CN201657484U - Bend-resistant flexible circuit board - Google Patents
Bend-resistant flexible circuit board Download PDFInfo
- Publication number
- CN201657484U CN201657484U CN2010201055850U CN201020105585U CN201657484U CN 201657484 U CN201657484 U CN 201657484U CN 2010201055850 U CN2010201055850 U CN 2010201055850U CN 201020105585 U CN201020105585 U CN 201020105585U CN 201657484 U CN201657484 U CN 201657484U
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- circuit board
- flexible circuit
- district
- bending district
- finger
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Abstract
The utility model relates to a bend-resistant flexible circuit board, comprising a main circuit area, at least one finger and a bending area, wherein the bending area is connected between the finger and the main circuit area; and the surface layer of the bending area is provided with a copper layer which is provided with a hollow area. The bend-resistant flexible circuit board is provided with the hollow area on the copper layer of the bending area, thus having reliable electric connection and simultaneously having good bending resistance.
Description
Technical field
The utility model relates to a kind of wiring board, relates in particular to a kind of flexible circuit board of bend resistance.
Background technology
A large amount of electronic devices is widely used among the daily life, and flexible circuit board has plurality of advantages such as saving space, weight reduction and flexibility height and more and more is applied on the various electronic devices because of it.
Flexible circuit board often need be slided or bend, so it must have good bend resistance performance.No matter be single sided board or double sided board, need bending when its assembling pressure welding and use usually.For example, for the double-faced flexible wiring board that had tin hole finger, need bending during its assembling pressure welding.Double sided board normally is provided with finger, main line district, reaches the bending district between finger and main line district in the prior art, it is thicker to connect finger place circuit at the TOP face, simultaneously finger root next door plating has in large area copper and has coverlay to cover, and there is in large area copper BOT face finger junction and has coverlay to cover, referring to Fig. 1 and Fig. 2, it is respectively the TOP layer of double sided board in the prior art and the structural representation of BOT layer.Because finger pressure welding bending district has two-sided epiphragma to cover, and the two sides has copper in large area simultaneously, integral thickness is thicker, material becomes fragile after the pressure welding high-temperature heating, so that bending back easy fracture, causing has influenced whole electric property after the assembling of product open circuit, has reduced the production yield, has also increased the production cost.
The utility model content
The technical problems to be solved in the utility model is, at the defective of the above-mentioned flexible circuit board bending easy fracture of prior art, provides a kind of bend resistance functional and be electrically connected the flexible circuit board of reliable bend resistance.
The technical scheme that its technical problem that solves the utility model adopts has provided a kind of flexible circuit board of bend resistance, it comprises the main line district that is used to form main line, at least one finger, and bending district, described bending district is connected between described finger and the described main line district, the top layer in described bending district is provided with the copper floor, and the copper floor in the described bending district is provided with hollow area.
In above-mentioned flexible circuit board, the hollow area on the face that is provided with components and parts of described flexible circuit board is a plurality of.
In above-mentioned flexible circuit board, each hollow area is arranged at the bending district place corresponding with the root of each finger.
In above-mentioned flexible circuit board, the side of each hollow area is 0.075mm-0.1mm to the distance with the edge of its most contiguous copper layer.
In above-mentioned flexible circuit board, described bending district is provided with the auxiliary bending district that is coated with the copper floor away from a side of finger, and the copper floor in the described auxiliary bending district is a copper floor with holes.
In above-mentioned flexible circuit board, the hole in the described auxiliary bending district is circular, square or triangle.
In above-mentioned flexible circuit board, described hole is a plurality of, and described a plurality of hole is evenly distributed on the copper floor in the described auxiliary bending district.
In above-mentioned flexible circuit board, the width in described auxiliary bending district is less than 2mm.
The flexible circuit board that the utility model provides, it had both remained with the reliability of part copper floor to guarantee that line electricity connects by on the copper floor in bending district hollow area being set thereby bending is distinguished, and had also improved the pliability in bending district simultaneously, improved the bend resistance performance of flexible circuit board, and yields.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of the top layer of double-faced flexible wiring board in the prior art;
Fig. 2 is the structural representation of the bottom of double-faced flexible wiring board in the prior art;
Structural representation in the preferred embodiment that Fig. 3 provides for the utility model on the face that is provided with components and parts of flexible circuit board;
Structural representation in the preferred embodiment that Fig. 4 provides for the utility model on the bottom of two-sided flexible circuit board;
Structural representation in the another preferred embodiment that Fig. 5 provides for the utility model on the bottom of two-sided flexible circuit board.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utility model is by improving bending district on the flexible circuit board to improve its bend resistance performance.The utility model provides flexible circuit board mainly to comprise finger 1, is used to form main line district 3, and the bending district 2 of main line, and the bending district is connected between finger and the main line district, points and is at least one.The top layer that bends the district comprises copper floor and base material 22, and the copper floor is arranged at finger and junction, main line district, and outside finger and the junction, main line district is base material 22, and above-mentioned copper layer is ground copper.Copper floor in the bending district is provided with hollow area 21, is electrically connected reliably with the main line district to guarantee finger thereby kept the part copper floor, and has reduced the distribution that the copper floor is gone up in the bending district, has improved the pliability and the bend resistance performance in bending district.
Referring to Fig. 3 to shown in Figure 5, the structural representation in the preferred embodiment that Fig. 3 provides for the utility model on the face that is provided with components and parts of flexible circuit board; Structural representation in the preferred embodiment that Fig. 4 provides for the utility model on the bottom of two-sided flexible circuit board.The utility model both can be applicable to single sided board, also can be applicable to double sided board, no matter was the top layer that is provided with components and parts of single sided board or double sided board, and its principle can be referring to Fig. 3.Bending district on the face that is provided with components and parts of its flexible circuit board is provided with hollow area, in Fig. 3, points to a plurality of, preferably, hollow area is a plurality of, and the below of each finger correspondence one by one is provided with hollow area, and each hollow area is arranged at the corresponding part of root that the bending district is last and point.Hollow area makes the part of having vacant position of the copper floor in the bending district, hollow area can have any shape, but the distance at the edge of the side of hollow area and its most contiguous copper layer is 0.075mm-0.1mm, and promptly the side of each hollow area is 0.075mm-0.1mm with the distance at the edge of the copper layer of corresponding with it finger below.
Referring to Fig. 4, when flexible circuit board is double sided board, its bottom is provided with circuit, preferably, the hollow area that is provided with in the bending district only keeps the outermost of copper floor, and only keeps the side of the copper layer of outermost finger root below, to be connected with follow-up line electricity, can significantly reduce the amount of copper layer like this, both improve the pliability of wiring board, also reduce cost.In like manner, the distance at the edge of the side of hollow area and its most contiguous copper layer is 0.075mm-0.1mm.
Referring to Fig. 5, it is the structural representation on the bottom of flexible circuit board two-sided in the another preferred embodiment.As further improvement, the wiring board that the utility model provides also comprises auxiliary bending district 5, and it is arranged at the side away from finger in bending district, and the width in auxiliary bending district is less than 2mm.Because auxiliary bending is coated with the copper floor in the district, the copper floor in the auxiliary bending district of the wiring board that the utility model provides is provided with hole 51, and preferably, hole 51 is a plurality of, and the hole can be circular, square, triangle or other arbitrary shape.Preferably, a plurality of holes are evenly distributed on the copper floor in the described auxiliary bending district, form latticed, thereby the copper in the auxiliary bending district on next door, bending district is distributed uniformly, the stress when further can disperse to bend improves the bend resistance performance.Certainly, auxiliary bending district also can be arranged on the circuit aspect of the top layer of flexible circuit board or single sided board.
Preferably, above-mentioned hollow area 21 and hole 51 can form when making wiring board in direct etching, and hollow area and copper layer edge are equivalent to form many leads, even certain bar circuit bending disconnects, other circuit still can guarantee the electrical connection of circuit, and, the distance at bending district and copper floor edge make its neither can too narrow easy fracture can be too not wide and influence pliability yet.
In sum, the wiring board that the utility model provides, it goes up and bends the copper floor on next door, district by minimizing bending district, while reserve part copper layer, thereby the folding s tress that disperses the bending district to be born, the pliability of raising wiring board makes wiring board both guarantee reliable electrical connectivity, have good bend resistance performance again, improved the qualification rate of product.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (8)
1. the flexible circuit board of a bend resistance, comprise the main line district that is used to form main line, at least one finger, and bending district, described bending district is connected between described finger and the described main line district, the top layer in described bending district is provided with the copper floor, it is characterized in that the copper floor in the described bending district is provided with hollow area.
2. flexible circuit board according to claim 1 is characterized in that, the hollow area on the face that is provided with components and parts of described flexible circuit board is a plurality of.
3. flexible circuit board according to claim 2 is characterized in that, each hollow area is arranged at the bending district place corresponding with the root of each finger.
4. flexible circuit board according to claim 3 is characterized in that, the side of each hollow area is 0.075mm-0.1mm to the distance with the edge of its most contiguous copper layer.
5. flexible circuit board according to claim 1 is characterized in that, described bending district is provided with the auxiliary bending district that is coated with the copper floor away from a side of finger, and the copper floor in the described auxiliary bending district is a copper floor with holes.
6. flexible circuit board according to claim 5 is characterized in that, the hole in the described auxiliary bending district is circular, square or triangle.
7. flexible circuit board according to claim 6 is characterized in that, described hole is a plurality of, and described a plurality of hole is evenly distributed on the copper floor in the described auxiliary bending district.
8. according to claim 5 or 6 or 7 described flexible circuit board, it is characterized in that the width in described auxiliary bending district is less than 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201055850U CN201657484U (en) | 2010-01-28 | 2010-01-28 | Bend-resistant flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201055850U CN201657484U (en) | 2010-01-28 | 2010-01-28 | Bend-resistant flexible circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201657484U true CN201657484U (en) | 2010-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201055850U Expired - Lifetime CN201657484U (en) | 2010-01-28 | 2010-01-28 | Bend-resistant flexible circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201657484U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095349A (en) * | 2011-10-31 | 2013-05-08 | 深圳光启高等理工研究院 | Wireless router based on flexible printed circuit board |
| CN103700320A (en) * | 2013-12-20 | 2014-04-02 | 京东方科技集团股份有限公司 | Flexible display and manufacturing method thereof |
| 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 |
| CN105472876A (en) * | 2015-12-29 | 2016-04-06 | 广东欧珀移动通信有限公司 | Mobile terminal, flexible printed circuit and manufacturing method therefor |
| CN106060734A (en) * | 2016-07-27 | 2016-10-26 | 歌尔股份有限公司 | FPCB structure, loudspeaker module and manufacturing method of FPCB |
| CN107708292A (en) * | 2017-10-27 | 2018-02-16 | 广东生益科技股份有限公司 | The PCB and its manufacture method of buried via hole crackle can effectively be reduced |
| CN109559644A (en) * | 2017-09-27 | 2019-04-02 | 上海和辉光电有限公司 | A kind of flexible display panels and display device |
| WO2021127845A1 (en) * | 2019-12-23 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Flexible printed circuit board |
-
2010
- 2010-01-28 CN CN2010201055850U patent/CN201657484U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103095349A (en) * | 2011-10-31 | 2013-05-08 | 深圳光启高等理工研究院 | Wireless router based on flexible printed circuit board |
| CN103700320A (en) * | 2013-12-20 | 2014-04-02 | 京东方科技集团股份有限公司 | Flexible display and manufacturing method thereof |
| 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 |
| CN105472876A (en) * | 2015-12-29 | 2016-04-06 | 广东欧珀移动通信有限公司 | Mobile terminal, flexible printed circuit and manufacturing method therefor |
| CN106060734A (en) * | 2016-07-27 | 2016-10-26 | 歌尔股份有限公司 | FPCB structure, loudspeaker module and manufacturing method of FPCB |
| WO2018018837A1 (en) * | 2016-07-27 | 2018-02-01 | 歌尔股份有限公司 | Fpcb structure, speaker module, and manufacturing method for fpcb structure |
| CN109559644A (en) * | 2017-09-27 | 2019-04-02 | 上海和辉光电有限公司 | A kind of flexible display panels and display device |
| CN107708292A (en) * | 2017-10-27 | 2018-02-16 | 广东生益科技股份有限公司 | The PCB and its manufacture method of buried via hole crackle can effectively be reduced |
| WO2021127845A1 (en) * | 2019-12-23 | 2021-07-01 | 瑞声声学科技(深圳)有限公司 | Flexible printed circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen BYD Electronic Component Co., Ltd. Assignor: Biyadi Co., Ltd. Contract record no.: 2011440020248 Denomination of utility model: Bend-resistant flexible circuit board Granted publication date: 20101124 License type: Exclusive License Record date: 20110623 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |