CN201039586Y - A flexible line board for preventing gold fingers from breaking - Google Patents
A flexible line board for preventing gold fingers from breaking Download PDFInfo
- Publication number
- CN201039586Y CN201039586Y CNU200620016163XU CN200620016163U CN201039586Y CN 201039586 Y CN201039586 Y CN 201039586Y CN U200620016163X U CNU200620016163X U CN U200620016163XU CN 200620016163 U CN200620016163 U CN 200620016163U CN 201039586 Y CN201039586 Y CN 201039586Y
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- Prior art keywords
- circuit board
- sides
- opening
- golden finger
- utility
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Abstract
The utility model discloses a soft circuit board used for preventing gold finger from being broken, comprising a gold finger bonding pad in a double-face open structure, wherein, both sides of the opening at one side respectively extend to the velum direction to form the stiffened plate in relation to the two sides of the opening on other side. The utility model adopts the double-face crossed open structure, so the stress centralizing problem can be effectively avoided, so as to prevent the gold finger from being broken. Simultaneously, the utility model adopts single-side hollow manner, thereby reducing the whole thickness of the soft circuit board.
Description
[technical field]
The utility model relates to a kind of flexible circuit board (Flexible Printed Circuit is called for short FPC), relates in particular to a kind of flexible circuit board that prevents that golden finger from fractureing.
[background technology]
Along with the fast development of mobile communication, the popularity rate of mobile phone is more and more higher, and mobile phone has become out and out multimedia information dissemination carrier, for more prompt people's work and life providing and information service easily.Current people have had higher requirement to the combination property of mobile phone, and simultaneously, keen competition in the industry makes liquid crystal display module (Liquid Crystal Module is called for short LCM) technology become better and approaching perfection day by day.In order to prolong the useful life of product, improve cost performance, and the liquid crystal display module is as an important component part of mobile phone, optimize its structural design and not only saved cost but also behave efficiently beyond doubt.And flexible circuit board is one of modal assembly in the liquid crystal display module, and the quality of its design directly influences the product yield of entire module.
Now, flexible circuit board manually is welded on the mainboard by two-sided pad, become a kind of maturation, utilization process comparatively widely.And face the trend of the slim design of current mobile phone, many companies often become the pad design of flexible circuit board the form of single-face hollowed-out, the flexible circuit board of single-face hollowed-out as shown in Figure 1 and Figure 2: comprise double-deck district 1, the single-face hollowed-out district is pad position 2 (as seen), the part 3 (invisible) that the single-face hollowed-out district is pushed down by the flexible circuit board epiphragma.On the one hand, single-face hollowed-out district thickness is 10Z (10Z=0.035mm), and the thickness of common two-sided pad is about 0.10mm, as shown in Figure 3, Figure 4, adopts the connected mode of single-face hollowed-out just thin a lot of than general two-sided pad connected mode like this; On the other hand, owing to adopt the mode of opening, in the single-face hollowed-out district is that place, pad position opens the mouth that waits width up and down, like this, when flexible circuit board bends, Copper Foil shear surface up and down overlaps, be easy to just produce the obvious stress concentration problem like this at A point place, double-deck simultaneously district thickness is 0.12mm to 0.20mm, and vacancy section thickness is 0.035mm, and both differ an order of magnitude, cause the pad fracture of A point place easily, make to connect open circuit, give to produce to operate on the line and bring great inconvenience, have a strong impact on the production yield.
[summary of the invention]
Technical problem underlying to be solved in the utility model is to overcome the deficiencies in the prior art, from the angle of structural design, provides a kind of flexible circuit board that prevents that golden finger from fractureing, and improves the buckling strength of golden finger pad.
A kind of flexible circuit board that prevents that golden finger from fractureing comprises the golden finger pad, and described golden finger pad is the structure of two sides opening, and wherein, the both sides of a described opening all extend to form reinforced sheet to the epiphragma direction respectively with respect to the both sides of another side opening.
Above-mentioned prevent the flexible circuit board that golden finger fractures, wherein, identical length is all extended to form reinforced sheet to the epiphragma direction respectively with respect to the both sides of another side opening in the both sides of a described opening.
Above-mentioned prevent the flexible circuit board that golden finger fractures, wherein, it is 0.30mm to 0.50mm that identical length range is all extended to the epiphragma direction respectively with respect to the both sides of another side opening in the both sides of a described opening.
The beneficial effects of the utility model and advantage are as follows:
Owing to adopt the structure of two-sided staggered opening, effectively avoided the problem that described stress is concentrated, prevented the phenomenon that golden finger is fractureed, adopt the design of single-face hollowed-out simultaneously, therefore also reduced the integral thickness of flexible circuit board.
Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the flexible circuitry plate structure vertical view of existing single-face hollowed-out.
Fig. 2 is the flexible circuitry plate structure right view of existing single-face hollowed-out.
Fig. 3 is the flexible circuitry plate structure vertical view of existing two-sided pad.
Fig. 4 is the flexible circuitry plate structure right view of existing two-sided pad.
Fig. 5 is the flexible circuitry plate structure left view of the two-sided staggered opening of the utility model.
Fig. 6 is the flexible circuit board upper and lower opening magnitude relationship structural representation of Fig. 5.
[embodiment]
Present embodiment is preferred specific embodiment, as illustrated in Figures 5 and 6.
A kind of flexible circuit board that prevents that golden finger from fractureing comprises double-deck district 1, and the single-face hollowed-out district is golden finger pad position 2 (as seen), the part 3 (invisible) that the single-face hollowed-out district is pushed down by the flexible circuit board epiphragma.As shown in Figure 5, the FPC pad is that the epiphragma 7 that is attached on the Copper Foil 6 is opened a gap the part that its Copper Foil is exposed.Therefore, to be golden finger pad position 2 by epiphragma 7 up and down window vacancy section obtains.Wherein said golden finger pad position 2 is the structure of two sides opening, be respectively upper shed 4 and under shed 5, the width of upper shed 4 is designed to (L) mm (for ease of explanation, here be defined as L), the width of under shed 5 is designed to (L+0.60) mm, monolaterally have more 0.30mm, make the upper and lower opening certain distance that staggers, form the structure of staggered opening than upper shed 4.
When adopting upper and lower opening to stagger, the shear surface that A, B place form staggers mutually, upper shed simultaneously is more following little, when bending, also play a supporting role, so just significantly reduced stress and concentrated, increased the bending strength of golden finger pad, verified through production test, can effectively prevent fractureing of golden finger pad, and when helping producing anchor clamps repeatedly test and reprocess.
Be to be the test of example (volume production 600K) with BYD FPC674C-V0 model below, test data such as following table:
| Method for designing | Bent number of times |
| Do not adopt the staggered mode of windowing | 2 times |
| Adopt the staggered mode of windowing | 6 times |
Certain further improvement of the utility model, the width that also can be designed under shed 5 is (L) mm, and the width of upper shed 4 is the structure of (L+0.60) mm, and the effect that it produced is the same with effect.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design; can also make some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the utility model is determined by claims of being submitted to.
Claims (3)
1. flexible circuit board that prevents that golden finger from fractureing, comprise the golden finger pad, described golden finger pad is the structure of two sides opening, it is characterized in that: the both sides of a described opening all extend to form reinforced sheet to the epiphragma direction respectively with respect to the both sides of another side opening.
2. a kind of flexible circuit board that prevents that golden finger from fractureing as claimed in claim 1 is characterized in that: identical length is all extended to form reinforced sheet to the epiphragma direction respectively with respect to the both sides of another side opening in the both sides of a described opening.
3. a kind of flexible circuit board that prevents that golden finger from fractureing as claimed in claim 2 is characterized in that: it is 0.30mm to 0.50mm that identical length range is all extended to the epiphragma direction respectively with respect to the both sides of another side opening in the both sides of a described opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620016163XU CN201039586Y (en) | 2006-12-02 | 2006-12-02 | A flexible line board for preventing gold fingers from breaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620016163XU CN201039586Y (en) | 2006-12-02 | 2006-12-02 | A flexible line board for preventing gold fingers from breaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201039586Y true CN201039586Y (en) | 2008-03-19 |
Family
ID=39212116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200620016163XU Expired - Lifetime CN201039586Y (en) | 2006-12-02 | 2006-12-02 | A flexible line board for preventing gold fingers from breaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201039586Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938883A (en) * | 2010-08-26 | 2011-01-05 | 厦门弘信电子科技有限公司 | Single-side double contact flexible circuit board and making method thereof |
| CN102098873A (en) * | 2011-02-16 | 2011-06-15 | 珠海元盛电子科技股份有限公司 | Pad structure for preventing pad from fracturing |
| CN102238809A (en) * | 2010-04-23 | 2011-11-09 | 比亚迪股份有限公司 | Flexible printed circuit (FPC) hollowed board and manufacturing method thereof |
| CN101553089B (en) * | 2009-05-11 | 2012-04-25 | 昆山亿富达电子有限公司 | Production technology of hollow-out double-sided flexible printed circuit board |
| CN103096642A (en) * | 2011-10-27 | 2013-05-08 | 比亚迪股份有限公司 | Manufacture method of flexible circuit board |
| CN113747684A (en) * | 2021-07-30 | 2021-12-03 | 珠海中京元盛电子科技有限公司 | Technology for manufacturing fully-suspended finger FPC |
-
2006
- 2006-12-02 CN CNU200620016163XU patent/CN201039586Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101553089B (en) * | 2009-05-11 | 2012-04-25 | 昆山亿富达电子有限公司 | Production technology of hollow-out double-sided flexible printed circuit board |
| CN102238809A (en) * | 2010-04-23 | 2011-11-09 | 比亚迪股份有限公司 | Flexible printed circuit (FPC) hollowed board and manufacturing method thereof |
| CN102238809B (en) * | 2010-04-23 | 2013-04-10 | 比亚迪股份有限公司 | Flexible printed circuit (FPC) hollowed board and manufacturing method thereof |
| CN101938883A (en) * | 2010-08-26 | 2011-01-05 | 厦门弘信电子科技有限公司 | Single-side double contact flexible circuit board and making method thereof |
| CN101938883B (en) * | 2010-08-26 | 2012-02-01 | 厦门弘信电子科技有限公司 | Making method of single-side double contact flexible circuit board |
| CN102098873A (en) * | 2011-02-16 | 2011-06-15 | 珠海元盛电子科技股份有限公司 | Pad structure for preventing pad from fracturing |
| CN103096642A (en) * | 2011-10-27 | 2013-05-08 | 比亚迪股份有限公司 | Manufacture method of flexible circuit board |
| CN103096642B (en) * | 2011-10-27 | 2015-08-26 | 比亚迪股份有限公司 | A kind of manufacture method of flexible circuit board |
| CN113747684A (en) * | 2021-07-30 | 2021-12-03 | 珠海中京元盛电子科技有限公司 | Technology for manufacturing fully-suspended finger FPC |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN BYD ELECTRONIC COMPONENT CO., LTD. Free format text: FORMER OWNER: BIYADI CO., LTD. Effective date: 20150901 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150901 Address after: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Patentee after: Shenzhen BYD Electronic Component Co., Ltd. Address before: Kwai Chung town Yanan Road, BYD Industrial Park in Longgang District of Shenzhen City, Guangdong province 518119 Patentee before: Biyadi Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080319 |
|
| EXPY | Termination of patent right or utility model |