Insulating film capable of covering copper foil and component

Abstract

The utility model discloses an insulating film capable of covering a copper foil and a component, which comprises an IC (integrated circuit) and a display screen FPC (flexible printed circuit) at the lower end of lower glass, the copper foil for electromagnetic shielding is arranged on the upward surface of the IC and the display screen FPC, a first insulating film is arranged on the upward surface of the copper foil and the component in a copper exposure area of the display screen FPC, and a second insulating film is arranged on the upward surface of the copper foil and the component. And a second insulating film is arranged on the downward surface of the copper foil. The insulating film on the upper surface of the copper foil is enlarged to cover the surface of an element, the copper foil does not need to be enlarged, that is, the insulating film on the surface of the copper foil replaces protective paper on the element, the insulating film is made of PET, the insulating film can also play an insulating protection role, one-time attachment can be achieved during production, the production efficiency is improved, the problem of electromagnetic shielding is solved, and the element is protected; open holes can be additionally formed in the copper foil at the position without wiring in the single-layer area of the FPC, so that the bending flexibility of the single-layer area of the FPC is improved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display, in particular to an insulating film which can cover copper foil and components. Background Art

[0002] Figure 1 and Figure 2 This is a common integrated touch display module structure. In order to achieve a good electromagnetic shielding effect, a copper foil is attached to the IC of the display screen from the FPC. A grounded copper area is added to the FPC to form an electromagnetic shielding layer. Since the IC surface is not GND, in order to reduce the impact, an insulating film is added between the copper foil and the IC surface. In order to prevent oxidation, short circuit, scratches and contamination on the copper foil surface, an insulating film is also added. The structural diagram of the copper foil is shown in the figure. Figure 3 , Figure 4 and Figure 5 This solution can significantly reduce the signal radiation caused by the internal operation of the IC and the circuit covered by the copper foil on the FPC, thereby reducing the interference to the antenna signal of the mobile phone. In addition, a layer of protective paper must be added to the FPC components to prevent short circuits and scratches on the surface of the components. However, the above operation requires the materials to be attached twice separately on the surface of the FPC, which affects production efficiency.

[0003] For example, the Chinese utility model patent (CN113337225B) discloses a copper foil composite component structure and a method for attaching it to an FPC, which includes a copper foil layer and a conductive adhesive layer arranged on the bottom surface of the copper foil layer, the upper end surface of the copper foil layer is coated with a black insulating coating layer, a transparent load-bearing protective film is attached to the black insulating coating layer, and a dust-proof film is arranged on the bottom surface of the conductive adhesive layer. The structure of the present invention is novel, and solves the problem of residual bubbles in the middle when the black insulating single-sided tape and the copper foil are attached together because both materials are too thin, and the problem of poor edge curling of the black insulating single-sided tape that exceeds the outer edge of the copper foil shape on all sides because it is too thin; it greatly improves the stability, work efficiency and quality of the copper foil composite component structure attached to the FPC of the FOG product, and the structure is reliable.

[0004] However, when the present inventor implemented this device, he found the following defects: the black insulating film can only cover the copper foil, but cannot cover the components and exposed copper areas of the FPC, and the material must be attached twice on the surface of the FPC, which affects production efficiency. Utility Model Content

[0005] Based on this, it is necessary to provide an insulating film that can cover the copper foil and components to address the above technical problems. The insulating film on the upper surface of the copper foil is enlarged to cover the surface of the component. The copper foil does not need to be enlarged, that is, the insulating film on the surface of the copper foil replaces the protective paper on the component. The insulating film is made of PET, which can also play an insulating and protective role. The production can be attached at one time to improve production efficiency, and the electromagnetic shielding problem is solved while protecting the components. In the position where there is no routing in the single-layer area of ​​the FPC, the copper foil can increase the openings, thereby improving the bending softness of the single-layer area of ​​the FPC and improving production efficiency.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An insulating film that can cover copper foil and components.

[0008] The insulating film that can cover the copper foil and components specifically includes:

[0009] The IC and the display screen FPC at the lower end of the lower glass have copper foil for electromagnetic shielding on their upward facing surfaces, a first insulating film is provided on the copper exposed area of ​​the display screen FPC, the copper foil and the upward facing surfaces of the components, and a second insulating film is provided on the downward facing surface of the copper foil.

[0010] As a preferred implementation of the insulating film that can cover the copper foil and components provided by the utility model, the copper foil is provided with at least one geometric opening.

[0011] As a preferred implementation of the insulating film that can cover the copper foil and components provided by the utility model, the cross-sectional area of ​​the geometric opening is in the shape of any one of a circle, an ellipse, a triangle, a trapezoid and a parallelogram.

[0012] As a preferred implementation of the insulating film that can cover the copper foil and the components provided by the utility model, the copper foil and the copper exposed area are in a grounded and attached state.

[0013] As a preferred embodiment of the insulating film that can cover the copper foil and components provided by the utility model, the insulating film that can cover the copper foil and components also includes a cover plate, a bonding adhesive, an upper polarizer, an upper glass, a lower glass, a backlight, a lower polarizer and a backlight FPC.

[0014] As a preferred implementation of the insulating film that can cover the copper foil and components provided by the utility model, the backlight FPC is electrically connected to the display screen FPC.

[0015] As a preferred implementation of the insulating film that can cover the copper foil and components provided by the utility model, the first insulating film and the second insulating film are made of any one of PET, PVP, and PU.

[0016] As a preferred implementation of the insulating film that can cover the copper foil and components provided by the utility model, the first insulating film covers the copper exposed area, the copper foil and the surface of the components and extends outward by 0.5mm~1mm.

[0017] As a preferred implementation of the insulating film that can cover the copper foil and components provided by the utility model, the thickness of the first insulating film and the second insulating film is 0.05mm~0.1mm.

[0018] As a preferred implementation of the insulating film that can cover the copper foil and components provided by the utility model, the thickness of the copper foil is 0.3 mm to 0.5 mm.

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

[0020] The utility model provides an insulating film that can cover copper foil and components. The insulating film on the upper surface of the copper foil is enlarged to cover the surface of the component. The copper foil does not need to be enlarged, that is, the insulating film on the surface of the copper foil replaces the protective paper on the component. The insulating film is made of PET, which can also play an insulating and protective role. The production can be attached at one time, which improves the production efficiency, and solves the electromagnetic shielding problem and protects the components. In the position where there is no wiring in the FPC single-layer area, the copper foil can increase the opening, improve the bending softness of the FPC single-layer area, and improve the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the prior art;

[0023] Figure 2 for Figure 1 A stacked graph of

[0024] Figure 3 A schematic diagram of the structure of an insulating film in the prior art (front view);

[0025] Figure 4 A schematic diagram of the structure of an insulating film in the prior art (side view);

[0026] Figure 5 A schematic diagram of the structure of an insulating film in the prior art (reverse side);

[0027] Figure 6 A schematic diagram of the structure of the insulating film provided by the utility model that can be covered on the copper foil and components;

[0028] Figure 7 A schematic diagram of the structure of a first insulating film provided by the utility model;

[0029] Figure 8 A schematic diagram of the structure of the second insulating film provided by the utility model;

[0030] Fig. 9 This is a structural schematic diagram of the geometric opening provided by the utility model.

[0031] The markings in the figure are as follows:

[0032] Lower glass 1; IC 2; display screen FPC 3; copper foil 4; exposed copper area 5; components 6; first insulating film 7; second insulating film 8; geometric opening 9; cover plate 10; bonding glue 11; upper polarizer 12; upper glass 13; backlight FPC 14; backlight 15, protective paper 16, lower polarizer 17. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0034] As background technology, Figure 1 The black insulating film can only cover the copper foil 4, but cannot cover the components 6 and the exposed copper area 5 of the FPC. The material must be attached twice separately on the surface of the FPC, which affects the production efficiency.

[0035] In order to solve this technical problem, the utility model provides an insulating film which can cover copper foil and components.

[0036] Specifically, please refer to Figure 1-3 The insulating films that can cover the copper foil and components include:

[0037] The IC2 and the display screen FPC3 at the lower end of the lower glass 1 and the upward facing surfaces of the IC2 and the display screen FPC3 are provided with copper foil 4 for electromagnetic shielding, the copper exposed area 5 of the display screen FPC3, the copper foil 4 and the upward facing surfaces of the components 6 are provided with a first insulating film 7, and the downward facing surface of the copper foil 4 is provided with a second insulating film 8.

[0038] The utility model provides an insulating film that can cover copper foil and components. The first insulating film 7 and the second insulating film 8 on the upper surface of the copper foil 4 are enlarged to cover the surface of the component. The copper foil 4 does not need to be enlarged, that is, the first insulating film 7 and the second insulating film 8 on the surface of the copper foil 4 replace the protective paper 16 on the component. The first insulating film 7 and the second insulating film 8 are made of PET, which can also play an insulating and protective role. The production can be attached at one time to improve the production efficiency, and the electromagnetic shielding problem is solved while protecting the components. In the position where there is no wiring in the FPC single-layer area, the copper foil 4 can increase the opening, improve the bending softness of the FPC single-layer area, and improve the production efficiency.

[0039] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0040] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings. Example 1

[0042] Please refer to Figure 6-9 , an insulating film that can cover copper foil and components, which includes IC2 and display screen FPC3 at the lower end of the lower glass 1, the upward facing surfaces of IC2 and the display screen FPC3 are provided with copper foil 4 for electromagnetic shielding, the copper exposed area 5 of the display screen FPC3, the copper foil 4 and the upward facing surfaces of the components 6 are provided with a first insulating film 7, and the downward facing surface of the copper foil 4 is provided with a second insulating film 8.

[0043] Through the above structural design, since the FPC will affect the mobile phone electrical signal, a copper foil 4 will be arranged on the surface of the FPC. In order to achieve a good electromagnetic shielding effect, compared with the prior art, the present design does not need to first attach the first insulating film 7 and the second insulating film 8 to the copper foil 4, and then add a layer of protective paper 16 on the copper exposed area 5 or the component 6 of the FPC. It is only necessary to enlarge the first insulating film 7 and the second insulating film 8 on the upper surface of the copper foil 4 to cover the surface of the component, and the copper foil 4 does not need to be enlarged, that is, the first insulating film 7 and the second insulating film 8 on the surface of the copper foil 4 replace the protective paper 16 on the component (such as Figure 1 , Figure 2 ), the first insulating film 7 and the second insulating film 8 are made of PET, which can also play an insulating protection role. The production can be attached at one time, which improves the production efficiency. It also solves the electromagnetic shielding problem and protects the components. In the position where there is no wiring in the FPC single-layer area, the copper foil 4 can increase the opening, improve the bending softness of the FPC single-layer area, and improve the production efficiency. This solution can greatly reduce the signal radiation caused by the internal operation of IC2 and the circuit covered by the copper foil 4 on the FPC, thereby reducing the interference to the antenna signal of the mobile phone. At the same time, it prevents problems such as short circuit and scratches on the surface of the component 6.

[0044] like Fig. 9 Specifically, the copper foil 4 is provided with at least one geometric opening 9 .

[0045] Through the above structural design, the copper foil 4 can add geometric openings 9 at the position where there is no wiring in the single-layer area of ​​the FPC, thereby improving the bending flexibility of the single-layer area of ​​the display FPC 3.

[0046] Specifically, the cross-sectional area of ​​the geometric opening 9 is in the shape of any one of a circle, an ellipse, a triangle, a trapezoid and a parallelogram.

[0047] Through the above structural design, in this embodiment, the cross-sectional shape of the geometric opening 9 is circular, and it can also be other shapes under different requirements, mainly to improve the bending flexibility of the single-layer area of ​​the display screen FPC3.

[0048] Specifically, the copper foil 4 and the exposed copper area 5 are in a grounded bonding state.

[0049] Through the above structural design, a grounded exposed copper area 5 is correspondingly added to the FPC and adhered to the copper foil 4 to form an electromagnetic shielding layer. Example 2

[0050] The insulating film provided in Example 1 that can cover the copper foil and the components is further optimized. Specifically, Figure 2 As shown, the insulating film that can cover the copper foil and components also includes a cover plate 10, a bonding adhesive 11, an upper polarizer 12, an upper glass 13, a lower glass 1, a backlight 15, a lower polarizer 17 and a backlight FPC 14.

[0051] Through the above structural design, the mobile phone module is in a fully fitted state, which is beneficial to the sealing and picture clarity.

[0052] Specifically, the backlight FPC14 is electrically connected to the display screen FPC3.

[0053] Through the above structural design, the electrical connection of the backlight FPC14 through the display screen FPC3 can be used to energize the backlight 15 to make the backlight 15 emit light. Example 3

[0054] The insulating film provided in Example 1 or 2 that can cover the copper foil and the components is further optimized, such as Figure 6-9 As shown, the first insulating film 7 and the second insulating film 8 are made of any one of PET, PVP, and PU.

[0055] Through the above-mentioned structural design, in this embodiment, the first insulating film 7 and the second insulating film 8 are made of PET. Under different requirements, they can also be made of other materials, which can also play the role of insulation protection. The production can be attached at one time to improve production efficiency, solve the electromagnetic shielding problem and protect the components.

[0056] Specifically, the first insulating film 7 covers the surfaces of the exposed copper area 5 , the copper foil 4 and the components 6 and extends outward by 0.5 mm to 1 mm.

[0057] Through the above structural design, the first insulating film 7 covers the surfaces of the exposed copper area 5, the copper foil 4 and the components 6 and extends outwards to achieve the purpose of seamless coverage.

[0058] Specifically, the thickness of the first insulating film 7 and the second insulating film 8 is 0.05 mm to 0.1 mm.

[0059] Through the above structural design, in this embodiment, the thickness is 0.05mm. Under different requirements, it can also be other thicknesses. The first insulating film 7 and the second insulating film 8 on the upper surface of the copper foil 4 are enlarged to cover the surface of the component. The copper foil 4 does not need to be enlarged, that is, the first insulating film 7 and the second insulating film 8 on the surface of the copper foil 4 replace the protective paper 16 on the component. The first insulating film 7 and the second insulating film 8 are made of PET, which can also play an insulating and protective role. The production can be attached at one time to improve the production efficiency, and the electromagnetic shielding problem is solved while protecting the components. In the position where there is no wiring in the FPC single-layer area, the copper foil 4 can increase the opening to improve the bending softness of the FPC single-layer area and improve the production efficiency.

[0060] Specifically, the thickness of the copper foil 4 is 0.3 mm to 0.5 mm.

[0061] Through the above structural design, in this embodiment, the thickness of the copper foil 4 is 0.3 mm, and it can also be other thicknesses under different requirements.

[0062] The use process of the insulating film provided by the utility model that can be covered on copper foil and components is as follows:

[0063] The first insulating film 7 and the second insulating film 8 on the upper surface of the copper foil 4 are enlarged to cover the surface of the component. The copper foil 4 does not need to be enlarged, that is, the first insulating film 7 and the second insulating film 8 on the surface of the copper foil 4 replace the protective paper 16 on the component. The first insulating film 7 and the second insulating film 8 are made of PET, which can also play an insulating and protective role. The production can be attached at one time to improve the production efficiency, and the electromagnetic shielding problem is solved while protecting the components. In the position where there is no wiring in the FPC single-layer area, the copper foil 4 can increase the opening to improve the bending flexibility of the FPC single-layer area and improve the production efficiency.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The 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 disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. An insulating film that can cover copper foil and components, characterized in that: The device comprises an IC (2) and a display screen FPC (3) at the lower end of a lower glass sheet (1); copper foil (4) for electromagnetic shielding is provided on the upwardly facing surfaces of the IC (2) and the display screen FPC (3); a first insulating film (7) is provided on the upwardly facing surfaces of a copper exposed area (5) of the display screen FPC (3), the copper foil (4) and components (6); and a second insulating film (8) is provided on the downwardly facing surface of the copper foil (4).

2. The insulating film that can cover copper foil and components according to claim 1, characterized in that: The copper foil (4) is provided with at least one geometric opening (9).

3. The insulating film that can cover copper foil and components according to claim 2, characterized in that: The cross-sectional area of ​​the geometric opening (9) is in the shape of any one of a circle, an ellipse, a triangle, a trapezoid and a parallelogram.

4. The insulating film that can cover copper foil and components according to claim 3, characterized in that: The copper foil (4) and the copper exposed area (5) are in a grounded bonding state.

5. The insulating film capable of covering copper foil and components according to claim 1, characterized in that: The insulating film that can cover the copper foil and the components also includes a cover plate (10), a bonding adhesive (11), an upper polarizer (12), an upper glass (13), a backlight (15), a lower polarizer (17) and a backlight FPC (14).

6. The insulating film capable of covering copper foil and components according to claim 5, characterized in that: The backlight FPC (16) is electrically connected to the display screen FPC (3).

7. The insulating film capable of covering copper foil and components according to claim 1, characterized in that: The material of the first insulating film (7) and the second insulating film (8) is any one of PET, PVP and PU.

8. The insulating film capable of covering copper foil and components according to claim 1, characterized in that: The first insulating film (7) covers the surfaces of the copper exposed area (5), the copper foil (4) and the component (6) and extends outwards by 0.5 mm to 1 mm.

9. The insulating film capable of covering copper foil and components according to claim 1, characterized in that: The thickness of the first insulating film and the second insulating film is 0.05 mm to 0.1 mm.

10. The insulating film capable of covering copper foil and components according to claim 1, characterized in that: The copper foil (4) has a thickness of 0.3 mm to 0.5 mm.

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