Full-protection energy-saving high-brightness indoor and outdoor micro-spacing LED screen

Abstract

The utility model discloses a full-protection energy-saving high-brightness indoor and outdoor micro-spacing LED screen, which belongs to the technical field of display screens, and comprises a circuit support plate, a plurality of integrated circuits and a plurality of data interfaces are arranged on the back surface of the circuit support plate, and a plurality of light sources are arranged on the front surface of the circuit support plate. The integrated protective glue with the lenses is injected on the light sources in a pressing mode, the brightness of the light sources is intensively enhanced through the light gathering effect of the integrated protective glue with the lenses, and the whole light source module is protected. In an outdoor environment, the front brightness of the screen is enhanced through a condensation effect, light reflection and vision blurring caused by direct sunlight are counteracted, content readability is improved, for example, indoor and outdoor display screen display is achieved, power does not need to be improved, active brightening is achieved through optical design, and power consumption in a high-brightness scene is reduced; and the waterproof and dustproof effects without additional design can also be achieved.

Description

Technical Field

[0001] This utility model relates to an energy-saving, high-brightness outdoor micro-pitch LED screen, belonging to the field of display screen technology. Background Technology

[0002] In today's digital age, screens of various electronic devices are widely used in all aspects of people's lives and work. Especially as outdoor displays become increasingly clear and have smaller pixel pitches, conventional technical solutions cannot adequately address issues related to brightness, clarity, and energy efficiency. However, when these screens are outdoors, insufficient brightness often leads to difficulty in seeing content due to lighting conditions. Simply increasing brightness requires increasing power consumption, thus raising energy costs.

[0003] With the widespread use of electronic devices, people's demands for their user experience in different environments are constantly increasing. Whether it's checking data on a mobile device while working outdoors, using a car navigation screen to get route information in sunlight, or using an outdoor advertising screen to convey information to the public, the screen's visibility outdoors is crucial.

[0004] Currently, common methods to address the impact of outdoor sunlight on screens include adjusting the screen's brightness and using anti-glare films. While adjusting screen brightness can partially offset sunlight reflection and improve display quality, limitations in device hardware mean that excessively increasing brightness significantly increases energy consumption, affecting battery life and device lifespan. Furthermore, the effect of increasing brightness remains very limited under direct sunlight. Using anti-glare films can reduce direct sunlight and lower reflectivity, but this only partially improves the visual experience and is less effective at solving the problem of low contrast between screen content and background light caused by excessively strong ambient light.

[0005] LED beads emit light at a 180-degree angle, but the actual viewing angle for humans is between 120 and 140 degrees. The excess light is wasted and converted into heat, resulting in energy waste.

[0006] Furthermore, methods such as adjusting the power and angle of the sun or finding a shady spot to use the device have significant limitations in practical applications and cannot meet people's needs for convenient screen use anytime, anywhere. Utility Model Content

[0007] The purpose of this invention is to provide a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board. The back of the circuit board is provided with several integrated circuits and several data interfaces, and the front of the circuit board is provided with several light sources. An integral protective adhesive with lenses is pressed onto several of the light sources. The brightness of the light source is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive with lenses.

[0010] Preferably, the integrated protective adhesive with lens is integrally formed from several spherical or aspherical structures.

[0011] Preferably, the cross-section of the integrated protective adhesive with lens is formed by connecting multiple arc-shaped curved surface units end to end, and the highest point of each curved surface unit corresponds to a light source.

[0012] Preferably, the cross-section of the integrated protective adhesive with lens includes multiple arc-shaped curved surface units, and the connection between two adjacent curved surface units is a straight line structure.

[0013] Preferably, the cross-section of the integrated protective adhesive with lens includes multiple arc-shaped curved surface units, the connection between two adjacent curved surface units is an arc-shaped structure, and the arc center angle of the arc structure is less than or equal to the arc center angle of the curved surface unit.

[0014] Preferably, the cross-section of the integrated protective adhesive with lens has a continuous, regular wavy or zigzag structure.

[0015] Preferably, the integrated protective adhesive with lens is a D-lens with a stepped structure.

[0016] Preferably, the connection between two adjacent stepped structures is a straight line or a semi-circular structure, and the highest point of the stepped structure corresponds one-to-one with the light source.

[0017] Preferably, the lowest point of the stepped structure corresponds one-to-one with the light source, and the connection between two adjacent stepped structures is a straight line or an arc.

[0018] Preferably, the stepped structure includes a plurality of arc-shaped protrusions, which are arranged in an arc shape, with the arc-shaped protrusion at the highest point corresponding to the light source.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: several light sources are impregnated with fully enclosed protective lenses. By utilizing the light-concentrating effect of the lenses, the brightness of the light source is concentrated and enhanced. This also protects the entire light source module. In outdoor environments, the brightness of the screen front is enhanced through the light-concentrating effect, offsetting the reflection and visual blur caused by direct sunlight, and improving the readability of the content. For indoor and outdoor display screens, no power increase is required. Active brightness enhancement is achieved through optical design, reducing power consumption in high-brightness scenarios. It also provides waterproof and dustproof protection without the need for additional design. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a partial structural schematic diagram of Embodiment 1 of the present invention;

[0022] Figure 2 This is a partial structural schematic diagram of Embodiment 2 of the present invention;

[0023] Figure 3 This is a partial structural schematic diagram of Embodiment 3 of the present invention;

[0024] Figure 4 This is a partial structural schematic diagram of Embodiment 4 of the present invention;

[0025] Figure 5 This is a partial structural schematic diagram of Embodiment 5 of the present invention;

[0026] Figure 6 This is a partial structural schematic diagram of Embodiment Six of this utility model;

[0027] Figure 7 This is a partial structural schematic diagram of Embodiment Seven of the present invention;

[0028] Figure 8 This is a front view of a dotted diagram of an embodiment of the present invention;

[0029] Figure 9 This is a partial structural schematic diagram of Embodiment 8 of the present invention;

[0030] Figure 10 This is a partial structural schematic diagram of Embodiment Nine of this utility model;

[0031] Figure 11 This is a partial structural schematic diagram of Embodiment 10 of the present invention;

[0032] Figure 12 This is a partial structural schematic diagram of Embodiment Eleven of the present utility model;

[0033] Figure 13 This is a partial structural schematic diagram of Embodiment Twelve of the present utility model;

[0034] Figure 14 This is a partial structural schematic diagram of Embodiment Thirteen of this utility model;

[0035] Figure 15 This is a front view of another embodiment of the present invention.

[0036] In the diagram: 1. Circuit board; 2. Integrated circuit; 3. Data interface; 4. Light source; 5. Integrated protective adhesive with lens. Detailed Implementation

[0037] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Please see Figures 1-15 This utility model provides a technical solution:

[0039] Example 1:

[0040] like Figure 1 and Figure 8 As shown, a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board 1. Several integrated circuits 2 and several data interfaces 3 are arranged on the back of the circuit board 1. Several light sources 4 are arranged on the front of the circuit board 1. An integral protective adhesive 5 with lenses is pressed onto the several light sources 4. The brightness of the light sources 4 is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive 5 with lenses.

[0041] Furthermore, the integrated protective adhesive 5 with lens is integrally molded from several spherical or aspherical structures.

[0042] Furthermore, the cross-section of the integrated protective adhesive 5 with lens is composed of multiple arc-shaped curved surface units connected end to end, and the highest point of each curved surface unit corresponds one-to-one with the light source 4.

[0043] By utilizing the light-concentrating effect of the integrated protective adhesive 5 with lenses, the brightness of the light source 4 is enhanced. In strong outdoor light environments, the brightness of the front of the screen is enhanced through the light-concentrating effect, which cancels out the reflection and visual blur caused by direct sunlight and improves the readability of content, such as outdoor advertising screens, car navigation, and mobile phone outdoor mode. There is no need to significantly increase the screen backlight power. Passive brightening is achieved through optical design, reducing power consumption in high brightness scenarios.

[0044] Example 2:

[0045] like Figure 2 As shown, compared with Embodiment 1, in this embodiment, the distance between the highest point of the curved surface unit and the light source 4 is smaller than the distance between the highest point of the curved surface unit and the light source 4 in Embodiment 1.

[0046] Compared with Embodiment 1, the above method reduces the radius of curvature of the integrated protective adhesive 5 with lens, brings the light focus closer to the screen, makes the light convergence angle steeper, and improves the brightness concentration on the front.

[0047] Example 3:

[0048] like Figure 3 As shown, a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board 1. Several integrated circuits 2 and several data interfaces 3 are arranged on the back of the circuit board 1. Several light sources 4 are arranged on the front of the circuit board 1. An integral protective adhesive 5 with lenses is pressed onto the several light sources 4. The brightness of the light sources 4 is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive 5 with lenses.

[0049] Furthermore, the integrated protective adhesive 5 with lens is integrally molded from several spherical or aspherical structures.

[0050] Furthermore, the cross-section of the integrated protective adhesive 5 with lens includes multiple arc-shaped curved surface units, and the connection between two adjacent curved surface units has a straight structure.

[0051] In this embodiment, the straight-line structure between the curved units allows light to shine freely, while the arc-shaped area focuses the light, achieving a mixed effect of local brightening and local wide viewing angle. This avoids the edge being too dark due to the full-screen arc shape. The central area that requires high brightness is arc-shaped, while the edges are flat to maintain a certain viewing angle.

[0052] Example 4:

[0053] like Figure 4As shown, a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board 1. Several integrated circuits 2 and several data interfaces 3 are arranged on the back of the circuit board 1. Several light sources 4 are arranged on the front of the circuit board 1. An integral protective adhesive 5 with lenses is pressed onto the several light sources 4. The brightness of the light sources 4 is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive 5 with lenses.

[0054] Furthermore, the integrated protective adhesive 5 with lens is integrally molded from several spherical or aspherical structures.

[0055] Furthermore, the cross-section of the integrated protective adhesive 5 with lens includes multiple arc-shaped curved surface units, the connection between two adjacent curved surface units is an arc-shaped structure, and the arc center angle of the arc structure is smaller than the arc center angle of the curved surface unit.

[0056] By adopting an arc-shaped structure with a smaller arc-shaped center angle than the curved surface unit, the focusing angle is narrow, enhancing the brightness in the center and forming a gradient distribution of ultra-high brightness in the center and medium brightness around the perimeter. While maintaining the ultimate brightness on the front, the viewing angle range is widened.

[0057] Example 5:

[0058] like Figure 5 As shown, a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board 1. Several integrated circuits 2 and several data interfaces 3 are arranged on the back of the circuit board 1. Several light sources 4 are arranged on the front of the circuit board 1. An integral protective adhesive 5 with lenses is pressed onto the several light sources 4. The brightness of the light sources 4 is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive 5 with lenses.

[0059] Furthermore, the integrated protective adhesive 5 with lens is integrally molded from several spherical or aspherical structures.

[0060] Furthermore, the cross-section of the integrated protective adhesive 5 with lens includes multiple arc-shaped curved surface units, the connection between two adjacent curved surface units is an arc-shaped structure, and the central angle of the arc-shaped structure is equal to the central angle of the curved surface unit.

[0061] Compared with Embodiment 4, in this embodiment, by adopting an arc structure with the arc center angle equal to the arc center angle of the curved surface unit, the focusing angle is wider, covering the medium and near distance viewing angles, and the medium viewing angle range is wider than that of Embodiment 4.

[0062] Example 6:

[0063] like Figure 6As shown, a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board 1. Several integrated circuits 2 and several data interfaces 3 are arranged on the back of the circuit board 1. Several light sources 4 are arranged on the front of the circuit board 1. An integral protective adhesive 5 with lenses is pressed onto the several light sources 4. The brightness of the light sources 4 is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive 5 with lenses.

[0064] Furthermore, the integrated protective adhesive 5 with lens is integrally molded from several spherical or aspherical structures.

[0065] Furthermore, the cross-section of the integrated protective adhesive 5 with lens has a continuous wavy structure.

[0066] By employing an integrated protective adhesive 5 with a lens and a continuous wave-shaped structure, the wave-shaped curved surface disperses the direction of strong light reflection, making it suitable for scenarios sensitive to glare. The wave structure makes the light emission angle more dispersed and the brightness distribution on the screen surface more uniform.

[0067] Example 7:

[0068] like Figure 7 As shown, a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board 1. Several integrated circuits 2 and several data interfaces 3 are arranged on the back of the circuit board 1. Several light sources 4 are arranged on the front of the circuit board 1. An integral protective adhesive 5 with lenses is pressed onto the several light sources 4. The brightness of the light sources 4 is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive 5 with lenses.

[0069] Furthermore, the integrated protective adhesive 5 with lens is integrally molded from several spherical or aspherical structures.

[0070] Furthermore, the cross-section of the integrated protective adhesive 5 with the lens has a continuous and regular zigzag structure.

[0071] By employing an integrated protective adhesive 5 with a lens and a continuous, regular zigzag structure, the light is directionally reflected to a specific angle by utilizing the reflection / refractive properties of the zigzag surface, achieving high brightness only in the direction of the reflection angle corresponding to the zigzag surface, while the brightness is extremely low at other angles.

[0072] Example 8:

[0073] like Figure 9 and Figure 15As shown, a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board 1. Several integrated circuits 2 and several data interfaces 3 are arranged on the back of the circuit board 1. Several light sources 4 are arranged on the front of the circuit board 1. An integral protective adhesive 5 with lenses is pressed onto the several light sources 4. The brightness of the light sources 4 is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive 5 with lenses.

[0074] Furthermore, the integrated protective adhesive 5 with lens is a 3D lens with several stepped structures.

[0075] Furthermore, the connection between two adjacent stepped structures is a straight line, and the highest point of the stepped structure corresponds one-to-one with the light source 4.

[0076] In the above scheme, the stepped structure, as a long focal length small lens, has a weaker ability to converge light. It has a long focal length, a large radius of curvature, and a small angle of light refraction. Some light is still distributed in the side view direction, so the sacrifice of viewing angle is small and the decrease in side view brightness is less than 30%. The transition area of ​​the straight structure is equivalent to the non-focusing area, which reduces optical interference between adjacent lenses and avoids uneven local brightness.

[0077] Example 9:

[0078] like Figure 10 As shown, a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board 1. Several integrated circuits 2 and several data interfaces 3 are arranged on the back of the circuit board 1. Several light sources 4 are arranged on the front of the circuit board 1. An integral protective adhesive 5 with lenses is pressed onto the several light sources 4. The brightness of the light sources 4 is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive 5 with lenses.

[0079] Furthermore, the integrated protective adhesive 5 with lens is a 3D lens with several stepped structures.

[0080] Furthermore, the connection between two adjacent stepped structures is a semi-circular structure, the highest point of the stepped structure corresponds one-to-one with the light source 4, and the distance between the highest point of the stepped structure and the light source 4 is less than the distance between the highest point of the stepped structure and the light source 4 in Embodiment 8.

[0081] Compared to Embodiment 8, the above solution has a stronger ability to converge light. The light is strongly refracted to the frontal view direction, and the brightness drops sharply when viewed from the side, forming a central high-brightness area. The semi-circular transition area is equivalent to an auxiliary light-gathering structure, which further converges the edge light of adjacent steps towards the center, enhancing the brightness when viewed from the front.

[0082] Example 10:

[0083] like Figure 11As shown, a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board 1. Several integrated circuits 2 and several data interfaces 3 are arranged on the back of the circuit board 1. Several light sources 4 are arranged on the front of the circuit board 1. An integral protective adhesive 5 with lenses is pressed onto the several light sources 4. The brightness of the light sources 4 is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive 5 with lenses.

[0084] Furthermore, the integrated protective adhesive 5 with lens is a 3D lens with several stepped structures.

[0085] Furthermore, the lowest point of the stepped structure corresponds one-to-one with the light source 4, and the connection between two adjacent stepped structures is a straight line.

[0086] Specifically, the lowest point of the stepped structure corresponds one-to-one with light source 4, which scatters the light and spreads the light emitted by the light source to both sides, expanding the effective viewing angle and making it suitable for multi-person shared scenes. The straight structure transition area limits excessive scattering and avoids the light from being too dispersed, resulting in insufficient brightness when viewed directly.

[0087] Example 11:

[0088] like Figure 12 As shown, a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board 1. Several integrated circuits 2 and several data interfaces 3 are arranged on the back of the circuit board 1. Several light sources 4 are arranged on the front of the circuit board 1. An integral protective adhesive 5 with lenses is pressed onto the several light sources 4. The brightness of the light sources 4 is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive 5 with lenses.

[0089] Furthermore, the integrated protective adhesive 5 with lens is a 3D lens with several stepped structures.

[0090] Furthermore, the lowest point of the stepped structure corresponds one-to-one with the light source 4, and the connection between two adjacent stepped structures is an arc-shaped structure.

[0091] Specifically, compared with Example 10, this example uses an arc-shaped structure transition instead of a straight structure transition, making the light scattering path smoother, reducing the light intensity abrupt changes caused by stepped corners, improving the uniformity of side-view brightness, and the composite scattering structure can evenly distribute light within a ±60° viewing angle range. Although the front-view brightness is slightly lower than that of Example 10, the side-view performance is excellent.

[0092] Example 12:

[0093] like Figure 13As shown, a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board 1. Several integrated circuits 2 and several data interfaces 3 are arranged on the back of the circuit board 1. Several light sources 4 are arranged on the front of the circuit board 1. An integral protective adhesive 5 with lenses is pressed onto the several light sources 4. The brightness of the light sources 4 is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive 5 with lenses.

[0094] Furthermore, the integrated protective adhesive 5 with lens is a 3D lens with several stepped structures.

[0095] Furthermore, the lowest point of the stepped structure corresponds one-to-one with the light source 4, and the connection between two adjacent stepped structures is an arc-shaped structure, wherein the bent part of the stepped structure is an arc-shaped structure.

[0096] In this embodiment, the bent portion of the stepped structure is an arc-shaped structure, which solves the light reflection blind spot of the traditional right-angled steps, makes the light scattering at the edge of the steps more uniform, avoids local dark areas or bright spots, and can also reduce the stress concentration of the protective adhesive under bending or impact, thus improving crack resistance.

[0097] Example 13:

[0098] like Figure 14 As shown, a fully protected, energy-saving, high-brightness indoor and outdoor micro-pitch LED screen includes a circuit board 1. Several integrated circuits 2 and several data interfaces 3 are arranged on the back of the circuit board 1. Several light sources 4 are arranged on the front of the circuit board 1. An integral protective adhesive 5 with lenses is pressed onto the several light sources 4. The brightness of the light sources 4 is concentrated and enhanced by utilizing the light-focusing effect of the integral protective adhesive 5 with lenses.

[0099] Furthermore, the integrated protective adhesive 5 with lens is a 3D lens with several stepped structures.

[0100] Furthermore, the stepped structure includes several arc-shaped protrusions arranged in an arc shape, with the arc-shaped protrusion at the highest point corresponding to the light source 4.

[0101] In this embodiment, several arc-shaped protrusions form a composite convex surface. Each arc-shaped protrusion acts as an independent microlens, converging light from different angles. This avoids the problem of excessive brightness at the center and dark edges that may occur with a single large convex surface, improving the overall brightness uniformity to over 60%. The multi-protrusion structure can cover a wider range of light source angles, even if the light source position is slightly offset.

[0102] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully protected, energy-saving, high-brightness indoor / outdoor micro-pitch LED screen, characterized in that, The circuit includes a circuit board (1), on the back of which are arranged several integrated circuits (2) and several data interfaces (3), and on the front of which are arranged several light sources (4). An integral protective adhesive with a lens (5) is pressed onto the several light sources (4). The brightness of the light source (4) is concentrated and enhanced by utilizing the light-concentrating effect of the integral protective adhesive with a lens (5).

2. The fully protected, energy-saving, high-brightness indoor / outdoor micro-pitch LED screen according to claim 1, characterized in that, The integrated protective adhesive (5) with lens is integrally formed from several spherical or aspherical structures.

3. A fully protected, energy-saving, high-brightness indoor / outdoor micro-pitch LED screen according to claim 2, characterized in that, The cross-section of the integrated protective adhesive (5) with lens is composed of multiple arc-shaped curved surface units connected end to end, and the highest point of the curved surface unit corresponds one-to-one with the light source (4).

4. A fully protected, energy-saving, high-brightness indoor / outdoor micro-pitch LED screen according to claim 2, characterized in that, The cross-section of the integrated protective adhesive (5) with lens includes multiple arc-shaped curved surface units, and the connection between two adjacent curved surface units is a straight line structure.

5. A fully protected, energy-saving, high-brightness indoor / outdoor micro-pitch LED screen according to claim 2, characterized in that, The integrated protective adhesive (5) with lens has a cross-section comprising multiple arc-shaped curved surface units. The connection between two adjacent curved surface units is an arc-shaped structure, and the arc center angle of the arc structure is less than or equal to the arc center angle of the curved surface unit.

6. A fully protected, energy-saving, high-brightness indoor / outdoor micro-pitch LED screen according to claim 2, characterized in that, The cross-section of the integrated protective adhesive (5) with lens has a continuous, regular wavy or zigzag structure.

7. A fully protected, energy-saving, high-brightness indoor / outdoor micro-pitch LED screen according to claim 1, characterized in that, The integrated protective adhesive (5) with lens is a 3D lens with several stepped structures.

8. A fully protected, energy-saving, high-brightness indoor / outdoor micro-pitch LED screen according to claim 7, characterized in that, The connection between two adjacent stepped structures is a straight line or a semi-circular structure, and the highest point of the stepped structure corresponds one-to-one with the light source (4).

9. A fully protected, energy-saving, high-brightness indoor / outdoor micro-pitch LED screen according to claim 7, characterized in that, The lowest point of the stepped structure corresponds one-to-one with the light source (4), and the connection between two adjacent stepped structures is a straight line or an arc.

10. A fully protected, energy-saving, high-brightness indoor / outdoor micro-pitch LED screen according to claim 7, characterized in that, The stepped structure includes several arc-shaped protrusions, which are arranged in an arc shape, with the arc-shaped protrusion at the highest point corresponding to the light source (4).

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