CN220985925U - FPC board and electronic equipment - Google Patents

Abstract

The embodiment of the utility model relates to the technical field of electronic equipment, in particular to an FPC board and electronic equipment, comprising a first hard board area; a second hard board area connected to the first hard board area; the flexible region, the one end of flexible region is connected first hard board region, the other end of flexible region is connected the second hard board region, the flexible region is located between first hard board region and the second hard board region, the flexible region includes a plurality of combination layers, and the interval is preset the space between every combination layer. Through the mode, the embodiment of the utility model can reduce the breakage of the FPC board caused by bending.

Description

FPC board and electronic equipment

Technical Field

The embodiment of the utility model relates to the technical field of electronic equipment, in particular to an FPC board.

Background

The FPC board is indispensable in electronic products, has the characteristics of flexibility and easy bending, and is used for connecting a main circuit board with a secondary circuit board and connecting a main board with functional parts such as keys, cameras and the like. In the prior art, cameras of some electronic products are designed to be of an inward-shrinking or stretching structure, and at this time, in the inward-shrinking or stretching process of the cameras, the FPC board connected with the cameras is bent and stretched.

The inventors of the present utility model found that, in the process of implementing the present utility model: in the electronic product used for a long time, in the process of shrinking or stretching out the camera, the FPC board is easy to bend and has fracture conditions, the service life of the camera is influenced, and the camera is inconvenient.

Disclosure of utility model

In view of the above, embodiments of the present utility model provide an FPC board and an electronic apparatus, which overcome or at least partially solve the above problems.

According to an aspect of the present utility model, there is provided an FPC board including a first hard board region; a second hard board area connected to the first hard board area; the flexible region, the one end of flexible region is connected first hard board region, the other end of flexible region is connected the second hard board region, the flexible region is located between first hard board region and the second hard board region, the flexible region includes a plurality of combination layers, and the interval is preset the space between every combination layer.

In an alternative manner, the plurality of combined layers includes a first combined layer, a second combined layer, and a third combined layer, where the first combined layer, the second combined layer, and the third combined layer are arranged along a first direction, the first combined layer and the second combined layer are spaced apart by a first gap along the first direction, and the second combined layer and the third combined layer are spaced apart by a second gap.

In an alternative manner, the first combined layer includes a first base layer, a first adhesive layer, a first metal layer, a second adhesive layer, and a second base layer, where the first base layer, the first adhesive layer, the first metal layer, the second adhesive layer, and the second base layer are stacked along a first direction, the first adhesive layer is used to connect the first base layer and the first metal layer, and the second adhesive layer is used to connect the first metal layer and the second base layer.

In an alternative manner, the second combined layer includes a third base layer, a third adhesive layer, a second metal layer, a fourth adhesive layer, and a fourth base layer, where the third base layer, the third adhesive layer, the second metal layer, the fourth adhesive layer, and the fourth base layer are stacked along a first direction, the third adhesive layer is used to connect the third base layer and the second metal layer, and the fourth adhesive layer is used to connect the second metal layer and the fourth base layer.

In an alternative manner, the first combination layer and the third combination layer are both power lines, and the second combination layer is a signal line.

In an alternative manner, the FPC board includes a plurality of connection vias disposed at the connection between the first hard board region and the flexible region, and/or at the connection between the second hard board region and the flexible region.

In an alternative manner, the FPC board further includes a mesh adhesive layer, where the mesh adhesive layer wraps around a connection between the first hard board region and the flexible region, and/or a connection between the second hard board region and the flexible region.

In an alternative manner, the pitch of the first voids in a second direction is equal to the pitch of the second voids in a second direction, the second direction being perpendicular to the first direction.

In an alternative manner, the number of the first metal layers is a plurality of layers, and the plurality of first metal layers are stacked on each other along the first direction.

According to another aspect of the present utility model, there is provided an electronic device including a housing, a control assembly, a camera, and the FPC board as described above, the housing being provided with a housing cavity and an opening communicating with the housing cavity, the control assembly, the camera, and the FPC board being disposed in the housing cavity, one end of the FPC board being connected to the control assembly, the other end of the FPC board being connected to the camera, and the camera being slidable in the housing cavity toward the opening.

In an alternative manner, the electronic device includes a sliding component, the sliding component is disposed in the accommodating cavity, and the sliding component is used for driving the camera to slide in the accommodating cavity; a sliding rail is arranged in the accommodating cavity; the sliding assembly comprises a sliding seat, a sliding groove is formed in the sliding seat, the sliding groove is arranged on the sliding rail, the camera is arranged on the sliding seat, and the sliding seat can slide along the sliding rail.

In an optional mode, the sliding assembly further comprises a first limiting rod and a second limiting rod, the first limiting rod and the second limiting rod are both arranged in the accommodating cavity, the first limiting rod is close to the upper side wall of the accommodating cavity, the second limiting rod is close to the lower side wall of the accommodating cavity, the second limiting rod is located on the sliding seat, the first limiting rod and the second limiting rod are arranged at intervals, the first hard plate area is located between the first limiting rod and the upper side wall of the accommodating cavity, the second hard plate area is located between the second limiting rod and the lower side wall of the accommodating cavity, and the flexible area is at least partially located between the first limiting rod and the second limiting rod.

The embodiment of the utility model has the beneficial effects that: unlike the prior art, embodiments of the present utility model provide a first stiff board area, a second stiff board area, and a flexible area. The flexible area comprises a plurality of combined layers, gaps are reserved between each combined layer at intervals, the flexible area on the flexible area can be utilized for bending when the FPC board needs to be bent, and preset gaps are further formed in the flexible area and can be used for facilitating bending of the FPC board, signal interference between the combined layers can be reduced, and in this way, the arrangement can ensure that the situation that the FPC board is broken when the FPC board is bent in the shrinking or stretching process is guaranteed, and the service life of the camera is further prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic side view of an overall structure of an FPC board according to an embodiment of the present utility model;

Fig. 2 is a schematic side view of another embodiment of the FPC board according to the embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a flexible region of an FPC board according to an embodiment of the utility model;

FIG. 4 is a side sectional view of the overall structure of the FPC board according to the embodiment of the present utility model;

FIG. 5 is a schematic view of a part of an electronic device according to an embodiment of the present utility model;

Fig. 6 is a schematic view showing another state of a part of the structure of the electronic device according to the embodiment of the present utility model.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

In addition, the technical features mentioned in the different embodiments of the application described below can be combined with one another as long as they do not conflict with one another.

In the prior art, when designing an electronic camera of a high-speed signal interface of an M IP I protocol for a telescopic structure, the system is required to control the wiring differential signal characteristic impedance of an M IP I circuit and the high-speed signal anti-interference problem. On one hand, a reference GND (reference 0 potential) plane of a stable high-speed signal line needs to be added on a wiring to ensure wiring impedance of an M IP I high-speed signal so as to achieve the purpose of ensuring signal quality and working stability, and on the other hand, a shielding layer formed by materials including but not limited to a magnetic film shielding layer, grid copper and the like needs to be added to enhance the purpose of resisting interference, so that the problems of increased thickness, increased hardness, less telescopic times of a telescopic camera, mechanically tired tearing of materials, short service life and the like of the FPC are caused based on the two design requirements. Therefore, how to comprehensively consider the problem that the service life of ten thousands of times can still be realized under the condition of extreme bending, extruding and sliding is the biggest pain point existing in the original technical scheme due to the fact that the high-speed signal of the device works stably and has strong anti-interference capability.

In the prior art, the FPC board comprises an electromagnetic shielding film, P I organic polymer layers, an adhesive layer, a copper layer, P I organic polymer layers, a copper layer, an adhesive layer and a P I organic polymer layer which are sequentially stacked, and the FPC board is too many in lamination, and the positions, where copper wire through holes and electromagnetic film pressing points are arranged at sliding and bending parts in the design, are poor in toughness and high in hardness, and are easy to tear.

Therefore, the applicant thinks that the technical scheme of the application separates the FPC board to form a plurality of areas, and gaps are arranged among the plurality of interlayer, so that the gap can facilitate bending of the FPC board in the bending process of the FPC board, and the signal interference problem among the interlayer can be reduced.

Referring to fig. 1 and 2, the fpc board 1000 includes a first hard board area 10, a second hard board area 20, a flexible area 30, connection vias 40, and a mesh adhesive layer 50. Wherein, the first hard board area 10 is connected to one end of the flexible area 30, the second hard board area 20 is connected to the other end of the flexible area 30, the flexible area 30 is located between the first hard board area 10 and the second hard board area 20, the connection via 40 is disposed at the connection between the first hard board area 10 and the flexible area 30, and/or the connection via 40 is disposed at the connection between the second hard board area 20 and the flexible area 30, the mesh glue layer 50 is wrapped at the connection between the first hard board area 10 and the flexible area 30, and/or the mesh glue layer 50 is wrapped at the connection between the second hard board area 20 and the flexible area 30. The first hard board area 10, the second hard board area 20, the flexible area 30, the connection via 40, and the grid glue layer 50 are specifically described below.

As shown in fig. 1 and 3, the flexible area 30 includes a plurality of combined layers 31, and a preset gap 30a is formed between each combined layer, and the specific size of the gap is not limited in the present application. The plurality of combined layers includes a first combined layer 311, a second combined layer 312 and a third combined layer 313, the first combined layer 311, the second combined layer 312 and the third combined layer 313 are arranged along a first direction, a first gap 30aa is formed between the first combined layer 311 and the second combined layer 312 along the first direction, and a second gap 30ab is formed between the second combined layer 312 and the third combined layer 313. The bending stress or other stress generated on the flexible region 30 during bending or moving is preferentially generated on the first combined layer 311 and the third combined layer 313, and the first combined layer 311 and the third combined layer 313 can protect the second combined layer 312. Optionally, the first combined layer 311 and the third combined layer 313 are both power lines, the second combined layer 312 is a signal line, and the power lines are preferentially damaged, so as to reduce the damage of the signal line. Optionally, the spacing between the first gaps 30aa along the second direction is equal to the spacing between the second gaps 30ab along the second direction, which is set so that the stress on the first combined layer 311 and the third combined layer 313 is not uniform during the bending or moving process of the flexible region 30. The second direction is perpendicular to the first direction, and in the application, the first direction is defined as the length direction of the FPC board, and the second direction is defined as the thickness direction of the FPC board.

In some embodiments, the first combined layer 311 includes a first base layer 3111, a first adhesive layer 3112, a first metal layer 3113, a second adhesive layer 3114, and a second base layer 3115, the first base layer 3111, the first adhesive layer 3112, the first metal layer 3113, the second adhesive layer 3114, and the second base layer 3115 are stacked along a first direction, the first adhesive layer 3112 is used to connect the first base layer 3111 and the first metal layer 3113, and the second adhesive layer 3114 is used to connect the first metal layer 3113 and the second base layer 3115. Optionally, the first base layer 3111 and the second base layer 3115 are made of polyimide (P I organic polymer material), the first metal layer 3113 is made of copper, and the first adhesive layer 3112 and the second adhesive layer 3114 are both adhesives. It should be noted that: the structure of the third combined layer 313 may refer to the structure of the first combined layer 311, which is not described herein.

In some embodiments, the second combined layer 312 includes a third base layer 3121, a third adhesive layer 3122, a second metal layer 3123, a fourth adhesive layer 3124, and a fourth base layer 3125, the third base layer 3121, the third adhesive layer 3122, the second metal layer 3123, the fourth adhesive layer 3124, and the fourth base layer 3125 being stacked along the first direction, the third adhesive layer 3122 being used to connect the third base layer 3121 and the second metal layer 3123, the fourth adhesive layer 3124 being used to connect the second metal layer 3123 and the fourth base layer 3125. Optionally, the manufacturing materials of the third base layer 3121 and the fourth base layer 3125 are polyimide (P I organic polymer materials), the manufacturing material of the second metal layer 3123 is copper, and the third adhesive layer 3122 and the fourth adhesive layer 3124 are adhesives.

It will be appreciated that: in order to reduce the situation that the first metal layer 3113 and the second metal layer 3123 are broken during bending of the FPC board, so that the FPC board cannot work normally, the number of the first metal layer 3113 and the second metal layer 3123 may be multiple, the first metal layers 3113 and the second metal layer 3123 may be stacked, and the multiple layers of the first metal layers 3113 and the second metal layer 3123 may be stacked, so that even if one of the first metal layer 3113 or the second metal layer 3123 is broken, normal operation of the FPC board is not affected, and normal functional operation of the FPC board is ensured.

As shown in fig. 3 and 4, for the first hard board area 10 and the second hard board area 20, the first hard board area 10 is connected to the second hard board area 20 through the flexible area 30, and the first hard board area 10 and the second hard board area 20 have the same structure. Because of the connection between the different combined layers of the first and second hard-sheet regions 10, 20 and the flexible region 30, the structure within the first hard-sheet region 10 may refer to the different combined layer structure within the flexible region 30. For example: the first hard board area 10 includes a plurality of combined layers, the combined layers are connected by an adhesive, the structures of the combined layers may be the same or different, and different combined layer structures in the first hard board area 10 are correspondingly connected with different combined layers in the flexible area 30, and the combined layer structure in the first hard board area 10 corresponds to the combined layer structure in the flexible area 30.

For the above-mentioned connection via 40 and the mesh adhesive layer 50, as shown in fig. 2, the connection via 40 is disposed at a connection between the first hard board area 10 and the flexible area 30, and/or the connection via 40 is disposed at a connection between the second hard board area 20 and the flexible area 30, and the mesh adhesive layer 50 is coated at a connection between the first hard board area 10 and the flexible area 30, and/or the mesh adhesive layer 50 is coated at a connection between the second hard board area 20 and the flexible area 30. Alternatively, the number of the connection vias 40 may be plural. The bonding force between the connection via 40 and the mesh adhesive layer 50 can be increased, and at the same time, the connection via 40 can be damaged preferentially in the bending or tearing process of the FPC board, so as to reduce damage to the signal lines on the FPC board.

In the embodiment of the present utility model, a first hard-sheet region 10, a second hard-sheet region 20, and a flexible region 30 are provided. The second hard board area 20 is connected with the first hard board area 10, one end of the flexible area 30 is connected with the first hard board area 10, the other end of the flexible area 30 is connected with the second hard board area 20, the flexible area 30 is located between the first hard board area 10 and the second hard board area 20, the flexible area 30 comprises a plurality of combined layers, a preset gap is reserved between each combined layer, the flexible area 30 on the flexible area 30 can be utilized for bending when the FPC board needs to be bent, and the flexible area 30 is also provided with a preset gap, so that the bending of the FPC board can be facilitated, signal interference between the combined layers can be reduced, the situation that the FPC board is broken when the FPC board is bent in the shrinking or stretching process can be guaranteed, the service life of the camera 3000 is further prolonged, and the convenience is realized.

The present utility model further provides an embodiment of an electronic device, as shown in fig. 5 and 6, the electronic device includes a housing 2000, a control assembly (not shown), a camera 3000, and an FPC board 1000 as described above, where the housing 2000 is provided with a receiving cavity 2000a and an opening 2000b communicating with the receiving cavity 2000a, the control assembly, the camera 3000, and the FPC board are all disposed in the receiving cavity 2000a, one end of the FPC board is connected to the control assembly, the other end of the FPC board is connected to the camera 3000, and the camera 3000 can slide in the receiving cavity 2000a toward the direction of the opening 2000b, so as to enable the camera 3000 to extend out of the housing 2000 or retract into the housing 2000. The functions and structures of the FPC board may be referred to the above embodiments, and will not be described herein. It will be appreciated that: the electronic device includes, but is not limited to, a mobile phone, a tablet, a notebook computer, etc.

In some embodiments, the electronic device further includes a sliding component 4000, as shown in fig. 5 and 6, where the sliding component 4000 is disposed in the accommodating cavity 2000a, the sliding component 4000 is configured to drive the camera 3000 to slide in the accommodating cavity 2000a, a sliding rail (not shown) is disposed in the accommodating cavity 2000a, the sliding component 4000 includes a sliding seat 4001, a sliding groove (not shown) is disposed on the sliding seat 4001, the sliding groove is mounted on the sliding rail, the camera 3000 is disposed on the sliding seat 4001, and the sliding seat 4001 may slide along the sliding rail, so as to drive the camera 3000 located thereon to slide.

In some embodiments, the sliding assembly 4000 further includes a first limit lever 4002 and a second limit lever 4003, as shown in fig. 1, the first limit lever 4002 and the second limit lever 4003 are both disposed in the accommodating cavity 2000a, the first limit lever 4002 is disposed near an upper side wall of the accommodating cavity 2000a, the second limit lever 4003 is disposed near a lower side wall of the accommodating cavity 2000a, an interval is disposed between the first limit lever 4002 and the second limit lever 4003, the first hard plate region 10 is disposed between the first limit lever 4002 and an upper side wall of the accommodating cavity 2000a, the second hard plate region 20 is disposed between the second limit lever 4003 and a lower side wall of the accommodating cavity 2000a, and the flexible region 30 is at least partially disposed between the first limit lever 4002 and the second limit lever 4003. The first limit rod 4002 and the second limit rod 4003 can limit different areas on the FPC board, so that the FPC board is limited in a preset space or a preset position, and the influence on other electronic elements in the electronic equipment caused by the reduction of the bending of the FPC board is avoided.

In some embodiments, a first cylindrical protrusion 4002a is further disposed on the end of the first stop lever 4002 near the camera 3000, and soft foam (not labeled) is further coated on the first cylindrical protrusion 4002a, so that contact abrasion between the FPC board and the first stop lever 4002 during bending can be reduced. Optionally, the end of the second stop lever 4003 facing away from the camera 3000 is also provided with a second cylindrical protrusion 4003a, and the second cylindrical protrusion 4003a is coated with soft foam, so that contact wear between the FPC board and the second stop lever 4003 in the bending process can be reduced.

In some embodiments, the electronic device further includes a buffer tilting table 5000, the buffer tilting table 5000 is disposed in the accommodating cavity 2000a, the buffer tilting table 5000 is located near one end of the second limit lever 4003, which faces away from the camera 3000, the buffer tilting table 5000 is tilted toward the lower sidewall direction of the accommodating cavity 2000a, and the buffer tilting table 5000 can ensure that a bending angle of the FPC board when bending is within a preset range, and provides more free deformation space for the FPC board.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (12)

1. An FPC board, characterized by comprising:

A first hard plate area;

A second hard board area connected to the first hard board area;

The flexible region, the one end of flexible region is connected first hard board region, the other end of flexible region is connected the second hard board region, the flexible region is located between first hard board region and the second hard board region, the flexible region includes a plurality of combination layers, and the interval is preset the space between every combination layer.

2. The FPC board according to claim 1, characterized in that,

The plurality of combined layers comprise a first combined layer, a second combined layer and a third combined layer, the first combined layer, the second combined layer and the third combined layer are arranged along a first direction, a first gap is formed between the first combined layer and the second combined layer along the first direction, and a second gap is formed between the second combined layer and the third combined layer.

3. The FPC board according to claim 2, characterized in that,

The first combined layer comprises a first base layer, a first bonding layer, a first metal layer, a second bonding layer and a second base layer, wherein the first base layer, the first bonding layer, the first metal layer, the second bonding layer and the second base layer are stacked along a first direction, the first bonding layer is used for connecting the first base layer and the first metal layer, and the second bonding layer is used for connecting the first metal layer and the second base layer.

4. The FPC board according to claim 2, characterized in that,

The second combined layer comprises a third base layer, a third bonding layer, a second metal layer, a fourth bonding layer and a fourth base layer, wherein the third base layer, the third bonding layer, the second metal layer, the fourth bonding layer and the fourth base layer are stacked along the first direction, the third bonding layer is used for connecting the third base layer and the second metal layer, and the fourth bonding layer is used for connecting the second metal layer and the fourth base layer.

5. The FPC board according to claim 2, characterized in that,

The first combination layer and the third combination layer are both power lines, and the second combination layer is a signal line.

6. The FPC board according to claim 2, characterized in that,

The flexible printed circuit board comprises a plurality of connecting through holes, wherein the connecting through holes are arranged at the connecting positions between the first hard board area and the flexible area, and/or the connecting positions between the second hard board area and the flexible area.

7. The FPC board according to claim 2, characterized in that,

The FPC board further comprises a grid adhesive layer, wherein the grid adhesive layer is coated at the joint between the first hard board area and the flexible area, and/or the joint between the second hard board area and the flexible area.

8. The FPC board according to claim 2, characterized in that,

The spacing of the first gaps along the second direction is equal to the spacing of the second gaps along the second direction, and the second direction is perpendicular to the first direction.

9. The FPC board according to claim 3, characterized in that,

The number of the first metal layers is multiple, and the multiple first metal layers are stacked on each other along a first direction.

10. An electronic device, comprising a housing, a control assembly, a camera and the FPC board according to any one of claims 1 to 9, wherein the housing is provided with a housing cavity and an opening communicating with the housing cavity, the control assembly, the camera and the FPC board are all arranged in the housing cavity, one end of the FPC board is connected with the control assembly, the other end of the FPC board is connected with the camera, and the camera can slide in the housing cavity towards the opening direction.

11. The electronic device of claim 10, wherein the electronic device comprises a memory device,

The camera comprises a sliding component, wherein the sliding component is arranged in the accommodating cavity and is used for driving the camera to slide in the accommodating cavity;

A sliding rail is arranged in the accommodating cavity;

The sliding assembly comprises a sliding seat, a sliding groove is formed in the sliding seat, the sliding groove is arranged on the sliding rail, the camera is arranged on the sliding seat, and the sliding seat can slide along the sliding rail.

12. The electronic device of claim 11, wherein the electronic device comprises a memory device,

The sliding assembly further comprises a first limiting rod and a second limiting rod, the first limiting rod and the second limiting rod are arranged in the accommodating cavity, the first limiting rod is close to the upper side wall of the accommodating cavity, the second limiting rod is close to the lower side wall of the accommodating cavity, the second limiting rod is located on the sliding seat, the first limiting rod and the second limiting rod are arranged at intervals, a first hard plate area is located between the first limiting rod and the upper side wall of the accommodating cavity, a second hard plate area is located between the second limiting rod and the lower side wall of the accommodating cavity, and the flexible area is located at least partially between the first limiting rod and the second limiting rod.