Backlight module and electronic equipment
By setting grooves and protrusions on the inner side of the backlight iron frame, the problem of vibration and disengagement of the light guide plate in the vehicle-mounted backlight module is solved, and the stable connection of the light guide plate is achieved, and the stability and vibration resistance of the product are improved.
Patent Information
- Application Number
- CN202422147046.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-02
Smart Images
Figure CN223139890U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic devices, in particular to a backlight module and an electronic device. Background Art
[0002] In the existing backlight modules, especially in in-vehicle backlight modules, except for the backlight iron frame, the light guide plate is the heaviest in terms of quality. A common structure is that the light guide plate is adhered to the reflective sheet through the reflective sheet adhesive, and then the reflective sheet is adhered to the backlight iron frame through the reflective sheet adhesive to achieve the purpose of fixing the light guide plate and the backlight iron frame together. However, during use, especially when facing a large-sized light guide plate, relying solely on the reflective sheet adhesive cannot fix the light guide plate and the backlight iron frame together; because the reflective sheet adhesive cannot be infinitely thickened and its viscosity cannot be infinitely increased. Especially during the vibration test, the light guide plate is extremely likely to move in the direction away from the reflective sheet, thus detaching from the backlight iron frame, and further affecting the quality of the entire product.
[0003] How to solve the above technical problems has become an urgent technical problem in the industry. Summary of the Invention
[0004] In order to at least solve the above technical problems, the purpose of the utility model is to provide a backlight module. By placing the protruding part in the groove, the movement of the light guide plate in the direction away from the bottom of the backlight iron frame is restricted, and the phenomenon that the light guide plate detaches from the backlight iron frame is avoided.
[0005] To achieve the above purpose, the backlight iron frame provided in this application includes:
[0006] A backlight iron frame, with a light guide plate provided at the bottom of the backlight iron frame;
[0007] On the inner side surface of the backlight iron frame, a groove is provided corresponding to the position of the light guide plate;
[0008] The inner side surface of the light guide plate facing the backlight iron frame is provided with a protruding part;
[0009] The protruding part matches the groove;
[0010] The protruding part is placed in the groove;
[0011] The matching of the protruding part and the groove is used to limit the movement of the light guide plate in the direction away from the bottom of the backlight iron frame.
[0012] Further, there are multiple grooves;
[0013] There are multiple protruding parts;
[0014] The number of protruding parts matches the number of grooves.
[0015] Further, the multiple grooves are evenly distributed on the inner side surface of the backlight module.
[0016] Further, the length dimension of the protrusion matches the depth dimension of the groove.
[0017] Further, the thickness dimension of the protrusion matches the height dimension of the groove.
[0018] Further, the thickness dimension of the protrusion is not greater than the thickness dimension of the light guide plate.
[0019] Further, when the thickness dimension of the protrusion is less than the thickness dimension of the light guide plate, the side of the protrusion facing the bottom of the backlight iron frame is flush with the side of the light guide plate facing the bottom of the backlight iron frame.
[0020] Further, when the thickness dimension of the protrusion is less than the thickness dimension of the light guide plate, the connection between the side of the protrusion facing away from the bottom of the backlight iron frame and the light guide plate is a rounded corner.
[0021] Further, a reflective sheet is also provided between the bottom of the light guide plate and the backlight iron frame.
[0022] To achieve the above object, an electronic device provided in this application includes: the above backlight module.
[0023] The backlight module according to the embodiment of this application includes: a backlight iron frame, a light guide plate is provided at the bottom of the backlight iron frame; on the inner side surface of the backlight iron frame, a groove is provided corresponding to the position of the light guide plate; a protrusion is provided on the inner side surface of the light guide plate facing the backlight iron frame; the protrusion matches the groove; the protrusion is placed in the groove; the protrusion and the groove are matched to limit the movement of the light guide plate in the direction away from the bottom of the backlight iron frame. By placing the protrusion in the groove, the movement of the light guide plate in the direction away from the bottom of the backlight iron frame is restricted, avoiding the occurrence of the phenomenon that the light guide plate detaches from the backlight iron frame; the setting of the rounded corner improves the strength of the protrusion and reduces the risk of the protrusion breaking due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The drawings are used to provide further understanding of this application, and constitute a part of the specification, and together with the embodiments of this application, are used to explain this application, and do not constitute a limitation to this application. In the drawings:
[0025] Figure 1 is a schematic structural diagram of the backlight module according to the embodiment of this application;
[0026] Figure 2 is a schematic structural diagram of the backlight module according to another embodiment of this application;
[0027] Figure 3 is a top view of the light guide plate according to the embodiment of this application.
[0028] Description of the reference numerals:
[0029] 101 - Backlight iron frame; 102 - Groove; 103 - Protrusion; 104 - Reflective sheet; 105 - Light guide plate; 106 - Arc angle. Detailed implementation manners
[0030] Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not used to limit the protection scope of the present application.
[0031] It should be understood that the various steps recited in the method embodiments of the present application can be executed in different orders and / or executed in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this regard.
[0032] The term "including" and its variations used herein are open-ended, that is, "including but not limited to". The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.
[0033] It should be noted that the modifications of "one" and "multiple" mentioned in the present application are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly stated in the context, it should be understood as "one or more". "Multiple" should be understood as two or more.
[0034] The backlight module of the embodiment of the present application includes:
[0035] A backlight iron frame, and a light guide plate is provided at the bottom of the backlight iron frame;
[0036] On the inner side surface of the backlight iron frame, a groove is provided corresponding to the position of the light guide plate;
[0037] The inner side surface of the light guide plate facing the backlight iron frame is provided with a protrusion;
[0038] The protrusion matches the groove;
[0039] The protrusion is placed in the groove;
[0040] The matching of the protrusion and the groove is used to limit the movement of the light guide plate in the direction away from the bottom of the backlight iron frame.
[0041] Embodiment 1
[0042] Figure 1 It is a schematic structural diagram of a backlight module according to an embodiment of the present application. Figure 2 It is a schematic structural diagram of a backlight module according to another embodiment of the present application. Figure 3 It is a top view of a light guide plate according to an embodiment of the present application. Next, in conjunction with Figures 1 - 3 , the structure of the backlight module according to the embodiment of the present application will be described in detail.
[0043] In some exemplary embodiments, the backlight module according to the embodiment of the present application includes: a backlight iron frame 101.
[0044] In some exemplary embodiments, a reflective sheet 104 is provided at the bottom of the backlight iron frame 101.
[0045] In some exemplary embodiments, the reflective sheet 104 is fixed to the bottom of the backlight iron frame 101 by the adhesive of the reflective sheet 104, as shown in Figure 1 and Figure 2 .
[0046] In some exemplary embodiments, a light guide plate 105 is provided on the side of the reflective sheet 104 facing away from the bottom of the backlight iron frame 101.
[0047] In some exemplary embodiments, as needed, the light guide plate 105 and the reflective sheet 104 are connected by the adhesive of the reflective sheet 104; the adhesive of the reflective sheet 104 is, for example, provided between the light guide plate 105 and the reflective sheet 104, and the adhesive of the reflective sheet 104 is provided at a position close to the side of the backlight iron frame 101, that is, the adhesive of the reflective sheet 104 is not fully covered between the light guide plate 105 and the reflective sheet 104.
[0048] In some exemplary embodiments, the light guide plate 105 is provided on the side of the reflective sheet 104 facing away from the bottom of the backlight iron frame 101.
[0049] In some exemplary embodiments, the light guide plate is made of optical grade acrylic / PC sheet, and then a high-tech material with extremely high refractive index and non-light-absorbing is used to print light guide points on the bottom surface of the optical grade acrylic sheet by laser engraving, V-shaped cross-grid engraving, and UV screen printing techniques; the optical grade acrylic sheet is used to absorb the light emitted from the light-emitting body and stay on the surface of the optical grade acrylic sheet. When the light hits each light guide point, the reflected light will spread in all directions, and then the reflection condition is destroyed and emitted from the front of the light guide plate 105. Through various light guide points with different densities and sizes, the light guide plate 105 can emit light evenly.
[0050] In some exemplary embodiments, the light guide plate 105 is used to conduct light.
[0051] In some exemplary embodiments, the reflective sheet 104 is used to reflect the light exposed from the bottom surface of the light guide plate 105 back into the light guide plate 105 to improve the light utilization efficiency.
[0052] In some exemplary embodiments, on the inner side surface of the backlight iron frame 101, a groove 102 is provided corresponding to the position of the light guide plate 105; that is, the groove 102 is provided on the inner side of the side of the backlight iron frame 101, and the groove 102 is at the position corresponding to the light guide plate 105 on the side of the backlight iron frame 101.
[0053] In some exemplary embodiments, the light guide plate 105 is provided with a protrusion 103 on the inner side surface facing the backlight iron frame 101, and the protrusion 103 can be understood as an extension of the light guide plate 105 towards the side of the backlight iron frame 101.
[0054] In some exemplary embodiments, the protrusion 103 matches the groove 102.
[0055] In some exemplary embodiments, the protrusion 103 is placed in the groove 102.
[0056] In some exemplary embodiments, the protrusion 103 and the groove 102 are matched to limit the movement of the light guide plate 105 in the direction away from the bottom of the backlight iron frame 101.
[0057] In some exemplary embodiments, there are multiple grooves 102.
[0058] In some exemplary embodiments, there are multiple protrusions 103, such as Figure 3 shown.
[0059] In some exemplary embodiments, the number of protrusions 103 matches the number of grooves 102, for example, the number of protrusions 103 is the same as the number of grooves 102.
[0060] In some exemplary embodiments, the multiple grooves 102 are evenly distributed on the inner side surface of the backlight module.
[0061] In some exemplary embodiments, the spacing between adjacent protrusions 103 on the light guide plate 105 is the same as the spacing between adjacent grooves 102 on the side of the backlight iron frame 101.
[0062] In some exemplary embodiments, the length dimension of the protrusion 103 matches the depth dimension of the groove 102.
[0063] In some exemplary embodiments, the thickness dimension of the protrusion 103 matches the height dimension of the groove 102.
[0064] In some exemplary embodiments, the thickness dimension of the protrusion 103 is not greater than the thickness dimension of the light guide plate 105.
[0065] In some exemplary embodiments, the thickness dimension of the protrusion 103 is equal to the thickness dimension of the light guide plate 105, as Figure 1 shown.
[0066] In some exemplary embodiments, the thickness dimension of the protrusion 103 is less than the thickness dimension of the light guide plate 105, as Figure 2 shown.
[0067] In some exemplary embodiments, when the thickness dimension of the protrusion 103 is less than the thickness dimension of the light guide plate 105, one side of the protrusion 103 facing the bottom of the backlight iron frame 101 is flush with one side of the light guide plate 105 facing the bottom of the backlight iron frame 101.
[0068] In some exemplary embodiments, when the thickness dimension of the protrusion 103 is less than the thickness dimension of the light guide plate 105, the connection between the side of the protrusion 103 facing away from the bottom of the backlight iron frame 101 and the light guide plate 105 is a circular arc angle 106, as Figure 2 shown.
[0069] In some exemplary embodiments, the protrusion 103 is provided. When the light guide plate 105 moves away from the bottom of the backlight iron frame 101, the groove 102 restricts the protrusion 103, thereby restricting the movement range of the light guide plate 105.
[0070] In some exemplary embodiments, the setting of the circular arc angle 106 improves the strength of the protrusion 103 and reduces the risk of the protrusion 103 breaking due to vibration.
[0071] Embodiment 2
[0072] Embodiment 2 is an electronic device, including the backlight module of the above embodiment.
[0073] In some exemplary embodiments, the electronic device of the embodiment of the present application is, for example, a vehicle-mounted electronic device.
[0074] Although the disclosed embodiments of the present utility model are as above, the content is only an embodiment for facilitating the understanding of the present utility model, and is not used to limit the present utility model. Any person skilled in the art within the scope of the present utility model, without departing from the spirit and scope disclosed by the present utility model, can make any modifications and changes in the form and details of the implementation, but the patent protection scope of the present utility model shall still be subject to the scope defined by the appended claims.
Claims
1. A backlight module, characterized in that, Comprising: A backlight iron frame, and a light guide plate is provided at the bottom of the backlight iron frame; On the inner side surface of the backlight iron frame, a groove is provided at a position corresponding to the light guide plate; The light guide plate is provided with a protrusion facing the inner side surface of the backlight iron frame; The protrusion matches the groove; The protrusion is placed in the groove; The protrusion and the groove are matched to limit the movement of the light guide plate in a direction away from the bottom of the backlight iron frame.
2. The backlight module according to claim 1, wherein A plurality of the grooves are provided; A plurality of the protrusions are provided; The number of the protrusions matches the number of the grooves.
3. The backlight module according to claim 2, wherein The plurality of grooves are distributed at equal intervals on the inner side surface of the backlight module.
4. The backlight module according to claim 3, characterized in that, The length dimension of the protrusion matches the depth dimension of the groove.
5. The backlight module according to claim 4, wherein The thickness dimension of the protrusion matches the height dimension of the groove.
6. The backlight module according to claim 5, wherein The thickness dimension of the protrusion is not greater than the thickness dimension of the light guide plate.
7. The backlight module according to claim 6, wherein When the thickness dimension of the protrusion is less than the thickness dimension of the light guide plate, one side of the protrusion facing the bottom of the backlight iron frame is flush with one side of the light guide plate facing the bottom of the backlight iron frame.
8. The backlight module according to claim 7, wherein When the thickness dimension of the protrusion is less than the thickness dimension of the light guide plate, the connection between the side of the protrusion facing away from the bottom of the backlight iron frame and the light guide plate is an arc angle.
9. The backlight module according to claim 8, wherein A reflective sheet is further provided between the light guide plate and the bottom of the backlight iron frame.
10. An electronic device, characterized in that, Comprising the backlight module according to any one of claims 1-9.