Liquid crystal module backlight structure capable of preventing foreign matter from invading

Abstract

The utility model discloses a liquid crystal module backlight structure capable of preventing foreign matter from invading. The liquid crystal module backlight structure comprises shading glue, an upper brightness enhancement film, a lower brightness enhancement film, a diffusion plate, a light guide plate, a reflector plate, a frame assembly and a surface mounting assembly. An annular double-faced adhesive tape is arranged on the periphery of the reflector plate, the annular double-faced adhesive tape and the reflector plate are integrally formed in a punching mode, an exhaust groove is formed in the annular double-faced adhesive tape, and the annular double-faced adhesive tape is used for fixing the reflector plate and the light guide plate. According to the liquid crystal module backlight structure capable of preventing the foreign matter from invading, the annular double-faced adhesive tape is arranged on the periphery of the reflector plate, and the exhaust grooves are formed. The design can effectively prevent foreign matters from entering the visible area to cause scratches, so that the problems of white spots or white balls and the like caused by the foreign matters are solved, and the overall reliability and the user satisfaction of the product are remarkably improved.

Description

Technical Field

[0001] This application belongs to the field of liquid crystal display module technology, and in particular relates to a liquid crystal module backlight structure to prevent foreign objects from entering. Background Technology

[0002] With the increasingly compact design of LCD module products, the market has placed extremely high demands on product reliability and quality. However, during mechanical reliability testing of modules, defects such as white spots or white clumps often occur, and these problems are difficult to effectively solve and control within the industry. Specifically, existing technologies face the following technical challenges: During mechanical reliability testing of the module backlight unit (BL), such as micro-drop, free-height drop, and roller tests, foreign objects can easily penetrate the lower dot surface of the light guide plate, causing scratches in the visible area and leading to quality problems such as white spots or white clumps. These problems not only affect the visual performance of the product but also reduce the overall reliability and user satisfaction. Therefore, there is an urgent need for a technical solution that can effectively prevent foreign objects from entering the module backlight unit and improve the mechanical reliability of the module. Utility Model Content

[0003] The purpose of this application is to provide a backlight structure for a liquid crystal module that prevents foreign objects from entering, thereby solving the problems mentioned above, such as white spots or white patches caused by foreign objects entering the visible area and scratching the light guide plate.

[0004] To achieve the above-mentioned objectives, the technical solution adopted in this application is as follows:

[0005] This application provides a backlight structure for a liquid crystal module to prevent foreign object intrusion, including: a light-shielding adhesive, an upper brightness enhancement film, a lower brightness enhancement film, a diffuser plate, a light guide plate, a reflective sheet, a frame assembly, and a surface mount assembly;

[0006] A ring-shaped double-sided adhesive is provided around the reflector sheet. The ring-shaped double-sided adhesive and the reflector sheet are integrally formed by punching. The ring-shaped double-sided adhesive has venting grooves and is used to fix the reflector sheet and the light guide plate.

[0007] Optionally, the circular double-sided adhesive tape is made of AB silicone.

[0008] Optionally, the thickness of the ring-shaped double-sided adhesive is 0.02 mm.

[0009] Optionally, the annular double-sided adhesive tape has multiple venting grooves spaced apart, with the opening size of the venting grooves being 3 to 5 mm.

[0010] Optionally, the frame components include plastic frames and iron frames.

[0011] Optionally, the surface mount assembly includes an FPC.

[0012] Optionally, the side of the light guide plate facing away from the annular double-sided adhesive is a polished surface (i.e., a rough surface), and the side of the light guide plate facing the annular double-sided adhesive is a dotted surface (mirror surface).

[0013] Compared with the prior art, the beneficial effects of the embodiments of this application are:

[0014] This application provides a backlight structure for a liquid crystal module that prevents foreign object intrusion. This structure features a ring-shaped double-sided adhesive around the reflective sheet and venting grooves. This design effectively prevents foreign objects from entering the visible area and causing scratches, thereby solving problems such as white spots or patches caused by foreign objects, significantly improving the overall reliability of the product and user satisfaction. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This illustration shows a schematic diagram of a liquid crystal module backlight structure for preventing foreign object intrusion, provided in an embodiment of this application.

[0017] Figure 2 An exploded view of a liquid crystal module backlight structure for preventing foreign object intrusion, provided in an embodiment of this application, is shown.

[0018] Figure 3 The front view of the reflective sheet and the annular double-sided adhesive provided in the embodiments of this application is shown;

[0019] Figure 4 The diagram shows a partial structure of the reflective sheet and annular double-sided adhesive provided in an embodiment of this application, viewed from the right.

[0020] Figure 5 A schematic diagram of the structure of the annular double-sided adhesive provided in an embodiment of this application is shown;

[0021] Figure 6 A schematic diagram of the light guide plate, annular double-sided adhesive, and reflective sheet provided in an embodiment of this application is shown;

[0022] Figure 7 It shows Figure 6 The diagram shows the upper right part of the light guide plate, the ring-shaped double-sided adhesive, and the reflective sheet.

[0023] Illustration:

[0024] 11. Light-shielding adhesive; 12. Upper light-enhancing film; 13. Lower light-enhancing film; 14. Diffuser plate; 15. Light guide plate; 16. Reflective sheet; 17. Frame assembly; 18. Surface mount assembly; 19. Annular double-sided adhesive; 191. Venting groove. Detailed Implementation

[0025] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] To illustrate the technical solution described in this application, specific embodiments are provided below.

[0029] Please see Figures 1 to 7 As shown, this application embodiment provides a liquid crystal module backlight structure to prevent foreign object intrusion, including: light-shielding adhesive 11, upper brightness enhancement film 12, lower brightness enhancement film 13, diffuser plate 14, light guide plate 15, reflective sheet 16, frame assembly 17, and surface mount assembly 18.

[0030] In the backlight structure of the LCD module, the functions of each of the above components are as follows:

[0031] Light-blocking adhesive 11 is applied to the edge portion to prevent light leakage.

[0032] The upper brightness enhancement film 12 and the lower brightness enhancement film 13 are used to improve the brightness of the liquid crystal display.

[0033] The diffuser plate 14 is used to homogenize the light emitted by the light guide plate 15, ensuring uniform light distribution throughout the display area.

[0034] The light guide plate 15 is used to convert a point light source or a line light source into a surface light source.

[0035] The reflector 16 is used to reflect light leaking from the back of the light guide plate 15, thereby improving light utilization efficiency.

[0036] As an example, the bezel assembly 17 includes a plastic frame and a metal frame, which are integrated into one unit. For instance, the plastic frame is typically used to secure and protect the various components within the backlight unit, while the metal frame provides additional structural strength and electromagnetic shielding.

[0037] As an example, surface mount assembly 18 may include FPC (flexible printed circuit board).

[0038] To address the problems mentioned in the background art, this application provides a liquid crystal module backlight structure to prevent foreign matter intrusion. An annular double-sided adhesive 19 is disposed around the reflective sheet 16, and the annular double-sided adhesive 19 and the reflective sheet 16 are integrally formed by punching. The annular double-sided adhesive 19 is used to prevent vibration-induced foreign matter powder from entering the lower layer of the light guide plate 15 and scratching the dotted surface (i.e., the mirror surface).

[0039] As an example, the annular double-sided adhesive 19 is made of AB silicone and has a thickness of 0.02 mm. The side of the light guide plate 15 facing away from the annular double-sided adhesive 19 is a polished surface (i.e., a rough surface), while the side of the light guide plate 15 facing the annular double-sided adhesive 19 is a dotted surface (i.e., a mirror surface). AB silicone is used to fix the reflector 16 and the dotted surface (i.e., the mirror surface) of the light guide plate 15. Furthermore, due to the inconsistent shrinkage ratios of the light guide plate 15 and the annular double-sided adhesive 19, wrinkles may appear on the reflector 16 under high-temperature and low-temperature testing environments. Therefore, using AB silicone can effectively improve this wrinkling phenomenon.

[0040] Furthermore, the annular double-sided adhesive tape 19 has venting grooves 191, which are used to fix the reflector 16 and the light guide plate 15. As an example, multiple venting grooves 191 are spaced apart on the annular double-sided adhesive tape 19, and the opening size of the venting grooves 191 is 3-5mm. The venting grooves 191 are used to prevent the reflector 16 and the light guide plate 15 from being sealed, which would cause adsorption and result in watermarks on the display. They also prevent moisture from not being able to escape under high temperature and high humidity experimental conditions, which would cause display abnormalities.

[0041] In summary, this application provides a backlight structure for a liquid crystal module that prevents foreign object intrusion. This structure features an annular double-sided adhesive tape 19 around the reflective sheet 16 and venting grooves 191. This design effectively prevents foreign objects from entering the visible area and causing scratches, thereby solving problems such as white spots or patches caused by foreign objects and significantly improving the overall reliability of the product and user satisfaction.

[0042] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A backlight structure for a liquid crystal module to prevent foreign object intrusion, characterized in that, The application relates to a light shielding adhesive, an upper light increasing sheet, a lower light increasing sheet, a diffusion plate, a light guide plate, a reflecting sheet, a frame assembly and a surface-mounted component. An annular double-faced adhesive is arranged around the reflecting sheet, the annular double-faced adhesive and the reflecting sheet are integrally formed by die cutting, exhaust grooves are arranged on the annular double-faced adhesive, and the annular double-faced adhesive is used for fixing the reflecting sheet and the light guide plate. The material of the annular double-faced adhesive is AB silica gel.

2. The liquid crystal module backlight structure according to claim 1, wherein The thickness of the annular double-faced adhesive is 0.02 mm.

3. The liquid crystal module backlight structure of claim 2, wherein, A plurality of exhaust grooves are arranged on the annular double-faced adhesive at intervals, and the opening size of the exhaust grooves is 3-5 mm.

4. The liquid crystal module backlight structure of claim 1, wherein, The frame assembly comprises a glue frame and an iron frame.

5. The liquid crystal module backlight structure of claim 1, wherein, The surface-mounted component comprises an FPC.

6. The liquid crystal module backlight structure of claim 1, wherein, One side of the light guide plate opposite to the annular double-faced adhesive is a ground surface, and the other side of the light guide plate facing the annular double-faced adhesive is a screen dot surface.

7. The liquid crystal module backlight structure of claim 1, wherein, ​

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