A structure for solving bright and dark lines of LED micro-pitch display screen

Abstract

The utility model relates to LED technical field discloses a structure for solving LED micro -pitch display screen bright dark line, including at least two adjacent settings LED module body, the splicing edge of LED module body is equipped with rough structure, forms the splicing gap between the splicing edge of two adjacent LED module body, is equipped with the LED pixel unit according to two -dimensional matrix arrangement on LED module body, and the standard interval between two LED pixel units under standard state is c value, and the interval between two LED pixel units of the both sides of splicing gap is a value, and the interval between two LED pixels of LED module near edge is b value, wherein, a = c ± n, 10mu m < n < 15mu m, b = c ± m, 5mu m < m < 10mu m. The utility model solves the problem of display screen bright dark line, realizes uniform display.

Description

Technical Field

[0001] This utility model relates to the field of LED technology, and in particular to a structure for solving the problem of bright and dark lines in LED micro-pitch displays. Background Technology

[0002] In the LED display field, as people's demands for visual experience continue to increase, reducing pixel pitch and improving integration have become the main directions for development and breakthroughs in the LED display industry. LED displays are typically composed of multiple LED modules spliced ​​together. To achieve a seamless splicing effect between modules, the LED modules need to be CNC cut to form the splicing edges. However, limited by the precision of current CNC cutting (usually only ±0.02mm), physical gaps (i.e., d-values) will inevitably occur after adjacent LED modules are spliced ​​together. The size of these gaps will cause bright and dark lines in the display.

[0003] In view of the above reasons, this utility model proposes a structure to solve the problem of bright and dark lines in LED micro-pitch displays, so as to solve the problem of bright and dark lines in the display and achieve uniform display. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a structure for solving the problem of bright and dark lines in LED micro-pitch displays, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: A structure for solving the problem of bright and dark lines in LED micro-pitch displays includes at least two adjacent LED module bodies. The splicing edges of the LED module bodies have a roughened structure, and a splicing gap is formed between the splicing edges of two adjacent LED module bodies. Each LED module body has multiple LED pixel units arranged in a two-dimensional matrix. In a standard state, the standard spacing between two LED pixel units is a value c, the spacing between two LED pixel units on both sides of the splicing gap is a value a, and the spacing between two LED pixel units near the splicing edge of the LED module body is a value b, where a = c ± n, 10 μm < n < 15 μm; b = c ± m, 5 μm < m < 10 μm.

[0006] Furthermore, the seam is filled with a matte filler, and the reflectivity of the matte filler matches the reflectivity of the edge of the roughened structure.

[0007] Furthermore, the matte filler is a semi-transparent matte silicone with a reflectivity of ≤15%.

[0008] Furthermore, the filling height of the matte filler is slightly convex to the display surface height of the LED module body.

[0009] Furthermore, the roughening structure consists of several tiny pits formed at the splicing edge of the LED module body through a laser micro-roughening process, and the tiny pits are evenly distributed on the splicing edge surface.

[0010] Furthermore, the depth of the micro-pits is 3-8 μm, and the distance between two adjacent micro-pits is 0.1-0.3 mm.

[0011] Furthermore, the substrate of the LED module body is a metal substrate, and the roughening structure is provided at the splicing edge of the metal substrate.

[0012] Furthermore, the reflectivity of the splicing edge where the roughened structure is located is 12%-18%. Beneficial effects

[0013] Compared with the prior art, the present invention has at least the following advantages: This invention compensates for module cutting and manufacturing tolerances by adjusting the spacing b between two edge LED pixels. This makes the actual spacing a between LED pixel units on both sides of the splicing seam closer to the spacing c of the standard pixel unit after splicing, thus visually weakening the perception of the splicing seam and reducing its size. The low-reflectivity surface of the semi-transparent matte adhesive, combined with the diffuse reflection of the tiny pits, eliminates reflections from the splicing seam. Furthermore, the light transmission and supplementary lighting of the semi-transparent matte adhesive, combined with the tilted edge LED pixel units, prevents the generation of dark lines caused by the splicing seam obstruction. Attached Figure Description Figure 1 This is a schematic diagram of the LED module body assembly structure of this utility model.

[0014] Figure 2 This utility model Figure 1 A partially enlarged structural diagram.

[0015] Figure 3 This is a schematic diagram of the structure for filling the splicing gaps of this utility model.

[0016] The diagram is labeled as follows: 1-LED module body; 2-LED pixel unit; 3-matte filler; 4-micro-dimples; 5-seam seam. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, a detailed description is provided below in conjunction with the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] See Figures 1-3 This embodiment provides a structure for solving the problem of bright and dark lines in LED micro-pitch displays. It includes at least two adjacent LED module bodies 1, with a splicing gap 5 formed between the splicing edges of the two adjacent LED module bodies 1. The spacing of the splicing gap 5 is a value d. Each LED module body has multiple LED pixel units 2 arranged in a two-dimensional matrix. In a standard state, the standard spacing between two LED pixel units 2 is a value c. The spacing between two LED pixel units 2 on either side of the splicing gap 5 is a value a. The spacing between two LED pixel units near the edge of the LED module body 1 is a value b. Where a = c ± n, 10μm < n < 15μm; b = c ± m, 5μm < m < 10μm. By adjusting the value b, the cutting and manufacturing tolerances of the modules can be compensated, so that after splicing, the actual spacing a value of the LED pixel units on both sides of the splicing gap is closer to the standard pixel unit spacing c value, thereby visually weakening the perception of the splicing gap and visually reducing its size.

[0021] Preferably, the splicing gap 5 is filled with a matte filler 3, and the reflectivity of the matte filler 3 matches the reflectivity of the splicing edge where the roughened structure is located. The matte filler 3 is a semi-transparent matte silicone, which is low in cost, easy to obtain, and simple to fill. The reflectivity of this semi-transparent matte silicone is ≤15%, and the transmittance is 30%-50%. The filling height of the matte filler is slightly protruding from the display surface height of the LED module body 1 by 0.01-0.02mm. This slight protrusion is usually within an acceptable range, ensuring the overall visual flatness of the screen, guaranteeing the integrity of the displayed image, and reserving slack for possible subsequent overall surface treatment. The semi-transparent matte silicone can effectively absorb and diffuse ambient light, eliminate the reflection of the exposed substrate in the gap through the surface of the semi-transparent matte silicone, solve the problem of bright lines, and allow the scattered light of adjacent LED pixel units to pass through the gap, filling the brightness reduction caused by the splicing gap. Scattered light is uniformly diffused through the matte filler, allowing the brightness at the gaps to transition more naturally with the surrounding area.

[0022] Preferably, the splicing edge of the LED module body 1 has a roughened structure, and this roughening process can be completed simultaneously during CNC cutting of the module edge. The substrate of the LED module body 1 is a metal substrate, and the roughened structure is located at the splicing edge of the metal substrate. The reflectivity of the splicing edge where the roughened structure is located is 12%-18%.

[0023] The roughening structure consists of several tiny pits 4 formed at the splicing edge of the LED module body through a laser micro-roughening process. These tiny pits 4 are evenly distributed on the splicing edge surface. The depth of each tiny pit 4 is 3-8 μm, and the spacing between two adjacent tiny pits 4 is 0.1-0.3 mm. The tiny pits 4 diffusely reflect light, reducing the directional reflection of LED pixel light, and together with the matte filler lines, form a dual anti-reflective layer, eliminating gap reflections.

[0024] The LED pixel units 2 on both sides of the splicing seam 5 are tilted 5°-10° away from the seam. The rightmost pixel of the left module of the splicing seam is tilted to the left, and the leftmost pixel of the right module is tilted to the right, so that their light emission angle covers more of the splicing seam area. This reduces the obstruction of the LED pixel emission by the module edges, makes the brightness of the edge LED pixel units consistent with that of the middle LED pixel units, and eliminates the dark lines at the splicing seam.

[0025] In practical implementation, this invention compensates for module cutting and manufacturing tolerances by adjusting the spacing value b between two LED pixels at the edge. This makes the actual spacing value a of the LED pixel units on both sides of the splicing seam closer to the spacing value c of the standard pixel unit after splicing, thus visually weakening the perception of the splicing seam and reducing its size. The matte filler of this invention matches the reflectivity of the splicing edge where the micro-dimples are located. On the one hand, it fills the physical gap to avoid exposing the substrate; on the other hand, its matte properties absorb ambient light to control reflection, forming a dual synergistic effect with the roughened structure. The low-reflectivity surface of the semi-transparent matte adhesive, combined with the diffuse reflection of the micro-dimples, eliminates reflection from the splicing seam, completely eliminating bright lines caused by splicing seam reflection and significantly improving the display uniformity of the LED display. Furthermore, the light transmission and supplementary lighting of the semi-transparent matte adhesive, combined with the tilted edge LED pixel units, prevents the generation of dark lines caused by splicing seam obstruction.

[0026] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 this utility model.

Claims

1. A structure for solving the problem of bright and dark lines in LED micro-pitch displays, characterized in that, The device includes at least two adjacent LED module bodies. The splicing edges of the LED module bodies have a roughened structure, and a splicing gap is formed between the splicing edges of two adjacent LED module bodies. Each LED module body has multiple LED pixel units arranged in a two-dimensional matrix. In the standard state, the standard spacing between two LED pixel units is c, the spacing between two LED pixel units on both sides of the splicing gap is a, and the spacing between two LED pixel units near the splicing edge of the LED module body is b. Where a = c ± n, 10 μm < n < 15 μm; b = c ± m, 5 μm < m < 10 μm.

2. The structure for solving the problem of bright and dark lines in LED micro-pitch displays according to claim 1, characterized in that, The seam is filled with a matte filler, and the reflectivity of the matte filler matches the reflectivity of the edge of the roughened structure.

3. The structure for solving the problem of bright and dark lines in LED micro-pitch displays according to claim 2, characterized in that, The matte filler is a semi-transparent matte silicone with a reflectivity of ≤15%.

4. A structure for solving the problem of bright and dark lines in LED micro-pitch displays according to claim 2 or 3, characterized in that, The matte filler has a filling height that slightly protrudes from the display surface height of the LED module body.

5. A structure for solving the problem of bright and dark lines in LED micro-pitch displays according to claim 1 or 2, characterized in that, The roughening structure consists of several tiny pits formed at the splicing edge of the LED module body through a laser micro-roughening process, and the tiny pits are evenly distributed on the splicing edge surface.

6. The structure for solving the problem of bright and dark lines in LED micro-pitch displays according to claim 5, characterized in that, The depth of the micro-pits is 3-8 μm, and the distance between two adjacent micro-pits is 0.1-0.3 mm.

7. A structure for solving the problem of bright and dark lines in LED micro-pitch displays according to any one of claims 1, 2, and 6, characterized in that, The substrate of the LED module body is a metal substrate, and the roughening structure is provided at the splicing edge of the metal substrate.

8. The structure for solving the problem of bright and dark lines in LED micro-pitch displays according to claim 1, characterized in that, The reflectivity of the splicing edge where the roughened structure is located is 12%-18%.

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