CN103491705B - A kind of flexible circuit board - Google Patents
A kind of flexible circuit board Download PDFInfo
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- CN103491705B CN103491705B CN201310463982.3A CN201310463982A CN103491705B CN 103491705 B CN103491705 B CN 103491705B CN 201310463982 A CN201310463982 A CN 201310463982A CN 103491705 B CN103491705 B CN 103491705B
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- linkage section
- circuit board
- flexible circuit
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Abstract
The present invention relates to technical field of flat panel display, more particularly to a kind of flexible circuit board, which is used to connect the first functional unit, which at least includes one first linkage section that is adjacent and being electrical connected and one second linkage section, first linkage section is for being connected with first functional unit, and the span on second linkage section adjacent to one end of first linkage section in a first direction is less than span of first linkage section adjacent to one end of second linkage section in said first direction, the ductility of second linkage section is less than the ductility of first linkage section.
Description
Technical field
The present invention relates to technical field of flat panel display, more particularly to a kind of flexible circuit board.
Background technology
Flexible printed circuit board (Flexible Printed Circuit Board) is also called flexible electric circuit board, is a kind of
With mylar or polyimides as base material, by be etched on Copper Foil formed circuit and made by have height reliability, absolutely
The printed circuit of good flexibility.Which has the advantages that many rigid printed circuit boards do not possess.For example it can be with free bend, volume
Around, fold, can require arbitrarily to arrange according to space layout, and arbitrarily mobile and flexible in three dimensions, so as to reach components and parts
Assembling and the integration of wire connection.The volume of electronic product can be substantially reduced using FPC, be suitable for electronic product to high density,
The needs that miniaturization, highly reliable direction are developed.Therefore, FPC space flight, military affairs, mobile communication, laptop computer, computer peripheral equipment,
It is widely used on the fields such as PDA, digital camera or electronic product.
FPC have one side, two-sided and multi-layer sheet point.The base material for being adopted is based on polyimide copper clad lamination.This kind of material
Thermostability is high, good stability of the dimension, is formed most by compacting with the coverlay for having mechanical protection and good electrical insulating properties concurrently
Finished product.The top layer of two-sided, multilayer printed wiring board and inner conductor realize the electrical connection of ectonexine circuit by metallization.
The material for constituting FPC has insulating substrate, adhesive, metal conductor layer (Copper Foil), coating and supporting material etc..
However, in the back segment packaging process of electronic product (such as liquid crystal display module), as shown in figure 1, FPC 10
One end is electrically connected with display device 20 by two-sided conducting resinl, and the other end is connected with mainboard 30 (or chip) by two-sided conducting resinl
Connect.In subsequent treatment process, inevitably touch FPC 10, make FPC 10 occur bending or distort, and then make with
Peeling off easily occur in 10 edges of FPC that display device 20 or mainboard 30 are electrically connected with, or even cause local shedding, affect electronics
The performance of product.
The content of the invention
In view of this, the present invention provides a kind of flexible circuit board for being conducive to improving electronic product performance.
The flexible circuit board that the present invention is provided, for connecting the first functional unit, which at least includes adjacent and electric
Property be connected one first linkage section and one second linkage section, first linkage section for being connected with first functional unit,
And the span on second linkage section adjacent to one end of first linkage section in a first direction connects less than described first
One end of neighbouring second linkage section of section span in said first direction, the ductility of second linkage section are less than institute
State the ductility of the first linkage section.
The present invention provide the flexible circuit board in, the flexible circuit board also include the 3rd linkage section, the described 3rd
Linkage section is electrical connected with first linkage section by second linkage section, the 3rd linkage section for one second work(
Energy unit connection, and the span on second linkage section adjacent to one end of the 3rd linkage section in a first direction is less than institute
State the 3rd linkage section span adjacent to one end of second linkage section in said first direction, second linkage section prolongs
Ductility of the malleability less than the 3rd linkage section.
In the flexible circuit board that the present invention is provided, first linkage section, the second linkage section and the 3rd linkage section are
Integrated formed structure, second linkage section arbitrary span in a first direction are respectively less than first linkage section and the
Span of three linkage sections adjacent to one end of second linkage section in said first direction.
Second linkage section has opposite first side and second side in a second direction, the first side and the
The distance between two lines cut by the plane determined through the first direction and second direction on two side faces are along first party
To being first gradually reduced, then gradually increase, the minimum span that second linkage section is gone up in the first direction is the described second connection
The 1/2 of the maximum span that section is gone up in the first direction.
In the flexible circuit board that the present invention is provided, second linkage section also has opposite first surface and second
Surface, the first surface are cut perpendicular to first direction and second direction and through plane determined by the second direction
Graphics area be first gradually reduced, then gradually increase.
In the flexible circuit board that the present invention is provided, the material for constituting the flexible base board at least includes insulating substrate
Layer, metal level and coating, the metal level are located between the insulated base material layer and the coating, the first function list
It is first to be electrically connected with the flexible circuit board by the metal level with second functional unit.
Another kind of flexible circuit board that the present invention is provided, for connecting the first functional unit, its at least including adjacent and
One first linkage section being electrical connected and one second linkage section, first linkage section for first functional unit connect
Connect, the ductility of second linkage section is respectively smaller than the ductility of first linkage section and the 3rd linkage section.
In another kind of flexible circuit board that the present invention is provided, the flexible circuit board also including the 3rd linkage section, described the
Three linkage sections are electrical connected with first linkage section by second linkage section, and the 3rd linkage section is for one second
Functional unit connects, and neighbouring less than first linkage section adjacent to one end of first linkage section on second linkage section
Span of the one end of second linkage section on third direction, the one of neighbouring 3rd linkage section on second linkage section
Span of the end on third direction is less than the 3rd linkage section adjacent to one end of second linkage section in the third direction
On span, first linkage section, the second linkage section and the 3rd linkage section be formed in one structure, constitutes the flexible base board
Material at least include insulated base material layer, metal level and coating, the metal level is located at the insulated base material layer and described covers
Between cap rock, first functional unit is electric with the flexible circuit board by the metal level with second functional unit
Connection.
In another kind of flexible circuit board that the present invention is provided, it is also covered each by first linkage section and the 3rd linkage section
There is hard functional layer, the thickness of the hard functional layer is more than or equal to the thickness at arbitrary place on the second linkage section.
In another kind of flexible circuit board that the present invention is provided, first linkage section gradually subtracts along the thickness of fourth direction
Little, the thickness of second linkage section is minimum thickness of first linkage section along fourth direction, second linkage section
Thickness is uniformly arranged, and first linkage section is length of second linkage section along fourth direction along the length of fourth direction
1/4。
In the flexible circuit board that the present invention is provided, as in a first direction, the second linkage section is with relative to the first company
Section and the less span of the second linkage section are connect, can be sustained because of the stress produced by bending, it is thereby possible to reduce described first
Stress suffered by the junction of functional unit and first linkage section, and then the first functional unit can be prevented from described soft
Property wiring board on peel off or local shedding, improve the performance of electronic product.
Description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the connection diagram of flexible circuit board of the prior art；
The front view of the flexible circuit board connected mode of the first embodiment that Fig. 2 is provided for the present invention；
Fig. 3 is the front view of the flexible circuit board shown in Fig. 2；
Fig. 4 is sectional view of the flexible circuit board shown in Fig. 3 along A-A ' directions；
The front view of the flexible circuit board of second embodiment that Fig. 5 is provided for the present invention；
Fig. 6 is the axonometric chart of the flexible circuit board shown in Fig. 5；
The axonometric chart of the flexible circuit board of the third embodiment that Fig. 7 is provided for the present invention；
Fig. 8 is sectional view of the flexible circuit board shown in Fig. 7 along B-B ' directions.
Specific embodiment
The flexible circuit board for providing to illustrate the invention, is explained in detail below in conjunction with Figure of description and explanatory note
State.
The flexible circuit board that the present invention is provided is used to connect the first functional unit, and which at least includes adjacent and is electrical connected
One first linkage section and one second linkage section, first linkage section is for being connected with first functional unit and described
On second linkage section, one end of neighbouring first linkage section span in a first direction is neighbouring less than first linkage section
One end of second linkage section span in said first direction.The flexible circuit board also includes the 3rd linkage section, uses
In being connected with one second functional unit, and on second linkage section neighbouring 3rd linkage section one end in a first direction
Span be less than span of the 3rd linkage section adjacent to one end of second linkage section in said first direction, preferably
, second linkage section arbitrary span in a first direction is respectively less than first linkage section and the 3rd linkage section is adjacent
One end of nearly second linkage section span in said first direction, the first direction is perpendicular to the first function list
First closure with the flexible circuit board.
As shown in Figures 2 and 3, the schematic diagram of the flexible circuit board 100 of the first embodiment for providing for the present invention, institute
State flexible circuit board 100 for connect the first functional unit 200 and the second functional unit 300, the flexible circuit board 100 includes
First linkage section 101, the second linkage section 102 and the 3rd linkage section 103, first linkage section, 101 second linkage section 102 are adjacent
Connect and be electrical connected, the 3rd linkage section 103 is by second linkage section 102 and first linkage section, 101 electrical phase
Even, first linkage section 101 is for being connected with first functional unit 200, the 3rd linkage section 103 for it is described
Second functional unit 300 connects, and the flexible circuit board 100 is bent by second linkage section 102.
In present embodiment, as shown in figure 3, first linkage section 101, the second linkage section 102 and the 3rd linkage section 103
Be formed in one structure, and first linkage section 101, the second linkage section 102 and the 3rd linkage section 103 are rectangle, and described
Two linkage sections 102 span W1 in a first direction on 11 is respectively less than first linkage section 101 and the 3rd linkage section 103 exists
Span W2, W3 on first direction 11, second linkage section is by perpendicular to determined by the first direction and second direction
The cut graphics area of plane keeps constant.
When flexible circuit board 100 is bent, due in a first direction, the second linkage section 102 is with relative to first
103 less span of linkage section 101 and the 3rd linkage section, can sustain because of the stress produced by bending, it is thereby possible to reduce
First functional unit 200 and the second functional unit 300 are in the company with first linkage section 101 and the 3rd linkage section 103
The suffered stress in place is connect, and then the first functional unit 200 and the second functional unit 300 can be prevented from the flexible circuit board
Peel off or local shedding on 100, improve the performance of electronic product.
As shown in figure 4, which is sectional view of the flexible circuit board shown in Fig. 3 along A-A ' directions.It is soft in present embodiment
Property wiring board 100 at least include dielectric substrate layer 112, metal level 111 and coating 110, the metal level 111 be located at it is described absolutely
Between edge substrate layer 112 and coating 110, first functional unit 200 and the second functional unit 300 pass through the gold respectively
Category layer 111 is electrically connected with the flexible circuit board 100.
In other embodiments, the flexible circuit board can also be without including the 3rd linkage section, and the flexible circuitry
Plate can be having other shapes according to practical situation.
As shown in Figure 5 and Figure 6, which is the front view of the flexible circuit board 200 of second embodiment of the present invention and stands
Body figure, the flexible circuit board 200 include the first linkage section 201, the second linkage section 202 and the 3rd linkage section for adjoining each other
203, the second linkage section 202 of the flexible circuit board 200 12 has opposite first side 202a and second in a second direction
Side 202b, what is determined through the first direction and second direction in first side 202a and second side 202b are flat
The distance between cut two lines in face along first linkage section to the second linkage section (i.e. first direction) direction first gradually
Reduce, then gradually increase.Second linkage section 202 also includes first surface 202c and the second surface being disposed opposite to each other
202d, the first surface 202c and second surface 202d are cut perpendicular to plane determined by first direction and second direction
The length of line segment be first gradually reduced along first linkage section to the second linkage section (i.e. first direction) direction, then gradually
Increase；And second linkage section 202 by through the second direction and perpendicular to the first direction and second direction institute really
The cut graphics area of fixed plane first gradually subtracts along first linkage section to the second linkage section (i.e. first direction) direction
It is little, then gradually increase, or the graphics area is along first linkage section to the second linkage section (i.e. first direction) direction
Keep constant.In the present embodiment, first side 202a and second side 202b are respectively towards second linkage section
202 13 indent of centrage, the centrage 13 extend along second direction 12, and second linkage section 102 is in the first direction
Minimum span W5 on 11 is the 1/2 of maximum span W6 of second linkage section 102 in the first direction on 11.
Arbitrary vertical interval between the first surface 202c and second surface 202d can keep constant, described vertical
Spacing first can also be gradually reduced in a second direction, after gradually increase.
In present embodiment, connection of the second direction 12 along first functional unit and the flexible circuit board
Direction, and vertical with the first direction 11, in other embodiments, it is also possible to according to practical situation arrange first direction and
Second direction.
Preferably, the thickness of first linkage section 201 is along first linkage section, 201 to the second linkage section 202 (i.e.
One direction) it is gradually reduced on direction, the thickness of the 3rd linkage section 203 is along 203 to the second linkage section of the 3rd linkage section
It is gradually reduced on 202 (i.e. first direction) direction, the thickness direction is along perpendicular to the first direction and second direction institute
It is determined that plane.That is, first linkage section 201 is cut by the plane of the first surface 202c perpendicular to the second linkage section 202
Graphics area be gradually reduced along 201 to the second linkage section 202 (i.e. first direction) direction of the first linkage section, described first most
Little graphics area is decreased to S1, and the 3rd linkage section 203 is by the plane of the first surface 202c perpendicular to the second linkage section 202
Cut graphics area is gradually reduced along 203 to the second linkage section 202 (i.e. first direction) direction of the 3rd linkage section, and described second
Minimum graphics area is decreased to S2, and second linkage section 202 is by the flat of the first surface 202c perpendicular to the second linkage section 202
The cut graphics area in face is always maintained at constant in the first direction, and which is the 3rd graphics area S3, the described first minimum figure
The second minimum graphics area S2 of area S1 are equal, and are more than or equal to the 3rd graphics area S3.
As shown in Figure 7 and Figure 8, which is respectively the schematic diagram of the flexible circuit board of the third embodiment that the present invention is provided
And the flexible circuit board, along the sectional view in B-B ' directions, the flexible circuit board 300 includes what is adjoined each other and be electrical connected
First linkage section 301, the second linkage section 302 and the 3rd linkage section 303, the ductility of second linkage section 302 are respectively smaller than
The ductility of first linkage section 301 and the 3rd linkage section 303.
In present embodiment, first linkage section 301, the second linkage section 302 and the 3rd linkage section 303 are formed in one
Structure, on second linkage section 302, one end of neighbouring first linkage section 301 is neighbouring less than first linkage section 301
Span of the one end of second linkage section 302 on the third direction 14, neighbouring described the on second linkage section 302
Span of the one end of three linkage sections 303 on third direction 14 is less than the 3rd linkage section 303 adjacent to second linkage section
Span of 302 one end on the third direction 14.
In present embodiment, the material for constituting the flexible base board 300 at least includes insulated base material layer, metal level and covering
Layer, the metal level are located between the insulated base material layer and the coating, and the first functional unit and the second functional unit are logical
Cross the metal level (not shown) is electrically connected with the flexible circuit board.As shown in Figure 7 and Figure 8, first connection
Hard functional layer 304 is also covered each by section 301 and the 3rd linkage section 303, the hard functional layer 304 is located at flexible circuitry
The same side of plate 300, and the thickness of the hard functional layer 304 is equal to the thickness of second linkage section 302, the thickness side
To perpendicular to the B-B ' directions and plane determined by the third direction 14.
In another embodiment, first linkage section 301 is gradually reduced along the thickness of fourth direction, and described second
The thickness of linkage section 302 is minimum thickness of first linkage section 301 along fourth direction, the thickness of second linkage section 302
Degree is uniformly arranged, and first linkage section 301 is length of second linkage section 302 along fourth direction along the length of fourth direction
1/4 (not shown) of degree, the third direction 14 and fourth direction are mutually perpendicular to.
In other embodiments, the hard functional layer can also be located at the opposite both sides of flexible circuit board respectively, and
The thickness of the hard functional layer can be more than or less than the thickness of the second linkage section, and to the first linkage section, the second connection
Section and span of the 3rd linkage section on third direction can not also be limited；In other embodiments, can be with second
Flexibility function layer is set on linkage section, and the thickness of the flexibility function layer is less than the thickness of the hard functional layer.
By hard functional layer is arranged on the first linkage section and the 3rd linkage section in present embodiment so that the second connection
The ductility of section is less than the ductility of the first linkage section and the 3rd linkage section, can reduce first functional unit and the second work(
Can unit respectively with the stress suffered by the junction of first linkage section and the 3rd linkage section, and then the first work(can be prevented
Energy unit and the second functional unit are peeled off or local shedding from the flexible circuit board, improve the performance of electronic product.
The better embodiment of the flexible circuit board for providing for the present invention above, can not be interpreted as protecting right of the present invention
The restriction of scope is protected, those skilled in the art should know, without departing from the inventive concept of the premise, can also do various changing
Enter or replace, all of grade is improved or replaced all should be in the scope of the present invention, i.e., right of the invention is protected
Shield scope should be defined by claim.
Claims (10)
1. a kind of flexible circuit board, for connecting one first functional unit, its at least include it is adjacent and be electrical connected one the
One linkage section and one second linkage section, first linkage section is for being connected with first functional unit, and described second connects
Span of the one end of neighbouring first linkage section in section on a first direction is connect less than first linkage section adjacent to described
One end of second linkage section span in said first direction, the ductility of second linkage section is less than the described first connection
The ductility of section.
2. flexible circuit board as claimed in claim 1, it is characterised in that：The flexible circuit board also includes the 3rd linkage section,
3rd linkage section is electrical connected with first linkage section by second linkage section, the 3rd linkage section for
One second functional unit connects, and on second linkage section neighbouring 3rd linkage section one end in a first direction across
Less than span of the 3rd linkage section adjacent to one end of second linkage section in said first direction, described second connects degree
Connect the ductility of the ductility less than the 3rd linkage section of section.
3. flexible circuit board as claimed in claim 2, it is characterised in that：First linkage section, the second linkage section and the 3rd
Linkage section is formed in one structure, and second linkage section arbitrary span in a first direction respectively connects less than described first
Connect the span of section and the 3rd linkage section adjacent to one end of second linkage section in said first direction.
4. flexible circuit board as claimed in claim 3, it is characterised in that：Second linkage section has opposite in a second direction
First side and second side, determined through the first direction and second direction in the first side and second side
The distance between cut two lines of plane be first gradually reduced in the first direction, then gradually increase, second linkage section
The minimum span gone up in the first direction is the 1/2 of the maximum span that second linkage section is gone up in the first direction.
5. flexible circuit board as claimed in claim 3, it is characterised in that：Second linkage section also has the first opposite table
Face and second surface, the first surface is by perpendicular to first direction and second direction and through determined by the second direction
The cut graphics area of plane is first gradually reduced, and then gradually increases.
6. flexible circuit board as claimed in claim 2, it is characterised in that：The material for constituting the flexible circuit board at least includes
Insulated base material layer, metal level and coating, the metal level are located between the insulated base material layer and the coating, and described the
One functional unit is electrically connected with the flexible circuit board by the metal level with second functional unit.
7. a kind of flexible circuit board, for connecting the first functional unit, its at least include it is adjacent and be electrical connected one first
Linkage section and one second linkage section, first linkage section for being connected with first functional unit, second linkage section
Ductility be respectively smaller than the ductility of first linkage section and the 3rd linkage section.
8. flexible circuit board as claimed in claim 7, it is characterised in that：The flexible circuit board also includes the 3rd linkage section,
3rd linkage section is electrical connected with first linkage section by second linkage section, the 3rd linkage section for
One second functional unit connects, and one end of neighbouring first linkage section connects less than described first on second linkage section
Span of the one end of neighbouring second linkage section of section on third direction, neighbouring described 3rd connection on second linkage section
The span of the one end on third direction of section is less than the 3rd linkage section adjacent to one end of second linkage section described the
Tripartite's span upwards, first linkage section, the second linkage section and the 3rd linkage section are formed in one structure, constitute described soft
Property substrate material at least include insulated base material layer, metal level and coating, the metal level be located at the insulated base material layer and
Between the coating, first functional unit passes through the metal level and the flexible circuitry with second functional unit
Plate is electrically connected.
9. flexible circuit board as claimed in claim 8, it is characterised in that：Also divide on first linkage section and the 3rd linkage section
Hard functional layer is not coated with, the thickness of the hard functional layer is more than or equal to the thickness at arbitrary place on the second linkage section.
10. flexible circuit board as claimed in claim 7, it is characterised in that：Thickness of first linkage section along fourth direction
It is gradually reduced, the thickness of second linkage section is minimum thickness of first linkage section along fourth direction, described second connects
The thickness for connecing section is uniformly arranged, and first linkage section is second linkage section along fourth direction along the length of fourth direction
The 1/4 of length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310463982.3A CN103491705B (en) | 2013-09-27 | 2013-09-27 | A kind of flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310463982.3A CN103491705B (en) | 2013-09-27 | 2013-09-27 | A kind of flexible circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103491705A CN103491705A (en) | 2014-01-01 |
| CN103491705B true CN103491705B (en) | 2017-04-05 |
Family
ID=49831561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310463982.3A Active CN103491705B (en) | 2013-09-27 | 2013-09-27 | A kind of flexible circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103491705B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6433284B1 (en) * | 2000-07-25 | 2002-08-13 | Advanced Flexible Circuits Co., Ltd. | Partially cut multi-planar flexible printed circuit |
| CN1507312A (en) * | 2002-12-13 | 2004-06-23 | 日本胜利株式会社 | Flexible printed circuit board and producing method thereof |
| EP1589794A1 (en) * | 2004-04-21 | 2005-10-26 | Samsung Electronics Co., Ltd. | Flexible printed circuit board |
| CN203645907U (en) * | 2013-09-27 | 2014-06-11 | 深圳莱宝高科技股份有限公司 | Flexible printed circuit board |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8358372B2 (en) * | 2008-06-23 | 2013-01-22 | Eastman Kodak Company | Digital camera curved flat cable |
-
2013
- 2013-09-27 CN CN201310463982.3A patent/CN103491705B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6433284B1 (en) * | 2000-07-25 | 2002-08-13 | Advanced Flexible Circuits Co., Ltd. | Partially cut multi-planar flexible printed circuit |
| CN1507312A (en) * | 2002-12-13 | 2004-06-23 | 日本胜利株式会社 | Flexible printed circuit board and producing method thereof |
| EP1589794A1 (en) * | 2004-04-21 | 2005-10-26 | Samsung Electronics Co., Ltd. | Flexible printed circuit board |
| CN203645907U (en) * | 2013-09-27 | 2014-06-11 | 深圳莱宝高科技股份有限公司 | Flexible printed circuit board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103491705A (en) | 2014-01-01 |
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