CN202353934U - Golden finger of FPC (Flexible Printed Circuit Board) - Google Patents
Golden finger of FPC (Flexible Printed Circuit Board) Download PDFInfo
- Publication number
- CN202353934U CN202353934U CN2011204414120U CN201120441412U CN202353934U CN 202353934 U CN202353934 U CN 202353934U CN 2011204414120 U CN2011204414120 U CN 2011204414120U CN 201120441412 U CN201120441412 U CN 201120441412U CN 202353934 U CN202353934 U CN 202353934U
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- China
- Prior art keywords
- fpc
- welding
- golden finger
- golden
- face
- Prior art date
- 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
The utility model discloses a golden finger of an FPC (Flexible Printed Circuit Board), which comprises golden fingers on a welding face and golden fingers on a non-welding face, wherein the golden fingers on the welding face and the golden fingers on the non-welding face have different lengths; and preferably, the golden fingers on the welding face are 0.3-1mm longer than the golden fingers on the non-welding face. For the golden finger, copper foil on both sides of the golden finger at the welding end of the FPC is subjected to dislocation treatment, that is the copper foil on the welding face is 0.3-1.0mm longer than the copper foil on the non-welding face, so that the processing difficulty of welding is reduced, the possibility that the golden finger is broken in the welding process is decreased, and the welding qualification rate of products is increased; the stress strength of the welding position of the FPC is enhanced, the tensile failure, breaking, rosin joint and the like of the welding position of the FPC are reduced in the production process, and the quality and lives of assembled products are improved and prolonged.
Description
Technical field
The utility model relates to a kind of structural design of FPC golden finger; More precisely, the structure of the FPC golden finger of a kind of internal stress that can strengthen the FPC solderability, reduce the weld of FPC of design, the technology difficulty that reduces the FPC welding, raising FPC welding yield.
Background technology
FPC is flexible print circuit board (Flexible Printed Circuit Board, be called for short FPC), and being to use PI (polyimides) film is base material, the wiring board sheet material of processing with the Copper Foil pressing.
With the rigid printed substrate of PCB relatively, the FPC wiring board possesses advantages such as free bend, folding, coiling.During completed knocked down products; FPC can at random arrange according to the layout of product inner space as lead; Thereby can in three dimensions, at random arrange components and parts, and can cancel interface unit between lead and the wiring board, therefore; FPC can make miniaturization of electronic products, precise treatment, and product reliability improves greatly.FPC has been widely used in fields such as mobile communication product, laptop computer, consumer electronics product, space flight, Military Electronic Equipment.
The key property of FPC can realize that exactly circuit connects; Existing connected mode mainly contains two kinds: a kind of connector that is to use connects; Though it is convenient to use connector to connect; It is big that but it installs required space, and the shortcomings such as instability, use cost height of pegging graft make it can only be used for the pcb board that some spaces are big, hardness is high.Common circuit connects the mode that also is to use welding; And will FPC be welded; Just must carry out PROCESS FOR TREATMENT to its golden finger; The FPC golden finger is that two-sided PI is removed an only zone of surplus Copper Foil, and its ultra-thin thickness extension performance of copper in addition is not again fine, just makes the fragility that the golden finger end of FPC becomes unusual; All can add pliability and the stretch-proof ability of PI layer so present PROCESS FOR TREATMENT technology is general, but the technology difficulty of the anti-shearing stress of FPC and welding all there is not very big raising with the welding yield in the blank space of golden finger with reinforcement golden finger end.FPC golden finger of the prior art also has following shortcoming: 1, the ability of the anti-stress in FPC welding position is very low, and problems such as be easy in production and transport process and production process, occur fractureing, golden finger breaks away from, the welding position comes off; 2, the technology difficulty of FPC welding process increases, and causes rosin joint to cause product failure easily; 3, a FPC welding limiting range of stress that can bear is very little, makes the quality and the life-span of assembling back product reduce.
The utility model content
The utility model provides the golden finger of a kind of FPC in order to solve the problem that exists in the prior art, effectively prevents the damage of FPC golden finger; Strengthened the solderability of FPC; Reduce the internal stress of the weld of FPC, also reduced the technology difficulty of FPC welding simultaneously, improved FPC welding yield.
The technical scheme of the utility model is: the golden finger of FPC comprises the golden finger of solder side and the golden finger of non-solder side, being uneven in length of the golden finger of said solder side and the golden finger of non-solder side.
Preferably: the golden finger of said solder side is than the long 0.3mm-1mm of the golden finger of non-solder side.
The utility model is with the processing that misplaces of the two sides Copper Foil of FPC welding ends golden finger; Be the length long 0.3mm~1.0mm of the Copper Foil of solder side than the Copper Foil of non-solder side; Reduced to weld the difficulty of processing of this procedure; The possibility that golden finger fractures when having reduced welding has improved product welding yield; Strengthen the anti-stress intensity of FPC welding position, reduced that the FPC welding position produces in process of production break, fracture, rosin joint etc., improved the quality and the life of product of assembled product.
Description of drawings
Fig. 1 shows the positive and negative structural representation of the utility model FPC plate.
Fig. 2 shows the profile of the utility model FPC plate.
Embodiment
Further specify below in conjunction with the embodiment of accompanying drawing the utility model.
Like Fig. 1, shown in Figure 2; The FPC wiring board; Comprise solder side 1 and non-solder side 2, also can become the positive and negative of FPC, its exposed Copper Foil is called the golden finger 3 of solder side and the golden finger 4 of non-solder side; The Copper Foil on FPC golden finger two sides adopts dislocation to handle, and the length of the golden finger 3 of solder side is than the distance of the length 0.3~1mm of the golden finger 4 of non-solder side.Because the golden finger length on FPC two sides is different, make relatively weaker golden finger form two cascaded surfaces with the position that is connected of wiring board, reduced the concentrated stress that produces in the FPC bending process, the anti-stress intensity of enhancing FPC welding ends.The difficulty of processing that can reduce to weld this procedure is handled in such dislocation, and the possibility that golden finger fractures when having reduced welding has improved product welding yield.Simultaneously also strengthened the anti-stress intensity in FPC welding position, reduce that the FPC welding position produces in process of production break, fracture, bad phenomenon such as rosin joint, improved the quality and the life of product of assembled product.
The above is merely the utility model preferred implementation, is not the practical range that is used for limiting the utility model, and the equivalence of in the protection range of the utility model, being done in every case changes and modifies, and all should think to have fallen in the protection range of the utility model.
Claims (2)
1.FPC golden finger, comprise the golden finger of solder side and the golden finger of non-solder side, it is characterized in that: being uneven in length of the golden finger of said solder side and the golden finger of non-solder side.
2. the golden finger of FPC according to claim 1, it is characterized in that: the golden finger of said solder side is than the long 0.3mm-1mm of the golden finger of non-solder side.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011204414120U CN202353934U (en) | 2011-11-09 | 2011-11-09 | Golden finger of FPC (Flexible Printed Circuit Board) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011204414120U CN202353934U (en) | 2011-11-09 | 2011-11-09 | Golden finger of FPC (Flexible Printed Circuit Board) |
Publications (1)
Publication Number | Publication Date |
---|---|
CN202353934U true CN202353934U (en) | 2012-07-25 |
Family
ID=46542887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2011204414120U Expired - Fee Related CN202353934U (en) | 2011-11-09 | 2011-11-09 | Golden finger of FPC (Flexible Printed Circuit Board) |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN202353934U (en) |
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2011
- 2011-11-09 CN CN2011204414120U patent/CN202353934U/en not_active Expired - Fee Related
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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: 20120725 Termination date: 20201109 |
|
CF01 | Termination of patent right due to non-payment of annual fee |