Mini LED lamp panel capable of preventing optical crosstalk, forming die and Mini LED backlight source

Abstract

The utility model discloses a Mini LED lamp panel capable of preventing optical crosstalk, a forming die and a Mini LED backlight source, and relates to the field of display modules, the Mini LED lamp panel comprises a substrate and LED lamp beads which are arranged on the substrate and distributed in a matrix mode, the substrate is provided with a plurality of longitudinal rubber strips and transverse rubber strips, and the longitudinal rubber strips and the transverse rubber strips are arranged on the substrate. The longitudinal rubber strips and the transverse rubber strips are vertically arranged and define rectangular grooves, and the LED lamp beads are located in the rectangular grooves; the rectangular groove is defined by the longitudinal rubber strips and the transverse rubber strips, a dam is formed around the LED lamp beads through the rectangular groove, and light emitted by the side faces of the LED lamp beads is isolated and blocked through the transverse rubber strips and the longitudinal rubber strips, so that the problem of optical crosstalk is avoided, halo is prevented from being formed in the peripheral area, and the display of images in the peripheral area is guaranteed; and the overall arrangement of the adhesive tape structure carries out dam enclosing and shading on the LED lamp beads, the manufacturing process is simple, installation is convenient, the production cost is reduced, the production efficiency is high, enterprise benefits are improved, and product competition is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, and in particular to a Mini LED lamp panel, a molding die and a Mini LED backlight source for preventing cross-lighting. Background Art

[0002] Mini led is composed of many LED lights, and it can independently control the lighting of a single lamp bead. When displaying an image, only the LED light of the image will light up, while the LED lights in other areas will be off. The contrast between light and dark makes the displayed image more delicate and saturated. However, when each independent lamp bead is lit, there will be a weak light illuminating the surrounding area, forming a halo in the surrounding area, affecting the display of the image in the surrounding area. China's patent application No. 202222493001.7 discloses an LED light board and a mini LED backlight source, including a PCB board and a plurality of LED lamp beads arranged in a matrix on the front side of the PCB board, wherein a square reflector cup is respectively provided around the periphery of the LED lamp beads located at the even positions of the odd rows and the periphery of the LED lamp beads located at the odd positions of the even rows, the top and bottom ends of the reflector cup are both open, the bottom end of the reflector cup is arranged on the front side of the PCB board, each of the four inner walls of the reflector cup is respectively provided with a first inclined surface or a first curved surface inclined upward, and each of the four outer walls of the reflector cup is respectively provided with a second inclined surface or a second curved surface inclined upward; the design of this structure can surround the LED lamp beads through the reflector cup, thereby solving the problem of cross-lighting between adjacent LED lamp beads. However, when the inventors implemented this structure, they found the following defects: during production, it is necessary to install square reflective cups outside at least half of the LED lamp beads on the lamp board, and the size of the reflective cups is relatively small, resulting in a relatively complex production process and high installation difficulty, which not only increases the production cost, but also reduces the production efficiency, which is not conducive to product competition. Therefore, the utility model discloses a Mini LED lamp board, a molding mold and a Mini LED backlight source that prevent cross-lighting to solve the above problems. Utility Model Content

[0003] Based on this, it is necessary to provide a Mini LED light board, a molding mold and a Mini LED backlight source that prevent cross-talk in response to the above-mentioned technical problems. A rectangular groove is formed by longitudinal and transverse rubber strips, and the LED lamp beads are surrounded by the rectangular groove to form a dam around the LED lamp beads. The light from the sides of the LED lamp beads is isolated and blocked by transverse and longitudinal rubber strips, thereby avoiding the occurrence of cross-talk problems and the formation of halos in the surrounding areas, ensuring the appearance of images in the surrounding areas, and the overall arrangement of the rubber strip structure to surround and shade the LED lamp beads. The preparation process is simple, easy to install, reduced production costs, high production efficiency, improved corporate benefits, and conducive to product competition.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A Mini LED light board for preventing cross-talk, comprising a substrate and LED lamp beads arranged in a matrix on the substrate, wherein a plurality of longitudinal rubber strips and transverse rubber strips are arranged on the substrate, the longitudinal rubber strips and transverse rubber strips are arranged vertically and form a rectangular groove, and the LED lamp beads are located in the rectangular groove.

[0006] As a preferred implementation of the Mini LED light board for preventing cross-lighting provided by the utility model, the transverse rubber strip and the longitudinal rubber strip are both made of white UV-resistant glue.

[0007] As a preferred implementation of the Mini LED light board for preventing cross-lighting provided by the utility model, the four side walls of the rectangular groove are coated with a reflective layer.

[0008] As a preferred implementation of the Mini LED light board for preventing cross-lighting provided by the utility model, the side wall of the rectangular groove is provided with a first inclined surface, and the first inclined surface is connected to a first vertical surface.

[0009] As a preferred implementation of the Mini LED light board for preventing cross-lighting provided by the utility model, the top surfaces of the transverse rubber strips and the longitudinal rubber strips are not higher than the top surfaces of the LED lamp beads.

[0010] As a preferred implementation of the Mini LED light board for preventing cross-lighting provided by the utility model, the distance between the transverse rubber strip and the longitudinal rubber strip and the LED lamp beads is 1-2 mm.

[0011] As a preferred implementation of the Mini LED light board for preventing cross-lighting provided by the utility model, positioning holes are provided on the substrate, and the positioning holes are used to position the forming molds of the vertical rubber strips and the horizontal rubber strips.

[0012] The above-mentioned molding die includes an outer frame, in which rectangular frames arranged in a matrix are arranged, and mold grooves are formed between adjacent rectangular frames or between the rectangular frame and the outer frame. The outer frame is provided with a protrusion, and the protrusion is provided with a positioning column matching the positioning hole.

[0013] As a preferred embodiment of the molding die provided by the utility model, connecting pieces are provided at the four corners of the top surface of the rectangular frame, and adjacent rectangular frames and the rectangular frame and the peripheral frame are fixedly connected by the connecting pieces.

[0014] The present application also provides a Mini LED backlight source, which includes the above-mentioned Mini LED light board.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The Mini LED lamp board for preventing cross-talk provided by the utility model forms a rectangular groove by longitudinal and transverse rubber strips, and surrounds LED lamp beads by the rectangular groove to form a dam around the LED lamp beads. The transverse and longitudinal rubber strips are used to isolate and block the light emitted from the sides of the LED lamp beads, thereby avoiding the occurrence of cross-talk problems and the formation of halos in the surrounding areas, ensuring the display of images in the surrounding areas, and the overall arrangement of the rubber strip structure surrounds the LED lamp beads to shield the light. The preparation process is simple, the installation is convenient, the production cost is reduced, the production efficiency is high, the enterprise benefits are improved, and it is conducive to product competition.

[0017] The Mini LED light board for preventing cross-light provided by the utility model can integrally cast the longitudinal rubber strip and the transverse rubber strip on the substrate by means of a provided molding mold, and utilize the provided positioning holes to accurately position the transverse rubber strip and the longitudinal rubber strip to ensure that the rectangular grooves can surround the LED lamp beads at equal intervals. At the same time, the integrally cast rubber strip structure can also greatly improve the production efficiency and ensure the integrity of the rubber strip structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A three-dimensional schematic diagram of the overall structure of the Mini LED light board for preventing light crosstalk provided by the utility model;

[0020] Figure 2 A three-dimensional schematic diagram of the rubber strip structure in the Mini LED light board for preventing light crosstalk provided by the utility model;

[0021] Figure 3 for Figure 2 Schematic cross-sectional view of ;

[0022] Figure 4 It is a three-dimensional schematic diagram of the overall structure of the forming mold in the utility model;

[0023] Figure 5 for Figure 4 Schematic cross-sectional view of ;

[0024] Figure 6 for Figure 5 Side schematic diagram of .

[0025] The markings in the figure are as follows:

[0026] 1. Base plate; 2. LED lamp beads; 3. Longitudinal rubber strip; 4. Horizontal rubber strip; 5. Rectangular groove; 6. First inclined surface; 7. First vertical surface; 8. Positioning hole; 9. Outer frame; 10. Rectangular frame; 11. Mold groove; 12. Bump; 13. Positioning column; 14. Connecting piece. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0028] As described in the background technology, when each independent lamp bead is lit, a weak light will illuminate the surrounding area, forming a halo in the surrounding area, affecting the appearance of the image in the surrounding area. By surrounding the LED lamp bead with a reflector cup, the problem of light crosstalk between adjacent LED lamp beads is solved. However, during production and preparation, it is necessary to install a square reflector cup outside at least half of the LED lamp beads on the lamp board, and the size of the reflector cup is relatively small, resulting in a more complicated production process and a higher difficulty in installation. Not only is the production cost high, but it also reduces production efficiency, which is not conducive to product competition.

[0029] In order to solve this technical problem, the utility model provides a Mini LED light board that prevents cross-lighting, which is applied in the field of display modules.

[0030] Specifically, please refer to Figure 1-3The Mini LED light board for preventing cross-lighting specifically includes a substrate 1 and LED lamp beads 2 arranged in a matrix on the substrate 1, and a plurality of longitudinal rubber strips 3 and transverse rubber strips 4 are arranged on the substrate 1, and the longitudinal rubber strips 3 and transverse rubber strips 4 are vertically arranged and form a rectangular groove 5, and the LED lamp beads 2 are located in the rectangular groove 5.

[0031] The Mini LED lamp board for preventing cross-lighting provided by the utility model forms a rectangular groove 5 by means of longitudinal rubber strips 3 and transverse rubber strips 4, and surrounds LED lamp beads 2 by means of the rectangular groove 5 to form a dam around the LED lamp beads 2. The transverse rubber strips 4 and longitudinal rubber strips 3 are used to isolate and block the light emitted from the sides of the LED lamp beads 2, thereby avoiding the occurrence of cross-lighting problems and the formation of halos in the surrounding areas, thereby ensuring the appearance of images in the surrounding areas. The rubber strip structure is arranged as a whole to surround and shade the LED lamp beads 2. The preparation process is simple, the installation is convenient, the production cost is reduced, the production efficiency is high, the enterprise benefits are improved, and the product competition is beneficial.

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] Please refer to Figure 1-3 , provides a Mini LED light board for preventing cross-lighting, which includes a substrate 1 and LED lamp beads 2 arranged in a matrix on the substrate 1, the bottom of the LED lamp beads 2 are welded to the substrate 1 through a soldering pad, and the substrate 1 is also provided with an LED chip at the bottom of the LED lamp beads 2 to form a light board structure, a plurality of longitudinal rubber strips 3 and transverse rubber strips 4 are provided on the substrate 1, the longitudinal rubber strips 3 and the transverse rubber strips 4 are vertically arranged and the longitudinal rubber strips 3 and the transverse rubber strips 4 surround a rectangular groove 5, and the LED lamp beads 2 are located in the rectangular groove 5.

[0036] The material of the transverse rubber strip 4 and the longitudinal rubber strip 3 is white UV-resistant glue. Specifically, the white UV-resistant glue is acrylic UV-resistant glue, epoxy resin UV-resistant glue, polyurethane UV-resistant glue or silicone rubber UV-resistant glue. In this case, acrylic UV-resistant glue is preferred. White UV-resistant glue can not only reduce the yellowing problem of white oil caused by later light irradiation, but also weld the lamp beads on the lamp board to increase its reliability. At the same time, the glue has better fluidity than the packaging glue, and can be evenly covered on the surface of the substrate 1. The side walls of the rectangular groove 5 are coated with a reflective layer. The reflective layer is coated on the sides of the longitudinal rubber strip 3 and the transverse rubber strip 4, and has good reflectivity to light. Of course, a reflective agent can also be added to the glue to make the longitudinal rubber strip 3 and the transverse rubber strip 4 reflective to light, which reduces the process of coating the reflective layer.

[0037] The present application also provides a Mini LED backlight source, which includes the above-mentioned Mini LED light board.

[0038] The Mini LED light board for preventing cross-light provided in Example 1 is further optimized. Specifically, Figure 3 As shown, the side wall of the rectangular groove 5 is provided with a first inclined surface 6, and the first inclined surface 6 is connected to the first vertical surface 7. The first inclined surface 6 is used to reflect light, and the first vertical surface 7 is used to improve the light shielding effect. At the same time, the top surface of the horizontal rubber strip 4 and the vertical rubber strip 3 is not higher than the top surface of the LED lamp bead 2, ensuring light shielding while facilitating the installation of the LED light board. At the same time, the distance between the horizontal rubber strip 4 and the vertical rubber strip 3 and the LED lamp bead 2 is 1-2mm, and the distance from the LED lamp bead 2 is specifically adjusted according to the number of distribution areas of the LED lamp bead 2 on the substrate 1.

[0039] The Mini LED light board for preventing cross-light provided in Example 2 is further optimized. Specifically, Figure 4-6As shown, the substrate 1 is provided with positioning holes 8, and the positioning holes 8 are used to position the molding mold of the vertical rubber strip and the horizontal rubber strip 4. The positioning holes 8 are set to two and are set at the diagonal positions of the substrate 1. The molding mold includes an outer frame 9, and the outer frame 9 is provided with rectangular frames 10 arranged in a matrix. A mold groove 11 is formed between adjacent rectangular frames 10 or between the rectangular frames 10 and the outer frame 9, and the horizontal rubber strip 4 or the longitudinal rubber strip 3 is formed in the mold groove 11. The outer frame 9 is provided with a protrusion 12, and the protrusion 12 is provided with a positioning column 13 matching the positioning hole 8. The protrusion 12 is placed on the outer frame 9. The positioning column 13 on the upper part is inserted into the positioning hole 8, so that the rectangular frame 10 surrounds the LED lamp bead 2. During pouring, the glue flows along the mold groove 11, so that the glue can flow to all the mold grooves 11, thereby forming a horizontal rubber strip 4 or a vertical rubber strip 3, and connecting pieces 14 are provided at the four corners of the top surface of the rectangular frame 10. The adjacent rectangular frames 10 and the rectangular frame 10 and the outer frame 9 are fixedly connected by the connecting pieces 14. The rectangular frame 10 is fixed by the connecting piece 14, and the rectangular frame 10 and the outer frame 9 are fixed at the same time, thereby ensuring the integrity of the mold groove 11.

[0040] Through the above-mentioned structural design, the longitudinal rubber strip 3 and the transverse rubber strip 4 can be integrally cast on the substrate 1 through the provided molding mold, and the provided positioning holes 8 can be used to accurately position the transverse rubber strip 4 and the longitudinal rubber strip 3 to ensure that the rectangular grooves 5 can surround the LED lamp beads 2 at equal intervals. At the same time, the integrally cast rubber strip structure can also greatly improve the production efficiency and ensure the integrity of the rubber strip structure.

[0041] The preparation method of the Mini LED light board for preventing cross-talk provided by the utility model is as follows: after the preparation of the Mini LED light board is completed, the molding mold is installed on the substrate 1, and the glue is poured into the mold groove 11 of the molding mold by using a pouring tool. After the glue solidifies, a longitudinal rubber strip 3 and a transverse rubber strip 4 are formed, and the longitudinal rubber strip 3 and the transverse rubber strip 4 are trimmed, and a rectangular groove 5 is formed by the longitudinal rubber strip 3 and the transverse rubber strip 4, and the LED lamp bead 2 is surrounded by the rectangular groove 5, and a dam is formed around the LED lamp bead 2, and the light from the side of the LED lamp bead 2 is isolated and blocked by the transverse rubber strip 4 and the longitudinal rubber strip 3, so as to avoid the occurrence of the cross-talk problem and avoid the formation of a halo in the surrounding area. , ensuring the appearance of the image in the surrounding area, and the overall arrangement of the rubber strip structure to enclose the LED lamp beads 2 for light shielding, the preparation process is simple, easy to install, reduced production costs, high production efficiency, improved corporate benefits, and conducive to product competition, the longitudinal rubber strip 3 and the transverse rubber strip 4 can be integrally cast on the substrate 1 through the set molding mold, and the position of the transverse rubber strip 4 and the longitudinal rubber strip 3 can be accurately determined by using the set positioning holes 8, ensuring that the rectangular grooves 5 can surround the LED lamp beads 2 at equal intervals, and at the same time, the integrally cast rubber strip structure can also greatly improve production efficiency and ensure the integrity of the rubber strip structure.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A Mini LED light board for preventing cross-talk, comprising a substrate and LED lamp beads arranged in a matrix on the substrate, characterized in that: A plurality of longitudinal rubber strips and transverse rubber strips are arranged on the base plate, the longitudinal rubber strips and transverse rubber strips are arranged vertically and form a rectangular groove, and the LED lamp beads are located in the rectangular groove.

2. The Mini LED light board for preventing cross-lighting according to claim 1, characterized in that: The transverse rubber strip and the longitudinal rubber strip are both made of white UV-resistant glue.

3. The Mini LED light board for preventing cross-lighting according to claim 1, characterized in that: The side walls of the rectangular groove are all coated with a reflective layer.

4. The Mini LED light board for preventing cross-lighting according to claim 1, characterized in that: The side wall of the rectangular groove is provided with a first inclined surface, and the first inclined surface is connected to the first vertical surface.

5. The Mini LED light board for preventing cross-lighting according to claim 1, characterized in that: The top surfaces of the transverse rubber strip and the longitudinal rubber strip are not higher than the top surfaces of the LED lamp beads.

6. The Mini LED light board for preventing cross-lighting according to claim 1, characterized in that: The distance between the transverse rubber strip and the longitudinal rubber strip and the LED lamp bead is 1-2 mm.

7. The Mini LED light board for preventing cross-lighting according to claim 1, characterized in that: Positioning holes are provided on the base plate, and the positioning holes are used to position the forming molds of the vertical rubber strips and the horizontal rubber strips.

8. A molding die for a Mini LED light board for preventing light crosstalk as claimed in claim 7, characterized in that: The molding die comprises an outer frame, wherein rectangular frames arranged in a matrix are arranged inside the outer frame, mold grooves are formed between adjacent rectangular frames or between a rectangular frame and the outer frame, and a convex block is arranged on the outer frame, and a positioning column matching the positioning hole is arranged on the convex block.

9. A molding die according to claim 8, characterized in that: The four corners of the top surface of the rectangular frame are provided with connecting pieces, and the adjacent rectangular frames and the rectangular frame and the peripheral frame are fixedly connected by the connecting pieces.

10. A Mini LED backlight source, characterized in that: A Mini LED light panel for preventing light crosstalk as described in any one of claims 1 to 7.

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