Backlight module structure

Abstract

The utility model relates to a backlight module structure which comprises an iron frame, a rubber frame, a quantum dot optical film, a lighting effect enhancing assembly and a circuit board with a plurality of blue light-emitting parts, and the circuit board is arranged at the bottom of the iron frame and enables blue light emitted by the blue light-emitting parts to be emitted towards the top of the iron frame. At least three side edges of the iron frame are provided with containing grooves with notches facing the middle of the iron frame, the edges of the quantum dot optical film are correspondingly inserted into the containing grooves, the quantum dot optical film covers a light emitting path of the blue light-emitting part, the rubber frame is clamped with the upper end of the iron frame, and the blue light-emitting part is arranged on the rubber frame. The lighting effect enhancing assembly is arranged between the rubber frame and the quantum dot optical film. According to the utility model, the edge of the quantum dot optical film is inserted into the accommodating groove of the iron frame, so that the edge of the quantum dot optical film is located in a relatively closed space, and blue light leakage at the edge of the quantum dot optical film is effectively reduced. And meanwhile, a lighting effect enhancing assembly is arranged, so that the brightness and uniform distribution of light are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of blue light improvement, and particularly relates to a backlight module structure. Background Art

[0002] In the field of liquid crystal display technology, a blue light emitting component is often used as a backlight source, and then the blue light emitted by the blue light emitting component is converted into white light through a quantum dot optical film. The principle is that the quantum dot optical film contains red and green quantum dots. The blue light emitting component in the backlight module emits blue light. When the blue light passes through the quantum dot optical film, a part of the blue light is converted into red light by the red quantum dots, and a part of the blue light is converted into green light by the green quantum dots. The un-converted blue light, together with the green light and red light converted by the quantum dots, forms white light, which becomes the backlight source of the liquid crystal display screen.

[0003] However, during the manufacturing and cutting processes of the quantum dot optical film, the quantum dots at its edges may be damaged. The light absorption ability of these damaged quantum dots is different from that of the quantum dots in the middle area of the film, resulting in their inability to absorb blue light well. At the same time, due to the limitation of the cutting process, the distribution of quantum dots in the edge area may not be as uniform as that in the central area, which will also affect its absorption and conversion efficiency of blue light. Therefore, when the blue light emitted by the blue light emitting component passes through the quantum dot optical film, the red, green, and blue light in the edge area of the quantum dot optical film cannot be well mixed, and thus a blue light edge (blue edge) is generated at the edge of the quantum dot optical film. And blue light is a kind of visible light that has been proven to be harmful to human eyes. Therefore, it is necessary to design a backlight module structure to prevent blue light from leaking out from the edge of the quantum dot optical film. In addition, due to the complexity of the internal structure of the backlight module, how to ensure the blue light filtering effect while maintaining the brightness and uniformity of the light is also an urgent problem to be solved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a backlight module structure. By inserting the edge of the quantum dot optical film into the accommodation groove of the iron frame, the edge of the quantum dot optical film is in a relatively enclosed space, effectively reducing the blue light leakage at the edge of the quantum dot optical film. At the same time, a light effect enhancement component is also provided to ensure the brightness and uniform distribution of the light.

[0005] A backlight module structure includes an iron frame, a rubber frame, a quantum dot optical film, a light effect enhancement component, and a circuit board having a number of blue light emitting elements. The circuit board is disposed at the bottom of the iron frame, such that the blue light emitted by the blue light emitting elements is emitted towards the top of the iron frame. At least three sides of the iron frame are provided with accommodation grooves with the notch facing towards the middle of the iron frame. The edge of the quantum dot optical film is correspondingly inserted into the accommodation grooves. The quantum dot optical film covers the light emitting path of the blue light emitting elements. A diffusion plate is provided between the blue light emitting elements and the quantum dot optical film. The rubber frame is snap-fitted with the upper end of the iron frame. The light effect enhancement component is disposed between the rubber frame and the quantum dot optical film.

[0006] In the above technical solution, the iron frame serves as the basic frame of the entire backlight module. At least three sides of it are provided with accommodation grooves with the notch facing towards the middle. By inserting the edge of the quantum dot optical film into the accommodation grooves of the iron frame, an almost seamless covering layer is formed, such that the edge of the quantum dot optical film is in a relatively enclosed space, effectively blocking the direct leakage of the blue light emitted by the blue light emitting elements at the edge. At the same time, the snap-fitting design of the rubber frame and the upper end of the iron frame consolidates the overall structure, enabling the backlight module to withstand certain external force impacts and vibrations, and extending the service life. During use, the blue light emitted by the blue light emitting elements passes through the quantum dot optical film, and then the quantum dot optical film converts the blue light into red light and green light with high color purity. The design of the light effect enhancement component can enhance the brightness and uniformity of the light processed by the quantum dot optical film, thereby improving the overall light effect and color performance of the backlight module. In this utility model, by inserting the edge of the quantum dot optical film into the accommodation grooves of the iron frame, the edge of the quantum dot optical film is in a relatively enclosed space, effectively reducing the blue light leakage at the edge of the quantum dot optical film. At the same time, the brightness of the light is also increased and the uniform distribution of the light is achieved through the light effect enhancement component.

[0007] Further, the accommodation groove includes a first surface, and a second surface and a third surface that are respectively perpendicular to the first surface. The first surface faces the notch. There are gaps between the two corresponding side surfaces of the quantum dot optical film and the first surface and the second surface respectively.

[0008] In the above technical solution, due to the property of thermal expansion and contraction of the quantum dot optical film, the size of the accommodation groove needs to be set larger than the size of the quantum dot optical film. That is, when the quantum dot optical film is placed in the accommodation groove, there are assembly gaps between the two corresponding side surfaces of the quantum dot optical film and the first surface and the second surface, such that when the quantum dot optical film undergoes thermal expansion and contraction, the accommodation groove can have extra space to accommodate the deformed quantum dot optical film, avoiding damage to the quantum dot optical film.

[0009] Further, the second surface or the third surface is coated with light-shielding glue.

[0010] In the above technical solution, the main function of the light-shielding glue is to absorb or reflect light in the blue light band, thereby reducing potential harm to the user's eyes. The light-shielding glue is coated on the second surface or the third surface of the accommodation groove to further block the blue light that may leak from the edge of the quantum dot optical film.

[0011] Further, an adhesive is coated on the third surface.

[0012] In the above technical solution, the application of the adhesive enables a more firm bond to be formed between the quantum dot optical film and the third surface of the accommodation groove, which helps to prevent the quantum dot optical film from shifting or falling off due to vibration or external force during use, and also improves the structural stability of the entire backlight module.

[0013] Further, the iron frame is provided with a boss on the side wall above the accommodation groove, and the rubber frame is arranged on the boss.

[0014] In the above technical solution, the design of the boss provides a stable support platform for the rubber frame. As an important component in the backlight module, by arranging the rubber frame on the boss, the connection between the rubber frame and the iron frame can be ensured to be more firm, thereby enhancing the structural stability of the entire backlight module.

[0015] Further, the rubber frame is provided with an extending portion extending outward, and when the rubber frame is arranged on the boss, the extending portion abuts against the upper end surface of the iron frame.

[0016] In the above technical solution, the abutment of the extending portion against the upper end surface of the iron frame helps to reduce the gap between the two, thereby improving the sealing performance of the backlight module, preventing impurities such as dust and moisture from entering the interior of the backlight module through the gap, and protecting the internal components from damage.

[0017] Further, a diffusion plate is provided between the blue light emitting component and the quantum dot optical film.

[0018] In the above technical solution, the blue light emitted by the blue light emitting component first undergoes uniform diffusion through the diffusion plate to ensure that the light can cover the entire surface of the quantum dot optical film, and then the quantum dot optical film performs spectral conversion. This process not only improves the utilization efficiency of the light, but also makes the light propagation more uniform, which helps to improve the color saturation and uniformity of the picture.

[0019] Further, a light splitting film is provided on the side of the quantum dot optical film facing away from the diffusion plate.

[0020] In the above technical solution, the light splitting film can evenly disperse and distribute the light, so that the light emitted by the blue light emitting component can maintain a high uniformity when reaching the liquid crystal screen, which helps to improve the visual effect of the picture and reduce visual fatigue caused by uneven light distribution.

[0021] Further, the light effect enhancement component includes a brightness enhancement film and a light guide film. The brightness enhancement film is parallel to the light guide film, and the brightness enhancement film is located above the light guide film.

[0022] In the above technical solution, the brightness enhancement film is a thin film with special optical properties. Its main function is to refract and reflect light through a micro prism structure, so that the light is emitted more concentratedly forward. The light guide film can diffuse the light that has been split by the beam splitting film again, making the distribution of light on the liquid crystal screen more uniform. This uniform light distribution helps to reduce the difference between the dark areas and bright areas in the picture and improve the overall visual effect of the picture. The brightness enhancement film can effectively collect and enhance the light emitted from the quantum dot optical film and the beam splitting film, thereby improving the overall brightness of the backlight module.

[0023] Further, a diffusion plate is provided between the quantum dot optical film and the light effect enhancement component.

[0024] In the above technical solution, by arranging the diffusion plate between the quantum dot optical film and the light effect enhancement component, the blue light emitting element can be directly opposite to the quantum dot optical film. The quantum dot optical film can efficiently convert blue light into red light and green light with high color purity, and then the diffusion plate scatters and equalizes the light converted by the quantum dot optical film, thereby achieving uniform light distribution.

[0025] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0026] 1. A receiving groove is provided on the side of the iron frame, and the edge of the quantum dot optical film is inserted into the receiving groove of the iron frame, forming an almost seamless covering layer, so that the edge of the quantum dot optical film is in a relatively enclosed space, effectively blocking the direct leakage of blue light emitted by the blue light emitting element at the edge.

[0027] 2. A light effect enhancement component is provided to ensure the brightness and uniform distribution of light through the light effect enhancement component. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the iron frame of the embodiment of the present utility model.

[0029] Figure 2 It is a schematic diagram of the structure of the backlight module of the embodiment of the present utility model.

[0030] Explanation of the Reference Numerals in the Drawings

[0031] 1. Iron frame; 101. Receiving groove; 1011. First surface; 1012. Second surface; 1013. Third surface; 102. Boss

[0032] 2. Glue frame; 201. Extension part;

[0033] 3. Quantum dot optical film;

[0034] 4. Light efficiency enhancement component; 401. Brightness enhancement film; 402. Light enhancement film;

[0035] 5. Circuit board; 501. Blue light emitting component;

[0036] 6. Diffusion plate; 7. Beam splitting film. Specific implementation manner

[0037] The structure of the backlight module of the present utility model will be further described in detail below in conjunction with specific embodiments and the accompanying drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0038] Please refer to Figure 1 and Figure 2 , in a preferred embodiment, the structure of the backlight module of the present utility model includes an iron frame 1, a glue frame 2, a quantum dot optical film 3, a light efficiency enhancement component 4, and a circuit board 5 having a plurality of blue light emitting components 501. The circuit board 5 is disposed at the bottom of the iron frame 1 such that the blue light emitted by the blue light emitting components 501 is emitted towards the top of the iron frame 1. At least three sides of the iron frame 1 are provided with accommodation grooves 101 with the notch facing towards the middle of the iron frame 1. The edge of the quantum dot optical film 3 is correspondingly inserted into the accommodation groove 101. The quantum dot optical film 3 covers the light emitting path of the blue light emitting components 501. A diffusion plate 6 is disposed between the blue light emitting components 501 and the quantum dot optical film 3. The glue frame 2 is snap-fitted with the upper end of the iron frame 1. The light efficiency enhancement component 4 is disposed between the glue frame 2 and the quantum dot optical film 3.

[0039] In practical applications, the iron frame 1 serves as the basic framework of the entire backlight module. At least three of its sides are provided with accommodation grooves 101 with the notch facing the middle. By inserting the edge of the quantum dot optical film 3 into the accommodation groove 101 of the iron frame 1, an almost seamless covering layer is formed, making the edge of the quantum dot optical film 3 in a relatively enclosed space, effectively blocking the direct leakage of the blue light emitted by the blue light-emitting component 501 at the edge. At the same time, the snap-fit design between the rubber frame 2 and the upper end of the iron frame 1 consolidates the overall structure, enabling the backlight module to withstand a certain amount of external force impact and vibration, and extending the service life. When in use, the blue light emitted by the blue light-emitting component 501 passes through the quantum dot optical film 3, and then the quantum dot optical film 3 converts the blue light into red light and green light with high color purity. The design of the light effect enhancement component 4 can enhance the brightness and uniformity of the light processed by the quantum dot optical film 3, thereby improving the overall light effect and color performance of the backlight module. In the present utility model, by inserting the edge of the quantum dot optical film 3 into the accommodation groove 101 of the iron frame 1, the edge of the quantum dot optical film 3 is in a relatively enclosed space, effectively reducing the blue light leakage at the edge of the quantum dot optical film 3. At the same time, the brightness of the light is also increased and the uniform distribution of the light is achieved through the light effect enhancement component 4.

[0040] Specifically, the accommodation groove 101 includes a first surface 1011, a second surface 1012 and a third surface 1013 that are respectively perpendicular to the first surface 1011. The first surface 1011 faces the notch, and there are gaps between the two corresponding sides of the quantum dot optical film 3 and the first surface 1011 and the second surface 1012 respectively. Due to the characteristics of thermal expansion and contraction of the quantum dot optical film 3, the size of the accommodation groove 101 needs to be set larger than the size of the quantum dot optical film 3. That is, when the quantum dot optical film 3 is placed in the accommodation groove 101, there are assembly gaps between the two corresponding sides of the quantum dot optical film 3 and the first surface 1011 and the second surface 1012, so that when the quantum dot optical film 3 expands and contracts thermally, the accommodation groove 101 can have extra space to accommodate the deformed quantum dot optical film 3, avoiding damage to the quantum dot optical film 3.

[0041] Specifically, a light-shielding adhesive (not shown in the drawings) is coated on the second surface 1012 or the third surface 1013. Blue light has a certain damaging effect on the retinal cells of the human eye. Prolonged exposure to high-intensity blue light will cause visual fatigue and discomfort. The main function of the light-shielding adhesive is to absorb or reflect the light in the blue light band, thereby reducing the potential harm to the user's eyes. By coating the light-shielding adhesive on the second surface 1012 or the third surface 1013 of the accommodation groove 101, the blue light that may leak from the edge of the quantum dot optical film 3 is further blocked, thereby reducing the stimulation of the blue light to the user's eyes and increasing the comfort of the user when viewing the display screen.

[0042] Furthermore, the third surface 1013 is coated with an adhesive (not shown in the drawings). The application of the adhesive forms a more firm bond between the quantum dot optical film 3 and the third surface 1013 of the receiving groove 101, which helps to prevent the quantum dot optical film 3 from shifting or falling off due to vibration or external force during use, and also improves the structural stability of the entire backlight module. The adhesive usually has good weather resistance and aging resistance, and can maintain a stable bonding effect during long-term use. This means that the bond between the quantum dot optical film 3 and the receiving groove 101 will not weaken or fail over time, thereby enhancing the durability and service life of the backlight module.

[0043] Please refer to Figure 2 , the iron frame 1 is provided with a boss 102 on the side wall above the receiving groove 101, and the rubber frame 2 is arranged on the boss 102. The design of the boss 102 provides a stable support platform for the rubber frame 2. As an important component in the backlight module, by arranging the rubber frame 2 on the boss 102, it can ensure a more firm connection between the rubber frame 2 and the iron frame 1, thereby enhancing the structural stability of the entire backlight module.

[0044] It should be noted that the rubber frame 2 is provided with an extending portion 201 extending outward. When the rubber frame 2 is arranged on the boss 102, the extending portion 201 abuts against the upper end surface of the iron frame 1. The design of the extending portion 201 provides an additional support point for the connection between the rubber frame 2 and the iron frame 1 on the one hand, and on the other hand, the abutment of the extending portion 201 against the upper end surface of the iron frame 1 helps to reduce the gap between the two, thereby improving the sealing performance of the backlight module and preventing impurities such as dust and moisture from entering the interior of the backlight module through the gap, protecting the internal components from damage.

[0045] In an embodiment, a diffusion plate 6 is provided between the blue light-emitting element 501 and the quantum dot optical film 3. The blue light emitted by the blue light-emitting element 501 is first evenly diffused by the diffusion plate 6 to ensure that the light can cover the entire surface of the quantum dot optical film 3, and then the quantum dot optical film 3 performs spectral conversion. This process not only improves the light utilization efficiency, but also makes the light propagation more uniform, which helps to improve the color saturation and uniformity of the picture.

[0046] Furthermore, a light splitting film 7 is provided on the side of the quantum dot optical film 3 facing away from the diffusion plate 6. The light splitting film 7 can evenly disperse and distribute the light, so that the light emitted by the blue light-emitting element 501 can maintain a high uniformity when reaching the liquid crystal screen, which helps to improve the visual effect of the picture and reduce visual fatigue caused by uneven light distribution.

[0047] Please refer to Figure 2, the light effect enhancement component 4 includes a brightness enhancement film 401 and a light guide film 402. The brightness enhancement film 401 and the light guide film 402 are parallel to each other, and the brightness enhancement film 401 is located above the light guide film 402. The brightness enhancement film 401 is a film with special optical properties, and its main function is to refract and reflect light through a microprism structure, so that the light is emitted more concentratedly forward. The light guide film 402 can diffuse the light after being split by the beam splitting film 7 again, so that the distribution of light on the liquid crystal screen is more uniform. This uniform light distribution helps to reduce the difference between the dark areas and the bright areas in the picture and improve the overall visual effect of the picture. The brightness enhancement film 401 is usually used to further improve the overall brightness of the backlight module. It can effectively collect and enhance the light emitted from the quantum dot optical film 3 and the beam splitting film 7, thereby improving the overall brightness of the backlight module.

[0048] In another embodiment, a diffusion plate 6 is provided between the quantum dot optical film 3 and the light effect enhancement component 4. By arranging the diffusion plate 6 between the quantum dot optical film 3 and the light effect enhancement component 4, the blue light emitting element 501 can be directly opposite to the quantum dot optical film 3, and the blue light emitted by the blue light emitting element 501 directly passes through the quantum dot optical film 3, so that the quantum dot optical film 3 converts the blue light emitted by the blue light emitting element 501 into red light and green light, and then the diffusion plate 6 scatters and equalizes the light converted by the quantum dot optical film 3, thereby realizing the uniform distribution of light.

[0049] It should be noted that the beam splitting film 7, the brightness enhancement film 401 and the light guide film 402 also have the characteristics of thermal expansion and contraction. During assembly, it is necessary to ensure that there is an assembly gap between the iron frame 1 and the beam splitting film 7, the brightness enhancement film 401 and the light guide film 402, so that there is enough space between the iron frame 1 and the beam splitting film 7, the brightness enhancement film 401 and the light guide film 402 for the beam splitting film 7, the brightness enhancement film 401 and the light guide film 402 to deform.

[0050] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 of the present invention.

[0051] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0052] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0053] Although the description of the present utility model is made in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included within the spirit and scope of the appended claims.

Claims

1. A backlight module structure, characterized in that: It includes an iron frame, a plastic frame, a quantum dot optical film, a light effect enhancement component and a circuit board with a plurality of blue light-emitting components. The circuit board is arranged at the bottom of the iron frame, and the blue light emitted by the blue light-emitting components is emitted toward the top of the iron frame. At least three sides of the iron frame are provided with a receiving groove with a notch facing the middle of the iron frame. The edge of the quantum dot optical film is correspondingly inserted into the receiving groove. The quantum dot optical film covers the light emitting path of the blue light-emitting components. The plastic frame is engaged with the upper end of the iron frame, and the light effect enhancement component is arranged between the plastic frame and the quantum dot optical film.

2. The backlight module structure according to claim 1, characterized in that: The accommodating groove includes a first surface and a second surface and a third surface respectively perpendicular to the first surface, the first surface is opposite to the notch, and there are gaps between the two side surfaces corresponding to the quantum dot optical film and the first surface and the second surface respectively.

3. The backlight module structure according to claim 2, characterized in that: The second surface or the third surface is coated with light-shielding glue.

4. The backlight module structure according to claim 2, characterized in that: The third surface is coated with an adhesive.

5. The backlight module structure according to claim 1, characterized in that: The iron frame is provided with a boss on the side wall located above the containing groove, and the plastic frame is arranged on the boss.

6. The backlight module structure according to claim 5, characterized in that: The rubber frame is provided with an extension portion extending outwards, and when the rubber frame is arranged on the boss, the extension portion abuts against the upper end surface of the iron frame.

7. The backlight module structure according to claim 1, characterized in that: A diffusion plate is provided between the blue light emitting element and the quantum dot optical film.

8. The backlight module structure according to claim 7, characterized in that: A beam splitting film is provided on a side of the quantum dot optical film away from the diffusion plate.

9. The backlight module structure according to claim 8, characterized in that: The light effect enhancement component comprises a brightness enhancement film and a luminance enhancement film, the brightness enhancement film and the luminance enhancement film are parallel to each other, and the brightness enhancement film is located above the luminance enhancement film.

10. The backlight module structure according to claim 1, characterized in that: A diffusion plate is provided between the quantum dot optical film and the light effect enhancement component.

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