Single-conduction copper foil adhesive tape with signal shielding and grounding functions
By designing a single-guided copper foil tape with both shielding signal and grounding functions, using multi-layer film structure and adhesive design, the problem of high production costs in mobile phone display modules is solved, and the integration of signal shielding and grounding functions is achieved. Reduces production costs and improves product competitiveness.
Patent Information
- Application Number
- CN202323609896.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-27
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-27
AI Technical Summary
In mobile phone display modules, the combined structure of single-conducting copper foil tape and conductive double-sided adhesive leads to high production costs and reduces the competitiveness of the product.
Design a single-guided copper foil tape with both shielding signal and grounding functions, including copper foil, first insulating film, heavy release film, second insulating film, secondary release film and light release film, through which The hierarchical structure and viscosity design achieve the integration of the function of the signal shielding area, bending area and connection area.
Only a single copper guide foil tape is needed to achieve signal shielding of FPC and IC and grounding of the backlight iron frame by the main screen FPC, reducing production costs and improving product competitiveness.
Smart Images
Figure CN222182157U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of packaging materials, and more specifically to a single-conductor copper foil tape with both signal shielding and grounding functions. Background Art
[0002] In order to shield the interference of the main screen FPC and IC signals on the host RF signal, mobile phone display modules will add single-conductor copper foil tape on the main screen FPC and IC to shield the signal; in addition, in order to achieve the grounding of the main screen FPC to the backlight iron frame, mobile phone display modules will attach a conductive double-sided adhesive between the main screen FPC and the backlight iron frame to achieve grounding. However, given the increasing competition and cost pressure in mobile phone display modules, this structure requires the use of two components, single-conductor copper foil tape and conductive double-sided adhesive, which increases the production cost of the product and reduces the competitiveness of the product. Utility Model Content
[0003] The technical problem to be solved by the utility model is how to integrate the two components of a single-conducting copper foil tape and a conductive double-sided adhesive tape into one component, so as to reduce the production cost of the product and improve the competitiveness of the product.
[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:
[0005] In order to solve the above technical problems, the utility model provides a single-conductor copper foil tape with both signal shielding and grounding functions, which includes copper foil, a first insulating film, a heavy release film, a second insulating film, a secondary release film and a light release film, the first insulating film covers the upper surface of the copper foil, the heavy release film covers the upper surface of the first insulating film, the lower surface of the copper foil is sticky, the copper foil includes a signal shielding area, a bending area and a grounding area, the second insulating film covers the lower surface of the copper foil located in the signal shielding area, the secondary release film covers the lower surface of the copper foil located in the grounding area, and the light release film covers the lower surfaces of the second insulating film and the secondary release film and the bending area of the copper foil.
[0006] As a preferred implementation of the single-conductor copper foil tape with both signal shielding and grounding functions provided by the utility model, the first insulating film is a black insulating film.
[0007] As a preferred implementation of the single-conductor copper foil tape with both signal shielding and grounding functions provided by the utility model, the thickness of the first insulating film and the second insulating film are both 12 μm.
[0008] As a preferred implementation of the single-conductor copper foil tape with both signal shielding and grounding functions provided by the utility model, the thickness of the copper foil is 30 μm to 50 μm.
[0009] As a preferred implementation of the single-conductor copper foil tape with both signal shielding and grounding functions provided by the utility model, alignment holes are respectively provided on the left and right sides of the heavy release film.
[0010] As a preferred implementation of the single-conductor copper foil tape with both signal shielding and grounding functions provided by the utility model, the apertures of the two alignment holes are different in size.
[0011] As a preferred implementation of the single-conductor copper foil tape with both signal shielding and grounding functions provided by the utility model, a film tearing handle is provided on the secondary release film.
[0012] As a preferred embodiment of the single-conductor copper foil tape with both signal shielding and grounding functions provided by the utility model, a "concave" shaped through hole is opened on the secondary release film, and the remaining material of the "concave" shaped through hole forms the film tearing handle.
[0013] As a preferred implementation of the single-conductor copper foil tape with both signal shielding and grounding functions provided by the utility model, waste material of the “concave”-shaped through hole remains on the secondary release film.
[0014] As a preferred implementation of the single-conductor copper foil tape with both signal shielding and grounding functions provided by the utility model, a bonding area is provided on the waste material of the "concave"-shaped through hole.
[0015] The utility model has the following beneficial effects:
[0016] The shielding area of the copper foil corresponds to the position of the FPC and IC of the mobile phone display module, the bending area corresponds to the bending area of the FPC, and the grounding area corresponds to the pasting area of the main screen FPC and the backlight iron frame, so that only a single-conductor copper foil tape is needed to realize the signal shielding function of the FPC and IC and the grounding function of the main screen FPC to the backlight iron frame, which reduces the production cost of the product and improves the competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the scheme in the present application, 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 present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 The utility model provides a structural schematic diagram of a single-conductor copper foil tape with both signal shielding and grounding functions.
[0019] Figure 2 for Figure 1Schematic diagram of the decomposition structure.
[0020] Figure 3 Schematic diagram of the structure of the secondary release film.
[0021] Figure 4 for Figure 3 Top view of the .
[0022] Figure 5 for Figure 4 Schematic diagram of the improved structure.
[0023] Description of Figure Numbers:
[0024] Copper foil 1; first insulating film 2; heavy release film 3; second insulating film 4; secondary release film 5; light release film 6; signal shielding area 11; bending area 12; grounding area 13; alignment hole 31;
[0025] Film tearing handle 51; concave through hole 52; waste material 53; bonding area 54. DETAILED DESCRIPTION
[0026] 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.
[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0028] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0029] The utility model provides a single-conductor copper foil tape with both signal shielding and grounding functions, comprising copper foil, a first insulating film, a heavy release film, a second insulating film, a secondary release film and a light release film, wherein the first insulating film covers the upper surface of the copper foil, the heavy release film covers the upper surface of the first insulating film, the lower surface of the copper foil is sticky, the copper foil comprises a signal shielding area, a bending area and a grounding area, the second insulating film covers the lower surface of the copper foil located in the signal shielding area, the secondary release film covers the lower surface of the copper foil located in the grounding area, and the light release film covers the lower surfaces of the second insulating film and the secondary release film and the bending area of the copper foil.
[0030] The shielding area of the copper foil corresponds to the position of the FPC and IC of the mobile phone display module, the bending area corresponds to the bending area of the FPC, and the grounding area corresponds to the pasting area of the main screen FPC and the backlight iron frame, so that only a single-conductor copper foil tape is needed to realize the signal shielding function of the FPC and IC and the grounding function of the main screen FPC to the backlight iron frame, which reduces the production cost of the product and improves the competitiveness of the product.
[0031] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention.
[0032] Example 1
[0033] See also Figure 1 and Figure 2 , a single-conductor copper foil tape with both signal shielding and grounding functions provided by the utility model, comprising a copper foil 1, a first insulating film 2, a heavy release film 3, a second insulating film 4, a secondary release film 5 and a light release film 6, wherein the first insulating film 2 covers the upper surface of the copper foil 1, the heavy release film 3 covers the upper surface of the first insulating film 2, the lower surface of the copper foil 1 is sticky, the copper foil 1 comprises a signal shielding area 11, a bending area 12 and a grounding area 13, the second insulating film 4 covers the lower surface of the copper foil 1 located in the signal shielding area 11, the secondary release film 5 covers the lower surface of the copper foil 1 located in the grounding area 13, and the light release film 6 covers the lower surfaces of the second insulating film 4 and the secondary release film 5 and the bending area of the copper foil 1.
[0034] Furthermore, the first insulating film 2 is a black insulating film.
[0035] Furthermore, the thickness of the first insulating film 2 and the second insulating film 4 are both 12 μm.
[0036] Furthermore, the copper foil 1 has a thickness of 30 μm to 50 μm.
[0037] Furthermore, alignment holes 31 are respectively provided on the left and right sides of the heavy release film 3 .
[0038] Furthermore, the diameters of the two alignment holes 31 are different.
[0039] That is, the first layer is a heavy release film 3, and the heavy release film 3 is provided with alignment holes 31 with different apertures, which can be manually attached and aligned by a clamp.
[0040] The second layer is a first insulating film 2, namely a black insulating film. The thickness of the black insulating film is about 12 um. The adhesive surface of the black insulating film is attached to the non-adhesive surface of the copper foil 1.
[0041] The third layer is a copper foil 1. The thickness of the copper foil 1 can be 30 μm or 50 μm. The adhesive surface of the copper foil 1 faces the light release film 6.
[0042] The fourth layer is the second insulating film 4 and the secondary release film 5. The area corresponding to the second insulating film 4 is the main screen IC position area, the purpose is to avoid the copper foil 1 and the IC short circuit. The area of the secondary release film 5 corresponds to the main screen FPC and the backlight iron frame pasting area. The second insulating film 4 can be 12μm. The material and thickness of the secondary release film 5 can be selected according to actual conditions.
[0043] The fifth layer is a light release film 6 in a roll state, and the first to fourth layers are attached to the light release film 6 to achieve transportation and storage.
[0044] When in use, the first layer of heavy release film 3 is used to pull up the first layer, the second layer, the third layer and the fourth layer to separate from the light release film 6. The single-conductor copper foil tape is attached to the IC and FPC of the COG / FOG main screen by hand or machine attachment through the alignment hole 31.
[0045] Next, the heavy release film 3 is torn off.
[0046] The COG / FOG main screen with single-conductor copper foil tape is covered with a cover plate. At this time, the cover plate blocks the single-conductor copper foil 1 in the COG area and the FOG area.
[0047] Then, the backlight is assembled.
[0048] Finally, fold the main screen FPC onto the backlight, tear off the secondary release film 5, and stick the protruding copper foil 1 onto the backlight iron frame to fix and ground the main screen FPC.
[0049] Example 2
[0050] See also Figures 3 to 5 As a further optimization solution of Example 1, in this embodiment, a film tearing handle 51 is provided on the secondary release film 5 so that the secondary release film 5 can be torn off by the film tearing handle 51 .
[0051] A "concave" shaped through hole 52 is opened on the secondary release film 5, and the residual material of the "concave" shaped through hole 52 forms a film tearing handle 51, so there is no need to add a film tearing handle 51 on the periphery of the secondary release film 5. Therefore, the film tearing handle 51 will not be unable to be placed due to the limitation of the peripheral space, and the situation of needing to use tweezers to lift it when the peripheral space is limited is avoided, thereby saving labor costs; and the material of the peripheral film tearing handle 51 can be omitted, which can greatly reduce material costs.
[0052] Furthermore, the waste material 53 of the “concave”-shaped through hole 52 remains on the secondary release film 5. Before the secondary release film 5 is torn off, the waste material 53 is still connected to the secondary release film 5, which can effectively prevent dust or other particles from entering the product surface. Since the waste material 53 is still connected to the secondary release film 5, it is difficult to tear off the film tearing handle 51 at this time, so an adhesive area 54 can be set on the upper surface of the waste material 53, preferably adhesive, but not limited to this. When tearing off the upper secondary release film 5, the waste material 53 can be torn off with the adhesive first, and then the secondary release film 5 can be torn off with the film tearing handle 51.
[0053] Furthermore, each corner of the “concave”-shaped through hole 52 is provided with a rounded corner, so that the stress during film tearing is not concentrated at the corner, thereby avoiding the film tearing handle 51 from being torn due to stress concentration, and further improving the working efficiency.
[0054] 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.
[0055] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application 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 present application more thorough and comprehensive. Although the present application 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 perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.
Claims
1. A single-conductor copper foil tape with both signal shielding and grounding functions, characterized in that: It includes copper foil, a first insulating film, a heavy release film, a second insulating film, a secondary release film and a light release film, wherein the first insulating film covers the upper surface of the copper foil, the heavy release film covers the upper surface of the first insulating film, the lower surface of the copper foil is sticky, the copper foil includes a signal shielding area, a bending area and a grounding area, the second insulating film covers the lower surface of the copper foil located in the signal shielding area, the secondary release film covers the lower surface of the copper foil located in the grounding area, and the light release film covers the lower surfaces of the second insulating film and the secondary release film and the bending area of the copper foil.
2. The single-conductor copper foil tape with both signal shielding and grounding functions according to claim 1, characterized in that: The first insulating film is a black insulating film.
3. The single-conductor copper foil tape with both signal shielding and grounding functions according to claim 1, characterized in that: The thickness of the first insulating film and the second insulating film are both 12 μm.
4. The single-conductor copper foil tape with both signal shielding and grounding functions according to claim 1, characterized in that: The copper foil has a thickness of 30 μm to 50 μm.
5. The single-conductor copper foil tape with both signal shielding and grounding functions according to claim 1, characterized in that: Alignment holes are respectively arranged on the left and right sides of the heavy release film.
6. The single-conductor copper foil tape with both signal shielding and grounding functions according to claim 5, characterized in that: The diameters of the two alignment holes are different.
7. The single-conductor copper foil tape with both signal shielding and grounding functions according to claim 1, characterized in that: The secondary release film is provided with a film tearing handle.
8. The single-conductor copper foil tape with both signal shielding and grounding functions according to claim 7, characterized in that: The secondary release film is provided with a concave through hole, and the remaining material of the concave through hole forms the film tearing handle.
9. The single-conductor copper foil tape with both signal shielding and grounding functions according to claim 8, characterized in that: The waste material of the "concave"-shaped through hole remains on the secondary release film.
10. The single-conductor copper foil tape with both signal shielding and grounding functions according to claim 9, characterized in that: A bonding area is provided on the waste material of the "concave"-shaped through hole.