Backlight module for television and television

Abstract

The utility model relates to the technical field of liquid crystal display, and discloses a backlight module for a television and the television. The backlight module comprises a back plate, and the heaven and earth side of the back plate is of an arc-shaped structure. The two lamp strips are arranged on the back plate and are parallel to the heaven and earth sides, and the multiple lamp beads on each lamp strip are arranged on the lamp strips according to the rule that the edges are sparse and the middles are dense; the reflector plate is adhered to the back plate and can expose the lamp beads on the lamp strip; the diffusion plate covers the reflector plate, the diffusion plate and the reflector plate form a cavity, the reflector plate is the lower surface of the cavity, the diffusion plate is the upper surface of the cavity, and a plurality of supporting columns are arranged in the cavity to support the diffusion plate; and the liquid crystal panel covers the diffusion plate and is used for presenting pictures. Good display brightness, visual effect and picture uniformity can be realized by adopting a small number of light bars.

Description

Technical Field

[0001] This application relates to the field of television technology, such as a backlight module for a television set and a television set. Background Technology

[0002] Currently, in the field of LCD technology, the backlight module is a key component for enabling television screens to emit light, and its performance directly affects the brightness, uniformity, and visual effect of the television display. With the increasing popularity of LCD TVs, how to effectively control costs while ensuring display quality has become a major research issue in this field.

[0003] In related technologies, to effectively control costs, some backlight modules employ a solution that reduces the number of LED strips. For example, for relatively small-sized LCD TVs such as 55-inch models, a backlight solution using a single LED strip is already available. This type of solution reduces the material cost of manufacturing the backlight module by decreasing the number of LED strips.

[0004] In the process of implementing this disclosure, at least the following technical problems were found in the related technology:

[0005] In related technologies, reducing the number of LED strips in small-sized LCD TVs, while lowering the material cost of backlight module manufacturing, results in uneven display brightness, severely impacting the user's visual experience. Furthermore, this uneven brightness problem is even more pronounced in large-sized LCD TVs if the number of LED strips is reduced. Therefore, for large-sized backlight modules, achieving good display brightness, visual effects, and image uniformity with a smaller number of LED strips has become a pressing technical challenge.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a backlight module for a television set and a television set. Good display brightness, visual effects, and image uniformity can be achieved using a relatively small number of LED strips.

[0009] In some embodiments, a backlight module for a television includes: a back panel with an arc-shaped structure on its top and bottom sides; two LED strips arranged parallel to the top and bottom sides on the back panel, with multiple LEDs on each strip arranged in a pattern of sparser edges and denser centers; a reflector attached to the back panel, exposing the LEDs on the LED strips; a diffuser covering the reflector, forming a cavity with the reflector, the reflector being the lower surface of the cavity and the diffuser being the upper surface of the cavity, with multiple support pillars disposed within the cavity to support the diffuser; and a liquid crystal panel covering the diffuser for displaying an image.

[0010] Optionally, the curved structure on the top and bottom sides of the back panel occupies 1 / 3 to 2 / 3 of the width of the back panel.

[0011] Optionally, multiple support columns are of the same height to ensure that the distance between the upper surface of the light strip and the lower surface of the diffuser plate is the OD value.

[0012] Optionally, multiple light-transmitting holes are provided on the left and right edges of the reflector to allow light inside the cavity to spill out between the reflector and the back plate.

[0013] Optionally, the backlight module also includes a brightness enhancement film covering the upper surface of the diffuser plate and located between the diffuser plate and the liquid crystal panel.

[0014] Optionally, the backlight module also includes a pad, disposed between the backplate and the reflector, for increasing the curvature of the reflector.

[0015] Optionally, the backlight module further includes: a spacer, the spacer being disposed on the pad, and a reflector being adhered to the spacer so that the spacer forms a smooth transition to the reflector.

[0016] Optionally, the gasket thickness is 0.3 mm to 0.5 mm.

[0017] Optionally, the backlight module also includes a thermally conductive adhesive layer disposed between the LED strip and the backplate to improve the heat dissipation efficiency of the LED strip.

[0018] In some embodiments, a television set includes a backlight module for a television set as described above.

[0019] The backlight module and television set for a television provided in this disclosure can achieve the following technical effects:

[0020] The backlight module for a television provided in this disclosure includes a backplate, LED strips, a reflector, a diffuser, and a liquid crystal panel. By setting the top and bottom edges of the backplate to an arc shape, light reflection and diffusion within the module are facilitated, allowing for more uniform light coverage of the entire display area and compensating for uneven light distribution caused by a reduction in the number of LED strips. By arranging two LED strips parallel to the top and bottom edges of the backplate, and distributing multiple LEDs on each strip according to a pattern of sparser edges and denser centers, the propagation and attenuation characteristics of light in space are considered, avoiding excessively strong light at the edges and excessively high brightness in the center of the strip, resulting in more balanced brightness across the entire display area. By setting multiple support pillars within the cavity formed by the reflector and diffuser, the problem of uneven refraction and reflection of light passing through the diffuser due to its unevenness, which affects image uniformity, is reduced. Therefore, this disclosure achieves good display brightness, visual effects, and image uniformity using a relatively small number of LED strips.

[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0022] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0023] Figure 1 This is an exploded view of a backlight module for a television set provided in an embodiment of this disclosure;

[0024] Figure 2 This is a schematic diagram of a backplate with two light strips provided in an embodiment of this disclosure;

[0025] Figure 3 This is a schematic diagram of a backplate side provided in an embodiment of this disclosure;

[0026] Figure 4 This is an exploded view of another backlight module for a television set provided in this embodiment of the disclosure;

[0027] Figure 5 This is a partial schematic diagram of an arcuate structure portion provided in an embodiment of this disclosure;

[0028] Figure 6 This is a partial schematic diagram of another arcuate structural portion provided in an embodiment of this disclosure;

[0029] Figure 7 This is a schematic diagram showing the distribution of nine photometer points on a liquid crystal screen according to an embodiment of this disclosure.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Backlight modules for televisions;

[0032] 110. Backplate; 111. Curved structure; 120. LED strip; 121. LED chip; 130. Reflector; 140. Diffuser; 150. Front panel; 160. Brightness enhancement film; 170. Spacer; 180. Gasket. Detailed Implementation

[0033] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0034] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0035] Unless otherwise stated, the term "multiple" means two or more.

[0036] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0037] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0038] The term "correspondence" can refer to an association or binding relationship. The correspondence between A and B means that there is an association or binding relationship between A and B.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0040] Combination Figures 1 to 3As shown, the backlight module 100 for a television provided in this embodiment includes: a backplate 110, LED strips 120, a reflector 130, a diffuser plate 140, and a liquid crystal panel 150. The top and bottom edges of the backplate 110 have an arc-shaped structure. Two LED strips 120 are arranged parallel to the top and bottom edges of the backplate 110, with multiple LEDs 121 on each strip arranged in a pattern of sparser edges and denser centers. The reflector 130 is attached to the backplate 110 and exposes the LEDs 121 on the LED strips 120. The diffuser plate 140 covers the reflector 130, forming a cavity with the reflector 130. The reflector 130 is the lower surface of the cavity, and the diffuser plate 140 is the upper surface of the cavity. Multiple support pillars are provided within the cavity to support the diffuser plate 140. The liquid crystal panel 150 covers the diffuser plate 140 and is used to display the image.

[0041] Specifically, when the back panel 110 is placed vertically, the upper side of the four sides of the back panel 110 is the top side, and the lower side is the bottom side. The fact that the top and bottom sides of the back panel 110 are arc-shaped means that the sides connecting the top and bottom sides of the back panel 110 are arc-shaped.

[0042] Specifically, by setting the top and bottom sides of the back panel 110 to an arc shape, light can be effectively guided and diffused, resulting in a more uniform light distribution within the module. When the light emitted from the LED strips 120 shines on the reflective sheet 130 attached to the arc-shaped back panel 110, the light is reflected and scattered at a specific angle, thus compensating for the uneven light distribution that might result from a reduction in the number of LED strips 120. Simultaneously, the arc shape increases the number of light reflections within the module, improving light utilization and consequently enhancing display brightness.

[0043] Optionally, during the fabrication of the back panel 110, stamping, bending, and other processes are used to form the required arc-shaped structure on the top and bottom sides of the back panel 110.

[0044] Specifically, by arranging two LED strips 120 parallel to the top and bottom edges on the back panel 110, and arranging multiple LED beads 121 on each strip 120 according to a pattern of sparser edges and denser centers, the propagation and attenuation characteristics of light in space can be utilized. In the edge areas, due to the relatively large distance from the light source, light will overlap after reflection and diffusion. Reducing the number of LED beads 121 at the edges can avoid excessive light intensity caused by light overlap in these areas. In the central area, excessive brightness is prone to occur. Increasing the density of LED beads 121 in the central area can make the light distribution more uniform, ensuring the brightness balance of the entire display area.

[0045] Specifically, by attaching the reflective sheet 130 to the back plate 110, the reflective sheet 130 can form the same arc-shaped structure as the back plate 110. By exposing the LED beads 121 on the LED strip 120 to the reflective sheet 130, and covering the reflective sheet 130 with a diffuser plate 140 to form a cavity, the reflective sheet 130 forms the lower surface of the cavity, and the diffuser plate 140 forms the upper surface. After the LED strip 120 emits light, a portion of it directly illuminates the reflective sheet 130. The reflective sheet 130 reflects this light towards the diffuser plate 140, increasing the total amount of light illuminating the diffuser plate 140 and improving display brightness. Simultaneously, the reflective sheet 130 also diffuses the light to a certain extent, making the light distribution more uniform.

[0046] Optionally, the reflective sheet 130 is made of a high-reflectivity material, such as a silver reflective film or a white reflective film. When attaching the reflective sheet 130 to the back plate 110, it is necessary to ensure that the reflective sheet 130 and the back plate 110 are tightly fitted to avoid air bubbles or wrinkles.

[0047] Optionally, the diffuser plate 140 is made of materials such as polymethyl methacrylate (PMMA) or polycarbonate (PC), which have certain optical diffusion properties. When installing the diffuser plate 140, it is necessary to ensure good contact between it and the support column, and to ensure the airtightness of the cavity.

[0048] Specifically, by setting multiple support columns inside the cavity to support the diffuser plate 140, the flatness of the diffuser plate 140 can be guaranteed, avoiding uneven refraction and reflection of light when passing through an uneven diffuser plate 140, which would affect the uniformity of the image.

[0049] The backlight module 100 for a television provided in this embodiment includes a backplate 110, LED strips 120, a reflector 130, a diffuser 140, and a liquid crystal panel 150. By setting the top and bottom edges of the backplate 110 to an arc shape, it helps to reflect and diffuse light within the module, allowing the light to cover the entire display area more evenly and compensating for the uneven light distribution caused by the reduced number of LED strips 120. By arranging two LED strips 120 parallel to the top and bottom edges on the backplate 110, and arranging multiple LEDs 121 on each LED strip 120 according to a pattern of sparser edges and denser centers, the propagation and attenuation characteristics of light in space are taken into account, avoiding the problem of excessively strong light in the edge area and excessively high brightness in the middle area of ​​the LED strip 120, thus making the brightness of the entire display area more balanced. By setting multiple support pillars in the cavity formed by the reflector 130 and the diffuser 140, the problem of uneven refraction and reflection of light when passing through the diffuser 140, which affects the uniformity of the image, is reduced. Therefore, in this embodiment of the disclosure, a relatively small number of light strips 120 can be used to achieve good display brightness, visual effect and screen uniformity.

[0050] In some embodiments, the arcuate structure on the top and bottom sides of the back panel 110 occupies 1 / 3 to 2 / 3 of the width of the back panel 110.

[0051] Specifically, if the arc-shaped structure occupies too small a proportion of the width of the back panel 110, the range of light guidance and diffusion provided by the back panel 110 will be limited. Light may not be sufficiently reflected and scattered within the module, resulting in light remaining mainly concentrated near the LED strip 120 and failing to distribute evenly across the entire display area, thus affecting display brightness and image uniformity. If the arc-shaped structure occupies too large a proportion of the width of the back panel 110, it may cause excessive deformation of the back panel 110 during manufacturing and use, affecting the structural stability of the back panel 110.

[0052] Therefore, in this embodiment, the proportion of the arc-shaped structure is limited to 1 / 3 to 2 / 3. This improves the reflection and diffusion of light while ensuring the structural stability of the back panel 110, thus enhancing the uniformity of light distribution in the display area.

[0053] In some embodiments, the multiple support columns are of the same height to ensure that the distance between the upper surface of the light strip 120 and the lower surface of the diffuser plate 140 is the OD value.

[0054] Specifically, the OD value is a key parameter in the optical design of the backlight module 100. It determines the spatial distance that light rays must travel after emitting from the lamp strip 120 before reaching the diffuser plate 140. This distance directly affects the light diffusion angle and mixing effect. If the support pillars are not of uniform height, the OD value may vary at different locations, resulting in different light diffusion angles in different areas. Excessive light diffusion angles in some areas may lead to overly dispersed light, reducing display brightness; while excessively small light diffusion angles in other areas may cause the light to be too concentrated, resulting in localized overbrightness and affecting the overall brightness uniformity of the image.

[0055] Therefore, in this embodiment, the multiple support columns are set to the same height. This ensures that the OD value remains consistent, making the mixing process of light within the cavity more uniform and thorough. The light emitted by different LED beads 121 can be better integrated, avoiding problems such as color spots and uneven brightness caused by uneven mixing, and improving the color uniformity of the image.

[0056] In some embodiments, the left and right edges of the reflective sheet 130 are provided with a plurality of light-transmitting holes so that light inside the cavity can overflow between the reflective sheet 130 and the back plate 110.

[0057] Specifically, near the edges of the LED strip 120 on the top and bottom sides of the backplate 110, the light emitted by the LED strip 120 receives more direct light during propagation, resulting in excessive brightness in these areas and the formation of bright edges. By providing multiple light-transmitting holes on the left and right edges of the reflector 130, an escape channel is provided for the light inside the cavity. This allows some of the light that would otherwise be directly reflected to the diffuser plate 140 to escape through the light-transmitting holes into the gap between the reflector 130 and the backplate 110, reducing the amount of light directly illuminating the edge area of ​​the diffuser plate 140 and lowering the risk of bright edges appearing on the top and bottom edges of the backplate 110.

[0058] like Figure 4 As shown, in some embodiments, the backlight module 100 further includes a brightness enhancement film 160. The brightness enhancement film 160 covers the upper surface of the diffuser plate 140 and is located between the diffuser plate 140 and the liquid crystal panel 150.

[0059] Specifically, by providing a brightness enhancement film 160 covering the upper surface of the diffuser plate 140, the distribution and angle of light can be further optimized, the utilization rate of light can be improved, and the picture can be brighter and clearer.

[0060] Optionally, the brightness enhancement film 160 may be a prism film or a brightness enhancement film, etc. When installing the brightness enhancement film 160, it is necessary to ensure that it is tightly attached to the diffuser plate 140 and the liquid crystal panel 150.

[0061] In this embodiment, the overall brightness of the light module is improved by setting the brightness enhancement film 160.

[0062] like Figure 5 As shown, in some embodiments, the backlight module 100 further includes a pad 170. The pad 170 is disposed between the back plate 110 and the reflective sheet 130 to increase the curvature of the reflective sheet 130.

[0063] Specifically, the main function of the reflector 130 is to reflect the light emitted by the LED strip 120 towards the diffuser plate 140, thereby improving light utilization and display brightness. By adding a pad 170 to increase the curvature of the reflector 130, it can better adapt to the curved structure of the back panel 110. When light shines on the reflector 130 with a larger curvature, the light can be reflected at a more ideal angle and direction, thereby enhancing the reflector 130's ability to collect and reflect light, guiding more light to the diffuser plate 140 and improving display brightness. This solves the problem of darker areas and uneven image quality on the top and bottom sides of the back panel 110 that are far from the LED strip 120.

[0064] Optionally, the pad 170 may be made of materials such as rubber or plastic, and must have a certain degree of elasticity and hardness. When installing the pad 170, a pad 170 of appropriate size and shape should be selected according to the required curvature of the reflector 130, and it should be pasted on the appropriate position of the back plate 110.

[0065] like Figure 6 As shown, in some embodiments, the backlight module 100 further includes a spacer 180. The spacer 180 is disposed on the pad 170, and the reflective sheet 130 is adhered to the spacer 180 so that the spacer 180 forms a smooth transition to the reflective sheet 130.

[0066] Understandably, if the reflector 130 is directly attached to the pad 170, the reflector 130 may exhibit abrupt changes in curvature at the edge of the pad 170. This abrupt change will cause discontinuous changes in the angle and direction of light reflection, resulting in uneven light reflection and affecting the brightness uniformity of the image.

[0067] Therefore, in this embodiment of the present disclosure, a shim 180 is provided on the shim 170. This fills the gap between the shim 170 and the reflector 130, so that the reflector 130 can also form a smooth transition arc at the edge of the shim 170, ensuring that light can be reflected uniformly and continuously, thereby improving optical performance.

[0068] Furthermore, the reflector 130 is typically thin and directly adhered to the pad 170. When subjected to external forces or temperature changes, it is prone to deformation in stress-concentrated areas such as the edges of the pad 170. The pad 180 possesses good elasticity and flexibility, which can disperse the stress on the reflector 130 and provide some support. This maintains the flatness and curvature stability of the reflector 130, extending its service life.

[0069] In some embodiments, the thickness of the gasket 180 is 0.3 mm to 0.5 mm.

[0070] Specifically, the function of the shim 180 is to create a smooth transition between the reflector 130 and the pad 170, optimizing the curvature of the reflector 130 and ensuring uniform light reflection. If the shim 180 is too thin, it may not be able to effectively fill the gap between the pad 170 and the reflector 130, failing to achieve a smooth curvature transition. If the shim 180 is too thick, it may cause the curvature of the reflector 130 to be too large, exceeding design expectations, affecting the reflection angle and direction of light, and causing abnormal light distribution.

[0071] Therefore, in this embodiment, the thickness of the gasket 180 is limited to the range of 0.3 mm to 0.5 mm. This allows for precise control of the curvature of the reflective sheet 130, ensuring uniform light reflection as designed and improving the brightness uniformity of the image.

[0072] In some embodiments, the backlight module 100 further includes a thermally conductive adhesive layer. The thermally conductive adhesive layer is disposed between the LED strip 120 and the backplate 110 to improve the heat dissipation efficiency of the LED strip 120.

[0073] Understandably, the LED strip 120 generates a significant amount of heat during operation. If this heat cannot be dissipated in time, it will cause the LED strip 120's temperature to rise, affecting its luminous efficiency and lifespan. The thermally conductive adhesive layer has excellent thermal conductivity, enabling it to quickly conduct the heat generated by the LED strip 120 to the backplate 110. The backplate 110 is typically made of a metal material, such as aluminum or aluminum alloy, and has excellent heat dissipation properties, further dissipating heat into the surrounding environment. This effectively reduces the operating temperature of the LED strip 120 and improves heat dissipation efficiency.

[0074] In some embodiments, nine points are selected on the liquid crystal screen that selects the backlight module proposed in the above embodiments, such as... Figure 7 The brightness of the nine points P0 to P8 is shown in Table 1 below:

[0075] Table 1

[0076] Location P0 P1 P2 Brightness / nits 262 264 256 Location P3 P4 P5 Brightness / nits 240 259 209 Location P6 P7 P8 Brightness / nits 203 212 213

[0077] As shown in Table 1, the backlight module provided in the above embodiments, using an optical scheme with two LED strips, achieves the same brightness at the center as multiple LED strips currently available, with a uniformity of up to 77.48%. The overall image is relatively uniform with minimal differences in brightness. This demonstrates that the backlight module provided in this embodiment achieves good display brightness, visual effects, and image uniformity using a relatively small number of LED strips.

[0078] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0079] In some embodiments, the television set includes a backlight module for the television set as described above.

[0080] Specifically, the television set provided in this disclosure includes the backlight module as described in the above embodiments, and therefore has the same technical effect, which will not be repeated here.

[0081] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A backlight module for a television set, characterized in that, include: The back panel has an arc-shaped structure on both the top and bottom sides. Two light strips are set parallel to the top and bottom sides on the back panel, and multiple LEDs on each light strip are arranged on the light strip in a pattern of sparse at the edges and dense in the middle; The reflector is attached to the back panel and exposes the LED beads on the LED strip; A diffuser plate covers the reflective sheet, forming a cavity with the reflective sheet. The reflective sheet is the lower surface of the cavity, and the diffuser plate is the upper surface of the cavity. Multiple support columns are installed inside the cavity to support the diffuser plate. The LCD panel, covering the diffuser plate, is used to display images.

2. The backlight module according to claim 1, characterized in that, The curved structure on the top and bottom sides of the back panel occupies 1 / 3 to 2 / 3 of the width of the back panel.

3. The backlight module according to claim 1, characterized in that, Multiple support columns are at the same height to ensure that the distance between the upper surface of the light strip and the lower surface of the diffuser plate is the OD value.

4. The backlight module according to claim 1, characterized in that, Multiple light-transmitting holes are provided on the left and right edges of the reflector to allow light inside the cavity to spill out between the reflector and the back plate.

5. The backlight module according to any one of claims 1 to 4, characterized in that, Also includes: A brightness enhancement film is applied to the upper surface of the diffuser plate, located between the diffuser plate and the LCD panel.

6. The backlight module according to any one of claims 1 to 4, characterized in that, Also includes: A pad is placed between the back plate and the reflector to increase the curvature of the reflector.

7. The backlight module according to claim 6, characterized in that, Also includes: A gasket is placed on the pad, and the reflector is attached to the gasket so that the gasket forms a smooth transition to the reflector.

8. The backlight module according to claim 6, characterized in that, The gasket thickness is 0.3mm to 0.5mm.

9. The backlight module according to any one of claims 1 to 4, characterized in that, Also includes: A thermally conductive adhesive layer is placed between the LED strip and the backplate to improve the heat dissipation efficiency of the LED strip.

10. A television set, characterized in that, include: The backlight module for a television set as described in any one of claims 1 to 9.

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