Backplane, backlight module and display device

Abstract

The utility model discloses a backboard, backlight unit and display device relates to display device technical field, wherein, the backboard one end opening set, and its open end forms and has the butt joint board part, the front side end of butt joint board part has the first butt joint surface, and the back of butt joint board part one side forms the backboard groove, the first butt joint surface is used for the liquid crystal glass placement, and the backboard groove is used for the optical film piece insertion, the backboard groove has the second butt joint surface towards the open setting, the backboard still includes the limit board part, and the limit board part sets up in the butt joint board part towards the second butt joint surface one side, is used for the limit optical film piece, the utility model provides technical scheme through setting limit board part in the butt joint board part towards the second butt joint surface one side, thereby restricts optical film piece towards the first butt joint surface direction movement, makes optical film piece and the liquid crystal glass between formation safety distance, thereby reaches the technical effect of preventing both mutual abrasion.

Description

Technical Field

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

[0002] The scratches on LCD panels and optical films have been a persistent problem that has plagued the entire industry for many years. This is because, due to the large size of televisions, the LCD panels sometimes deform inwards, while the optical films (such as light guide plates and optical films) deform outwards. The amount of deformation reduces the gap between the two, but due to the needs of display effect and the aesthetic requirements of ultra-thin bezels, this gap cannot be made too large.

[0003] Because the optical film can easily move back and forth between the gaps, this can cause scratches between the optical film and the panel. Utility Model Content

[0004] The main purpose of this utility model is to provide a backplate, a backlight module and a display device, and more particularly to provide a backplate designed to limit the light guide structure in the direction toward the panel, so as to reduce the possibility of the light guide structure coming into contact with the panel.

[0005] To achieve the above objectives, the present invention proposes a backplate with an opening at one end, forming a receiving plate portion at the opening end. The front end of the receiving plate portion has a first receiving surface, and a backplate groove is formed on one side of the back of the receiving plate portion. The first receiving surface is used for placing liquid crystal glass, and the backplate groove is used for inserting an optical film. The backplate groove has a second receiving surface facing the opening. The backplate also includes a limiting plate portion, which is disposed on the side of the receiving plate portion facing the second receiving surface, for limiting the optical film.

[0006] In one embodiment, the open end of the back plate is bent inward to form a bent plate portion, and the bent plate portion is partially bent backward to form the receiving plate portion and the limiting plate portion.

[0007] In one embodiment, the end face of the limiting plate portion facing the second receiving surface is at least partially configured as an arc surface.

[0008] In one embodiment, a first extension plate portion extends from the limiting plate portion toward the bottom wall of the back plate groove;

[0009] The arc surface is provided between the first extension plate portion and the limiting plate portion.

[0010] In one embodiment, the first extension plate portion bends and extends into a second extension plate portion toward the receiving plate portion;

[0011] The arc surface is provided between the first extension plate portion and the second extension plate portion.

[0012] In one embodiment, the width of the first extension plate portion is greater than its thickness.

[0013] In one embodiment, the back plate is provided with an insertion port, which is provided on one side of the opening end in the circumferential direction, and the insertion port is connected to the opening.

[0014] This utility model also proposes a backlight module, which includes a back plate with an opening at one end. A receiving plate portion is formed at the opening end. The front end of the receiving plate portion has a first receiving surface, and a back plate groove is formed on one side of the back side of the receiving plate portion. The first receiving surface is used for placing liquid crystal glass, and the back plate groove is used for inserting an optical film. The back plate groove has a second receiving surface facing the opening. The back plate also includes a limiting plate portion, which is disposed on the side of the receiving plate portion facing the second receiving surface, for limiting the optical film.

[0015] In one embodiment, the backlight module further includes:

[0016] An optical film, part of which is inserted into the back plate groove;

[0017] A decorative panel is installed on one side of the back panel and is positioned corresponding to the insertion port.

[0018] This utility model also proposes a display device, which includes a backlight module. The backlight module includes a back plate with an opening at one end. A receiving plate portion is formed at the opening end. The front end of the receiving plate portion has a first receiving surface, and a back plate groove is formed on one side of the back side of the receiving plate portion. The first receiving surface is used for placing liquid crystal glass, and the back plate groove is used for inserting an optical film. The back plate groove has a second receiving surface facing the opening. The back plate also includes a limiting plate portion, which is disposed on the side of the receiving plate portion facing the second receiving surface, for limiting the optical film.

[0019] The technical solution of this utility model adopts a limiting plate on the side of the receiving plate facing the second receiving surface, thereby restricting the movement of the optical film toward the first receiving surface, so as to form a safe distance between the optical film and the liquid crystal glass, thereby achieving the technical effect of preventing the two from scratching each other. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 A partial structural schematic diagram of an embodiment of the backplate provided by this utility model;

[0022] Figure 2 A partial structural schematic diagram of another embodiment of the backplate provided by this utility model;

[0023] Figure 3 A partial structural schematic diagram of another embodiment of the backplate provided by this utility model;

[0024] Figure 4 A partial structural schematic diagram of another embodiment of the backplate provided by this utility model;

[0025] Figure 5 This is a structural schematic diagram of an embodiment of the backlight module provided by this utility model.

[0026] Explanation of icon numbers:

[0027] 100. Back panel; 1. Bending plate section; 11. Receiving plate section; 111. First receiving surface; 12. Limiting plate section; 13. First extension plate section; 14. Second extension plate section; 15. Arc surface; 2. Back panel groove; 21. Second receiving surface; 1000. Backlight module; 200. Optical film; 300. Decorative panel; 400. LCD glass.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0031] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0032] The scratching problem of LCD panels and optical films has been a persistent issue plaguing the industry for many years. This is because, due to the large size of televisions, the LCD panel sometimes deforms inwards, while the optical films (such as light guide plates and optical films) deform outwards. This deformation reduces the gap between the two, but due to display requirements and the aesthetic need for ultra-thin bezels, this gap cannot be made too large. Since the optical films can easily move back and forth within this gap, scratches can easily occur between the optical films and the panel.

[0033] This utility model proposes a back plate.

[0034] Please see Figure 1 In one embodiment of the present invention, the back plate 100 has an opening at one end, and a receiving plate portion 11 is formed at the opening end. The front end of the receiving plate portion 11 has a first receiving surface 111, and a back plate groove 2 is formed on one side of the back side of the receiving plate portion 11. The first receiving surface 111 is used for placing the liquid crystal glass 400, and the back plate groove 2 is used for inserting the optical film 200. The back plate groove 2 has a second receiving surface 21 facing the opening. The back plate 100 also includes a limiting plate portion 12, which is disposed on the side of the receiving plate portion 11 facing the second receiving surface 21, and is used to limit the optical film 200.

[0035] The technical solution of this utility model employs a limiting plate portion 12 on the side of the receiving plate portion 11 facing the second receiving surface 21, thereby restricting the movement of the optical film 200 toward the first receiving surface 111, creating a safe distance between the optical film 200 and the liquid crystal glass 400, thus achieving the technical effect of preventing mutual scratches between the two. The limiting plate portion 12 and the receiving plate portion 11 can be integrally formed or assembled together. If assembled together, the limiting plate portion 12 and the receiving plate portion 11 need to be fixedly connected and the connection needs to be reliable to ensure that there is no displacement between the two and to prevent the limiting plate portion 12 from being exposed in the groove of the back plate groove 2.

[0036] In existing technologies, there is a method where the pressure strip is positioned on the side of the receiving plate 11 facing the second receiving surface 21. In this method, the pressure strip is bonded to the receiving plate 11. To ensure a strong bond, the bonding process includes inserting a jig into the back plate groove 2, pressing the pressure strip against the receiving plate 11 with the jig, and simultaneously moving the jig along the extension direction of the pressure strip to press it firmly at various points. However, since the pressure strip is not firmly bonded to the receiving plate 11 at this point, and the force applied by the jig to the pressure strip cannot be guaranteed to be perpendicular to the receiving plate 11, the pressure strip may become misaligned and protrude from the opening of the back plate groove 2. There is also the possibility of aging at the bonding points, causing the pressure strip to detach, which could further misalign and protrude from the opening of the back plate groove 2, affecting aesthetics and the viewing experience. These issues stem from the potential for installation position misalignment and detachment between the two components. Therefore, it is preferable to integrally form the limiting plate portion 12 and the receiving plate portion 11. In one embodiment, the open end of the back plate 100 is bent inward to form a bent plate portion 1, and the bent plate portion 1 is partially bent backward to form the receiving plate portion 11 and the limiting plate portion 12. Since the two are formed by bending the bent plate portion 1, they are rigidly connected and will not shift. In addition, the bending process is simpler than the jointing process and can reduce the number of installation components—the pressure strip, making it more practical and economical. It is worth mentioning that the included angle between the bent limiting plate portion 12 and the receiving plate portion 11 is less than or equal to 90 degrees, so that the limiting plate portion 12 is located within the back plate groove 2.

[0037] Since the end face of the limiting plate portion 12 is formed by cutting sheet metal, there may be burrs on its end face, and the optical film 200 may be scratched when its end face comes into contact with the optical film 200. In order to remove the sharp edges and burrs at the end face, the end face of the limiting plate portion 12 facing the second receiving surface 21 is at least partially set as an arc surface 15.

[0038] Because sharp edges and burrs exist on the end side of the limiting plate portion 12 at both the position near and away from the opening of the back plate groove 2, the following improvements are made to eliminate these sharp edges and burrs:

[0039] Please see Figure 2 A first extension plate portion 13 extends from the limiting plate portion 12 towards the bottom wall of the back plate groove 2; an arc surface 15 is provided between the first extension plate portion 13 and the limiting plate portion 12. That is, the limiting plate portion 12 and the first extension plate portion 13 are formed by bending the same component, and after bending, an arc surface 15 is naturally formed on the side opposite to the bending direction. This arc surface 15 is located at the junction of the side of the limiting plate portion 12 facing the groove opening of the back plate groove 2 and the side of the first extension plate portion 13 facing the second receiving surface 21.

[0040] Please see Figure 3 After one bending, one of the burr-bearing edges is reduced, while one remains at the end of the first extension plate portion 13. Further details can be found in the following documentation. Figure 4 The first extension plate portion 13 bends and extends towards the receiving plate portion 11 to form a second extension plate portion 14; the arc surface 15 is provided between the first extension plate portion 13 and the second extension plate portion 14. That is, the limiting plate portion 12, the first extension plate portion 13, and the second extension plate portion 14 are formed by continuous bending of the same component, and after bending, an arc surface 15 is naturally formed on the side opposite to the bending direction. This arc surface 15 is located at the junction of the side of the second extension plate portion 14 facing the bottom of the back plate groove 2 and the side of the first extension plate portion 13 facing the second receiving surface 21.

[0041] In embodiments where the first extension plate portion 13 exists, namely Figure 2 and Figure 4 In the corresponding embodiment, the width of the first extension plate portion 13 is greater than its thickness. Please refer to [link / reference]. Figure 3 This results in a larger contact area between the first extension plate portion 13 and the optical film 200. Consequently, the contact stress on the optical film 200 is reduced during contact.

[0042] After installation, the backplate 100 has a top side and a bottom side, as well as a left side and a right side. The receiving plate portion 11 and the backplate groove 2 are arranged corresponding to the top side, left side, and right side of the backplate 100. An insertion port is provided on the bottom side, that is, the insertion port is arranged on one side of the circumferential direction of the opening end, and the insertion port is connected to the opening. The three sides of the optical film 200 are installed in the backplate groove 2.

[0043] This utility model also proposes a backlight module 1000, please refer to [link / reference]. Figure 5 The backlight module 1000 includes a back plate 100. The specific structure of the back plate 100 is as described in the above embodiments. Since the backlight module 1000 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0044] To prevent the optical film 200 from sliding out of the insertion port on the ground side, the backlight module 1000 further includes: the optical film 200 partially inserted into the back plate groove 2; and a decorative plate 300 installed on one side of the back plate 100, corresponding to the insertion port. This serves to support the optical film 200, confining it within the back plate 100.

[0045] This utility model also proposes a display device, which includes a backlight module 1000. The backlight module 1000 includes a back plate 100, one end of which is open, and a receiving plate portion 11 is formed at the open end. The front end of the receiving plate portion 11 has a first receiving surface 111, and a back plate groove 2 is formed on one side of the back side of the receiving plate portion 11. The first receiving surface 111 is used for placing a liquid crystal glass 400, and the back plate groove 2 is used for inserting an optical film 200. The back plate groove 2 has a second receiving surface 21 facing the open end. The back plate 100 also includes a limiting plate portion 12, which is disposed on the side of the receiving plate portion 11 facing the second receiving surface 21, and is used to limit the optical film 200. This display device adopts all the technical solutions of all the above embodiments, and therefore has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0046] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A backplate, characterized in that, The back plate has an opening at one end, and a receiving plate portion is formed at the opening end. The front end of the receiving plate portion has a first receiving surface, and a back plate groove is formed on one side of the back side of the receiving plate portion. The first receiving surface is used for placing liquid crystal glass, and the back plate groove is used for inserting optical films. The backplate groove has a second receiving surface facing the opening. The backplate also includes a limiting plate portion, which is disposed on the side of the receiving plate portion facing the second receiving surface, for limiting the optical film.

2. The backplate as described in claim 1, characterized in that, The open end of the back plate is bent inward to form a bent plate portion, and the bent plate portion is bent backward to form the receiving plate portion and the limiting plate portion.

3. The backplate as described in claim 2, characterized in that, The end face of the limiting plate facing the second receiving surface is at least partially configured as an arc surface.

4. The backplate as described in claim 3, characterized in that, The first extension plate extends from the limiting plate portion toward the bottom wall of the back plate groove; The arc surface is provided between the first extension plate portion and the limiting plate portion.

5. The backplate as described in claim 4, characterized in that, The first extension plate portion bends and extends into a second extension plate portion in the direction of the receiving plate portion; The arc surface is provided between the first extension plate portion and the second extension plate portion.

6. The backplate as described in claim 4, characterized in that, The width of the first extension plate is greater than its thickness.

7. The backplate as described in claim 1, characterized in that, The back plate is provided with an insertion port, which is located on one side of the opening end in the circumferential direction, and the insertion port is connected to the opening.

8. A backlight module, characterized in that, Includes the backplate as described in any one of claims 1 to 7.

9. The backlight module as described in claim 8, characterized in that, The backlight module also includes: An optical film, part of which is inserted into the back plate groove; A decorative panel is installed on one side of the back panel and is positioned corresponding to the insertion port.

10. A display device, characterized in that, Includes the backlight module as described in any one of claims 8 to 9.

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