FPC (Flexible Printed Circuit) protective paper, FPC and display module

Abstract

The utility model provides an FPC (Flexible Printed Circuit) protective paper, an FPC and a display module, the FPC protective paper comprises a main body area, a bending area and a U-shaped groove; the main body area covers a circuit element part of the FPC; the bending area is adhered to the bending part of the FPC; and the U-shaped groove is arranged between the main body area and the bending area, so that the main body area is kept still when the bending part of the FPC is bent. When the bending part of the FPC is bent, the main body area is kept still, and only the bending area is bent along with the bending of the FPC, so that the bending of the FPC becomes more flexible; as the bending area covers the bending part of the FPC, compared with the prior art, the protection area is increased, so that the element protection paper cannot be jacked up to generate a gap when the FPC is bent, the bending property of the FPC can be considered, and the sealing property of the element protection paper is enhanced at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, and in particular to an FPC protective paper, an FPC and a display module. Background Art

[0002] In the field of display technology, FPC (Flexible Printed Circuit) is a highly reliable and extremely flexible printed circuit board made of polyimide or polyester film as a substrate. In order to effectively utilize the limited space in the display module, FPC is often provided with a bending portion, and the FPC is bent and then connected to the backlight source, etc.

[0003] There are a large number of components on the FPC, and component protection paper is needed to protect the components on the FPC to prevent the external environment from causing short circuits. Conventional design solutions, such as Figure 1 As shown, to ensure the FPC plug-in length and bendability, the component protection paper 1 should avoid the FPC bending part 2. In the case of FPC structural limitations, when the FPC is often bent, the FPC component lifts up the component protection paper, resulting in a gap. Not only will electromagnetic waves propagate through this gap, affecting the module EMC effect, but it is also easy for dust and water vapor to enter and cause damage to components. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an FPC protection paper, an FPC and a display module.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In a first aspect, an embodiment of the utility model provides an FPC protective paper, comprising: a main body area, a bending area and a U-shaped groove;

[0007] The main body area covers the circuit component portion of the FPC;

[0008] The bending area is pasted on the bending part of the FPC;

[0009] The U-shaped groove is arranged between the main body area and the bending area, so that the bending portion of the FPC keeps the main body area stationary when bending.

[0010] As a preferred improvement of the present invention, the width of the U-shaped groove is not less than 0.5 cm.

[0011] As a preferred improvement of the present invention, the length of the bending zone is not less than 2 cm.

[0012] As a preferred improvement of the present invention, the FPC protection paper is made of PET.

[0013] As a preferred improvement of the utility model, the FPC protective paper is a composite film material composed of an electromagnetic shielding film and insulating PET.

[0014] As a preferred improvement of the utility model, it also includes adhesive backing, and the adhesive backing is used for sticking on the FPC.

[0015] As a preferred improvement of the present invention, the back glue includes a first glue coating area and a second glue coating area.

[0016] As a preferred improvement of the present invention, the back glue includes a plurality of glue dots, and the plurality of glue dots are arranged in the second glue coating area.

[0017] In a second aspect, an embodiment of the utility model further provides an FPC, including the FPC protection paper provided by any embodiment of the utility model.

[0018] In a third aspect, an embodiment of the present utility model further provides a display module, including the FPC provided by any embodiment of the present utility model.

[0019] Compared with the prior art, the advantages and positive effects of the utility model are:

[0020] In the utility model, during actual use, by providing a U-shaped groove and providing it between the main body area and the bending area, the bending portion of the FPC keeps the main body area stationary when bending, and only the bending area bends with the bending of the FPC, so that the bending of the FPC becomes more flexible; since the bending area covers the bending portion of the FPC, the protection area is increased compared with the prior art, so that the component protection paper will not be lifted up and produce gaps when the FPC is bent, so that the bendability of the FPC can be taken into account and the sealing of the component protection paper can be enhanced at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of FPC protective paper in the prior art;

[0022] Figure 2 A schematic diagram of the structure of an FPC protective paper provided by the utility model;

[0023] Figure 3 A schematic diagram of the installation of an FPC protective paper provided by the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the adhesive backing provided by the utility model. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like 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 or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The utility model embodiment provides a technical solution:

[0030] First, see Figure 2-3 , the embodiment of the utility model provides a FPC protection paper, including: a main body area 100, a bending area 200 and a U-shaped groove 300;

[0031] The main body area 100 covers the circuit component part of the FPC 400;

[0032] The bending area 200 is attached to the bending portion 410 of the FPC 400;

[0033] The U-shaped groove 300 is disposed between the main body region 100 and the bending region 200 , so that the bending portion 410 of the FPC keeps the main body region 100 stationary when being bent.

[0034] In the utility model, a U-shaped groove is provided between the main body area and the bending area, so that the bending portion of the FPC keeps the main body area stationary when bending, and only the bending area bends with the bending of the FPC, so that the bending of the FPC becomes more flexible; because the bending area covers the bending portion of the FPC, the protection area is increased compared with the prior art, so that the component protection paper will not be lifted up and generate gaps when the FPC is bent, so that the bendability of the FPC can be taken into account and the sealing of the component protection paper can be enhanced at the same time.

[0035] As a preferred improvement of the present invention, please refer to Figure 2 , the width A of the U-shaped groove 300 is not less than 0.5 cm. This arrangement makes the bending of the FPC more flexible, and the side of the bending portion 410 is not restricted by the sticking of the protective paper of the main body area 100.

[0036] As a preferred improvement of the present invention, please refer to Figure 2 , the length B of the bending area 200 is not less than 2 cm. The bending area 200 set in this way will effectively cover the bending portion 410 of the FPC, increase the protection area, so that the component protection paper will not be lifted up and produce gaps when the FPC is bent, and enhance the sealing performance of the component protection paper.

[0037] As a preferred improvement of the present invention, the FPC protective paper is made of PET material. Preferably, when the protective paper is made of PET material, a layer of EMI shielding film is also covered on the FPC to achieve electromagnetic shielding of the FPC. In addition, since the electromagnetic shielding film has a conductive function, the protective paper made of insulating PET material is first covered above the component, and then the EMI shielding film is covered, so as to avoid short circuit caused by conductive connection between the component and the electromagnetic shielding film.

[0038] As a preferred improvement of the utility model, the FPC protective paper is a composite film material composed of an electromagnetic shielding film and insulating PET. The FPC protective paper is a composite material composed of metal fibers and insulating materials, which can effectively block the propagation of electromagnetic waves, isolate electromagnetic waves generated by the outside world or itself, thereby protecting the normal and stable operation of the display module, and at the same time avoiding short circuits of components and playing a role in component protection. The specific metal fibers and insulating materials used in the FPC protective paper are not limited in the embodiments of the utility model.

[0039] As a preferred improvement of the present invention, please refer to Figure 3 , and also includes a back glue 500, which is used to be pasted on the FPC. In addition, the size of the FPC protection paper can exceed the FPC, and the back glue 500 can also be used to fix the FPC on other equipment or devices to enhance the connection between the FPC and other equipment or devices.

[0040] As a preferred improvement of the present invention, please refer to Figure 3 The back glue 500 includes a first glue coating area 510 and a second glue coating area 520. The first glue coating area 510 is arranged at the outer circle of the main body area 100 and the bending area 200, and the second glue coating area 520 is arranged at a part of the main body area 100 that can contact the circuit components.

[0041] As a preferred improvement of the present invention, please refer to Figure 3 The adhesive backing 500 includes a plurality of adhesive dots 530, and the plurality of adhesive dots 530 are arranged in the second adhesive coating area 520. The arrangement position of the adhesive dots avoids the circuit components, which can ensure that the FPC protection paper is pasted on the FPC, and avoids the damage of the components caused by the removal of the protection paper due to the excessive pasting area. Preferably, the first adhesive coating area 510 can be completely covered with glue to make the pasting more firm.

[0042] In a second aspect, an embodiment of the utility model further provides an FPC, comprising the FPC protection paper provided by any embodiment of the utility model, wherein the FPC protection paper covers the FPC body of the FPC.

[0043] In a third aspect, an embodiment of the present utility model further provides a display module, including the FPC provided by any embodiment of the present utility model.

[0044] The beneficial effects of the FPC and the display module provided by the embodiments of the present utility model can refer to the beneficial effects described in the above embodiments.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A FPC protective paper, characterized in that: include: The main body area, bending area and U-shaped groove; The main body area covers the circuit component part of the FPC; The bending area is adhered to the bending portion of the FPC; The U-shaped groove is arranged between the main body area and the bending area, so that the bending portion of the FPC keeps the main body area stationary when bending.

2. The FPC protection paper according to claim 1, characterized in that: The width of the U-shaped groove is not less than 0.5 cm.

3. The FPC protection paper according to claim 1, characterized in that: The length of the bending zone is not less than 2 cm.

4. The FPC protection paper according to claim 1, characterized in that: FPC protective paper is made of PET.

5. The FPC protection paper according to claim 1, characterized in that: It also includes adhesive backing, and the adhesive backing is used for sticking on the FPC.

6. The FPC protection paper according to claim 5, characterized in that: The back glue includes a first glue coating area and a second glue coating area.

7. The FPC protection paper according to claim 6, characterized in that: The back glue includes a plurality of glue dots, and the plurality of glue dots are arranged in the second glue coating area.

8. An FPC, characterized in that: It comprises the FPC protection paper as described in any one of claims 1-7.

9. A display module, characterized in that: Comprising the FPC as claimed in claim 8.

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