Backlight module capable of preventing glue overflow and liquid crystal display device

Abstract

The utility model relates to the technical field of display screens, in particular to a backlight module capable of preventing glue overflow and a liquid crystal display device. The backlight module capable of preventing glue overflowing comprises a backlight iron frame, a backlight assembly is arranged in the backlight iron frame, a groove surrounding the backlight iron frame is formed in the upper surface of the backlight iron frame, and the distance between the groove and the inner wall of the backlight iron frame is not smaller than 2 mm. The distance between the groove and the outer wall of the backlight iron frame is larger than the horizontal distance between the cover plate of the liquid crystal display screen and the outer wall of the backlight iron frame. According to the backlight module capable of preventing glue overflow, glue overflow can be prevented when the backlight module is attached to a display screen.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a backlight module and liquid crystal display device that prevents adhesive overflow. Background Technology

[0002] The backlight module is a key component of the display device. Its main function is to provide uniform and stable backlight illumination for the LCD screen, ensuring that the screen can clearly display content under various lighting conditions.

[0003] A backlight module typically consists of a backlight frame and components such as a backlight source, light guide plate, reflector, and optical film layer set within the backlight frame. The backlight module and the LCD screen are fixed and bonded together using RTV adhesive to form an LCD display device.

[0004] When bonding the backlight module and the LCD screen, RTV adhesive is first applied, followed by pressure holding. During the pressure holding process, adhesive often overflows from the cover plate, requiring manual labor to wipe it off, which affects bonding efficiency. In addition, wiping off the adhesive can easily damage the outer coating of the frame. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of this application is to provide a backlight module and liquid crystal display device that prevent glue overflow, so as to prevent glue overflow when the backlight module is attached to the display screen.

[0006] To achieve the above objectives, this application provides a backlight module for preventing adhesive overflow, comprising:

[0007] A backlight frame is provided, in which a backlight assembly is disposed. A groove is provided on the upper surface of the backlight frame, the distance between the groove and the inner wall of the backlight frame is not less than 2mm, and the distance between the groove and the outer wall of the backlight frame is greater than the horizontal distance between the cover plate of the liquid crystal display and the outer wall of the backlight frame.

[0008] As a further optimization of the backlight module for preventing adhesive overflow provided by this utility model, the width of the groove is 0.6-1.0mm.

[0009] As a further optimization of the backlight module for preventing adhesive overflow provided by this utility model, the depth of the groove is 0.6-1.0mm.

[0010] As a further optimization of the backlight module for preventing adhesive overflow provided by this utility model, the cross-section of the groove is any one of rectangle, semicircle, trapezoid and triangle.

[0011] As a further optimization of the backlight module for preventing adhesive overflow provided by this utility model, the bottom of the groove is provided with an arc edge.

[0012] As a further optimization of the backlight module for preventing adhesive overflow provided by this utility model, the difference between the distance between the groove and the outer wall of the backlight iron frame and the horizontal distance between the cover plate of the liquid crystal display and the outer wall of the backlight iron frame is not less than 0.5mm.

[0013] As a further optimization of the backlight module for preventing adhesive overflow provided by this utility model, the backlight iron frame includes any one of a rectangular iron frame and a circular iron frame.

[0014] As a further optimization of the backlight module for preventing adhesive overflow provided by this utility model, the backlight assembly includes a reflective film, a light guide plate, a diffusion film, a lower brightness enhancement film, and an upper brightness enhancement film stacked sequentially within the backlight iron frame.

[0015] As a further optimization of the backlight module for preventing adhesive overflow provided by this utility model, the reflective film extends to the frame wall of the backlight iron frame.

[0016] To achieve the above objectives, this application also provides a liquid crystal display device, comprising:

[0017] The backlight module described above prevents adhesive overflow;

[0018] The liquid crystal display screen is fixedly bonded to the backlight module using RTV adhesive.

[0019] The backlight module for preventing adhesive overflow provided in this application has the following beneficial effects:

[0020] This application discloses a backlight module that prevents adhesive overflow. By setting grooves at specific positions on the backlight frame, the RTV adhesive will not overflow outside the backlight frame during bonding, thus avoiding the need for workers to wipe off the overflow and improving bonding efficiency.

[0021] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing this application. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present application and form part of the specification. Together with the embodiments of the present application, they serve to explain the present application but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the backlight module for preventing adhesive overflow according to Embodiment 1 of this application;

[0024] Figure 2 for Figure 1 Sectional view along the middle AA direction;

[0025] Figure 3This is a schematic diagram of the liquid crystal display device according to Embodiment 2 of this application;

[0026] In the diagram: 100-backlight frame, 101-groove, 102-reflective film, 103-light guide plate, 104-diffuser film, 105-lower brightness enhancement film, 106-upper brightness enhancement film, 107-LED lamp, 108-FPC, 109-RTV adhesive, 110-cover plate, 111-adhesive, 112-upper polarizer, 113-first glass substrate, 114-second glass substrate, 115-lower polarizer. Detailed Implementation

[0027] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0028] It should be understood that the steps described in the method embodiments of this application may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this application is not limited in this respect.

[0029] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.

[0030] It should be noted that the terms "one" and "multiple" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". "Multiple" should be understood as two or more.

[0031] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0032] Example 1

[0033] One embodiment of this application provides a backlight module that prevents adhesive overflow, which will be referred to below. Figures 1-2 This application provides a detailed description of a backlight module for preventing adhesive overflow, such as... Figure 1-2 As shown:

[0034] A backlight module for preventing adhesive overflow according to Embodiment 1 of this application includes:

[0035] A backlight frame 100 is provided, and a backlight assembly is provided inside the backlight frame 100. A groove 101 is provided on the upper surface of the backlight frame 100, which is not less than 2mm away from the inner wall of the backlight frame 100. The distance between the groove 101 and the outer wall of the backlight frame 100 is greater than the horizontal distance between the cover plate of the liquid crystal display and the outer wall of the backlight frame 100.

[0036] It should be noted that the distance between the groove 101 and the inner wall of the backlight frame 100 is not less than 2mm, in order to ensure that there is an adhesive dot position of not less than 2mm on the backlight frame 100, so as to ensure a tight fit.

[0037] It should be noted that the distance between the groove 101 and the outer wall of the backlight frame 100 is greater than the horizontal distance between the cover plate of the LCD screen and the outer wall of the backlight frame 100. This is to ensure that the groove 101 is below the cover plate of the LCD screen, preventing the cover plate from failing to cover the groove and causing it to be exposed, thus affecting the viewing experience.

[0038] In this embodiment, the width of the groove 101 is 0.6-1.0mm, the depth of the groove 101 is 0.6-1.0mm, and the bottom of the groove 101 is provided with an arc edge of R0.2mm.

[0039] In other embodiments, the cross-section of the groove 101 can also be any one of a rectangle, a semicircle, a trapezoid, and a triangle.

[0040] In this embodiment, the difference between the distance between the groove 101 and the outer wall of the backlight frame 100 and the horizontal distance between the cover plate of the liquid crystal display and the outer wall of the backlight frame 100 is not less than 0.5mm.

[0041] In this embodiment, the backlight frame 100 is a rectangular backlight frame.

[0042] In some other embodiments, the backlight frame 100 may also be a circular frame.

[0043] In this embodiment, the backlight assembly includes a reflective film 102, a light guide plate 103, a diffusion film 104, a lower brightness enhancement film 105, and an upper brightness enhancement film 106, which are stacked sequentially within the backlight frame 100, as well as an LED lamp 107.

[0044] In this embodiment, the reflective film 102 extends to the frame wall of the backlight frame 100.

[0045] Example 2

[0046] One embodiment of this application provides a liquid crystal display device, see reference. Figure 3 The liquid crystal display device of Embodiment 2 includes:

[0047] The liquid crystal display screen is fixedly bonded to the backlight module using RTV adhesive 109.

[0048] In this embodiment, the liquid crystal display screen includes a first glass substrate 113 and a second glass substrate 114 bonded together. An upper polarizer 112 is disposed on the first glass substrate 113, and a cover plate 110 is bonded to the upper polarizer 112 by an adhesive 111. A lower polarizer 115 is disposed under the second glass substrate 114.

[0049] It is understandable that the difference between the distance between the recess 101 and the outer wall of the backlight frame 100 and the horizontal distance between the cover plate 110 of the LCD screen and the outer wall of the backlight frame 100 is not less than 0.5mm, that is... Figure 3 The distance between d and d is not less than 0.5 mm.

[0050] The above description is merely a partial embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

[0051] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in sequential order. Multitasking and parallel processing may be advantageous in certain environments. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this application. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0052] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

Claims

1. A backlight module for preventing adhesive overflow, characterized in that, The device includes a backlight frame, in which a backlight assembly is disposed. The upper surface of the backlight frame has a groove that surrounds the backlight frame. The distance between the groove and the inner wall of the backlight frame is not less than 2 mm. The distance between the groove and the outer wall of the backlight frame is greater than the horizontal distance between the cover plate of the liquid crystal display and the outer wall of the backlight frame.

2. The backlight module for preventing adhesive overflow according to claim 1, characterized in that, The width of the groove is 0.6-1.0 mm.

3. The backlight module for preventing adhesive overflow according to claim 1, characterized in that, The depth of the groove is 0.6-1.0 mm.

4. The backlight module for preventing adhesive overflow according to claim 1, characterized in that, The cross-section of the groove can be any one of a rectangle, a semi-circle, a trapezoid, or a triangle.

5. The backlight module for preventing adhesive overflow according to claim 1, characterized in that, The bottom of the groove is provided with an arc edge.

6. The backlight module for preventing adhesive overflow according to claim 1, characterized in that, The difference between the distance between the groove and the outer wall of the backlight frame and the horizontal distance between the cover plate of the LCD screen and the outer wall of the backlight frame is not less than 0.5mm.

7. The backlight module for preventing adhesive overflow according to claim 6, characterized in that, The backlight frame includes either a rectangular frame or a circular frame.

8. The backlight module for preventing adhesive overflow according to claim 1, characterized in that, The backlight assembly includes a reflective film, a light guide plate, a diffuser film, a lower brightness enhancement film, and an upper brightness enhancement film, which are stacked sequentially within the backlight frame.

9. The backlight module for preventing adhesive overflow according to claim 8, characterized in that, The reflective film extends to the frame wall of the backlight iron frame.

10. A liquid crystal display device, characterized in that, include: Backlight module for preventing adhesive overflow as described in any one of claims 1-9; The liquid crystal display screen is fixedly bonded to the backlight module using RTV adhesive.

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