Backlight module and display equipment

Abstract

The utility model provides a backlight module and display equipment, and the backlight module comprises a backlight frame and a PCB (Printed Circuit Board), a positioning buckle is arranged on the rear surface of the backlight frame; the PCB comprises a PCB main body and a grounding hole; and the positioning buckle passes through the grounding hole and is used for fixing the PCB on the backlight frame. According to the backlight frame, the positioning buckle on the backlight frame is ingeniously combined with the grounding hole in the PCB, so that the positioning buckle penetrates through the grounding hole, the PCB is fixed on the backlight frame, and the manufacturing steps and cost are saved.

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 existing vehicle backlight design, the PCB board of the backlight module is usually fixed on the backlight frame by double-sided adhesive. This not only requires marking on the backlight frame for positioning, but also increases the steps and cost of pasting the double-sided adhesive tape, and the PCB board is not easy to remove. 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: a backlight frame and a PCB board;

[0006] A positioning buckle is provided on the rear surface of the backlight frame;

[0007] The PCB board includes a PCB body and a grounding hole;

[0008] The positioning clip passes through the grounding hole and is used to fix the PCB board on the backlight frame.

[0009] As a preferred embodiment of the utility model, the positioning buckle includes an umbrella cap and a bottom column, the umbrella cap includes four contraction parts, and the bottom column is fixed to the rear surface of the backlight frame.

[0010] As a preferred implementation of the present invention, the backlight frame is a metal frame.

[0011] As a preferred embodiment of the present invention, a circle of conductive foam is provided at the connection between the bottom column and the backlight frame, and when the PCB board is fixed on the backlight frame, the grounding hole is connected to the conductive foam.

[0012] As a preferred embodiment of the present invention, the height of the bottom column is the sum of the height of the conductive foam and the thickness of the PCB body.

[0013] As a preferred implementation of the present utility model, the grounding hole includes a copper foil layer.

[0014] As a preferred implementation of the present invention, the positioning buckle is made of soft plastic material.

[0015] As a preferred implementation mode of the present invention, the number of the positioning buckles and the number of the grounding holes are both four.

[0016] As a preferred embodiment of the utility model, it also includes a backlight, which is arranged on the front surface of the backlight frame.

[0017] In a second aspect, the present invention further provides a display module, comprising a display screen and a backlight module as in any embodiment of the present invention.

[0018] Compared with the prior art, the advantages and positive effects of the utility model are:

[0019] 1. Through the ingenious combination of the positioning buckle on the backlight frame and the grounding hole in the PCB board, the positioning buckle passes through the grounding hole, so that the PCB board is fixed on the backlight frame, thereby saving production steps and costs;

[0020] 2. The structure of the positioning buckle in the utility model facilitates the installation and removal of the PCB board;

[0021] 3. The conductive foam in the utility model can realize the grounding of the PCB board and the backlight iron frame, and play a supporting role to prevent the PCB board from shaking and producing abnormal noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a backlight module provided by the utility model;

[0023] Figure 2 A schematic diagram of the structure of a PCB provided by the utility model;

[0024] Figure 3 A side view of a positioning buckle provided by the utility model;

[0025] Figure 4 A top view of an umbrella cap provided by the utility model;

[0026] Figure 5 This is a structural schematic diagram of a backlight module provided by the utility model. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] First, see Figure 1-2 , the embodiment of the utility model provides a backlight module, including: a backlight frame 100 and a PCB board 200;

[0032] A positioning buckle 300 is provided on the rear surface of the backlight frame 100;

[0033] The PCB board 200 includes a PCB body 210 and a grounding hole 220;

[0034] The positioning buckle 300 passes through the grounding hole 220 to fix the PCB board 200 on the backlight frame 100 .

[0035] The embodiment of the utility model cleverly combines the positioning buckle on the backlight frame with the grounding hole in the PCB board, so that the positioning buckle passes through the grounding hole, thereby fixing the PCB board on the backlight frame, thereby saving manufacturing steps and costs.

[0036] As a preferred embodiment of the present invention, refer to Figure 3-4 The positioning buckle 300 includes an umbrella cap 310 and a bottom column 320. The umbrella cap 310 includes four contraction parts 311. The bottom column 320 is fixed to the rear surface of the backlight frame. Figure 3As shown, the umbrella cap 310 is divided into four equal parts, thereby being divided into four contraction parts 311. The material of the umbrella cap can be a material that can shrink and deform, such as soft plastic, foam, etc. Therefore, the contraction part has compressibility and will shrink under the action of external force to facilitate passing through the grounding hole. When there is no external force, it will expand to fix the PCB board. The structure of the positioning buckle in the utility model is convenient for installing and removing the PCB board.

[0037] As a preferred implementation manner of the present utility model, the backlight frame is a metal frame.

[0038] As a preferred embodiment of the present invention, refer to Figure 3 A circle of conductive foam 330 is provided at the connection between the bottom column 320 and the backlight frame 100 . When the PCB board 200 is fixed on the backlight frame 100 , the grounding hole 220 is connected to the conductive foam 330 .

[0039] As a preferred implementation manner of the present utility model, the height of the bottom column is the sum of the height of the conductive foam and the thickness of the PCB body.

[0040] As a preferred embodiment of the present invention, refer to Figure 2 The grounding hole 220 includes a copper foil layer 221. When the PCB board is fixed on the backlight frame, the copper foil layer of the grounding hole will be connected and conducted with the conductive foam, so that the PCB board and the backlight iron frame can be grounded.

[0041] The conductive foam in the utility model can not only realize the grounding of the PCB board and the backlight iron frame, but also play a supporting role to prevent the PCB board from shaking and generating abnormal noise.

[0042] As a preferred implementation of the present invention, the positioning buckle is made of soft plastic material.

[0043] As a preferred embodiment of the present invention, the number of the positioning buckles and the number of the grounding holes are both four. In the present embodiment of the present invention, the grounding holes are preferably arranged at the four corners of the PCB board, and the positioning buckles are arranged correspondingly thereto, which can enhance the stability of the module.

[0044] As a preferred embodiment of the present invention, refer to Figure 5 , further comprising a backlight 400 , wherein the backlight 400 is disposed on the front surface of the backlight frame 100 .

[0045] In a second aspect, the present invention further provides a display module, comprising a display screen and a backlight module as in any embodiment of the present invention.

[0046] 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: Backlight frame and PCB board; A positioning buckle is provided on the rear surface of the backlight frame; The PCB board includes a PCB body and a grounding hole; The positioning buckle passes through the grounding hole and is used to fix the PCB board on the backlight frame.

2. The backlight module according to claim 1, characterized in that: The positioning buckle comprises an umbrella cap and a bottom column, the umbrella cap comprises four contraction parts, and the bottom column is fixed on the rear surface of the backlight frame.

3. The backlight module according to claim 2, characterized in that: The backlight frame is a metal frame.

4. The backlight module according to claim 3, characterized in that: A circle of conductive foam is provided at the connection between the bottom column and the backlight frame. When the PCB board is fixed on the backlight frame, the grounding hole is connected to the conductive foam.

5. The backlight module according to claim 4, characterized in that: The height of the bottom column is the sum of the height of the conductive foam and the thickness of the PCB body.

6. The backlight module according to claim 1, characterized in that: The grounding hole includes a copper foil layer.

7. The backlight module according to claim 1, characterized in that: The positioning buckle is made of soft plastic material.

8. The backlight module according to claim 1, characterized in that: The number of the positioning buckles and the number of the grounding holes are both four.

9. The backlight module according to claim 7, characterized in that: A backlight is also included, and the backlight is arranged on the front surface of the backlight frame.

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

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