A reflective sheet structure, LCD display module and display device

Abstract

The utility model discloses a kind of reflecting sheet structure, LCD display module and display device, the reflecting sheet structure includes glue frame and reflecting sheet, the reflecting sheet is fixed on the glue frame by back glue, the back glue is equipped with multiple openings, the multiple openings are staggered distribution. The device is set on the back glue multiple staggered distribution openings, effectively reduce the stress concentration between reflecting sheet and glue frame, so that reflecting sheet can be freely adjusted position when temperature changes, reduce the deformation caused by the difference of thermal expansion coefficient, to effectively inhibit the water wave phenomenon on display screen, improve the stability of display quality.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal display devices, and in particular to a reflective sheet structure, an LCD display module, and a display device. Background Technology

[0002] In liquid crystal display modules, the reflector is a key component of the backlight module, its main function being to reflect light to improve display quality and optical performance. In existing technologies, the reflector is typically fixed to the frame using adhesive, and the openings in the adhesive are usually flush and regularly arranged (e.g., Figure 1 (As shown). However, this fixing method is prone to stress concentration under heat or external force, which can cause wrinkles or bulges in the reflective sheet, resulting in a water ripple effect on the phone screen. When consumers use the phone, the water ripple effect on the screen can interfere with normal visual perception and also affect the phone screen's shooting performance.

[0003] In addition, the adhesive side of the reflective sheet is aligned with the direction of the roll material (e.g., Figures 2-3 As shown, after removal, the reflective sheet is prone to warping. Warping causes stress concentration from the inside out in localized areas, which further exacerbates the wrinkling problem of the reflective sheet. This warping not only affects the flatness of the reflective sheet but may also lead to optical defects and reduce display quality. Utility Model Content

[0004] The purpose of this invention is to provide a reflective sheet structure, an LCD display module, and a display device to solve the problem of wrinkles or bulges caused by stress concentration in existing reflective sheets, avoid water ripples, and improve the display effect.

[0005] To solve the above-mentioned technical problems, this utility model provides a reflective sheet structure, an LCD display module, and a display device. The reflective sheet structure includes a frame and a reflective sheet. The reflective sheet is fixed to the frame by an adhesive backing. The adhesive backing has multiple openings, which are staggered.

[0006] Furthermore, the plurality of openings are staggered between adjacent rows.

[0007] Furthermore, the size of the plurality of openings is 3-5 mm.

[0008] Furthermore, the reflective sheet is rolled up, and the bending direction of the reflective sheet when it is fixed to the adhesive frame by the adhesive backing is opposite to the winding direction of its own roll.

[0009] Furthermore, the reflective sheet includes a reflective surface and a non-reflective surface, wherein the reflective surface is one side surface of the reflective sheet and the non-reflective surface is the other side surface of the reflective sheet.

[0010] Furthermore, a protective film is provided on the non-reflective surface of the reflective sheet, and the protective film is attached to the non-reflective surface.

[0011] An LCD display module includes the above-mentioned reflective sheet structure and a light guide plate, wherein a frame is provided on both sides of the light guide plate.

[0012] Furthermore, the reflective surface of the reflective sheet is concave and faces the light guide plate.

[0013] A display device includes the LCD display module described above.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] The reflective sheet structure, LCD display module, and display device proposed in this utility model effectively reduce stress concentration between the reflective sheet and the frame by setting multiple staggered openings on the adhesive backing. This allows the reflective sheet to freely adjust its position when the temperature changes, reducing deformation caused by differences in thermal expansion coefficients. As a result, it effectively suppresses the water ripple phenomenon on the display screen and improves the stability of the display image quality.

[0016] Furthermore, by setting the reflective surface of the reflector to be installed in the opposite direction to the roll material, a structure in which internal and external stresses are balanced is formed. This allows the inward stress of the cup-shaped reflector to cancel out the outward stress generated by the staggered design of the adhesive backing opening, further reducing the overall stress level, significantly improving the wrinkling phenomenon of the reflector, and ensuring that the reflector structure maintains stable optical performance during long-term use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the reflective sheet structure in the background art;

[0018] Figure 2 This is a schematic diagram of the structure of an LCD display module in the background art;

[0019] Figure 3 This is a schematic diagram of the installation of an LCD display module in the background art;

[0020] Figure 4 This is a schematic diagram of the reflector structure in one embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of an LCD display module in one embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the installation of the LCD display module in one embodiment of the present invention.

[0023] Reference numerals: 1. Reflective sheet; 2. Adhesive backing; 3. Adhesive frame; 4. Light guide plate; 5. Reflective surface; 6. Non-reflective surface; 7. Protective film; 8. Stress. Detailed Implementation

[0024] Based on the teachings of this specification, those skilled in the art can form new technical solutions by combining different implementation methods without creating technical contradictions. Such variations should be considered to fall within the protection scope of this patent.

[0025] The following detailed description, with reference to the schematic diagrams, illustrates a reflective sheet structure, an LCD display module, and a display device according to the present invention. Preferred embodiments of the present invention are shown. It should be understood that those skilled in the art can modify the present invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the present invention.

[0026] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0027] It should be noted that in the illustrations, components that are identical or similar to those in the prior art are labeled with the same numbers for ease of understanding and correspondence. The actual differences between the components will be described in detail below.

[0028] Example 1

[0029] like Figure 4-6 As shown in Embodiment 1 of this utility model, a reflective sheet structure is proposed, including a frame 3 and a reflective sheet 1. The reflective sheet 1 is fixed to the frame 3 by an adhesive backing 2. The adhesive backing 2 has multiple openings, which are staggered to effectively disperse stress 8 and avoid wrinkling and bulging of the reflective sheet 1 caused by stress concentration 8. At the same time, the staggered opening design enhances the stability of the reflective sheet 1 during long-term use, reduces the stress 8 caused by the shrinkage of the adhesive backing 2 or external forces, and extends the service life of the reflective sheet 1.

[0030] In this embodiment, the plurality of openings are staggered between adjacent rows, which further distributes the stress 8 more evenly across the entire reflective sheet 1, avoiding the concentration of stress 8 in a specific area. This not only improves the flatness of the reflective sheet 1, but also enhances its stability under heat or external force.

[0031] In a preferred embodiment, the opening is square in shape. A square opening has a clear boundary and a uniform geometry, which not only more accurately disperses stress 8, reduces stress concentration points, lowers the risk of wrinkles and bulges in the reflector 1, and improves the flatness and stability of the reflector 1, but also enhances structural strength, enabling the reflector 1 to better resist the effects of external forces and stresses during long-term use, thus extending its service life.

[0032] In this embodiment, the width of the plurality of openings is 3-5 mm. Different sizes of reflective sheets 1 will face different stress environments during use. By adjusting the opening size, stress can be better dispersed, reducing wrinkles and bulges caused by stress concentration. For example, large-size reflective sheets 1, due to their larger area, have a higher demand for stress dispersion, thus requiring larger openings to achieve better stress dispersion.

[0033] Furthermore, the choice of opening size also needs to consider the structural strength of the adhesive backing 2. A smaller opening can maintain the overall structural strength of the adhesive backing 2, while a larger opening, although it can better distribute stress, may reduce the strength of the adhesive backing 2. Therefore, based on the size of the reflective sheet 1 and the usage environment, an appropriate opening size should be selected to achieve the best balance between stress distribution and structural strength.

[0034] In actual production, you can refer to Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in the prior art, the reflective sheet 1 is supplied as a roll, with the adhesive backing surface of the reflective sheet 1 aligned with the roll direction. After removal, the reflective sheet 1 exhibits a warping phenomenon, caused by stress concentration from the inside out in a localized area. In this application, however, the reflective sheet 1 is still supplied as a roll, meaning it has a certain curvature, giving it a certain bending characteristic in its initial state. But the adhesive backing surface of the reflective sheet is in the opposite direction to the roll direction, resulting in a bowl-shaped warping phenomenon after removal. This means that the bending direction of the reflective sheet 1 when fixed to the frame 3 by the adhesive backing 2 is opposite to its own rolled winding direction, thus generating anti-rolling stress.

[0035] In contrast, the warped reflector 1 is attached to the frame by the adhesive backing 2. The existing warped stress of the reflector 1 is superimposed on the stress caused by the flush design of the adhesive backing 2, resulting in greater stress and wrinkling of the reflector. In this application, the cupped phenomenon causes localized inward stress, which is offset by outward stress from the opening of the adhesive backing 2. The two stresses cancel each other out, reducing the overall stress and thus improving the wrinkling of the reflector 1, enhancing its flatness and optical performance.

[0036] In this embodiment, the reflective sheet 1 includes a reflective surface 5 and a non-reflective surface 6. The reflective surface 5 is one side surface of the reflective sheet 1, mainly responsible for reflecting light to improve the brightness and optical performance of the display module. The non-reflective surface 6 is the other side surface of the reflective sheet 1, typically used to fix and protect the reflective sheet 1.

[0037] A protective film 7 is provided on the non-reflective surface 6 of the reflective sheet 1, and the protective film 7 is attached to the non-reflective surface 6. The protective film 7 is made of PET material, which can effectively prevent the non-reflective surface 6 from being scratched, contaminated and physically damaged, and also enhances the overall structural stability of the reflective sheet 1 and reduces deformation caused by external forces.

[0038] Example 2

[0039] In this second embodiment, as Figures 5-6 As shown, an LCD display module is proposed, including the reflective sheet 1 structure proposed in Embodiment 1, and a light guide plate 4. The light guide plate 4 is responsible for uniformly distributing the light from the backlight onto the entire display panel. Adhesive frames 3 are provided on both sides of the light guide plate 4 to fix the light guide plate 4 and the reflective sheet 1, ensuring the structural stability of the entire module.

[0040] The reflective surface 5 of the reflective sheet 1 is concave and faces the light guide plate 4. By utilizing the cup-shaped warping phenomenon of the reflective sheet 1 and the staggered design of the adhesive 2, the stress is mutually canceled, which significantly reduces stress concentration and improves the wrinkling phenomenon of the reflective sheet 1. This not only improves the flatness and optical performance of the reflective sheet 1, but also enhances the structural stability.

[0041] Example 3

[0042] In this third embodiment, a display device is provided, including the aforementioned LCD display module. The display device utilizes the reflective sheet 1, which initially has a certain curvature. When the reflective sheet 1 is fixed to the frame 3 using adhesive 2, its bending direction is opposite to the winding direction of the rolled material, thereby generating anti-rolling stress, i.e., bowl-shaped warping. Bowl-shaped warping causes the stress at localized locations to be from the outside in, which cancels outward stress generated by the staggered openings of the adhesive 2. This reduces stress concentration, improves the wrinkling phenomenon of the reflective sheet 1, and enhances the flatness and optical performance of the reflective sheet 1.

[0043] The versatility and flexibility of the display device make it applicable to a variety of liquid crystal display devices, including mobile phones, tablets, laptops, and monitors, and it has a broad market prospect.

[0044] In summary, the reflective sheet structure, LCD display module, and display device proposed in this utility model effectively reduce stress concentration between the reflective sheet and the frame by setting multiple staggered openings on the adhesive backing. This allows the reflective sheet to freely adjust its position when the temperature changes, reducing deformation caused by differences in thermal expansion coefficients. As a result, it effectively suppresses the water ripple phenomenon on the display screen and improves the stability of the display image quality.

[0045] Furthermore, by setting the reflective surface of the reflector to be installed in the opposite direction to the roll material, a structure in which internal and external stresses are balanced is formed. This allows the inward stress of the cup-shaped reflector to cancel out the outward stress generated by the staggered design of the adhesive backing opening, further reducing the overall stress level, significantly improving the wrinkling phenomenon of the reflector, and ensuring that the reflector structure maintains stable optical performance during long-term use.

[0046] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A reflective sheet structure, characterized in that, It includes a frame and a reflective sheet. The reflective sheet is fixed to the frame by an adhesive backing. The adhesive backing has multiple openings that are staggered.

2. The reflective sheet structure as described in claim 1, characterized in that, The multiple openings are staggered between adjacent rows.

3. The reflective sheet structure as described in claim 2, characterized in that, The size of the plurality of openings is 3-5 mm.

4. The reflective sheet structure as described in claim 1, characterized in that, The reflective sheet is rolled up, and the bending direction of the reflective sheet when it is fixed to the adhesive frame by the adhesive backing is opposite to the winding direction of its own roll.

5. The reflective sheet structure as described in claim 4, characterized in that, The reflective sheet includes a reflective surface and a non-reflective surface, wherein the reflective surface is one side surface of the reflective sheet and the non-reflective surface is the other side surface of the reflective sheet.

6. The reflective sheet structure as described in claim 4, characterized in that, A protective film is provided on the non-reflective surface of the reflective sheet, and the protective film is attached to the non-reflective surface.

7. An LCD display module, characterized in that, The reflective sheet structure according to any one of claims 1-6 further includes a light guide plate, wherein a frame is provided on both sides of the light guide plate.

8. The LCD display module as described in claim 7, characterized in that, The reflective surface of the reflective sheet is concave and faces the light guide plate.

9. A display device, characterized in that, Includes the LCD display module as described in claim 7 or 8.

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