side facing away from the display surface), keeping the front and side appearance of the product clean and complete, with no exposed cables or interfaces, significantly improving the aesthetic design and integration of the terminal product. Simultaneously, this layout protects vulnerable interfaces and devices internally or on the back of the structure, reducing the risk of damage due to accidental contact, plugging / unplugging, or dust accumulation, thus enhancing overall reliability. By integrating the buzzer 80 with the control board 10 and directly driving it, the display structure possesses independent audio prompts and alarm functions; it can work in conjunction with the LED display content to achieve synchronized audio-visual interaction (such as providing sound feedback during touch sensing); more importantly, it can be used to issue system status prompts (such as startup, standby, fault alarms, etc.), providing users or maintenance personnel with another status monitoring channel besides vision, improving the product's interactivity and maintainability.

[0037] In the specific implementation process, the LED display structure provided in this embodiment is applied to the washing machine scenario. The first pattern of the surface film paper 30 is a digital pattern, the second pattern is a timer or wireless signal pattern, the third pattern is a text pattern such as washing, rinsing, dehydration, ordinary laundry detergent, concentrated laundry detergent, water level, essence wash or ultraviolet light, and the fourth pattern is a text pattern such as smart wash, quick wash, stubborn stain wash, gentle, soak wash, antibacterial mite, home textiles, down, silk, shirt, drum self-cleaning or cloud program.

[0038] Working Principle: The LED display structure provided by this invention features an independently arranged diffuser plate and LED chips, which diffuse and guide light. This effectively mixes and homogenizes the point light emitted by the LED chips, reducing light spots and improving the softness and uniformity of the displayed image. This results in clearer and more delicate display patterns on the surface film 30, leading to a better visual experience. The positioning foam 20 and its positioning holes provide a precise mounting and positioning reference for the diffuser plate and LED chips, ensuring the accuracy of the relative positions between the optical and light-emitting elements. This modular, layered structure simplifies the assembly process, reduces assembly difficulty, and facilitates subsequent local maintenance or component replacement. The surface film 30 only carries the display pattern; there is no need to create easily damaged conductive lines on its surface for touch control. The touch sensing function is achieved by the embedded diffuser plate and control board 10. This design separates the sensitive sensing structure from the external display and protective layers, ensuring the reliability of the touch function while avoiding any impact on the integrity and aesthetics of the film surface. Since there is no need to coat the surface film paper 30 with precision conductive silver paste lines or perform complex lamination processes, the processing steps of the surface film paper 30 are simplified, the requirements for materials and processes are reduced, thereby helping to control the overall manufacturing cost and improve the production yield. Therefore, this invention solves the problem of insufficient circuit reliability in existing LED display structures.

[0039] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An LED display structure, characterized in that, Includes a control board (10), wherein the control board (10) is sequentially stacked with positioning foam (20) and surface film paper (30), the positioning foam (20) is provided with positioning holes, the positioning holes are provided with diffusion plates for touch sensing with the control board (10), and the control board (10) is electrically connected to an LED chip located in the positioning holes; The LED chip is spaced apart from the diffuser plate and located on one side of the diffuser plate. The diffuser plate is used to diffuse and guide the light emitted by the LED chip. The surface film (30) is provided with display patterns for displaying functional areas. The surface film (30) is disconnected from the control board (10).

2. The LED display structure according to claim 1, characterized in that, The positioning foam (20) is made of EVA material. The positioning foam (20) is bonded and fixed to the control board (10). The surface film paper (30) is bonded and fixed to the positioning foam (20).

3. The LED display structure according to claim 1, characterized in that, The thickness of the positioning foam (20) is greater than the thickness of the diffusion plate. The lengths of the control plate (10), the positioning foam (20), and the surface film (30) are all in one-to-one correspondence. The widths of the control plate (10), the positioning foam (20), and the surface film (30) are all in one-to-one correspondence.

4. The LED display structure according to any one of claims 1 to 3, characterized in that, The control board (10) is electrically connected to a plurality of first LED chips (11) for digital display in the middle. The positioning foam (20) is provided with a first positioning hole (21) corresponding to the first LED chip (11). The plurality of first LED chips (11) are arranged to form two figure-eight structures arranged side by side. The surface film paper (30) is provided with a first pattern corresponding to the figure-eight structure.

5. The LED display structure according to claim 4, characterized in that, The control board (10) is electrically connected to a plurality of second LED chips (12) arranged adjacent to the first LED chip (11). The positioning foam (20) is provided with a second positioning hole (22) corresponding to the second LED chip (12). The surface film paper (30) is provided with a second pattern corresponding to the second LED chip (12).

6. The LED display structure according to claim 5, characterized in that, The control board (10) is electrically connected to a plurality of third LED chips (13). The positioning foam (20) is provided with a third positioning hole (23) corresponding to the third LED chip (13). A first diffusion plate (40) is provided in the third positioning hole (23). The third LED chip (13) in each third positioning hole (23) is located on one side of the first diffusion plate (40). The surface film paper (30) is provided with a third pattern corresponding to the third LED chip (13).

7. The LED display structure according to claim 6, characterized in that, The control board (10) is electrically connected to a plurality of fourth LED chips (14). The positioning foam (20) is provided with a fourth positioning hole (24) corresponding to the fourth LED chip (14). A second diffusion plate (50) is provided in the fourth positioning hole (24). The fourth LED chip (14) in each fourth positioning hole (24) is located on one side of the second diffusion plate (50). The surface film paper (30) is provided with a fourth pattern corresponding to the fourth LED chip (14).

8. The LED display structure according to claim 1, characterized in that, The control board (10) has an output connector (60), an input connector (70), and a buzzer (80) electrically connected to the side facing away from the positioning foam (20).

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