Display module
By setting a transparent isolation wall doped with high refractive index particles on the module lamp board of the Mini LED display, the display sharpness and visual quality issues caused by light crosstalk are solved, achieving higher display sharpness and overall visual quality.
Patent Information
- Application Number
- CN202423100688.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-13
AI Technical Summary
The COB molding packaging of existing Mini LED displays causes optical crosstalk, affecting display sharpness and overall visual experience.
The LED beads are physically isolated by a transparent isolation wall doped with high refractive index particles. The high reflectivity of the wall blocks light crosstalk, and the transparent isolation wall ensures that there is no sense of separation when the screen is off.
It improves the display sharpness and overall visual quality of the display module, effectively blocks light crosstalk, and maintains transparency and visual consistency.
Smart Images
Figure CN223552539U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display technology, and more particularly to a display module. Background Technology
[0002] Mini LED displays primarily utilize COB (Chip-on-Board) molding encapsulation. COB molding encapsulation uses a single, integrated board design, where each pixel (LED chip) in the module's LED board is filled and protected by encapsulating adhesive. However, because the encapsulating adhesive is transparent, crosstalk easily occurs between pixels in the COB-molded module, leading to insufficient display sharpness. Current solutions typically involve using opaque materials that block or absorb light to separate the pixels and prevent crosstalk. However, in practical applications, this structure, while preventing crosstalk, often results in a noticeable sense of separation when the screen is off (i.e., each pixel appears independently positioned), severely impacting the overall visual appeal of the display. Utility Model Content
[0003] This application provides a display module that aims to improve the technical problem that the existing display module's structure for isolating optical crosstalk between pixels easily leads to a noticeable sense of segmentation after the screen is off, seriously affecting the overall appearance of the display module.
[0004] Therefore, this application provides a molding mechanism including a module lamp board. The module lamp board includes a lamp board body, a plurality of lamp beads, and a plurality of transparent isolation walls doped with high refractive index particles. The plurality of lamp beads and the plurality of transparent isolation walls are respectively arranged in an array on the first surface of the lamp board body, and at least one of the transparent isolation walls is provided around each lamp bead.
[0005] Optionally, in some embodiments of this application, the plurality of transparent isolation walls include a plurality of first isolation walls and a plurality of second isolation walls, wherein,
[0006] A plurality of the first isolation walls are arranged in an array on the first surface of the lamp panel body, and each of the first isolation walls extends longitudinally along the lamp panel body, and each of the lamp beads is located between two horizontally adjacent first isolation walls.
[0007] A plurality of second isolation walls are arranged in an array on the first surface of the lamp panel body, and each second isolation wall is arranged to extend laterally along the lamp panel body, and each lamp bead is located between two longitudinally adjacent second isolation walls.
[0008] Optionally, in some embodiments of this application, each of the first isolation walls is connected to another longitudinally adjacent first isolation wall, and each of the second isolation walls is connected to another laterally adjacent second isolation wall, such that a plurality of isolation grooves are formed on the first surface of the lamp panel body to place a plurality of lamp beads in a corresponding manner.
[0009] Optionally, in some embodiments of this application, the transparent isolation wall is a first transparent colloid doped with first glass microspheres, the first glass microspheres having a refractive index of 1.9 to 2.4.
[0010] Optionally, in some embodiments of this application, the particle size of the first glass microspheres is 10 μm to 30 μm; and / or,
[0011] The proportion of the first glass microspheres in the first transparent colloid is 10% to 30%.
[0012] Optionally, in some embodiments of this application, the height of the transparent partition wall is equal to the height of the LED beads; or,
[0013] The height of the transparent isolation wall is 5μm to 10μm higher than the height of the LED beads.
[0014] Optionally, in some embodiments of this application, the module light board further includes an encapsulation protective layer, which covers a plurality of the lamp beads and a plurality of the transparent isolation walls.
[0015] Optionally, in some embodiments of this application, the encapsulation protective layer is a second transparent colloid doped with second glass microspheres, the refractive index of the second glass microspheres being 1.5 to 1.6.
[0016] Optionally, in some embodiments of this application, the particle size of the second glass microspheres is 10 μm to 30 μm; and / or,
[0017] The second glass microspheres account for 5% to 10% of the second transparent colloid.
[0018] Optionally, in some embodiments of this application, the module light panel further includes a black functional film, which is attached to the surface of the encapsulation protective layer away from the main body of the light panel.
[0019] The technical solution provided in this application, through the aforementioned structural arrangement, ensures that each LED bead (i.e., each pixel) in the module's LED panel is physically isolated from each other by at least one transparent isolation wall doped with high-refractive-index particles. Because the transparent isolation wall is doped with high-refractive-index particles, it possesses high reflectivity, allowing light emitted from the sides of each LED bead to be reflected back through the corresponding transparent isolation wall. This effectively blocks optical crosstalk between the LED beads (i.e., each pixel), thereby improving the display sharpness of the display module. Furthermore, since the only physical isolation between the LED beads (i.e., each pixel) is the transparent isolation wall, which itself is transparent, it also ensures that there is no sense of separation between pixels when the display module is off, thus improving the overall visual appeal of the display module. Therefore, this technical solution effectively addresses the technical problem of existing display modules using structures that isolate optical crosstalk between pixels, which easily lead to a noticeable sense of separation when the display module is off, severely affecting the overall visual appeal of the display module. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the module light board of the display module in the embodiments of this application;
[0022] Figure 2 for Figure 1 The diagram shows a side view of the module light panel. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0025] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, the user should consider such a combination of technical solutions to be non-existent and not within the scope of protection claimed in this application.
[0026] In one embodiment, such as Figure 1 and Figure 2 As shown in the figure, this application embodiment provides a display module, which mainly includes a module lamp board 100. The module lamp board 100 includes a lamp board body 110, a plurality of lamp beads 120 and a plurality of transparent isolation walls (not shown in the figure) doped with high refractive index particles. The plurality of lamp beads 120 and the plurality of transparent isolation walls 130 are respectively arranged in an array on the first surface of the lamp board body 110, and at least one transparent isolation wall is provided around each lamp bead 120.
[0027] It is understood that the display module of this application embodiment can be used for standalone display or can be specifically applied to a display screen to form a corresponding display module by arranging several display modules in a certain manner. The display module of this application embodiment can adopt a bottom shell structure design or a bottom shell structure design. When it adopts a bottom shell structure design, in addition to the module lamp board 100, it also includes a module bottom shell (not shown), which is mounted on the second surface of the lamp board body 110. The second surface of the lamp board body 110 is opposite to the first surface of the lamp board body 110. In addition, the aforementioned lamp bead 120 can specifically be an LED chip unit, and each LED chip unit can specifically include three chips: R, G, and B. The module lamp board 100 also includes several driver ICs (not shown) disposed on the second surface of the lamp board body 110 to drive several lamp beads 120 to work, so as to realize the normal display function of the module lamp board 100.
[0028] In addition, the high refractive index particles mentioned above can be any one or more of titanium dioxide particles, barium titanate particles, cerium oxide particles, zinc selenide particles, tantalum oxide particles, and tantalum oxide particles. These particles not only have a high refractive index, but also have a certain degree of transparency. This means that even if these particles are incorporated into the transparent barrier wall, they will not have a significant impact on the transparency of the barrier wall itself, thus ensuring the transparency of the barrier wall.
[0029] In this way, the display module in this embodiment, through the above-described structural configuration, ensures that each LED bead 120 (i.e., each pixel) in the module lamp board 100 is physically isolated from each other by at least one transparent isolation wall doped with high refractive index particles. Because the transparent isolation wall is doped with high refractive index particles, it possesses high reflectivity. Therefore, light emitted from the sides of each LED bead 120 can be reflected back through the corresponding transparent isolation wall, effectively blocking light crosstalk between the LED beads 120 (i.e., each pixel) and improving the display sharpness of the display module. Simultaneously, since the only physical isolation between the LED beads 120 (i.e., each pixel) is the transparent isolation wall, and the wall itself is transparent, it also ensures that there is no sense of separation between pixels when the display module is off, thus improving the overall visual appeal of the display module.
[0030] In some examples, such as Figure 1 and Figure 2 As shown, the plurality of transparent isolation walls include a plurality of first isolation walls 131 and a plurality of second isolation walls 132. The plurality of first isolation walls 131 are arranged in an array on the first surface of the lamp panel body 110, and each first isolation wall 131 extends longitudinally along the lamp panel body 110. Each LED bead 120 is located between two horizontally adjacent first isolation walls 131. Similarly, the plurality of second isolation walls 132 are arranged in an array on the first surface of the lamp panel body 110, and each second isolation wall 132 extends laterally along the lamp panel body 110. Each LED bead 120 is located between two vertically adjacent second isolation walls 132. Thus, through this structural arrangement, the rectangular LED beads 120 can be effectively paired, ensuring that each side of each LED bead 120, arranged both longitudinally and laterally, is provided with a corresponding transparent isolation wall (first isolation wall 131 or second isolation wall 132) for effective physical isolation. This effectively prevents light crosstalk between the individual LED beads 120 (i.e., each pixel), thereby improving the display sharpness of the display module.
[0031] In some examples, such as Figure 1 and Figure 2As shown, each first isolation wall 131 is connected to another first isolation wall 131 in the longitudinal direction, and each second isolation wall 132 is connected to another second isolation wall 132 in the transverse direction, so that a plurality of isolation grooves 10 are formed on the first surface of the lamp panel body 110, for placing a plurality of lamp beads 120 in a corresponding manner. In this way, after a plurality of isolation grooves 10 are formed by connecting a plurality of first isolation walls 131 and a plurality of second isolation walls 132 in the longitudinal and transverse directions, and then placing each lamp bead 120 in the corresponding isolation groove 10, the light emitted from each side of the lamp bead 120, even if it adopts different shapes and structures, can be effectively reflected back by the respective side walls of the corresponding isolation groove 10. Therefore, through the above structural arrangement, the peripheral isolation requirements of lamp beads 120 with different shapes can be better met.
[0032] In some examples, such as Figure 1 and Figure 2 As shown, the transparent isolation wall doped with high refractive index particles is a first transparent colloid doped with first glass microspheres, the refractive index of which is 1.9 to 2.4. Thus, through this structural arrangement, the transparent isolation wall can be ensured to have higher reflectivity, effectively blocking light crosstalk between each LED bead 120 (i.e., each pixel), while also having higher transparency to ensure that there is no sense of separation between pixels when the display module is off, thereby improving the overall visual appeal of the display module.
[0033] Understandably, the glass microspheres in this example possess many excellent physical and chemical properties, including lightweight, low thermal conductivity, high strength, good chemical stability, oleophilic and hydrophobic properties, and easy dispersion in organic material systems. Glass microspheres typically have a particle size of 10–250 μm and a wall thickness of 1–2 μm, and also exhibit good flowability and high filler content. They are commonly used as fillers in reinforced unsaturated polyesters and other materials, improving the strength, rigidity, and heat distortion temperature of the products. Thus, the transparent partition wall in this example uses a first transparent colloid incorporating the first glass microspheres. Utilizing the principles of lens refraction and concave spherical reflection, this transparent partition wall produces highly reflective, strong light when illuminated by the corresponding LED bead 120, 100–200 times higher than the reflected light of common white ink, without producing glare.
[0034] In addition, the first transparent colloid in this example can specifically be a highly thixotropic epoxy colloid. That is, the transparent isolation wall in this example can specifically be a colloid formed after the highly thixotropic epoxy adhesive containing the aforementioned first glass microspheres solidifies. Therefore, the transparent isolation wall can be set on the lamp panel body 110 by dispensing adhesive to form a corresponding transparent isolation wall around each lamp bead 120. The thickness of the transparent isolation wall should be less than the gap between the corresponding two lamp beads 120.
[0035] In some examples, such as Figure 1 and Figure 2 As shown, the particle size of the first glass microspheres is 10μm to 30μm. Thus, through the above parameter design, the first glass microspheres can be ensured to have higher transparency, effectively enhancing the high reflectivity of the transparent isolation wall while minimizing its impact on the wall's transparency. This further ensures that there is no sense of separation between pixels when the display module is off, thus improving the overall visual appeal of the display module. Furthermore, the proportion of the first glass microspheres in the first transparent colloid is 10% to 30%. This parameter design ensures that the first glass microspheres are evenly distributed in a sufficient proportion within the first transparent colloid, better enhancing the high reflectivity of the transparent isolation wall. This ensures that it effectively blocks light crosstalk between the individual LED beads 120 (i.e., individual pixels) while minimizing its impact on the wall's transparency, further ensuring that there is no sense of separation between pixels when the display module is off, thus improving the overall visual appeal of the display module.
[0036] In some examples, such as Figure 1 and Figure 2 As shown, the height of the transparent isolation wall is equal to the height of the LED 120. Alternatively, the height of the transparent isolation wall is 5μm to 10μm higher than the height of the LED 120. Thus, through this structural arrangement, it can be ensured that the light emitted from the sides of each LED 120 is completely blocked by the transparent isolation wall, thereby further ensuring that the transparent isolation wall in this example effectively isolates optical crosstalk between the individual LEDs 120 (i.e., each pixel).
[0037] It is understandable that the shape and structure of the transparent partition wall in this example can be, in addition to being, [other possible]. Figure 2 In addition to the cuboid structure shown, it can also be any regular or irregular shape structure that effectively isolates the two adjacent sides of two adjacent LED beads 120.
[0038] In some examples, such as Figure 1 and Figure 2As shown, the module light panel 100 also includes an encapsulation protective layer 140, which covers a plurality of LED beads 120 and a plurality of transparent isolation walls. Thus, through the structural arrangement of the encapsulation protective layer 140, the plurality of LED beads 120 and the plurality of transparent isolation walls can be effectively encapsulated and protected. Further, the encapsulation protective layer 140 is a second transparent colloid doped with second glass microspheres, the refractive index of which is 1.5 to 1.6. It is understood that the thickness of the second transparent colloid in this example is generally 50 μm to 100 μm above the surface of the LED beads 120. Specifically, the second transparent colloid in this example is an epoxy colloid; that is, the encapsulation protective layer 140 can specifically be a colloid formed after the epoxy adhesive doped with the aforementioned second glass microspheres has solidified. Therefore, the encapsulation protective layer 140 can be formed by molding it onto the surfaces of the plurality of LED beads 120 and the plurality of transparent isolation walls using a molding mechanism. Thus, by using the structure of the second transparent colloid doped with second glass microspheres, it is possible to ensure that it has high transparency while also having a certain diffusion effect. When the display module is off, there is no sense of splitting because the transparency of the first transparent colloid is close to that of the second transparent colloid. When the display module is on, the reflected light from the first transparent colloid and the diffused light from the second transparent colloid are fully mixed, resulting in a better display effect for the display module.
[0039] In some examples, such as Figure 1 and Figure 2 As shown, the particle size of the second glass microspheres is 10μm to 30μm. Thus, by setting the above parameters, the second glass microspheres can be ensured to have higher transparency, effectively improving the light diffusion performance of the encapsulation protective layer 140. This achieves uniform light distribution in the display module while minimizing the impact on the transparency of the encapsulation protective layer 140, ensuring that the encapsulation protective layer 140 does not adversely affect the display of the LED beads 120. Furthermore, the proportion of the second glass microspheres in the second transparent colloid is 5% to 10%. Thus, by setting the above parameters, on the one hand, the problem of insufficient light diffusion effect when the proportion of the second glass microspheres in the second transparent colloid is avoided; on the other hand, the situation where the proportion of the second glass microspheres in the second transparent colloid is too high, although the light diffusion effect is enhanced, the transparency and mechanical properties of the material may be affected.
[0040] In some examples, such as Figure 1 and Figure 2As shown, the module light panel 100 also includes a black functional film 150, which is attached to the surface of the encapsulation protective layer 140 away from the light panel body 110. Thus, the black functional film 150 effectively improves the anti-glare effect of the module light panel 100. Further, the black functional film 150 includes an anti-glare layer and an adhesive layer, wherein the thickness of the anti-glare layer is 75μm to 100μm, the thickness of the adhesive layer is 50μm to 100μm, and the light transmittance of the adhesive layer is 30% to 70%, preferably 40% to 50%. Thus, by setting the above parameters, the anti-glare characteristics of the black functional film 150 can be ensured while the light transmittance of the black functional film better meets the light transmittance requirements of the module light panel 100.
[0041] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application 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. These 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 application.
Claims
1. A display module, characterized in that, The light panel includes a module light panel, which comprises a light panel body, a number of LED beads, and a number of transparent isolation walls doped with high refractive index particles. The LED beads and the transparent isolation walls are respectively arranged in an array on the first surface of the light panel body, and at least one transparent isolation wall is provided around each LED bead.
2. The display module according to claim 1, characterized in that, The aforementioned transparent partition walls include a plurality of first partition walls and a plurality of second partition walls, wherein, A plurality of the first isolation walls are arranged in an array on the first surface of the lamp panel body, and each of the first isolation walls extends longitudinally along the lamp panel body, and each of the lamp beads is located between two horizontally adjacent first isolation walls. A plurality of second isolation walls are arranged in an array on the first surface of the lamp panel body, and each second isolation wall is arranged to extend laterally along the lamp panel body, and each lamp bead is located between two longitudinally adjacent second isolation walls.
3. The display module according to claim 2, characterized in that, Each of the first isolation walls is connected to another first isolation wall that is longitudinally adjacent, and each of the second isolation walls is connected to another second isolation wall that is laterally adjacent, so that a plurality of isolation grooves are formed on the first surface of the lamp panel body to place a plurality of lamp beads in a corresponding manner.
4. The display module according to claim 1, characterized in that, The transparent isolation wall doped with high refractive index particles is a first transparent colloid doped with first glass microspheres, the first glass microspheres having a refractive index of 1.9 to 2.
4.
5. The display module according to claim 4, characterized in that, The first glass microspheres have a particle size of 10 μm to 30 μm; and / or, The proportion of the first glass microspheres in the first transparent colloid is 10% to 30%.
6. The display module according to claim 1, characterized in that, The height of the transparent partition wall is equal to the height of the LED beads; or... The height of the transparent isolation wall is 5μm to 10μm higher than the height of the LED beads.
7. The display module according to claim 1, characterized in that, The module light board also includes an encapsulation protective layer, which covers a number of the LED beads and a number of the transparent isolation walls.
8. The display module according to claim 7, characterized in that, The encapsulation protective layer is a second transparent colloid doped with second glass microspheres, the refractive index of which is 1.5 to 1.
6.
9. The display module according to claim 8, characterized in that, The second glass microspheres have a particle size of 10 μm to 30 μm; and / or, The second glass microspheres account for 5% to 10% of the second transparent colloid.
10. The display module according to claim 7, characterized in that, The module light panel also includes a black functional film, which is attached to the surface of the encapsulation protective layer away from the main body of the light panel.