FPC surface electromagnetic wave protection structure

Abstract

The utility model relates to the technical field of circuit protection materials, in particular to an FPC (flexible printed circuit) surface electromagnetic wave protection structure, which comprises a first insulated rubber tape layer, a conductive cloth layer, a second insulated rubber tape layer and a sticky PET (polyethylene terephthalate) base film layer which are sequentially arranged from top to bottom, and the sum of the thicknesses of the layers is not less than 0.5 mm. The FPC surface electromagnetic wave protection structure is simple in structure, reasonable in design and high in reliability. Conductive shielding is realized by adopting the conductive cloth layer as a dielectric material, the upper and lower surfaces of the conductive cloth layer are protected by adopting the insulating tape layers, an ink layer is not needed, meanwhile, the adhesive PET base film layer is arranged, direct fitting forming can be realized, high-temperature and high-pressure forming is not needed, forming is convenient, an electronic component area is directly covered during use, and the cost is reduced. The protection and electromagnetic wave protection effects of the electronic component area are achieved, and use and operation are very easy.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit protection materials, in particular to an FPC surface electromagnetic wave protection structure. Background Art

[0002] Flexible circuit (FPC) is a printed circuit with high reliability and excellent flexibility made of polyester film or polyimide as the substrate. By embedding the circuit design on the bendable thin plastic sheet, a large number of precision components can be stacked in a narrow and limited space, thus forming a bendable flexible circuit. However, FPC circuits will generate electromagnetic interference in various frequency bands due to the spatial radiation of clutter. These electromagnetic interferences will not only affect other circuits, but also cause the performance and function of the product itself to be reduced, and the electromagnetic compatibility will not meet the requirements of relevant standards. Therefore, in the FPC industry, during the high-speed signal transmission process, its surface usually adopts electromagnetic wave protection signal interference method, so that the internal signal transmission remains stable, without interference or noise, to prevent abnormal signal transmission.

[0003] At present, conventional EMI is composed of three layers of insulating black ink (7um) + metal alloy (0.3um) + resin glue (5um). It is relatively thin and needs to be baked and formed after high temperature and high pressure. It can only be attached to the same plane. The production process is relatively complicated and cannot be completed in one go, which is inconvenient to use.

[0004] In view of this, the present application aims to provide an FPC surface electromagnetic wave protection structure to better solve the above technical problems. Utility Model Content

[0005] In order to solve the above problems, the utility model provides an FPC surface electromagnetic wave protection structure, which adopts conductive cloth to achieve conductive shielding, does not need printing ink, and uses PET carrier film, can be directly bonded and formed, and is easy to use.

[0006] The technical solution adopted by the utility model is:

[0007] An FPC surface electromagnetic wave protection structure comprises a first insulating tape layer, a conductive cloth layer, a second insulating tape layer, and a sticky PET base film layer which are arranged in sequence from top to bottom, and the sum of the thicknesses of the layers is not less than 0.5 mm.

[0008] Furthermore, the thickness of the first insulating tape layer and the second insulating tape layer are respectively set to 0.1 mm.

[0009] Furthermore, the thickness of the conductive cloth layer is set to 0.03 mm.

[0010] Furthermore, the thickness of the adhesive PET base film layer is set to 0.1 mm.

[0011] Furthermore, the first insulating tape layer is made of an insulating tape of model KC71010BK; and the second insulating tape layer is made of an insulating tape of model TESA7910.

[0012] Furthermore, the conductive cloth layer is made of conductive cloth of model HSN82203SP.

[0013] Furthermore, the sticky PET base film layer is made of PET material with model number KC10T.

[0014] The beneficial effects of the utility model are as follows:

[0015] The FPC surface electromagnetic wave protection structure provided by the utility model comprises a first insulating tape layer, a conductive cloth layer, a second insulating tape layer, and a sticky PET base film layer which are arranged in sequence from top to bottom, and the sum of the thicknesses of the layers is not less than 0.5 mm. The utility model has a simple structure and a reasonable design, realizes conductive shielding by adopting a conductive cloth layer as a dielectric material, and adopts insulating tape layers for protection on the upper and lower surfaces of the conductive cloth layer, and does not require an ink layer. At the same time, a sticky PET base film layer is provided, which can be directly bonded and formed, does not require high temperature and high pressure forming, and is convenient to form. When in use, it directly covers the electronic component area, realizes the protection of the electronic component area and the electromagnetic wave protection effect, and is very simple to use and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of some embodiments of the present application;

[0017] Figure 2 A schematic diagram of the use status of the protective structure provided for this application.

[0018] Description of reference numerals:

[0019] The first insulating tape layer 1, the conductive cloth layer 2, the second insulating tape layer 3, the sticky PET base film layer 4, A--FPC, B--electronic components. DETAILED DESCRIPTION

[0020] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1 As shown, the FPC surface electromagnetic wave protection structure described in this embodiment includes a first insulating tape layer 1, a conductive cloth layer 2, a second insulating tape layer 3, and a sticky PET base film layer arranged in sequence from top to bottom, and the sum of the thicknesses of the layers is not less than 0.5 mm.

[0024] This embodiment has a simple structure and a reasonable design. Conductive shielding is achieved by using a conductive cloth layer 2 as a dielectric material, and insulating tape layers are used for protection on the upper and lower surfaces of the conductive cloth layer 2. There is no need to set an ink layer. At the same time, a sticky PET base film layer is provided, which can be directly bonded to form, and high temperature and high pressure molding is not required, so molding is convenient.

[0025] See also Figure 2 As shown, it is attached to the surface of the FPC protection area. The protection structure provided in this embodiment is relatively thick. When in use, it can be directly attached to the surface by hand. It has the function of wrapping and protecting high and low surfaces and electronic components. At the same time, it realizes the characteristics of use in three-dimensional space and natural room temperature. It is simple, quick and in place at one time, and the operation is very simple and convenient.

[0026] Specifically, since there is no need to set ink in the present application, there is no need for high-temperature and high-pressure baking steps. The production process is simple and can effectively save costs. At the same time, the present application makes product assembly easier to implement and meets the different assembly space requirements of products. In addition, the raw materials used in the present application are cost-effective and have better application prospects.

[0027] In some specific embodiments, the thickness of the first insulating tape layer 1 and the second insulating tape layer 3 are respectively set to 0.1 mm.

[0028] Specifically, the thickness of the conductive cloth layer 2 is set to 0.03 mm.

[0029] Specifically, the thickness of the adhesive PET base film layer is set to 0.1 mm.

[0030] The thickness setting of each layer is specifically shown in this embodiment, which is a preferred embodiment. Based on the actual product space requirements, the thickness of each layer can also be fine-tuned, which is not limited here.

[0031] In some embodiments, the first insulating tape layer 1 is made of an insulating tape of model KC71010BK; and the second insulating tape layer 3 is made of an insulating tape of model TESA7910.

[0032] Specifically, the conductive cloth layer 2 is made of conductive cloth of model HSN82203SP.

[0033] Specifically, the sticky PET base film layer is made of PET material with model number KC10T.

[0034] This embodiment specifically shows the selection of materials for each layer, which has a high cost-effectiveness without using raw materials. At the same time, after assembly, it has better protection and shielding effects on electronic components and good use effect.

[0035] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An FPC surface electromagnetic wave protection structure, characterized in that: It comprises a first insulating tape layer, a conductive cloth layer, a second insulating tape layer, and a sticky PET base film layer which are arranged in sequence from top to bottom, and the sum of the thicknesses of the layers is not less than 0.5 mm.

2. The FPC surface electromagnetic wave protection structure according to claim 1, characterized in that: The thickness of the first insulating tape layer and the second insulating tape layer are respectively set to 0.1 mm.

3. The FPC surface electromagnetic wave protection structure according to claim 2, characterized in that: The thickness of the conductive cloth layer is set to 0.03 mm.

4. The FPC surface electromagnetic wave protection structure according to claim 3, characterized in that: The thickness of the adhesive PET base film layer is set to 0.1 mm.

5. The FPC surface electromagnetic wave protection structure according to claim 1, characterized in that: The first insulating tape layer is made of insulating tape of model KC71010BK; the second insulating tape layer is made of insulating tape of model TESA7910.

6. The FPC surface electromagnetic wave protection structure according to claim 5, characterized in that: The conductive fabric layer is made of conductive fabric of model HSN82203SP.

7. The FPC surface electromagnetic wave protection structure according to claim 6, characterized in that: The sticky PET base film layer is made of PET material with model number KC10T.

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