Anti-sound backlight module
By setting through holes and FPC on the frame rubber rack of the backlight module and attaching protective paper to its sides and bottom plate, the problems of looseness and sound of the backlight rubber rack and the rear iron rack are solved, achieving a more stable Assembly and lower product defect rate.
Patent Information
- Application Number
- CN202420275107.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-04
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-02-04
AI Technical Summary
The backlight rubber rack and the rear iron rack are prone to loosening after assembly, resulting in noise, and the gap design is too small, which will lead to difficulty in assembly.
Design a backlight module that is anti-sounding, by providing a through hole and FPC on the side of the frame rubber rack, one end of the FPC extends to the upper surface of the light guide plate and the other end to the lower surface of the bottom plate, and at the FPC and on the side of the rubber rack Attach protective paper to ensure the fixation between the glue rack and the rear iron rack, reducing looseness and noise.
Effectively prevent the backlight module from loosening and sounding, reduce product defect rate, and improve product competitiveness.
Smart Images
Figure CN222189658U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to an anti-noise backlight module. Background Art
[0002] The backlight rubber frame and the backlight rear iron frame are assembled by means of the snap-in position. There is a certain gap between the backlight rubber frame and the backlight rear iron frame, which is generally 0.05-0.1mm. Sometimes due to the structural limitations of the client, the rubber frame needs to be designed to be very thin, and the rubber frame is made of plastic, which is prone to deformation. The backlight rubber frame and the rear iron frame will be loose after assembly, and there will be obvious noise when the handheld module is shaken. Such products with abnormal noise cannot be shipped according to the standard. If the gap between the backlight rubber frame and the rear iron frame is designed to be smaller, it will cause difficulties in assembly. Utility Model Content
[0003] The technical problem to be solved by the utility model is how to reduce the noise caused by the looseness of the backlight rubber frame and the rear iron frame.
[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:
[0005] In order to solve the above technical problems, the utility model provides an anti-noise backlight module, which includes a rear iron frame and a frame-type plastic frame, the frame-type plastic frame is buckled and fixed to the outer side of the rear iron frame, the rear iron frame includes a bottom plate and side walls extending upward from the edge of the bottom plate, the bottom plate is provided with a reflective sheet, a light guide plate and an optical film group, a through hole is opened on the side of the frame-type plastic frame, an FPC is arranged at the through hole, one end of the FPC extends to the upper surface of the light guide plate, and the other end of the FPC extends to the lower surface of the bottom plate, the lower surface of the bottom plate located at the FPC and the side of the frame-type plastic frame are attached with a first protective paper, and at least two of the other three sides of the frame-type plastic frame are provided with a second protective paper, and the second protective paper extends to the lower surface of the bottom plate.
[0006] As a preferred implementation of the anti-noise backlight module provided by the utility model, second protective papers are arranged on the other three sides of the frame-type rubber frame.
[0007] As a preferred implementation of the anti-noise backlight module provided by the utility model, at least one elastic block is provided between the side of the light guide plate away from the light incident side and the side wall.
[0008] As a preferred implementation of the anti-noise backlight module provided by the utility model, at least one protrusion is provided on both sides of the elastic block.
[0009] As a preferred implementation of the anti-noise backlight module provided by the utility model, the elastic block is provided with a shock-absorbing hole between adjacent protrusions.
[0010] As a preferred implementation of the anti-noise backlight module provided by the utility model, grooves are provided on the inner wall of the shock-absorbing hole close to the side of the protrusion, and shock-absorbing devices are provided between adjacent grooves.
[0011] As a preferred implementation of the anti-noise backlight module provided by the utility model, the shock absorbing device is a spring.
[0012] As a preferred implementation of the anti-sounding backlight module provided by the utility model, the shock absorbing device is two magnets with the same poles facing each other.
[0013] As a preferred implementation of the anti-noise backlight module provided by the utility model, the elastic block is interference-fitted with the light guide plate and the side wall.
[0014] As a preferred implementation of the anti-noise backlight module provided by the utility model, the elastic block is a rubber block.
[0015] The utility model has the following beneficial effects:
[0016] Since a first protective paper is provided on the FPC and a second protective paper is provided on the other three sides of the frame-type plastic frame, the sides of the frame-type plastic frame and the lower surface of the bottom plate are adhered and fixed by the first protective paper and the second protective paper to prevent the rear iron frame and the frame-type plastic frame from loosening and making noise, thereby playing a role in preventing noise, reducing product defective rate and improving product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 The utility model provides a cross-sectional structural schematic diagram of an anti-noise backlight module.
[0019] Figure 2 for Figure 1 Side view of.
[0020] Figure 3 for Figure 1 Bottom view of .
[0021] Figure 4 This is a schematic diagram of the structure of Example 2.
[0022] Figure 5 for Figure 4 Schematic diagram of the structure of the elastic block.
[0023] Description of Figure Numbers:
[0024] Rear iron frame 1; frame-type plastic frame 2; bottom plate 11; side wall 12; reflector 3; light guide plate 4; optical film group 5; FPC 6; first protective paper 7; second protective paper 8;
[0025] Elastic block 9; convex block 91; shock absorbing hole 92; groove 93; shock absorbing device 94. DETAILED DESCRIPTION
[0026] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0028] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0029] The utility model provides an anti-noise backlight module, which includes a rear iron frame and a frame-type rubber frame, the frame-type rubber frame is buckled and fixed to the outer side of the rear iron frame, the rear iron frame includes a bottom plate and side walls extending upward from the edge of the bottom plate, the bottom plate is provided with a reflective sheet, a light guide plate and an optical film group, a through hole is opened on the side of the frame-type rubber frame, an FPC is arranged at the through hole, one end of the FPC extends to the upper surface of the light guide plate, the other end of the FPC extends to the lower surface of the bottom plate, the lower surface of the bottom plate located at the FPC and the side of the frame-type rubber frame are attached with a first protective paper, and at least two of the other three sides of the frame-type rubber frame are provided with a second protective paper, and the second protective paper extends to the lower surface of the bottom plate.
[0030] Since a first protective paper is provided on the FPC and a second protective paper is provided on the other three sides of the frame-type plastic frame, the sides of the frame-type plastic frame and the lower surface of the bottom plate are adhered and fixed by the first protective paper and the second protective paper to prevent the rear iron frame and the frame-type plastic frame from loosening and making noise, thereby playing a role in preventing noise, reducing product defective rate and improving product competitiveness.
[0031] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention.
[0032] Example 1
[0033] See also Figures 1 to 3, is a noise-proof backlight module provided by the utility model, which includes a rear iron frame 1 and a frame-type plastic frame 2, the frame-type plastic frame 2 is buckled and fixed on the outer side of the rear iron frame 1, the rear iron frame 1 includes a bottom plate 11 and a side wall 12, the side wall 12 is formed by extending upward from the edge of the bottom plate 11, a reflective sheet 3, a light guide plate 4 and an optical film group 5 are arranged on the bottom plate 11, a through hole is opened on the side of the frame-type plastic frame 2, an FPC 6 is passed through the through hole, one end of the FPC 6 extends to the upper surface of the light guide plate 4, and the other end of the FPC 6 extends to the lower surface of the bottom plate 11, the lower surface of the bottom plate 11 located at the FPC 6 and the side of the frame-type plastic frame 2 are attached with a first protective paper 7, and at least two of the other three sides of the frame-type plastic frame 2 are provided with a second protective paper 8, and the second protective paper 8 extends to the lower surface of the bottom plate 11. Since the first protective paper 7 is provided on the FPC 6 and the second protective paper 8 is provided on the other three sides of the frame-type plastic frame 2, the side edges of the frame-type plastic frame 2 and the lower surface of the bottom plate 11 are adhered and fixed by the first protective paper 7 and the second protective paper 8 to prevent the rear iron frame 1 and the frame-type plastic frame 2 from loosening and making noise, thereby playing a role in preventing noise, reducing product defective rate and improving product competitiveness.
[0034] Furthermore, a second protective paper 8 is provided on the other three sides of the frame-shaped rubber frame 2. More preferably, two pieces of protective paper are provided on each side to improve the anti-sounding effect.
[0035] Example 2
[0036] See also Figure 4 and Figure 5 As a further optimization scheme of Example 1, in this embodiment, at least one elastic block 9 is provided between the side of the light guide plate 4 away from the light incident side and the side wall 12. The elastic block 9 can make the light guide plate 4 firmly abut against the elastic block 9, buffer the impact force of the light guide plate 4 on the rear iron frame 1, avoid the light guide plate 4 colliding with the rear iron frame 1 and causing noise, and also can improve the service life of the light guide plate 4.
[0037] Furthermore, at least one protrusion 91 is provided on both sides of the elastic block 9, and the protrusion 91 directly abuts against the light guide plate 4 and the side wall 12 of the rear iron frame 1, which can align the elastic block 9 with the light guide plate 4 and the side wall 12, further improving the buffering performance of the elastic block 9.
[0038] As the elastic block 9 is used for a longer time, the elasticity of the elastic block 9 will also weaken due to aging. In order to increase the ability of the elastic block 9 to buffer the impact force and increase the service life of the elastic block 9, the elastic block 9 is provided with a shock-absorbing hole 92 between adjacent protrusions 91. In this embodiment, the shock-absorbing hole 92 is a square hole. When the light guide plate 4 hits the elastic block 9, the elastic block 9 will be concave and deformed in the direction of the shock-absorbing hole 92 to absorb the impact force of the light guide plate 4, thereby further achieving the purpose of shock absorption and noise reduction. It should be noted that the shock-absorbing hole 92 can be a through hole or a blind hole, or an inner hole built into the elastic block 9, which is not limited here and falls within the protection scope of the utility model. The present embodiment uses a through hole, which is easy to manufacture and has a low production cost. The shape of the shock-absorbing hole 92 can be a square hole or a round hole, which can be selected according to actual conditions and is not limited here.
[0039] In order to further increase the ability of the elastic block 9 to buffer the impact force, a groove 93 is provided on the inner wall of the shock-absorbing hole 92 close to the side of the protrusion 91. In this embodiment, there are only two protrusions 91, so there are only two grooves 93. It is possible to set multiple protrusions 91 and multiple grooves 93 according to actual conditions. A shock-absorbing device 94 is provided between adjacent grooves 93. The shock-absorbing device 94 can be used to further increase the ability of the elastic block 9 to buffer the impact force and absorb the impact force of the light guide plate 4, thereby further achieving the purpose of shock absorption and noise reduction.
[0040] Furthermore, the shock absorbing device 94 is any one of a spring or two magnets with the same poles facing each other. The elastic force of the spring or the repulsive force generated by the two magnets with the same poles facing each other is used to further increase the ability of the elastic block 9 to buffer the impact force. The spring and magnet are both standard commodities that can be purchased on the market, and no special customization is required. The procurement cost is low and can be replaced at any time, which is cost-effective.
[0041] In order to further reduce the sound generated by the collision between the components, the elastic block 9 is interference fit with the light guide plate 4 and the side wall 12 of the rear iron frame 1. One protrusion 91 of the elastic block 9 abuts on the light guide plate 4, and the other protrusion 91 abuts on the side wall 12. Due to the interference fit, it can be regarded as a whole. When the speed of the external environment changes, the sound of the module can be reduced to a minimum, and the module can be completely prevented from making any sound, achieving zero noise and reducing vibration.
[0042] Furthermore, the elastic block 9 is a rubber block.
[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0044] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. 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 is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.
Claims
1. A noise-proof backlight module, characterized in that: It includes a rear iron frame and a frame-type plastic frame, the frame-type plastic frame is buckled and fixed on the outer side of the rear iron frame, the rear iron frame includes a bottom plate and side walls extending upward from the edge of the bottom plate, the bottom plate is provided with a reflective sheet, a light guide plate and an optical film group, a through hole is opened on the side of the frame-type plastic frame, an FPC is arranged at the through hole, one end of the FPC extends to the upper surface of the light guide plate, the other end of the FPC extends to the lower surface of the bottom plate, the lower surface of the bottom plate located at the FPC and the side of the frame-type plastic frame are attached with a first protective paper, at least two of the other three sides of the frame-type plastic frame are provided with a second protective paper, and the second protective paper extends to the lower surface of the bottom plate.
2. The anti-noise backlight module according to claim 1, characterized in that: The other three sides of the frame-shaped plastic frame are all provided with second protective paper.
3. The anti-noise backlight module according to claim 1, characterized in that: At least one elastic block is disposed between the side of the light guide plate away from the light incident side and the side wall.
4. The anti-noise backlight module according to claim 3, characterized in that: At least one protrusion is disposed on both sides of the elastic block.
5. The anti-noise backlight module according to claim 4, characterized in that: The elastic block is provided with a shock absorbing hole between adjacent protrusions.
6. The anti-noise backlight module according to claim 5, characterized in that: Grooves are arranged on the inner wall of the shock absorbing hole on one side close to the protrusion, and shock absorbing devices are arranged between adjacent grooves.
7. The anti-noise backlight module according to claim 6, characterized in that: The shock absorbing device is a spring.
8. The anti-noise backlight module according to claim 6, characterized in that: The shock absorbing device is two magnets with the same poles facing each other.
9. The anti-noise backlight module according to claim 3, characterized in that: The elastic block is interference-fitted with the light guide plate and the side wall.
10. The anti-noise backlight module according to claim 3, characterized in that: The elastic block is a rubber block.