Reflecting film with optical structure
By setting optical structures such as lamp holes, micropores, heat dissipation layer and humidity-resistant and temperature-resistant layer in the reflective film, the problem of unstable performance of the existing reflective film in high temperature and high humidity environments is solved, and a higher reflectivity and more uniform light distribution are achieved.
Patent Information
- Application Number
- CN202421894519.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-06
AI Technical Summary
The existing reflective films have unstable performance in high temperature or high humidity environments, low reflectivity and uneven light distribution.
A reflective film with an optical structure is designed, including a main film body, a main folded edge and a secondary folded edge. By setting up lamp holes, micro-holes, heat dissipation layer, moisture-resistant and heat-resistant layer, a reflective film base and a protective layer, the temperature and humidity resistance and light reflectivity of the reflective film are improved.
The performance of the reflective film in high temperature and high humidity environment is achieved, and the problems of reduced reflectivity and uneven light rays are avoided. At the same time, the toughness and light reflectivity of the reflective film are improved, so that the reflected light is more uniform and soft.
Smart Images
Figure CN222913904U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reflective films, in particular to a reflective film with an optical structure. Background Art
[0002] The backlight module of a liquid crystal TV usually consists of multiple LED lights or other light sources. The light emitted by these light sources needs to be evenly distributed through structures such as a light guide plate. However, during the light propagation process, a part of the light often leaks out or deviates from the predetermined direction. Therefore, a reflective film is usually provided to reflect the light deviating from the direction back to the light guide plate or the liquid crystal panel, thereby improving the overall utilization rate of the light source.
[0003] However, in the prior art, the reflective film often has the problems of low reflectivity and uneven light distribution. The reasons are, on the one hand, affected by the material properties of the reflective film and the structure of the reflective film; on the other hand, during the use of the reflective film, it is often in a high-temperature or high-humidity environment. The humid and hot environment will have an adverse impact on the performance of the reflective film, making the performance of the reflective film unstable, resulting in a decrease in the reflectivity of the reflective film or uneven reflected light. For example, too high humidity may cause the reflective film material to absorb moisture and expand, resulting in low reflectivity and uneven light distribution of the reflective film. Therefore, it is necessary to provide a reflective film with stable performance and uniform reflected light. Summary of the Utility Model
[0004] Aiming at the technical problems of low reflectivity and uneven light distribution of the reflective film caused by the material properties of the reflective film and the structure of the reflective film or the high-temperature and high-humidity environment in the prior art, the utility model provides a reflective film with an optical structure.
[0005] A reflective film with an optical structure, the reflective film includes a main film body and a main hem provided at the four peripheral edges of the main film body; a plurality of lamp holes are arranged in a rectangular array on the main film body, and a light leakage area formed by a plurality of light leakage holes is provided on the main hem; a secondary hem is provided at the edge of the main hem, and a plurality of hanging ears are arranged at intervals on the edge of the secondary hem, and strip-shaped holes are provided on the hanging ears; the main film body, the main hem and the secondary hem are integrally formed, and the main film body, the main hem and the secondary hem are all composed of a heat dissipation layer, a humidity and temperature resistant layer, a reflective film substrate and a protective layer arranged in sequence; the reflective film substrate includes a substrate, a reflective film is provided on the substrate, and a reflective coating is coated on the reflective film; the humidity and temperature resistant layer is arranged on the side of the substrate away from the reflective coating; the protective layer is arranged on the reflective coating; a plurality of organic hollow particles are dispersedly filled in the substrate, and a plurality of inorganic particles are dispersedly filled in both the reflective coating and the protective layer.
[0006] Furthermore, a number of micropores are provided on the main film body outside each of the lamp holes.
[0007] Furthermore, the conical reflector includes a bottom surface integrally formed with the substrate and four triangular reflecting surfaces provided on the bottom surface, and the reflecting diaphragm is adhered to the triangular reflecting surfaces through an adhesive.
[0008] Furthermore, the inorganic particles include at least one of titanium dioxide, aluminum oxide, calcium sulfate, and barium sulfate, and the particle size of the inorganic particles is 0.1 μm - 3 μm.
[0009] Furthermore, the organic hollow particles include at least one of polystyrene hollow particles, polystyrene hollow particles, polyester acrylate hollow particles, and polyacrylic acid hollow particles.
[0010] Furthermore, the reflecting diaphragm is a white reflecting diaphragm, the reflecting coating is a nano-reflecting coating, and the thickness of the reflecting coating is 10 μm - 15 μm.
[0011] Furthermore, the moisture and temperature resistant layer is a thermosetting acrylic resin layer, and a heat conductive medium is dispersedly filled in the heat dissipation layer.
[0012] Furthermore, the thicknesses of both the moisture and temperature resistant layer and the protective layer are 15 μm - 25 μm, and the thickness of the heat dissipation layer is 10 μm - 30 μm.
[0013] Furthermore, the main film body is a rectangular film body, and the main folding edges include a first folding edge, a second folding edge, a third folding edge, and a fourth folding edge sequentially arranged along the edge of the main film body; the first folding edge, the second folding edge, the third folding edge, and the fourth folding edge are all bent inward to form an arched structure.
[0014] Furthermore, the folding direction of the secondary folding edge of the first folding edge is the same as that of the secondary folding edge of the third folding edge, the folding direction of the secondary folding edge of the first folding edge is different from that of the secondary folding edge of the second folding edge, and the folding direction of the secondary folding edge of the second folding edge is the same as that of the secondary folding edge of the fourth folding edge.
[0015] The beneficial effects of the present utility model are as follows: The present utility model provides a reflective film with an optical structure. Through the arrangement of the heat dissipation layer and the moisture and temperature resistant layer, while the heat on the reflective film can be dissipated, it has good moisture and temperature resistance performance, maintaining the stability of the performance of the reflective film; avoiding the reduction of the reflectivity of the reflective film or the unevenness of the reflected light due to high humidity or temperature; at the same time, organic hollow particles are dispersedly filled in the substrate of the reflective film matrix to increase the toughness of the reflective film and the reflectivity of the light entering the substrate, and inorganic particles are dispersedly filled in both the reflective coating and the protective layer, which can not only improve the reflectivity of the light, but also make the protective layer have a high stiffness, and the reflective coating increases the scattering of the light incident on the reflective coating while maintaining the original reflection effect, so that the light reflected by the reflective film is more uniform and soft.
[0016] In addition, through the light leakage area formed by setting light leakage holes in the main hem, when the reflective film is used, part of the light can leak out from the light leakage holes, which can weaken the local brightness of the reflective film and effectively avoid the phenomenon of the bright edge of the reflective film. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of a reflective film with an optical structure provided by the present utility model;
[0018] Figure 2 is a partial cross-sectional structural diagram of the main film body, the main hem and the secondary hem provided by the present utility model with an integrally formed setting.
[0019] REFERENCE SIGNS
[0020] 1. Main film body; 2. Main hem; 21. First hem; 22. Second hem; 23. Third hem; 24. Fourth hem; 3. Lamp hole; 4. Light leakage hole; 5. Micro hole; 6. Secondary hem; 7. Hanging ear; 8. Heat dissipation layer; 9. Moisture and temperature resistant layer; 10. Reflective film matrix; 101. Substrate; 102. Reflective film sheet; 103. Reflective coating; 11. Protective layer; 12. Organic hollow particle; 13. Inorganic particle; 14. Heat conducting medium. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] In order to enable those skilled in the art of the present technology to better understand the solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings. The described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.
[0022] Reference Figure 1As shown in the figure, the present utility model provides a reflective film with an optical structure. The reflective film is located at the bottom of the backlight module of a liquid crystal TV and can be used to reflect the light leaking through the light guide plate back down and back to the panel side.
[0023] Specifically, the reflective film includes a main film body 1 and main folded edges 2 provided at the four peripheral edges of the main film body 1. A light leakage area formed by a number of light leakage holes 4 is provided on the main folded edge 2; when the reflective film is in use, part of the light can leak out from the light leakage holes 4, weakening the local brightness of the reflective film, thereby achieving the effect of removing the bright edge of the reflective film. In this embodiment, the length of the reflective film is 969.39 mm and the width is 548.56 mm.
[0024] A secondary folded edge 6 is provided at the edge of each of the main folded edges 2. A number of hanging ears 7 are spaced apart on the edge of the secondary folded edge 6, and strip-shaped holes are provided on each of the hanging ears 7. The settings of the main folded edge 2, the secondary folded edge 6, and the hanging ears 7 enable the reflective film to be installed in various corresponding structures in a fixed form. In this implementation, the aperture length of the strip-shaped hole is 21 mm and the width is 3 mm.
[0025] A number of lamp holes 3 are arranged in a rectangular array on the main film body 1. A number of micro holes 5 are provided on the main film body 1 outside each of the lamp holes 3. The reflective film is installed on the LED lamp beads through the lamp holes 3. The rectangular array arrangement of the lamp holes 3 enables the light to form a more uniform light field during the reflection process, avoiding visual differences and image distortion caused by uneven light distribution. The micro holes 5 can increase the scattering area of the light and make the light more evenly distributed on the entire main film body through the scattering effect of the micro holes, which helps to reduce the appearance of light spots and dark areas and improve the uniformity and visual effect of the display screen. In this embodiment, the length of the lamp hole 3 is 19 mm and the width is 15.5 mm. Among the lamp holes 3 in the rectangular array, the distance between the center points of adjacent lamp holes 3 in the horizontal array is 126.28 mm, and the distance between the center points of adjacent lamp holes 3 in the radial array is 147 mm.
[0026] Among them, the main film body 1 is a rectangular film body. The main folded edge 2 includes a first folded edge 21, a second folded edge 22, a third folded edge 23, and a fourth folded edge 24 arranged in sequence along the edge of the main film body 1; when in use, the first folded edge 21, the second folded edge 22, the third folded edge 23, and the fourth folded edge 24 are all bent inward to form an arched structure, so that the first folded edge 21, the second folded edge 22, the third folded edge 23, and the fourth folded edge 24 respectively form a certain angle with the main film body 1.
[0027] In this embodiment, the bending direction of the secondary fold of the first fold edge 21 is the same as that of the secondary fold 6 of the third fold edge 23. The bending direction of the secondary fold 6 of the first fold edge 21 is different from that of the secondary fold 6 of the second fold edge 22, and the bending direction of the secondary fold 6 of the second fold edge 22 is the same as that of the secondary fold 6 of the fourth fold edge 24.
[0028] Reference Figure 2 As shown, the main film body 1, the main fold edge 2, and the secondary fold edge 6 are integrally formed. The main film body 1, the main fold edge 2, and the secondary fold edge 6 are all composed of a heat dissipation layer 8, a moisture and temperature resistant layer 9, a reflective film substrate 10, and a protective layer 11 arranged in sequence.
[0029] Among them, the reflective film substrate 10 includes a substrate 101. A reflective film sheet 102 is provided on the substrate 101, and a reflective coating 103 is coated on the reflective film sheet 102. The moisture and temperature resistant layer 9 is arranged on the side of the substrate 101 away from the reflective coating 103, and the protective layer 11 is arranged on the reflective coating 103. In this embodiment, the substrate 101 is a light-transmitting substrate; the reflective film sheet 103 is a white reflective film sheet, the reflective coating 104 is a nano-reflective coating, and the thickness of the reflective coating 104 is 10 μm - 15 μm.
[0030] A number of organic hollow particles 12 are dispersedly filled in the substrate 101. Through the arrangement of the organic hollow particles 12, small holes are formed in the substrate 101. When the reflective film is squeezed or bent, the organic hollow particles 12 undergo reversible deformation, and can partially absorb the squeezing force received by the reflective film, increasing the flexibility and stiffness of the reflective film 330.
[0031] In this embodiment, the organic hollow particles 12 include at least one of polystyrene hollow particles, polystyrene hollow particles, polyester acrylate hollow particles, and polyacrylic acid hollow particles. The outer diameter of the organic hollow particles is 0.1 μm - 25 μm, and the inner diameter of the organic hollow particles is 0.05 μm - 10 μm.
[0032] When the reflective film 330 is squeezed or bent, the organic hollow particles 338 are stressed and undergo reversible deformation, and can absorb some of the squeezing force received by the reflective film 330, increasing the toughness and stiffness of the reflective film 330. At the same time, the organic hollow particles 338 have two reflective interfaces, namely an outer surface and an inner surface, which can improve the reflectivity of the light entering the reflective film substrate 101.
[0033] A number of inorganic particles 13 are dispersedly filled in both the reflective coating 104 and the protective layer 11. In this embodiment, the inorganic particles 13 include at least one of titanium dioxide, aluminum oxide, calcium sulfate, and barium sulfate, and the particle size of the inorganic particles 13 is 0.1 μm - 3 μm.
[0034] By dispersedly filling the inorganic particles 13 in the protective layer 11, the protective layer 11 has a high stiffness, which can effectively improve the scratch resistance, impact resistance, and bending resistance of the protective layer 11; at the same time, by dispersedly filling the inorganic particles 13 in the reflective coating 104, while maintaining the original reflection effect of the reflective coating 104, the scattering of the light incident on the reflective coating 104 is increased, so that the light reflected by the reflective film is more uniform and soft. In addition, the inorganic microparticles 13 can form multiple reflection surfaces in each layer, which is beneficial to the reflection of incident light; and the inorganic particles 13 have excellent thermal stability, can maintain a stable structure in a high-temperature environment, and can effectively prevent the protective layer 11 and the reflective coating 103 from deforming or failing due to thermal expansion or thermal contraction.
[0035] In this embodiment, the moisture and temperature resistant layer 9 is a thermosetting acrylic resin layer with excellent moisture and heat resistance performance and can be used normally in a high humidity and high temperature environment. A heat conduction medium 14 is dispersedly filled in the heat dissipation layer 8. In this embodiment, the thicknesses of both the moisture and temperature resistant layer 9 and the protective layer 11 are 15 μm - 25 μm, and the thickness of the heat dissipation layer 8 is 10 μm - 30 μm; the heat conduction medium 14 is ceramic microparticles.
[0036] Through the settings of the heat dissipation layer 8 and the moisture and temperature resistant layer 9, while the heat on the reflective film can be dissipated, it has good temperature and moisture resistance performance, avoiding the situation that the reflectivity of the reflective film decreases or the reflected light is uneven when the humidity or temperature is high.
[0037] Preferably, a number of convex conical reflectors are provided on one side of the substrate 101. The conical reflector 102 includes a bottom surface integrally formed with the substrate 101 and four triangular reflecting surfaces provided on the bottom surface. The reflective film 103 is adhered to the triangular reflecting surfaces through an adhesive.
[0038] Through the settings of the four triangular reflecting surfaces on the conical reflector, the light reflectivity of the surface of the reflective coating 104 adhered to the four triangular reflecting surfaces can be effectively improved, strengthening the light reflection performance of the reflective film and being beneficial to reducing the loss of the light source.
[0039] The utility model provides a reflective film with an optical structure, which is improved based on the structure and properties of the reflective film, and optical structures such as a lamp hole 3, a micropore 5, a heat dissipation layer 8, a humidity and temperature resistant layer 9, a reflective film substrate 10, and a protective layer 11 are provided; and through the settings of the heat dissipation layer 8 and the humidity and temperature resistant layer 9, the situation that the reflectivity of the reflective film is reduced or the reflected light is uneven due to high humidity or temperature of the reflective film is avoided. At the same time, organic hollow particles 12 are dispersedly filled in the substrate of the reflective film substrate, and inorganic particles 13 are dispersedly filled in both the reflective coating 104 sheets and the protective layer 11, so that the reflective film maintains stiffness and flexibility, improves the light reflectivity of the reflective film, and makes the light reflected by the reflective film more uniform and soft.
[0040] The preferred embodiments of the present utility model disclosed above are only used to help explain the present utility model, and do not limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, other modifications and changes can be made. The embodiments selected and specifically described in this specification are for better explaining the principle and practical application of the present utility model, so that those skilled in the art can well understand and utilize the present utility model. It is not a limitation of the present utility model, and any simple deformed scheme of the present utility model belongs to the protection scope of the present utility model.
Claims
1. A reflective film having an optical structure, characterized in that: The reflective film comprises a main film body and a main folded edge arranged on the edges of the main film body; a plurality of lamp holes are arranged in a rectangular array on the main film body, and a light leakage area formed by a plurality of light leakage holes is arranged on the main folded edge; a secondary folded edge is arranged on the edge of each main folded edge, and a plurality of hanging ears are arranged at intervals on the edge of each secondary folded edge, and each hanging ear is provided with a strip hole; The main film body and the main folding edge and the secondary folding edge are integrally formed, and the main film body, the main folding edge and the secondary folding edge are composed of a heat dissipation layer, a moisture-resistant and temperature-resistant layer, a reflective film substrate and a protective layer which are arranged in sequence; The reflective film substrate comprises a substrate, a reflective film sheet is arranged on the substrate, and a reflective coating is coated on the reflective film sheet; The moisture-resistant and temperature-resistant layer is arranged on a side of the substrate away from the reflective coating; the protective layer is arranged on the reflective coating; a plurality of organic hollow particles are dispersed and filled in the substrate, and a plurality of inorganic particles are dispersed and filled in the reflective coating and the protective layer.
2. The reflective film with an optical structure according to claim 1, characterized in that: A plurality of micro holes are arranged on the main film body outside each of the lamp holes.
3. The reflective film with an optical structure according to claim 1, characterized in that: A plurality of protruding conical reflectors are arranged on one side of the substrate. The conical reflectors include a bottom surface integrally formed with the substrate and four triangular reflective surfaces arranged on the bottom surface. The reflective film is bonded to the triangular reflective surfaces by an adhesive.
4. The reflective film with an optical structure according to claim 1, characterized in that: The inorganic particles include at least one of titanium dioxide, aluminum oxide, calcium sulfate, and barium sulfate, and the particle size of the inorganic particles is 0.1 μm-3 μm.
5. The reflective film with an optical structure according to claim 1, characterized in that: The organic hollow particles include at least one of polystyrene hollow particles, polystyrene hollow particles, polyester acrylate hollow particles, and polyacrylic acid hollow particles.
6. The reflective film with an optical structure according to claim 1, characterized in that: The reflective film is a white reflective film, the reflective coating is a nano reflective coating, and the thickness of the reflective coating is 10 μm-15 μm.
7. The reflective film with an optical structure according to claim 1, characterized in that: The moisture-resistant and temperature-resistant layer is a thermosetting acrylic resin layer, and the heat dissipation layer is dispersedly filled with a heat-conducting medium.
8. The reflective film with an optical structure according to claim 1, characterized in that: The thickness of the moisture-resistant and temperature-resistant layer and the protective layer are both 15 μm-25 μm, and the thickness of the heat dissipation layer is 10 μm-30 μm.
9. The reflective film with an optical structure according to claim 1, characterized in that: The main film body is a rectangular film body, and the main folding edge includes a first folding edge, a second folding edge, a third folding edge and a fourth folding edge arranged in sequence along the edge of the main film body; the first folding edge, the second folding edge, the third folding edge and the fourth folding edge are all bent inward to form an arch structure.
10. The reflective film with an optical structure according to claim 9, characterized in that: The bending direction of the secondary fold of the first fold is the same as the bending direction of the secondary fold of the third fold, the bending direction of the secondary fold of the first fold is different from the bending direction of the secondary fold of the second fold, and the bending direction of the secondary fold of the second fold is the same as the bending direction of the secondary fold of the fourth fold.