A new type of backlight module

Abstract

This utility model discloses a novel backlight module, comprising a die-cast backplate and a fixed frame. The backlight module is installed within the backplate cavity of the die-cast backplate and is secured between the fixed frame and the bottom of the backplate cavity. The backlight module includes LED light strips and, from bottom to top, reflective paper, a light guide plate, a diffuser paper, and a brightness enhancement film arranged in layers, with the light-emitting surface of the LED light strip facing the light guide plate. The fixed frame includes a frame body, a vertical folded edge, and a horizontal folded edge. The vertical folded edge is extruded into a frame buckle. The die-cast backplate has a backplate flange, and a backplate slot is formed on the inner sidewall of the backplate flange, into which the frame buckle is inserted. A backplate positioning groove is formed on the upper surface of the backplate flange, into which the horizontal folded edge is embedded, and the horizontal folded edge is adhered to the bottom surface of the backplate positioning groove using frame fixing adhesive. This utility model has the advantages of novel structural design, stable and reliable assembly, and can effectively adapt to the trend of thinner designs.

Description

Technical Field

[0001] This utility model relates to the field of backlight technology, and in particular to a novel backlight module. Background Technology

[0002] Chinese utility model patent with patent number ZL202221678466.3 and title: A Separate Lampshade LCD Backlight Display Device, specifically discloses the following technical solution: A separate lampshade LCD backlight display device, comprising an assembled LCD display glass and a lower iron frame, with a backlight module adapted between the LCD display glass and the lower iron frame, the backlight module comprising a mounting frame and LED light-emitting components, a DBEF sheet, an upper brightness enhancement sheet, a lower brightness enhancement sheet, and a backlight module sequentially stacked in the mounting frame. The lower diffuser is assembled with the mounting frame and the lower iron frame. A light guide plate and a reflector are stacked between the lower diffuser and the lower iron frame. An LED light strip extends from the light-incident end of the LED light-emitting component to the light guide plate and abuts against the light guide plate. The lower iron frame includes a frame body and a fixed frame extending at an angle around the frame body. The liquid crystal display glass is assembled with the fixed frame. The fixed frame is provided with several sets of latches for engaging with the mounting frame, and the mounting frame is provided with several sets of latching grooves that match the latches.

[0003] The aforementioned split-lamp-shade LCD backlight display device has the following drawbacks, specifically:

[0004] Defect 1: The backlight module includes a DBEF sheet, an upper brightness enhancement sheet, a lower brightness enhancement sheet, a lower diffuser sheet, a light guide plate, and a reflective sheet. The above six-layer sheet-like stacked arrangement structure will increase the thickness of the entire product, which does not conform to the development trend of thinness.

[0005] Defect 2: The mounting frame and the lower iron frame are only assembled by snap-fit ​​buckles and snap-fit ​​grooves, resulting in poor assembly stability and reliability. Utility Model Content

[0006] The purpose of this utility model is to provide a new type of backlight module to address the shortcomings of the existing technology. This new backlight module has a novel structural design, stable and reliable assembly, and can effectively adapt to the trend of thinner and thinner designs.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0008] A novel backlight module includes a die-cast backplate and a fixed frame in a rectangular full-circle shape. The die-cast backplate has an upward-opening rectangular backplate receiving cavity inside. The fixed frame is fastened to the opening of the backplate receiving cavity of the die-cast backplate.

[0009] A backlight module is installed inside the back panel cavity. The backlight module is fixed between the fixed frame and the bottom of the back panel cavity, and the backlight module includes an LED light strip installed on the side wall of the back panel cavity.

[0010] The backlight module also includes reflective paper, light guide plate, diffuser paper and light enhancement film arranged in layers from bottom to top, with the light-emitting surface of the LED light strip facing the light guide plate.

[0011] The fixed frame includes a frame body, the outer edge of which is bent to form an upwardly protruding vertical folded edge, and the vertical folded edge is extruded to form an outwardly protruding, arc-shaped frame buckle; the die-cast back plate is provided with an upwardly protruding back plate flange located outside the vertical folded edge of the frame, and the inner sidewall of the back plate flange is provided with an inwardly opening back plate slot corresponding to the frame buckle of the fixed frame, and the frame buckle of the vertical folded edge of the frame is inserted into the back plate slot of the back plate flange.

[0012] The upper edge of the vertical folded edge of the frame is bent to form a horizontal folded edge that extends outward. The upper surface of the back panel flange has a back panel positioning groove corresponding to the horizontal folded edge of the frame. The horizontal folded edge of the frame is embedded into the back panel positioning groove, and the horizontal folded edge of the frame is attached to the bottom surface of the back panel positioning groove by frame fixing adhesive.

[0013] The frame has a vertical through-hole on the horizontal folded edge, and the bottom of the back panel positioning groove has an upward protruding fastening post corresponding to the fastening hole, which is fastened into the fastening hole.

[0014] The backlight module further includes several interlayer adhesives. The lower surface of the reflective paper is bonded to the bottom surface of the backplate cavity through the interlayer adhesives. The upper surface of the reflective paper is bonded to the lower surface of the light guide plate through the interlayer adhesives. The upper surface of the light guide plate is bonded to the lower surface of the diffusion paper through the interlayer adhesives. The upper surface of the diffusion paper is bonded to the lower surface of the brightness enhancement film through the interlayer adhesives.

[0015] The upper side of the fixed frame is equipped with an LCD liquid crystal glass layer, and the edge of the lower surface of the LCD liquid crystal glass layer is bonded to the upper surface of the frame body by LCD fixing adhesive.

[0016] The upper surface of the LCD liquid crystal glass layer is provided with a protective film layer.

[0017] Compared with the prior art, the present invention has the following beneficial effects, specifically:

[0018] 1. The sheet-like stacked arrangement structure of the backlight module of this utility model consists only of reflective paper, light guide plate, diffusion paper and light enhancement sheet; compared with the prior art, the sheet-like stacked arrangement structure of this utility model is simpler and thinner, which can effectively adapt to the trend of thinner development.

[0019] 2. When the fixed frame and die-cast back plate are fastened together, the frame buckle and the back plate slot are fastened together, and the horizontal fold of the frame is bonded to the bottom surface of the positioning groove of the back plate, so that double assembly and fixation can be achieved, and the assembly is stable and reliable.

[0020] 3. Therefore, the novel backlight module of this utility model has the advantages of novel structural design, stable and reliable assembly, and can effectively adapt to the trend of thinner design. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is an exploded view of the present invention.

[0024] Figure 3 This is a partially exploded view of the present invention.

[0025] exist Figures 1 to 3 This includes:

[0026] 1-Die-cast backplate; 11-Backplate receiving cavity; 12-Backplate flange; 13-Backplate slot; 14-Backplate positioning slot; 15-Snap post; 2-Fixed frame; 21-Frame body; 22-Frame vertical fold; 23-Frame buckle; 24-Frame horizontal fold; 25-Snap hole; 3-Backlight module; 31-LED light strip; 32-Reflective paper; 33-Light guide plate; 34-Diffuser paper; 35-Brightness enhancement film; 36-Interlayer fixing adhesive; 4-Frame fixing adhesive; 5-LCD liquid crystal glass layer; 6-LCD fixing adhesive; 7-Protective film layer. Detailed Implementation

[0027] The present invention will now be described in conjunction with specific embodiments.

[0028] Example 1, as Figures 1 to 3 As shown, a novel backlight module includes a die-cast backplate 1 and a rectangular frame 2. The die-cast backplate 1 has an upward-opening rectangular backplate receiving cavity 11 inside. The fixed frame 2 is fastened to the opening of the backplate receiving cavity 11 of the die-cast backplate 1.

[0029] Among them, such as Figure 2 As shown, a backlight module 3 is installed in the back panel cavity 11. The backlight module 3 is fixed between the fixed frame 2 and the bottom of the back panel cavity 11, and the backlight module 3 includes an LED light strip 31 installed on the side wall of the back panel cavity 11.

[0030] Furthermore, such as Figure 2 As shown, the backlight module 3 also includes a reflective paper 32, a light guide plate 33, a diffuser paper 34, and a light enhancement film 35 arranged in layers from bottom to top, with the light-emitting surface of the LED light strip 31 facing the light guide plate 33.

[0031] Furthermore, such as Figures 1 to 3 As shown, the fixed frame 2 includes a frame body 21, the outer edge of the frame body 21 is bent to form an upwardly protruding vertical folded edge 22, and the vertical folded edge 22 is extruded to form an outwardly protruding and arc-shaped frame buckle 23; the die-cast back plate 1 is provided with an upwardly protruding back plate flange 12 located outside the vertical folded edge 22, and the inner side wall of the back plate flange 12 is provided with an inwardly opening back plate slot 13 corresponding to the frame buckle 23 of the fixed frame 2, and the frame buckle 23 of the vertical folded edge 22 is inserted into the back plate slot 13 of the back plate flange 12.

[0032] In addition, such as Figures 1 to 3 As shown, the upper edge of the vertical folded edge 22 of the frame is bent to form a horizontal folded edge 24 that extends outward horizontally. The upper surface of the back plate flange 12 is provided with a back plate positioning groove 14 corresponding to the horizontal folded edge 24. The horizontal folded edge 24 of the frame is embedded in the back plate positioning groove 14, and the horizontal folded edge 24 of the frame is attached to the bottom surface of the back plate positioning groove 14 by the frame fixing adhesive 4.

[0033] It should be noted that, for the backlight module 3 of this embodiment, its sheet-like stacked arrangement structure consists only of reflective paper 32, light guide plate 33, diffusion paper 34, and light enhancement sheet 35; compared with the prior art, the sheet-like stacked arrangement structure of this embodiment is simpler and thinner, which can effectively adapt to the trend of thinner design.

[0034] In the process of fastening and assembling the die-cast back plate 1 and the fixed frame 2 in this embodiment, the fixed frame 2 is first aligned with the upper opening of the back plate receiving cavity 11 and the fixed frame 2 is pressed downward into the upper opening of the back plate receiving cavity 11. During this process, the arc-shaped frame buckle 23 of the vertical folded edge 22 of the frame first abuts against the inner side wall of the back plate flange 12 and elastically contracts inward. When the frame buckle 23 moves down to the back plate slot 13 position of the back plate flange 12, the frame buckle 23 elastically resets and inserts into the back plate slot 13. At this time, the top surface of the back plate slot 13 limits and blocks the upper surface of the frame buckle 23. That is, the fixed frame 2 is fastened and assembled to the die-cast back plate 1 by fastening the frame buckle 23 and the back plate slot 13. Furthermore, after the fixed frame 2 is pressed into place downwards, the horizontal fold 24 of the fixed frame 2 is embedded into the back plate positioning groove 14 of the back plate flange 12, and the horizontal fold 24 is bonded to the bottom surface of the back plate positioning groove 14 by the frame fixing adhesive 4. For the above-mentioned fastening assembly method of the fixed frame 2 and the die-cast back plate 1, the fastening of the frame buckle 23 with the back plate buckle 13 and the bonding of the horizontal fold 24 of the frame with the bottom surface of the back plate positioning groove 14 can achieve double assembly and fixation, resulting in stable and reliable assembly.

[0035] In summary, the novel backlight module of this embodiment has the advantages of novel structural design, stable and reliable assembly, and can effectively adapt to the trend of thinner design through the above structural design.

[0036] Example 2, as Figure 1 and Figure 3 As shown, the difference between this embodiment 2 and embodiment 1 is that: the horizontal folded edge 24 of the frame has a vertical through-hole 25, and the bottom surface of the back plate positioning groove 14 is provided with an upward protruding fastening post 15 corresponding to the fastening hole 25, and the fastening post 15 is fastened into the fastening hole 25.

[0037] By using the buckle post 15 and buckle hole 25, this second embodiment can further improve the stability and reliability of the assembly of the fixed frame 2 and the die-cast back plate 1.

[0038] Example 3, as Figure 2 As shown, the difference between this embodiment 3 and embodiment 1 is that the backlight module 3 further includes several interlayer fixing adhesives 36. The lower surface of the reflective paper 32 is bonded to the bottom surface of the back plate accommodating cavity 11 through the interlayer fixing adhesives 36. The upper surface of the reflective paper 32 is bonded to the lower surface of the light guide plate 33 through the interlayer fixing adhesives 36. The upper surface of the light guide plate 33 is bonded to the lower surface of the diffusion paper 34 through the interlayer fixing adhesives 36. The upper surface of the diffusion paper 34 is bonded to the lower surface of the brightness enhancement film 35 through the interlayer fixing adhesives 36.

[0039] Example 4, as Figure 1 and Figure 2As shown, the difference between this embodiment four and embodiment one is that: an LCD liquid crystal glass layer 5 is installed on the upper side of the fixed frame 2, and the edge of the lower surface of the LCD liquid crystal glass layer 5 is bonded to the upper surface of the frame body 21 by LCD fixing adhesive 6.

[0040] Example 5, as Figure 1 and Figure 2 As shown, the difference between this fifth embodiment and the fourth embodiment is that a protective film layer 7 is provided on the upper surface of the LCD liquid crystal glass layer 5.

[0041] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A novel backlight module, comprising a die-cast backplate (1) and a fixed frame (2) in the shape of a rectangle, wherein the die-cast backplate (1) has an upward-opening and rectangular backplate receiving cavity (11) formed inside, and the fixed frame (2) is fastened to the opening position of the backplate receiving cavity (11) of the die-cast backplate (1); A backlight module (3) is installed in the back panel cavity (11). The backlight module (3) is fixed between the fixed frame (2) and the bottom of the back panel cavity (11). The backlight module (3) includes an LED light strip (31) installed on the side wall of the back panel cavity (11). characterized in that The backlight module (3) also includes reflective paper (32), light guide plate (33), diffuser paper (34), and light enhancement film (35) arranged in sequence from bottom to top, with the light-emitting surface of the LED light strip (31) facing the light guide plate (33). The fixed frame (2) includes a frame body (21), the outer edge of the frame body (21) is bent to form an upward protruding vertical fold edge (22), and the vertical fold edge (22) is extruded to form an outward protruding and arc-shaped frame buckle (23); the die-cast back plate (1) is provided with an upward protruding back plate flange (12) located outside the vertical fold edge (22), the inner side wall of the back plate flange (12) is provided with an inward opening back plate slot (13) corresponding to the frame buckle (23) of the fixed frame (2), and the frame buckle (23) of the vertical fold edge (22) is inserted into the back plate slot (13) of the back plate flange (12); The upper edge of the vertical folded edge (22) of the frame is bent to form a horizontal folded edge (24) that extends outward horizontally. The upper surface of the back plate flange (12) is provided with a back plate positioning groove (14) corresponding to the horizontal folded edge (24). The horizontal folded edge (24) of the frame is embedded into the back plate positioning groove (14), and the horizontal folded edge (24) of the frame is attached to the bottom surface of the back plate positioning groove (14) by the frame fixing adhesive (4).

2. The novel backlight module according to claim 1, characterized in that: The horizontal folded edge (24) of the frame is provided with a vertical through-hole (25), and the bottom surface of the back plate positioning groove (14) is provided with an upward protruding fastening post (15) corresponding to the fastening hole (25), and the fastening post (15) is fastened into the fastening hole (25).

3. The novel backlight module according to claim 1, characterized in that: The backlight module (3) also includes several interlayer fixing adhesives (36). The lower surface of the reflective paper (32) is bonded to the bottom surface of the back plate receiving cavity (11) through the interlayer fixing adhesives (36). The upper surface of the reflective paper (32) is bonded to the lower surface of the light guide plate (33) through the interlayer fixing adhesives (36). The upper surface of the light guide plate (33) is bonded to the lower surface of the diffusion paper (34) through the interlayer fixing adhesives (36). The upper surface of the diffusion paper (34) is bonded to the lower surface of the brightness enhancement film (35) through the interlayer fixing adhesives (36).

4. The novel backlight module according to claim 1, characterized in that: An LCD liquid crystal glass layer (5) is installed on the upper side of the fixed frame (2), and the edge of the lower surface of the LCD liquid crystal glass layer (5) is bonded to the upper surface of the frame body (21) by LCD fixing adhesive (6).

5. A novel backlight module according to claim 4, characterized in that: A protective film layer (7) is provided on the upper surface of the LCD liquid crystal glass layer (5).

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