Backlight module and display device

Abstract

The utility model provides a backlight module and a display device, wherein the backlight module comprises: an iron frame, a light guide plate, a plurality of LED lamps and a plurality of bosses; the light guide plate is arranged on the iron frame; the bosses and the LED lamps are arranged between the bottom edge of the iron frame and the light guide plate at intervals. By arranging the bosses and the LED lamps between the bottom edge of the iron frame and the light guide plate at intervals, the light guide plate can be limited so that it will not shake in the backlight iron frame, thereby preventing abnormal noise from being generated.

Description

Technical Field

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

[0002] In the field of vehicle-mounted backlights, there are strict requirements for anti-noise. This is because vehicle-mounted products are susceptible to a lot of vibration during use. If the product is prone to noise, it will not only affect the driving experience, but also directly affect the product life. In addition, due to the needs of the usage scenario, there are also extremely high requirements for the heat dissipation performance of the vehicle-mounted backlight to prevent the backlight from overheating and affecting the service life. In the existing vehicle-mounted backlight structure, common backlight overheating is caused by the LED lamp on the backlight not being closely attached to the iron frame, and the abnormal backlight noise is caused by the shaking of the backlight light guide plate. Therefore, the existing solution needs to be improved to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a backlight module and a display device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] In a first aspect, an embodiment of the utility model provides a backlight module, comprising: an iron frame, a light guide plate, a plurality of LED lamps and a plurality of bosses;

[0006] The light guide plate is arranged on the iron frame;

[0007] The boss and the LED lamp are arranged between the bottom edge of the iron frame and the light guide plate at intervals.

[0008] As a preferred implementation of the present invention, the backlight module further includes an FPC, and the FPC is connected to the plurality of LED lamps.

[0009] As a preferred implementation manner of the present invention, the plurality of LED lamps are attached to one side of the FPC, and the other side of the FPC is attached to the bottom edge of the iron frame and extends outside the iron frame.

[0010] As a preferred implementation manner of the utility model, the lower surface of the boss is fixedly arranged on one side of the FPC, and the upper surface of the boss is in contact with the lower edge of the light guide plate.

[0011] As a preferred implementation manner of the present invention, the upper surface of the boss is fixedly arranged on the lower edge of the light guide plate, and the lower surface of the boss is in contact with one side of the FPC.

[0012] As a preferred implementation manner of the present utility model, the height of the boss is 1-2 mm greater than the height of the LED.

[0013] As a preferred implementation of the present utility model, the boss is made of silicone material.

[0014] As a preferred implementation mode of the present utility model, the backlight module further comprises a reflective sheet, and the reflective sheet is arranged between the light guide sheet and the iron frame.

[0015] As a preferred implementation manner of the utility model, the backlight module further comprises a diaphragm, and the diaphragm covers a side of the light guide plate away from the iron frame.

[0016] In a second aspect, an embodiment of the present invention further provides a display device, comprising a display module and a backlight module as in any embodiment of the present invention.

[0017] Compared with the prior art, the advantages and positive effects of the utility model are:

[0018] In the utility model, by arranging the boss and the LED lamp between the bottom edge of the iron frame and the light guide plate at intervals, the light guide plate can be limited so that it will not shake in the backlight iron frame, thereby preventing abnormal noise from being generated. In addition, when an FPC is provided between the LED lamp and the iron frame, the boss is made of silicone material, which can prevent the FPC from being scratched by the bottom edge of the light guide plate, and can also support the FPC to prevent the FPC from being lifted up or falling off due to bubbles generated by the heat of the FPC back glue and the iron frame. Moreover, since the LED lamp is arranged on the FPC, when the FPC is supported and fully contacted with the iron frame, the LED lamp will also be in full contact with the iron frame, making its heat dissipation more sufficient, thereby improving the heat dissipation performance of the backlight module and preventing abnormal noise from the backlight. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the top view structure of a backlight module provided by the utility model;

[0020] Figure 2 The utility model is a schematic diagram of the side structure of a backlight module. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] First, see Figure 1 The embodiment of the utility model provides a backlight module, comprising: an iron frame 10, a light guide plate 20, a plurality of LED lamps 30 and a plurality of bosses 40;

[0026] The light guide plate 20 is disposed on the iron frame 10;

[0027] The boss 40 is disposed between the bottom edge of the iron frame 10 and the light guide plate 20 with a spacing therebetween from the LED lamp 30 .

[0028] In the utility model, by arranging the boss and the LED lamp between the bottom edge of the iron frame and the light guide plate at intervals, the light guide plate can be limited so that it will not shake in the backlight iron frame, thereby preventing abnormal noise from being generated.

[0029] As a preferred embodiment of the present invention, refer to Figure 2 The backlight module further includes an FPC 50, and the FPC 50 is connected to the plurality of LED lamps 30. The FPC 50 is used to be connected to a client, so as to supply power to the plurality of LED lamps 30 and control the switches of the plurality of LED lamps 30.

[0030] As a preferred embodiment of the present invention, the plurality of LED lamps 30 are attached to one side of the FPC 50, and the other side of the FPC 50 is attached to the bottom edge of the iron frame 10 and extends outside the iron frame 10. Through the above arrangement, the FPC and the iron frame are closely attached, thereby achieving heat dissipation of the FPC and the plurality of LED lamps attached to the FPC, and facilitating the connection of the FPC to the client, thereby powering the plurality of LED lamps and controlling the switches of the plurality of LED lamps.

[0031] When an FPC is provided between the LED lamp and the iron frame, the boss can be made of silicone material, which can prevent the FPC from being scratched by the bottom edge of the light guide plate, and can also support the FPC to prevent the FPC from being lifted up or falling off due to bubbles generated by the heat of the FPC back adhesive and the iron frame. Moreover, since the LED lamp is arranged on the FPC, when the FPC is supported and fully contacted with the iron frame, the LED lamp will also be in full contact with the iron frame, making the heat dissipation more sufficient, thereby improving the heat dissipation performance of the backlight module and preventing abnormal noise of the backlight.

[0032] As a preferred embodiment of the present invention, the lower surface of the boss 40 is fixedly arranged on one side of the FPC 50, and the upper surface of the boss 40 is in contact with the lower edge of the light guide plate 20. The above arrangement allows the boss 40 to be designed on the FPC 50 at the same time as the LED lamp, so that the height of the boss can be designed according to the height of the matching LED lamp, so as to achieve the best limiting effect without affecting the lighting effect of the LED lamp.

[0033] As a preferred embodiment of the utility model, the upper surface of the boss is fixedly arranged on the lower edge of the light guide plate, and the lower surface of the boss is in contact with one side of the FPC. Since the LED lamp and the FPC are more easily damaged during use, the above arrangement can facilitate the replacement of the LED lamp and the FPC without replacing the boss, thus saving costs.

[0034] As a preferred embodiment of the utility model, the height of the boss is 1-2 mm greater than the height of the LED. The above arrangement can achieve the best limiting effect of the boss, and at the same time does not affect the lighting effect of the LED lamp.

[0035] As a preferred embodiment of the utility model, the boss is made of silicone material. The boss is made of silicone material to prevent the FPC from being scratched.

[0036] As a preferred embodiment of the utility model, the backlight module further includes a reflective sheet 60, which is disposed between the light guide plate 20 and the iron frame 10. The reflective surface of the reflective sheet is disposed on a side close to the light guide plate, and the non-reflective surface of the reflective sheet is disposed on a side close to the iron frame.

[0037] As a preferred embodiment of the present invention, the backlight module further includes a film 70, which covers the side of the light guide plate 20 away from the iron frame 10. The film 70 includes but is not limited to a combined film structure of one or more of a diffusion film, a brightness enhancement film, and a sunscreen film.

[0038] In the second aspect, the embodiment of the utility model further provides a display device, including a display module and a backlight module as in any embodiment of the utility model. The display module and the backlight module are bonded together, and the utility model does not make a specific setting for the type of display module, and its beneficial effects refer to the beneficial effects in any embodiment of the utility model.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A backlight module, characterized in that: include: Iron frame, light guide plate, several LED lamps and several bosses; The light guide plate is arranged on the iron frame; The boss and the LED lamp are arranged between the bottom edge of the iron frame and the light guide plate at intervals.

2. The backlight module according to claim 1, characterized in that: It also includes an FPC, and the FPC is connected to the plurality of LED lamps.

3. The backlight module according to claim 2, characterized in that: The plurality of LED lamps are attached to one side of the FPC, and the other side of the FPC is attached to the bottom edge of the iron frame and extends outside the iron frame.

4. The backlight module according to claim 3, characterized in that: The lower surface of the boss is fixedly arranged on one side of the FPC, and the upper surface of the boss is in contact with the lower edge of the light guide plate.

5. The backlight module according to claim 3, characterized in that: The upper surface of the boss is fixedly arranged on the lower edge of the light guide plate, and the lower surface of the boss is in contact with one side of the FPC.

6. The backlight module according to claim 4 or 5, characterized in that: The height of the boss is 1-2 mm greater than the height of the LED.

7. The backlight module according to claim 1, characterized in that: The boss is made of silicone material.

8. The backlight module according to claim 1, characterized in that: It also includes a reflective sheet, which is arranged between the light guide plate and the iron frame.

9. The backlight module according to claim 1, characterized in that: It also includes a film, which covers the side of the light guide plate away from the iron frame.

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

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