Structure for preventing reflective film from being separated from rubber frame

Abstract

The utility model discloses a structure for preventing a reflective film from being separated from a rubber frame, an adhesion surface exists between the reflective film and the rubber frame, the prevention structure is arranged on the adhesion surface, and the prevention structure comprises an expansion edge which is arranged at the edge of the rubber frame and is used for increasing the distance between the edge of the reflective film in the horizontal direction and the surface of an fpc board; the friction surface is arranged between the reflecting film and the rubber frame and is arranged on the reflecting film and / or the rubber frame; according to the utility model, through the cooperation of the expansion edge and the friction surface, the adhesive force between the reflecting film and the rubber frame is increased, the warping probability of the reflecting film is reduced, specifically, before pressure is applied, the distance between the edge of the reflecting film in the horizontal direction and the surface of the fpc board is increased through the expansion edge, so that the probability that the fpc rubs the edge of the reflecting film is reduced, and the yield of the fpc board is improved. And then an external pressure maintaining device is directly guided to apply pressure to the reflecting film and the rubber frame, and after pressure is applied, the friction surface can increase the adhesion force between the reflecting film and the rubber frame.

Description

Technical Field

[0001] The utility model relates to the field of display screens, in particular to a structure for preventing a reflective film from detaching from a rubber frame. Background Art

[0002] TFT display screens not only have good display effects but also are economical in price, and are especially widely applied in consumer smart watches, smart bracelets, smart home appliances, electronic cigarette products, etc. As a cost-effective solution, the backlight of the TFT display module adopts a solution of a rubber frame + a reflective film as the bottom.

[0003] Typically, in the patent document with the application number CN201721655061.7, a mobile phone backlight assembly capable of preventing the reflective film from arching is disclosed. In the backlight assembly in this patent document, at the four corners where the reflective film is attached to the rubber frame, exhaust ports are formed through double-sided tapes, so that the inside and outside of the reflective film and the rubber frame are kept in communication, and the air inside can be smoothly discharged. In this way, regardless of thermal expansion and contraction, the pressure balance inside and outside the reflective film can be maintained, and the reflective film can be kept flat, which avoids the occurrence of the film arching phenomenon and also avoids the generation of wrinkles.

[0004] The backlight assembly disclosed in the above patent document is a structure of a rubber frame + a reflective film. At the same time, the problem of the film arching phenomenon is solved through the provided technical solution. However, there are still some limitations in actual use, specifically as follows: The existing TFT module structure is as Figure 1 shown. The shipping method of the TFT module is to bend the FPC of the main screen and stick it to the back of the backlight. The reflective film is attached to the backlight rubber frame and serves as the bottom of the backlight. During the use of the module, the FPC is prone to rubbing against the edge of the reflective film, resulting in the phenomenon that the reflective film detaches from the rubber frame, that is, the reflective film warps up. Summary of the Utility Model

[0005] Based on this, it is necessary to provide a structure for preventing a reflective film from detaching from a rubber frame in view of the above technical problems.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A structure for preventing a reflective film from detaching from a rubber frame, there is an adhesion surface between the reflective film and the rubber frame, and the prevention structure is arranged on the adhesion surface. The prevention structure includes:

[0008] An extended edge, arranged at the edge of the rubber frame, for increasing the distance between the edge of the reflective film in the horizontal direction and the surface of the FPC board;

[0009] A friction surface, arranged between the reflective film and the rubber frame, and arranged on the reflective film and / or the rubber frame; by pressing the reflective film and the rubber frame, the friction surface can increase the adhesion force between the reflective film and the rubber frame.

[0010] Further, the extended edge is integrally formed with the glue frame to increase the size of the glue frame.

[0011] Further, the friction surface includes a plurality of raised platforms arranged on the surface of the glue frame. All the raised platforms are arranged in an array along the surface of the glue frame and are connected in sequence to form a continuous strip surface, so as to increase the friction force of the friction surface to increase the adhesion force.

[0012] Further, the continuous strip surface is wavy to reduce the chance of warping.

[0013] Further, the friction surface further includes a plurality of limiting grooves arranged on the surface of the reflective film. Each raised platform is correspondingly arranged with each limiting groove to further increase the friction force.

[0014] Further, the friction surface further includes a plurality of limiting bosses arranged on the surface of the reflective film. The gap between each limiting boss and each limiting groove is correspondingly arranged.

[0015] Further, a scratch-proof surface is arranged at the edge of the reflective film to reduce the contact amount between the fpc and the edge of the reflective film.

[0016] Further, the prevention structure further includes a plurality of anti-arching holes arranged on the reflective film for discharging the gas at the adhesion surface to prevent the generation of film arching.

[0017] Further, the anti-arching hole includes a depression with a funnel-shaped longitudinal section, and the gas at the adhesion surface can be discharged at the funnel intersection of the depression.

[0018] Further, the depression is arranged in the middle area of the surface of the reflective film.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] In the utility model, through the cooperation of the extended edge and the friction surface, the adhesion force between the reflective film and the glue frame can be increased, and the chance of warping of the reflective film can be reduced. Specifically, before pressing, by the extended edge, the distance between the edge of the reflective film in the horizontal direction and the surface of the fpc board is increased, so as to reduce the chance of the fpc scraping the edge of the reflective film, and then directly guide the external pressure maintaining device to press the reflective film and the glue frame. After pressing, the friction surface can increase the adhesion force between the reflective film and the glue frame.

[0021] To increase the friction force, it can be through a plurality of limiting grooves arranged on the surface of the reflective film, or it can also be through a plurality of limiting bosses arranged on the surface of the reflective film to cooperate with the raised platforms, so as to further reduce the chance of the reflective film detaching. Brief Description of the Drawings

[0022] Figure 1 Schematic diagram of the structure of the FPC provided by the prior art when it is to be shipped

[0023] Figure 2 Schematic diagram of the extended edge structure provided by the present utility model

[0024] Figure 3 Schematic diagram of the reflective film structure provided by the present utility model

[0025] Figure 4 For Figure 3 Schematic diagram of the structure at position A provided

[0026] Figure 5 Schematic diagram of the limiting groove structure provided by the present utility model

[0027] Figure 6 Schematic diagram of the limiting boss structure provided by the present utility model

[0028] Figure 7 Schematic diagram of the anti-arching hole structure provided by the present utility model

[0029] The markings in the figure are explained as follows:

[0030] 1. Reflective film; 2. Glue frame; 3. Extended edge; 4. Friction surface; 5. Raised platform; 6. Limiting groove; 7. Limiting boss; 8. Anti-scratch surface; 9. Anti-arching hole; 10. Depression Specific embodiments

[0031] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model

[0032] As described in the background art, there is an existing TFT module structure as Figure 1 shown. The shipping method of the TFT module is to bend the FPC of the main screen and stick it on the back of the backlight. The reflective film is pasted on the backlight glue frame and serves as the bottom of the backlight. During the use of the module, the FPC is prone to rubbing against the edge of the reflective film, resulting in the phenomenon that the reflective film comes off from the glue frame, that is, the problem of the reflective film warping

[0033] To solve this technical problem, the present utility model provides a structure for preventing the reflective film from detaching from the glue frame

[0034] Specifically, please refer to Figures 1 - 7, a structure for preventing the reflective film from detaching from the rubber frame. There is an adhesive surface between the reflective film 1 and the rubber frame 2. The prevention structure is arranged on the adhesive surface, and the prevention structure includes: an extended edge 3, arranged at the edge of the rubber frame 2 for increasing the distance between the edge of the reflective film 1 in the horizontal direction and the surface of the fpc board; a friction surface 4, arranged between the reflective film 1 and the rubber frame 2 and arranged on the reflective film 1 and / or the rubber frame 2. By applying pressure to the reflective film 1 and the rubber frame 2, the friction surface 4 can increase the adhesive force between the reflective film 1 and the rubber frame 2.

[0035] In the present utility model, through the cooperation of the extended edge 3 and the friction surface 4, the adhesive force between the reflective film 1 and the rubber frame 2 can be increased, reducing the probability of the reflective film warping. Specifically, before applying pressure, the distance between the edge of the reflective film 1 in the horizontal direction and the surface of the fpc board is increased through the extended edge 3, thereby reducing the probability of the fpc rubbing against the edge of the reflective film 1. Then, directly guide the external pressure maintaining device to apply pressure to the reflective film 1 and the rubber frame 2. After applying pressure, the friction surface 4 can increase the adhesive force between the reflective film 1 and the rubber frame 2.

[0036] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings.

[0037] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0039] Please refer to Figures 1 - 4 , a structure for preventing the reflective film from detaching from the rubber frame. There is an adhesive surface between the reflective film 1 and the rubber frame 2. The prevention structure is arranged on the adhesive surface, and the prevention structure includes:

[0040] An extended edge 3, arranged at the edge of the rubber frame 2 for increasing the distance between the edge of the reflective film 1 in the horizontal direction and the surface of the fpc board;

[0041] A friction surface 4, arranged between the reflective film 1 and the rubber frame 2 and arranged on the reflective film 1 and / or the rubber frame 2. By applying pressure to the reflective film 1 and the rubber frame 2, the friction surface 4 can increase the adhesive force between the reflective film 1 and the rubber frame 2.

[0042] The friction surface 4 can be arranged on the reflective film 1; or arranged on the rubber frame 2; or arranged on both the reflective film 1 and the rubber frame 2 simultaneously.

[0043] In the present utility model, the adhesion force between the reflective film 1 and the rubber frame 2 can be increased through the cooperation of the extended edge 3 and the friction surface 4, reducing the probability of the reflective film warping. Specifically, before applying pressure, the distance between the edge of the reflective film 1 in the horizontal direction and the surface of the fpc board is increased through the extended edge 3, thereby reducing the probability of the fpc scraping the edge of the reflective film 1. Then, an external pressure maintaining device is directly guided to apply pressure to the reflective film 1 and the rubber frame 2. After applying pressure, the friction surface 4 can increase the adhesion force between the reflective film 1 and the rubber frame 2. In some specific embodiments, the extended edge 3 and the rubber frame 2 are integrally formed. Such a setting is equivalent to increasing the size of the rubber frame 2, making the edge of the reflective film 1 inside the edge of the rubber frame 2 when the reflective film 1 and the rubber frame 2 are adhered. The inner side here refers to taking the edge of the rubber frame 2 as a reference (the edge of the rubber frame 2 is circular), and the inside of the edge of the rubber frame 2 (circular) is the inner side.

[0044] The structure for preventing the separation of the reflective film and the rubber frame provided in Embodiment 1 is further optimized. The friction surface 4 includes a plurality of raised platforms 5 provided on the surface of the rubber frame 2. All the raised platforms 5 are arranged in an array on the surface of the rubber frame 2 and are connected in sequence to form a continuous strip surface.

[0045] In some specific embodiments, the continuous strip surface is wavy.

[0046] To increase the adhesion force, it is necessary to increase the frictional force of the friction surface 4. The ways to increase the frictional force are as follows: 1. Increase the roughness of the surface of the rubber frame 2; 2. Increase the adhesion force. To increase the adhesion force, a glue with greater viscosity can be selected, but mistakes cannot occur during fixation. Once a mistake occurs, the viscosity is likely to decrease. Therefore, mostly the roughness of the surface of the rubber frame 2 is increased, that is, a continuous strip surface is formed by a plurality of raised platforms 5 provided on the surface of the rubber frame 2. The continuous strip surface is wavy. Once the reflective film 1 and the rubber frame 2 are adhered, the frictional force can be increased through the continuous strip surface, and the probability of warping is low.

[0047] Please refer to Figure 5 For the structure for preventing the separation of the reflective film and the rubber frame provided in Embodiment 1 or 2, it is further optimized. The friction surface 4 further includes a plurality of limiting grooves 6 provided on the surface of the reflective film 1. Each raised platform 5 is correspondingly arranged with each limiting groove 6.

[0048] To further improve the frictional force, a plurality of limiting grooves 6 provided on the surface of the reflective film 1 are used to cooperate with the raised platforms 5, that is, each raised platform 5 is correspondingly arranged with each limiting groove 6. After the reflective film 1 and the rubber frame 2 are adhered, each raised platform 5 and each limiting groove 6 are adhesively connected correspondingly, further reducing the probability of the reflective film 1 detaching.

[0049] Please refer to Figure 6, the structure for preventing the reflection film from detaching from the rubber frame provided in the above embodiments is further optimized. The friction surface 4 further includes a plurality of limiting bosses 7 provided on the surface of the reflection film 1, and the gaps between each limiting boss 7 and each limiting groove 6 are correspondingly arranged.

[0050] In some specific embodiments, a scratch-proof surface 8 is provided at the edge of the reflection film 1 to prevent the fpc from contacting the edge of the reflection film 1.

[0051] To further increase the frictional force, for the reflection film 1, a plurality of limiting bosses 7 provided on the surface of the reflection film 1 can also be used to cooperate with the raised bosses 5, that is, the gaps between each limiting boss 7 and each limiting groove 6 are correspondingly arranged. After the reflection film 1 is adhered to the rubber frame 2, the gaps between each limiting boss 7 and each limiting groove 6 are correspondingly inserted, which can further reduce the probability of the reflection film 1 detaching.

[0052] Please refer to Figure 7 , the structure for preventing the reflection film from detaching from the rubber frame provided in the above embodiments is further optimized. The friction surface 4 includes a plurality of raised bosses 5 provided on the surface of the rubber frame 2, and all the raised bosses 5 are arranged in an array along the surface of the rubber frame 2 and are connected in sequence to form a continuous strip surface.

[0053] In some specific embodiments, the continuous strip surface is wavy.

[0054] To increase the adhesion force, it is necessary to increase the frictional force of the friction surface 4. The ways to increase the frictional force are: 1. Increase the roughness of the surface of the rubber frame 2; 2. Increase the adhesion force; to increase the adhesion force, a glue with greater viscosity can be selected, but mistakes cannot occur during fixation. Once a mistake occurs, it is easy to reduce the viscosity. Therefore, mostly, the roughness of the surface of the rubber frame 2 is increased, that is, a continuous strip surface is formed by a plurality of raised bosses 5 provided on the surface of the rubber frame 2. The continuous strip surface is wavy. Once the reflection film 1 is adhered to the rubber frame 2, the frictional force can be increased through the continuous strip surface, and the probability of warping is low.

[0055] The prevention structure further includes a plurality of anti-arching holes 9 provided on the reflection film 1 for discharging the gas at the adhesion surface.

[0056] In some specific embodiments, the anti-arching hole 9 includes a depression 10 with a funnel-shaped longitudinal section, and the gas at the adhesion surface can be discharged at the funnel intersection of the depression 10.

[0057] In some specific embodiments, the depression 10 is provided in the middle area of the surface of the reflection film 1.

[0058] Since the reflective film 1 is adhered to the glue frame 2, air holes are likely to appear during the adhesion process, and these air holes are often in the middle area of the surface of the reflective film 1. In order to prevent bubbles from appearing during the pasting process, preferably, the funnel-shaped depression 10 is used to guide the bubbles to converge, and then discharged through the funnel intersection, so as to prevent the generation of film arching phenomenon.

[0059] Figure 1 In which L represents the fpc.

[0060] The use process of the structure for preventing the separation of the reflective film and the glue frame provided by the present utility model is as follows: In the present utility model, the adhesion force between the reflective film 1 and the glue frame 2 can be increased through the cooperation of the extension edge 3 and the friction surface 4, reducing the probability of the reflective film warping. Specifically, before applying pressure, the distance between the edge of the reflective film 1 in the horizontal direction and the surface of the fpc board is increased through the extension edge 3, so as to reduce the probability of the fpc rubbing against the edge of the reflective film 1, and then directly guide the external pressure maintaining device to apply pressure to the reflective film 1 and the glue frame 2. After applying pressure, the friction surface 4 can increase the adhesion force between the reflective film 1 and the glue frame 2.

[0061] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0062] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all embodiments. The preferred embodiments of the present utility model are given in the drawings, but do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present utility model in other related technical fields shall be within the scope of the patent protection of the present utility model by the same token.

Claims

1. A structure for preventing a reflective film from being separated from a plastic frame, wherein there is an adhesion surface between the reflective film (1) and the plastic frame (2), and the prevention structure is arranged on the adhesion surface, characterized in that: The prevention structure includes: An extended edge (3) is arranged at the edge of the plastic frame (2) to increase the distance between the edge of the reflective film (1) and the surface of the FPC board in the horizontal direction; The friction surface (4) is arranged between the reflective film (1) and the plastic frame (2), and is arranged on the reflective film (1) and / or the plastic frame (2); by applying pressure to the reflective film (1) and the plastic frame (2), the friction surface (4) can increase the adhesion force between the reflective film (1) and the plastic frame (2).

2. The structure for preventing the reflection film from being separated from the plastic frame according to claim 1, characterized in that: The extended edge (3) and the rubber frame (2) are integrally formed.

3. The structure for preventing the reflection film from being separated from the plastic frame according to claim 1, characterized in that: The friction surface (4) comprises a plurality of raised platforms (5) arranged on the surface of the rubber frame (2), and all the raised platforms (5) are arranged in an array along the surface of the rubber frame (2) and are connected in sequence to form a continuous strip surface.

4. The structure for preventing the reflection film from being separated from the plastic frame according to claim 3, characterized in that: The continuous strip surface is wavy.

5. The structure for preventing the reflection film from being separated from the plastic frame according to claim 1, characterized in that: The friction surface (4) further comprises a plurality of limiting grooves (6) arranged on the surface of the reflective film (1), and each raised platform (5) is arranged corresponding to each limiting groove (6).

6. The structure for preventing the reflection film from being separated from the plastic frame according to claim 1, characterized in that: The friction surface (4) further comprises a plurality of limiting bosses (7) arranged on the surface of the reflective film (1), and the gap between each limiting boss (7) and each limiting groove (6) is arranged correspondingly.

7. The structure for preventing the reflection film from being separated from the plastic frame according to claim 1, characterized in that: The edge of the reflective film (1) is provided with a scratch-resistant surface (8).

8. The structure for preventing the reflection film from being separated from the plastic frame according to claim 1, characterized in that: It also includes a plurality of anti-arch holes (9) arranged on the reflective film (1) for discharging gas at the adhesion surface.

9. The structure for preventing the reflection film from being separated from the plastic frame according to claim 8, characterized in that: The anti-arch hole (9) comprises a depression (10) having a funnel-shaped longitudinal section, and the gas at the adhesion surface can be discharged at the funnel intersection of the depression (10).

10. The structure for preventing the reflection film from being separated from the plastic frame according to claim 9, characterized in that: The recess (10) is arranged in the middle area of ​​the surface of the reflective film (1).

Images