Backlight display module for improving film wrinkles
By setting up extension blocks and avoidance ports on the stop arm, the membrane wrinkle problem caused by insufficient expansion gap of the film material in the backlight display module is solved, and the membrane material assembly accuracy and high temperature stability are achieved, and the display effect is improved.
Patent Information
- Application Number
- CN202422116280.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-29
AI Technical Summary
Inadequate expansion gap between the backlight film material and the rear iron frame causes the film material to bulge at high temperatures, causing the film wrinkle problem. It is difficult for the prior art to effectively avoid assembly deviation and film material displacement.
The extension block is arranged on the stop arm and is flush with the bottom of the middle frame. The film assembly is avoided by the avoidance port design, providing a high-temperature expansion space, and improving the accuracy of the film assembly.
Through the design of the extension block and the avoidance port, the film material assembly is eliminated, so as to ensure that the film material has sufficient expansion space at high temperatures, avoid membrane wrinkles, and improve assembly accuracy and display effect.
Smart Images
Figure CN223092252U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid crystal display, in particular to a backlight display module for improving film wrinkles. Background Art
[0002] In the related art, the backlight film material has a large thermal expansion and contraction effect, while the expansion and contraction ratio of the rear iron frame is very small. Therefore, a certain expansion gap needs to be reserved between the backlight film material and the rear iron frame so that the backlight film material has enough space to move during high-temperature expansion, avoiding the problem that the film material bulges towards the display screen due to insufficient expansion space after high temperature, thus affecting the display effect.
[0003] Since gaps are reserved between the periphery of the backlight film material and the rear iron frame, conventional backlight display modules will add bumps at the middle position of the light guide plate near the lamp. The gap between the bumps and the film material is matched at 0.2 mm on one side, so that the film material can be positioned through the bumps to achieve an accurate centering assembly effect. In terms of fixation, double-sided tape is usually added at the front edge position near the LED lamp between the film materials and between the film material and the light guide plate for pasting and fixing. In the direction of the display screen, a certain gap is also reserved between the middle frame and the film material to avoid the middle frame pressing on the film material after assembly, resulting in the film material being unable to expand and contract freely at high and low temperatures.
[0004] However, during the manual assembly process, the outermost film material is relatively easy to be assembled onto the bumps, resulting in assembly deviation, and the expansion gap reserved on one side becomes smaller. And it is relatively difficult for the film material to shift under the fixing action of the double-sided tape. Therefore, when the product is in a high-temperature state, the film material on the side with a small gap has insufficient expansion space, which will cause the film material to bulge towards the display screen, resulting in the problem of film wrinkles, as shown below Figure 1 as follows. Summary of the Utility Model
[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a backlight display module for improving film wrinkles, which can improve the problem of film wrinkles in the backlight display module.
[0006] The purpose of the utility model is achieved by the following technical solutions:
[0007] In a first aspect of the present application, a backlight display module for improving film wrinkles is provided, including a middle frame, with an avoidance opening formed on the middle frame; a light guide plate, located on one side of the middle frame; a stop arm, arranged on the light guide plate; and an extension block, arranged on the stop arm, the extension block being parallel to the avoidance opening.
[0008] It further includes a film material assembly, the film material assembly includes a first film layer, a second film layer and a third film layer, the first film layer is disposed on one side surface of the second film layer, the other side surface of the second film layer is disposed on one side surface of the third film layer, and the other side surface of the third film layer is disposed on the light guide plate.
[0009] A deformation area is provided between the extension block and the first film layer.
[0010] The size of the avoidance opening is larger than the size of the extension block.
[0011] The film material assembly further includes a fourth film layer, and the fourth film layer is disposed on the light guide plate.
[0012] It further includes a rear iron frame, and the rear iron frame is disposed on the fourth film layer.
[0013] It further includes an FPC board, and the FPC board is disposed on the rear iron frame.
[0014] It further includes an LED lamp, and the LED lamp is disposed on the FPC board.
[0015] The avoidance opening has a rectangular cross-sectional structure.
[0016] A plurality of LED lamps are provided, and each of the LED lamps is respectively and spacedly disposed on the FPC board.
[0017] Compared with the prior art, the present utility model has at least the following advantages:
[0018] By providing an extension block on the retaining arm, the height of the retaining arm can be extended. And the extension block is flush with the bottom of the middle frame, thereby improving the problem of assembling the film material onto the surface of the extension block. Even if the film material is assembled onto the surface of the extension block, since there is no gap in the direction close to the middle frame, the film material will interfere with the avoidance opening when assembling the middle frame, resulting in the middle frame not being assembled in place, thereby reminding the assembler that the film material needs to be assembled in place before proceeding to the next step, eliminating the problem of the film material being assembled offset, and thus improving the film wrinkle problem. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments.
[0020] Figure 1 It is a schematic structural diagram of the prior art in an embodiment of the present utility model;
[0021] Figure 2 It is a schematic structural diagram of a backlight display module for improving film wrinkles in an embodiment of the present utility model;
[0022] Figure 3Schematic diagram of another implementation manner of the backlight display module for improving film wrinkles in an embodiment of the present utility model. Detailed implementation manner
[0023] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the 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 limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.
[0024] It should be understood that although the terms "first", "second", "third", etc. may be used in the present application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.
[0025] Unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0026] Currently, during the manual assembly process, the outermost film material is relatively easy to be assembled onto the bumps, resulting in assembly deviation, and thus the expansion gap reserved on one side becomes smaller. And it is relatively difficult for the film material to shift under the fixing effect of the double-sided tape. Therefore, when the product is in a high-temperature state, the film material on the side with a small gap has insufficient expansion space, which will cause the film material to bulge towards the display screen, resulting in the film wrinkle problem, as follows Figure 1 shown.
[0027] In view of the above problems, the embodiments of the present application provide a backlight display module for improving film wrinkles, which can improve the problem of film wrinkles in the backlight display module.
[0028] The technical solutions of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
[0029] Refer to Figure 2 and Figure 3, A backlight display module for improving film wrinkles, comprising a middle frame 100, a light guide plate 200, a blocking arm 300 and an extension block 400. An avoidance opening 110 is formed on the middle frame 100; the light guide plate 200 is located on one side of the middle frame 100; the blocking arm 300 is arranged on the light guide plate 200; the extension block 400 is arranged on the blocking arm 300, and the extension block 400 is parallel to the avoidance opening 110.
[0030] It should be noted that by providing the extension block 400 on the blocking arm 300, the height of the blocking arm 300 can be extended. And the extension block 400 is flush with the bottom of the middle frame 100, thereby improving the problem of the film material being assembled onto the surface of the extension block 400. Even if there is a situation where the film material is assembled onto the surface of the extension block 400, since there is no gap in the direction close to the middle frame 100, the film material will interfere with the avoidance opening 110 during the assembly of the middle frame 100, resulting in the middle frame 100 not being assembled in place. Furthermore, it reminds the assembly personnel that the film material needs to be assembled in place before proceeding to the next step, eliminating the problem of the film material being assembled offset, thereby improving the film wrinkle problem. Among them, the extension block 400 is an extension part of the blocking arm 300, which extends to the bottom of the middle frame 100. The avoidance opening 110 is provided to avoid interference between the extension block 400 and the middle frame 100. Therefore, the size of the avoidance opening 110 is larger than that of the extension block 400. Specifically, the avoidance opening 110 has a rectangular cross-sectional structure, and the size of the avoidance opening 110 is 0.5 mm larger than that of the extension block 400 on a single side.
[0031] Refer to Figure 2 , A backlight display module for improving film wrinkles further includes a film material assembly 500. The film material assembly 500 includes a first film layer 510, a second film layer 520 and a third film layer 530. The first film layer 510 is arranged on one side surface of the second film layer 520, the other side surface of the second film layer 520 is arranged on one side surface of the third film layer 530, and the other side surface of the third film layer 530 is arranged on the light guide plate 200.
[0032] It should be noted that the first film layer 510 and the second film layer 520 are brightness enhancement films, and the third film layer 530 is a diffusion film.
[0033] Refer to Figure 2 , A deformation area 600 is provided between the extension block 400 and the first film layer 510.
[0034] It should be noted that the deformation area 600 is a high-temperature collision space for the film layer.
[0035] Refer to Figure 2 , The film material assembly 500 further includes a fourth film layer 540, and the fourth film layer 540 is arranged on the light guide plate 200. Further, a backlight display module for improving film wrinkles further includes a rear iron frame 700, and the rear iron frame 700 is arranged on the fourth film layer 540.
[0036] It should be noted that the fourth film layer 540 is a reflective film, which is pasted on the rear iron frame 700.
[0037] Refer to Figure 2 , in one embodiment, a backlight display module for improving film wrinkles further includes an FPC board 800, and the FPC board 800 is disposed on the rear iron frame 700. In one embodiment, a backlight display module for improving film wrinkles further includes an LED lamp 900, and the LED lamp 900 is disposed on the FPC board 800. Specifically, a plurality of LED lamps 900 are provided, and each LED lamp 900 is respectively and spacedly disposed on the FPC board 800.
[0038] It should be noted that the LED lamp 800 is used to provide light source.
[0039] The solution of the present application has been described in detail with reference to the accompanying drawings above. In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily essential to the present application. In addition, it can be understood that the steps in the method embodiments of the present application can be adjusted, combined and deleted according to actual needs, and the modules in the device embodiments of the present application can be combined, divided and deleted according to actual needs.
[0040] The various embodiments of the present application have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application or the improvement of the technology in the market, or to enable other ordinary skilled in the art to understand the embodiments disclosed herein.
Claims
1. A backlight display module for improving film wrinkles, characterized in that, Comprising: A middle frame, with a clearance opening formed on the middle frame; A light guide plate, which is located on one side of the middle frame; A blocking arm, which is arranged on the light guide plate; An extension block, which is arranged on the blocking arm, and the extension block is parallel to the clearance opening.
2. The backlight display module for improving film wrinkles according to claim 1, wherein It further includes a film material assembly, the film material assembly includes a first film layer, a second film layer and a third film layer, the first film layer is arranged on one side surface of the second film layer, the other side surface of the second film layer is arranged on one side surface of the third film layer, and the other side surface of the third film layer is arranged on the light guide plate.
3. The backlight display module for improving film wrinkles according to claim 2, wherein, A deformation area is provided between the extension block and the first film layer.
4. The backlight display module for improving film wrinkles according to claim 1, wherein The size of the clearance opening is larger than the size of the extension block.
5. The backlight display module for improving film wrinkles according to claim 2, wherein, The film material assembly further includes a fourth film layer, and the fourth film layer is arranged on the light guide plate.
6. The backlight display module for improving film wrinkles according to claim 5, wherein, It further includes a rear iron frame, and the rear iron frame is arranged on the fourth film layer.
7. The backlight display module for improving film wrinkles according to claim 6, wherein It further includes an FPC board, and the FPC board is arranged on the rear iron frame.
8. The backlight display module for improving film wrinkles according to claim 7, wherein, It further includes an LED lamp, and the LED lamp is arranged on the FPC board.
9. The backlight display module for improving film wrinkles according to claim 1, wherein, The clearance opening has a rectangular cross-sectional structure.
10. The backlight display module for improving film wrinkles according to claim 8, wherein A plurality of LED lamps are provided, and each of the LED lamps is respectively arranged on the FPC board at intervals.