Backlight module and display equipment

Abstract

The utility model discloses a backlight module and discloses a display device with the backlight module, the backlight module comprises a base, the base is of a cavity structure with an opening at one end, a plurality of lamp strips are arranged along the length direction of the base, the lamp strips are arranged along the width direction of the base at intervals, and a plurality of light-emitting lamp beads are integrated on the lamp strips. The base is further provided with a first mounting part and a second mounting part, and a mounting groove is further formed in a frame of the base; the reflector plate is matched with the base in shape and size, the reflector plate is clamped between the base and the lamp strip, a first opening and a second opening are formed in the reflector plate, the first mounting part is sleeved with the first opening, and the second mounting part is sleeved with the second opening; the optical film is clamped in the mounting groove and covers the opening of the base, so that a relatively closed space is formed in the base; and the supporting structure comprises a first ejector rod and a second ejector rod, and the supporting structure provides support for the optical film. The display effect of the backlight module can be improved, and the backlight module is lighter and thinner.

Description

Technical Field

[0001] The utility model relates to the technical field of displays, and in particular to a backlight module and a display device. Background Art

[0002] Display technology has been widely used and continuously developed in the fields of consumer electronics, industrial control, and automotive instruments. Among them, the backlight module, as the core component of non-self-luminous display devices such as liquid crystal displays (LCDs), plays a vital role in improving display quality and visual experience. The backlight module is the light source of the liquid crystal display, and can be divided into two types: side-lit and direct-lit according to its light source structure. With the increasing popularity of LCD TVs, in response to the trend of large-scale panels, direct-lit backlight modules have become the focus of development at this stage. The direct-lit backlight module lamp tube is installed under the module, so that the light is directly irradiated upward. As the size of the liquid crystal display increases, the optical film also needs to be more adaptable, but when using a large-sized optical film, the optical film is easy to deform. Most of the existing solutions are to increase the thickness of the diffusion plate or increase the number of optical films. This design cost is high and the display effect is not good enough. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a backlight module, which can improve the display effect of the backlight module and make the backlight module thinner and lighter.

[0004] The utility model also provides a display device having the above-mentioned backlight module.

[0005] According to a first aspect of the present invention, a backlight module includes: a base, which is a cavity-type structure with one end open, a plurality of light strips are arranged along the length direction of the base, the light strips are arranged at intervals along the width direction of the base, and a plurality of light-emitting lamp beads are integrated in the light strips, the base is further provided with a first mounting portion and a second mounting portion, and a mounting groove is further provided on the frame of the base;

[0006] A reflective sheet, which is adapted to the shape and size of the base, is sandwiched between the base and the light strip, and is provided with a first opening and a second opening, wherein the first opening is sleeved on the first mounting portion, and the second opening is sleeved on the second mounting portion;

[0007] An optical film is clamped in the mounting groove, and the optical film covers the opening of the base so that the base forms a relatively closed space;

[0008] The support structure includes a first push rod and a second push rod, wherein one end of the first push rod is fixed to the first mounting portion, and the other end abuts against the optical film, and one end of the second push rod is fixed to the second mounting portion, and the other end abuts against the optical film, and the support structure is suitable for providing support for the optical film.

[0009] A backlight module according to an embodiment of the utility model has at least the following beneficial effects: the first mounting portion and the second mounting portion can form a stable locking structure to fix the first top rod and the second top rod, adapt to different working conditions, and improve the applicability of the backlight module; the first top rod and the second top rod can support the optical film and disperse the force on the optical film to prevent the optical film from deforming; using only the first top rod and the second top rod for support can reduce the shadow problem caused by the interference of the top rods and reduce the optical defects of the optical film; the first top rod and the second top rod can also play a role in strengthening the strength of the backlight module.

[0010] According to some embodiments of the utility model, the first mounting portion is a threaded hole, the second mounting portion is a buckle, the first push rod is connected to the base through the threaded hole, and the second push rod is connected to the base through the buckle. The connection through the threaded hole can achieve an accurate and stable connection, ensuring that the first push rod can be firmly installed on the first mounting portion, and the second push rod is connected through the buckle, which can achieve quick installation. The two fixing methods can greatly improve the flexibility of the product, and the best installation solution can be flexibly selected for different usage scenarios.

[0011] According to some embodiments of the utility model, the first top rod and the second top rod are respectively provided with a top rod portion, the top rod portion is a conical structure with a gradually decreasing rod diameter, and the rod diameter is the smallest where the top rod portion abuts against the optical film. This can minimize the influence of the first top rod and the second top rod on the light-transmitting area of ​​the optical film, ensure that the optical performance of the backlight module is not affected, and save materials.

[0012] According to some embodiments of the utility model, the projection of the top rod portion of the first top rod in the direction of the reflector sheet falls outside the outer contour of the first opening, which can avoid interference, facilitate the installation of the first top rod, ensure the physical performance of the first top rod, and optimize the spatial layout.

[0013] According to some embodiments of the utility model, a buffer head is provided at the abutment between the top rod and the optical film. The main function of the buffer head is to provide a soft contact surface when the top rod contacts the optical film, avoiding direct impact and scratches on the optical film caused by hard contact, thereby effectively protecting the optical film and extending its service life.

[0014] According to some embodiments of the utility model, the side wall of the top rod is provided with a reinforcing rib, which significantly improves the structural strength and rigidity of the top rod, so that the top rod has sufficient ability to resist bending and twisting when supporting the optical film.

[0015] According to some embodiments of the utility model, the first mounting portion and the second mounting portion are respectively arranged between the luminous lamp beads, so as to make full use of the space in the backlight module, and the first mounting portion and the second mounting portion are arranged in the non-luminous area, which helps to improve the brightness uniformity of the backlight module.

[0016] According to some embodiments of the utility model, there are two light strips, at least four light beads are arranged on the light strips, and the first mounting portion and the second mounting portion are respectively arranged at the intersection of the diagonal lines of the four light beads of the two adjacent light strips. This can balance the force, improve the overall stability of the backlight module, avoid blocking the light after the first top rod and the second top rod are installed, and ensure that the light can be evenly irradiated onto the optical film.

[0017] According to some embodiments of the present invention, the support structure is made of a light-transmitting material. The use of light-transmitting material helps to reduce optical loss and make the light distribution of the backlight module more uniform.

[0018] A display device according to an embodiment of the second aspect of the utility model includes a backlight module as described above.

[0019] The display device according to the embodiment of the utility model has at least the following beneficial effects: the display device using the above backlight module can improve the display effect of the display device, make the color transition of the picture more natural, reduce dark areas and hot spots, and can improve the brightness uniformity of the picture of the display device, with richer details.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 A schematic diagram of a backlight module of a dual light strip according to an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of a base of a double light strip according to an embodiment of the utility model;

[0024] Figure 3 A schematic diagram of a base of a three-light strip according to an embodiment of the utility model;

[0025] Figure 4 A cross-sectional view of a first push rod according to an embodiment of the utility model;

[0026] Figure 5 It is a cross-sectional view of the second push rod of the embodiment of the utility model.

[0027] Reference numerals: reflective sheet 100 ; first mounting portion 110 ; second mounting portion 120 ; base 130 ; light-emitting lamp beads 140 ; ​​light strip 150 ; top rod portion 160 ; first top rod 170 ; second top rod 180 . DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, 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.

[0030] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] Reference Figures 1 to 5 A backlight module includes: a base 130, which is a cavity structure with one end open, a plurality of light strips 150 are arranged along the length direction of the base 130, the light strips 150 are arranged at intervals along the width direction of the base 130, the light strips 150 are integrated with a plurality of light-emitting lamp beads 140, the base 130 is also provided with a first mounting portion 110 and a second mounting portion 120, and a mounting groove is also provided on the frame of the base 130;

[0033] The reflector 100 is adapted to the shape and size of the base 130. The reflector 100 is sandwiched between the base 130 and the light strip 150. The reflector 100 is provided with a first opening and a second opening. The first opening is sleeved on the first mounting portion 110, and the second opening is sleeved on the second mounting portion 120.

[0034] The optical film (not shown in the figure) is clamped in the mounting groove, and the optical film covers the opening of the base 130 so that the base 130 forms a relatively closed space;

[0035] The supporting structure includes a first top rod 170 and a second top rod 180. One end of the first top rod 170 is fixed to the first mounting portion 110, and the other end abuts against the optical film. One end of the second top rod 180 is fixed to the second mounting portion 120, and the other end abuts against the optical film. The supporting structure is suitable for providing support for the optical film.

[0036] The first mounting portion 110 and the second mounting portion 120 can form a stable locking structure to fix the first top rod 170 and the second top rod 180 to adapt to different working conditions and improve the applicability of the backlight module; the first top rod 170 and the second top rod 180 can support the optical film and disperse the force on the optical film to prevent the optical film from deforming; using only the first top rod 170 and the second top rod 180 for support can reduce the shadow problem caused by the interference of the top rods and reduce the optical defects of the optical film; the first top rod 170 and the second top rod 180 can also play a role in strengthening the strength of the backlight module.

[0037] It can be understood that the optical film includes a diffuser plate and a diffuser sheet, the diffuser plate is made of a hard material, the diffuser sheet is made of a soft material, the first top rod 170 and the second top rod 180 are used to support the diffuser plate, the diffuser plate serves as a mounting platform for the diffuser sheet, and the diffuser plate and the diffuser sheet are stacked together. When the backlight module is installed, the light bar, the reflective sheet 100, the top rod, the diffuser plate, the diffuser sheet, and the LCD screen are installed and fixed in sequence.

[0038] The first mounting portion 110 is a threaded hole, the second mounting portion 120 is a buckle, the first top rod 170 is connected to the base 130 through the threaded hole, and the second top rod 180 is connected to the base 130 through the buckle. The connection through the threaded hole can achieve an accurate and stable connection, ensuring that the first top rod 170 can be firmly installed on the first mounting portion 110, and the second top rod 180 is connected through the buckle, which can achieve quick installation. The two fixing methods can greatly improve the flexibility of the product, and the best installation solution can be flexibly selected for different usage scenarios.

[0039] Reference Figure 4 and Figure 5The first top rod 170 and the second top rod 180 are respectively provided with a top rod portion 160, and the top rod portion 160 is a conical structure with a gradually decreasing rod diameter, and the rod diameter is the smallest at the point where the top rod portion 160 abuts against the optical film. The influence of the first top rod 170 and the second top rod 180 on the light-transmitting area of ​​the optical film can be reduced as much as possible, ensuring that the optical performance of the backlight module is not affected, and also saving materials.

[0040] The projection of the top rod portion 160 of the first top rod 170 in the direction of the reflector sheet 100 falls outside the outer contour of the first opening, which can avoid interference, facilitate the installation of the first top rod 170, ensure the physical performance of the first top rod 170, and optimize the spatial layout.

[0041] A buffer head is provided at the contact point between the top rod 160 and the optical film. The main function of the buffer head is to provide a soft contact surface when the top rod 160 contacts the optical film, avoiding direct impact and scratches on the optical film caused by hard contact, thereby effectively protecting the optical film and extending its service life. It is understandable that the shape of the buffer head is adapted to the shape of the top rod 160.

[0042] The side wall of the top rod portion 160 is provided with reinforcing ribs, which significantly improve the structural strength and rigidity of the top rod portion 160, so that the top rod has sufficient ability to resist bending and twisting when supporting the optical film.

[0043] Reference Figure 1 and Figure 2 In the first embodiment, the first mounting portion 110 and the second mounting portion 120 are respectively arranged between the light-emitting lamp beads 140. The space in the backlight module can be fully utilized. The first mounting portion 110 and the second mounting portion 120 are installed in the non-light-emitting area, which helps to improve the brightness uniformity of the backlight module. There are two light strips 150, and at least four light-emitting lamp beads 140 are arranged on the light strips 150. The first mounting portion 110 and the second mounting portion 120 are respectively arranged at the diagonal intersection of the four light-emitting lamp beads 140 of the two adjacent light strips 150. It can balance the force, improve the overall stability of the backlight module, avoid the first top rod 170 and the second top rod 180 from blocking the light after installation, and ensure that the light can be evenly irradiated on the optical film. It can be understood that setting the first top rod 170 or the second top rod 180 at the diagonal intersection of the light-emitting lamp beads 140 can reduce the optical defects of the backlight module, thereby improving the display effect of the product.

[0044] In another embodiment, referring to Figure 3Three groups of light strips 150 are arranged in the backlight module, and the three groups of light strips 150 are arranged at intervals. The first mounting part 110 or the second mounting part 120 is also arranged between the diagonal intersection points of adjacent light-emitting lamp beads 140. It can be understood that the first mounting part 110 and the second mounting part 120 can be freely combined and used according to the assembly requirements and application scenarios of the actual product. Figure 3 In the specific application case shown, only four second mounting parts 120 are used as fixing points, but this configuration is not absolute. When the shape or overall structure of the base 130 of the backlight module changes, it can be adaptively adjusted to use only four first mounting parts 110. This solution does not strictly limit the specific application of the first mounting parts 110 and the second mounting parts 120, and can be adaptively modified according to the actual application of the product.

[0045] Reference Figure 4 and Figure 5 , the support structure is made of light-transmitting material. The use of light-transmitting material helps to reduce optical loss and make the light distribution of the backlight module more uniform. The support structure can be supported by transparent PC material or made of PMMA material.

[0046] The display device according to the second embodiment of the utility model includes a backlight module as described above. The display device using the above backlight module can improve the display effect of the display device, make the color transition of the picture more natural, reduce dark areas and hot spots, and improve the brightness uniformity of the picture of the display device, with richer details.

[0047] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A backlight module, characterized in that: include: The base is a cavity-type structure with one end open, a plurality of light strips are arranged along the length direction of the base, the light strips are arranged at intervals along the width direction of the base, and a plurality of light-emitting lamp beads are integrated in the light strips. The base is also provided with a first mounting portion and a second mounting portion, and a mounting groove is also provided on the frame of the base; A reflective sheet, which is adapted to the shape and size of the base, is sandwiched between the base and the light strip, and is provided with a first opening and a second opening, wherein the first opening is sleeved on the first mounting portion, and the second opening is sleeved on the second mounting portion; An optical film is clamped in the mounting groove, and the optical film covers the opening of the base so that the base forms a relatively closed space; The support structure includes a first push rod and a second push rod, wherein one end of the first push rod is fixed to the first mounting portion, and the other end abuts against the optical film, and one end of the second push rod is fixed to the second mounting portion, and the other end abuts against the optical film, and the support structure is suitable for providing support for the optical film.

2. The backlight module according to claim 1, characterized in that: The first mounting portion is a threaded hole, the second mounting portion is a buckle, the first push rod is connected to the base through the threaded hole, and the second push rod is connected to the base through the buckle.

3. The backlight module according to claim 1, characterized in that: The first push rod and the second push rod are respectively provided with a push rod portion, and the push rod portion is a conical structure with a rod diameter gradually decreasing, and the rod diameter is the smallest at the place where the push rod portion abuts against the optical film.

4. The backlight module according to claim 3, characterized in that: A projection of a top rod portion of the first top rod in a direction of the reflective sheet falls outside an outer contour line of the first opening.

5. The backlight module according to claim 3, characterized in that: A buffer head is arranged at the abutment position between the top rod part and the optical film.

6. The backlight module according to claim 3, characterized in that: The side wall of the top rod portion is provided with a reinforcing rib.

7. The backlight module according to claim 1, characterized in that: The first mounting portion and the second mounting portion are respectively arranged between the light emitting lamp beads.

8. The backlight module according to claim 7, characterized in that: There are two light strips, and at least four light emitting lamp beads are arranged on the light strips. The first mounting portion and the second mounting portion are respectively arranged at the intersection points of the diagonals of the four light emitting lamp beads of two adjacent light strips.

9. The backlight module according to claim 1, characterized in that: The supporting structure is made of light-transmitting material.

10. A display device, characterized in that: It comprises a backlight module as claimed in any one of claims 1 to 9.

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