CN209804170U

CN209804170U - LED display screen

Info

Publication number: CN209804170U
Application number: CN201920355128.8U
Authority: CN
Inventors: 李士杰; 唐泽达; 唐晓峰; 王霖; 胡飞; 李屹
Original assignee: Shenzhen Appotronics Technology Co Ltd
Current assignee: Shenzhen Appotronics Corp Ltd; Shenzhen Appotronics Technology Co Ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2019-12-17
Anticipated expiration: 2029-03-19
Also published as: WO2020187213A1

Abstract

The application discloses an LED display screen, which is characterized by comprising a substrate and a shading frame, wherein LED light-emitting units distributed in an array manner are arranged on the substrate; the shading frame is arranged on an emergent light path of the LED light-emitting unit and comprises a plurality of grids distributed in an array mode, a plurality of first fixing pieces are arranged on one side, adjacent to the base plate, of the grids, and second fixing pieces are arranged in the area, corresponding to the first fixing pieces, of the base plate. The first fixing piece is arranged on the side, facing the base plate, of the shading frame, the second fixing piece is arranged in the area, corresponding to the first fixing piece, of the base plate, installation marks are further reduced through the mode that the inner side surface of the shading frame is assembled with the base plate, and therefore when the LED display screen is watched on the front side, the attractiveness of the appearance cannot be affected due to the installation marks.

Description

LED display screen

Technical Field

The application relates to the technical field of LED display screens, in particular to an LED display screen.

Background

The color LED lamp bead has the characteristic of high brightness, a large screen formed by the dot matrix can display very high brightness (easily higher than 1000Nit), and meanwhile, the display uniformity is high, and the color LED lamp bead has an excellent film viewing effect compared with projection. Color LED displays have other advantages, such as fast response of each LED bead, individually controlled on/off, complete turn-off for black display, and high contrast. The LED lamp bead has narrow spectrum, and still keeps wide color gamut when the brightness is high. The large-screen display of the LED gradually enters the field of high-quality video projection, and with the continuous maturity of the technology, the application scene can be continuously expanded.

the existing LED large-size display has the problems that the luminous intensity of LED lamp beads is very high, light crosstalk exists among the LED lamp beads, the display effect is seriously influenced, and the existing solution is to add a shading frame among the LED lamp beads so as to prevent pixel crosstalk among the LED lamp beads. A fixed mode of the shading frame of the current LED screen is adhered to a PCB (printed circuit board) through an adhesive, the mode is not convenient for later maintenance disassembly, the other mode is fixed through screws, the consistency and the attractiveness of the appearance of the screen are influenced by the screws through front fixation, and therefore a novel LED screen installation mode is urgently needed.

SUMMERY OF THE UTILITY MODEL

the application provides an LED display screen for solve LED display screen installation and the not good problem of display effect.

In order to solve the technical problem, the application adopts a technical scheme that: the LED display screen is characterized by comprising a substrate and a shading frame, wherein LED light-emitting units distributed in an array manner are arranged on the substrate; the shading frame is arranged on an emergent light path of the LED light-emitting unit and comprises a plurality of grids distributed in an array mode, a plurality of first fixing pieces are arranged on one side, adjacent to the base plate, of the grids, and second fixing pieces are arranged in the area, corresponding to the first fixing pieces, of the base plate.

In one embodiment, the first fixing member includes a fastening member integrally formed with the light shielding frame, the second fixing member is a through hole corresponding to the fastening member, and the fastening member is assembled with the through hole of the substrate in an interference manner.

In one embodiment, the fastening member includes a first structure and a second structure, one end of the first structure is connected to the shade frame, and the second structure is stacked on the other end of the first structure.

In one embodiment, the first structure is one of a cone, a truncated cone, or a cone, and the second structure is one of a cone, a truncated cone, or a cylinder.

In an embodiment, the outer surface of the first structure is provided with an elastomer or a threaded structure.

In an embodiment, the first fixing element includes a plurality of integrally formed fastening elements, the second fixing element is a through hole corresponding to the fastening elements, and the fastening elements and the through hole are assembled in a fastening fit manner.

In one embodiment, the first fixing member includes a plurality of first fixing holes, the second fixing member includes a plurality of second fixing holes, and the first fixing holes and the second fixing holes are fastened by screws.

In an embodiment, the LED display screen further includes an optical film, the optical film includes one of a diffusion film, a polarization film, or a protection film, and the optical film is fixed on the light-emitting surface of the light-shielding frame by glue or a clamping member.

in an embodiment, the light shielding frame further includes a positioning column, and the positioning column is used for positioning and assembling with the substrate.

In one embodiment, the shading frame comprises a first grid and a second grid, and the first fixing piece is arranged at the intersection area of the first grid and the second grid.

The beneficial effect of this application is: the first fixing piece is arranged on the side, facing the base plate, of the shading frame, the second fixing piece is arranged in the area, corresponding to the first fixing piece, of the base plate, installation marks are further reduced through the mode that the inner side surface of the shading frame is assembled with the base plate, and therefore when the LED display screen is watched on the front side, the attractiveness of the appearance cannot be affected due to the installation marks.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of an LED display screen of the present application;

FIG. 2 is a schematic structural diagram of a light shielding frame and a fixing member of an embodiment of an LED display screen of the present application;

FIG. 3 is an enlarged, fragmentary schematic view of region III of FIG. 2;

FIG. 4 is an enlarged partial schematic view of region IV of FIG. 3;

FIG. 5 is a schematic view of a mounting assembly 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 an LED display screen of the present application;

FIG. 7 is another schematic structural diagram of a fixing member of an embodiment of an LED display screen of the present application;

FIG. 8 is another schematic structural diagram of a fixing member of an embodiment of an LED display screen of the present application;

FIG. 9 is another schematic structural diagram of a fixing member of an embodiment of an LED display screen of the present application;

FIG. 10 is a schematic view of another structure of a fixing member of an embodiment of the LED display screen of the present application;

FIG. 11 is a schematic structural view of a light shielding frame and a fastener according to an embodiment of the present application;

FIG. 12 is a schematic view of an assembly process of a fastener according to an embodiment of the present application;

FIG. 13 is a schematic structural diagram of another embodiment of an LED display screen of the present application;

FIG. 14 is a schematic structural diagram of a light shielding frame and a fixing hole of an embodiment of an LED display screen of the present application;

FIG. 15 is an enlarged partial schematic view of region XV of FIG. 14;

Fig. 16 is a schematic view of a fixing hole and a screw assembly structure of an embodiment of the LED display screen according to the present application.

Detailed Description

the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first" and "second" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. All directional indications (such as up, down, left, right, front, and rear … …) in the embodiments of the present application are only used to explain the relative positional relationship between the elements, the movement, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. Such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may alternatively include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "disposed at … …" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood as appropriate by those of ordinary skill in the art.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of an LED display screen according to the present application. 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 one surface of the light shielding frame 10, the light shielding frame 10 is disposed on an emitting light path of the LED light emitting units, and the light shielding frame 10 includes a plurality of grids 11 distributed in an array to accommodate the corresponding LED light emitting units. That is, the light shielding frame 10 is located between the substrate 30 and the optical film 20, and the LED light emitting units arranged in an array on the substrate 30 are accommodated in the grids 11 of the light shielding frame 10, so that each grid 11 accommodates the LED light emitting unit to form one pixel of the LED display screen. The grid 11 is provided with a plurality of first fixing members on the side adjacent to the base plate 30, and the first fixing members may be fasteners, fastening holes, or the like. The substrate 30 is provided with a second fixing member at a region corresponding to the first fixing member, and the second fixing member may be a through fixing hole or a fastening member. The first fixing member and the second fixing member cooperate to fix the sunshade frame 10 and the base plate 30. The substrate 30 may be a metal plate, a Printed Circuit Board (PCB), or the like, and the LED light emitting unit may be disposed on the substrate 30 by surface mounting, Chip On Board (COB) packaging, or the like. The plurality of grids 11 of the light blocking frame 10 are arranged in an array to receive the LED light emitting units, so that the LED light emitting units of the array can be separated to prevent optical crosstalk between the LED light emitting units. The material of the shade support 10 can be one or more of plastic, metal, or metal alloy, etc. The shape of the shade frame 10 may be rectangular, square, or circular, and the like, and may be set according to practical situations, and is not limited herein. The optical film 20 may be one of a diffusion film, a polarization film, or a protection film, and the optical film 20 may be fixed by bonding, clamping, or using a clamp, and the like, which is not limited herein.

the optical film 20 is fixed on one surface of the shading frame 10, and the other surface of the shading 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 by passing through the optical film 20. In addition, in the manner of assembling the substrate 30 to the inner surface of the light shielding frame 10, the mounting traces of the assembly are further reduced, so that the appearance of the LED display panel 100 is not affected by the mounting traces when the LED display panel is viewed from the front.

Alternatively, referring to FIG. 2, the shade support 10 can have a thickness of 0.1-10 millimeters. 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, so as to leave a space for accommodating the LED light emitting unit. The damage of the LED light-emitting unit caused by the fact that the optical film 20 presses the LED light-emitting unit is avoided.

Referring to fig. 3, the shade support 10 can include a first grid 12 and a second grid 13. The first grids 12 and the second grids 13 are staggered with each other to form a plurality of grids 11 distributed in an array on the shading frame 10. The space of each grid 11 may accommodate one or two or three LED lighting units, so that each space corresponds to one pixel point of the LED display screen 100. The shape and number of the grids 11 are not limited herein, and may be, for example, a seamless quadrangle or a seamless hexagon, and the number may be 64, 81, or 255. The first and second grids 12 and 13 of the shade guide 10 have the same thickness. That is, the width W1 of the first grid 12 and the width W2 of the second grid 13 are equal, and the thickness may be 0.2-5 mm.

alternatively, referring to fig. 4 and 5, the first fixing member may include a fastening member 40 integrally formed with the shade bracket 10, the second fixing member is a through hole corresponding to the fastening member 40, and the fastening member 40 is assembled with the through hole of the base plate 30 by interference. The fastening member 40 may be a polyhedron (e.g., a rectangular parallelepiped) or a rotating body (e.g., a circular truncated cone or a cone) made of an elastic material such as plastic or plastic. The number of fasteners 40 may be 4, 5, or 9, etc. The plurality of fastening members 40 may be uniformly distributed at the center, four corners, and center of four sides of the light blocking frame 10 and toward one side of the base plate 30. Specifically, the fasteners 40 may be disposed 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.

With continued reference to fig. 4, the fastening member 40 may include a first structure 41 and a second structure 42, wherein one end of the first structure 41 is connected to the shade frame 10, and the second structure 42 is stacked on the other end of the first structure 41. Alternatively, the first structure 41 is one of a truncated cone, a cylinder, or a cone, and the second structure 42 is one of a truncated cone, a cone, or a cylinder. For example, the fastener 40 may be an integrally formed first structure 41 at the intersection of the first grid 12 and the second grid 13, and a combination of a cylinder and a truncated cone of the second structure 42. Wherein 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 may be less than or equal to the height h1 of the cylinder, and the diameter D2 of the truncated cone may be less than the diameter D1 of the cylinder. As shown in fig. 5 (a) and (b), the second fixing element of the corresponding region of the base plate 30 may be a through hole, the diameter of the through hole may be D3, and the second structure 42 may be a truncated cone, the diameter D2 of which is smaller than the diameter D3 of the through hole, so as to facilitate guiding the insertion of the fastener 40 into the through hole. Since the tolerance band of the cylinder of the first structure 41 is larger than that of the through hole, and the fastening member 40 is usually made of an elastic material such as plastic, etc., when the fastening member 40 is pressed into the through hole of the substrate 30 by a slight force during installation, the elastic deformation of the fastening member 40 increases the friction force between the fastening member 40 and the substrate 30, so that the light shielding frame 10 can be fixed on the substrate 30. The fastening member 40 can be completely inserted into the through hole of the base plate 30, so that the fastening member 40 can be prevented from affecting the light shielding effect of the light shielding frame 10. In other embodiments, the second fixing member provided on the substrate 30 is an integrally formed fastening member 40, and the first fixing member provided on the shade support 10 is a fixing hole, which are fixed by interference fit.

In some embodiments, referring to FIG. 6, the fastener 40 may be a combination of a cylinder 41a and a cone 42a, and 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 described herein. Since the cone 42a is disposed on the cylinder 41a, the fastener 40 can be easily inserted into the through hole of the base plate 30, and the assembly efficiency of the light shielding frame 10 and the base plate 30 can be improved. Referring to fig. 7, the fastener 40 may be a stepped body formed by combining the structure 41b and the structure 42b, the structure 41b and the structure 42b may be polyhedrons (e.g., cuboids) or rotators (e.g., cylinders), the height of the structure 41b and the structure 42b is similar to that of the previous embodiment, and the radial width of the structure 41b is greater than that of the structure 42 b.

alternatively, the outer surface of the first structure 41 may be provided with an elastomer or a threaded structure. Referring to FIG. 8, the outer surface of the first structure 41c of the fastener 40 may be provided with a raised elastomer 43 to further increase friction. The elastomer 43 may be the same material as the fastener 40, and may be, for example, rubber or a resilient plastic. The fastening member 40 may be a combination of a cylinder 41c and a circular truncated cone 42c, and unlike the previous embodiment, in the present embodiment, the outer surface of the cylinder 41c is circumferentially provided with a protruding elastic body 43, so that when the cylinder 41c is fixed in the hole, the elastic body 43 further enhances the friction between the fastening member 40 and the inner wall of the hole of the base plate 30, thereby making the assembling and fixing between the light shielding frame 10 and the base plate 30 more firm. Referring to fig. 9, the fastener 40 may be an integral circular truncated cone 41 d. I.e. the first structure 41 is directly integrated without the second structure 42, and the height of the circular truncated cone 41d is the sum of the heights of the cylinder 41 and the circular truncated cone 42 in the previous embodiment. And a convex elastic body 43 is circumferentially arranged on the outer surface of the tail end of the circular truncated cone 42. When the circular truncated cone 41d is fixed in cooperation with the through hole of the base plate 30, the elastic body 43 can further enhance the friction force between the first fixing member and the inner wall of the through hole of the base plate 30, reduce the risk that the light shielding frame 10 falls off from the base plate 30, and omit the cylindrical part, so that the fastener 40 is simpler to manufacture, and the manufacturing cost is saved. Of course, the fastener 40 may be a single cylinder structure (not shown), in which the height of the cylinder is the sum of the heights of the cylinder 41 and the circular truncated cone 42 in the previous embodiment, and a raised elastic body (not shown) is circumferentially arranged on the outer surface of the end of the cylinder to enhance the friction force when the cylinder is fixed.

Alternatively, referring to fig. 10, the fastener 40 may be a combination of a cylinder 41e and a circular table 42 e. In this embodiment, the outer surface of the cylinder 41c may be provided with grooves to form a thread structure. Corresponding threaded holes may be provided in the base plate 30. It will be appreciated that the fastener 40 is secured to the base plate 30 by a threaded mating, thereby providing a more secure attachment of the fastener 40 to the base plate 30.

in some embodiments, referring to fig. 11, the first fixing element of the sunshade frame 10 may include an integrally formed fastening element 50, and the fastening element 50 may be made of an elastic material such as plastic or plastic. The second fixing member is a through hole corresponding to the fastener 50, and the fastener 50 and the through hole are assembled in a snap fit manner so that the light shielding frame 10 is fixed to the substrate 30. The plurality of fasteners 50 may be uniformly distributed at the center, four corners and the center of four sides of the light shielding frame 10 and face one side of the substrate 30. Specifically, the fastener 50 may be disposed on the first grid 12 or the second grid 13 or at an intersection of the first grid 12 and the second grid 13, preferably at the intersection. The latch 50 may include a support portion 51 and a latch portion 52 formed integrally, and the bottom diameter of the support portion 51 may be 0.2-8 mm. The locking part 52 may be a hollow circular truncated cone structure, the diameter of the bottom of the circular truncated cone is larger than that of the bottom of the supporting part 51, and the diameter of the top of the circular truncated cone may be between the diameter of the bottom of the supporting part 51 and the diameter of the bottom of the circular truncated cone, so as to guide the insertion of the locking part 50. Continuing to refer to (a) and (b) in fig. 12, a through hole matched with the locking element 50 may be opened on the substrate 30, when the locking element 50 is not subjected to an external force, the diameter of the bottom of the circular truncated cone of the locking portion 52 is greater than that of the through hole, when the locking element 50 is subjected to an external force, the diameter of the bottom of the circular truncated cone of the locking portion 52 is smaller than that of the through hole, after the locking portion 52 completely passes through the through hole, due to its own elasticity, the diameter of the locking portion 52 is greater than that of the through hole, and at this time, the locking element 50 is locked on a side of the substrate 30 away. The height of the supporting portion 51 may be the same as the thickness of the base plate 30, so that the fastener 50 is firmly clamped in the through hole, and the fastener 50 is prevented from loosening.

In other embodiments, referring to fig. 13, 14, 15 and 16, the first fixing member includes a plurality of first fixing holes 60, the second fixing member may include a plurality of second fixing holes, and the first fixing holes 60 and the second fixing holes are fastened by screws 61 (e.g., may be self-tapping screws, etc.). The first fixing holes 60 may be uniformly distributed at the center, four corners and the center of four sides of the light blocking frame 10 and face one side of the substrate 30. Specifically, the first fixing holes 60 may be disposed on the first grill 12 or the second grill 13 or at an intersection of the first grill 12 and the second grill 13, preferably at the intersection. The first fixing hole 60 can be used for receiving a screw 61 and screwing to fix the shading frame 10 and the substrate 30. During assembly, a screw 61 can penetrate through the second fixing hole of the substrate 30 from the side of the substrate 30 away from the shading frame 10 to the first fixing hole 60 on the shading frame 10, so as to achieve fixing, and a part of the attached drawings after successful assembly can refer to fig. 16. The above manner can prevent the screw 61 from being exposed on the surface of the light shielding frame 10, thereby ensuring the appearance consistency of the light shielding frame 10 and preventing the screw from influencing the display of the LED display screen 100. Of course, other types of screws (bolts) can be used to fix the base plate 30 from the side facing away from the shade guide 10 through the second fixing hole of the base plate 30 to the first fixing hole 60 of the shade guide 10 by screwing.

alternatively, the optical film 20 may be fixed on the light-emitting surface of the light-shielding frame 10 by glue or a clamping member. The optical film 20 may be a diffusion film for diffusing the angle of the emitted light to increase the filling factor of the LED display panel 100, or a polarization film for realizing 3D display. It is understood that in one embodiment, the optical film 20 may also be a protective film for protecting the LED display screen from water and dust, and the material thereof may be a high polymer or a special glass. During assembly, the light shielding frame 10 may be fixed on the substrate 30, 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 and the like from entering the shading frame 10, thereby improving the packaging tightness of the LED display screen 100.

In some embodiments, the shade stand 10 can further include positioning posts (not shown) disposed on the first grid 12 or the second grid 13 or at the intersection of the first grid 12 and the second grid 13. The positioning posts can be used for positioning and assembling with the substrate 30. The base plate 30 may be provided with a positioning hole (not shown) matching with the positioning column, and when the light shielding frame 10 is fixedly mounted on the base plate 30, the positioning column and the positioning hole can play a role in positioning, so as to improve the efficiency of fixing and mounting. Of course, the positioning posts may be provided on the substrate 30 and the positioning holes may be provided on the light shielding frame 10.

Optionally, the inner walls of the first grid 12 and the second grid 13 of the light shielding frame 10 are coated with light shielding layers so as to form light-tight chambers in each, thereby preventing light leakage between the light shielding frames 10. Therefore, when the light shielding frame 10 accommodates the LED light emitting units, it is further ensured that the light of the LED light emitting units in the adjacent grids 11 is not interfered, and the light is emitted only from the side of the light shielding frame 10 where the optical film 20 is disposed, so as to further improve the brightness and uniformity of the light, and improve the display effect of the LED display screen 100.

It should be understood that the above structures do not represent all components of the LED display 100, and the LED display 100 may be provided with other components for performing its functions, such as a driving assembly or a power supply assembly.

the above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. the LED display screen is characterized by comprising a substrate and a shading frame, wherein LED light-emitting units distributed in an array manner are arranged on the substrate;

The shading frame is arranged on an emergent light path of the LED light-emitting unit and comprises a plurality of grids distributed in an array mode, a plurality of first fixing pieces are arranged on one side, adjacent to the base plate, of the grids, and second fixing pieces are arranged in the area, corresponding to the first fixing pieces, of the base plate.

2. The LED display screen of claim 1, wherein the first fixing member comprises a fastening member integrally formed with the light shielding frame, the second fixing member is a through hole corresponding to the fastening member, and the fastening member is assembled with the through hole of the substrate in an interference manner.

3. The LED display screen of claim 2, wherein the fastener comprises a first structure and a second structure, one end of the first structure is connected with the shading frame, and the second structure is stacked at the other end of the first structure.

4. The LED display screen of claim 3, wherein the first structure is one of a cone, a truncated cone, or a cone, and the second structure is one of a cone, a truncated cone, or a cylinder.

5. LED display screen according to claim 4, characterised in that the outer surface of the first structure is provided with an elastomer or a screw thread structure.

6. The LED display screen of claim 1, wherein the first fixing member comprises a plurality of integrally formed fasteners, the second fixing member is a through hole corresponding to the fasteners, and the fasteners and the through hole are assembled in a snap fit manner.

7. the LED display screen of claim 1, wherein the first fixing member comprises a plurality of first fixing holes, the second fixing member comprises a plurality of second fixing holes, and the first fixing holes and the second fixing holes are fastened by screws.

8. The LED display screen of claim 1, further comprising an optical film, wherein the optical film comprises one of a diffusion film, a polarization film or a protection film, and the optical film is fixed on the light-emitting surface of the light-shielding frame by glue or a clamping member.

9. The LED display screen of claim 1, wherein the light blocking frame further comprises positioning posts for positioning and assembling with the substrate.

10. The LED display screen of claim 1, wherein the light blocking frame comprises a first grid and a second grid, and the first fixing member is disposed at a junction area of the first grid and the second grid.