Backlight module capable of preventing rubber frame from sinking inwards

Abstract

The utility model provides a backlight module capable of preventing a rubber frame from sinking inwards, which comprises an iron frame assembly and a light source assembly, the iron frame assembly comprises a base plate, iron frame strips are respectively arranged on the left side, the right side and the upper side of the base plate, and a lamp socket U-shaped folding part is arranged on the lower side of the base plate; the rubber frame assembly comprises an upper rubber frame part and a lower rubber frame part, the upper rubber frame part and the lower rubber frame part are both in a U shape, a gap is formed between the free end of the upper rubber frame part and the free end of the lower rubber frame part, the upper rubber frame part is located on the inner side of the iron frame strip, and the lower rubber frame part is located below the upper rubber frame part; the LED lamp further comprises a film assembly, the film assembly comprises an optical film and a light bar reflection adhesive tape, the optical film is located on the substrate, and the light bar reflection adhesive tape is located between the optical film and the lamp socket U-folding part. The backlight module is simple in structure, deformation of the rubber frame caused by thermal expansion and cold contraction can be effectively avoided, and therefore the yield and assemblability of product assembly are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight modules, and particularly relates to a backlight module for preventing the inner recess of a glue frame. Background Technique

[0002] With the continuous development of technology, the electronic product market has developed well, and more and more people pay attention to the display screen manufacturing industry. The backlight module is a light source located behind the liquid crystal display. The liquid crystal display screen itself does not emit light, and it displays graphics and text through the backlight source. The assembly of ordinary backlight sources requires a high degree of precision. With the iterative upgrade of consumer electronic products, the frame of ordinary backlight sources is getting narrower and the display screen is getting larger, which will lead to an increase in the assembly difficulty of liquid crystal glass and backlight sources and an increase in the defective rate. Content of the Utility Model

[0003] Aiming at the deficiencies in the prior art, the utility model provides a backlight module for preventing the inner recess of a glue frame. The structure of the backlight module is simple, which can effectively avoid the deformation of the glue frame caused by thermal expansion and contraction, so as to improve the yield rate and assembly performance of products.

[0004] To achieve the above object, the utility model adopts the following technical scheme: A backlight module for preventing the inner recess of a glue frame, comprising:

[0005] An iron frame component, the iron frame component includes a substrate, and iron frame strips are respectively provided on the left side, the right side and the upper side of the substrate, and a lamp socket U-shaped folded portion is provided on the lower side of the substrate;

[0006] A glue frame component, the glue frame component includes an upper glue frame portion and a lower glue frame portion. Both the upper glue frame portion and the lower glue frame portion are in a "C" shape. There is a gap between the free ends of the upper glue frame portion and the lower glue frame portion. The upper glue frame portion is inside the iron frame strip, and the lower glue frame portion is below the upper glue frame portion;

[0007] It further includes a film component, the film component includes an optical film and a lamp strip reflective tape. The optical film is located on the substrate, and the lamp strip reflective tape is between the optical film and the lamp socket U-shaped folded portion.

[0008] Further, the gap between the free ends of the upper glue frame portion and the lower glue frame portion is 0.2 - 0.4 mm.

[0009] Further, there are gaps below the iron frame strips on the left side and the right side of the substrate. The two free ends of the lower glue frame portion have positioning protrusions matching the gaps, and the two positioning protrusions are connected by a limiting long strip.

[0010] Further, the top of the iron frame strip is arc-shaped. The iron frame strip includes a first frame plate and a second frame plate, and the first frame plate and the second frame plate are formed by bending sheet metal.

[0011] Furthermore, a limiting plate extends from the side surface of the positioning protrusion.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The backlight module has a simple structure and can effectively avoid deformation of the plastic frame due to thermal expansion and contraction, thereby improving the yield rate and assemblability of product assembly;

[0014] 2. Since there are notches under the iron frame bars on the left and right sides of the base plate, when connecting the lower plastic frame, it can be supported and connected to the base plate through the positioning protrusions, so that it will not deviate during assembly;

[0015] 3. Since the top of the iron frame bar is arc-shaped and formed by bending sheet metal, it is thicker and stronger, and is not prone to bending and deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 It is a top view of the utility model;

[0018] Figure 3 For the utility model Figure 1 Enlarged view of part A;

[0019] Figure 4 For the utility model Figure 2 Enlarged view of part B;

[0020] Figure 5 This is an enlarged view of the positions of the upper and lower rubber frames of the present invention;

[0021] Figure 6 For the utility model Figure 2 The structure diagram after removing the light-shielding tape between the optical film and the U-fold part of the lamp holder;

[0022] Figure: 1, base plate; 2, iron frame; 3, lamp holder U-bend; 4, gap; 5, upper plastic frame; 6, lower plastic frame; 7, light bar reflective tape; 8, notch; 9, positioning protrusion; 10, first frame plate; 11, second frame plate; 12, limit plate; 13, optical film; DETAILED DESCRIPTION

[0023] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 6 A backlight module for preventing a plastic frame from sinking in is shown, comprising:

[0025] An iron frame component, the iron frame component includes a substrate 1, iron frame bars 2 are respectively provided on the left side, right side and upper side of the substrate 1, and a lamp socket U-shaped folding part 3 is provided on the lower side of the substrate 1;

[0026] A rubber frame component, the rubber frame component includes an upper rubber frame part 5 and a lower rubber frame part 6, both the upper rubber frame part 5 and the lower rubber frame part 6 are in a "C" shape, and there is a gap 4 between the free ends of the upper rubber frame part 5 and the lower rubber frame part 6. The upper rubber frame part 5 is inside the iron frame bar 2, and the lower rubber frame part 6 is below the upper rubber frame part 5;

[0027] It further includes a film component, the film component includes an optical film 13 and a lamp bar reflective tape 7. The optical film 13 is located on the substrate 1, and the lamp bar reflective tape 7 is between the optical film 13 and the lamp socket U-shaped folding part 3.

[0028] The process of using the present utility model is as follows. The upper rubber frame part 5 and the lower rubber frame part 6 of the rubber frame component are respectively formed by a mold. After forming, they are assembled onto the iron frame component. Specifically, during assembly, the upper rubber frame part 5 is connected to the inside of the iron frame bars 2 respectively provided on the left side, right side and upper side of the substrate 1, and the lower rubber frame part 6 is connected below the lamp socket U-shaped folding part 3. Finally, the film component is assembled. Specifically, first, the optical film 13 is installed on the substrate 1, and finally, the lamp bar reflective tape 7 is pasted between the optical film 13 and the lamp socket U-shaped folding part 3. In the present utility model, the rubber frame is split into two sections, namely the upper rubber frame part 5 and the lower rubber frame part 6. When thermal expansion occurs, the volumes of the upper rubber frame part 5 and the lower rubber frame part 6 increase, and finally, the gap can just be filled. When cold shrinkage occurs, the overall deformation of the lower rubber frame part 6 is not too large, and its corner part will not shrink significantly inward, which will not affect the assembly of the backlight and the liquid crystal glass, thereby improving the yield and assembly feasibility of the product.

[0029] Further, the gap 4 between the free ends of the upper rubber frame part 5 and the lower rubber frame part 6 is 0.2 - 0.4 mm. Specifically, in actual operation, it is found that the gap 4 between the free ends of the upper rubber frame part 5 and the lower rubber frame part 6 being 0.2 - 0.4 mm is more appropriate. If the gap 4 is too small, the effect of preventing deformation cannot be achieved. If the gap 4 is too large, the rubber frame may be more likely to deform when subjected to external force or temperature change, which will affect the positioning and stability of other components in the backlight module, and may even cause light leakage, affecting the display quality.

[0030] Furthermore, the iron frame strips 2 on the left and right sides of the base plate 1 are provided with notches 8, and the two free ends of the lower plastic frame portion 6 are provided with positioning protrusions 9 that match the notches 8. The two positioning protrusions 9 are connected by a limiting strip. Specifically, the present invention has notches 8 on the left and right sides of the base plate 1 below the iron frame strips 2, so that the positioning protrusions 9 of the lower plastic frame portion 6 can be easily accommodated. At the same time, the base plate 1 and the positioning protrusions 9 can also provide support after contact.

[0031] Furthermore, the top of the iron frame bar 2 is curved, and the iron frame bar 2 includes a first frame plate 10 and a second frame plate 11, which are formed by bending sheet metal. Specifically, the iron frame bar 2 of the present invention is directly bent from sheet metal, which simplifies the process, and its curved top is not likely to injure the operator during assembly.

[0032] Furthermore, a limiting plate 12 is extended from the side of the positioning protrusion 9. Specifically, a limiting plate 12 is extended from the side of the positioning protrusion 9. Through the setting of the limiting plate 12, when the optical film 13 is assembled, the optical film 13 can be connected below it, thereby achieving the limitation of the optical film 13.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A backlight module for preventing a plastic frame from sinking, characterized in that: Comprising: An iron frame component, the iron frame component includes a substrate, the left side, the right side and the upper side of the substrate respectively have iron frame bars, and the lower side of the substrate has a lamp socket U-shaped portion; A glue frame component, the glue frame component includes an upper glue frame portion and a lower glue frame portion, both the upper glue frame portion and the lower glue frame portion are in a "C" shape, there is a gap between the free ends of the upper glue frame portion and the lower glue frame portion, the upper glue frame portion is inside the iron frame bar, and the lower glue frame portion is below the upper glue frame portion; It further includes a film component, the film component includes an optical film and a lamp strip reflective tape, the optical film is located on the substrate, and the lamp strip reflective tape is between the optical film and the lamp socket U-shaped portion.

2. The backlight module for preventing the plastic frame from sinking inward according to claim 1, characterized in that: The gap between the free ends of the upper glue frame portion and the lower glue frame portion is 0.2 - 0.4 mm.

3. The backlight module for preventing the plastic frame from sinking inward according to claim 2, characterized in that: There are gaps below the iron frame bars on the left side and the right side of the substrate, and the two free ends of the lower glue frame portion have positioning protrusions matching the gaps, and the two positioning protrusions are connected by a limiting long strip.

4. The backlight module for preventing the plastic frame from sinking inward according to claim 3, characterized in that: The top of the iron frame bar is arc-shaped, and the iron frame bar includes a first frame plate and a second frame plate, and the first frame plate and the second frame plate are formed by bending sheet metal.

5. The backlight module for preventing the plastic frame from sinking inward according to claim 4, characterized in that: A limiting plate also extends from the side surface of the positioning protrusion.

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