Anti-oscillation backlight module
By setting up a boss on the lower frame of the backlight module, the light guide plate is suspended above the reflector sheet, the problem of friction between the light guide plate and the reflector sheet in the oscillating environment of the traditional backlight module is solved, the microstructure of the light guide plate is protected, normal display is ensured and product competitiveness is improved.
Patent Information
- Application Number
- CN202421398831.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The reflector in the traditional backlight module is in direct contact with the light guide plate, which is easy to rub in the oscillating environment, resulting in the microstructure on the lower surface of the light guide plate being destroyed, resulting in abnormal display and reducing the competitiveness of the product.
An anti-vibration backlight module is designed. By providing a first boss and a second boss on the lower frame, the light guide plate is suspended above the reflector through these bosses, forming a certain gap to avoid direct contact, thereby preventing friction during vibration.
It effectively protects the microstructure on the lower surface of the light guide plate, prevents damage, ensures normal display, improves the competitiveness of the product, and plays a limiting role when attaching FPC, and improves the yield of goods.
Smart Images
Figure CN222784738U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to an anti-vibration backlight module. Background Art
[0002] The reflective sheet and light guide plate in a traditional backlight module are generally in direct contact. Some backlight modules that are often used in a vibrating environment will repeatedly rub against the reflective sheet and the light guide plate when subjected to vibration, causing the microstructure on the lower surface of the light guide plate to be damaged, thereby causing display abnormalities and reducing the competitiveness of the product. Utility Model Content
[0003] The technical problem to be solved by the utility model is to avoid the friction between the reflective sheet and the light guide plate, thereby protecting the microstructure on the lower surface of the light guide plate from being damaged, ensuring normal display and improving the competitiveness of the product.
[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:
[0005] To solve the above technical problems, the utility model provides an anti-shock backlight module, which includes a lower frame, a reflective sheet, an FPC, an LED lamp and a light guide plate, the lower frame includes a bottom plate and a side wall extending upward from the edge of the bottom plate, the side wall extending inward to form a first boss and a second boss, the first boss is arranged below the second boss; the reflective sheet is arranged on the upper surface of the bottom plate; the FPC is arranged on the side wall and between the first boss and the second boss; the LED lamp is arranged on the FPC; a supporting groove is provided on the lower surface of the light guide plate facing the side of the LED lamp, the position of the supporting groove corresponds to the position of the first boss, a fixing hole is provided on the side of the light guide plate facing the LED lamp, the position of the fixing hole corresponds to the position of the second boss, and the light guide plate is suspended above the reflective sheet through the first boss and the second boss.
[0006] As a preferred implementation of the anti-oscillation backlight module provided by the utility model, the fixing hole and the second boss are interference fit.
[0007] As a preferred implementation of the anti-oscillation backlight module provided by the utility model, the distance between the lower surface of the light guide plate and the upper surface of the reflective sheet is 0.5 mm.
[0008] As a preferred embodiment of the anti-shock backlight module provided by the utility model, a PCB board is arranged on the lower surface of the base plate, at least one retaining wall is stamped out on the top and bottom of the lower surface of the base plate, the retaining wall is perpendicular to the base plate, at least one twist foot is stamped out on the left and right sides of the lower surface of the base plate, the twist foot is rotatable, and the PCB board is placed in the space defined by the retaining wall and the twist foot.
[0009] As a preferred implementation of the anti-shock backlight module provided by the utility model, the cross-sectional shape of the twist foot is L-shaped, and the twist foot includes a root portion connected to the base plate and a twist portion connected to the root portion.
[0010] As a preferred implementation of the anti-shock backlight module provided by the utility model, the root width of the twist foot is 4mm to 6mm, and the width of the twist part of the twist foot is 4mm to 6mm.
[0011] As a preferred implementation of the anti-shock backlight module provided by the utility model, an inner concave portion is provided at the connection between the root portion and the inner side of the twist portion.
[0012] As a preferred implementation of the anti-shock backlight module provided by the utility model, the inner concave portion has a smooth transition.
[0013] As a preferred implementation of the anti-shock backlight module provided by the utility model, the depth of the inner concave portion is 0.5 mm to 1.0 mm.
[0014] As a preferred implementation of the anti-shock backlight module provided by the utility model, the distance between the deepest point of the inner concave portion and the lower surface of the root portion is 1.5 mm to 2.5 mm.
[0015] The utility model has the following beneficial effects:
[0016] That is, two bosses are made on the lower frame. The first boss and the support groove of the light guide plate are embedded to support the light guide plate on the reflective sheet. The second boss and the fixing hole on the light guide plate cooperate to stabilize the light guide plate so that the light guide plate is suspended above the reflective sheet, so that a certain gap is formed between the light guide plate and the reflective film to avoid direct contact. When the module vibrates, the light guide plate will not rub against the reflective sheet to cause poor display, protecting the microstructure on the lower surface of the light guide plate from damage, ensuring normal display, and improving the competitiveness of the product. The first boss and the second boss can also play the role of FPC limiter, which will not cause deviation when pasting the FPC, and improve the yield rate of goods. 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 present invention is a schematic structural diagram of an anti-vibration backlight module provided by the present invention.
[0019] Figure 2 for Figure 1 Schematic diagram of the improved structure of the lower middle frame.
[0020] Figure 3 for Figure 1 Bottom view of .
[0021] Figure 4 for Figure 3 Schematic diagram of the structure after covering the PCB board.
[0022] Figure 5 for Figure 2 Enlarged view of point A in the middle.
[0023] Description of Figure Numbers:
[0024] Lower frame 1; reflector 2; FPC 3; LED lamp 4; light guide plate 5; bottom plate 11; side wall 12; first boss 13; second boss 14;
[0025] PCB board 6; retaining wall 13; twist foot 14; root 141; twist portion 142; inner recess 143. 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-shock backlight module, which includes a lower frame, a reflective sheet, an FPC, an LED lamp and a light guide plate, the lower frame includes a bottom plate and a side wall extending upward from the edge of the bottom plate, the side wall extends inward to form a first boss and a second boss, the first boss is arranged below the second boss; the reflective sheet is arranged on the upper surface of the bottom plate; the FPC is arranged on the side wall and between the first boss and the second boss; the LED lamp is arranged on the FPC; a supporting groove is provided on the lower surface of the light guide plate facing the side of the LED lamp, the position of the supporting groove corresponds to the position of the first boss, a fixing hole is provided on the side of the light guide plate facing the LED lamp, the position of the fixing hole corresponds to the position of the second boss, and the light guide plate is suspended above the reflective sheet through the first boss and the second boss.
[0030] That is, two bosses are made on the lower frame. The first boss and the support groove of the light guide plate are embedded to support the light guide plate on the reflective sheet. The second boss and the fixing hole on the light guide plate cooperate to stabilize the light guide plate so that the light guide plate is suspended above the reflective sheet, so that a certain gap is formed between the light guide plate and the reflective film to avoid direct contact. When the module vibrates, the light guide plate will not rub against the reflective sheet to cause poor display, protecting the microstructure on the lower surface of the light guide plate from damage, ensuring normal display, and improving the competitiveness of the product. The first boss and the second boss can also play the role of FPC limiter, which will not cause deviation when pasting the FPC, and improve the yield rate of goods.
[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] See also Figure 1 , an anti-shock backlight module provided by the utility model includes a lower frame 1, a reflective sheet 2, an FPC3, an LED lamp 4 and a light guide plate 5, the lower frame 1 includes a bottom plate 11 and a side wall 12 extending upward from the edge of the bottom plate 11, a first boss 13 and a second boss 14 extending inwardly are formed on the side wall 12, and the first boss 13 is arranged below the second boss 14; the reflective sheet 2 is arranged on the upper surface of the bottom plate 11; the FPC3 is arranged on the side wall 12 and is located between the first boss 13 and the second boss 14; the LED lamp 4 is arranged on the FPC3; a supporting groove is provided on the lower surface of the side of the light guide plate 5 facing the LED lamp 4, and the position of the supporting groove corresponds to the position of the first boss 13; a fixing hole is provided on the side of the light guide plate 5 facing the LED lamp 4, and the position of the fixing hole corresponds to the position of the second boss 14, and the light guide plate 5 is suspended above the reflective sheet 2 through the first boss 13 and the second boss 14. That is, two bosses are made on the lower frame 1, the first boss 13 and the support groove of the light guide plate 5 are engaged to support the light guide plate 5 on the reflective sheet 2, the second boss 14 and the fixing hole on the light guide plate 5 cooperate to stabilize the light guide plate 5 so that the light guide plate 5 is suspended above the reflective sheet 2, so that a certain gap is formed between the light guide plate 5 and the reflective sheet 2 to avoid direct contact, and when the module oscillates, the light guide plate 5 will not cause relative friction with the reflective sheet 2 to cause poor display, protecting the microstructure on the lower surface of the light guide plate 5 from damage, ensuring normal display, and improving the competitiveness of the product. The first boss 13 and the second boss 14 can also play the role of limiting the FPC3, and will not cause the phenomenon of biased pasting when pasting the FPC3, thereby improving the yield rate of production.
[0033] Furthermore, the fixing hole and the second boss 14 are interference fit, so as to further stabilize the light guide plate 5 so that the light guide plate 5 is suspended on the reflective sheet 2 .
[0034] Furthermore, the distance between the lower surface of the light guide plate 5 and the upper surface of the reflection sheet 2 is 0.5 mm.
[0035] See also Figures 2 to 5As a further optimization scheme of Example 1, in this embodiment, a PCB board 6 is provided on the lower surface of the base plate 11, and at least one retaining wall 13 is stamped on the top and bottom of the lower surface of the base plate 11, and the retaining wall 13 is perpendicular to the base plate 11. At least one twist foot 14 is stamped on the left and right sides of the lower surface of the base plate 11. In this embodiment, there are four retaining walls 13, and two retaining walls 13 are provided on the top and bottom of the base plate 11. There are four twist feet 14, and two twist feet 14 are provided on the left and right sides of the base plate 11. In other embodiments, the number and position of the twist feet 14 are required to be evenly distributed to achieve the limiting and fixing effects. The twist feet 14 are rotatable, and the PCB board 6 is placed in the space defined by the retaining walls 13 and the twist feet 14. Since retaining walls 13 are stamped on the top and bottom of the lower surface of the base plate 11, and twist feet 14 are stamped on the left and right sides of the lower surface of the base plate 11, the twist feet 14 and retaining walls 13 are set on the lower frame 1 by mold stamping, the retaining walls 13 are used to limit the PCB board 6, and the twist feet 14 are rotated to fix the PCB board 6, so that the assembly reliability of the PCB board 6 can be improved without affecting the cost, and the PCB board 6 can be prevented from falling off.
[0036] Furthermore, in order to enable the twist foot 14 to best match the PCB board 6 and perform twisting and fixing, the cross-sectional shape of the twist foot 14 is L-shaped, and the twist foot 14 includes a root 141 and a twisting portion 142, the root 141 is connected to the base plate 11, and the twisting portion 142 is connected to the root 141.
[0037] Furthermore, the root portion 141 of the twist foot 14 has a width of 4 mm to 6 mm to ensure that the root portion 141 has sufficient strength.
[0038] Furthermore, the width of the twisting portion 142 of the twisting foot 14 is 4 mm to 6 mm to ensure that the twisting foot 14 has enough length to press onto the PCB board 6 after being twisted, and the assembly gap between the twisting portion 142 and the PCB board 6 is 0.3 mm to 0.5 mm.
[0039] Furthermore, an inner concave portion 143 is provided at the connection between the root portion 141 and the inner side of the twist portion 142 , and the inner concave portion 143 has a smooth transition to avoid stress concentration.
[0040] Furthermore, the depth of the inner recess 143 is 0.5mm to 1.0mm, and the distance between the deepest point of the inner recess 143 and the lower surface of the root 141 is 1.5mm to 2.5mm. This is to avoid the problem that the twist foot 14 is too thin and easy to break when twisting. The assembly clearance between the twist foot 14 and the PCB board 6 is 0.3mm to 0.5mm.
[0041] 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.
[0042] 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. An anti-shock backlight module, characterized in that: It includes: A lower frame, comprising a bottom plate and a side wall extending upward from an edge of the bottom plate, wherein a first boss and a second boss are formed on the side wall extending inward, and the first boss is arranged below the second boss; A reflective sheet, which is arranged on the upper surface of the bottom plate; An FPC is disposed on the side wall and is located between the first boss and the second boss; An LED lamp is arranged on the FPC; A light guide plate, a support groove is provided on the lower surface of the side facing the LED lamp, and the position of the support groove corresponds to the position of the first boss. The light guide plate is provided with a fixing hole on the side facing the LED lamp, and the position of the fixing hole corresponds to the position of the second boss. The light guide plate is suspended above the reflective sheet through the first boss and the second boss.
2. The anti-shock backlight module according to claim 1, characterized in that: The fixing hole is interference-fitted with the second boss.
3. The anti-shock backlight module according to claim 1, characterized in that: The distance between the lower surface of the light guide plate and the upper surface of the reflective sheet is 0.5 mm.
4. The anti-shock backlight module according to claim 1, characterized in that: A PCB board is arranged on the lower surface of the base plate, at least one retaining wall is stamped on the top and bottom of the lower surface of the base plate, the retaining wall is perpendicular to the base plate, at least one twist foot is stamped on the left and right sides of the lower surface of the base plate, the twist foot is rotatable, and the PCB board is placed in the space defined by the retaining wall and the twist foot.
5. The anti-shock backlight module according to claim 4, characterized in that: The cross-sectional shape of the twist foot is L-shaped, and the twist foot comprises a root portion connected to the base plate and a twist portion connected to the root portion.
6. The anti-shock backlight module according to claim 5, characterized in that: The root width of the twist foot is 4mm to 6mm, and the width of the twist part of the twist foot is 4mm to 6mm.
7. The anti-shock backlight module according to claim 5, characterized in that: An inner concave portion is provided at the connection between the root portion and the inner side of the twist portion.
8. The anti-shock backlight module according to claim 7, characterized in that: The inner concave portion has a smooth transition.
9. The anti-shock backlight module according to claim 7, characterized in that: The depth of the inner recess is 0.5 mm to 1.0 mm.
10. The anti-shock backlight module according to claim 7, characterized in that: The distance between the deepest point of the inner recess and the lower surface of the root is 1.5 mm to 2.5 mm.