Backlight module capable of preventing microstructure of light guide plate from being damaged

Abstract

The utility model discloses a backlight module capable of preventing a light guide plate microstructure from being damaged, which comprises a lower frame, a reflector plate, a light guide plate, a silica gel pad, an FPC (Flexible Printed Circuit) and an LED (Light Emitting Diode) lamp, and is characterized in that the lower frame comprises a bottom plate and a side wall extending upwards from the bottom plate; the reflector plate is fixed on the upper surface of the bottom plate; the light guide plate is arranged above the reflector plate; the silica gel pad is arranged between the light guide plate and the reflector plate and located on the edge of the light guide plate. The FPC is arranged on the inner side of the side wall; and the LED lamp is fixed on the FPC. Because the silica gel pad is arranged between the light guide plate and the reflector plate, the height of the light guide plate is increased through the silica gel pad, so that the light guide plate is prevented from being in direct contact with the reflector plate, even if the liquid crystal display module shakes, the light guide plate and the reflector plate are not rubbed, the microstructure of the light guide plate is protected from being damaged, and the service life of the liquid crystal display module is prolonged. Display abnormity is avoided, and the competitiveness of the product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a backlight module which can avoid damage to the microstructure of a light guide plate. Background Art

[0002] In a liquid crystal display module, the light guide plate and the reflective sheet are generally placed in direct contact. When the liquid crystal display module vibrates, the light guide plate will shake, and the reflective sheet is fixed on the lower frame, causing the light guide plate and the reflective sheet to rub back and forth. Since the surface of the light guide plate usually has microstructures, such as a microlens array, a light column array, or a structure engraved with tiny bumps and depressions, long-term friction will damage these microstructures of the light guide plate, resulting in display abnormalities and reducing the competitiveness of the product. Utility Model Content

[0003] The technical problem to be solved by the utility model is how to protect the microstructure of the light guide plate from damage, avoid display abnormality, and improve the competitiveness of the product.

[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 a backlight module that avoids damage to the microstructure of the light guide plate, which includes a lower frame, a reflective sheet, a light guide plate, a silicone pad, an FPC and an LED lamp, the lower frame includes a bottom plate and a side wall extending upward from the bottom plate; the reflective sheet is fixed on the upper surface of the bottom plate; the light guide plate is arranged above the reflective sheet; the silicone pad is arranged between the light guide plate and the reflective sheet and is located at the edge of the light guide plate; the FPC is arranged on the inner side of the side wall; the LED lamp is fixed on the FPC.

[0006] As a preferred implementation of the backlight module for avoiding damage to the light guide plate microstructure provided by the utility model, the color of the silicone pad is transparent.

[0007] As a preferred implementation of the backlight module for avoiding damage to the light guide plate microstructure provided by the utility model, a double-sided adhesive is arranged between the silicone pad and the bottom plate.

[0008] As a preferred implementation of the backlight module for avoiding damage to the light guide plate microstructure provided by the utility model, the color of the double-sided adhesive is transparent.

[0009] As a preferred embodiment of the backlight module for avoiding damage to the microstructure of the light guide plate provided by the utility model, the silicone pad includes a bearing portion and a limiting portion arranged above the bearing portion, the limiting portion is shorter than the bearing portion and forms a step, and the light guide plate is arranged on the bearing portion located at the step.

[0010] As a preferred implementation of the backlight module for avoiding damage to the microstructure of the light guide plate provided by the utility model, the edges of the bearing portion and the limiting portion are both provided with chamfers.

[0011] As a preferred implementation of the backlight module for avoiding damage to the light guide plate microstructure provided by the utility model, the chamfer is a right angle or a rounded angle.

[0012] As a preferred implementation of the backlight module for avoiding damage to the light guide plate microstructure provided by the utility model, at least two cutting grooves are provided on the bottom plate, and reinforcing ribs are formed on the residual material of the bottom plate between adjacent cutting grooves.

[0013] As a preferred implementation of the backlight module for avoiding damage to the light guide plate microstructure provided by the utility model, the shape of the material groove is polygonal.

[0014] As a preferred implementation of the backlight module for avoiding damage to the microstructure of the light guide plate provided by the utility model, the shape of the material cutting groove is hexagonal.

[0015] The utility model has the following beneficial effects:

[0016] Since the silicone pad is arranged between the light guide plate and the reflective sheet, it is equivalent to raising the height of the light guide plate through the silicone pad, thereby avoiding direct contact between the light guide plate and the reflective sheet. In this way, even if the liquid crystal display module shakes, there will be no friction between the light guide plate and the reflective sheet, thereby protecting the microstructure of the light guide plate from damage, avoiding display abnormalities, and improving the competitiveness of the product. 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 A schematic structural diagram of a backlight module for preventing microstructure damage of a light guide plate provided by the utility model.

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the silicone pad.

[0021] Figure 4 Schematic diagram of the improved structure of the lower frame.

[0022] Figure 5 This is a top view of the lower frame.

[0023] Description of Figure Numbers:

[0024] Lower frame 1; reflector 2; light guide plate 3; silicone pad 4; FPC 5; LED lamp 6; bottom plate 11; side wall 12;

[0025] Double-sided adhesive 7; bearing portion 41; limiting portion 42;

[0026] Cutting groove 13; reinforcing rib 14. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] The utility model provides a backlight module for avoiding damage to the microstructure of a light guide plate, which comprises a lower frame, a reflective sheet, a light guide plate, a silicone pad, an FPC and an LED lamp, wherein the lower frame comprises a bottom plate and a side wall extending upward from the bottom plate; the reflective sheet is fixed on the upper surface of the bottom plate; the light guide plate is arranged above the reflective sheet; the silicone pad is arranged between the light guide plate and the reflective sheet and is located at the edge of the light guide plate; the FPC is arranged on the inner side of the side wall; and the LED lamp is fixed on the FPC.

[0031] Since the silicone pad is arranged between the light guide plate and the reflective sheet, it is equivalent to raising the height of the light guide plate through the silicone pad, thereby avoiding direct contact between the light guide plate and the reflective sheet. In this way, even if the liquid crystal display module shakes, there will be no friction between the light guide plate and the reflective sheet, thereby protecting the microstructure of the light guide plate from damage, avoiding display abnormalities, and improving the competitiveness of the product.

[0032] 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.

[0033] See also Figures 1 to 3 , a backlight module for preventing the microstructure of the light guide plate 3 from being damaged is provided by the utility model, and the backlight module comprises a lower frame 1, a reflective sheet 2, a light guide plate 3, a silicone pad 4, an FPC 5 and an LED lamp 6, wherein the lower frame 1 comprises a bottom plate 11 and a side wall 12 extending upward from the bottom plate 11; the reflective sheet 2 is fixed on the upper surface of the bottom plate 11; the light guide plate 3 is arranged above the reflective sheet 2; the silicone pad 4 is arranged between the light guide plate 3 and the reflective sheet 2 and is located at the edge of the light guide plate 3, that is, the light guide plate 3 is padded by the silicone pad 4; the FPC 5 is arranged on the inner side of the side wall 12; and the LED lamp 6 is fixed on the FPC 5. Since the silicone pad 4 is arranged between the light guide plate 3 and the reflective sheet 2, it is equivalent to padded the height of the light guide plate 3 by the silicone pad 4, thereby preventing the light guide plate 3 from directly contacting the reflective sheet 2, so that even if the liquid crystal display module shakes, the light guide plate 3 and the reflective sheet 2 will not rub against each other, thereby protecting the microstructure of the light guide plate 3 from being damaged, avoiding display abnormality, and improving the competitiveness of the product.

[0034] Furthermore, the color of the silicone pad 4 is transparent, so that light can pass through the silicone pad 4 and be reflected back by the reflective sheet 2 .

[0035] Furthermore, a double-sided adhesive 7 is provided between the silicone pad 4 and the bottom plate 11 so that the silicone pad 4 can be fixed on the bottom plate 11 .

[0036] Furthermore, the double-sided adhesive 7 is transparent so that light can pass through the double-sided adhesive 7 and be reflected back by the reflective sheet 2 .

[0037] Furthermore, the silicone pad 4 includes a bearing portion 41 and a limiting portion 42 arranged above the bearing portion 41, the limiting portion 42 is shorter than the bearing portion 41 and forms a step, and the light guide plate 3 is arranged on the bearing portion 41 located at the step, that is, the shape of the silicone pad 4 is L-shaped, the bearing portion 41 is used to support the light guide plate 3, and the limiting portion 42 is used to limit the light guide plate 3.

[0038] Furthermore, the edges of the bearing portion 41 and the limiting portion 42 are both provided with chamfers. More preferably, the chamfers are chamfered right angles or rounded corners to prevent the sharp corners of the silicone pad 4 from damaging the light guide plate 3 .

[0039] See also Figure 4 and Figure 5 As a further optimization scheme of Example 1, in this embodiment, at least two cutting grooves 13 are provided on the bottom plate 11, and the excess material of the bottom plate 11 between adjacent cutting grooves 13 forms reinforcing ribs 14, which can not only prevent injection molding shrinkage and reduce material, but also enhance the strength of the lower frame 1.

[0040] Furthermore, the shape of the material cutting groove 13 is a polygon, and more preferably, the shape of the material cutting groove 13 is a regular hexagon, which has better strength than the conventional rectangular lower frame 1.

[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. A backlight module for preventing damage to the microstructure of a light guide plate, characterized in that: It includes: A lower frame, comprising a bottom plate and side walls extending upward from the bottom plate; A reflective sheet fixed on the upper surface of the bottom plate; A light guide plate, which is arranged above the reflective sheet; A silicone pad, which is disposed between the light guide plate and the reflective sheet and is located at an edge of the light guide plate; An FPC disposed on the inner side of the side wall; The LED lamp is fixed on the FPC.

2. The backlight module for preventing the microstructure of the light guide plate from being damaged according to claim 1, characterized in that: The color of the silicone pad is transparent.

3. The backlight module for preventing the light guide plate microstructure from being damaged according to claim 1, characterized in that: A double-sided adhesive is arranged between the silicone pad and the bottom plate.

4. The backlight module for preventing the microstructure of the light guide plate from being damaged according to claim 3, characterized in that: The color of the double-sided adhesive is transparent.

5. The backlight module for preventing microstructure damage of a light guide plate according to claim 1, characterized in that: The silicone pad includes a bearing portion and a limiting portion arranged above the bearing portion, the limiting portion is shorter than the bearing portion and forms a step, and the light guide plate is arranged on the bearing portion located at the step.

6. The backlight module for preventing the microstructure of the light guide plate from being damaged according to claim 5, characterized in that: The edges of the bearing portion and the limiting portion are both provided with chamfers.

7. The backlight module for preventing the microstructure of the light guide plate from being damaged according to claim 6, characterized in that: The chamfer is a right angle or a rounded angle.

8. The backlight module for preventing microstructure damage of a light guide plate according to claim 1, characterized in that: At least two cutting grooves are arranged on the bottom plate, and the residual material of the bottom plate between adjacent cutting grooves forms reinforcing ribs.

9. The backlight module for preventing the microstructure of the light guide plate from being damaged according to claim 8, characterized in that: The shape of the cutting groove is polygonal.

10. The backlight module for preventing the microstructure of the light guide plate from being damaged according to claim 9, characterized in that: The shape of the cutting slot is hexagonal.

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