Structure for improving light crosstalk in backlight module

Abstract

The utility model relates to a structure for improving light crosstalk in a backlight module, which comprises a transparent base material, an isolation part and a lamp panel arranged below the transparent base material, the isolation part is arranged in the transparent base material and divides the transparent base material into a plurality of areas in a grid shape, the lamp panel comprises a plurality of light-emitting units arranged in a matrix, and the light-emitting units are arranged in the transparent base material. The areas are in one-to-one correspondence with the light-emitting units. According to the utility model, the latticed isolation parts are arranged in the transparent base material, the transparent base material is divided into a plurality of areas, and the areas are in one-to-one correspondence with the light-emitting units on the lamp panel, so that the problem of light crosstalk in the prior art is solved, the structure is simplified, the cost is reduced, and the ultrathin and light-weight requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of display, and in particular to a structure for improving light crosstalk in a backlight module. Background Art

[0002] In liquid crystal displays (LCDs) and other display technologies, the backlight unit (BLU) plays a crucial role, providing uniform and sufficiently bright light to ensure clarity and visibility of displayed images. However, BLU designs often face a common problem: light crosstalk.

[0003] Light crosstalk occurs when light from one light-emitting unit in a backlight module not only illuminates its corresponding display area but also partially penetrates into adjacent display areas, resulting in reduced contrast, color distortion, and even "halo" or "light leakage" on the display. These issues seriously affect display quality and user experience.

[0004] To address light crosstalk, traditional backlight module designs typically use structures such as shading plates and light-shielding strips to isolate different light-emitting units. However, these designs often suffer from structural complexity and high manufacturing costs. Furthermore, the use of shading plates or light-shielding strips can increase the overall thickness of the backlight module, hindering the realization of ultra-thin designs. Utility Model Content

[0005] The purpose of the present utility model is to provide a structure for improving light crosstalk in a backlight module. By setting a grid-shaped isolation portion in a transparent substrate, the transparent substrate is divided into several areas, and the areas correspond one-to-one with the light-emitting units on the light board, thereby solving the light crosstalk problem in the prior art, simplifying the structure, reducing costs, and meeting the requirements of ultra-thinness and lightweight.

[0006] A structure for improving light crosstalk in a backlight module includes a transparent substrate, an isolation portion, and a light board arranged below the transparent substrate. The isolation portion is arranged in the transparent substrate and divides the transparent substrate into several areas in a grid shape. The light board includes several light-emitting units arranged in a matrix, and the areas correspond one-to-one to the light-emitting units.

[0007] In the above technical solution, the transparent substrate has high light transmittance. When the transparent substrate is arranged above the light board, the light emitted by the light-emitting unit can smoothly pass through the transparent substrate and illuminate the display area. A grid-shaped isolation portion is provided in the transparent substrate to divide the transparent substrate into several areas, and each area corresponds to a light-emitting unit on the light board. This design effectively isolates the light emitted by different light-emitting units and prevents crosstalk between different areas. Therefore, the uneven brightness and color distortion on the display screen can be significantly improved, and the clarity and contrast of the display screen are improved. Compared with traditional shading plates or shading strips, this structure does not require additional shading components, thereby simplifying the structure of the backlight module, not only reducing manufacturing costs, but also achieving a lightweight design. The utility model solves the light crosstalk problem in the prior art by providing a grid-shaped isolation portion in the transparent substrate to divide the transparent substrate into several areas, and corresponding one-to-one with the light-emitting units on the light board, while simplifying the structure, reducing costs, and meeting the requirements of ultra-thinness and lightweight.

[0008] Furthermore, the isolation portion extends from one surface of the transparent substrate to another surface along a height direction.

[0009] In the above technical solution, since the isolation portion completely penetrates the transparent substrate, it can effectively block or limit the propagation of light in three dimensions. This helps reduce crosstalk between different light-emitting units and improves the uniformity and clarity of the backlight.

[0010] Furthermore, the isolation portion protrudes from, is sunken into, or is flush with the surface.

[0011] In the above technical solution, when the isolation portion protrudes from the surface of the transparent substrate, it can act as a micro-prism or reflective surface, guiding light in a specific direction, enhancing backlight uniformity or producing a specific optical effect. When the isolation portion is recessed into the transparent substrate, it may form tiny grooves or channels. These structures can absorb or scatter light, reducing crosstalk and improving contrast. When the isolation portion is flush with the transparent substrate surface, the flush surface helps reduce light scattering and reflection on uneven surfaces, improving backlight uniformity. Compared to protruding or recessed designs, a flush design may be easier to implement during manufacturing and more cost-effective.

[0012] Furthermore, the areas are of the same size.

[0013] In the above technical solution, since the light of each light-emitting unit is confined to the corresponding area, and the areas are of the same size, the backlight module can generate more uniform backlight, which helps to improve the visual effect and image quality of the display.

[0014] Furthermore, the thickness of the isolation portion is 0.01 mm to 0.2 mm.

[0015] In the above technical solution, the thickness of the isolation portion is set within the range of 0.01mm to 0.2mm, which can ensure the strength of the isolation portion while reducing its obstruction to light propagation. In other words, it can maintain the high light transmittance of the module while ensuring the light control effect.

[0016] Furthermore, a reflective film is provided on the surface of the isolation portion facing the region.

[0017] In the above technical solution, the reflective film can reflect some of the light that might have been scattered or escaped, redirecting it back into the intended light path. This helps improve light utilization, reduce light loss, and thus enhance the overall brightness of the backlight module.

[0018] Furthermore, a plurality of grooves are provided on a side of the transparent substrate close to the light board, and the light-emitting units extend into the grooves one by one.

[0019] In the above technical solution, the design of the light-emitting unit extending into the groove reduces the loss of light during transmission, improves the utilization rate of light, helps to enhance the brightness and uniformity of the backlight, and improves the visual effect of the display.

[0020] Furthermore, the shape of the groove is one of circular and square.

[0021] In the above technical solution, setting the shape of the groove to a regular shape such as a circle or square can ensure the stability of the position of the light-emitting unit in the groove, while reducing the scattering of light at the edge of the groove, achieving a more uniform backlight distribution, and improving the clarity of the display image.

[0022] Furthermore, the material of the transparent substrate is one of glass, PC, PET, PI, and PMMA.

[0023] In the above technical solution, glass, PC, PET, PI, and PMMA all have extremely high light transmittance, which can ensure that the light emitted by the light-emitting unit efficiently passes through the transparent substrate and reduces light loss.

[0024] Furthermore, the isolation portion is made of light-shielding material.

[0025] In the above technical solution, the isolation portion made of light-shielding material divides the transparent substrate into several independent areas, each of which is opposite a corresponding light-emitting unit. When the light-emitting unit is in operation, the light generated by it is confined to the corresponding area, reducing crosstalk between different areas.

[0026] Compared to existing technologies, this invention offers the following advantages: by providing a grid-like partition within the transparent substrate, the transparent substrate is divided into several zones, each corresponding to a light-emitting unit on the light panel. This effectively isolates the light emitted by different light-emitting units and prevents crosstalk between zones. Compared to traditional shading plates or light-shielding strips, this structure eliminates the need for additional shading components, thereby simplifying the backlight module structure, reducing manufacturing costs, and achieving a lightweight and thin design. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure decomposition for improving light crosstalk in the backlight module according to an embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram of the bottom of the transparent substrate according to an embodiment of the present invention.

[0029] Explanation of Figure Numbers

[0030] 1. Transparent substrate; 101. Region; 102. Groove;

[0031] 2. Isolation part; 3. Light board; 4. Light-emitting unit. DETAILED DESCRIPTION

[0032] The structure for improving light crosstalk in the backlight module of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0033] Please refer to Figure 1 and Figure 2 In a preferred embodiment, the structure for improving light crosstalk in the backlight module of the present invention includes a transparent substrate 1, an isolation portion 2, and a light board 3 arranged below the transparent substrate 1. The isolation portion 2 is arranged in the transparent substrate 1 and divides the transparent substrate 1 into a plurality of areas 101 in a grid shape. The light board 3 includes a plurality of light-emitting units 4 arranged in a matrix, and the areas 101 correspond to the light-emitting units 4 one by one.

[0034] As can be seen from the above technical solution, the transparent substrate 1 has high light transmittance. When the transparent substrate 1 is arranged above the light board 3, the light emitted by the light-emitting unit 4 can smoothly pass through the transparent substrate 1 and illuminate the display area. A grid-shaped isolation portion 2 is provided in the transparent substrate 1 to divide the transparent substrate 1 into several areas 101, each area 101 corresponding to a light-emitting unit 4 on the light board 3. This design effectively isolates the light emitted by different light-emitting units 4 and prevents crosstalk between different areas 101. Therefore, the uneven brightness and color distortion on the display screen can be significantly improved, improving the clarity and contrast of the display screen. Compared with traditional shading plates or shading strips, this structure does not require additional shading components, thereby simplifying the structure of the backlight module and reducing manufacturing costs. The utility model solves the light crosstalk problem in the prior art by providing a grid-shaped isolation portion 2 in the transparent substrate 1, dividing the transparent substrate 1 into several areas 101, which correspond one-to-one with the light-emitting units 4 on the light board 3. At the same time, it simplifies the structure, reduces costs, and meets the requirements of ultra-thinness and lightweight.

[0035] Specifically, the isolation portion 2 extends vertically from one surface of the transparent substrate 1 to the other. Because the isolation portion 2 completely penetrates the transparent substrate 1, it effectively blocks or restricts the propagation of light in three dimensions. This helps reduce crosstalk between different light-emitting units 4, improving the uniformity and clarity of the backlight.

[0036] It should be noted that the isolation portion 2 may protrude, be recessed, or be flush with the surface. When the isolation portion 2 protrudes from the surface of the transparent substrate 1, it may act as a micro-prism or a reflective surface, guiding light to propagate in a specific direction, enhancing the uniformity of the backlight or producing a specific optical effect. When the isolation portion 2 is recessed into the surface of the transparent substrate 1, it may form tiny grooves or channels. These structures may absorb or scatter light, reduce light crosstalk, and improve contrast. When the isolation portion 2 is flush with the surface of the transparent substrate 1, the flush surface helps reduce the scattering and reflection of light on uneven surfaces and improve the uniformity of the backlight. Compared with a protruding or recessed design, a flush design may be easier to implement during the manufacturing process and is cost-effective.

[0037] It should be noted that the isolation part can be selectively made into a square or conical shape. The design of the square isolation part is relatively simple, easy to manufacture and process, which helps to reduce production costs and improve production efficiency. The conical isolation part can more effectively guide light so that it can be more evenly distributed inside the module. By adjusting the angle and height of the cone, the propagation path and diffusion range of the light can be controlled, thereby reducing the occurrence of light hotspots and dark areas. In general, for backlight modules that need to be easy to manufacture and process, square isolation parts are a better choice, which can reduce production costs and improve production efficiency. For backlight modules that need to optimize light distribution and improve light utilization, conical isolation parts are a better choice. They can guide light to achieve a more even distribution and improve the clarity and brightness of the display.

[0038] It should be noted that each area 101 is of the same size. Because the light from each light-emitting unit 4 is confined to the corresponding area 101, and the areas 101 are of the same size, the backlight module can produce a more uniform backlight, which helps improve the visual effect and image quality of the display. Users can customize the areas of different sizes as needed to accommodate backlight modules of different sizes.

[0039] In this embodiment, the thickness of the isolating portion 2 is 0.01 mm to 0.2 mm. It should be noted that setting the isolating portion 2 to a uniform thickness facilitates mass production and standardized management, reducing production costs and cycle times. The thickness of the isolating portion 2 is within the range of 0.01 mm to 0.2 mm, ensuring that light passing through the isolating portion 2 does not suffer excessive loss or scattering due to excessive thickness. This helps improve light utilization, allowing more light to reach the display area, and improving the brightness and clarity of the displayed image.

[0040] Furthermore, a reflective film (not shown in the drawings) is provided on the surface of the isolation portion 2 facing the region 101. The provision of the reflective film can reflect some of the light that might otherwise scatter or escape, redirecting such light back into the predetermined light path. This helps to improve light utilization, reduce light loss, and thus enhance the overall brightness of the backlight module. The reflective film not only reflects light, but also blocks light from adjacent light-emitting units 4 to a certain extent. This helps to further reduce light crosstalk and improve the contrast and clarity of the displayed image. Improving light utilization and reducing light crosstalk both help to reduce the light-emitting unit power required by the backlight module. This means that while maintaining the same or higher brightness, energy consumption can be reduced and the energy efficiency of the module can be improved.

[0041] Please refer to Figure 1 and Figure 2During use, the transparent substrate 1 is provided with a plurality of grooves 102 on the side near the light panel 3, into which the light-emitting units 4 extend one by one. The grooves 102 provide precise positioning space for the light-emitting units 4, enhancing the structural stability of the backlight module. This design helps prevent the light-emitting units 4 from shifting or being damaged during transportation and use, improving the reliability and durability of the product. Furthermore, the design of the light-emitting units 4 extending into the grooves 102 reduces light loss during transmission, improves light utilization, helps enhance the brightness and uniformity of the backlight, and enhances the visual quality of the display.

[0042] Specifically, the groove 102 is shaped like a circle or a square. Setting the groove 102 to a regular shape, such as a circle or square, ensures a stable position of the light-emitting unit 4 within the groove 102 while reducing light scattering at the edges of the groove 102, achieving more uniform backlight distribution and improving display clarity. Specifically, the circular groove 102 ensures more even diffusion of light emitted by the light-emitting unit 4 as it passes through the transparent substrate 1. The inherent symmetry of the circular structure helps evenly distribute light in all directions, reducing the occurrence of hot spots and dark areas. The square groove 102 allows for more precise control of the light propagation path. Because the square structure has well-defined boundaries, it is easier to guide and confine light in specific directions, reducing light crosstalk. Both circular and square grooves 102 have their own unique benefits. The circular groove 102 focuses more on even light diffusion and reducing stress concentration, while the square groove 102 focuses more on precise light control and improving module structural stability. In practical applications, the most appropriate groove 102 shape can be selected based on specific needs and module design.

[0043] In this embodiment, the transparent substrate 1 is made of one of glass, PC, PET, PI, or PMMA. Glass, PC, PET, PI, and PMMA all have extremely high light transmittance, ensuring that light emitted by the light-emitting unit 4 efficiently passes through the transparent substrate 1, minimizing light loss. PC stands for polycarbonate, a high-molecular polymer containing carbonate groups in its molecular chain; PET stands for polyethylene terephthalate, a high-molecular polymer; PI stands for polyimide, a high-performance organic polymer; and PMMA, a high-molecular polymer chemically known as polymethyl methacrylate, also known as organic glass or acrylic. In this embodiment, the transparent substrate 1 is made of glass. Glass has high heat resistance and can withstand the heat generated by the light-emitting unit 4, ensuring stable operation of the module in high-temperature environments. Choosing glass as the material for the transparent substrate 1 ensures high light transmittance and excellent mechanical properties. This helps maintain the high light transmittance and stability of the backlight module, while also improving the overall quality of the module. In other embodiments, the transparent substrate 1 may also be made of materials such as PC, PET, PI, PMMA, etc.

[0044] It should be noted that the isolation portion 2 in this embodiment is made of a light-shielding material. The isolation portion 2, made of the light-shielding material, separates the transparent substrate 1 into several independent regions 101, each region 101 facing a corresponding light-emitting unit 4. When the light-emitting unit 4 is operating, the light generated by it is confined to the corresponding region 101, reducing crosstalk between different regions 101. Because the light from each light-emitting unit 4 is confined to its corresponding region 101 and the regions 101 are separated by the light-shielding material, the backlight module can produce a more uniform backlight. This helps improve the visual effect of the display and reduce visual fatigue. At the same time, the light-shielding material can effectively absorb or block light from adjacent light-emitting units 4, thereby reducing interference from background light. This helps improve the contrast of the display and make the image clearer and sharper. In this embodiment, the isolation portion 2 is made of metal. The metal isolation portion 2 effectively blocks light and prevents crosstalk between different light-emitting units 4. Due to the high density and reflectivity of metal, it can absorb or reflect most of the light, ensuring that the light from each light-emitting unit 4 is confined to its corresponding region.

[0045] It should be noted that the transparent substrate 1 and the isolation portion 2 of this embodiment are respectively made of glass and metal, and the isolation portion 2 and the transparent substrate 1 are made into one piece through a process such as casting and melting.

[0046] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0048] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0049] Although the present invention has been described with reference to the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and variations based on the above content. Therefore, all such substitutions, modifications and variations are included within the spirit and scope of the appended claims.

Claims

1. A structure for improving light crosstalk in a backlight module, characterized in that: It includes a transparent substrate, an isolation part, and a light board arranged below the transparent substrate. The isolation part is arranged in the transparent substrate and divides the transparent substrate into several areas in a grid shape. The light board includes several light-emitting units arranged in a matrix, and the areas correspond to the light-emitting units one by one.

2. The structure for improving light crosstalk in a backlight module according to claim 1, wherein: The isolation portion extends from one surface to the other surface of the transparent substrate along a height direction.

3. The structure for improving light crosstalk in a backlight module according to claim 2, wherein: The isolation portion protrudes from, is sunken into, or is flush with the surface.

4. The structure for improving light crosstalk in a backlight module according to claim 1, wherein: The areas are of the same size.

5. The structure for improving light crosstalk in a backlight module according to claim 1, wherein: The thickness of the isolation portion is 0.01mm to 0.2mm.

6. The structure for improving light crosstalk in a backlight module according to claim 1, wherein: A reflective film is provided on a surface of the partition facing the region.

7. The structure for improving light crosstalk in a backlight module according to claim 1, wherein: A plurality of grooves are provided on a side of the transparent substrate close to the light board, and the light emitting units extend into the grooves one by one.

8. The structure for improving light crosstalk in a backlight module according to claim 7, wherein: The shape of the groove is one of circular and square.

9. The structure for improving light crosstalk in a backlight module according to claim 1, wherein: The material of the transparent substrate is one of glass, PC, PET, PI and PMMA.

10. The structure for improving light crosstalk in a backlight module according to claim 1, wherein: The isolation portion is made of a light-shielding material.

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