Backlight module capable of avoiding light leakage
By designing wall -blocking and shading films in the backlight module, the gap between FPC and wall blocks is completely covered, and the problem of light leakage of the backlight module is solved, and the competitiveness and service life of the product are improved.
Patent Information
- Application Number
- CN202421198107.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The backlight leakage occurs in the backlight module, resulting in the terminal return, and the existing technology is difficult to effectively solve this problem.
Design a backlight module structure including bottom plate, reflex sheet, light guide plate, rubber frame, FPC, LED light, wall -blocking, shading foaming and shading sheets. By setting up wall blocks and shading pieces, it completely covers FPC and wall -shielding walls. The gap between the time prevent the light from leaking out.
Effectively avoid the light leakage of the backlight module, and improve the competitiveness and service life of the product.
Smart Images
Figure CN222420754U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to a backlight module for preventing light leakage. Background Art
[0002] Customers reported that the backlight module was leaking backlight, resulting in product returns. Through disassembly and analysis of the backlight module structure, it was found that the FPC was flush with the shading sheet and too close to the glass groove, causing light to leak directly from the edge, which in turn caused backlight leakage and reduced the competitiveness of the product. Utility Model Content
[0003] The technical problem to be solved by the utility model is how to prevent light leakage of the backlight module.
[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 a backlight module for avoiding light leakage, which includes a base plate, a reflective sheet, a light guide plate, a rubber frame, an FPC, an LED lamp, a baffle wall, a shading foam and a shading sheet, wherein the reflective sheet is fixed on the upper surface of the base plate; the light guide plate is arranged above the reflective sheet; the rubber frame is fixed on the upper surface of the base plate, and a boss is arranged on the outer side of the rubber frame; the FPC is fixed on the upper surface of the rubber frame and the light guide plate; the LED lamp is fixed on the lower surface of the FPC and aligned with the light incident side of the light guide plate; the baffle wall is arranged at the edge of the upper surface of the rubber frame, and the FPC is provided with a avoidance portion for avoiding the baffle wall; the shading foam is arranged on the upper surface of the boss of the rubber frame and is located in the non-visible area; the shading sheet is arranged above the shading foam and completely covers the main body of the FPC and partially covers the baffle wall.
[0006] As a preferred embodiment of the backlight module for avoiding light leakage provided by the utility model, the FPC includes a main body, a reinforcement plate and a connector, the reinforcement plate is fixed to the upper surface of the main body, both ends of the reinforcement plate have fixed parts extending outward, the two fixed parts both exceed the edge of the main body, the lower surfaces of the two fixed parts are fixed with first strong magnetic blocks, the connector is arranged below the main body, and two second strong magnetic blocks corresponding to the two first strong magnetic blocks are fixed on the connector.
[0007] As a preferred implementation of the backlight module for avoiding light leakage provided by the utility model, two grooves are provided on the connector, and the two second strong magnetic blocks are respectively fixed in the two grooves.
[0008] As a preferred implementation of the backlight module for avoiding light leakage provided by the utility model, the edge of the groove is provided with a chamfer.
[0009] As a preferred implementation of the backlight module for avoiding light leakage provided by the utility model, the chamfer is a right angle.
[0010] As a preferred implementation of the backlight module for avoiding light leakage provided by the utility model, the chamfer is a rounded corner.
[0011] As a preferred embodiment of the backlight module for avoiding light leakage provided by the utility model, the outer dimensions of the second strong magnetic block are larger than the outer dimensions of the first strong magnetic block, and the outer dimensions of the groove correspond to the outer dimensions of the first strong magnetic block and the second strong magnetic block.
[0012] As a preferred implementation of the backlight module for avoiding light leakage provided by the utility model, the depth of the groove is equal to the sum of the thickness of the first strong magnetic block and the second strong magnetic block.
[0013] As a preferred implementation of the backlight module for avoiding light leakage provided by the utility model, the materials of the first strong magnetic block and the second strong magnetic block are both neodymium iron boron strong magnets.
[0014] As a preferred implementation of the backlight module for avoiding light leakage provided by the utility model, the first strong magnetic block and the second strong magnetic block have different colors.
[0015] The utility model has the following beneficial effects:
[0016] Since a baffle wall is provided on the edge of the upper surface of the rubber frame, and the shading sheet is provided above the shading foam and completely covers the main body of the FPC and partially covers the baffle wall, the gap between the FPC and the baffle wall is completely covered by the shading sheet, thereby preventing light from leaking directly from the edge, thereby preventing backlight leakage 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 The utility model is a schematic structural diagram of a backlight module for preventing light leakage.
[0019] Figure 2 for Figure 1Top view with the blackout foam and blackout sheet hidden.
[0020] Figure 3 for Figure 1 Top view of the .
[0021] Figure 4 for Figure 1 Schematic diagram of the improved structure of FPC.
[0022] Description of Figure Numbers:
[0023] Bottom plate 1; reflector 2; light guide plate 3; plastic frame 4; FPC 5; LED light 6; baffle 7; shading foam 8; shading sheet 9;
[0024] The body 51 ; the reinforcing plate 52 ; the connector 53 ; the fixing portion 54 ; the first strong magnetic block 55 ; the second strong magnetic block 56 ; and the groove 57 . DETAILED DESCRIPTION
[0025] 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.
[0026] 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.
[0027] 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.
[0028] The utility model provides a backlight module for avoiding light leakage, which includes a base plate, a reflective sheet, a light guide plate, a rubber frame, an FPC, an LED lamp, a baffle wall, a shading foam and a shading sheet, wherein the reflective sheet is fixed on the upper surface of the base plate; the light guide plate is arranged above the reflective sheet; the rubber frame is fixed above the base plate, and a boss is arranged on the outer side of the rubber frame; the FPC is fixed on the upper surfaces of the rubber frame and the light guide plate; the LED lamp is fixed on the lower surface of the FPC and is aligned with the light incident side of the light guide plate; the baffle wall is arranged at the edge of the upper surface of the rubber frame, and the FPC is provided with a avoidance portion for avoiding the baffle wall; the shading foam is arranged on the upper surface of the boss of the rubber frame and is located in the non-visible area; the shading sheet is arranged above the shading foam and completely covers the main body of the FPC and partially covers the baffle wall.
[0029] Since a baffle wall is provided on the edge of the upper surface of the rubber frame, and the shading sheet is provided above the shading foam and completely covers the main body of the FPC and partially covers the baffle wall, the gap between the FPC and the baffle wall is completely covered by the shading sheet, thereby preventing light from leaking directly from the edge, thereby preventing backlight leakage and improving the competitiveness of the product.
[0030] 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.
[0031] See also Figures 1 to 3, a backlight module for avoiding light leakage provided by the utility model comprises a bottom plate 1, a reflective sheet 2, a light guide plate 3, a plastic frame 4, an FPC5, an LED lamp 6, a baffle wall 7, a shading foam 8 and a shading sheet 9, wherein the reflective sheet 2 is fixed to the upper surface of the bottom plate 1; the light guide plate 3 is arranged above the reflective sheet 2; the plastic frame 4 is fixed to the upper surface of the bottom plate 1, and a boss is arranged on the outer side of the plastic frame 4; the FPC5 is fixed to the upper surface of the plastic frame 4 and the light guide plate 3; the LED lamp 6 is fixed to the lower surface of the FPC5 and is aligned with the light incident side of the light guide plate 3; the baffle wall 7 is arranged at the edge of the upper surface of the plastic frame 4, and the FPC5 is provided with a avoidance portion for avoiding the baffle wall 7; the shading foam 8 is arranged on the upper surface of the boss of the plastic frame 4 and is located in the non-visible area; the shading sheet 9 is arranged above the shading foam 8 and completely covers the main body of the FPC5 and partially covers the baffle wall 7. Since a baffle 7 is provided at the edge of the upper surface of the rubber frame 4, and the shading sheet 9 is provided above the shading foam 8 and completely covers the main body of the FPC 5 and partially covers the baffle 7, the gap between the FPC 5 and the baffle 7 is completely covered by the shading sheet 9, thereby preventing light from leaking directly from the edge, thereby preventing backlight leakage and improving the competitiveness of the product.
[0032] In this embodiment, the base plate 1 is a PCB board.
[0033] See also Figure 4As a further optimization scheme of Example 1, in this embodiment, the FPC5 includes a body 51, a reinforcement plate 52 and a connector 53. The reinforcement plate 52 is fixed to the upper surface of the body 51. Both ends of the reinforcement plate 52 have fixed parts 54 extending outward. The two fixed parts 54 are beyond the edge of the body 51. The lower surfaces of the two fixed parts 54 are fixed with first strong magnetic blocks 55; the connector 53 is arranged below the body 51, and two second strong magnetic blocks 56 corresponding to the two first strong magnetic blocks 55 are fixed on the connector 53. Since the upper surface of the body 51 is fixed with a reinforcing plate 52, both ends of the reinforcing plate 52 are fixed with first strong magnetic blocks 55, and the connector 53 is fixed with two second strong magnetic blocks 56 corresponding to the two first strong magnetic blocks 55, when the body 51 and the connector 53 are installed, as long as the two ends of the body 51 are close to the connector 53, the first strong magnetic blocks 55 at both ends of the body 51 and the second strong magnetic blocks 56 at both ends of the connector 53 will attract each other and be fixed, and the body 51 and the connector 53 can be automatically aligned and tightly connected. This assembly structure of the FPC5 has few assembly steps, and only needs The assembly can be achieved by bringing the main body 51 and the connector 53 close together, the assembly efficiency of FPC5 can be greatly improved, and the automatic assembly of FPC5 and the connector 53 can be easily realized. The fewer the assembly steps, the lower the probability of defective FPC5 during assembly, thereby avoiding the situation where the products assembled with it cannot work normally due to poor assembly, thereby avoiding abnormal operation of the product, reducing the defective rate of the product, and thus greatly reducing the production and manufacturing costs of FPC5, thereby improving the product competitiveness of FPC5, thereby meeting the company's growing quality requirements.
[0034] Furthermore, two grooves 57 are provided on the connector 53, and two second strong magnetic blocks 56 are respectively fixed in the two grooves 57, so that the fit between the main body 51 and the connector 53 is more compact, and the reliability of assembly is improved, thereby greatly reducing the production and manufacturing costs of FPC5, and further improving the product competitiveness of FPC5, so as to meet the company's growing quality requirements.
[0035] Furthermore, the edge of the groove 57 is provided with a chamfer, and more preferably, the chamfer is a right angle or a rounded angle, so that when the first strong magnetic block 55 is close to the second strong magnetic block 56, it can fall accurately into the groove 57 under the guidance of the chamfer, thereby improving the accuracy and reliability of assembly, thereby greatly reducing the production and manufacturing costs of FPC5, and further improving the product competitiveness of FPC5.
[0036] Furthermore, the outer dimensions of the second strong magnetic block 56 are larger than those of the first strong magnetic block 55, and the outer dimensions of the groove 57 correspond to those of the first strong magnetic block 55 and the second strong magnetic block 56, so that the second strong magnetic block 56 can be firmly fixed in the groove 57. Even if the suction force of the first strong magnetic block 55 is large, the second strong magnetic block 56 will not be sucked out, thereby improving the reliability of assembly, thereby greatly reducing the production and manufacturing costs of FPC5, and further improving the product competitiveness of FPC5, thereby meeting the company's growing quality requirements.
[0037] Furthermore, the depth of the groove 57 is equal to the sum of the thicknesses of the first strong magnetic block 55 and the second strong magnetic block 56, so that the assembly of the body 51 and the connector 53 can be smoothly fitted without leaving any gaps. More preferably, a buffer pad can be provided on the contact surface between the body 51 and the connector 53, and a buffer groove corresponding to the buffer pad is provided on the connector 53, so that the body 51 or the connector 53 can be cushioned during the fitting assembly to avoid damage to the body 51 or the connector 53. More preferably, the buffer pad is a rubber pad, which has good effect, low cost and high cost performance.
[0038] Furthermore, the materials of the first strong magnetic block 55 and the second strong magnetic block 56 are both NdFeB strong magnets, which have mature technology and high cost performance.
[0039] Furthermore, the first strong magnetic block 55 and the second strong magnetic block 56 have different colors so that the staff can distinguish the first strong magnetic block 55 and the second strong magnetic block 56 during installation.
[0040] 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.
[0041] 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 light leakage, characterized in that: It includes: Base plate; A reflective sheet fixed to the upper surface of the bottom plate; A light guide plate, which is arranged above the reflective sheet; A rubber frame, which is fixed on the top of the bottom plate, and a boss is arranged on the outer side of the rubber frame; FPC, which is fixed on the upper surface of the plastic frame and the light guide plate; An LED lamp is fixed on the lower surface of the FPC and is aligned with the light incident side of the light guide plate; A retaining wall is arranged at the edge of the upper surface of the plastic frame, and the FPC is provided with an avoidance portion for avoiding the retaining wall; Light-shielding foam, which is arranged on the upper surface of the boss of the rubber frame and is located in the non-visible area; A shading sheet is arranged above the shading foam and completely covers the main body of the FPC and partially covers the blocking wall.
2. The backlight module for preventing light leakage according to claim 1, characterized in that: The FPC includes a body, a reinforcement plate and a connector, the reinforcement plate is fixed to the upper surface of the body, both ends of the reinforcement plate have fixed parts extending outward, the two fixed parts are beyond the edge of the body, the lower surfaces of the two fixed parts are fixed with first strong magnetic blocks, the connector is arranged below the body, and two second strong magnetic blocks corresponding to the two first strong magnetic blocks are fixed on the connector.
3. The backlight module for preventing light leakage according to claim 2, characterized in that: The connector is provided with two grooves, and the two second strong magnetic blocks are respectively fixed in the two grooves.
4. The backlight module for preventing light leakage according to claim 3, characterized in that: The edge of the groove is provided with a chamfer.
5. The backlight module for preventing light leakage according to claim 4, characterized in that: The chamfer is a right angle.
6. The backlight module for preventing light leakage according to claim 4, characterized in that: The chamfer is a rounded corner.
7. The backlight module for preventing light leakage according to claim 3, characterized in that: The outer dimensions of the second strong magnetic block are greater than those of the first strong magnetic block, and the outer dimensions of the groove correspond to those of the first strong magnetic block and the second strong magnetic block.
8. The backlight module for preventing light leakage according to claim 3, characterized in that: The depth of the groove is equal to the sum of the thicknesses of the first strong magnetic block and the second strong magnetic block.
9. The backlight module for preventing light leakage according to claim 2, characterized in that: The first strong magnetic block and the second strong magnetic block are both made of strong neodymium iron boron magnets.
10. The backlight module for preventing light leakage according to claim 2, characterized in that: The first strong magnetic block and the second strong magnetic block have different colors.