Novel backlight graphite flake protective film structure

Abstract

The utility model discloses a novel backlight graphite flake protective film structure which comprises a graphite flake body, a protective film body, a filling film and an iron frame body. An FPC placement area is formed in the middle of the graphite sheet body, the filling film is fixed on the back surface of the protective film body, the protective film body is attached to the surface of the graphite sheet body, and the filling film is placed in the FPC placement area; the protective film body is not hollowed out, the matte film made of the PET material is additionally attached to the position, corresponding to the FPC placing area (hollowed area), of the protective film body, and the surface, making contact with the iron frame body, of the matte film does not contain silicone oil, so that the dyne value of the surface of the iron frame body is not affected, that is, the part, containing the silicone oil, of the protective film body only makes contact with the graphite sheet body, and the damage to the surface of the iron frame body is avoided. The graphite sheet body is not in contact with the iron frame body, and the filling film in contact with the iron frame body can play a role in isolating the protective film body, so that the graphite sheet body is convenient to attach, and silicone oil on the surface of the protective film can be prevented from polluting the surface of the iron frame body.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite sheet protective films, and particularly to a novel backlight graphite sheet protective film structure. Background Art

[0002] At present, in order to solve the heat dissipation problem of mobile phone backlight products, a graphite sheet material is pasted on the surface of the iron frame for heat dissipation. The graphite sheet needs a protective film, and a layer of silicone oil is provided on the surface of this protective film to facilitate the pasting of the graphite sheet.

[0003] Moreover, the graphite sheet needs a small hollowed-out area to paste the module FPC. When the graphite sheet is hollowed out, since the protective film on the graphite sheet has silicone oil, the silicone oil will transfer through the hollowed-out area to the surface of the iron frame, resulting in the dyne value of the iron frame not meeting the standard. Furthermore, the adhesion between the iron frame and the double-sided tape is insufficient, and the module FPC is prone to rebound and warp.

[0004] In the prior art, usually the protective film in the hollowed-out area of the graphite sheet is also designed to be hollowed out (refer to Figure 6 ) to prevent the silicone oil on the protective film from contacting the iron frame. However, for some project products, due to the too narrow width of the graphite sheet after hollowing out, wrinkles are likely to occur during pasting, ultimately resulting in defective graphite sheets.

[0005] Therefore, after exploring the problems such as those mentioned above, we specifically designed a novel backlight graphite sheet protective film structure. Content of the Utility Model

[0006] The utility model aims to provide a technical solution to solve the above problems in order to overcome the above deficiencies.

[0007] To achieve the above object, the utility model provides the following technical solution: A novel backlight graphite sheet protective film structure, including a graphite sheet body, a protective film body, a filling film, and an iron frame body; an FPC placement area is opened in the middle of the graphite sheet body, the filling film is fixed on the back of the protective film body, the protective film body is attached to the surface of the graphite sheet body, and the filling film is placed in the FPC placement area.

[0008] As a further solution of the utility model: A release film is attached to the back of the graphite sheet body, and after the release film on the back of the graphite sheet body is torn off, it is attached to the iron frame body.

[0009] As a further solution of the utility model: The FPC placement area is a special-shaped groove body, and the size of the FPC placement area is adapted to the size of the FPC installed in the iron frame body.

[0010] As a further solution of the utility model: The top of the FPC placement area is designed with an open structure, and multiple corner parts of the inner side wall of the FPC placement area are designed into arc structures.

[0011] As a further solution of the present utility model: The shape and structure of the filling film are the same as those of the FPC placement area. The filling film is integrally filled in the FPC placement area, and the outer side wall of the filling film is attached to the inner side wall of the FPC placement area.

[0012] As a further solution of the present utility model: The thickness of the filling film is the same as that of the graphite sheet body, and both thicknesses are between 0.01 mm and 0.03 mm.

[0013] As a further solution of the present utility model: Protective film tearing handles are integrally formed on both the left and right sides of the top of the protective film body, and the two protective film tearing handles are of the same size.

[0014] As a further solution of the present utility model: The protective film tearing handle is parallel to the protective film body, and the protective film tearing handle is designed to be in an extended state.

[0015] As a further solution of the present utility model: The graphite sheet body, the protective film body, and the release film are of the same size, and the thickness of the graphite sheet body is thicker than that of the protective film body and the release film.

[0016] As a further solution of the present utility model: The filling film is a matte film made of PET material.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] In this application, through the designed protective film body, the protective film body is not hollowed out. A layer of matte film made of PET material is additionally attached at the position of the protective film body corresponding to the FPC placement area (hollowed-out area). The surface of the matte film in contact with the iron frame body does not contain silicone oil, so it will not affect the dyne value of the surface of the iron frame body. That is to say, the part of the protective film body containing silicone oil only contacts the graphite sheet body and does not contact the iron frame body. The filling film in contact with the iron frame body can play a role in isolating the protective film body. In this way, the graphite sheet body is both convenient to attach and can prevent the silicone oil on the surface of the protective film from contaminating the surface of the iron frame body. At the same time, it can also maintain the integrity of the structure of the protective film body, play a role in strengthening the structure of the graphite sheet body, and avoid the occurrence of wrinkles during attachment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic side sectional structure view of the whole of the present utility model;

[0020] Figure 2 is a schematic front view structure view of the graphite sheet body of the present utility model;

[0021] Figure 3 is a schematic rear view structure view of the protective film body of the present utility model;

[0022] Figure 4 It is a schematic structural diagram of the graphite sheet body attached to the iron frame body when the protective film body of the present utility model is not torn.

[0023] Figure 5 It is a schematic structural diagram of the graphite sheet body attached to the iron frame body when the protective film body of the present utility model is torn.

[0024] Figure 6 It is a front view structural schematic diagram of the prior art protective film.

[0025] The reference numerals and names in the figure are as follows:

[0026] 1. Graphite sheet body; 2. FPC placement area; 3. Protective film body; 4. Filling film; 5. Protective film tearing handle; 6. Release film; 7. Iron frame body. Specific embodiments

[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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-5 , a novel backlight graphite sheet protective film structure, including a graphite sheet body 1, a protective film body 3, a filling film 4, and an iron frame body 7; an FPC placement area 2 is provided in the middle of the graphite sheet body 1, the filling film 4 is fixed on the back of the protective film body 3, the protective film body 3 is attached to the surface of the graphite sheet body 1, and the filling film 4 is placed in the FPC placement area 2.

[0029] Please refer to Figure 1 and Figure 4 , in this embodiment, a release film 6 is attached to the back of the graphite sheet body 1, and after the release film 6 on the back of the graphite sheet body 1 is torn off, it is attached to the iron frame body 7.

[0030] Specifically, the release film 6 can protect the back of the graphite sheet body 1, avoid the adhesion of dust or moisture, and ensure that the subsequent graphite sheet body 1 can be normally attached to the iron frame body 7.

[0031] Please refer to Figures 1-3 , in this embodiment, the FPC placement area 2 is a special-shaped groove body, and the size of the FPC placement area 2 is adapted to the size of the FPC installed in the iron frame body 7; the top of the FPC placement area 2 is designed with an open structure, and multiple corner parts of the inner side wall of the FPC placement area 2 are designed into arc structures.

[0032] Specifically, the FPC placement area 2 is a hollowed-out area. Setting the FPC placement area 2 facilitates the subsequent insertion of the FPC in the iron frame body 7, realizing the installation of the module FPC. The top of the FPC placement area 2 is open, which is convenient for the insertion of the FPC and can ensure the flatness after the FPC is inserted into the FPC placement area 2.

[0033] Please refer to Figures 1-3 , in this embodiment, the shape and structure of the filling film 4 are the same as those of the FPC placement area 2. The filling film 4 is integrally filled in the FPC placement area 2, and the outer side wall of the filling film 4 fits against the inner side wall of the FPC placement area 2; the thickness of the filling film 4 is the same as that of the graphite sheet body 1, and both thicknesses are between 0.01 mm and 0.03 mm. The filling film 4 is a matte film made of a PET material.

[0034] Specifically, when the graphite sheet body 1 is not in use, the filling film 4 can be placed in the FPC placement area 2. The filling film 4 can fill the hollow area of the graphite sheet body 1, indirectly improving the integrity of the graphite sheet body 1. Cooperating with the protective film body 3 with a complete structure, it can effectively reduce the occurrence of wrinkles in the graphite sheet body 1 and ensure that the graphite sheet body 1 fits flatly on the iron frame body 7.

[0035] Please refer to Figures 3-4 , in this embodiment, protective film handles 5 are integrally formed on both the left and right sides of the top of the protective film body 3, and the two protective film handles 5 are of the same size; the protective film handles 5 are parallel to the protective film body 3, and the protective film handles 5 are designed to be in an extended state.

[0036] Specifically, after the graphite sheet body 1 is attached to the iron frame body 7, the protective film body 3 needs to be torn off to expose the FPC placement area 2. Therefore, two protective film handles 5 are provided on the protective film body 3, which facilitates tearing off the protective film body 3 from any direction. The protective film handles 5 being parallel to the protective film body 3 prevents the protective film handles 5 from warping and thus avoids the occurrence of wrinkles.

[0037] Please refer to Figure 1 , in this embodiment, the graphite sheet body 1, the protective film body 3, and the release film 6 are of the same size, and the thickness of the graphite sheet body 1 is thicker than that of the protective film body 3 and the release film 6.

[0038] Specifically, the graphite sheet body 1, the protective film body 3, and the release film 6 being of the same size can completely protect the back of the graphite sheet body 1 using the release film 6 and completely protect the front of the graphite sheet body 1 using the protective film body 3.

[0039] When in use:

[0040] First, tear off the release film 6 attached to the back of the graphite sheet body 1, then attach the graphite sheet body 1 to the iron frame body 7, and press firmly on the graphite sheet body 1 to make it firmly attached to the iron frame body 7;

[0041] Finally, tear off the protective film body 3 through the handle 5 of the protective film. When tearing, the filling film on the back of the protective film body 3 exits from the FPC placement area 2 until the entire protective film body 3 is torn off from the graphite sheet body 1. At this time, the FPC placement area 2 on the graphite sheet body 1 is exposed. When installing the module FPC, the module FPC can be placed in the FPC placement area 2 (hollow area).

[0042] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A novel backlight graphite sheet protective film structure, characterized in that: It comprises a graphite sheet body (1), a protective film body (3), a filling film (4) and an iron frame body (7); An FPC placement area (2) is provided in the middle of the graphite sheet body (1), the filling film (4) is fixed on the back of the protective film body (3), the protective film body (3) is attached to the surface of the graphite sheet body (1), and the filling film (4) is placed in the FPC placement area (2).

2. The novel backlight graphite sheet protective film structure according to claim 1, characterized in that: A release film (6) is attached to the back of the graphite sheet body (1), and the release film (6) on the back of the graphite sheet body (1) is torn off and attached to the iron frame body (7).

3. The novel backlight graphite sheet protective film structure according to claim 1, characterized in that: The FPC placement area (2) is a special-shaped groove body, and the size of the FPC placement area (2) is adapted to the size of the FPC installed in the iron frame body (7).

4. The novel backlight graphite sheet protective film structure according to claim 3 is characterized in that: The top of the FPC placement area (2) is designed as an open structure, and multiple corners of the inner side wall of the FPC placement area (2) are designed as arc structures.

5. The novel backlight graphite sheet protective film structure according to claim 1, characterized in that: The shape and structure of the filling film (4) are the same as those of the FPC placement area (2); the filling film (4) is entirely filled in the FPC placement area (2) and the outer side wall of the filling film (4) is in contact with the inner side wall of the FPC placement area (2).

6. The novel backlight graphite sheet protective film structure according to claim 1, characterized in that: The thickness of the filling film (4) is the same as that of the graphite sheet body (1), and both thicknesses are between 0.01 mm and 0.03 mm.

7. The novel backlight graphite sheet protective film structure according to claim 1, characterized in that: Protective film tearing handles (5) are integrally formed on both the left and right sides of the top of the protective film body (3), and the two protective film tearing handles (5) are of the same size.

8. The novel backlight graphite sheet protective film structure according to claim 7, characterized in that: The protective film tearing handle (5) is parallel to the protective film body (3), and the protective film tearing handle (5) is designed to be in an extended state.

9. The novel backlight graphite sheet protective film structure according to claim 1, characterized in that: The graphite sheet body (1), the protective film body (3) and the release film (6) are of the same size, and the graphite sheet body (1) is thicker than the protective film body (3) and the release film (6).

10. The novel backlight graphite sheet protective film structure according to claim 1, characterized in that: The filling film (4) is a matte film made of PET material.

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