Flexible circuit board, terminal device

Abstract

The present disclosure provides a flexible circuit board and a terminal device, and relates to the technical field of terminals. The flexible circuit board comprises a first surface, a second surface and a side surface. The first surface and the second surface are oppositely arranged, and the side surface connects the first surface and the second surface. A first cutting groove is arranged on the side surface, and the depth of the first cutting groove is less than the width of the flexible circuit board. The flexible circuit board can be fixed on an uneven mounting area. The first cutting groove arranged on the side surface of the flexible circuit board optimizes the bending performance of the flexible circuit board, so that the flexible circuit board is more likely to produce side surface bending deformation to fit the curved mounting area. In this case, the requirements of the flexible circuit board for the space size and flatness of the mounting area are reduced. Further, the restriction on the internal space of the terminal device using the flexible circuit board is reduced, and the design and assembly difficulty of the terminal device is reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of terminal equipment, and in particular, to a flexible circuit board and a terminal equipment. BACKGROUND

[0002] The circuit board is an important component of the terminal equipment, and various components are integrated on the circuit board to meet the design requirements of small and light terminal equipment.

[0003] In the related art, the terminal equipment usually uses a printed circuit board with a hard substrate. Such a circuit board needs to be installed in an area with sufficient space and good flatness to ensure stable assembly and normal use of the terminal equipment.

[0004] The circuit board in the terminal provided by the related art has high requirements for the installation area, which limits the internal space planning of the terminal equipment and increases the design and assembly difficulty of the terminal equipment. SUMMARY

[0005] The present disclosure provides a flexible circuit board and a terminal equipment to solve the problems in the related art.

[0006] The first aspect of the present disclosure provides a flexible circuit board, comprising: a first surface, a second surface, and a side surface;

[0007] The first surface and the second surface are oppositely arranged, and the first surface and / or the second surface is used to arrange electronic components;

[0008] The side surface connects the first surface and the second surface;

[0009] A first slot is arranged on the side surface, and the depth of the first slot is less than the width of the flexible circuit board.

[0010] Optionally, at least two first slots are arranged on the side surface.

[0011] The at least two first slots are arranged along the thickness direction of the flexible circuit board and arranged and distributed along the length or width direction of the flexible circuit board.

[0012] Optionally, the first slots are arranged on two oppositely arranged side surfaces.

[0013] Optionally, the first slot comprises an arc-shaped inner wall, and the inner wall extends to the first surface and / or the second surface and forms an arc-shaped opening on the first surface and / or the second surface.

[0014] Optionally, an electronic device is arranged on the first surface and / or the second surface, and the first cutting groove has a depth less than a distance from the first cutting groove to the electronic device.

[0015] Optionally, a second cutting groove is arranged on the first surface and / or the second surface.

[0016] Optionally, at least two second cutting grooves are arranged on the first surface and / or the second surface.

[0017] The at least two second cutting grooves are arranged along a first direction and distributed along a second direction, and the first direction forms an angle with the second direction.

[0018] Optionally, the second cutting groove is arranged around a preset area.

[0019] Optionally, a through hole is arranged on the flexible circuit board, and the through hole forms the preset area.

[0020] A second aspect of the present disclosure provides a terminal device including the flexible circuit board of the first aspect.

[0021] Optionally, the terminal further includes a module housing formed with an accommodating cavity open at one end.

[0022] The module housing is connected to the flexible circuit board, and the circuit board blocks the accommodating cavity.

[0023] The flexible circuit board has a second cutting groove, and the second cutting groove is arranged on a portion of the first surface and / or the second surface corresponding to the accommodating cavity.

[0024] Optionally, the second cutting groove is arranged parallel to an inner wall of the accommodating cavity.

[0025] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects:

[0026] The flexible circuit board can be fixed on an installation area that is not flat enough, for example, an installation area with protrusions or recesses. Moreover, by arranging the first cutting groove on the side surface of the flexible circuit board, the tension of the side surface of the flexible circuit board is improved, and the bending performance of the flexible circuit board is optimized. In this case, the flexible circuit board is more likely to produce side surface bending deformation, so that the side surface of the flexible circuit board can be fitted to the curved installation area. In this way, the flexible circuit board can be bent and fixed in the installation area, reducing the requirements for the space size and flatness of the installation area. Further, the limitation on the internal space of the terminal device using the flexible circuit board is reduced, and the design and assembly difficulty of the terminal device is reduced.

[0027] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and serve to explain the principles of the present disclosure, in which, like reference numerals designate corresponding parts throughout the several views.

[0029] Figure 1 is a schematic view of a flexible circuit board according to an exemplary embodiment;

[0030] Figure 2 is a schematic view of a structure of a flexible circuit board according to another exemplary embodiment;

[0031] Figure 3 is a schematic view of a partial structure of a flexible circuit board according to an exemplary embodiment;

[0032] Figure 4 is a schematic view of a structure of a flexible circuit board according to another exemplary embodiment;

[0033] Figure 5 is a schematic view of a structure of a flexible circuit board according to another exemplary embodiment;

[0034] Figure 6 is a schematic view of a structure of a flexible circuit board according to another exemplary embodiment;

[0035] Figure 7 is a schematic view of a structure of a flexible circuit board according to another exemplary embodiment;

[0036] Figure 8 is a schematic view of a structure of a flexible circuit board according to another exemplary embodiment;

[0037] Figure 9 is a schematic view of a structure of a flexible circuit board and a module case in a terminal according to an exemplary embodiment.

[0038] The reference signs in the drawings mean:

[0039] 1, first face;

[0040] 2, second face;

[0041] 3, side face;

[0042] 41, first cut groove;

[0043] 411, inner wall;

[0044] 412, opening;

[0045] 42, second cut groove;

[0046] 5. module housing;

[0047] 51. accommodating cavity. DETAILED DESCRIPTION

[0048] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, like reference numerals refer to like elements, unless the context clearly dictates otherwise. The following exemplary embodiments described herein represent the best currently known modes of implementing the present disclosure. However, the work of the inventors is set forth in this patent document in full, and it is understood that no limitations as to implied conditions of devices or processes are intended or will be inferred unless otherwise explicitly indicated by the language hereof.

[0049] Figure 1 is a schematic view of a flexible circuit board according to an exemplary embodiment. As shown in Figure 1 The present embodiment provides a flexible circuit board, which includes a first surface 1, a second surface 2, and a side surface 3. The first surface 1 and the second surface 2 are oppositely arranged, and the first surface 1 and / or the second surface 2 are configured to arrange electronic devices. The side surface 3 connects the first surface 1 and the second surface 2, and a first cut groove 41 is arranged on the side surface 3. The depth of the first cut groove 41 is less than the width of the flexible circuit board. It can be understood that the first surface 1 and / or the second surface 2 are parts of the flexible circuit board configured to arrange electronic devices such as wiring, integrated chips, etc.

[0050] The flexible circuit board can be fixed on an uneven mounting area, such as a mounting area with protrusions or recesses. Moreover, by arranging the first cut groove 41 on the side surface 3 of the flexible circuit board, the side surface 3 tension of the flexible circuit board is improved, and the bending performance of the flexible circuit board is optimized. In this case, the flexible circuit board is more likely to produce side surface bending deformation, so that the side surface 3 of the flexible circuit board can be fitted to the curved mounting area. In this way, the flexible circuit board can be bent and fixed in the mounting area, reducing the requirements for the space size and flatness of the mounting area. Moreover, the depth of the first cut groove 41 is less than the width of the flexible circuit board, i.e., the first cut groove 41 does not penetrate the flexible circuit board, avoiding the first cut groove 41 being too deep to cause the flexible circuit board to break and affect its normal use.

[0051] The flexible circuit board provided by the present embodiment has low requirements for the mounting area, thus reducing the limitations on the internal space of the terminal device using the flexible circuit board, and reducing the design and assembly difficulty of the terminal device.

[0052] Regarding the distribution manner of the first cut groove 41, in one embodiment, as shown in Figure 1 at least two first cut grooves 41 are arranged on the side surface 3, and the at least two first cut grooves 41 are arranged along the thickness direction of the flexible circuit board and arranged and distributed along the length and / or width direction of the flexible circuit board.

[0053] The first slits 41 are arranged along the thickness direction of the flexible circuit board, so that when the flexible circuit board is bent, the first slits 41 on the side surface 3 can be as much as possible to open, which helps to increase the bending degree of the flexible circuit board to adapt to different installation conditions. And by arranging a plurality of first slits 41 arranged along the length direction of the flexible circuit board, the internal stress of the flexible circuit board when bent can be dispersed, avoiding stress concentration in one point to cause the flexible circuit board to tear, optimizing the bending performance of the flexible circuit board under the premise of ensuring the safety of the equipment.

[0054] Figure 2 is a structural schematic diagram of a flexible circuit board according to another exemplary embodiment. In this embodiment, further as shown in Figure 2 The first slits 41 are arranged on the two opposite side surfaces 3. By arranging the first slits 41 on the two opposite side surfaces 3, the tension of the two side surfaces 3 can be improved respectively. When the flexible circuit board is bent towards one side, the first slits 41 on one side surface 3 are squeezed and contracted, and the first slits 41 on the opposite side surface 3 are stretched and opened, so that the flexible circuit board presents a stable bending state.

[0055] And by arranging the first slits 41 on the two opposite side surfaces 3, the elasticity of the flexible circuit board can be increased, so that the flexible circuit board is more prone to tensile or compressive deformation, further improving the adaptability to different size installation controls.

[0056] In this embodiment, the first slits 41 can be arranged staggered on the two opposite side surfaces 3. The staggered arrangement of the first slits 41 can avoid the occurrence of a part of the flexible circuit board with a sudden size reduction, thereby avoiding the occurrence of a mechanically weak part and ensuring the structural stability.

[0057] Figure 3 is a partial structural schematic diagram of a flexible circuit board according to an exemplary embodiment. Regarding the optional form of the first slits 41, in one embodiment, as shown in Figure 3As shown, the first cut groove 41 communicates with the first surface 1 and / or the second surface 2. When the first cut groove 41 communicates with the first surface 1 and the second surface 2, the first cut groove 41 penetrates the flexible circuit board in the thickness direction, and the portions of the side surface 3 close to the first surface 1 and the second surface 2 can be bent to a large extent. In this case, the first cut groove 41 includes an arc-shaped inner wall 411, and the inner wall 411 extends to the first surface 1 and / or the second surface 2 and forms an arc-shaped opening 412 on the first surface 1 and / or the second surface 2. The arc-shaped inner wall 411 helps to uniformly distribute the stress at the first cut groove 41, avoiding the tearing of the flexible circuit board caused by stress concentration. Similarly, the arc-shaped opening 412 formed by the arc-shaped inner wall 411 on the first surface 1 and / or the second surface 2 also avoids the tearing of the flexible circuit board from the opening 412 when bending or stretching, ensuring the safety of the device.

[0058] In one embodiment, electronic devices are arranged on the first surface 1 and / or the second surface 2, and the depth of the first cut groove 41 is less than the distance from the side surface 3 where the first cut groove 41 is located to the electronic devices. The optional electronic devices include wiring, solder joints, chips, etc. In this case, the electronic devices are prevented from crossing the first cut groove 41, affecting the stability of the connection between the electronic devices and the first surface 1 and / or the second surface 2.

[0059] Figures 4-8 are structural schematic diagrams of flexible circuit boards according to different exemplary embodiments. In one embodiment, as shown in Figure 4 A second cut groove 42 is arranged on the first surface 1 and / or the second surface 2. The second cut groove 42 improves the surface tension of the first surface 1 and / or the second surface 2, making the first surface 1 and / or the second surface 2 more likely to be bent or stretched to fit the uneven mounting area, achieving stable installation of the flexible circuit board.

[0060] In one embodiment, as shown in FIG. 4, at least two second cut grooves 42 are arranged on the first surface 1 and / or the second surface 2, the second cut grooves 42 are arranged in a first direction and arranged and distributed in a second direction, and the first direction and the second direction form an angle. In this embodiment, the cutting direction of the second cut groove 42 is different from the arrangement direction, for example, the second cut groove 42 is arranged in the width direction of the flexible circuit board and arranged and distributed in the length direction of the flexible circuit board. In this case, the second cut groove 42 can increase the stretching performance of the flexible circuit board in the second direction. When in use, the flexible circuit board can be connected to components far away by stretching the flexible circuit board, further reducing the requirements of the flexible circuit board for the mounting space and helping to reduce the difficulty of internal space planning of the terminal device.

[0061] In one embodiment, as shown in Figure 5As shown, the second slits 42 are distributed around the preset region. The second slits 42 distributed around the preset region help the flexible circuit board to produce convex deformation or concave deformation centered on the preset region, so that the flexible circuit board can be attached to the mounting region with convex or concave structure.

[0062] As an optional mode, as shown in Figure 5 The second slits 42 are distributed around the preset region. It can be understood that the closer to the preset region, the closer the distance between adjacent second slits 42, and the stronger the deformation ability of the flexible circuit board. When the mounting region has a convex structure or a concave structure, the central part of the convex or concave structure has the largest curvature, so the second slits 42 distributed in this divergent manner can better adapt to the convex or concave structure, so that the flexible circuit board is attached to the mounting region.

[0063] As an optional mode, the second slits 42 are distributed around the preset region. Optionally, as shown in Figure 6 At least two annular second slits 42 are provided on the flexible circuit board, and the annular second slits 42 are concentrically distributed around the preset region.

[0064] The annular second slits 42 can be closed annular grooves, such as circular rings, elliptical rings, square rings, etc.; or the second slits 42 are annular grooves with openings. When the second slits 42 are annular grooves with openings, the openings of the second slits 42 can be provided with wiring or solder joints, etc. The second slits 42 concentrically distributed around the preset region can more uniformly enhance the deformation ability of the flexible circuit board, avoid stress concentration when the flexible circuit board deforms, and optimize the structural stability of the flexible circuit board.

[0065] Optionally, as shown in Figure 7 The connecting lines of adjacent second slits 42 are concentrically distributed around the preset region. The second slits 42 can be a plurality of short-line-type slits distributed around the preset region. In this case, the second slits 42 also help the flexible circuit board to produce convex deformation or concave deformation centered on the preset region.

[0066] In an embodiment, as shown in Figure 8 In an embodiment, a through hole penetrating the first surface 1 and the second surface 2 is provided on the flexible circuit board, and the through hole forms the preset region. The through hole can also improve the ductility of the flexible circuit board and increase the deformation degree. For example, the flexible circuit board can produce convex deformation or concave deformation centered on the through hole. And the second slits 42 distributed around the through hole can further optimize the improvement effect and improve the tension of the flexible circuit board, so that the flexible circuit board adapts to different mounting conditions.

[0067] The through hole can have other functions, for example, when the flexible circuit board is applied to a microphone module, the through hole is a sound collecting hole; when the flexible circuit board is applied to a camera module, the through hole can be a light transmitting hole, etc. In this case, the existing structure on the flexible circuit board 2 can be used to avoid complicating the module structure.

[0068] In one embodiment, the second cut groove 42 includes an arc-shaped end. The arc-shaped end helps to uniformly distribute stress and avoid tearing along the second cut groove 42 when the flexible circuit board deforms, thereby ensuring the safety of the device. Moreover, the number of the second cut groove 42 is not limited, and it can be understood that the more the number of the second cut groove 42, the stronger the optimization effect on the deformation ability of the flexible circuit board.

[0069] It should be noted that since the first surface 1 and / or the second surface 2 are parts of the flexible circuit board for setting electronic devices, the second cut groove 42 is arranged on the part of the first surface 1 and / or the second surface 2 where no electronic device is arranged, thereby avoiding affecting the normal use of the circuit board.

[0070] The second aspect of the embodiments of the present disclosure provides a terminal device including the flexible circuit board provided in the first aspect. The terminal device can be a mobile phone, a computer, a notebook computer, a digital broadcast electronic device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc. Since the terminal device has the flexible circuit board provided in the first aspect, the internal space planning of the terminal device is less limited, and the design and assembly difficulty is lower.

[0071] Figure 9 is a structural schematic diagram of a flexible circuit board and a module housing in a terminal according to an exemplary embodiment. In one embodiment, as shown in Figure 9 The terminal device further includes a module housing 5, and the module housing 5 forms a receiving cavity 51 with an open end. The module housing 5 is connected to the flexible circuit board, and the flexible circuit board seals the receiving cavity 51. The flexible circuit board includes a second cut groove 42 arranged on the part of the first surface 1 and / or the second surface 2 corresponding to the receiving cavity 51.

[0072] The second cut groove 42 makes the part of the flexible circuit board corresponding to the receiving cavity 51 prone to convex or concave deformation, so that the flexible circuit board can be stably attached to the mounting area. The module housing 5 can be a housing of a microphone module, a camera module, or an infrared sensor module, and the embodiments of the present disclosure do not make specific limitations.

[0073] Optionally, the second cut groove 42 is arranged parallel to the inner wall of the accommodating cavity 51. For example, when the accommodating cavity 51 is a cylindrical cavity, the inner wall of the accommodating cavity 51 is an arc surface, and the second cut groove 42 can be an arc groove or a circular ring groove arranged parallel to the inner wall of the accommodating cavity 51. When the accommodating cavity 51 is a cubic cavity, the inner wall of the accommodating cavity 51 is a plane, and the second cut groove 42 can be a linear groove or a square ring groove arranged parallel to the inner wall of the accommodating cavity 51.

[0074] In this case, the distance between different positions of the same second cut groove 42 and the inner wall of the accommodating cavity 51 is the same, so that uniform deformation can be generated at the second cut groove 42 when the flexible circuit board appears convex deformation or concave deformation, avoiding uneven stress distribution to cause the flexible circuit board to tear along the second cut groove 42, and ensuring the use safety of the terminal device.

[0075] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses or adaptations of the disclosure other than those expressly disclosed herein. It is to be understood that the disclosure is not limited to the particular algorithms or heuristics described, as such can, of course, vary. The specification and examples are, accordingly, to be regarded in an illustrative rather than a restrictive sense, the true scope and spirit of the disclosure being indicated by the claims.

[0076] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A flexible circuit board, characterized by, include: First side, second side, and side view; The first surface and the second surface are arranged opposite to each other, and the first surface and / or the second surface are used to mount electronic devices; The side surface connects the first surface and the second surface; At least two first grooves are provided on the two oppositely arranged sides, and the depth of the first grooves is less than the width of the flexible circuit board; At least two second grooves are provided on the first surface and / or the second surface; At least two second cutting grooves are arranged along a first direction and distributed along a second direction, with the first direction and the second direction forming an angle; The second groove is provided around a preset area, which is used to adapt to the protruding or recessed structure of the mounting area of ​​the flexible circuit board.

2. The flexible circuit board of claim 1, wherein, At least two of the first grooves are provided along the thickness direction of the flexible circuit board and are distributed along the length and / or width direction of the flexible circuit board.

3. The flexible circuit board of claim 1, wherein, The first groove includes an arc-shaped inner wall that extends to the first surface and / or the second surface, and forms an arc-shaped opening on the first surface and / or the second surface.

4. The flexible circuit board of claim 1, wherein, An electronic device is provided on the first surface and / or the second surface, and the depth of the first groove is less than the distance from the side where the first groove is located to the electronic device.

5. The flexible circuit board of claim 1, wherein, Through holes are provided on the flexible circuit board, and the through holes form the preset area.

6. A terminal device, characterized by comprising: The flexible circuit board includes any one of claims 1 to 5.

7. The terminal device according to claim 6, characterized by The terminal also includes a module housing, the module housing having an open-end receiving cavity; The module housing is connected to the flexible circuit board, and the circuit board seals the receiving cavity; The flexible circuit board has a second groove, and the second groove is disposed on the portion of the first surface and / or the second surface corresponding to the receiving cavity.

8. The terminal device according to claim 7, characterized by The second groove is provided parallel to the inner wall of the receiving cavity.

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