LED dome display device and light emitting tube arrangement method
By optimizing the arrangement of LED tubes in LED dome screens, adopting a vertical line arrangement and transition buffer design, the color difference problem at the curved splicing point of LED dome screens was solved, achieving an immersive display without obvious visual boundaries, thus improving display quality and viewing experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NANJING LOPU CO LTD
- Filing Date
- 2026-06-05
- Publication Date
- 2026-07-31
AI Technical Summary
LED dome display devices are prone to bright edges, dark edges, and color edges at curved splicing points, resulting in obvious visual demarcation lines and affecting the immersive viewing experience.
By optimizing the arrangement of LED chips, a vertical straight-line arrangement is adopted with a transition buffer zone set in the middle of the dome. Mirroring and row-by-row rotation are performed to weaken color differences and color shifts at the splicing points, ensuring that the chip arrangement in areas A, B, and C is consistent.
It significantly improves the uniformity and continuity of LED dome screens, eliminates obvious visual boundaries, enhances the immersive display effect, and reduces system debugging complexity and maintenance costs.
Smart Images
Figure CN122493745A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of LED display technology, and more specifically, to an LED dome-type display device and a method for arranging light-emitting diodes. Specifically, it relates to the arrangement structure of light-emitting diode chips in LED dome displays, LED dome-type displays, capsule-shaped irregular LED displays, etc., and a method for weakening the visual dividing line at the splicing point. It is mainly applied to irregular splicing and curved convergent LED immersive displays. Background Technology
[0002] Irregularly shaped displays are display screens with special shapes and structures, distinct from flat, conventional displays and inwardly curved displays (similar to curved screens). Common shapes include spheres, triangles, and bottle shapes. Figure 1 The display screen shown resembles a horizontally cut capsule shape, belonging to the category of irregularly shaped LED displays, and can also be commonly referred to as a capsule screen. When this capsule screen is used for dome displays, because its curved shape is not a perfect sphere in the strict sense, it is also called an LED dome screen.
[0003] As a carrier of immersive visual displays, LED dome screens, with their advantages of ultra-wide viewing angles and high contrast, have been widely used in science and technology museums, planetariums, dome theaters, theme parks, and large convention centers. These displays use multiple LED display modules spliced together to form an arc or spherical curved surface structure, providing viewers with a 360° or 180° panoramic visual experience, achieving seamless image extension and immersive presentation.
[0004] In special application scenarios involving large sizes and curved surface splicing, maintaining the overall consistency of dome-shaped display systems still faces significant challenges. Figure 1 Taking the capsule screen as an example, this type of LED dome screen is spliced together from multiple independent LED display modules. When the capsule screen extends to both ends, the modules cannot adopt a conventional rectangular structure. They need to narrow inwards with the shape and gradually transition from a rectangle to a fan shape and then a trapezoid. Affected by the change in the light emission angle of the LED beads, the inward convergence and narrowing position, especially the splicing edge area at this position, will show bright edges, dark edges, and color edges. This not only destroys the integrity and continuity of the picture, but also easily forms a visually visible "splitting line". This "splitting line" is not a physical gap, but is only visually obvious, which greatly weakens the immersive viewing experience.
[0005] From a technical perspective, the core reason for the aforementioned problems lies in the difference in the arrangement of LED chips at the joints of the dome-shaped curved surface structure. This difference in arrangement causes color distortion due to changes in viewing angle. LED chips are planar light emitters, containing red, green, and blue LED chips, typically arranged in a straight line. Although the external epoxy resin can mix the three primary color chips, the mixing is not absolutely uniform, and color distortion will still occur at different viewing angles. In other words, the curved surface structure itself does not directly cause color difference, but the existing straight-line arrangement of LED chips cannot meet the 360° viewing angle of the curved surface, thus creating a visual dividing line.
[0006] Combination Figure 1 To achieve the best viewing experience, the LED chips in the hemispherical area of the capsule screen (corresponding to areas A and C) are typically arranged vertically (mainly in a straight line in the order of red, green, and blue) to ensure white balance and horizontal viewing angle. For area B, which converges in the center of the capsule screen, there are two main existing methods for arranging the LED chips: Conventional Method 1: Combining Figure 2 In region B, the LED chips are arranged vertically in a fixed red, green, and blue sequence. After crossing the central axis of region B, the chip arrangement direction is significantly opposite to that of regions A and C, creating two distinct color difference boundary lines at the junction of region B and regions A and C (see [link]). Figure 4 This causes the image to be fragmented, severely affecting the viewing experience.
[0007] Conventional Method Two: Combination Figure 3 In region B, all the LED chips are arranged horizontally. This method provides good viewing within region B, but it creates a noticeable color difference boundary at the junction of region B and regions A and C (see [link]). Figure 5 ). Summary of the Invention
[0008] 1. The technical problem that the invention aims to solve In view of the shortcomings of the existing technology, the present invention provides an LED dome-like display device and a method for arranging light-emitting diodes. By optimizing the arrangement of light-emitting diode chips in the LED dome-like screen, the present invention weakens the color difference and color deviation at the splicing points of the areas from a structural perspective, significantly improving the overall uniformity and continuity of the LED dome-like screen display. It can achieve an immersive display effect with no obvious visual dividing lines, no central bright lines, and uniform color on both sides, allowing the immersive advantages of dome-like screens (especially capsule screens) to be fully utilized. It can effectively replace existing low-cost irregular-shaped display solutions such as CAVE spaces, and greatly improve the display quality and visual experience of LED irregular-shaped dome / dome-like screens.
[0009] 2. Technical Solution To achieve the above objectives, the technical solution provided by the present invention is as follows: The present invention discloses an LED dome display device, comprising region A, region B and region C, with region A and region C respectively arranged on both sides of region B; LED beads with tri-color light-emitting diode chips are evenly distributed on regions A, region C and region B; the light-emitting diode chips in regions A and region C are arranged in a vertical line; the light-emitting diode chips in region B are also arranged in a vertical line, and the arrangement of the light-emitting diode chips in region B is mirrored after crossing the central axis of its dome.
[0010] Furthermore, after mirroring, the arrangement order of the LED chips on both sides of the central axis of region B is consistent with the arrangement order of the LED chips in regions A and C, respectively.
[0011] Furthermore, regions A and C are spherical or near-spherical structures, and region B is a curved surface structure unfolded into a rectangle; when regions A and C extend from the end away from region B to the end closer to region B, the display module gradually changes from a trapezoidal shape to a fan shape along the curved surface contour, forming an pole at the end closer to region B and an equator on the other side.
[0012] Furthermore, the light-emitting diode dies in regions A and C extend from the equator towards the poles and eventually converge at the poles.
[0013] Furthermore, a transition buffer zone is set at the center of the dome in region B. The light-emitting diode cores inside the transition buffer zone are arranged in a row by row according to a set angle, so that the connection position between the transition buffer zone and the adjacent non-buffer zone and the arrangement order of the light-emitting diode cores are kept uniform.
[0014] Furthermore, the transition buffer zone is laid out with the central axis of region B as the reference. The transition buffer zone extends symmetrically to the left and right along the central axis, or is laid out in an asymmetrical manner. The outline of the transition buffer zone is flexibly set in combination with the curvature of the dome-shaped surface, the module splicing layout, and the installation conditions.
[0015] Furthermore, the LED chips in the transition buffer are arranged in a clockwise or counterclockwise rotation, and each row of chips is arranged in a uniform rotation at equal angles or in a non-uniform rotation at equal angles, with the total rotation angle of the buffer being 180°.
[0016] The present invention provides an LED dome display device, comprising region A, region B and region C, with region A and region C respectively arranged on both sides of region B; LED beads with tri-color light-emitting diode chips are evenly distributed on regions A, region C and region B; characterized in that: the light-emitting diode chips of regions A, region C and region B are arranged in a straight line in the horizontal direction, and the array of light-emitting diode chips extends smoothly along the curved contour of regions A and region C.
[0017] Furthermore, regions A and C are spherical or near-spherical structures, and region B is a curved surface structure that unfolds into a rectangle. When regions A and C extend from one end closer to region B to the other end farther from region B, the display module gradually changes from a trapezoidal shape to a fan shape along the curved surface contour, forming an pole at the end farther from region B and an equator on the opposite side. The array of LED chips smoothly converges to the pole along the curved surface contour of regions A and C.
[0018] Furthermore, using the spacing, display module size, and brightness parameters corresponding to the LED chip matrix in region B as benchmark parameters, regions A and C are set with reference to these benchmark parameters.
[0019] Furthermore, from the equator to the poles, the number of LEDs in regions A and C gradually decreases as the surface extends, and the center-to-center spacing of the LEDs in regions A and C remains consistent with that in region B.
[0020] The present invention provides a method for arranging light-emitting diodes, which divides the screen into regions A, B, and C, with regions A and C located on opposite sides of region B; and arranges the light-emitting diode cores of each region according to the arrangement method described above.
[0021] 3. Beneficial effects Compared with the prior art, the technical solution provided by this invention has the following advantages: (1) This invention adopts the same vertical arrangement of the light-emitting tube cores in the central area B of the dome of the LED dome as the left and right hemisphere areas, and mirrors the order of the light-emitting tube cores after crossing the dome center line, so that the tube core arrangement on both sides of the center line of area B can perfectly correspond to areas A and C respectively. Structurally, this significantly weakens the color difference boundary line and screen breakage problem formed at the splicing position in the traditional arrangement method, effectively avoids bright edge, dark edge and color edge phenomenon, and significantly improves the color uniformity and screen continuity of the overall display of the LED dome.
[0022] (2) This invention sets a transition buffer zone in the center area of the dome and arranges the light-emitting tube chips in the buffer zone by rotating them row by row at a set angle, so that the arrangement of the light-emitting tube chips smoothly transitions from the conventional order to the mirror order, replacing the arrangement jump caused by direct mirroring. This can effectively weaken the fine bright lines generated by the close proximity of the same color light-emitting chips at the center line position, making the splicing boundary softer and the display transition more natural, further improving the uniformity and visual integrity of the overall picture of the LED dome screen.
[0023] (3) The present invention adopts a light-emitting tube chip arrangement method based on the geometric convergence law of the spherical surface. A standard LED matrix is established with the central area of the dome as the reference. It extends to both sides in the horizontal direction and gradually reduces the number of LEDs as the surface converges. At the same time, the center distance of the LEDs is kept constant, so that the entire LED array smoothly converges along the spherical screen outline. This completely eliminates the obvious visual dividing line in the traditional chip arrangement, so that the overall picture presents a stable state without any cut or color difference boundary, and maximizes the immersive display experience.
[0024] (4) By optimizing the arrangement of LED chips, this invention can significantly alleviate the color difference problem in LED dome splicing display. Only with the assistance of conventional software calibration, the splicing area can achieve uniform color consistency, effectively reducing the system debugging complexity and later maintenance cost. At the same time, it overcomes the drawback of traditional software calibration, which cannot completely eliminate the color difference boundary line, and significantly improves the overall consistency of dome display. Attached Figure Description
[0025] Figure 1 This is a schematic diagram showing the arrangement of LED chips in hemispherical regions A and C of an LED dome screen. Figure 2 A schematic diagram of the conventional arrangement of LED tube chips in area B of an LED dome-shaped screen; Figure 3 A schematic diagram of the conventional arrangement of LED tube chips in area B of an LED dome-shaped screen; Figure 4 This is a schematic diagram showing two distinct color differences, indicated by yellow arrows, in the standard method one. Figure 5 This is a diagram illustrating two distinct color differences, indicated by yellow arrows, in the second conventional method. Figure 6 This is a schematic diagram of the improved LED dome area B LED chip arrangement scheme described in Example 1; Figure 7 This is a schematic diagram of the improved LED dome area B LED chip arrangement scheme described in Example 2; Figure 8 This is an enlarged schematic diagram of a portion of the transition zone described in Example 2; Figure 9 This is a schematic diagram of the actual LED arrangement in a portion of the transition zone described in Example 2; Figure 10 This is a schematic diagram of the actual LED arrangement in the flattened state of region B as described in Example 2; Figure 11 This is a schematic diagram of the improved LED dome light-emitting tube chip arrangement scheme described in Example 3.
[0026] Explanation of the labels in the diagram: 1. Region A; 2. Region B; 3. Region C; 4. Pole; 5. Equator; 6. Central axis; 7. Transition buffer zone. Detailed Implementation
[0027] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.
[0028] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.
[0029] This invention uses a capsule-shaped dome screen as a typical embodiment for illustration. This capsule-shaped dome screen is a type of irregularly shaped LED display screen, exhibiting a horizontally cut capsule shape. It mainly includes spherical display areas A and C on both sides, and area B in the middle. Areas A and C can be regular spherical structures or near-spherical curved structures. Area B is the transition area between areas A and C. As areas A and C extend from the end furthest from area B to the end closest to area B, the display module gradually changes from a trapezoidal shape to a fan shape following the curved contour. The junction where area B connects with areas A and C is a critical and sensitive area where color difference, color cast, and visual demarcation lines are most likely to occur due to the gradual change in module shape and the change in the viewing angle of the LED beads. This is also the core location where this invention focuses on solving the color difference problem. Any irregularly shaped LED dome / dome screen display device with similar structural features to this capsule-shaped dome screen can use the LED chip arrangement concept of this invention to eliminate splicing color difference and falls within the protection scope of this invention.
[0030] Meanwhile, the accompanying drawings in this specification are merely schematic diagrams drawn to clearly illustrate the technical solution. Regions A, C, and the central region B are standardized structures, and the region divisions and splicing lines are only idealized representations for ease of understanding. Actual LED capsule-shaped dome screen products require adaptive design based on specific installation scenarios, space dimensions, and surface curvature. Their region shapes, module shapes, splicing positions, and surface curvature will differ from the structures shown in the accompanying drawings. These approximate variations between the actual structures and standard forms do not affect the scope of protection of this invention.
[0031] Furthermore, it is worth noting that actual LED dome screens are composed of multiple display modules assembled together. Each module surface is covered with multiple LED beads, and each bead contains red, green, and blue light-emitting diode chips arranged in a straight line. The accompanying drawings in this specification are only for clearly and intuitively illustrating the technical concept and chip arrangement design of this invention; the complete LED bead structure is not shown, but rather the light-emitting diode chips are schematically drawn directly on the screen area to highlight their arrangement order. The chip arrangement intervals, density, and sizes shown in the drawings are all illustrative and do not reflect the actual proportions and parameters of the product. Figure 7 Only half of the die in the middle transition zone is drawn. Figure 7 and Figure 8 The die size in the transition zone is significantly smaller than that in other areas. This is a graphic representation to facilitate the distinction between the transition zone and the regular zone, and does not represent the actual shape and size of the die in the actual product. The above graphic representation does not constitute a limitation on the scope of protection of this invention.
[0032] In this invention, the vertical direction is defined as extending along the vertical arc of the capsule-shaped dome screen, and also as the vertical direction extending along the curved surface height of regions A, C, and the middle region B; the horizontal direction is perpendicular to the above vertical direction, extending laterally along the capsule screen and crossing regions A, B, and C. In this invention, the LED chips are arranged vertically in a straight line, meaning that the length direction of the chips is arranged vertically along the screen body; a horizontal or transverse arrangement means that the length direction of the chips is arranged horizontally along the screen body.
[0033] Example 1 Combination Figure 6 This embodiment of an LED dome display device includes region A (corresponding to region 1 in the attached figure), region B (corresponding to region 2 in the attached figure), and region C (corresponding to region 3 in the attached figure). Regions A and C adopt a spherical or near-spherical structure, and region B is a curved surface structure that unfolds into a rectangle. When regions A and C extend from the end away from region B to the end closer to region B, the display modules mounted on them gradually transition from a trapezoidal shape to a fan shape along the spherical contour, and converge at the upper end of adjacent region B to form a pole 4, and form an equator line 5 at the lower boundary. Among them, the LED beads are most densely arranged at the pole position, and the display module at the equator position has the largest width and the most uniform pixel distribution.
[0034] In this embodiment, the LED chips in regions A and C are arranged in a vertical red-green-blue straight line, extending from the equator 5 towards the pole 4 and finally converging at the pole 4 to ensure white balance and horizontal viewing angle display effects. This embodiment optimizes and improves the LED chip arrangement in the central region B. The LED chips in the central region B are also arranged in a vertical red-green-blue straight line, and after the LED chip arrangement crosses the central axis 6 of the dome in region B, the chip arrangement order is mirrored, changing the original red-green-blue chip arrangement order to blue-green-red.
[0035] By mirroring, the arrangement of the LED cores on both sides of the central axis 6 in region B can be kept consistent with that in regions A and C, respectively. This avoids color differences and image fragmentation caused by the reverse arrangement of the cores, ensuring that the left and right display areas are uniform in color and have no obvious differences when the audience enters the capsule-shaped dome screen.
[0036] This embodiment significantly weakens the color difference boundary at the splicing point by adjusting the arrangement of the LED chips, effectively avoiding bright edges, dark edges, and color edges. Only at position 6 on the central axis, a slight bright line is formed due to the adjacent arrangement of red LED chips. Since this position is located in the center of the top of the dome-like screen, it does not visually affect the overall display effect. Furthermore, this slight bright line can be further weakened and faded by fine-tuning the brightness and color coordinates of the LED chips through software. Therefore, it can significantly improve the color uniformity and image continuity of the overall LED dome-like screen display.
[0037] It is worth noting that currently, mainstream LED chips in the industry are arranged in the order of red, green, and blue. When the arrangement of the LED chips crosses the central axis 6 of region B, the chip arrangement order is mirrored, and the arrangement order changes to blue, green, and red. However, the core design of this invention lies in using the above-mentioned mirroring method to match the LED chip arrangement order of region B on both sides of the central axis 6 with regions A and C, respectively. Even if some manufacturers use unconventional LED chip arrangement orders, adaptation can be achieved simply by mirroring and adjusting to the corresponding matching arrangement order. Such workarounds all fall within the design concept of this invention.
[0038] Example 2 Combination Figures 7-10 This embodiment of an LED dome-shaped display device, based on Embodiment 1, includes a transition buffer zone 7 positioned at the top center of region B in the central part of the dome. The transition buffer zone 7 can be positioned either symmetrically extending to the left and right sides of the central axis 6 of region B, forming a symmetrical transition buffer zone; or it can be arranged asymmetrically according to the actual screen structure and visual effect requirements. Furthermore, the transition buffer zone is not limited to... Figure 7The regular rectangular outline shown can be combined with the curved surface curvature of the capsule-shaped dome screen, the module splicing layout, and the on-site installation conditions to flexibly plan the actual outline, range, and area of the buffer zone. As long as a buffer zone that can achieve the arrangement of tube cores is reasonably arranged at the top center of area B, it is sufficient.
[0039] Instead of a direct mirror arrangement, the LED chips in transition buffer 7 are rotated and installed row by row at a set angle. This multi-row rotation of LED chips creates a transition section, allowing the chip arrangement to smoothly transition from red-green-blue to blue-green-red. This transition buffer, formed by the rotation, effectively weakens or even eliminates the fine bright lines generated by a direct mirror arrangement at the center of the dome, making the splicing boundaries within region B, and between region B and regions A and C, smoother and further improving overall display uniformity.
[0040] It is worth noting that in the non-buffered areas located on both sides of the transition buffer zone 7 in region B, the LED chips are arranged in a vertical red-green-blue line and a vertical blue-green-red line, respectively. The LED chip arrangement order remains consistent at the connection points between the buffer zone and adjacent non-buffered areas. Inside the buffer zone, the LED chips are rotated row by row at a preset angle, with the rotation direction either clockwise or counterclockwise. During the arrangement process, the rotation angle of each row of chips can be uniform or non-uniform, with varying angles. The overall arrangement must ensure that the cumulative rotation angle reaches 180° when gradually rotating from one side of the buffer zone to the other, so that the LED chip arrangement at the connection points between the buffer zone and adjacent non-buffered areas is naturally aligned and consistent.
[0041] Figure 7 The diagram shows the overall arrangement of LED chips in area B after the transition buffer zone is set up. It clearly shows the transition buffer zone set up at the center of the dome in area B, as well as the basic arrangement of LED chips in the non-buffered areas on the left and right sides of the buffer zone. The LED chips outside the buffer zone are arranged in a neat vertical red-green-blue and blue-green-red line, respectively. The overall layout presents a layout with the buffer zone as the middle transition and the LED chips on both sides arranged in an orderly manner. Figure 8 This is a schematic diagram showing the row-by-row rotation arrangement of the transition buffer zone dies. Figure 9 This is a schematic diagram of the actual LED bead arrangement in the transition zone, illustrating the actual arrangement of the LED beads and the internal light-emitting diode core. Figure 10 To flatten the curved area B, a schematic diagram of the actual LED arrangement in the flattened state of area B is shown.
[0042] Example 3 Combination Figure 11 This embodiment of an LED dome display device proposes an LED dome light-emitting tube chip arrangement scheme based on the geometric convergence law of the sphere to fundamentally solve the visual boundary line problem caused by the arrangement of light-emitting tube chips.
[0043] In this embodiment, regions A and C are deflected by a certain angle compared to embodiment 1. That is, as regions A and C extend from one end adjacent to region B to the other end away from region B, the display module gradually transitions from a trapezoidal shape to a fan shape along the curved surface contour, and forms an extreme point 4 at the end away from region B, while the opposite side forms the equator line 5.
[0044] Meanwhile, this embodiment uses the parameters corresponding to the LED matrix in the central region B of the dome-like screen as a standard. These parameters include LED spacing, display module size, LED brightness, and other related parameters. Regions A and C are also set according to this standard. The LED chips inside the LEDs extend horizontally (or laterally) to the left and right sides, arranged in a red-green-blue or blue-green-red straight line from one side of region B to the other. They extend along the curved structure to both sides of regions A and C, so that the LED chip array smoothly converges along the curved contours of regions A and C to the dome-like screen pole 4.
[0045] The LED chip arrangement method gradually reduces the number of LED chips (actually reducing the number of LED beads) row by row, while maintaining the center-to-center spacing of the LED chips in areas A and C consistent with that in area B. In this way, following the convergent shape of the dome screen, irregular jumps in the LED chip arrangement are eliminated, and the visual boundary lines caused by traditional splicing and chip arrangement are completely eliminated at the structural level, achieving an immersive display effect with no fragmentation and no color difference boundaries in the overall picture.
[0046] It is worth noting that, such as Figure 1 In the capsule screen shown, regions A and C have their LED chips converging at the upper end near region B to form pole 4. Due to the constraint of the LED chip spacing, the closer regions A and C are to pole 4, the fewer LED chips are deployed, resulting in significant image distortion around the pole and a vortex-like visual defect. In this embodiment, pole 4 is placed at both ends of the capsule screen, and the LED chips are extended horizontally. This structure can eliminate the visual boundary between different regions and avoid the vortex-like image distortion generated at the pole, effectively optimizing the overall display effect.
[0047] Example 4 This embodiment describes a method for eliminating color difference in LED capsule-shaped dome screen splicing. First, the entire capsule-shaped dome screen is divided into a left quarter-sphere region A, a right quarter-sphere region C, and a central region B connecting region A and region C. Regions A and C transition smoothly from a trapezoidal shape to a fan shape as they move from the end furthest from region B to the end closest to region B. The junction between region B and regions A and C is a critical sensitive area prone to color difference, color cast, and visual demarcation lines.
[0048] According to any of the aforementioned Examples 1, 2, or 3, the LED chips are arranged in regions A, C, and the middle region B, respectively.
[0049] By applying the aforementioned tube arrangement method to the three divided areas, the orientation and arrangement order of the light-emitting tubes in each area are unified at the structural level. This effectively avoids problems such as bright edges, dark edges, color edges, and screen fragmentation caused by tube arrangement and gradual splicing of curved modules. It eliminates the need for extensive point-by-point correction using software and only requires auxiliary fine-tuning with conventional software. It completely eliminates color difference boundaries at the splicing points of the areas, making the color transition of the capsule-shaped dome screen natural and the image display uniform and continuous, fully leveraging the immersive visual effect of the irregular curved screen.
[0050] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. An LED dome display device, comprising region A, region B, and region C, with region A and region C respectively arranged on both sides of region B; LED beads with tri-color light-emitting diode chips are evenly distributed on regions A, region C, and region B; characterized in that: The LED chips in areas A and C are arranged in a vertical line; the LED chips in area B are also arranged in a vertical line. After the LED chip arrangement in area B crosses the central axis of its own dome, the chip arrangement order is mirrored.
2. The LED dome display device according to claim 1, characterized in that: After mirroring, the arrangement order of the LED chips on both sides of the central axis of region B is consistent with the arrangement order of the LED chips in regions A and C, respectively.
3. An LED dome display device according to claim 1 or 2, characterized in that: Regions A and C are spherical or near-spherical structures, while region B is a curved surface structure that unfolds into a rectangle. When regions A and C extend from the end furthest from region B to the end closest to region B, the display module gradually changes from a trapezoidal shape to a fan shape along the curved surface contour, forming an pole at the end closest to region B and an equator on the other side.
4. The LED dome display device according to claim 3, characterized in that: The light-emitting diode cores in regions A and C extend from the equator towards the poles and eventually converge at the poles.
5. An LED dome display device according to claim 1 or 2, characterized in that: A transition buffer zone is set at the center of the dome in region B. The LED chips inside the transition buffer zone are arranged in a row by row according to a set angle, so that the connection position between the transition buffer zone and the adjacent non-buffer zone and the arrangement order of the LED chips are kept uniform.
6. The LED dome display device according to claim 5, characterized in that: The transition buffer zone is laid out with the central axis of region B as the reference. The transition buffer zone extends symmetrically to the left and right along the central axis, or is laid out in an asymmetrical manner. The outline of the transition buffer zone is flexibly set in combination with the curvature of the dome-shaped surface, the module splicing layout, and the installation conditions.
7. The LED dome display device according to claim 5, characterized in that: The LED chips in the transition buffer zone are arranged in a clockwise or counterclockwise rotation. Each row of chips is arranged in a uniform rotation at equal angles or in a non-uniform rotation at equal angles. The total rotation angle of the buffer zone is 180°.
8. An LED dome-shaped display device, characterized in that: It includes regions A, B, and C, with regions A and C respectively arranged on both sides of region B; LED beads with tri-color light-emitting diode chips are evenly distributed on regions A, C, and B; the characteristic is that the light-emitting diode chips in regions A, C, and B are arranged in a straight line in the horizontal direction, and the array of light-emitting diode chips extends smoothly along the curved contour of regions A and C.
9. The LED dome display device according to claim 8, characterized in that: Regions A and C are spherical or near-spherical structures, while region B is a curved surface structure unfolded into a rectangle. As regions A and C extend from one end closer to region B to the other, the display module gradually changes from a trapezoidal shape to a fan shape along the curved surface contour, forming an pole at the end furthest from region B and an equator on the opposite side. The array of LED chips smoothly converges to the pole along the curved surface contour of regions A and C.
10. An LED dome display device according to claim 8, characterized in that: Using the spacing, display module size, and brightness parameters corresponding to the LED chip matrix in region B as the benchmark parameters, regions A and C are set with reference to these benchmark parameters.
11. The LED dome display device according to claim 9, characterized in that: From the equator to the pole, the number of LEDs in regions A and C gradually decreases as the surface extends, and the center-to-center spacing of the LEDs in regions A and C remains consistent with that in region B.
12. A method for arranging light-emitting diodes, characterized in that: The screen is divided into regions A, B, and C, with regions A and C located on either side of region B. The light-emitting diode chips in each region are arranged according to any one of claims 1 to 7 or any one of claims 8 to 11.