Laptop film material anti-displacement structure and backlight module
Patent Information
- Application Number
- CN202522316254.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-10-31
AI Technical Summary
[0003]然而现有笔电类相比手机及平板背光源尺寸逐渐变大，膜材及其他结构的厚度和尺寸变大，产品整体重量更重，这不仅导致产品在跌落试验时受到的冲击力更大，而且在正常运输过程中膜材易发生移位，导致产品损坏
[0016]与现有技术相比，本申请通过在第一增光膜、第二增光膜和第二扩散膜上分别设置突出的第一耳部、第二耳部以及第三耳部，并使其同时粘贴连接至黑白遮光胶上的粘贴层，背光模组内部多片膜材的位置更加稳固，使膜材在产品跌落测试以及运输过程中膜材更不易跑偏，从而提高了产品的抗风险能力。膜材上向外延伸的耳部能够在保证膜材粘贴固定以后，大部分区域不受影响。
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Figure CN224907170U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of backlight technology, and in particular to a laptop film material anti-displacement structure and a backlight module. Background Technology
[0002] Laptop screens typically consist of an LCD module and a backlight module. Laptop backlight modules often use a four-layer film structure, namely an upper diffusion film, an upper brightness enhancement film, a lower brightness enhancement film, and a lower diffusion film stacked together. Traditional backlight modules usually have ear slots on both sides of each module and are fixed to the structural frame by adhesive.
[0003] However, compared to mobile phones and tablets, the backlight size of existing laptops is gradually increasing, and the thickness and size of the film and other structures are also increasing, resulting in a heavier overall product weight. This not only leads to greater impact force during drop tests, but also makes the film material prone to displacement during normal transportation, causing product damage.
[0004] Therefore, there is an urgent need for a more stable and impact-resistant anti-displacement structure for laptop film materials. Utility Model Content
[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a laptop backlight module and a structure to prevent displacement of the film material, which can improve the impact resistance of the laptop backlight module and reduce the risk of displacement of the internal film material.
[0006] The technical solution adopted by this application to solve the technical problem is as follows: a laptop film material anti-displacement structure, including a structural frame, wherein a receiving cavity is provided in the middle of the structural frame, and further comprising: Black and white light-blocking adhesive, wherein the black and white light-blocking adhesive is disposed on one side of the receiving cavity, and the black and white light-blocking adhesive is provided with an adhesive layer; The membrane material includes a first diffusion film, a first brightness enhancement film, a second brightness enhancement film, and a second diffusion film stacked sequentially from top to bottom; the first brightness enhancement film has a first ear extending outward on its lower side, the second brightness enhancement film has a second ear extending outward on its lower side, and the second diffusion film has a third ear extending outward on its lower side, and the first ear, the second ear, and the third ear are all adhered to the adhesive layer.
[0007] Furthermore, the adhesive layer includes a first double-sided adhesive and a second double-sided adhesive. The second double-sided adhesive is disposed on the black and white light-blocking adhesive, and the first double-sided adhesive is disposed on the second double-sided adhesive. The first brightness enhancement film and the second brightness enhancement film are respectively adhered to the first double-sided adhesive through the first ear and the second ear, and the third ear of the second diffusion film is adhered to the second double-sided adhesive.
[0008] Furthermore, the thickness of both the first and second double-sided adhesive tapes is between 0.01cm and 0.1cm.
[0009] Furthermore, the projected outlines of the first ear, the second ear, and the third ear do not overlap in the vertical direction, and the first ear and the second ear are arranged adjacent to each other in the horizontal direction.
[0010] Furthermore, the area of the first double-sided adhesive is smaller than the area of the second double-sided adhesive.
[0011] Furthermore, the structural frame is also provided with a light-shielding sticker, which is attached to the structural frame and the first diffusion film respectively.
[0012] Optionally, the first ear portion, the second ear portion, and the third ear portion are respectively distributed on both sides of the first brightness enhancement film, the second brightness enhancement film, and the second diffusion film.
[0013] Optionally, one side of the structural frame is provided with a U-shaped bend, and the black and white light-blocking adhesive is connected to the inner wall of the bend.
[0014] Optionally, the black and white light-blocking adhesive, the first double-sided adhesive, and the second double-sided adhesive are integrally molded.
[0015] Another technical solution adopted by this application to solve the technical problem is as follows: a backlight module, including the laptop film material anti-displacement structure as described above.
[0016] Compared with existing technologies, this application, by providing protruding first ears, second ears, and third ears on the first brightness enhancement film, the second brightness enhancement film, and the second diffusion film respectively, and simultaneously attaching them to the adhesive layer on the black and white light-blocking adhesive, makes the position of multiple film materials inside the backlight module more stable. This makes the film materials less prone to deviation during product drop tests and transportation, thereby improving the product's resilience. The outward-extending ears on the film materials ensure that most areas remain unaffected after the film materials are firmly attached. Attached Figure Description
[0017] Figure 1 This is a front view of a laptop film material anti-displacement structure according to an embodiment of this application; Figure 2 This is a cross-sectional view of a laptop film material anti-displacement structure according to an embodiment of this application; Figure 3 yes Figure 1 A magnified view of a portion of point A in the middle; Figure 4 yes Figure 1 A magnified view of a portion of point B in the middle; Figure 5 yes Figure 3 A cross-sectional view along the CC axis; Figure 6 yes Figure 4 A schematic cross-sectional view of the middle DD; Figure 7 yes Figure 2 A magnified view of a portion of point E in the middle.
[0018] Explanation of reference numerals in the attached figures: 10. Structural frame; 11. Bending section; 20. Black and white light-blocking adhesive; 21. First double-sided adhesive; 22. Second double-sided adhesive; 30. Membrane material; 31. First diffusion film; 32. First brightness enhancement film; 321. First ear; 33. Second brightness enhancement film; 331. Second ear; 34. Second diffusion film; 341. Third ear; 40. Light-blocking sticker. Detailed Implementation
[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0020] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. 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 indicated technical features. 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, unless otherwise stated, "a plurality of" means two or more.
[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0022] The term "laptop" in this application refers to laptops or similar tablet devices. Traditional laptop backlights use a frame-and-ear design on the backlight material to prevent displacement. During drop tests, a certain percentage of the backlight material shifts, causing bright lines at the tail of the backlight module and resulting in poor display quality. Furthermore, as living standards improve, users' demands for laptop screens have also increased. Bezels are becoming increasingly narrow, and users have stricter requirements for the viewing area. The existing frame-and-ear design on both sides of the backlight material results in a different display effect at the frame-and-ear locations compared to other areas, leading to poorer display quality.
[0023] In order to solve the above problems, such as Figure 1 and Figure 2 As shown, this application proposes a structure to prevent the displacement of a laptop film material, including a structural frame 10 with a receiving cavity in the middle, and also including a black and white light-blocking adhesive 20 and a film material 30. The black and white light-blocking adhesive 20 is disposed on one side of the receiving cavity, and an adhesive layer is provided on the black and white light-blocking adhesive 20. The black and white light-blocking adhesive 20 is a double-sided adhesive tape with PET as the substrate, widely used in the field of electronic display manufacturing, such as fixing the backlight frame of laptops, mobile phones, GPS and other devices. It is made by a double-sided coating process, with a black side light-blocking rate of over 99.9% to block light, and a white side reflectivity of over 88% to optimize the display effect. Specifically, the structural frame 10 is a rectangular disc with a recessed center forming a cavity for accommodating the film material 30 and other components. The bottom of the structural frame 10 has an inwardly folded, U-shaped bend 11. Black and white light-blocking adhesive 20 is disposed on the inner wall of the bend 11 to increase the cleanliness of the backlight module and facilitate further processing of the backlight module. Specifically, the black and white light-blocking adhesive 20 is disposed on the top surface of the inner wall of the bend 11 and extends towards the cavity. The adhesive part is disposed on the outwardly extending black and white light-blocking adhesive 20. In addition, the interior of the bend 11 can protect the film material 30 or components such as LED beads, reducing the product defect rate.
[0024] like Figure 3 and Figure 4As shown, the film material 30 includes a first diffusion film 31, a first brightness enhancement film 32, a second brightness enhancement film 33, and a second diffusion film 34 stacked sequentially from top to bottom. The first brightness enhancement film 32 has a first ear 321 extending outwards on its lower side, the second brightness enhancement film 33 has a second ear 331 extending outwards on its lower side, and the second diffusion film 34 has a third ear 341 extending outwards on its lower side. The first ear 321, the second ear 331, and the third ear 341 are all adhered to the adhesive layer. It can be understood that the diffusion film, through its uneven surface structure, causes light to refract, reflect, and scatter, converting the point or line light generated by the light guide plate or light source into a surface light source, thereby eliminating the brightness difference caused by uneven light source distribution and improving the uniformity of the displayed image. The brightness enhancement film, through its microprism structure, changes the direction of light propagation, compressing the light originally scattered in all directions into a 70° angle range, significantly enhancing the brightness of the front surface. By stacking multiple film materials 30 sequentially, the luminous effect of the backlight is effectively improved.
[0025] Specifically, the first ear portion 321, the second ear portion 331, and the third ear portion 341 all extend towards the side close to the black and white light-blocking adhesive 20, and are all rectangular. The ear portions of the multiple membrane materials 30 are all attached to the adhesive layer on the black and white light-blocking adhesive 20, thereby improving the stability of each membrane material 30 and preventing the membrane material 30 from shifting.
[0026] In this embodiment, such as Figure 5 , Figure 6 and Figure 7 As shown, the adhesive layer includes a first double-sided adhesive 21 and a second double-sided adhesive 22. The second double-sided adhesive 22 is disposed on the black and white light-blocking adhesive 20, and the first double-sided adhesive 21 is disposed on the second double-sided adhesive 22. The first brightness-enhancing film 32 and the second brightness-enhancing film 33 are respectively adhered to the first double-sided adhesive 21 via the first ear portion 321 and the second ear portion 331. The third ear portion 341 of the second diffusion film 34 is adhered to the second double-sided adhesive 22. By adhering each film material 30 to the adhesive layer, it is more securely disposed in the structural frame 10, preventing the film material 30 from shifting. Simultaneously, from top to bottom, a first double-sided adhesive 21, a second double-sided adhesive 22, and a black and white light-blocking adhesive 20 are stacked, their height matching the stacked membrane material 30. Among the first diffusion film 31, first brightness-enhancing film 32, second brightness-enhancing film 33, and second diffusion film 34 arranged from top to bottom, the middle layers of the first brightness-enhancing film 32 and second brightness-enhancing film 33 are connected to the first double-sided adhesive 21, and the bottom layer of the second diffusion film 34 is connected to the second double-sided adhesive 22, ensuring the feasibility of adhesion and making it more stable. Specifically, the black side of the black and white light-blocking adhesive 20 faces the side closest to the membrane material 30.
[0027] In some embodiments, the thickness of both the first double-sided adhesive 21 and the second double-sided adhesive 22 is between 0.01 cm and 0.1 cm. Preferably, the thickness of the first double-sided adhesive 21 is 0.08 cm and the thickness of the second double-sided adhesive 22 is 0.03 cm, so as to better match the thickness of the film material 30.
[0028] like Figure 3 As shown, Figure 3 and Figure 4 As shown, the projected outlines of the first ear portion 321, the second ear portion 331, and the third ear portion 341 in the vertical direction do not overlap, and the first ear portion 321 and the second ear portion 331 are arranged adjacent to each other in the horizontal direction. That is, the first ear portion 321, the second ear portion 331, and the third ear portion 341 are staggered. In a top view, the third ear portion 341 is located on the outermost side, and the first ear portion 321 and the second ear portion 331 are located on the same side to facilitate simultaneous adhesion to the first double-sided adhesive 21.
[0029] In some embodiments, the area of the first double-sided adhesive 21 is smaller than the area of the second double-sided adhesive 22. The area of the first double-sided adhesive 21 is slightly larger than the sum of the areas of the first ear portion 321 and the second ear portion 331.
[0030] In some embodiments, the structural frame 10 is further provided with a light-shielding sticker 40, which is bonded to both the structural frame 10 and the first diffusion film 31. The light-shielding sticker 40 is located on the top layer, and its light-shielding side is adhesive. It is used to bond both the structural frame 10 and the first diffusion film 31, thus fixing the position of the first diffusion film 31 through adhesion and preventing it from shifting.
[0031] In some embodiments, the first ear portion 321, the second ear portion 331, and the third ear portion 341 are respectively distributed opposite to each other on both sides of the first brightness enhancement film 32, the second brightness enhancement film 33, and the second diffusion film 34. The simultaneous bonding and connection on both sides can more effectively prevent displacement of the film material 30. It can be understood that the first ear portion 321 is distributed opposite to each other on the first brightness enhancement film 32, the second ear portion 331 is distributed opposite to each other on the second brightness enhancement film 33, and the third brightness enhancement film is distributed opposite to each other on the third ear portion 341. Similarly, the first double-sided adhesive 21 and the second double-sided adhesive 22 are also distributed opposite to each other on both sides of the black and white light-blocking adhesive 20.
[0032] In some embodiments, the black and white light-blocking adhesive 20, the first double-sided adhesive 21, and the second double-sided adhesive 22 are integrally molded. Specifically, the black and white light-blocking adhesive 20, the first double-sided adhesive 21, and the second double-sided adhesive 22 are pre-bonded together, and then, as a whole, are precision-cut in one go using the same mold, thereby ensuring the bonding accuracy.
[0033] Another aspect of this application proposes a backlight module, including the laptop film material anti-displacement structure described above. The backlight module has all the beneficial effects described above. By providing protruding first ears, second ears, and third ears on the first brightness enhancement film, the second brightness enhancement film, and the second diffusion film, respectively, and simultaneously attaching them to the adhesive layer on the black and white light-blocking adhesive, the position of the multiple film materials inside the backlight module is more stable, making the film materials less prone to deviation during product drop tests and transportation, thereby improving the product's resilience. The outwardly extending ears on the film materials ensure that most areas remain unaffected after the film materials are securely attached.
[0034] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A structure for preventing displacement of a laptop film material, comprising a structural frame, wherein a receiving cavity is provided in the middle of the structural frame, characterized in that, Also includes: Black and white light-blocking adhesive, wherein the black and white light-blocking adhesive is disposed on one side of the receiving cavity, and the black and white light-blocking adhesive is provided with an adhesive layer; The membrane material includes a first diffusion film, a first brightness enhancement film, a second brightness enhancement film, and a second diffusion film stacked sequentially from top to bottom; A first brightness enhancement film has a first ear extending outward on its lower side, a second brightness enhancement film has a second ear extending outward on its lower side, and a third ear extending outward on its lower side. The first ear, the second ear, and the third ear are all adhered to the adhesive layer.
2. The anti-displacement structure for laptop film material according to claim 1, characterized in that, The adhesive layer includes a first double-sided adhesive and a second double-sided adhesive. The second double-sided adhesive is disposed on the black and white light-blocking adhesive, and the first double-sided adhesive is disposed on the second double-sided adhesive. The first brightness enhancement film and the second brightness enhancement film are respectively adhered to the first double-sided adhesive through the first ear and the second ear, and the third ear of the second diffusion film is adhered to the second double-sided adhesive.
3. The anti-displacement structure for laptop film material according to claim 2, characterized in that, The thickness of both the first and second double-sided adhesive tapes is between 0.01cm and 0.1cm.
4. The anti-displacement structure for laptop film material according to claim 1, characterized in that, The projected outlines of the first ear, the second ear, and the third ear do not overlap in the vertical direction, and the first ear and the second ear are arranged adjacent to each other in the horizontal direction.
5. The anti-displacement structure for laptop film material according to claim 2, characterized in that, The area of the first double-sided tape is smaller than the area of the second double-sided tape.
6. The anti-displacement structure for laptop film material according to claim 1, characterized in that, The structural frame is also provided with a light-shielding sticker, which is attached to the structural frame and the first diffusion film respectively.
7. The anti-displacement structure for laptop film material according to claim 1, characterized in that, The first ear portion, the second ear portion, and the third ear portion are respectively distributed on both sides of the first brightness enhancement film, the second brightness enhancement film, and the second diffusion film.
8. The anti-displacement structure for laptop film material according to claim 1, characterized in that, One side of the structural frame is provided with a U-shaped bend, and the black and white light-blocking adhesive is connected to the inner wall of the bend.
9. The anti-displacement structure for laptop film material according to claim 2, characterized in that, The black and white light-blocking adhesive, the first double-sided adhesive, and the second double-sided adhesive are integrally molded.
10. A backlight module, characterized in that, Including the anti-displacement structure for laptop film as described in any one of claims 1-9.