CN101448358A - Design of bending region structure of flexible printed circuit board - Google Patents
Design of bending region structure of flexible printed circuit board Download PDFInfo
- Publication number
- CN101448358A CN101448358A CNA2007101681908A CN200710168190A CN101448358A CN 101448358 A CN101448358 A CN 101448358A CN A2007101681908 A CNA2007101681908 A CN A2007101681908A CN 200710168190 A CN200710168190 A CN 200710168190A CN 101448358 A CN101448358 A CN 101448358A
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- Prior art keywords
- printed circuit
- wiring board
- bending
- flexible printed
- printed wiring
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Abstract
The invention relates to a design of a bending region structure of a flexible printed circuit board, the flexible printed circuit board comprises a substrate, at least one printed circuit and a bending region, the bending region is staggered with at least one printed circuit, at least one groove is formed at the bending region of the printed circuit, the thickness of the groove is less than or equal to the thickness of the printed circuit, and the groove can not cut off the printed circuit; the design of the groove can effectively control the stress position at the bending region of the flexible printed circuit board, thereby achieving the purpose of precise bending angle of the flexible printed circuit board.
Description
Technical field
The present invention designs relevant for a kind of flexible printed circuit board structure, refers to that especially a kind of the district in bending in flexible printed wiring board is provided with groove, makes the structural design that forms the folding s tress line.
Background technology
The key property of flexible printed wiring board (FPC) and advantage are to be easy to bending and pliability, so in the project organization that need destroy or force to yield when often being applied to assemble of flexible printed wiring board, so whether the position of its bending part accurately very important when bending.
See also Figure 1 and Figure 2, in known techniques, generally can need the bending place to add a white paint line 11, look crooked place so that operator is distinguished at flexible printed wiring board 10.But this known bending method, because the tolerance that white paint line 11 printing tolerances and the manual bending of operator are caused often makes that angle was accurate fully when flexible printed wiring board 10 can't reach bending.
In addition, therefore part dealer hollows out flexible printed wiring board bending district part for improving the unmanageable disappearance of above-mentioned bending accuracy.But these class methods must be destroyed flexible printed wiring board, make flexible printed wiring board intensity reduce, and very the person causes the flexible printed wiring board fracture.
Summary of the invention
Because the disappearance of known techniques, the objective of the invention is to propose the design of a kind of flexible printed wiring board bending plot structure, the printed circuit of flexible printed wiring board is done a special line of tension design, can be when flexible printed wiring board bends, the position that proof stress produces, and reach the accurate effect of bending angle.
For achieving the above object, the present invention proposes the design of a kind of flexible printed wiring board bending plot structure, this flexible printed wiring board has an at least one printed circuit and a bending district, this bending district is staggered with this at least one printed circuit, and the bending district in this printed circuit forms at least one groove, and this groove does not cut off this printed circuit; By the design of these grooves, stress position effectively can be controlled in the bending district of flexible printed wiring board.
Further understand and approval for having for structure purpose of the present invention and effect, cooperate diagram to describe in detail now as after.
Description of drawings
Fig. 1 is the structural representation of known flexible printed wiring board.
Fig. 2 is the structural representation after the known flexible printed wiring board bending.
Fig. 3 is the structural representation of one embodiment of the invention.
Fig. 4 is the local structure for amplifying schematic diagram after the present invention bending.
Fig. 5 is the structural representation after Fig. 3 embodiment bending.
Fig. 6 to Figure 11 is the structural representation of different embodiments of the invention.
The primary clustering symbol description
One, prior art:
The 10-flexible printed wiring board
11-white paint line
Two, the present invention:
2,12,22,32,42,52,62-flexible printed wiring board
20,120,220,320,420,520,620-substrate
21,121,221,321,421,521,621,22,122,222,322,422,522,622-printed circuit
The wide zone of 1211-
23,123,223,323,423,523,623-bends the district
24,124,224,324,424,524a, 524b, 624a, 624b-groove
After the bending of g-flexible printed wiring board, the gap on its relative two sides
The length of L-groove
The thickness of t-flexible printed wiring board
The width of W-groove
The width of W1 printed circuit
θ-bending angle
π-circumference ratio
Embodiment
For reaching employed technological means of purpose and effect, and following graphic cited embodiment only is an aid illustration hereinafter with reference to the graphic the present invention of description who encloses, and in order to understanding, but that technological means of the present invention is not limited to is cited graphic.
See also shown in Figure 3, one specific embodiment of flexible printed wiring board bending plot structure provided by the invention design, this flexible printed wiring board 2 has a substrate 20, at least one printed circuit and a bending district 23, be provided with two as this printed circuit 21,22 of drawing, this bending district 23 is staggered with this printed circuit 21,22, usually, this bending district 23 is 45 degree bending angle θ with this substrate 20; By processing modes such as etchings, form a groove 24 in 23 positions, bending district of this printed circuit 21.
Because these groove 24 complete these printed circuits 21 of etching, so the degree of depth of groove 24 must be less than or equal to the thickness of this printed circuit 21; Length L as for this groove 24 is not limit, get final product with this printed circuit 21 of incomplete cut-off, as shown in this embodiment, this width W 1 that is provided with this printed circuit 21 of groove 24 is strengthened, so, can make the length L of this groove 24 can contain most of zone of this flexible printed wiring board 2, but and this printed circuit 21 state of being communicated with of holding circuit still; Moreover, see also shown in Figure 4ly, the width W of this groove 24 designs according to following formula:
W≧(g/2+t)*π；
Wherein, W is the width of groove 24; After g is flexible printed wiring board 2 bendings, the gap on its relative two sides; T is the thickness of flexible printed wiring board 2; π is a circumference ratio.
When width W during more near (g/2+t) * π, bending angle will be accurate more.
By the above-mentioned degree of depth, length L, the design of width W equidimension for this groove 24, as shown in Figure 5, stress position effectively can be controlled in the bending district 23 of flexible printed wiring board 2, reach the accurate purpose of flexible printed wiring board 2 bending angles.
See also embodiment illustrated in fig. 6, it is based on Fig. 3 embodiment, this flexible printed wiring board 12 has a substrate 120, two printed circuits 121,122 and a bending district 123, this printed circuit 121 has wide regional 1211 of a width W 1, this wide regional 1211 contains this bending district 123, can be in order to groove 124 to be set, the characteristics of present embodiment are that this wide regional 1211 two ends taper in width away from bending district 123 becomes suitable with the width of another printed circuit 122; This convergent position 1212 should have certain suitably distance with this bending district 123, to avoid 1212 another line of tensions of formation in this convergent position.
See also the structural representation of Fig. 7 to other different embodiment of the present invention shown in Figure 11.
As shown in Figure 7, this flexible printed wiring board 22 has printed circuit 221, the one narrower printed circuit 222 and a bending of a substrate 220, a broad and distinguishes 223,223 positions, bending district in this printed circuit 221 are provided with a groove 224, and the characteristics of present embodiment are that this groove 224 is arranged at the edge of this printed circuit 221 near this printed circuit 222.
Again as shown in Figure 8, this flexible printed wiring board 32 has printed circuit 321, the one narrower printed circuit 322 and a bending of a substrate 320, a broad and distinguishes 323,323 positions, bending district in this printed circuit 321 are provided with a groove 324, the characteristics of present embodiment are that this groove 324 is arranged at this printed circuit 321 about central parts, and do not run through the both sides of the edge of this printed circuit 321.
Again as shown in Figure 9, this flexible printed wiring board 42 has printed circuit 421, the one narrower printed circuit 422 and a bending of a substrate 420, a broad and distinguishes 423, the characteristics of present embodiment are that 423 positions, bending district of this printed circuit 421 are provided with the groove 424 of plural number, it is circular that the shape of this groove 424 is not limited to diagram, can be the random geometry combination.
Again as shown in figure 10, this flexible printed wiring board 52 has an identical printed circuit 521,522 of a substrate 520, two width and a bending district 523, the characteristics of present embodiment are 523 positions, bending district of this printed circuit 521,522, be respectively equipped with a groove 524a, 524b, and this groove 524a, 524b be arranged at respectively this printed circuit 521,522 mutually away from the edge.
Again as shown in figure 11, this flexible printed wiring board 62 has an identical printed circuit 621,622 of a substrate 620, two width and a bending district 623, present embodiment is based on Figure 10 embodiment, special in 623 positions, bending district of this printed circuit 621,622, be respectively equipped with a groove 624a, 624b, and the characteristics of present embodiment are that this groove 624a, 624b are arranged at the edge of these printed circuit 621,622 vicinities.
In sum, flexible printed wiring board bending plot structure provided by the present invention design, its characteristics are that the bending district of printed circuit forms the groove line of tension, stress position effectively can be controlled in the bending district of flexible printed wiring board, reach the accurate purpose of flexible printed wiring board bending angle; Mandatory declaration be, the shape of this groove, quantity and position are not limited to the foregoing description, its design focal point is the bending district thickness of printed circuit is lowered, or etching and do not cut off printed circuit and get final product fully.
The above only is embodiments of the invention, when can not with the scope implemented of qualification the present invention.Promptly the equalization of being done according to the present patent application claim generally changes and modifies, and all should still belong in the scope that patent of the present invention contains.
Claims (10)
1, a kind of flexible printed wiring board bending plot structure design is characterized in that, comprises:
One flexible printed wiring board, this flexible printed wiring board have an at least one printed circuit and a bending district, and should bending distinguish with this at least one printed circuit staggered;
At least one groove, this groove is arranged with in this printed circuit, and this groove is positioned at this bending district.
2, flexible printed wiring board bending plot structure as claimed in claim 1 design, it is characterized in that: the degree of depth of this groove is less than or equal to the thickness of this printed circuit, forms at least one breach for this printed circuit.
3, flexible printed wiring board bending plot structure as claimed in claim 2 design, it is characterized in that: the breach of this printed circuit does not cut off this printed circuit.
4, flexible printed wiring board as claimed in claim 3 bending plot structure design is characterized in that: be provided with the breach of plural number, and total length that should the plural number breach does not cut off this printed circuit.
5, flexible printed wiring board bending plot structure as claimed in claim 1 design is characterized in that: the following formula of the design considerations of this groove:
The * π of W ≧ (g/2+t); Wherein,
W is a recess width;
After g is the flexible printed wiring board bending, the gap on its relative two sides;
T is the thickness of flexible printed wiring board;
π is a circumference ratio.
6, flexible printed wiring board as claimed in claim 1 bending plot structure design, it is characterized in that: this flexible printed wiring board has two printed circuits, and one of them printed circuit has a wide zone, and this wide zone is contained this bending district and groove is set.
7, flexible printed wiring board bending plot structure as claimed in claim 6 design, it is characterized in that: this groove is arranged at the edge of the printed circuit of this wider width.
8, flexible printed wiring board bending plot structure as claimed in claim 6 design, it is characterized in that: this groove is arranged at about central part of the printed circuit of this wider width, and does not run through the both sides of the edge of this printed circuit.
9, flexible printed wiring board bending plot structure as claimed in claim 1 design is characterized in that: the shape of this groove can be circle or random geometry combination.
10, flexible printed wiring board bending plot structure as claimed in claim 1 design, it is characterized in that: the width of this two printed circuit is identical approximately, and this two printed circuit is equipped with at least one groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101681908A CN101448358B (en) | 2007-11-28 | 2007-11-28 | Bending region structure of flexible printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101681908A CN101448358B (en) | 2007-11-28 | 2007-11-28 | Bending region structure of flexible printed circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101448358A true CN101448358A (en) | 2009-06-03 |
| CN101448358B CN101448358B (en) | 2011-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101681908A Expired - Fee Related CN101448358B (en) | 2007-11-28 | 2007-11-28 | Bending region structure of flexible printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101448358B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104378911A (en) * | 2014-11-26 | 2015-02-25 | 河源中光电通讯技术有限公司 | Improved flexible circuit board of mobile phone display screen |
| CN105578721A (en) * | 2015-12-29 | 2016-05-11 | 广东欧珀移动通信有限公司 | Flexible circuit board and mobile terminal |
| CN107432080A (en) * | 2015-03-16 | 2017-12-01 | 日本梅克特隆株式会社 | Flexibility printed circuit board |
| CN107919061A (en) * | 2016-10-05 | 2018-04-17 | 三星显示有限公司 | Display device |
-
2007
- 2007-11-28 CN CN2007101681908A patent/CN101448358B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104378911A (en) * | 2014-11-26 | 2015-02-25 | 河源中光电通讯技术有限公司 | Improved flexible circuit board of mobile phone display screen |
| CN107432080A (en) * | 2015-03-16 | 2017-12-01 | 日本梅克特隆株式会社 | Flexibility printed circuit board |
| CN107432080B (en) * | 2015-03-16 | 2018-10-02 | 日本梅克特隆株式会社 | Flexibility printed circuit board |
| CN105578721A (en) * | 2015-12-29 | 2016-05-11 | 广东欧珀移动通信有限公司 | Flexible circuit board and mobile terminal |
| CN107919061A (en) * | 2016-10-05 | 2018-04-17 | 三星显示有限公司 | Display device |
| CN107919061B (en) * | 2016-10-05 | 2021-11-09 | 三星显示有限公司 | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101448358B (en) | 2011-07-20 |
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