Limiting structure of backlight module

Abstract

The utility model relates to a limiting structure of a backlight module. The limiting structure of the backlight module comprises a die casting, a clamping assembly and an FPC board, the clamping assembly comprises an abutting block, the abutting block is arranged on the die casting, a limiting groove is formed by the abutting block and the bottom of the die casting, and the FPC board is arranged in the limiting groove. According to the scheme provided by the invention, the FPC board can be limited and is prevented from exceeding the lamp trough.

Description

Technical Field

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

[0002] At present, the application of die-casting parts in backlight products is becoming more and more frequent. Die-casting is a die-casting process in which molten metal is hydraulically injected into a mold under high pressure and then cooled and formed. It replaces the lower iron frame in the original backlight products.

[0003] In the related art, the FPC board on the light bar is assembled to the lamp trough on the lower bottom surface of the die-casting. However, due to the soft texture of the FPC board, it is easy to deform, which can easily cause the FPC board to extend beyond the lamp trough during assembly, causing the LED light to extend beyond the surface of the light guide plate, resulting in a light spot. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a limiting structure for a backlight module, which can limit the FPC board and prevent it from exceeding the lamp trough.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] The first aspect of the present application provides a limiting structure of a backlight module, comprising: a die-casting; a snap-on assembly, the snap-on assembly comprising a supporting block, the supporting block being arranged on the die-casting, the supporting block and the bottom of the die-casting forming a limiting groove; an FPC board, the FPC board being arranged in the limiting groove.

[0007] The thickness of the supporting block is greater than the thickness of the FPC board.

[0008] It also includes an LED lamp, which is arranged on the FPC board.

[0009] The invention also includes a reflective plate, which is arranged on the bottom of the die casting.

[0010] It also includes a light guide plate, which is arranged on the reflective plate.

[0011] It also includes an iron frame, which is arranged on the die casting.

[0012] A deformation zone is provided between the light guide plate and the iron frame.

[0013] The abutting block has a rectangular cross-sectional structure.

[0014] Also included is a mounting post, which is disposed on the die casting.

[0015] The light guide plate has a rectangular cross-sectional structure.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] By setting a supporting block, a limiting groove is formed with the bottom surface of the die-casting to limit the FPC board, so that the LED light will not exceed the surface of the light guide plate, avoiding the generation of light spots. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments.

[0019] Figure 1 Schematic diagram of the structure of the backlight module in one embodiment of the present invention. DETAILED DESCRIPTION

[0020] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0021] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," and the like should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0023] Currently, die-casting is increasingly being used in backlight products. Die-casting involves injecting molten metal into a mold under high pressure, followed by cooling and forming. It replaces the lower metal frame in existing backlight products. In related technology, the flexible printed circuit board (FPC) for the light bar is assembled into the light trough on the bottom surface of the die-casting. However, due to its soft texture and easy deformation, the FPC can easily extend beyond the light trough during assembly, causing the LED light to protrude from the light guide plate surface, resulting in a flare.

[0024] In order to solve the above problems, an embodiment of the present application provides a limiting structure of a backlight module, which can limit the FPC board and prevent it from exceeding the lamp trough.

[0025] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0026] See Figure 1 A limiting structure of a backlight module includes: a die-casting 100, a clamping assembly 200 and an FPC board 300. The clamping assembly 200 includes a supporting block 210, which is arranged on the die-casting 100. The supporting block 210 and the bottom of the die-casting 100 form a limiting groove 400, and the FPC board 300 is arranged in the limiting groove 400.

[0027] Preferably, the abutting block 210 has a rectangular cross-sectional structure.

[0028] It should be noted that die casting involves injecting molten metal into a mold under high pressure, followed by cooling and forming. Die castings are typically made of aluminum. Furthermore, a retaining block 210 is provided, forming a retaining groove 400 with the bottom surface of the die casting 100 to position the FPC board 300, thereby preventing the LED light 500 from extending beyond the surface of the light guide plate 700 and thus preventing light spots.

[0029] See Figure 1 In one embodiment, the thickness of the supporting block 210 is greater than the thickness of the FPC board 300 .

[0030] It should be noted that, in order to ensure that the FPC board 300 can be completely restrained, the thickness of the supporting block 210 is greater than the thickness of the FPC board 300 .

[0031] See Figure 1 In one embodiment, a limiting structure of a backlight module further includes an LED lamp 500 , and the LED lamp 500 is disposed on the FPC board 300 .

[0032] It can be understood that the LED lamp 500 is mounted on the FPC board 300 and serves as a backlight source.

[0033] See Figure 1In one embodiment, a backlight module retaining structure further includes a reflective plate 600 disposed at the bottom of the die-casting 100. Specifically, the backlight module retaining structure further includes a light guide plate 700 disposed on the reflective plate 600. Specifically, the backlight module retaining structure further includes an iron frame 800 disposed on the die-casting 100. Specifically, the light guide plate 700 has a rectangular cross-sectional structure.

[0034] It should be noted that the reflective plate 600 reflects the leaked light back to the light guide plate 700 , and the light guide plate 700 plays a role in converting a point light source into a surface light source, making the light more uniform.

[0035] See Figure 1 In one embodiment, a deformation zone 810 is provided between the light guide plate 700 and the iron frame 800 .

[0036] It should be noted that the light guide plate 700 will expand when heated and contract when cooled during operation. Therefore, the deformation zone 810 can provide a space for the light guide plate 700 to heat up and expand.

[0037] See Figure 1 In one embodiment, a limiting structure of a backlight module further includes a mounting post 900 , and the mounting post 900 is disposed on the die-casting 100 .

[0038] It should be noted that the mounting column 900 is used to cooperate with the installation of the entire machine.

[0039] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the description are not necessarily required for this application. In addition, it is understood that the steps in the method of the embodiment of the present application can be adjusted in sequence, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0040] The embodiments of the present application have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A limiting structure of a backlight module, characterized in that: include: Die castings; A clamping assembly, the clamping assembly comprising a holding block, the holding block being disposed on the die casting, the holding block and the bottom of the die casting forming a limiting groove; An FPC board is arranged in the limiting groove.

2. The backlight module limiting structure according to claim 1, wherein: The thickness of the supporting block is greater than the thickness of the FPC board.

3. The limiting structure of the backlight module according to claim 1, wherein: It also includes an LED lamp, which is arranged on the FPC board.

4. The limiting structure of the backlight module according to claim 1, wherein: The invention also includes a reflective plate, which is arranged on the bottom of the die casting.

5. The limiting structure of the backlight module according to claim 4, characterized in that: It also includes a light guide plate, which is arranged on the reflective plate.

6. The limiting structure of the backlight module according to claim 5, characterized in that: It also includes an iron frame, which is arranged on the die casting.

7. The limiting structure of the backlight module according to claim 6, wherein: A deformation zone is provided between the light guide plate and the iron frame.

8. The limiting structure of the backlight module according to claim 1, wherein: The abutting block has a rectangular cross-sectional structure.

9. The backlight module limiting structure according to claim 1, wherein: Also included is a mounting post, which is disposed on the die casting.

10. The limiting structure of the backlight module according to claim 6, wherein: The light guide plate has a rectangular cross-sectional structure.

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