CN207354344U - A kind of ground plane, flexible PCB and mobile terminal - Google Patents
A kind of ground plane, flexible PCB and mobile terminal Download PDFInfo
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- CN207354344U CN207354344U CN201720912112.3U CN201720912112U CN207354344U CN 207354344 U CN207354344 U CN 207354344U CN 201720912112 U CN201720912112 U CN 201720912112U CN 207354344 U CN207354344 U CN 207354344U
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- ground plane
- engraved structure
- flexible pcb
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- cabling
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Abstract
The utility model provides a kind of ground plane, flexible PCB and mobile terminal, and the ground plane specifically includes：Ground plane body and the hollow-out parts being staggered on the ground plane body；Wherein, the hollow-out parts include that shape is identical and the horizontal engraved structure being equally spaced；The engraved structure structure of adjacent lines is adapted, and the line number of the engraved structure is even number.The ground plane that the utility model embodiment provides can improve the signal transmission quality of cabling, moreover, the pliability of the ground plane can be lifted, avoid the ground plane from being broken caused by pullling or bending.
Description
Technical field
Field of communication technology is the utility model is related to, more particularly to a kind of ground plane, flexible PCB and mobile terminal.
Background technology
Flexible PCB is a kind of special printed circuit board, not only with relatively thin insulation thickness, relatively low package dimension
And encapsulation weight, moreover, the densification of electronic circuit can be realized, have while narrow space is carried out and largely connected up
Higher reliability and mobility.Therefore, flexible PCB can adapt to light, thin, the short demand of electronic product, extensively should
In the mobile terminals such as mobile phone, palm PC, digital camera.
The signals layer of flexible PCB can usually include routing layer and ground plane, in practical applications, flexible PCB
Generally require repeatedly to be bent, and flexible PCB by repeatedly bending after, bending region be easily broken off so that
The service life of flexible PCB reduces.In order to improve the pliability in flexible PCB bending region, prevent bending region because drawing
The fracture occurred is pulled or bends, at present, the corresponding ground plane generally use mesh design in flexible PCB bending region.
For flexible PCB when carrying out signal transmission, generally use differential lines carry out the transmission of differential signal, using difference
When line carries out signal transmission, if the resistance difference in two differential lines is larger, the problems such as easily causing signal interference, difference is influenced
Signal transmission quality on separated time.In practical applications, the impedance magnitude of cabling and the contact area of cabling and ground plane are into anti-
The relation of ratio, therefore, controls differential lines and the contact area uniformity of ground plane to improve the uniformity of difference line impedence.
Reference Fig. 1, shows a kind of structure diagram of existing ground plane, and the ground plane shown in Fig. 1 is interlocked by some
Conducting wire 101 form, wherein, the width of conducting wire 101 is represented with D, and the spacing of conducting wire 101 is represented with M.It will be seen from figure 1 that work as
When vertical direction diverse location, line width W identical differential lines A and B is placed on ground plane, differential lines A and B and conducting wire 101 it
Between contact area it is significantly different, in this way, be easy for causing the resistance difference of differential lines A and B larger so that, influence differential lines A
With the signal transmission quality of B.
The content of the invention
In view of this, in order to solve in existing mobile terminal, the differential lines on flexible PCB bending region are due to resistance
The problem of robust different considerable influence signal transmission quality, the utility model embodiment provides a kind of ground plane, a kind of flexible electrical
Road plate and a kind of mobile terminal.
To solve the above-mentioned problems, on the one hand, the utility model discloses a kind of ground plane, including：Ground plane body and
The hollow-out parts being staggered on the ground plane body；Wherein
The hollow-out parts include that shape is identical and the horizontal engraved structure being equally spaced；
The engraved structure structure of adjacent lines is adapted,
The line number of the engraved structure is even number.
On the other hand, the invention also discloses a kind of flexible PCB, including：Above-mentioned ground plane and routing layer；Its
In
The ground plane is equipped with grounding points；
The routing layer is equipped with board to board connector.
On the one hand, the invention also discloses a kind of mobile terminal, including：Above-mentioned flexible PCB.
The utility model includes advantages below：
The ground plane of the utility model embodiment can specifically include：Ground plane body and it is staggered in the ground plane
Hollow-out parts on body；The engraved structure shape included due to hollow-out parts it is identical and it is horizontal be equally spaced, the described of adjacent lines is engraved
Hollow structure can compensate mutually, and the line number of the engraved structure is even number, when the cabling of two equivalent widths of vertical direction
When being arranged on the ground plane, the position regardless of the cabling, connecing between the cabling and the ground plane body
Contacting surface product can be consistent, so that the impedance on the cabling can also be consistent, in this manner it is possible to improve institute
State the signal transmission quality of cabling.It is additionally, since on the ground plane body and is staggeredly equipped with the hollow-out parts, the hollow-out parts
The pliability of the ground plane can be lifted, avoids the ground plane from being broken caused by pullling or bending.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of existing ground plane；
Fig. 2 is a kind of structure diagram of ground plane of the utility model embodiment one；
Fig. 3 is the schematic diagram that the ground plane engraved structure shown in Fig. 2 compensates mutually；
Fig. 4 is a kind of structure diagram of ground plane of the utility model embodiment two；
Fig. 5 is a kind of structure diagram of flexible PCB of the utility model embodiment；
Fig. 6 is the structure diagram of another flexible PCB of the utility model embodiment.
Embodiment
To enable the above-mentioned purpose of the utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings and have
Body embodiment is described in further detail the utility model.
One of core idea of the utility model is that the ground plane of the utility model embodiment can specifically include：Connect
Stratum-ontology and the hollow-out parts being staggered on the ground plane body；Wherein, the hollow-out parts include that shape is identical and water
The flat engraved structure being equally spaced；The engraved structure of adjacent lines can compensate mutually, and the line number of the engraved structure is even
Number.
Specifically, the engraved structure of adjacent lines can mutually compensate for, refer to two row engraved structures of adjacent lines
When mutually embedded, wherein the engraved structure of a line can be embedded in the gap between the engraved structure of another row just, be formed overall
Structure, that is to say, that in two row engraved structures of adjacent lines, the gap wherein between the engraved structure of a line can be by another
Capable engraved structure compensates.In this way, when the line number of the engraved structure is even number, two equivalent widths of vertical direction
Cabling when being arranged on the ground plane, the contact area of two cablings and the engraved structure can be consistent,
Since the ground plane is made of ground plane body and the engraved structure that is staggered, when two cablings and the hollow out knot
When the contact area of structure can be consistent, the contact area between two cablings and the ground plane body can also protect
Hold consistent.
In the utility model embodiment, due to the engraved structure shape it is identical and it is horizontal be equally spaced, the institute of adjacent lines
Stating engraved structure can compensate mutually, and the line number of the engraved structure is even number, when two equivalent widths of vertical direction
When cabling is arranged on the ground plane, the position regardless of the cabling, between the cabling and the ground plane body
Contact area can be consistent so that the impedance on the cabling can also be consistent, in this manner it is possible to carry
The signal transmission quality of the high cabling.It is additionally, since on the ground plane body and is staggeredly equipped with the hollow-out parts, it is described to engrave
Empty portion can lift the pliability of the ground plane, avoid the ground plane from being broken caused by pullling or bending.
Alternatively, in order to lift the conduction property of the ground plane, in practical applications, the material of the ground plane body
Can be copper, due to the conduction of copper is excellent and price inexpensively, when the material of the ground plane body is copper, both
Good conduction can be kept, and can preferable control cost.Certainly, in practical applications, the ground plane can also
Using other conductive materials, the utility model embodiment is not specifically limited for the material of the ground plane body.
Embodiment one
With reference to Fig. 2, show a kind of structure diagram of ground plane of the utility model embodiment one, can specifically wrap
Include：Ground plane body 201 and the hollow-out parts 202 being staggered on ground plane body 201；Wherein, hollow-out parts 202 include shape
The identical and horizontal engraved structure 2021 being equally spaced；The engraved structure 2021 of adjacent lines can compensate mutually, engraved structure
2021 line number is even number, and the shape of engraved structure 2021 is equilateral hexagon.In the utility model embodiment, work as vertical direction
The cabling A and B of two equivalent widths when being arranged on the ground plane, the position regardless of cabling A and B, cabling A and B
Contact area between ground plane body 201 can be consistent, so that the impedance on cabling A and B can also be protected
Hold unanimously, in this manner it is possible to improve the signal transmission quality of cabling A and B.Moreover, hollow-out parts 201 can lift the ground plane
Pliability, avoid the ground plane from being broken caused by pullling or bending.
With reference to Fig. 3, the schematic diagram that the ground plane engraved structure shown in Fig. 2 compensates mutually is shown, as shown in figure 3, working as phase
When the engraved structure 301 and 302 of adjacent rows is embedded in, engraved structure 301 and 302 can mutually compensate for, in this way, when the two of vertical direction
When the cabling of bar equivalent width is arranged on the ground plane, the position regardless of the cabling, the cabling connects with described
Contact area between the ground plane body on stratum can be consistent, so that the impedance on the cabling can also be protected
Hold consistent.
In the utility model embodiment, when the shape of the engraved structure is equilateral hexagon, in order to enable adjacent layer
Engraved structure 301 and 302 can mutually compensate for, in practical applications, by between the horizontal direction of equilateral hexagon engraved structure
It is arranged to equal value, the row of the engraved structure 301 and 302 of adjacent lines away from W and the length of side L of equilateral hexagon engraved structure
Spacing H can be then configured according to actual conditions.That is, in practical applications, the ground connection of the utility model embodiment
Equilateral hexagon engraved structure in layer, is arranged to equal value, its level side by its horizontal direction spacing W with length of side L
It can be then configured to the occurrence of the line space H of spacing W, length of side L and adjacent lines according to actual conditions, the utility model
Embodiment is not specifically limited for horizontal direction spacing W, length of side L and the line space H of the equilateral hexagon engraved structure.
It is understood that in ground plane shown in Fig. 2 and Fig. 3, the line number of the engraved structure is all 2 rows, and in reality
In the application of border, the line number of the engraved structure can also be other evens number of lines such as 4 rows, 6 rows or 8 rows, the utility model pair
Do not limited in the specific line number of the engraved structure.
To sum up, the utility model embodiment has the following advantages：
In the utility model embodiment, since the shape of the engraved structure is equally spaced for equilateral hexagon and level,
The engraved structure of adjacent lines can compensate mutually, and the line number of the engraved structure is even number, therefore, when vertical direction
When the cabling of two equivalent widths is arranged on the ground plane, the position regardless of the cabling, the cabling with it is described
Contact area between ground plane body can be consistent, so that the impedance on the cabling can also keep one
Cause, in this manner it is possible to improve the signal transmission quality of the cabling.It is additionally, since on the ground plane body and is staggeredly equipped with
The hollow-out parts, the hollow-out parts can lift the pliability of the ground plane, avoid the ground plane from being led because pullling or bending
The fracture of cause.
Embodiment two
With reference to Fig. 4, show a kind of structure diagram of ground plane of the utility model embodiment two, can specifically wrap
Include：Ground plane body 401 and the hollow-out parts 402 being staggered on ground plane body 401；Wherein, hollow-out parts 402 include shape
The identical and horizontal engraved structure 4021 being equally spaced；The engraved structure 4021 of adjacent lines compensates mutually, engraved structure 4021
Line number is even number, and the shape of engraved structure 4021 is square.In the utility model embodiment, when two width of vertical direction
When consistent cabling A and B is arranged on the ground plane, the position regardless of cabling A and B, cabling A and B and ground plane sheet
Contact area between body 401 can be consistent, so that the impedance on cabling A and B can also be consistent, this
Sample, it is possible to improve the signal transmission quality of cabling A and B.Moreover, hollow-out parts 401 can lift the pliability of the ground plane,
The ground plane is avoided to be broken caused by pullling or bending.
In the utility model embodiment, the schematic diagram and embodiment that the engraved structures of adjacent lines can mutually compensate for are a kind of
Seemingly, this will not be repeated here.
In ground plane shown in Fig. 4, when the shape of the engraved structure is square, in order to enable the hollow out of adjacent layer
Structure can mutually compensate for, in practical applications, by the horizontal direction spacing W of square engraved structure and square engraved structure
Length of side L be arranged to equal value, the line space H of the engraved structure of adjacent lines can then be set according to actual conditions
Put.That is, in practical applications, the square engraved structure in the ground plane of the utility model embodiment is horizontal by it
Direction spacing W, length of side L are arranged to equal value, the line space H's of its horizontal direction spacing W, length of side L and adjacent lines
Occurrence can be then configured according to actual conditions, level of the utility model embodiment for the square engraved structure
Direction spacing W, length of side L and line space H are not specifically limited.
It is understood that in ground plane shown in Fig. 4, the line number of the engraved structure is 2 rows, and in practical application
In, the line number of the engraved structure can also be the evens number of lines such as 4 rows, 6 rows or 8 rows, and the utility model is for the hollow out
The specific line number of structure does not limit.
To sum up, the utility model embodiment has the following advantages：
It is adjacent since the shape of the engraved structure is equally spaced for square and level in the utility model embodiment
The capable engraved structure can compensate mutually, and the line number of the engraved structure is even number, therefore, when two of vertical direction
When the cabling of equivalent width is arranged on the ground plane, the position regardless of the cabling, the cabling and the ground connection
Contact area between layer body can be consistent, so that the impedance on the cabling can also be consistent, this
Sample, it is possible to improve the signal transmission quality of the cabling.It is additionally, since on the ground plane body and is staggeredly equipped with described engrave
Empty portion, the hollow-out parts can lift the pliability of the ground plane, avoid the ground plane from breaking caused by pullling or bending
Split.
The utility model embodiment also provides a kind of flexible PCB, can specifically include：Above-mentioned ground plane and routing layer；
Wherein, the ground plane is equipped with grounding points；The routing layer is equipped with board to board connector.The utility model embodiment
Flexible PCB not only there is good bending performance, but also when two equivalent widths of vertical direction on the routing layer
When cabling is arranged on the ground plane, the position regardless of the cabling, connecing between the cabling and the ground plane
Contacting surface product can be consistent, so that the impedance on the cabling can also be consistent.
Reference Fig. 5, shows a kind of structure diagram of flexible PCB of the utility model embodiment, as shown in Figure 5
Flexible PCB can specifically include：Ground plane 501 and routing layer 502；Wherein, ground plane 501 is equipped with grounding points
503；Routing layer 502 is equipped with board to board connector 504.The flexible PCB of the utility model embodiment not only has good
Bending performance, and when the cabling of two equivalent widths of vertical direction on routing layer 502 is arranged on ground plane 501, nothing
By the cabling position how, the contact area between the cabling and ground plane 501 can be consistent so that
Impedance on the cabling can also be consistent.
In the utility model embodiment, grounding points 503 on ground plane 501 can with other mobile terminals or its
The ground terminal connection of his device, to realize the ground connection of the flexible PCB, in order to enable the earthing effect of the flexible PCB
Preferably, grounding points 503 can be copper structure.
In practical applications, the board to board connector 504 on routing layer 502 can be used for the flexible PCB and movement
The connection of other printed circuit board (PCB)s or flexible PCB in terminal, it is to be understood that in the flexible PCB shown in Fig. 5,
The quantity of board to board connector 504 is 2, and in practical applications, the quantity of board to board connector 504 can be according to actual need
It is arranged to 3,4,6 or other quantity.
Alternatively, in order to protect the routing layer and ground plane, can also be set on the flexible PCB in double-sided surface
First screen layer and secondary shielding layer are put, and the first lid being connected respectively with the first screen layer and the secondary shielding layer
Film medium layer and the second epiphragma dielectric layer.
Reference Fig. 6, shows the structure diagram of another flexible PCB of the utility model embodiment, shown in Fig. 6
Flexible PCB in, in the double-sided surface of routing layer 601 and ground plane 602,603 and second screen of first screen layer can be set
Layer 604 is covered, and the first epiphragma dielectric layer 605 being connected respectively with first screen layer 603 and secondary shielding layer 604 and the second lid
Film medium layer 606.In the utility model embodiment, first screen layer 603 and secondary shielding layer 604 can be used for shielded signal,
Avoid the signal in transmission signal of routing layer 601 from leaking out and interference, the first epiphragma are formed to the device around the flexible PCB
605 and second epiphragma dielectric layer 606 of dielectric layer can then prevent water, impurity or etchant gas etc. from entering routing layer 601 and connecing
Stratum 602, protective effect is formed to routing layer 601 and ground plane 602.
Alternatively, in order to form metallic shield in the double-sided surface of the flexible PCB, routing layer 601 is avoided to pass
Signal is leaked out during defeated signal forms interference, first screen layer 603 and secondary shielding layer to the device around the flexible PCB
602 can be silver ion film, and certainly, in practical applications, first screen layer 603 and secondary shielding layer 604 can also select it
His metal material, the utility model embodiment are not limited for the specific material of first screen layer 603 and secondary shielding layer 604
It is fixed.
Alternatively, in order to protect routing layer 601 and ground plane 602, and cause routing layer 601 and first screen layer 603,
Reliable connection, the first epiphragma dielectric layer 605 and the second epiphragma dielectric layer are realized between ground plane 602 and secondary shielding layer 604
606 material can be adhesives, and in practical applications, the first epiphragma dielectric layer 605 and the second epiphragma dielectric layer 606 can be with
It is processed by the way of adhesives is coated with, moreover, according to actual needs, the number of plies of the adhesives can be coated with
One layer or multilayer.
To sum up, the utility model embodiment has the following advantages：
In the utility model embodiment, the flexible PCB not only has good bending performance, but also is walked described in
When the cabling of two equivalent widths of vertical direction is arranged on the ground plane on line layer, no matter the position of the cabling such as
What, the contact area between the cabling and the ground plane can be consistent, so that the impedance on the cabling
It can also be consistent, in this manner it is possible to improve the signal transmission quality of the flexible PCB.
The utility model embodiment also provides a kind of mobile terminal, and the mobile terminal includes above-mentioned flexible PCB.
In the mobile terminal, the flexible PCB can realize the densification of electronic circuit, be carried out in narrow space a large amount of
With higher reliability and mobility while wiring, and there is good bending performance and signal transmission quality.It is described
Mobile terminal can be the mobile terminals such as mobile phone, tablet computer and wearable device, and the utility model is for the movement
The particular type of terminal is not specifically limited.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or order.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements are not only wrapped
Those key elements are included, but also including other elements that are not explicitly listed, or further include as this process, method, article
Or the key element that terminal device is intrinsic.In the absence of more restrictions, wanted by what sentence "including a ..." limited
Element, it is not excluded that also there are other identical element in the process including the key element, method, article or terminal device.
Above to a kind of ground plane, flexible PCB and mobile terminal provided by the utility model, detailed Jie has been carried out
Continue, specific case used herein is set forth the principle and embodiment of the utility model, and above example is said
It is bright to be only intended to help the method and its core concept for understanding the utility model；Meanwhile for those of ordinary skill in the art,
According to the thought of the utility model, there will be changes in specific embodiments and applications, in conclusion this explanation
Book content should not be construed as the limitation to the utility model.
Claims (9)
- A kind of 1. ground plane, it is characterised in that including：Ground plane body and the hollow out being staggered on the ground plane body Portion；WhereinThe hollow-out parts include that shape is identical and the horizontal engraved structure being equally spaced；The engraved structure structure of adjacent lines is adapted,The line number of the engraved structure is even number.
- 2. ground plane according to claim 1, it is characterised in that the shape of the engraved structure is equilateral hexagon.
- 3. ground plane according to claim 1, it is characterised in that the shape of the engraved structure is square.
- 4. ground plane according to claim 1, the material of the ground plane body is copper.
- A kind of 5. flexible PCB, it is characterised in that including：Claim the 1-4 any ground plane and routing layer；WhereinThe ground plane is equipped with grounding points；The routing layer is equipped with board to board connector.
- 6. flexible PCB according to claim 5, it is characterised in that further include：It is double to be arranged on the flexible PCB The first screen layer and secondary shielding layer of side surface, and be connected respectively with the first screen layer and the secondary shielding layer First epiphragma dielectric layer and the second epiphragma dielectric layer.
- 7. flexible PCB according to claim 6, it is characterised in that the first screen layer and the secondary shielding layer For silver ion film.
- 8. flexible PCB according to claim 6, it is characterised in that the first epiphragma dielectric layer and second lid The material of film medium layer is adhesives.
- A kind of 9. mobile terminal, it is characterised in that including：Any flexible PCBs of claim 5-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720912112.3U CN207354344U (en) | 2017-07-24 | 2017-07-24 | A kind of ground plane, flexible PCB and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720912112.3U CN207354344U (en) | 2017-07-24 | 2017-07-24 | A kind of ground plane, flexible PCB and mobile terminal |
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| Publication Number | Publication Date |
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| CN207354344U true CN207354344U (en) | 2018-05-11 |
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ID=62360384
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720912112.3U Active CN207354344U (en) | 2017-07-24 | 2017-07-24 | A kind of ground plane, flexible PCB and mobile terminal |
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| CN (1) | CN207354344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108901125A (en) * | 2018-08-20 | 2018-11-27 | 索尔思光电（成都）有限公司 | A kind of printed wiring board, optical transceiver module and optical module |
-
2017
- 2017-07-24 CN CN201720912112.3U patent/CN207354344U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108901125A (en) * | 2018-08-20 | 2018-11-27 | 索尔思光电（成都）有限公司 | A kind of printed wiring board, optical transceiver module and optical module |
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