Display middle frame and display equipment

Abstract

The utility model discloses a displayer middle frame and a display device, the displayer middle frame is formed by connecting a plurality of frame strips, each frame strip comprises an inner frame face facing the center of the displayer middle frame and a visual face adjacent to the inner frame face, and the visual face is used for facing the display direction of a displayer. The inner frame face is provided with a groove used for being embedded with the edge of an optical film, the groove extends in the length direction of the frame strip, the inner wall of the groove is provided with a receding part sunken towards the visible face, and the receding part is connected with the inner frame face. By means of the structure, abnormal protruding areas caused by process problems and material expansion are avoided, the optical film cannot be abraded when the optical film and the middle frame move relatively to generate friction, the original surface quality of the optical film is kept, and therefore the product quality is improved, and the display grade of a displayer is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of display production, in particular to a middle frame of a display and a display device. Background Art

[0002] In the prior art, in a display, especially a display using an optical film, the optical film is located between a light bar and an OC. To ensure the distance between the optical film and the two, a middle frame is generally used to limit the position movement of the optical film. However, due to process limitations, when the optical film contacts the middle frame, it is easy to cause errors due to production processes or material expansion, resulting in relative movement between the optical film and the middle frame, which will scratch the optical film, especially the side close to the visible part of the display, and after scratching, white dots are easily seen on the display, affecting the product quality. Summary of the Utility Model

[0003] An embodiment of the utility model provides a middle frame of a display and a display device, aiming at solving the problem that in the prior art, the optical film and the middle frame of the display are prone to abnormal contact due to process errors, which will scratch the optical film when relative movement occurs between the optical film and the middle frame.

[0004] In a first aspect, the utility model provides a middle frame of a display, which is composed of a plurality of border strips connected to each other. The border strip includes an inner frame surface facing the center of the middle frame of the display and a visible surface adjacent to the inner frame surface. The visible surface is used to face the display direction. A groove for fitting the edge of the optical film is provided on the inner frame surface. The groove extends along the length direction of the border strip, and a relief portion recessed towards the visible surface is provided on the inner wall of the groove. The relief portion is connected to the inner frame surface.

[0005] In the middle frame of the display provided by the utility model, the border strip further includes a glue inlet surface arranged back-to-back with the inner frame surface. A plurality of glue inlet points are provided on the glue inlet surface. There are a plurality of relief portions, and the relief portions and the glue inlet points are arranged corresponding to each other along the length direction of the border strip.

[0006] In the middle frame of the display provided by the utility model, the border strip further includes a back plate surface arranged opposite to the visible surface. The inner wall of the groove includes a first inner wall surface and a second inner wall surface arranged opposite to each other. The first inner wall surface is close to the visible surface, and the second inner wall surface is close to the back plate surface. The relief portion is arranged on the first inner wall surface.

[0007] In the middle frame of the display provided by the utility model, the distance from the second inner wall surface to the back plate surface is less than the distance from the first inner wall surface to the visible surface.

[0008] In the middle frame of the display provided by the present utility model, a base surface is provided on the first inner wall surface, the base surface is adjacent to the avoidance portion, the avoidance portion includes a buffer surface and an avoidance surface, one side of the avoidance surface is connected to the inner frame surface, and the other side is connected to the base surface through the buffer surface.

[0009] In the middle frame of the display provided by the present utility model, the thickness difference between the avoidance surface and the base surface is not less than 0.2 mm.

[0010] In the middle frame of the display provided by the present utility model, an attachment for reducing the surface friction coefficient is attached to the first inner wall surface and / or the second inner wall surface.

[0011] In the middle frame of the display provided by the present utility model, the plurality of glue injection points and the avoidance portions are arranged at equal intervals along the length direction of the frame strip.

[0012] In the middle frame of the display provided by the present utility model, combined structures are further provided at both ends of the frame strip along the length direction, and the combined structures can be connected and locked with each other.

[0013] In a second aspect, the present utility model provides a display device, including the middle frame of the display as described above.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] In the technical solution of the present utility model, by providing an avoidance portion connected to the inner frame surface on the inner wall of the groove for fitting the optical film on the inner frame surface of the frame strip of the middle frame of the display, abnormal convex areas caused by process problems and material expansion are avoided, so that when the optical film and the middle frame move relative to each other and generate friction, the optical film will not be scratched, and the original surface quality of the optical film is maintained, thereby improving the product quality and enhancing the display taste of the display. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0017] Figure 1 A three-dimensional schematic diagram of the display device according to the embodiment of the present utility model;

[0018] Figure 2 A cross-sectional schematic diagram of the display device under the prior art;

[0019] Figure 3Cross-sectional view a of the frame bar of the middle frame of the display according to an embodiment of the present utility model;

[0020] Figure 4 Cross-sectional view a of the frame bar of the middle frame of the display in an assembled state according to an embodiment of the present utility model;

[0021] Figure 5 Three-dimensional view of the frame bar of the middle frame of the display according to an embodiment of the present utility model;

[0022] Figure 6 Cross-sectional view b of the frame bar of the middle frame of the display according to an embodiment of the present utility model;

[0023] Figure 7 Partial enlarged view A of cross-sectional view b of the frame bar of the middle frame of the display according to an embodiment of the present utility model;

[0024] Explanation of figure markings:

[0025] 1. Display screen; 3. Optical film; 4. Rear case; 5. Light bar;

[0026] 2. Middle frame of the display; 21. Frame bar; 22. Inner frame surface; 221. Inner wall surface of the groove; 222. First inner wall surface; 223. Second inner wall surface; 224. Avoidance part; 225. Buffer surface; 226. Avoidance surface; 23. Glue inlet surface; 231. Glue inlet point; 24. Visible surface; 25. Back plate surface; 27. Male connection end; 28. Female connection end. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0029] The present utility model discloses a middle frame 2 of a display. The middle frame 2 of the display is composed of a plurality of border strips 21 connected to each other. The border strip 21 includes an inner frame surface 22 facing the center of the middle frame 2 of the display and a visible surface 24 adjacent to the inner frame surface 22. The visible surface 24 is used to face the display direction of the display. A groove for fitting the edge of the optical film 3 is provided on the inner frame surface 22. The groove extends along the length direction of the border strip 21. A displacement avoidance portion 224 recessed towards the visible surface 24 is formed on the inner wall of the groove. The displacement avoidance portion 224 is connected to the inner frame surface 22. Refer to Figures 1 to 7 In a display, especially in a display screen 1 using a liquid crystal display screen 1, if the contact between the optical film 3 and the middle frame 2 of the display responsible for carrying and limiting the optical film 3 is improper, it may cause the film to be scratched, thereby affecting the clarity of the image presented by the display and the viewing quality of the user. When the optical film 3 is scratched or worn, it will directly reduce the display quality of the display screen 1. This situation is particularly obvious in vibration and shock tests. If this situation occurs in vibration and shock tests, it often means that the optical film 3 will also be scratched or worn when the display product is transported subsequently. This will cause uncontrollable self-wear of the liquid crystal display screen 1 product after it is packaged and shipped from the factory, resulting in obvious visible defects when the user uses the liquid crystal display screen 1 after it is sold to the user. For example, visible white dot or stripe defects caused by the optical film 3 being scratched or worn can be seen from the front, affecting the user's viewing experience. Among them, part of the reason for this situation is that during the plastic molding process of the border strip 21 that makes up the middle frame 2 of the display, due to the relatively large pressure around the gate point 231, an abnormal protrusion area that bulges on the surface of the border strip 21 due to uneven pressure is likely to be generated near the gate point 231. Among them, the abnormal protrusion area close to the optical film 3 may directly rub against the optical film 3, causing the optical film 3 to be scratched or worn. To solve this situation, in the embodiment of the present utility model, a groove is opened on the inner frame surface 22 of the border strip 21 of the middle frame 2 of the display facing the center of the middle frame 2 of the display. The groove is used to accommodate the edge of the optical film 3 to support and limit the optical film 3. Among them, a displacement avoidance portion 224 is formed on the inner wall of the groove. The side of the border strip 21 that can be seen or is close to the display screen 1 during use is called the visible surface 24, and the side close to the back shell 4 is called the back plate surface 25. Generally speaking, it is easier to generate the aforementioned defects when the side of the optical film 3 close to the visible surface 24 is scratched. Therefore, the displacement avoidance portion 224 is formed on the inner wall of the groove on the side close to the visible surface 24. The displacement avoidance portion 224 recesses from the inner wall of the groove towards the visible surface 24, so that there is a certain gap between the area where the abnormal protrusion area may be generated and the optical film 3. Even if an abnormal protrusion area appears in the area where the displacement avoidance portion 224 is located during the production of the border strip 21, it will not directly contact the side of the optical film 3 close to the visible surface 24 and scratch the optical film 3.

[0030] Compared with the prior art, in the utility model, a relief portion 224 connected to the inner frame surface 22 is provided on the inner wall of the groove for fitting the optical film 3 on the inner frame surface 22 of the frame strip 21 of the middle frame 2 of the display, thereby avoiding abnormal protrusion areas due to process problems and material expansion, preventing the optical film 3 from being scratched when the optical film 3 and the middle frame move relatively and generate friction, maintaining the original surface quality of the optical film 3, and thus improving the product quality and enhancing the display taste of the display.

[0031] In one embodiment, referring to Figure 5 , the frame strip 21 further includes a glue inlet surface 23 arranged back-to-back with the inner frame surface 22. A plurality of glue inlet points 231 are provided on the glue inlet surface 23. There are a plurality of relief portions 224, and the relief portions 224 and the glue inlet points 231 are arranged corresponding to each other along the length direction of the frame strip 21. Optimize the frame strip 21 from the process, and use the surface arranged opposite to the inner frame surface 22 as the glue inlet surface 23. Generally, this surface does not cooperate with other components on the display during the assembly of the display, so using this surface as the glue inlet surface 23 will not affect the assembly accuracy of the display. And because the glue inlet surface 23 is arranged opposite to the inner frame surface 22 provided with the groove, it makes the frame strip 21 easier to demold during plastic molding, thereby improving the production efficiency. The plurality of glue inlet points 231 on the glue inlet surface 23 are used for injecting glue, which can ensure the stability and integrity of the frame strip 21 and enhance the overall strength of the frame strip 21 and the middle frame 2 of the display constituted by the frame strip 21. The glue inlet points 231 and the relief portions 224 are arranged corresponding to each other along the length direction of the frame strip 21, which can ensure that a relief portion 224 is provided at the position where each glue inlet point 231 is aligned with a possible abnormal protrusion area, making the structural arrangement of the relief portions 224 more reasonable.

[0032] In one embodiment, referring to Figure 3 and Figure 4 , the frame strip 21 further includes a back plate surface 25 arranged opposite to the visible surface 24. The inner wall of the groove includes a first inner wall surface 222 and a second inner wall surface 223 arranged opposite to each other. The first inner wall surface 222 is close to the visible surface 24, and the second inner wall surface 223 is close to the back plate surface 25. The relief portion 224 is provided on the first inner wall surface 222. Since the optical film 3 may be composed of a combination of multiple film bodies, for example, composed of an optical film 3 such as a filter film, a reflective film or a refractive film, etc., the combination of the optical film 3 has a certain thickness. In order to better fit the optical film 3 into the groove for use and provide a space for fitting the optical film 3, a first inner wall surface 222 and a second inner wall surface 223 arranged opposite to each other are provided in the groove. Among them, the first inner wall surface 222 is close to the visible surface 24, which is convenient for the positioning and fixing of the optical film 3, and the second inner wall surface 223 is close to the back plate surface 25, increasing the stability of the overall structure.

[0033] In one embodiment, referring to Figure 2 、 Figure 3 andFigure 4 , the distance from the second inner wall surface 223 to the back plate surface 25 is less than the distance from the first inner wall surface 222 to the visible surface 24. The visible surface 24 of the frame strip 21 needs to be assembled in cooperation with the display screen 1. Since the display screen 1 has a certain weight, it will cause the frame strip 21 to deform. To a certain extent, it will also cause abnormal convex areas on the first inner wall surface 222 due to the overall deformation of the frame strip 21, resulting in friction with the surface of the optical film 3 close to the visible surface 24, leading to the problem of scratching the optical film 3. To avoid this situation as much as possible, it is necessary to differentiate the distance from the inner wall surface 221 of the groove to the surface arranged opposite to it. Designing the distance from the first inner wall surface 222 to the visible surface 24 to be greater than the distance from the second inner wall surface 223 to the back plate surface 25 can strengthen the structural strength between the first inner wall surface 222 and the visible surface 24, reduce the deformation of the frame strip 21, and ensure the stability of the optical film 3 on the visible surface 24. At the same time, increasing the distance between the first inner wall surface 222 and the visible surface 24 also helps to balance the pressure when injecting glue at the glue injection point 231, reduce the pressure difference in adjacent areas, and reduce the internal stress of the formed frame strip 21. This layout method improves the rationality of the overall structure of the middle frame 2 of the display, and helps to improve the service life and performance of the display.

[0034] In one embodiment, referring to Figure 3 , Figure 4 and Figure 7, a base surface is provided on the first inner wall surface 222. The base surface is adjacent to the avoidance portion 224. The avoidance portion 224 includes a buffer surface 225 and an avoidance surface 226. One side of the avoidance surface 226 is connected to the inner frame surface 22, and the other side is connected to the base surface through the buffer surface 225. In actual use, it is found that if only the avoidance portion 224 is provided and the joint between the avoidance portion 224 and the first inner wall surface 222 is approximately a right angle, it is easy to occur interference when assembling the optical film 3 and the frame strip 21, resulting in the optical film 3 not being able to be installed or the edge being damaged, and then debris being generated in the product. Or burrs are likely to appear at the joint between the avoidance portion 224 and the first inner wall surface 222 during the molding process of the frame strip 21, resulting in the frame strip 21 needing to be further cleaned before use, making the production process cumbersome. Therefore, the technical solution of this embodiment is made to solve the above problems. A base surface is provided on the first inner wall surface 222. The so-called base surface refers to the ideal planar area on the first inner wall surface 222. The base surface is adjacent to the avoidance portion 224. A buffer surface 225 and an avoidance surface 226 are provided on the avoidance portion 224. The base surface is connected to the buffer surface 225. One side of the avoidance surface 226 is connected to the inner frame surface 22, and the other side is connected to the base surface through the buffer surface 225. By providing the buffer surface 225, the joint between the avoidance portion 224 and the first inner wall surface 222 becomes smoother. While avoiding burrs during the production process, it also helps to reduce stress concentration caused by material expansion or other factors, preventing structural damage. In particular, when the display is in use, since the internal components of the display operate and generate heat, the buffer surface 225 also helps to absorb and relieve the stress caused by factors such as thermal expansion and contraction, protecting the middle frame 2 and the optical film 3 of the display.

[0035] In one embodiment, referring to Figure 4 , the thickness difference between the avoidance surface 226 and the base surface is not less than 0.2 mm. Taking Figure 4 as an example, in order to ensure that the avoidance portion 224 provided on the frame strip 21 can fully avoid the occurrence of abnormal protrusion areas, it is necessary to determine the minimum thickness difference between the avoidance surface 226 and the base surface as a guide in the actual production process. According to multiple experiments, it is found that when the thickness difference between the avoidance surface 226 and the base surface is not less than 0.2 mm, even if the injection pressure at the injection point 231 is greater during injection molding, and even if an abnormal protrusion area appears on the avoidance surface 226, it is not easy to come into contact with and generate friction with the optical film 3. At the same time, the thickness difference between the avoidance surface 226 and the base surface not less than 0.2 mm can also effectively relieve stress concentration caused by material expansion, contraction or installation errors, etc., thereby improving the durability and stability of the overall structure. Further, in order to ensure the structural strength of the frame strip 21, it is necessary to limit the thickness difference between the avoidance surface 226 and the base surface. Therefore, it is preferable that the thickness difference between the avoidance surface 226 and the base surface is 0.2 mm.

[0036] In one embodiment, an attachment for reducing the surface friction coefficient is attached to the first inner wall surface 222 and / or the second inner wall surface 223. To further reduce the friction between the middle frame 2 of the display and the optical film 3 and thus avoid the resulting secondary hazards, an attachment is provided on the first inner wall surface 222 and / or the second inner wall surface 223. The main function of the attachment is to reduce the friction coefficient between the inner wall surface 221 of the groove and the optical film 3 or other contact components, thereby reducing the friction. By reducing the friction, not only can the wear be reduced, but also the service life of the optical film 3 and other components can be improved. Specifically, the attachment can be made of a material with a low friction coefficient, such as polytetrafluoroethylene (PTFE), silicone, or other wear-resistant materials. When using an attachment with a certain elasticity, the protective performance of the middle frame for the optical film 3 can be further enhanced, making the display less likely to be damaged during transportation or testing. Further, the attachment can be fixed to the inner wall surface 221 of the groove through processes such as adhesion, coating, or hot pressing to ensure that it does not fall off during use. In particular, using an attachment that is heat-resistant and oxidation-resistant helps to maintain the long-term effect of reducing the friction coefficient and improve the life of the display.

[0037] In one embodiment, referring to Figure 5 and Figure 6 , a plurality of glue injection points 231 and relief portions 224 are arranged at equal intervals along the length direction of the frame strip 21. To further improve the structural stability of the middle frame 2 of the display after injection molding, a plurality of glue injection points 231 and relief portions 224 are arranged at equal intervals on the glue injection surface 23. The equal interval arrangement helps to evenly distribute the stress, so that the frame strip 21 is not easily bent under its own stress after injection molding, thus having good flatness, which is convenient for assembly and ensures the product quality. The evenly distributed glue injection points 231 at equal intervals can ensure that the glue is evenly distributed within the frame strip 21 during injection molding, thereby improving the injection molding effect, not easily appearing injection defects, and improving the product quality. Further, arranging the glue injection points 231 at equal intervals is also beneficial for the cooling of the injection-molded frame strip 21 of the injection-molded part, thereby shortening the manufacturing time required, improving the production efficiency, and reducing the production cost.

[0038] In one embodiment, referring to Figure 5 and Figure 6 . Both ends of the frame strip 21 along the length direction are also provided with a combination structure, and the combination structures can be connected and locked with each other. To more conveniently combine the frame strips 21 into the middle frame 2 of the display, a specially designed combination structure is provided at both ends of each frame strip 21 along the length direction, and these structures can be mutually engaged or locked, thereby connecting a plurality of frame strips 21 into a complete middle frame 2 of the display. Specifically, as Figure 5 and Figure 6As shown, male connection terminals 27 and female connection terminals 28 are respectively arranged at both ends of the border strip 21. The structures of the male connection terminal 27 and the female connection terminal 28 cooperate with each other and can be butted and locked in pairs to form the structure of the middle frame 2 of the display. The combined structure may include protrusions and grooves, snap fasteners or other locking mechanisms. The combination of these combined structures can ensure that the border strips 21 are firmly connected together during assembly to form a stable overall structure. The design of the locking connection also helps to prevent the border strips 21 from loosening or shifting during stress or use, ensuring the long-term stability of the display. Further, by providing the combined structure at both ends of each border strip 21, the use of connecting parts can be reduced, simplifying the assembly and disassembly processes of the middle frame and facilitating production manufacturing and later maintenance.

[0039] The present utility model also provides a display device, referring to Figure 1 , including the middle frame 2 of the display as above. An optical film 3 assembly is installed in the middle frame 2 of this display device, including an optical film 3 assembly composed of optical films 3 such as polarizing films, brightness enhancement films, diffusion films, etc., so as to ensure good display effects. The front part of the middle frame 2 of the display includes a display screen 1, and the display screen 1 can be of types such as a liquid crystal display screen 1, a light-emitting diode display screen 1 or an organic light-emitting diode display screen 1, etc., to provide clear images and rich colors. A light bar 5, also known as a backlight source, is further provided at the rear of the middle frame 2 of the display. The backlight source can be an LED backlight source, providing a light source support with high brightness and low energy consumption. A back shell 4 is further provided outside all the above structures to protect the internal components from external damage. Further, the display device is also equipped with a bracket or a wall mount for facilitating the placement and installation of the device. Using the display device disclosed by the present utility model optimizes the display effects and provides a high-performance and high-reliability display solution for users.

[0040] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A display middle frame, composed of a plurality of frame strips connected to each other, characterized in that: The border strip includes an inner frame surface facing the center of the middle frame of the display and a visible surface adjacent to the inner frame surface, wherein the visible surface is used to face the display direction of the display, and the inner frame surface is provided with a groove for engaging the edge of the optical film, wherein the groove extends along the length direction of the border strip, and an avoidance portion recessed toward the visible surface is provided on the inner wall of the groove, wherein the avoidance portion is connected to the inner frame surface.

2. The display middle frame according to claim 1, characterized in that: The frame strip also includes a glue feeding surface arranged back to back with the inner frame surface, and a plurality of glue feeding points are provided on the glue feeding surface. There are a plurality of avoidance parts, and the avoidance parts and the glue feeding points are arranged correspondingly along the length direction of the frame strip.

3. The display middle frame according to claim 2, characterized in that: The frame strip also includes a back panel surface arranged opposite to the visible surface, the inner wall of the groove includes a first inner wall surface and a second inner wall surface arranged opposite to each other, the first inner wall surface is close to the visible surface, the second inner wall surface is close to the back panel surface, and the avoidance portion is arranged on the first inner wall surface.

4. The display middle frame according to claim 3, characterized in that: The distance from the second inner wall surface to the back panel surface is smaller than the distance from the first inner wall surface to the visible surface.

5. The display middle frame according to claim 4, characterized in that: The first inner wall surface is provided with a base surface, the base surface is adjacent to the avoidance portion, the avoidance portion includes a buffer surface and an avoidance surface, one side of the avoidance surface is connected to the inner frame surface, and the other side is connected to the base surface through the buffer surface.

6. The display middle frame according to claim 5, characterized in that: The thickness difference between the avoidance surface and the base surface is not less than 0.2 mm.

7. The display middle frame according to claim 3, characterized in that: The first inner wall surface and / or the second inner wall surface is attached with attachments for reducing the surface friction coefficient.

8. The display middle frame according to claim 2, characterized in that: The multiple glue feeding points and avoidance parts are arranged equidistantly along the length direction of the frame strip.

9. The display middle frame according to any one of claims 1 to 8, characterized in that: Combination structures are also provided at both ends of the frame strip along the length direction, and the combination structures can be connected and locked with each other.

10. A display device comprising the display middle frame according to any one of claims 1 to 9.

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