CN202979456U - Bendable circuit board - Google Patents
Bendable circuit board Download PDFInfo
- Publication number
- CN202979456U CN202979456U CN 201220622147 CN201220622147U CN202979456U CN 202979456 U CN202979456 U CN 202979456U CN 201220622147 CN201220622147 CN 201220622147 CN 201220622147 U CN201220622147 U CN 201220622147U CN 202979456 U CN202979456 U CN 202979456U
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- CN
- China
- Prior art keywords
- wiring board
- prepreg
- groove
- flexible
- circuit board
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A flexible circuit board is mainly formed by stacking together a core board and a plurality of prepregs, and is characterized in that a groove for bending is formed in a bending area on the surface of at least one side of the circuit board, the length direction of the groove is perpendicular to the bending direction of the circuit board, the groove penetrates through the circuit board in the width direction, at least a third prepreg is reserved between the groove bottom and the surface of the other side of the circuit board, and flexible ink is arranged corresponding to the bending area of the circuit board on the surface of the other side of the circuit board. The flexible circuit board is not only advantaged by low cost which belongs to an advantage of a rigid board, but also simultaneously advantaged by small size, bendability, and capability of three-dimensional assembling which belong to advantages of a flexible board and a rigid-flexible combined board.
Description
Technical field
The utility model relates to wiring board, relates in particular to a kind of flexible wiring board.
Background technology
Wiring board makes circuit miniaturization, visualize, for the batch production of permanent circuit with optimize the electrical appliance layout and play an important role.Wiring board commonly used is divided into hardboard, soft board and Rigid Flex at present, wherein, soft board and Rigid Flex are mainly used in the connecting portion of electronic product, such as flex cable, liquid crystal module etc., soft board and Rigid Flex have the advantages such as volume is little, lightweight, bent deflection, stereoscopic three-dimensional assembling compared to hardboard, but soft board and Rigid Flex have also that disposable initial cost is high, change and repair the shortcomings such as restriction, misoperation more difficult, that size is subjected to production equipment be fragile.Yet in many application, soft board and Rigid Flex only need that bending is used for several times completing assembling, does over again, maintenance etc., do not need often to bend deflection, so be not to use high soft board or the Rigid Flex of price in these are used.So, how to use cheap hardboard just to become research topic of the present utility model to realize the flexible function of soft board and Rigid Flex.
Summary of the invention
The purpose of this utility model is to provide a kind of cheap flexible wiring board.
For achieving the above object, the technical solution adopted in the utility model is: a kind of flexible wiring board, this wiring board is mainly by central layer with some prepregs are stacked consists of, at least one side surface of described wiring board offers groove for bending at bending area, the length direction of this groove is perpendicular to the bending direction of wiring board, and groove runs through described wiring board on Width, at least remain with one the 3rd prepreg between the bottom land of groove and wiring board opposite side surface, the bending area of the corresponding described wiring board in opposite side surface is provided with flexible ink.
Related content in technique scheme is explained as follows:
1, in such scheme, described " Width " is perpendicular to described " bending direction ";
Described " prepreg " claims again " PP sheet ", it is one of main material during multi-layer sheet is produced, mainly formed by resin and reinforcing material, reinforcing material is divided into again the several types such as glass-fiber-fabric, paper substrate, composite material, the prepreg that multi-layer sheet uses adopts glass fabric to do reinforcing material mostly, the upper resin adhesive liquid of treated glass fabric dipping, then the sheeting of making through the heat treatment preliminary drying is called prepreg, it adds in heating, and depresses can be softening, can reaction solidify after cooling;
Described " prepreg " distinguished with the model of its glass fabric, and common prepreg model has 7628,1078,2116,1080 etc.
2, in such scheme, described central layer at least by two layers of resin content lower than the first prepreg of the 3rd prepreg be arranged at resin content between two-layer the first prepreg and form lower than the second prepreg of the first prepreg, described the first prepreg is that model is that 7628 resin contents are 40% ~ 50% prepreg, the second prepreg is that model is that 7628 resin contents are 50% ~ 70% prepreg, and the 3rd prepreg is that model is that 1078 resin contents are 61% ~ 72% prepreg.
3, in such scheme, the bottom land of described groove is coated with the first prepreg or the 3rd prepreg.
4, in such scheme, between described central layer and central layer, between the 3rd prepreg and the 3rd prepreg and be provided with copper sheet between central layer and the 3rd prepreg; Be equipped with printing ink on the both side surface of described wiring board.
5, in such scheme, the purpose of described " bottom land of groove is coated with the first prepreg or the 3rd prepreg " is to protect described copper sheet not to be exposed in air, to prevent the copper sheet oxidation.
6, in such scheme, the part that described wiring board is not offered groove is symmetrical structure on thickness direction.
The utility model operation principle and advantage:
Offer groove for bending by the side surface at hardboard, reduced the thickness of wiring board at the need bending area, and to remain with model between groove bottom land and opposite side surface be that 1078 resin contents are 61% ~ 72% the 3rd prepreg, because the resin content of the 3rd prepreg is higher, make the wiring board can be crooked in the zone of offering groove and do not fracture, simultaneously the bending area of corresponding described wiring board is provided with flexible ink on the opposite side surface, to guarantee wiring board under case of bending, the flexible ink of bending area does not ftracture; The utility model is made improvement on the basis of hardboard, make it not only possess the cheap advantage of hardboard, simultaneously also possesses soft board and the Rigid Flex volume is little, flexible and advantage that can the stereoscopic three-dimensional assembling.
Description of drawings
Accompanying drawing 1 is the utility model embodiment one to three wiring board flat condition stereogram;
Accompanying drawing 2 is the utility model embodiment one to three wiring board case of bending schematic diagram;
Accompanying drawing 3 is the utility model embodiment one sectional view;
Accompanying drawing 4 is the utility model embodiment two sectional views;
Accompanying drawing 5 is the utility model embodiment three sectional views.
In above accompanying drawing: 1, wiring board; 2, bending area; 3, groove; 4, the second prepreg; 5, the 3rd prepreg; 6, copper sheet; 7, printing ink; 8, flexible ink; 9, the first prepreg.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment one: flexible wiring board
Shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, this wiring board 1 is mainly by central layer with some prepregs are stacked consists of, described central layer is that model is the second prepreg 4 of 7628, the resin content of the second prepreg 4 is that outwards to be disposed with copper sheet 6, the second prepreg 4, model be 1078 the 3rd prepreg 5, copper sheet 6 and printing ink 7 in 45%, the second prepreg 4 both sides.
One side surface of described wiring board 1 offers groove 3 for bending at bending area 2, the length direction of this groove 3 is perpendicular to the bending direction of wiring board 1, and groove 3 runs through described wiring board 1 on Width, the resin content that remains with one the 3rd prepreg 5 and printing ink 7, the three prepregs 5 between the bottom land of groove 3 and wiring board 1 opposite side surface is 68%; The bending area 2 of the corresponding described wiring board 1 in opposite side surface is provided with flexible ink 8; The bottom land of described groove 3 is coated with the 3rd prepreg 5, protects described copper sheet 6 not to be exposed in air with this, prevents copper sheet 6 oxidations.
Embodiment two: flexible wiring board
Shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 4, this wiring board 1 center is that a model is the second prepreg 4 of 7628 resin contents 47%, and the first prepreg 9, copper sheet 6, the model that this second prepreg 4 both sides are 7628 resin contents 52% by model from inside to outside successively is the 3rd prepreg 5, the copper sheet 6 of 1078 resin contents 68% and printing ink 7 is stacked consists of.
One side surface of described wiring board 1 offers groove 3 for bending at bending area 2, the length direction of this groove 3 is perpendicular to the bending direction of wiring board 1, and groove 3 runs through described wiring board 1 on Width, and the bottom land of groove 3 and wiring board remain with one first prepreg 9, copper sheet 6, the 3rd prepreg 5, copper sheet 6 and printing ink 7 between 1 opposite side surface; The bending area 2 of the corresponding described wiring board 1 in opposite side surface is provided with flexible ink 8; The bottom land of described groove 3 is coated with the first prepreg 9, protects described copper sheet 6 not to be exposed in air with this, prevents copper sheet 6 oxidations.
Embodiment three: flexible wiring board
Shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 4, this wiring board 1 center is that a model is the second prepreg 4 of 7628 resin contents 49%, and the first prepreg 9, the model that this second prepreg 4 both sides are 7628 resin contents 54% by copper sheet 6, model from inside to outside successively is that the second prepreg 4, the first prepreg 9 copper sheets 6, the model of 7628 resin contents 49% is the 3rd prepreg 5, the copper sheet 6 of 1078 resin contents 68% and printing ink 7 is stacked consists of.
One side surface of described wiring board 1 offers groove 3 for bending at bending area 2, the length direction of this groove 3 is perpendicular to the bending direction of wiring board 1, and groove 3 runs through described wiring board 1 on Width, and the bottom land of groove 3 and wiring board remain with one first prepreg 9, copper sheet 6, the 3rd prepreg 5, copper sheet 6 and printing ink 7 between 1 opposite side surface; The bending area 2 of the corresponding described wiring board 1 in opposite side surface is provided with flexible ink 8; The bottom land of described groove 3 is coated with the first prepreg 9, protects described copper sheet 6 not to be exposed in air with this, prevents copper sheet 6 oxidations.
the utility model is by offering groove 3 for bending at a side surface of hardboard at bending area 2, reduced the thickness of wiring board 1 at bending area 2, and to remain with model between groove 3 bottom lands and opposite side surface be that 1078 resin contents are 61% ~ 72% the 3rd prepreg 5, because the resin content of the 3rd prepreg 5 is higher, make the wiring board 1 can be crooked in bending 2 zones of offering groove 3 and do not fracture, simultaneously the bending area 2 of corresponding described wiring board 1 is provided with flexible ink 8 on the opposite side surface, to guarantee that wiring board 1 is under case of bending, the flexible ink 8 of bending area 2 does not ftracture, the present invention makes improvement on the basis of hardboard, make it not only possess the cheap advantage of hardboard, simultaneously also possesses soft board and the Rigid Flex volume is little, flexible and advantage that can the stereoscopic three-dimensional assembling.
In above-described embodiment, only offer a groove 3 in the bending zone 2 of a side surface of wiring board 1, and in actual applications, if all offer groove 3 in the both side surface of wiring board 1, spaced apartly on the surface, one or both sides be provided with a plurality of grooves 3, also can reach same effect.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow person skilled in the art scholar can understand content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection range of the present utility model.
Claims (4)
1. flexible wiring board, this wiring board is mainly by central layer with some prepregs are stacked consists of, it is characterized in that: at least one side surface of described wiring board offers groove for bending at bending area, the length direction of this groove is perpendicular to the bending direction of wiring board, and groove runs through described wiring board on Width, at least remain with one the 3rd prepreg between the bottom land of groove and wiring board opposite side surface, the bending area of the corresponding described wiring board in opposite side surface is provided with flexible ink.
2. flexible wiring board according to claim 1, it is characterized in that: the bottom land of described groove is coated with the first prepreg or the 3rd prepreg.
3. flexible wiring board according to claim 1 is characterized in that: between described central layer and central layer, between the 3rd prepreg and the 3rd prepreg and be provided with copper sheet between central layer and the 3rd prepreg; Be equipped with printing ink on the both side surface of described wiring board.
4. flexible wiring board according to claim 1 is characterized in that: the part that described wiring board is not offered groove is symmetrical structure on thickness direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622147 CN202979456U (en) | 2012-11-22 | 2012-11-22 | Bendable circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622147 CN202979456U (en) | 2012-11-22 | 2012-11-22 | Bendable circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202979456U true CN202979456U (en) | 2013-06-05 |
Family
ID=48520470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220622147 Expired - Fee Related CN202979456U (en) | 2012-11-22 | 2012-11-22 | Bendable circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202979456U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602443A (en) * | 2013-10-30 | 2015-05-06 | 胡夫休尔斯贝克及福尔斯特公司 | Electronic module for vehicle door handle having flexible circuit board |
| CN111615253A (en) * | 2020-05-22 | 2020-09-01 | 深圳市辉煌线路板有限公司 | Bendable rigid multilayer PCB |
-
2012
- 2012-11-22 CN CN 201220622147 patent/CN202979456U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104602443A (en) * | 2013-10-30 | 2015-05-06 | 胡夫休尔斯贝克及福尔斯特公司 | Electronic module for vehicle door handle having flexible circuit board |
| CN104602443B (en) * | 2013-10-30 | 2019-11-15 | 胡夫·许尔斯贝克和福斯特有限及两合公司 | The electronic module with flexible circuit board for motor vehicle door handle |
| CN111615253A (en) * | 2020-05-22 | 2020-09-01 | 深圳市辉煌线路板有限公司 | Bendable rigid multilayer PCB |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20171122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |