WO2020187213A1 - 一种led显示屏 - Google Patents

一种led显示屏 Download PDF

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Publication number
WO2020187213A1
WO2020187213A1 PCT/CN2020/079840 CN2020079840W WO2020187213A1 WO 2020187213 A1 WO2020187213 A1 WO 2020187213A1 CN 2020079840 W CN2020079840 W CN 2020079840W WO 2020187213 A1 WO2020187213 A1 WO 2020187213A1
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WIPO (PCT)
Prior art keywords
light
display screen
led display
substrate
fixing member
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/079840
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English (en)
French (fr)
Inventor
李士杰
唐泽达
唐晓峰
王霖
胡飞
李屹
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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Publication date
Application filed by Appotronics Corp Ltd filed Critical Appotronics Corp Ltd
Publication of WO2020187213A1 publication Critical patent/WO2020187213A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes

Definitions

  • This application relates to the technical field of LED display screens, in particular to an LED display screen.
  • Colored LED lamp beads have the characteristics of high luminous brightness, and the large screen composed of dot matrix can display very high brightness (easily higher than 1000Nit), and at the same time, the display uniformity is high, and it has an excellent viewing effect than projection.
  • the color LED display has other advantages, for example, each LED lamp bead responds quickly, can also be individually controlled to turn on/off, and can be completely turned off when displaying a black field to have a high contrast.
  • the LED lamp beads have a narrow spectrum and still maintain a wide color gamut at high brightness.
  • LED large-screen displays have gradually entered the field of high-quality video projection. As the technology continues to mature, the application scenarios will continue to expand.
  • the existing large-size LED displays have high luminous intensity due to the high luminous intensity of the LED lamp beads and the light crosstalk between the LED lamp beads, which seriously affects the display effect.
  • the existing solution is to add a light-shielding frame between the LED lamp beads. Prevent pixel crosstalk between each lamp bead.
  • one way of fixing the shading frame of the LED screen is to stick it on the PCB board with adhesive. This method is not convenient for later maintenance and disassembly. Another way is to fix it with screws, but using screws to fix from the front will affect the appearance of the screen. Because of its flexibility and beauty, a new type of LED screen installation method is urgently needed.
  • This application provides an LED display screen to solve the problems of poor installation and poor display effect of the LED display screen.
  • an LED display screen which is characterized by comprising a substrate and a light-shielding frame, on which are arranged arrays of LED light-emitting units; and the light-shielding frame is arranged on
  • the exit light path of the LED light-emitting unit includes a plurality of grids distributed in an array, and a plurality of first fixing parts are provided on the side adjacent to the substrate of the grid and the substrate and the first fixing parts The corresponding area is provided with a second fixing member.
  • the first fixing member includes a fastener integrally formed with the shading frame
  • the second fixing member is a through hole corresponding to the fastener
  • the fastener is The through holes of the substrate are assembled by interference.
  • the fastener includes a first structure and a second structure, one end of the first structure is connected to the light-shielding frame, and the second structure is stacked on the other end of the first structure.
  • the first structure is one of a frustum, a cylinder, or a cone
  • the second structure is one of a frustum, a cone, or a cylinder.
  • the outer surface of the first structure is provided with an elastic body or a thread structure.
  • the first fixing member includes a plurality of integrally formed snap members
  • the second fixing member is a through hole corresponding to the snap member, and the snap member and the through hole Assemble by snap fit.
  • the first fixing member includes a plurality of first fixing holes
  • the second fixing member includes a plurality of second fixing holes
  • the first fixing holes and the second fixing holes are tightened by screws. solid.
  • the LED display screen further includes an optical film, the optical film includes one of a diffusion film, a polarizing film, or a protective film, and the optical film is fixed to the optical film by glue or a clamp.
  • the light-emitting surface of the light-shielding frame is fixed to the optical film by glue or a clamp.
  • the light-shielding frame further includes a positioning column, and the positioning column is used for positioning and assembling with the substrate.
  • the light-shielding frame includes a first grille and a second grille, and the first fixing member is disposed at the intersection of the first grille and the second grille.
  • the beneficial effect of the present application is that the first fixing member is provided on the side of the light-shielding frame facing the substrate, and the second fixing member is provided in the area corresponding to the substrate and the first fixing member.
  • the inner surface of the light-shielding frame is assembled with the substrate to further reduce Installation traces, so that when viewing the LED display from the front, the appearance of the appearance will not be affected by the installation traces.
  • FIG. 1 is a schematic structural diagram of an embodiment of the LED display screen of the present application.
  • FIG. 2 is a schematic diagram of the structure of the shading frame and the fixing member of an embodiment of the LED display screen of the present application
  • Fig. 3 is a partial enlarged schematic diagram of area III in Fig. 2;
  • FIG. 4 is a partial enlarged schematic diagram of area IV in FIG. 3;
  • Fig. 5 is a schematic diagram of the assembly process of the fixing member of an embodiment of the LED display screen of the present application.
  • Fig. 6 is a schematic structural diagram of a fixing member of an embodiment of the LED display screen of the present application.
  • FIG. 7 is another structural schematic diagram of the fixing member of an embodiment of the LED display screen of the present application.
  • FIG. 8 is another structural schematic diagram of the fixing member of an embodiment of the LED display screen of the present application.
  • FIG. 9 is another structural schematic diagram of the fixing member of an embodiment of the LED display screen of the present application.
  • FIG. 10 is another structural schematic diagram of the fixing member of an embodiment of the LED display screen of the present application.
  • Fig. 11 is a schematic diagram of the structure of the shading frame and the buckle of an embodiment of the LED display screen of the present application;
  • FIG. 12 is a schematic diagram of the assembly process of the fastener in an embodiment of the LED display screen of the present application.
  • FIG. 13 is a schematic structural diagram of another embodiment of the LED display screen of the present application.
  • FIG. 14 is a schematic diagram of the structure of the shading frame and the fixing hole of an embodiment of the LED display screen of the present application.
  • FIG. 15 is a partial enlarged schematic diagram of area XV in FIG. 14;
  • FIG. 16 is a schematic diagram of the fixing hole and screw assembly structure of an embodiment of the LED display screen of the present application.
  • first and second in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include at least one of the features.
  • a plurality of means at least two, such as two, three, etc., unless otherwise specifically defined. All directional indications (such as up, down, left, right, front, back%) in the embodiments of this application are only used to explain the relative positional relationship between the elements in a certain posture (as shown in the drawings) If the specific posture changes, the directional indication will change accordingly.
  • the terms “installed”, “connected”, “connected”, and “installed on” should be understood in a broad sense, unless expressly stipulated and limited otherwise.
  • they can be
  • the fixed connection can also be a detachable connection or an integral connection; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be a communication between two components.
  • the specific meanings of the above-mentioned terms in this application can be understood according to the specific circumstances.
  • the LED display screen 100 includes a substrate 30, a light-shielding frame 10 and an optical film 20.
  • the substrate 30 is provided with LED light-emitting units distributed in an array
  • the optical film 20 is fixed on a surface of the light-shielding frame 10
  • the light-shielding frame 10 is arranged on the light emitting path of the LED light-emitting unit.
  • the light-shielding frame 10 includes a plurality of grids 11 distributed in an array. To accommodate the corresponding LED lighting unit.
  • the light-shielding frame 10 is located between the substrate 30 and the optical film 20, and the LED light-emitting units distributed in an array on the substrate 30 are accommodated in the grids 11 of the light-shielding frame 10, so that each grid 11 contains LED light-emitting units. Form a pixel of the LED display screen.
  • a plurality of first fixing members are provided on the side adjacent to the base plate 30 of the grid 11, and the first fixing members may be fasteners, fasteners, or fixing holes.
  • the area of the base plate 30 corresponding to the first fixing member is provided with a second fixing member, and the second fixing member may be a through fixing hole or a fastener.
  • the first fixing member and the second fixing member cooperate to fix the light shielding frame 10 and the base plate 30.
  • the substrate 30 may be a metal plate or a printed circuit board (Printed Circuit Board), etc., and an LED light emitting unit may be provided on the substrate 30 through surface mounting or COB (Chips on Board) packaging.
  • the multiple grids 11 distributed in the array of the light-shielding frame 10 are used for accommodating the LED light-emitting units, so that the array-distributed LED light-emitting units can be separated to prevent optical crosstalk between the LED light-emitting units.
  • the material of the light-shielding frame 10 may be one or more of plastic, plastic, metal, or metal alloy.
  • the shape of the light-shielding frame 10 may be rectangular, square, circular, etc., which can be specifically set according to actual conditions, and is not limited here.
  • the optical film 20 may be one of a diffusion film, a polarizing film, or a protective film.
  • the fixing method of the optical film 20 may be bonding, clamping, or using a clamp, which is not limited here.
  • the other surface of the light-shielding frame 10 is fixed on the substrate 30 to separate the LED light-emitting units distributed in the array. Therefore, the optical crosstalk between the LED light-emitting units on the substrate 30 can be reduced, and the display effect of the LED display screen 100 can be improved through the optical film 20.
  • the method of assembling the inner surface of the shading frame 10 with the substrate 30 further reduces the installation traces of the assembly, so that when the LED display screen 100 is viewed from the front, the appearance of the appearance is not affected by the installation traces.
  • the thickness of the shading frame 10 is 0.1-10 mm. It can be understood that when the substrate 30, the light-shielding frame 10 and the optical film 20 are fixed, the distance between the optical film 20 and the substrate 30 is the thickness of the light-shielding frame 10, thereby leaving space for accommodating the LED light-emitting unit. It is avoided that the optical film 20 is pressed against the LED light-emitting unit, causing damage to the LED light-emitting unit.
  • the light shielding frame 10 may include a first grid 12 and a second grid 13.
  • the first grid 12 and the second grid 13 are staggered to form a plurality of grids 11 distributed in an array on the light shielding frame 10.
  • the space of each grid 11 can accommodate one or two or three LED light-emitting units, so that each space corresponds to one pixel of the LED display screen 100.
  • the shape and number of the grid 11 are not limited here. For example, it may be a seamlessly spliced quadrilateral or a seamlessly spliced hexagon, and the number may be 64, 81, or 255.
  • the thickness of the first grid 12 and the second grid 13 of the light shielding frame 10 are the same. That is, the width W1 of the first grid 12 and the width W2 of the second grid 13 are equal, and the thickness value may be 0.2-5 mm.
  • the first fixing member may include a fastener 40 integrally formed with the light-shielding frame 10, and the second fixing member is a through hole corresponding to the fastener 40, and the fastener 40 is connected to the base plate.
  • the through holes of 30 are assembled by interference.
  • the fastener 40 may be a polyhedron (such as a rectangular parallelepiped, etc.) or a rotating body (such as a truncated cone or a cone) composed of elastic materials such as plastic or plastic.
  • the number of fasteners 40 may be 4, 5, 9, etc.
  • the plurality of fasteners 40 may be evenly distributed in the center, the four corners, and the center positions of the four sides of the light-shielding frame 10 and face one side of the substrate 30.
  • the fastener 40 may be arranged on the first grid 12 or the second grid 13 or at the intersection of the first grid 12 and the second grid 13, preferably at the intersection.
  • the fastener 40 may include a first structure 41 and a second structure 42. One end of the first structure 41 is connected to the light shielding frame 10, and the second structure 42 is stacked on the other end of the first structure 41.
  • the first structure 41 is one of a frustum, a cylinder, or a cone
  • the second structure 42 is one of a frustum, a cone, or a cylinder.
  • the fastener 40 may be integrally formed and the first structure 41 located at the intersection of the first grid 12 and the second grid 13 is a combined structure of a cylinder and the second structure 42 is a truncated cone.
  • the height h1 of the cylinder can be 0.1-3 mm.
  • the diameter D1 of the cylinder may be 0.2-5 mm.
  • the diameter of the cylinder may be greater than the width W1 of the first grid 12 or the width W2 of the second grid 13.
  • the height h2 of the truncated cone can be less than or equal to the height h1 of the cylinder, and the diameter D2 of the truncated cone can be less than the diameter D1 of the cylinder.
  • the second fixing member in the corresponding area on the substrate 30 may be a through hole, the diameter of the through hole may be D3, and the second structure 42 is that the diameter D2 of the truncated cone is smaller than the through hole.
  • the diameter D3 of the hole facilitates the insertion of the fastener 40 into the through hole. Since the tolerance zone of the cylinder of the first structure 41 is larger than the tolerance zone of the through hole, and the fastener 40 is usually made of elastic materials such as plastics, plastics, etc., a slight force during installation can press the fastener 40 into the through hole of the substrate 30. In the hole, the elastic deformation of the fastener 40 will increase the friction force between the fastener 40 and the substrate 30, so that the light shielding frame 10 can be fixed on the substrate 30. The fastener 40 can be completely inserted into the through hole of the substrate 30, so that the fastener 40 can prevent the fastener 40 from affecting the light shielding effect of the light shielding frame 10.
  • the second fixing member provided on the base plate 30 is an integrally formed fastener 40
  • the first fixing member provided on the shading frame 10 is a fixing hole, and the two are fixed by interference fit.
  • the fastener 40 may be a combination of a cylinder 41a and a cone 42a.
  • the height and diameter of the cylinder 41a and the cone 42a may be similar to those of the previous embodiments, and will not be repeated here. Since the cone 42a will be provided on the cylinder 41a, it is advantageous for the fastener 40 to penetrate into the through hole of the base plate 30, and the assembly efficiency of the light shielding frame 10 and the base plate 30 is improved.
  • the fastener 40 may be a stepped body formed by the combination of the structure 41b and the structure 42b.
  • the structure 41b and the structure 42b may both be polyhedrons (such as cuboid) or rotating bodies (such as cylinders).
  • the heights of the structures 41b and 42b Similar to the previous embodiment, the radial width of the structure 41b is greater than the radial width of the structure 42b.
  • the outer surface of the first structure 41 may be provided with an elastic body or a thread structure.
  • the outer surface of the first structure 41 c of the fastener 40 may be provided with a convex elastic body 43 to further increase the friction.
  • the elastic body 43 may be made of the same material as the fastener 40, for example, rubber or elastic plastic.
  • the fastener 40 can be a combination of a cylinder 41c and a truncated cone 42c.
  • the outer surface of the cylinder 41c is circumferentially provided with a convex elastic body 43, so that when the cylinder 41c fits with the hole When fixing, the elastic body 43 further enhances the friction between the fastener 40 and the inner wall of the hole of the base plate 30, thereby making the assembly and fixing between the light shielding frame 10 and the base plate 30 stronger.
  • the fastener 40 may be an integral round table 41d. That is, the second structure 42 is removed and the first structure 41 is directly integrated. At this time, the height of the round table 41d is the sum of the height of the cylinder 41 and the round table 42 in the previous embodiment.
  • a convex elastic body 43 is provided in the circumferential direction of the outer surface of the end of the round table 42.
  • the elastic body 43 can further enhance the friction between the first fixing member and the inner wall of the through hole of the substrate 30, reduce the risk of the shading frame 10 falling off the substrate 30, and save The removal of the cylindrical part makes the production of the fastener 40 easier and saves the production cost.
  • the fastener 40 can also be a separate cylindrical structure (not shown in the figure).
  • the height of the cylinder is the sum of the heights of the cylinder 41 and the truncated cone 42 in the previous embodiment, and is arranged circumferentially on the outer surface of the end of the cylinder. Protruding elastic body (not shown in the figure) to enhance the friction when it is fixed.
  • the fastener 40 may be a combination of a cylinder 41e and a truncated cone 42e.
  • the outer surface of the cylinder 41c may be provided with grooves to form a threaded structure.
  • Corresponding threaded holes can be provided on the base plate 30. It can be understood that the fastener 40 and the base plate 30 are fixed by thread matching, so that the fixing of the fastener 40 and the base plate 30 is stronger.
  • the first fixing member of the light-shielding frame 10 may include an integrally formed fastener 50, and the fastener 50 may be composed of plastic or elastic materials such as plastic.
  • the second fixing member is a through hole corresponding to the buckle 50, and the buckle 50 and the through hole are assembled by a snap fit so that the light shielding frame 10 is fixed to the substrate 30.
  • the plurality of fasteners 50 can be evenly distributed in the center, the four corners and the center positions of the four sides of the light-shielding frame 10 and face one side of the substrate 30.
  • the buckle 50 may be arranged on the first grille 12 or the second grille 13 or at the intersection of the first grille 12 and the second grille 13, preferably at the intersection.
  • the buckle 50 may include a support portion 51 and a buckle portion 52 formed integrally, and the bottom diameter of the support portion 51 may be 0.2-8 mm.
  • the buckle part 52 may be a hollow circular truncated cone structure, the bottom diameter of the truncated cone is larger than the bottom diameter of the support part 51, and the top diameter of the truncated cone can be between the bottom diameter of the support part 51 and the bottom diameter of itself, so as to facilitate the insertion of the buckle 50.
  • the base plate 30 may be provided with a through hole matching the fastener 50.
  • the diameter of the bottom of the truncated cone of the fastener 52 is larger than The diameter of the through hole, when the buckle 50 receives an external force, the diameter of the bottom of the buckle part 52 is smaller than the diameter of the through hole.
  • the buckle part 52 completely penetrates the through hole, due to its own elasticity, the buckle part 52 The diameter is greater than the diameter of the through hole.
  • the height of the support portion 51 may be the same as the thickness of the substrate 30, so that the fastener 50 is firmly clamped in the through hole, and the fastener 50 is prevented from loosening.
  • the first fixing member includes a plurality of first fixing holes 60
  • the second fixing member may include a plurality of second fixing holes.
  • 60 and the second fixing hole are fastened by screws 61 (for example, self-tapping screws, etc.).
  • the first fixing holes 60 may be evenly distributed in the center, the four corners and the center positions of the four sides of the light-shielding frame 10 and face one side of the substrate 30.
  • the first fixing hole 60 may be provided on the first grill 12 or the second grill 13 or at the intersection of the first grill 12 and the second grill 13, preferably at the intersection.
  • the first fixing hole 60 can be used to receive the screw 61 and screw it to fix the light-shielding frame 10 and the substrate 30.
  • the screw 61 When assembling, the screw 61 can pass through the second fixing hole of the substrate 30 from the side of the substrate 30 away from the light-shielding frame 10 to the first fixing hole 60 on the light-shielding frame 10, so as to realize the fixation.
  • the above method can prevent the screw 61 from being exposed on the surface of the light-shielding frame 10, thereby ensuring the uniformity of the appearance of the light-shielding frame 10, and avoiding the screw from affecting the display of the LED display screen 100.
  • screws can also be used to pass through the second fixing hole of the substrate 30 from the side of the substrate 30 away from the light-shielding frame 10 to the first fixing hole 60 on the light-shielding frame 10, and fix it by screwing. .
  • the optical film 20 may be fixed to the light-emitting surface of the light-shielding frame 10 by glue or a clamp.
  • the choice of the optical film 20 can be a diffusion film that diffuses the angle of the emitted light to increase the filling rate of the LED display 100, or a polarizing film for realizing 3D display. It is understandable that, in one embodiment, the optical film 20 may also be a protective film for waterproofing and dustproofing the LED display screen, and the material may be high polymer or special glass.
  • the light-shielding frame 10 can be fixed on the substrate 30 first, and then the optical film 20 is fixed on the light-emitting surface of the light-shielding frame 10 by glue or a clamping member, so as to prevent the optical film 20 from being damaged.
  • the optical film 20 can also prevent dust, water, etc. from entering the light-shielding frame 10, and improve the packaging tightness of the LED display screen 100.
  • the light-shielding frame 10 may also be provided with positioning pillars (not shown in the figure), and the positioning pillars may be provided on the first grille 12 or the second grille 13, or the first grille 12 and the second grille The intersection of grille 13.
  • the positioning post can be used for positioning and assembling with the substrate 30.
  • a positioning hole (not shown in the figure) matching the positioning post can be provided on the base plate 30.
  • the positioning post and the positioning hole can play a positioning function, and improve the fixed installation. effectiveness.
  • positioning posts may also be provided on the substrate 30 and positioning holes may be provided on the light shielding frame 10.
  • the inner walls of the first grid 12 and the second grid 13 of the light-shielding frame 10 are coated with a light-shielding layer, so that an opaque cavity is formed in each, so that light leakage between the light-shielding frames 10 can be avoided. Therefore, when the light-shielding frame 10 contains the LED light-emitting units, it is further ensured that the light of the LED light-emitting units in the adjacent grids 11 does not crosstalk, and light is emitted only from the side of the light-shielding frame 10 where the optical film 20 is provided. The brightness and uniformity of the light are improved to enhance the display effect of the LED display 100.
  • the above-mentioned structures do not represent all the components of the LED display screen 100, and the LED display screen 100 may also be provided with other components to complete its functions, such as drive components or power supply components.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Led Device Packages (AREA)

Abstract

本申请公开了一种LED显示屏，其特征在于，包括基板和遮光架，所述基板上设置有阵列分布的LED发光单元；遮光架，其设置在所述LED发光单元的出射光路上，包括阵列分布的多个栅格，所述栅格与所述基板相邻一侧设置有多个第一固定件，所述基板与所述第一固定件对应的区域设置第二固定件。在遮光架的朝向基板的一面设置第一固定件，在基板与第一固定件对应的区域设置第二固定件，通过遮光架内侧表面与基板组装的方式，进一步减少安装痕迹，使得在正面观看LED显示屏时，不会因安装痕迹影响外观的美观。

Description

一种LED显示屏 技术领域
本申请涉及LED显示屏技术领域，特别是涉及一种LED显示屏。
背景技术
彩色LED灯珠具有发光亮度高的特点，其点阵组成的大屏幕可以显示很高的亮度(轻松高于1000Nit)，同时显示均匀性高，拥有比投影优异的观影效果。彩色LED显示还有其他优点，例如每个LED灯珠响应很快，还可以被单独控制亮/灭，在显示黑场时可以完全关闭从而拥有很高的对比度。LED灯珠光谱窄，在高亮度时依然保持着宽广的色域。LED大屏幕显示已经逐渐进入高质量视频放映领域，随着技术的不断成熟，应用场景会不断扩大。
现有的LED大尺寸显示由于LED灯珠的发光强度很高，而且各LED灯珠之间存在光线串扰，严重影响显示效果，现有的解决方案是在LED灯珠之间增加遮光架，以防止各灯珠之间的像素串扰。目前LED屏幕的遮光架一种固定方式是通过胶粘剂粘贴在PCB板上，此种方式不便于后期维护拆机，另外一种方式是通过螺丝固定，但使用螺丝从正面固定又影响屏幕外观的一致性和美观，因此亟需一种新型的LED屏幕安装方式。
实用新型内容
本申请提供一种LED显示屏，用以解决LED显示屏安装不良及显示效果不好的问题。
为解决上述技术问题，本申请采用的一个技术方案是：一种LED显示屏，其特征在于，包括基板和遮光架，所述基板上设置有阵列分布的LED发光单元；遮光架，其设置在所述LED发光单元的出射光路上，包括阵列分布的多个栅格，所述栅格与所述基板相邻一侧设置有多个第一固定件，所述基板与所述第一固定件对应的区域设置第二固定件。
在一实施方式中，所述第一固定件包括与所述遮光架一体成型的紧固件，所述第二固定件为与所述紧固件对应的贯穿孔，所述紧固件与所述基板的贯穿孔通过过盈方式组装。
在一实施方式中，所述紧固件包括第一结构和第二结构，所述第一结构的一端与所述遮光架连接，所述第二结构堆叠设置于所述第一结构另外一端。
在一实施方式中，所述第一结构为圆台体、圆柱体或圆锥体中的一种，所述第二结构为圆台体、圆锥体或圆柱体中的一种。
在一实施方式中，所述第一结构的外表面设置有弹性体或螺纹结构。
在一实施方式中，所述第一固定件包括多个一体成型的卡扣件，所述第二固定件为与所述卡扣件对应的贯穿孔，所述卡扣件与所述贯穿孔通过卡扣配合方式组装。
在一实施方式中，所述第一固定件包括多个第一固定孔，所述第二固定件包括多个第二固定孔，所述第一固定孔和所述第二固定孔通过螺丝紧固。
在一实施方式中，所述LED显示屏还包括光学膜片，所述光学膜片包括扩散膜、偏振膜或保护膜中的一种，及所述光学膜片通过胶水或者 夹持件固定于所述遮光架的出光面。
在一实施方式中，所述遮光架还包括定位柱，所述定位柱用于与所述基板进行定位装配。
在一实施方式中，所述遮光架包括第一格栅和第二格栅，所述第一固定件设置于所述第一格栅和所述第二格栅的交汇区。
本申请的有益效果是：在遮光架的朝向基板的一面设置第一固定件，在基板与第一固定件对应的区域设置第二固定件，通过遮光架内侧表面与基板组装的方式，进一步减少安装痕迹，使得在正面观看LED显示屏时，不会因安装痕迹影响外观的美观。
附图说明
图1是本申请的LED显示屏一实施例的结构示意图；
图2是本申请的LED显示屏一实施例的遮光架及固定件的结构示意图；
图3是图2中区域III的局部放大示意图；
图4是图3中区域IV的局部放大示意图；
图5是本申请的LED显示屏一实施例固定件装配过程示意图；
图6是本申请的LED显示屏一实施例的固定件的结构示意图；
图7是本申请的LED显示屏一实施例的固定件的另一结构示意图；
图8是本申请的LED显示屏一实施例的固定件的另一结构示意图；
图9是本申请的LED显示屏一实施例的固定件的另一结构示意图；
图10是本申请的LED显示屏一实施例的固定件的又一结构示意图；
图11是本申请的LED显示屏一实施例的遮光架及卡扣件的结构示 意图；
图12是本申请的LED显示屏一实施例卡扣件装配过程示意图；
图13是本申请的LED显示屏另一实施例的结构示意图；
图14是本申请的LED显示屏一实施例的遮光架及固定孔的结构示意图；
图15是图14中区域XV的局部放大示意图；
图16是本申请的LED显示屏一实施例的固定孔及螺丝装配结构示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请中的术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。本申请实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各元件之间的相对位置关系、运动情况等，如果该特定姿态发生改变 时，则该方向性指示也相应地随之改变。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或元件的过程、方法、系统、产品或设备，没有限定于已列出的步骤或元件，而是可选地还包括没有列出的步骤或元件，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或元件。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“设置在……上”应做广义理解，例如，可以是固定连接，也可以是可拆卸地连接，或者一体地连接；可以是机械连接；可以是直接连接，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以视具体情况理解上述术语在本申请中的具体含义。
参阅图1，图1是本申请LED显示屏一实施例的结构示意图。该LED显示屏100包括：基板30、遮光架10和光学膜片20。
基板30上设置有阵列分布的LED发光单元，光学膜片20固定于遮光架10的一表面，遮光架10设置在LED发光单元的出射光路上，遮光架10包括阵列分布的多个栅格11以容纳相应的LED发光单元。也就是说，遮光架10位于基板30和光学膜片20之间，基板30上阵列分布的LED发光单元容纳于遮光架10的栅格11中，使得每个栅格11容纳有LED发光单元从而形成LED显示屏的一个像素点。栅格11与基板30相邻一侧设置有多个第一固定件，第一固定件可以是紧固件或者卡扣件或者固定孔等。基板30与第一固定件对应的区域设置第二固定件，第二固定件可以是贯穿固定孔或者紧固件等。第一固定件和第二固定件相 配合以将遮光架10和基板30固定。基板30可以是金属板或者PCB板(Printed Circuit Board，印制电路板)等，基板30上可通过表面贴装或COB(Chips on Board，板上芯片)封装等设置LED发光单元。遮光架10的阵列分布的多个栅格11用于容纳LED发光单元，从而可以将阵列分布的LED发光单元分隔开，防止LED发光单元之间的光学串扰。遮光架10的材料可以是塑料、塑胶、金属或者金属合金等中的一个或多个。遮光架10的外形可以是矩形、正方形或者圆形等，具体可根据实际情况设定，在此不做限定。光学膜片20可以是扩散膜、偏振膜或保护膜中的一种，光学膜片20固定方式可以是粘接、卡接或者使用夹持件等，在此不做限定。
通过在遮光架10的一表面固定有光学膜片20，遮光架10的另一表面固定在基板30上以将阵列分布的LED发光单元分隔开。从而能够降低基板30上LED发光单元之间的光学串扰，透过光学膜片20能够提升LED显示屏100的显示效果。并且在遮光架10内侧表面与基板30组装的方式，进一步减少组装的安装痕迹，使得在正面观看LED显示屏100时，不会因安装痕迹影响外观的美观。
可选地，参阅图2，遮光架10的厚度为0.1-10毫米。可以理解，当基板30、遮光架10和光学膜片20固定好时，光学膜片20和基板30之间的距离即为遮光架10的厚度，从而留有用于容置LED发光单元的空间。避免光学膜片20压到LED发光单元导致LED发光单元损坏。
参阅图3，遮光架10可包括第一格栅12和第二格栅13。第一格栅12和第二格栅13相互交错形成遮光架10上阵列分布的多个栅格11。 其中，每个栅格11的空间可以容置一个或者两个或者三个LED发光单元，使得每个空间对应LED显示屏100的一个像素点。栅格11的外形和数量在此不做限定，例如可以是无缝拼接的四边形或者无缝拼接的六边形等，数量可以是64、81或者255等。遮光架10的第一格栅12和第二格栅13的厚度相同。也即，第一格栅12的宽度W1、第二格栅13的宽度W2相等，厚度数值可为0.2-5毫米。
可选地，结合图4和图5，第一固定件可包括与遮光架10一体成型的紧固件40，第二固定件为与紧固件40对应的贯穿孔，紧固件40与基板30的贯穿孔通过过盈方式组装。紧固件40可以是由塑料或者塑胶等弹性材料组成的多面体(例如长方体等)或者旋转体(例如圆台或者圆锥等)。紧固件40的数量可以是4个、5个或者9个等。多个紧固件40可均匀分布在遮光架10的中心、四角以及四边的中心位置且朝向基板30的一侧。具体的，紧固件40可设置在第一格栅12上或者第二格栅13上或者第一格栅12与第二格栅13的交汇处，优选设置在交汇处。
继续参阅图4，紧固件40可包括第一结构41和第二结构42，第一结构41的一端与遮光架10连接，第二结构42堆叠设置于第一结构41另外一端。可选地，第一结构41为圆台体、圆柱体或圆锥体中的一种，第二结构42为圆台体、圆锥体或圆柱体中的一种。例如，紧固件40可为一体成型的且位于第一格栅12与第二格栅13的交汇处的第一结构41为圆柱和第二结构42为圆台的组合结构。其中圆柱的高度h1可为0.1-3毫米。圆柱的直径D1可为0.2-5毫米。圆柱的直径可以大于第一格栅12宽度W1或者第二格栅13宽度W2。圆台的高度h2可以小于或等于 圆柱的高度h1，圆台直径D2可小于圆柱的直径D1。结合图5中的(a)和(b)所示，基板30上对应区域的第二固定件可为贯穿孔，该贯穿孔的直径可为D3，第二结构42为圆台的直径D2小于贯穿孔的直径D3，从而便于引导紧固件40插入贯穿孔内。由于第一结构41的圆柱的公差带大于贯穿孔的公差带，而紧固件40通常由塑料、塑胶等弹性材料制作，安装时稍作用力则可以把紧固件40压入基板30的贯穿孔中，紧固件40的弹性形变会增大其与基板30的摩擦力，从而可以固定遮光架10在基板30上。紧固件40可完全插入基板30的贯穿孔中，从而可以避免紧固件40影响遮光架10的遮光效果。在其它实施例中，在基板30上设置的第二固定件为一体成型的紧固件40，在遮光架10上设置的第一固定件为固定孔，两者通过过盈配合实现固定。
在一些实施例中，参阅图6，紧固件40可为圆柱41a和圆锥42a组合体，圆柱41a和圆锥42a的高度和直径可和前面实施例相类似，此处不再赘述。由于将在圆柱41a上设置圆锥42a，从而有利于紧固件40穿进基板30的贯穿孔内，提升遮光架10与基板30的装配效率。参阅图7，紧固件40可为结构41b和结构42b组合而成的台阶体，结构41b和结构42b可都为多面体(例如长方体)或者旋转体(例如圆柱)，结构41b和结构42b的高度和前面实施例相类似，结构41b的径向宽度大于结构42b的径向宽度。
可选地，第一结构41的外表面可设置有弹性体或螺纹结构。参阅图8，紧固件40的第一结构41c外表面可设有凸起的弹性体43以进一步增大摩擦力。弹性体43可与紧固件40的材料相同，例如可是橡胶或 者弹性塑料等。紧固件40可为圆柱41c和圆台42c的组合，与前面实施例不同的是，在本实施例中，圆柱41c的外表面周向设置有凸起弹性体43，从而当圆柱41c与孔配合固定时，弹性体43进一步增强紧固件40与基板30孔内壁之间的摩擦力，从而使得遮光架10与基板30之间的装配固定更加牢固。参阅图9，紧固件40可为整体的圆台41d。也即去掉了第二结构42而直接是整体的第一结构41，此时圆台41d的高度为前面实施例中圆柱41和圆台42的高度之和。并且在圆台42的末端外表面周向设置有凸起的弹性体43。当圆台41d与基板30的贯穿孔配合固定时，弹性体43可进一步增强第一固定件和基板30的贯穿孔内壁之间的摩擦力，降低遮光架10从基板30上脱落的风险，并且省去了圆柱部分，使得紧固件40的制作更加简单，节省了制作成本。当然，紧固件40也可以是单独的圆柱结构(图未示出)，此时圆柱的高度为前面实施例中圆柱41和圆台42的高度之和，并在圆柱的末端外表面周向设置凸起的弹性体(图未示出)以增强其固定时的摩擦力。
可选地，参阅图10，紧固件40可为圆柱41e和圆台42e的组合。在本实施例中，圆柱41c的外表面可设置凹槽以形成螺纹结构。在基板30上可设置相对应的螺纹孔。可以理解，紧固件40与基板30之间通过螺纹匹配固定，从而使得紧固件40与基板30的固定更加牢固。
在一些实施例中，参阅图11，遮光架10的第一固定件可包括一体成型的卡扣件50，卡扣件50可以是由塑料或者塑胶等弹性材料组成。第二固定件为与卡扣件50对应的贯穿孔，卡扣件50与贯穿孔通过卡扣配合方式组装使得遮光架10与基板30相固定。多个卡扣件50可均匀 分布在遮光架10的中心、四角以及四边的中心位置且朝向基板30的一侧。具体的，卡扣件50可设置在第一格栅12上或者第二格栅13上或者第一格栅12与第二格栅13的交汇处，优选设置在交汇处。卡扣件50可包括一体成型的支撑部51和卡扣部52，支撑部51的底部直径可为0.2-8毫米。卡扣部52可为中空圆台结构，圆台底部直径大于支撑部51底部直径，圆台顶部直径可介于支撑部51底部直径和自身底部直径之间，从而便于引导卡扣件50的插入。继续参阅图12中的(a)和(b)，基板30上可开设有与卡扣件50相匹配的贯穿孔，在卡扣件50不受外力情况下，卡扣部52圆台底部直径大于贯穿孔的直径，在卡扣件50受外力时，卡扣部52圆台底部直径小于贯穿孔的直径，当卡扣部52完全穿过贯穿孔后，由于其自身的弹性，卡扣部52的直径又大于贯穿孔的直径，此时，卡扣件50卡扣在基板30背离遮光架10的一侧。支撑部51的高度可与基板30的厚度相同，从而使得卡扣件50牢牢卡在贯穿孔中，避免卡扣件50发生松动。
在另一些实施例中，参阅图13、图14、图15和图16，第一固定件包括多个第一固定孔60，第二固定件可包括多个第二固定孔，第一固定孔60和第二固定孔通过螺丝61(例如可以是自攻螺丝等)紧固。第一固定孔60可均匀分布在遮光架10的中心、四角以及四边的中心位置且朝向基板30的一侧。具体的，第一固定孔60可设置在第一格栅12上或者第二格栅13上或者第一格栅12与第二格栅13的交汇处，优选设置在交汇处。第一固定孔60可用于接收螺丝61并旋以将遮光架10与基板30相固定。装配时，螺丝61可从基板30背离遮光架10的一侧穿 过基板30的第二固定孔至遮光架10上的第一固定孔60中，从而实现固定，装配成功后的部分附图可参阅图16。上述方式可以避免螺丝61裸露在遮光架10的表面，从而可以确保遮光架10的外观一致性，避免螺丝对LED显示屏100的显示造成影响。当然也可以使用其它类型的螺丝(栓)，从基板30背离遮光架10的一侧穿过基板30的第二固定孔至遮光架10上的第一固定孔60中，通过螺纹配合以实现固定。
可选地，光学膜片20可通过胶水或者夹持件固定于遮光架10的出光面。光学膜片20的选择，可以为出射光角度进行扩散的扩散膜，以提升LED显示屏100的填充率，或用于实现3D显示的偏振膜。可以理解的是，在一实施方式中，光学膜片20也可以是对LED显示屏进行防水防尘的保护膜等，其材料可以是高聚物或者特制玻璃等。在装配时，可以先将遮光架10固定在基板30上，然后通过胶水或者夹持件将光学膜片20固定在遮光架10的出光面，从而避免光学膜片20受损。光学膜片20还可以防止灰尘和水等进入遮光架10内，提升LED显示屏100的封装严密性。
在一些实施例中，遮光架10上还可设有定位柱(图未示出)，定位柱可设置在第一格栅12上或者第二格栅13上或者第一格栅12与第二格栅13的交汇处。定位柱可用于与基板30进行定位装配。其中，在基板30上可设与定位柱相匹配的定位孔(图未示出)，当遮光架10固定安装在基板30上时，定位柱与定位孔可以起到定位作用，提升固定安装的效率。当然，也可在基板30上设置定位柱，在遮光架10上设置定位孔。
可选地，遮光架10第一格栅12和第二格栅13的内壁涂有遮光层，以使得每个内形成不透光的腔室，从而可以避免遮光架10的之间出现漏光。因此，当遮光架10内容置LED发光单元时，进一步确保相邻栅格11内的LED发光单元的光不发生串扰，而只从遮光架10设有光学膜片20的一侧进行出光，进一步提高光线的亮度和均匀性，以提升LED显示屏100的显示效果。
应当理解，上述各项结构并不代表LED显示屏100的所有部件，该LED显示屏100还可以设置有为完成其功能的其它零部件，例如驱动组件或电源组件等。
以上所述仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (10)

  1. 一种LED显示屏，其特征在于，包括基板和遮光架，所述基板上设置有阵列分布的LED发光单元；
    遮光架，其设置在所述LED发光单元的出射光路上，包括阵列分布的多个栅格，所述栅格与所述基板相邻一侧设置有多个第一固定件，所述基板与所述第一固定件对应的区域设置第二固定件。
  2. 根据权利要求1所述LED显示屏，其特征在于，所述第一固定件包括与所述遮光架一体成型的紧固件，所述第二固定件为与所述紧固件对应的贯穿孔，所述紧固件与所述基板的贯穿孔通过过盈方式组装。
  3. 根据权利要求2所述LED显示屏，其特征在于，所述紧固件包括第一结构和第二结构，所述第一结构的一端与所述遮光架连接，所述第二结构堆叠设置于所述第一结构另外一端。
  4. 根据权利要求3所述LED显示屏，其特征在于，所述第一结构为圆台体、圆柱体或圆锥体中的一种，所述第二结构为圆台体、圆锥体或圆柱体中的一种。
  5. 根据权利要求4所述LED显示屏，其特征在于，所述第一结构的外表面设置有弹性体或螺纹结构。
  6. 根据权利要求1所述LED显示屏，其特征在于，所述第一固定件包括多个一体成型的卡扣件，所述第二固定件为与所述卡扣件对应的贯穿孔，所述卡扣件与所述贯穿孔通过卡扣配合方式组装。
  7. 根据权利要求1所述LED显示屏，其特征在于，所述第一固定 件包括多个第一固定孔，所述第二固定件包括多个第二固定孔，所述第一固定孔和所述第二固定孔通过螺丝紧固。
  8. 根据权利要求1所述LED显示屏，其特征在于，还包括光学膜片，所述光学膜片包括扩散膜、偏振膜或保护膜中的一种，及所述光学膜片通过胶水或者夹持件固定于所述遮光架的出光面。
  9. 根据权利要求1所述LED显示屏，其特征在于，所述遮光架还包括定位柱，所述定位柱用于与所述基板进行定位装配。
  10. 根据权利要求1所述LED显示屏，其特征在于，所述遮光架包括第一格栅和第二格栅，所述第一固定件设置于所述第一格栅和所述第二格栅的交汇区。
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WO2021148603A1 (en) * 2020-01-22 2021-07-29 MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. A semiconductor photomultiplier module comprising a stacked configuration of a sensor chip and electronic readout chips
CN210984093U (zh) * 2020-03-26 2020-07-10 京东方科技集团股份有限公司 一种支撑片组件及用于安装支撑片的装置
CN111785183A (zh) * 2020-07-29 2020-10-16 杭州美卡乐光电有限公司 Led显示模组与制作方法、led显示屏与制作方法
CN112133208A (zh) * 2020-07-29 2020-12-25 杭州美卡乐光电有限公司 Led显示模组与制作方法、led显示屏与制作方法
CN112349214A (zh) * 2020-10-27 2021-02-09 合肥鑫晟光电科技有限公司 一种微led面板、其制作方法及显示装置

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