Backlight module and electronic equipment

Abstract

The utility model discloses a backlight module and electronic equipment wherein the backlight module comprises: an iron frame, the bottom of which is provided with a light guide plate; a gap is formed between the light guide plate and the side edge of the iron frame; a backlight FPC is arranged in the gap; the projection of the backlight FPC on the side edge of the iron frame is overlapped with the projection of the light guide plate on the side edge of the iron frame; an FPC space limiting part is arranged in the gap; the FPC space limiting part is used for limiting extrusion of the light guide plate on the backlight FPC. The FPC space limiting part is arranged in the gap between the light guide plate and the side edge of the iron frame, extrusion of the light guide plate on the backlight FPC is limited, and the phenomenon that the backlight FPC is damaged due to the fact that the light guide plate impacts and extrudes the backlight FPC is avoided.

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 module, it is usually necessary to lead out the backlight FPC from the side. However, there is a light guide plate corresponding to the position where the backlight is led out. Since the light guide plate is made of a hard material and the edge of the light guide plate is a right-angle edge, while the FPC is a flexible material, during transportation or vibration testing, the backlight FPC is prone to being damaged by the impact of the light guide plate, resulting in a short circuit of the backlight FPC, thereby affecting the product quality.

[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 solve at least the above technical problems, the purpose of the utility model is to provide a backlight module, in which an FPC space limiting part is arranged in the gap between the side of the light guide plate and the iron frame, so as to limit the extrusion of the backlight FPC by the light guide plate.

[0005] In order to achieve the above purpose, the backlight module provided by this application includes:

[0006] An iron frame, with a light guide plate provided at the bottom of the iron frame;

[0007] There is a gap between the side of the light guide plate and the iron frame;

[0008] A backlight FPC is arranged in the gap;

[0009] The projection of the backlight FPC on the side of the iron frame overlaps with the projection of the light guide plate on the side of the iron frame;

[0010] An FPC space limiting part is arranged in the gap;

[0011] The FPC space limiting part is used to limit the extrusion of the backlight FPC by the light guide plate.

[0012] Further, the FPC space limiting part includes:

[0013] A protruding part is arranged on the side of the light guide plate facing the iron frame;

[0014] The projection of the protruding part on the iron frame does not coincide with the backlight FPC.

[0015] Further, the length dimension of the protruding part is greater than the thickness dimension of the backlight FPC.

[0016] Further, the FPC space limiting part includes:

[0017] A cushion strip is arranged in the gap;

[0018] The thickness dimension of the spacer is greater than the thickness dimension of the backlight FPC.

[0019] The spacer is disposed on the side of the backlight FPC.

[0020] Further, the spacer is a gasket strip.

[0021] The gasket strip has shrinkage elasticity.

[0022] The thickness dimension of the gasket strip after shrinkage is greater than the thickness dimension of the backlight FPC.

[0023] Further, the FPC space limiting portion includes:

[0024] A groove is provided at a position corresponding to the backlight FPC on the side of the iron frame.

[0025] The depth dimension of the groove is greater than the thickness dimension of the backlight FPC.

[0026] The width dimension of the groove is smaller than the width dimension of the light guide plate.

[0027] Further, the width dimension of the groove is greater than the width dimension of the backlight FPC.

[0028] Further, a reflective sheet is provided between the bottom of the light guide plate and the iron frame.

[0029] Further, a film material is further provided on a side of the light guide plate facing away from the reflective sheet.

[0030] The film material includes a brightness enhancement film.

[0031] To achieve the above object, the electronic device provided by the present application includes: the above-mentioned backlight module.

[0032] The backlight module according to the embodiment of the present application includes: an iron frame, a light guide plate is provided at the bottom of the iron frame; a gap is provided between the light guide plate and the side of the iron frame; a backlight FPC is provided in the gap; the projection of the backlight FPC on the side of the iron frame overlaps with the projection of the light guide plate on the side of the iron frame; an FPC space limiting portion is provided in the gap; the FPC space limiting portion is used to limit the extrusion of the light guide plate on the backlight FPC. By providing the FPC space limiting portion in the gap between the light guide plate and the side of the iron frame, the extrusion of the light guide plate on the backlight FPC is limited, avoiding the occurrence of the phenomenon that the backlight FPC is damaged due to the impact and extrusion of the light guide plate; the service life of the product is extended and the product quality is improved. Description of the Drawings

[0033] The drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and together with the embodiments of the present application, are used to explain the present application, and do not constitute a limitation to the present application. In the drawings:

[0034] Figure 1 It is a schematic structural diagram of a backlight module according to an embodiment of the present application;

[0035] Figure 2 It is a schematic structural diagram of a backlight module according to another embodiment of the present application;

[0036] Figure 3 It is a schematic structural diagram of a backlight module according to still another embodiment of the present application.

[0037] Explanation of reference numerals:

[0038] 101 - Glue frame; 102 - Iron frame; 103 - Protrusion; 104 - Backlight FPC; 105 - Light guide plate; 106 - Pad strip; 107 - Groove; 108 - Reflective sheet; 109 - Film material. Detailed implementation manners

[0039] Hereinafter, embodiments of the present application will be described in more detail 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.

[0040] 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.

[0041] As used herein, the term "including" and its variants 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.

[0042] 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.

[0043] The backlight module of the embodiment of the present application includes:

[0044] An iron frame, and a light guide plate is provided at the bottom of the iron frame;

[0045] A gap is provided between the side of the light guide plate and the iron frame;

[0046] A backlight FPC is provided inside the gap;

[0047] The projection of the backlight FPC on the side of the iron frame overlaps with the projection of the light guide plate on the side of the iron frame;

[0048] An FPC space limiting part is provided inside the gap;

[0049] The FPC space limiting part is used to limit the extrusion of the light guide plate on the backlight FPC.

[0050] Embodiment 1

[0051] Figure 1 It is a schematic structural diagram of the backlight module according to an embodiment of the present application, Figure 2 It is a schematic structural diagram of the backlight module according to another embodiment of the present application, Figure 3 It is a schematic structural diagram of the backlight module according to still another embodiment of the present application. Next, the structural diagram of the backlight module according to the embodiments of the present application will be described in detail in conjunction with Figures 1 - 3 to describe the structural diagram of the backlight module according to the embodiments of the present application in detail.

[0052] In some exemplary embodiments, the backlight module according to the embodiments of the present application includes: an iron frame 102.

[0053] In some exemplary embodiments, the iron frame 102 is the backlight iron frame.

[0054] In some exemplary embodiments, a reflector 108 is provided at the bottom of the iron frame 102.

[0055] In some exemplary embodiments, a light guide plate 105 is provided on one side of the reflector 108 facing away from the bottom of the iron frame 102.

[0056] In some exemplary embodiments, the light guide plate 105 (light guide plate) is made of optical-grade acrylic / PC sheet material, and then a high-tech material with a very high refractive index and no light absorption is used. Light guide points are printed 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 diffuse 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.

[0057] In some exemplary embodiments, the light guide plate 105 is used to conduct light.

[0058] In some exemplary embodiments, the reflector 108 is used to reflect the light exposed on the bottom surface of the light guide plate 105 back into the light guide plate 105 to improve the light use efficiency.

[0059] In some exemplary embodiments, there is a gap between the light guide plate 105 and the side of the iron frame 102.

[0060] In some exemplary embodiments, a backlight FPC 104 is provided in the gap.

[0061] In some exemplary embodiments, the projection of the backlight FPC 104 on the side of the iron frame 102 overlaps with the projection of the light guide plate 105 on the side of the iron frame 102. That is, when the light guide plate 105 moves towards the backlight FPC 104, there is a risk that the light guide plate 105 squeezes the backlight FPC 104.

[0062] In some exemplary embodiments, an FPC space defining portion is provided in the gap.

[0063] In some exemplary embodiments, the FPC space defining portion is used to limit the squeezing of the backlight FPC 104 by the light guide plate 105.

[0064] In some exemplary embodiments, the FPC space defining portion includes: a protruding portion 103 is provided on the side of the light guide plate 105 facing the iron frame 102, as Figure 1 shown.

[0065] In some exemplary embodiments, the projection of the protruding portion 103 on the iron frame 102 does not coincide with the backlight FPC 104, that is, the protruding portion 103 is provided on the side of the backlight FPC 104.

[0066] In some exemplary embodiments, the protruding portion 103 can be one or more. For example, protruding portions 103 are provided on both sides of the backlight FPC 104.

[0067] In some exemplary embodiments, the length dimension of the protruding portion 103 is greater than the thickness dimension of the backlight FPC 104, that is, the protruding distance dimension of the protruding portion 103 is greater than the thickness dimension of the backlight FPC 104; this design makes it so that when the light guide plate 105 moves towards the backlight FPC 104, due to the design of the protruding portion 103, the protruding portion 103 contacts the side of the iron frame 102, thereby providing a space gap for the backlight FPC 104.

[0068] In some exemplary embodiments, the FPC space defining portion includes: a cushion strip 106 is provided in the gap, that is, a spacer is provided in the gap space, as Figure 2 shown.

[0069] In some exemplary embodiments, the thickness dimension of the cushion strip 106 is greater than the thickness dimension of the backlight FPC 104.

[0070] In some exemplary embodiments, the spacer strip 106 is disposed on the side of the backlight FPC 104.

[0071] In some exemplary embodiments, when the light guide plate 105 moves towards the backlight FPC 104, the setting of the spacer strip 106 restricts the movement of the light guide plate 105 due to the blocking of the spacer strip 106, thereby avoiding the extrusion of the backlight FPC 104 by the light guide plate 105.

[0072] In some exemplary embodiments, the spacer strip 106 is a rubber strip.

[0073] In some exemplary embodiments, the rubber strip has shrinkage elasticity.

[0074] In some exemplary embodiments, the thickness dimension of the rubber strip after shrinkage is greater than the thickness dimension of the backlight FPC 104.

[0075] In some exemplary embodiments, the shrinkage elasticity of the rubber strip can better protect the backlight FPC 104 from being impacted and extruded by the light guide plate 105.

[0076] In some exemplary embodiments, the FPC space defining portion includes: a groove 107 is provided at a position corresponding to the backlight FPC 104 on the side of the iron frame 102, as Figure 3 shown.

[0077] In some exemplary embodiments, the depth dimension of the groove 107 is greater than the thickness dimension of the backlight FPC 104.

[0078] In some exemplary embodiments, the width dimension of the groove 107 is smaller than the width dimension of the light guide plate 105.

[0079] In some exemplary embodiments, the backlight FPC 104 is disposed in the groove 107.

[0080] In some exemplary embodiments, the width dimension of the groove 107 is greater than the width dimension of the backlight FPC 104.

[0081] In some exemplary embodiments, by disposing the backlight FPC 104 in the groove 107, even when the light guide plate 105 impacts the side of the iron frame 102, the backlight FPC 104 will not be impacted.

[0082] In some exemplary embodiments, a light emitting body, such as an LED lamp, is provided on the side of the backlight FPC 104 facing the light guide plate 105 as needed.

[0083] In some exemplary embodiments, a film material 109, such as a brightness enhancement film, is further provided on the side of the light guide plate 105 facing away from the reflector 108.

[0084] In some exemplary embodiments, the brightness enhancement film includes an upper brightness enhancement film and a lower brightness enhancement film.

[0085] In some exemplary embodiments, the lower brightness enhancement film is disposed between the upper brightness enhancement film and the light guide plate 105.

[0086] In some exemplary embodiments, a rubber frame 101 is optionally further provided outside the side of the iron frame 102.

[0087] Embodiment 2

[0088] Embodiment 2 is an electronic device including the backlight module of the above embodiment.

[0089] In some exemplary embodiments, the electronic device of the embodiment of the present application is, for example, an in-vehicle electronic device.

[0090] Although the disclosed embodiments of the present utility model are as above, the content is only an embodiment adopted 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 can make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed by the present utility model. However, the scope of patent protection 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: An iron frame, with a light guide plate provided at the bottom of the iron frame; A gap is provided between the light guide plate and the side of the iron frame; A backlight FPC is provided in the gap; The projection of the backlight FPC on the side of the iron frame overlaps with the projection of the light guide plate on the side of the iron frame; An FPC space limiting part is provided in the gap; The FPC space limiting part is used to limit the extrusion of the light guide plate on the backlight FPC.

2. The backlight module according to claim 1, wherein The FPC space limiting part includes: A protruding part is provided on the side of the light guide plate facing the iron frame; The projection of the protruding part on the iron frame does not coincide with the backlight FPC.

3. The backlight module according to claim 2, wherein The length dimension of the protruding part is greater than the thickness dimension of the backlight FPC.

4. The backlight module according to claim 1, wherein The FPC space limiting part includes: A cushion strip is provided in the gap; The thickness dimension of the cushion strip is greater than the thickness dimension of the backlight FPC; The cushion strip is provided on the side of the backlight FPC.

5. The backlight module according to claim 4, wherein, The cushion strip is a cushion rubber strip; The cushion rubber strip has shrinkage elasticity; The thickness dimension of the cushion rubber strip after shrinkage is greater than the thickness dimension of the backlight FPC.

6. The backlight module according to claim 1, wherein, The FPC space limiting part includes: A groove is provided at the side of the iron frame corresponding to the position of the backlight FPC; The depth dimension of the groove is greater than the thickness dimension of the backlight FPC; The width dimension of the groove is smaller than the width dimension of the light guide plate.

7. The backlight module according to claim 6, wherein The width dimension of the groove is greater than the width dimension of the backlight FPC.

8. The backlight module according to claim 1, wherein A reflective sheet is provided between the light guide plate and the bottom of the iron frame.

9. The backlight module according to claim 8, wherein A film material is further provided on the side of the light guide plate facing away from the reflective sheet; The film material includes a brightness enhancement film.

10. An electronic device, characterized in that, Comprising the backlight module according to any one of claims 1-9.

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