Backlight module capable of improving assembly efficiency

Abstract

The backlight module comprises a lower iron stand, a reflector plate, a light guide plate and an FPC, the lower iron stand comprises a bottom plate and a side wall extending upwards from the edge of the bottom plate, the side wall located at the leading-out position of the FPC is provided with a folded edge, the folded edge is bent downwards and abuts against the bottom plate, the reflector plate is arranged on the upper surface of the bottom plate, and the light guide plate is arranged on the lower surface of the bottom plate. One end of the reflector plate is provided with an extension lug, the extension lug covers the end part of the folded edge, the light guide plate is arranged above the reflector plate, the FPC is arranged on one side of the light guide plate, and the FPC covers the extension lug and is outwards led out towards the folded edge. As the end part of the folded edge is covered by the extension lug additionally arranged on the reflector plate, burrs at the end part of the folded edge are also covered by the extension lug, and the FPC is covered above the extension lug, the burrs at the end part of the folded edge do not damage the FPC, protective paper does not need to be arranged on the FPC, and the protective paper of the corresponding size does not need to be cut, so that the operation of manually attaching the covered edge is omitted, and the production efficiency is improved. Therefore, the operation becomes simple, and the assembling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a display technical field more specifically, relate to a kind of backlight module of improving assembly efficiency. BACKGROUND

[0002] Liquid crystal display screen needs backlight module to provide light source, usually backlight module will lead out FPC and display module is connected, for the backlight module of lamp strip in bottom, FPC often needs to pass through the opening of the lower iron stand of backlight module again and lead out, since the burr of the opening of lower iron stand and burr exist scratch FPC risk, once the FPC of backlight module is scratched, will lead to open circuit, will lead to backlight module cannot be normally lit, and then affect the display function of display module, so FPC usually increases protective paper at the opening of lower iron stand, to prevent the burr of lower iron stand scratch FPC, but this design needs to cut the protective paper of corresponding size, also needs manual to paste edge, to lead to difficult operation, reduced assembly efficiency. SUMMARY

[0003] The technical problem to be solved by the utility model is how to improve the assembly efficiency of the backlight module while avoiding the scratching of the FPC by the burr.

[0004] The technical problem to be solved by the utility model is solved by the following technical scheme.

[0005] To solve the above technical problem, the utility model provides a kind of backlight module of improving assembly efficiency, it includes lower iron stand, reflector sheet, light guide plate and FPC, the lower iron stand includes bottom plate and the side wall that is extended upwards from the edge of bottom plate, the side wall at FPC lead-out place is provided with flange, the flange is bent downwards and is in abutment with bottom plate, the reflector sheet is set on the upper surface of bottom plate, one end of the reflector sheet is provided with extension ear, the extension ear covers the end of flange, the light guide plate is set above the reflector sheet, the FPC is set on one side of light guide plate, and the FPC covers on the extension ear and is led out towards flange.

[0006] As a preferred embodiment of the backlight module of improving assembly efficiency provided by the utility model, the upper side of the bottom plate on one side of the light guide plate is provided with glue frame.

[0007] As a preferred embodiment of the backlight module of improving assembly efficiency provided by the utility model, the glue frame is provided with thinning avoidance part avoiding the flange, FPC and extension ear.

[0008] As a preferred embodiment of the backlight module of improving assembly efficiency provided by the utility model, the thickness of the thinning avoidance part is 0.5mm-0.7mm.

[0009] As a preferred embodiment of the backlight module with improved assembly efficiency provided by the utility model, a plurality of LED lamps are arranged on the FPC.

[0010] As a preferred embodiment of the backlight module with improved assembly efficiency provided by the utility model, two U-shaped holes are arranged on the bottom plate and the side wall, and the excess material between the two U-shaped holes forms the folded edge.

[0011] As a preferred embodiment of the backlight module with improved assembly efficiency provided by the utility model, the length of the folded edge is 2.0 mm.

[0012] As a preferred embodiment of the backlight module with improved assembly efficiency provided by the utility model, the overlapping length of the folded edge and the extension ear is 0.5 mm-1.2 mm.

[0013] As a preferred embodiment of the backlight module with improved assembly efficiency provided by the utility model, a reinforcing plate is arranged on the FPC.

[0014] As a preferred embodiment of the backlight module with improved assembly efficiency provided by the utility model, the reinforcing plate is located at the extension part.

[0015] The utility model has the following beneficial effects:

[0016] Since the end of the folded edge is covered by the extension ear added by the reflecting sheet, the burr at the end of the folded edge is also covered by the extension ear, and the FPC is covered above the extension ear, at this time, the burr at the end of the folded edge will not damage the FPC, and it is not necessary to arrange a protective paper on the FPC, and then it is not necessary to cut a protective paper with a corresponding size, thereby the operation is simple, and the assembly efficiency of the backlight module is improved while avoiding the FPC being scratched by the burr. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the scheme in the application, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 The structure diagram of the backlight module with improved assembly efficiency provided by the utility model.

[0019] Figure 2 For Figure 1 The enlarged view of A in the middle.

[0020] Figure 3 ForFigure 1 exploded view of the structure.

[0021] Figure 4 is Figure 1 exploded view of the structure.

[0022] Figure 5 is Figure 1 exploded view of the structure.

[0023] BRIEF DESCRIPTION OF DRAWINGS

[0024] lower iron stand 1; reflecting sheet 2; light guide plate 3; FPC 4; bottom plate 11; side wall 12; folded edge 13; extension ear 21;

[0025] LED lamp 5; U-shaped hole 14; reinforcing plate 41. DETAILED DESCRIPTION

[0026] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, the terms "first", "second", "third" are only for description purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0029] The utility model provides a kind of improve the assembly efficiency of backlight unit, it includes lower iron stand, reflector sheet, light guide plate and FPC, the lower iron stand includes bottom plate and the side wall extended upwards from the edge of the bottom plate, the side wall in FPC lead-out place is provided with flanging, the flanging is bent downwards and is abutted with the bottom plate, the reflector sheet is set on the upper surface of the bottom plate, one end of the reflector sheet is provided with extension ear, the extension ear covers the end of the flanging, the light guide plate is set above the reflector sheet, the FPC is set in one side of the light guide plate, the FPC is covered on the extension ear and is led out outward towards flanging.

[0030] Since the end of flanging is covered by the extension ear additionally set by reflector sheet, the burr of flanging end is also covered by extension ear, and FPC is covered above extension ear, at this time, the burr of flanging end will not damage FPC, and there is no need to set protective paper on FPC, and then there is no need to cut the protective paper of corresponding size, manual operation of adding and pasting edge protection is saved, so that operation becomes simple, and then it improves the assembly efficiency of backlight unit while avoiding FPC being scratched by burr.

[0031] In order to enable the personnel in the technical field to better understand the present application scheme, the technical scheme in the embodiment of the present application will be described clearly and completely in conjunction with the drawings. The utility model will be described in detail in conjunction with the drawings and examples, the examples of the embodiment are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar function. The examples described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0032] Example 1, please refer to Figures 1 to 5The utility model provides a backlight unit of improving assembly efficiency, it includes lower iron stand 1, reflector sheet 2, light guide plate 3 and FPC 4, lower iron stand 1 includes bottom plate 11 and by the side wall 12 of bottom plate 11 edge upward extension, be provided with the flanging 13 on the side wall 12 at FPC 4 lead-out place, flanging 13 is bent downward and is in abutment with bottom plate 11, reflector sheet 2 is set up in the upper surface of bottom plate 11, and one end of reflector sheet 2 is provided with extension ear 21, and extension ear 21 covers the end of flanging 13, light guide plate 3 is set up above reflector sheet 2, and FPC 4 is set up in one side of light guide plate 3, and FPC 4 covers on extension ear 21 and leads out outward to flanging 13 place. Since the end of flanging 13 is covered by the extension ear 21 of reflector sheet 2 additional, the burr of flanging 13 end is also covered by extension ear 21, and FPC 4 covers above extension ear 21, at this time, the burr of flanging 13 end will not damage FPC 4, and it is not necessary to set up protective paper on FPC 4, and then it is not necessary to cut the protective paper of corresponding size, saves the operation of manual pasting edge protection, thereby making the operation simple, and thereby making it improve the assembly efficiency of backlight unit while avoiding the scratch of FPC 4 by burr.

[0033] Embodiment 2, please refer to Figures 1 to 5 As the further optimization scheme of embodiment 1, in the embodiment, the upper surface of the bottom plate 11 on one side of the light guide plate 3 is provided with a glue frame, the glue frame is provided with a thinning avoidance part avoiding the flanging 13, the FPC 4 and the extension ear 21, and the thickness of the thinning avoidance part is 0.5mm-0.7mm, so that the wire outlet of the FPC 4 can be moved upward to increase the assembly space.

[0034] Further, the FPC 4 is provided with a plurality of LED lamps 5, in the embodiment, the number of the LED lamps 5 is 24 and arranged in a column on the FPC 4, the LED lamps 5 and the FPC 4 are arranged on the light inlet side of the light guide plate 3, and the flanging 13 is located on the right side of the light inlet side of the light guide plate 3.

[0035] Further, two U-shaped holes 14 are formed on the bottom plate 11 and the side wall 12, and the excess material between the two U-shaped holes 14 forms the flanging 13, the flanging 13 forms an outlet after being bent, the FPC 4 is lifted by the flanging 13 and the extension ear 21 and led out from the outlet, and the width of the two U-shaped holes 14 is large, which avoids the scratch between the FPC 4 and the side wall 12, and further avoids the scratch of the FPC 4 by the burr of the side wall 12.

[0036] Further, the length of the flanging 13 is 2.0mm, and the overlapping length of the flanging 13 and the extension ear 21 is 0.5mm-1.2mm, which is equivalent to adding an ear to the reflector sheet 2 to avoid the scratch of the backlight FPC 4 by the burr of the edge of the flanging 13 of the lower iron stand 1.

[0037] Further, the FPC 4 is provided with a reinforcing plate 41 at the extension portion, thereby increasing the strength at the extension portion.

[0038] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise clearly limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and on the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or equivalently replace some technical features. Any equivalent structure made by using the contents of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the scope of the patent protection of the present application.

Claims

1. A backlight module for improving assembly efficiency, characterized in that, It includes a lower frame, a reflector, a light guide plate, and an FPC. The lower frame includes a base plate and a side wall extending upward from the edge of the base plate. A folded edge is provided on the side wall at the FPC lead-out point. The folded edge is bent downward and abuts against the base plate. The reflector is disposed on the upper surface of the base plate. One end of the reflector is provided with an extension ear. The extension ear covers the end of the folded edge. The light guide plate is disposed above the reflector. The FPC is disposed on one side of the light guide plate. The FPC covers the extension ear and extends outward toward the folded edge.

2. The backlight module with improved assembly efficiency according to claim 1, characterized in that, A plastic frame is provided above the base plate on one side of the light guide plate.

3. The backlight module with improved assembly efficiency according to claim 2, characterized in that, The frame is provided with a thinning avoidance portion to avoid the folded edge, FPC and extension ear.

4. The backlight module with improved assembly efficiency according to claim 3, characterized in that, The thickness of the thinned clearance portion is 0.5mm-0.7mm.

5. The backlight module for improving assembly efficiency according to claim 1, characterized in that, The FPC is equipped with multiple LED lights.

6. The backlight module with improved assembly efficiency according to claim 1, characterized in that, Two U-shaped holes are formed on the base plate and the side wall, and the excess material between the two U-shaped holes forms the folded edge.

7. The backlight module for improving assembly efficiency according to claim 1, characterized in that, The length of the folded edge is 2.0 mm.

8. The backlight module for improving assembly efficiency according to claim 1, characterized in that, The overlap length between the folded edge and the extended ear is 0.5mm-1.2mm.

9. The backlight module for improving assembly efficiency according to claim 1, characterized in that, The FPC is equipped with a reinforcing plate.

10. The backlight module with improved assembly efficiency according to claim 9, characterized in that, The reinforcing plate is located at the extension.

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