CN107148141A - Golden finger structure and flexible PCB - Google Patents
Golden finger structure and flexible PCB Download PDFInfo
- Publication number
- CN107148141A CN107148141A CN201710433374.6A CN201710433374A CN107148141A CN 107148141 A CN107148141 A CN 107148141A CN 201710433374 A CN201710433374 A CN 201710433374A CN 107148141 A CN107148141 A CN 107148141A
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- China
- Prior art keywords
- golden finger
- cover layer
- curve
- fixing end
- finger structure
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0271—Arrangements for reducing stress or warp in rigid printed circuit boards, e.g. caused by loads, vibrations or differences in thermal expansion
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Structure Of Printed Boards (AREA)
Abstract
Golden finger structure disclosed by the invention, for flexible PCB, golden finger structure includes golden finger body, the first cover layer and the second cover layer.Golden finger body includes fixing end and connection end, and fixing end is connected with flexible PCB, and connection end is used to be connected with element to be connected.First cover layer is arranged on a surface of fixing end, and the first cover layer one side corresponding with fixing end is in the first curve.Second cover layer is arranged on the surface opposite with the first cover layer in fixing end, and the second cover layer one side corresponding with fixing end is in the second curve.First cover layer edge corresponding with fixing end is curved, reduce the stress that golden finger structure is produced at the first cover layer edge corresponding with fixing end, second cover layer edge corresponding with fixing end is also curved, the stress that golden finger structure is produced at the second cover layer edge corresponding with fixing end is reduced, so as to improve the intensity of golden finger structure.The invention also discloses a kind of flexible PCB.
Description
Technical field
The present invention relates to circuit board technology field, and in particular to a kind of golden finger structure and flexible PCB.
Background technology
Existing golden finger structure is easily broken off when transporting or being connected for other electronic components, so as to cause golden finger
Structure it is electrical bad.
The content of the invention
Embodiments of the present invention provide a kind of golden finger structure and flexible PCB.
The golden finger structure of embodiment of the present invention, for flexible PCB, the golden finger structure includes：
Golden finger body, the golden finger body includes fixing end and connection end, the fixing end and the flexible circuit
Plate is connected, and the connection end is used to be connected with element to be connected；
First cover layer, first cover layer is arranged on a surface of the fixing end, first cover layer with
The corresponding one side of the fixing end is in the first curve；With
Second cover layer, second cover layer is arranged on the table opposite with first cover layer in the fixing end
On face, second cover layer one side corresponding with the fixing end is in the second curve.
In some embodiments, first curve includes crest and trough, and second curve includes crest and ripple
Paddy, in the projection towards the golden finger body, the crest of the crest of first curve and second curve staggers, institute
The trough for stating the trough and second curve of the first curve staggers.The first cover layer in the present invention is corresponding with the fixing end
One side when being in the first curve, reduce stress of the golden finger structure in the generation of the first cover layer corresponding with fixing end edge；
Second cover layer edge corresponding with fixing end is also curved, reduces golden finger structure corresponding with fixing end in the second cover layer
Edge produce stress, so as to improve the intensity of golden finger structure.
In some embodiments, orthographic projection of first cover layer on the golden finger body is completely covered described
Orthographic projection of second cover layer on the golden finger body；Or
First cover layer is completely covered described in orthographic projection of second cover layer on the golden finger body
Orthographic projection on golden finger body；Or
Orthographic projection of first cover layer one side corresponding with the fixing end on the golden finger body, and it is described
Orthographic projection of the second cover layer one side corresponding with the fixing end on the golden finger body is intersected；Or
The crest of first curve is relative with the trough interval of second curve, the trough of first curve and institute
The peak separation for stating the second curve is relative.So it can further reduce golden finger structure corresponding with fixing end in the first cover layer
The stress that produces of edge, and answering of further reducing that golden finger structure produces at corresponding with the fixing end edge of the second cover layer
Power, and then avoid golden finger structure from being fractureed readily along the first curve edge corresponding with fixing end, or/and along the second curve
Edge corresponding with fixing end fractures.
In some embodiments, the golden finger body includes base material and multiple fingers, and the multiple finger is arranged on
On opposite two sides of the base material, the spaced setting of multiple fingers on the base material same side.Due to position
In the spaced setting of multiple fingers on base material same side, so as to avoid finger from linking together and cause short circuit.
In some embodiments, each finger offers via hole at the connection end, positioned at the base material
The position of the via hole of adjacent two finger on same side is different.The via hole of two adjacent fingers
Position is different, that is to say, that the center of multiple via holes not on the same line, due to finger offer it is strong at via hole
Degree is less than the intensity in the other positions of finger, it is thus possible to avoid line of centres folding of the golden finger structure along multiple via holes
It is disconnected.
In some embodiments, each end of the finger at the connection end offers semi-circular hole.Opening
For semi-circular hole, when finger and element to be connected welding, welding material (for example, scolding tin) can be diffused in opening, make hand
Finger can be preferably connected with element to be connected.
In some embodiments, to include copper foil, goldleaf or copper foil surface at least one of gold-plated for the finger.This
Sample can make finger have preferable electric conductivity and corrosion resistance.
In some embodiments, first cover layer is included from the two ends of first curve along from the fixing end
The first enhanced portion extended to the direction of the connection end, first enhanced portion is located at two sides of the golden finger body
Edge；Or/and
Second cover layer is included from the two ends of second curve along from the fixing end to the side of the connection end
To the second enhanced portion of extension, second enhanced portion is located at the both sides of the edge of the golden finger body.When golden finger structure exists
When being bent in the presence of power, the first enhanced portion, the second enhanced portion can absorb part folding force, so as to enhance golden finger
The intensity of structure.
In some embodiments, the width of first enhanced portion or/and second enhanced portion is more than or equal to
0.2mm.If the width of the first enhanced portion is less than 0.2mm, the folding force that the first enhanced portion can be caused to absorb is smaller, does not have
Further enhance the effect of the intensity of golden finger structure.
In some embodiments, the length of the connection end is 0.1mm-3mm.If because the too short meeting of the length of connection end
It is unfavorable for golden finger structure to be connected with element to be connected, easily produces larger moment of flexure if connection end is oversize and cause golden finger structure
Fracture, so it is suitable that the length of connection end, which is 0.1mm-3mm,.
In some embodiments, first curve is wave, and the wave period is 0.5mm-20mm；Or/and
Second curve is wave, and the wave period is 0.5mm-20mm.Due to the cycle of wave it is too small (
That is the quantity of crest and trough is too many) when, on the one hand, wave can be considered as close to straight line, just not have reduction stress
Effect；On the other hand, the manufacture less wave of wave period is relatively difficult and cost is also higher.Work as wave
The cycle of line is excessive, then the first curve (or second curve) only forms an arcuation on golden finger structure, and golden finger structure holds
Easily torn along the first curve (or second curve).
The flexible PCB of embodiment of the present invention includes：
Substrate；With
Golden finger structure described in above-mentioned any one embodiment, the golden finger structure is connected with the body.
The flexible PCB and golden finger structure of embodiment of the present invention by setting respectively in the both sides of golden finger body
First cover layer and the second cover layer, the first cover layer edge corresponding with fixing end are curved, reduce golden finger structure and exist
The stress that first cover layer edge corresponding with fixing end is produced, the second cover layer edge corresponding with fixing end is also curved,
The stress that golden finger structure is produced at the second cover layer edge corresponding with fixing end is reduced, so as to improve golden finger structure
Intensity.
The additional aspect and advantage of embodiments of the present invention will be set forth in part in the description, partly will be from following
Description in become obvious, or recognized by the practice of embodiments of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from description of the accompanying drawings below to embodiment is combined
Obtain substantially and be readily appreciated that, wherein：
Fig. 1 is the floor map of the golden finger structure of some embodiments of the invention；
Fig. 2 is the sectional view of the golden finger structure of some embodiments of the invention；
Fig. 3 is the floor map of the golden finger structure of some embodiments of the invention；
Fig. 4 is the floor map of the golden finger structure of some embodiments of the invention；
Fig. 5 is the floor map of the golden finger structure of some embodiments of the invention；
Fig. 6 is the sectional view of the golden finger structure of some embodiments of the invention；With
Fig. 7 is the floor map of the golden finger structure of some embodiments of the invention.
Main element symbol description：
Golden finger structure 100, golden finger body 10, fixing end 11, connection end 12, matrix 13, finger 14, via hole 142,
End 144, the first cover layer 20, the first curve 22, the first enhanced portion 24, the second cover layer 30, the enhancing of the second curve 32, second
Portion 34.
Embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are, based on orientation shown in the drawings or position relationship, to be for only for ease of
The description present invention and simplified description, rather than indicate or imply that the device or element of meaning must have specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, and it is not intended that indicating or implying relative importance or the implicit quantity for indicating indicated technical characteristic.
Thus, " first " is defined, one or more feature can be expressed or be implicitly included to the feature of " second ".
In description of the invention, " multiple " are meant that two or more, unless otherwise specifically defined.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection or can mutually communicate；Can be joined directly together, can also be by between intermediary
Connect connected, can be connection or the interaction relationship of two elements of two element internals.For the ordinary skill of this area
For personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under "
Can directly it be contacted including the first and second features, it is not direct contact but by it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " to include first special
Levy directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " fisrt feature that includes are immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter the part and setting of specific examples are described.Certainly, they are only merely illustrative, and
And purpose does not lie in the limitation present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, between discussed various embodiments itself are not indicated and/or are set
Relation.In addition, the invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Referring to Fig. 1, the golden finger structure 100 of embodiment of the present invention is used for flexible PCB (not shown), golden finger
Structure 100 includes golden finger body 10, the first cover layer 20 and the second cover layer 30.Golden finger body 10 includes the He of fixing end 11
Connection end 12, fixing end 11 is connected with the substrate (not shown) of flexible PCB, and connection end 12 is used to (scheme not with element to be connected
Show) connection.First cover layer 20 is arranged on a surface of fixing end 11, the first cover layer 20 and the corresponding one side of fixing end 11
In the first curve 22.Second cover layer 30 is arranged on the surface opposite with the first cover layer 20 in fixing end 11, and second
Cover layer 30 is in the second curve 32 with the corresponding one side of fixing end 11.
Refer to Fig. 1-3, when the first cover layer 20 and the corresponding one side of fixing end 11 are straight line, the second cover layer 30 with
When the corresponding one side of fixing end 11 is also straight line, if golden finger structure 100 bends under force, folding force is concentrated on
First cover layer 20 and the corresponding edge of fixing end 11, it is corresponding with fixing end 11 that folding force also focuses on the second cover layer 30
Edge, that is to say, that golden finger structure 100 can produce stress concentration in the first cover layer 20 with the corresponding edge of fixing end 11
Phenomenon, the second cover layer 30 can also produce the phenomenon of stress concentration, now, golden finger structure with the corresponding edge of fixing end 11
100 fracture readily along the first cover layer 20 with the corresponding edge of fixing end 11, also readily along the second cover layer 30 with fixing
11 corresponding edges are held to fracture.
When the first cover layer 20 is curve with the corresponding one side of fixing end 11, if golden finger structure 100 is in the effect of power
The first cover layer of lower edge 20 is bent with the corresponding edge of fixing end 11, and the folding force at the trough of the first curve 22 can be along ripple
Paddy spreads folding force at (or transmission), the crest of the first curve 22 to the first cover layer 20 can be along crest to golden finger body
Spread (or transmission) 10 connection end 12, that is to say, that golden finger structure 100 is corresponding with fixing end 11 in the first cover layer 20
The stress concentration that edge is produced is significantly reduced, now, and golden finger structure 100 is difficult along 11 pairs of the first cover layer 20 and fixing end
The edge answered fractures.When the second cover layer 30 is curve with the corresponding one side of fixing end 11, if golden finger structure 100 is in power
Act on the second cover layer of lower edge 30 to bend with the corresponding edge of fixing end 11, the folding force at the trough of the second curve 32 can edge
Trough folding force at (or transmission), the crest of the second curve 32 is spread to the second cover layer 30 can be along crest to golden finger
Spread (or transmission) connection end 12 of body 10, that is to say, that golden finger structure 100 is in 11 pairs of the second cover layer 30 and fixing end
The stress concentration that the edge answered is produced is significantly reduced, and now, golden finger structure 100 is difficult along the second cover layer 30 and fixing end
11 corresponding edges fracture.It should be noted that crest referred to herein and trough are relative to element to be connected (or even
Connect end 12) for, as shown in figure 1, the position of closest element to be connected (or connection end 12) is crest, farthest away from member to be connected
The position of part (or connection end 12) is trough.
The golden finger structure 100 of embodiment of the present invention by setting the first covering respectively in the both sides of golden finger body 10
The cover layer 30 of film 20 and second, the first cover layer 20 and the corresponding edge of fixing end 11 are curved, reduce golden finger structure 100
The stress produced in the first cover layer 20 with the corresponding edge of fixing end 11, the second cover layer 30 and the corresponding edge of fixing end 11
Also it is curved, the stress that golden finger structure 100 is produced in the second cover layer 30 with the corresponding edge of fixing end 11 is reduced, so that
Improve the intensity of golden finger structure 100.
Referring to Fig. 1, the golden finger structure 100 of embodiment of the present invention is used for flexible PCB, golden finger structure 100 is wrapped
Include golden finger body 10, the first cover layer 20 and the second cover layer 30.
The flexible PCB of embodiment of the present invention includes substrate and the golden finger structure 100 with substrate connection.
Referring to Fig. 4, golden finger body 10 includes fixing end 11 and connection end 12, fixing end 11 and substrate connection, connection
End 12 is used to be connected with element to be connected, and element to be connected can include input port, output port, LED light guiding films etc..Connection
The length L1 at end 12 can be 0.1mm-3mm, for example, the length L1 of connection end 12 can be：0.1mm、0.5mm、0.8mm、
Any one in 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 3mm.If even
The too short golden finger structure 100 that can be unfavorable for of length for connecing end 12 is connected with element to be connected, if the oversize easy generation in connection end 12
Larger moment of flexure and cause golden finger structure 100 to fracture.
Fig. 4, Fig. 5 and Fig. 6 are referred to, golden finger body 10 includes base material 13 and multiple fingers 14, and multiple fingers 14 are set
On opposite two sides of base material 13, the finger 14 on the both sides of base material 13 corresponds (position, shape and length difference
Correspondence), multiple fingers 14 on the same side of base material 13 are spaced to be set so that avoid finger 14 from linking together and
Cause short circuit.The substantially rectangular sheet of each finger 14.Each finger 14 offers via hole 142 at connection end 12,
Via hole 142 on the corresponding finger 14 in the both sides of base material 13 is corresponding and interconnected, that is to say, that via hole 142 is successively
Through positioned at the finger 14 of the side of base material 13, base material 13 and the finger 14 positioned at the opposite side of base material 13.Via hole 142 can be in circle
Shape, the finger part at via hole 142 in a ring and outer toroid diameter be more than finger 14 width.Each finger 14 exists
The end 144 of connection end 12 offers connector, connector can semicircular in shape, end 144 can be in semi-circular shape, and semicircular ring
Outer diameter of a circle is more than the width of finger 14.Each finger 14 is in the end 144 of connection end 12 and base material 13 in connection end 12
End is substantially flush and linked together.It is at least one of gold-plated that finger 14 includes copper foil, goldleaf or copper foil surface, makes hand
Referring to 14 has preferable electric conductivity and corrosion resistance.The material of base material 13 include Kapton (PolyimideFilm,
PI)。
Referring to Fig. 4, the first cover layer 20 is arranged on the surface of fixing end 11 1, specifically, the first cover layer 20 is covered
One end of finger 14 on the side of fixing end 11 and one end (the namely end for exposing finger 14 on the side of connection end 12
144), the first cover layer 20 is in the first curve 22 with the corresponding one side of fixing end 11.First curve 22 includes crest and trough, the
One curve 22 can be wave, and the cycle of wave is 0.5mm-20mm, for example, the cycle of wave can be：0.5mm、
It is any in 0.8mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 5mm, 10mm, 15mm, 20mm
One, it is preferred that the cycle of wave is 1.2mm.
Refer to the surface opposite with the first cover layer 20 that Fig. 5-7, the second cover layers 30 are arranged in fixing end 11
On, specifically, the second cover layer 30 also covers one end of the finger 14 on the side of fixing end 11 and exposed on the side of connection end 12
Finger 14 one end (namely end 144), the second cover layer 30 and the corresponding one side of fixing end 11 are in the second curve 32.The
Two curves 32 include crest and trough, and the second curve 32 can be wave, and the cycle of wave is 0.5mm-20mm, for example, ripple
The cycle of unrestrained line can for 0.5mm, 0.8mm, 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 5mm,
Any one in 10mm, 15mm, 20mm, it is preferred that the cycle of wave is 1.2mm.
Specifically, if the cycle of wave is too small (that is the quantity of crest and trough is too many), wave can be with
It is considered as close to straight line, does not just have the effect for reducing stress.The cycle of wave is excessive, then the first curve 22 (or the second curve
32) arcuation is only formed on golden finger structure 100, golden finger structure 100 is readily along the first curve 22 (or the second curve
32) tear.The cycle of wave is influenceed by the cutter for manufacturing (cutting) wave, generally, manufacture wave week
Phase less wave is relatively difficult and cost is also higher.Because golden finger structure 100 generally comprises two or more
The width W1 of finger 14, preferably six fingers 14, and golden finger structure 100 is general between 5mm-6mm, when the week of wave
When phase is 1.2mm, therefore, golden finger structure 100 at least has two crests with trough so that the intensity of golden finger structure 100 is obtained
To increase, and the quantity of crest and trough again will not be too many, will not increase difficulty of processing.
Refer to Fig. 1-3, when the first cover layer 20 and the corresponding one side of fixing end 11 are straight line, the second cover layer 30 with
When the corresponding one side of fixing end 11 is also straight line, if golden finger structure 100 bends under force, folding force is concentrated on
First cover layer 20 and the corresponding edge of fixing end 11, it is corresponding with fixing end 11 that folding force also focuses on the second cover layer 30
Edge, that is to say, that golden finger structure 100 can produce stress concentration in the first cover layer 20 with the corresponding edge of fixing end 11
Phenomenon, the second cover layer 30 can also produce the phenomenon of stress concentration, now, golden finger structure with the corresponding edge of fixing end 11
100 fracture readily along the first cover layer 20 with the corresponding edge of fixing end 11, also readily along the second cover layer 30 with fixing
11 corresponding edges are held to fracture.
When the first cover layer 20 is curve with the corresponding one side of fixing end 11, if golden finger structure 100 is in the effect of power
The first cover layer of lower edge 20 is bent with the corresponding edge of fixing end 11, and the folding force at the trough of the first curve 22 can be along ripple
Paddy spreads folding force at (or transmission), the crest of the first curve 22 to the first cover layer 20 can be along crest to golden finger body
Spread (or transmission) 10 connection end 12, that is to say, that golden finger structure 100 is corresponding with fixing end 11 in the first cover layer 20
The stress concentration that edge is produced is significantly reduced, now, and golden finger structure 100 is difficult along 11 pairs of the first cover layer 20 and fixing end
The edge answered fractures.When the second cover layer 30 is curve with the corresponding one side of fixing end 11, if golden finger structure 100 is in power
Act on the second cover layer of lower edge 30 to bend with the corresponding edge of fixing end 11, the folding force at the trough of the second curve 32 can edge
Trough folding force at (or transmission), the crest of the second curve 32 is spread to the second cover layer 30 can be along crest to golden finger
Spread (or transmission) connection end 12 of body 10, that is to say, that golden finger structure 100 is in 11 pairs of the second cover layer 30 and fixing end
The stress concentration that the edge answered is produced is significantly reduced, and now, golden finger structure 100 is difficult along the second cover layer 30 and fixing end
11 corresponding edges fracture.
The golden finger structure 100 of embodiment of the present invention by setting the first covering respectively in the both sides of golden finger body 10
The cover layer 30 of film 20 and second, the first cover layer 20 and the corresponding edge of fixing end 11 are curved, reduce golden finger structure 100
The stress produced in the first cover layer 20 with the corresponding edge of fixing end 11, the second cover layer 30 and the corresponding edge of fixing end 11
Also it is curved, the stress that golden finger structure 100 is produced in the second cover layer 30 with the corresponding edge of fixing end 11 is reduced, so that
Improve the intensity of golden finger structure 100.
The golden finger structure 100 of embodiment of the present invention also has the advantages that：First, when finger 14 with it is to be connected
When element is connected, the welding material (for example, scolding tin) on finger 14, which can flow into via hole 142, makes welding material and finger 14
Contact area is bigger, so that the connection effect of finger 14 is preferable.Simultaneously turn on hole 142 rounded, and at via hole 142
Finger part in a ring and outer toroid diameter be more than finger 14 width, so as to reduce finger 14 in via hole 142
Place produces stress, and then lifts the intensity of finger 14.
Second, the end 144 of finger 14 sets opening, is open as semi-circular hole, when finger 14 and element to be connected are welded
When, welding material (for example, scolding tin) can be diffused in opening, finger 14 is preferably connected with element to be connected.
In some embodiments, adjacent two finger 14 on the same side of base material 13 of above-mentioned embodiment is led
The position of through hole 142 is different, that is to say, that center being differed apart from D1 to end 144 of two adjacent via holes 142.
The position of the via hole 142 of two adjacent fingers 14 is different, that is to say, that the center of multiple via holes 142 is not with always
On line, due to intensity of the finger 14 on other positions of the intensity at via hole 142 less than finger 14 are offered, it is thus possible to
The line of centres of the golden finger structure 100 along multiple via holes 142 is avoided to fracture.
In other embodiments, in the projection towards the golden finger body 10, the first of above-mentioned embodiment is bent
The crest of the crest of line 22 and the second curve 32 staggers, and the trough of the trough of the first curve 22 and the second curve 32 staggers, so that
The stress that golden finger structure 100 is produced in the first cover layer 20 with the corresponding edge of fixing end 11 can further be reduced, and entered
One step reduces the stress that golden finger structure 100 is produced in the second cover layer 30 with the corresponding edge of fixing end 11, and then avoids gold
Finger structure 100 fractures readily along the first curve 22 with the corresponding edge of fixing end 11, or/and along the second curve 32 and admittedly
The corresponding edge in fixed end 11 fractures.Specifically, ripple of the crest of the first curve 22 in the projection towards the golden finger body 10
Peak can be completely relative in the trough of the projection towards the golden finger body 10 with the trough of the second curve 32；Or, first
The crest of curve 22 is in a part for the crest of the projection towards the golden finger body 10 and the trough of the second curve 32 in court
To the crest correspondence of the projection of the golden finger body 10, the trough of another part and the second curve 32 is towards the golden finger
The trough correspondence of the projection of body 10.
Fig. 1 and Fig. 6 is referred to, it is in some embodiments, above-mentioned in the perspective plane towards the golden finger body 10
The crest of the crest and the second curve 32 of first curve 22 of embodiment staggers, the trough of the first curve 22 and the second curve 32
Trough stagger, and orthographic projection of second cover layer 30 on golden finger body 10 of above-mentioned embodiment is completely covered first and covered
Orthographic projection of the epiphragma 20 on golden finger body 10, so as to further reduce golden finger structure 100 in the first cover layer 20
The stress produced with the corresponding edge of fixing end 11, and further reduce golden finger structure 100 in the second cover layer 30 with fixing
The stress for holding 11 corresponding edges to produce, and then golden finger structure 100 is avoided readily along 11 pairs of the first curve 22 and fixing end
The edge answered fractures, or/and is fractureed along the second curve 32 with the corresponding edge of fixing end 11.Certainly, in other embodiment
In, the second cover layer 30 can be completely covered on golden finger body 10 in orthographic projection of first cover layer 20 on golden finger body 10
Orthographic projection.
In some embodiments, in the projection towards the golden finger body 10, the first of above-mentioned embodiment is bent
The crest of the crest of line 22 and the second curve 32 staggers, and the trough of the trough of the first curve 22 and the second curve 32 staggers, and on
Orthographic projection of the first cover layer 20 of embodiment with the corresponding one side of fixing end 11 on golden finger body 10 is stated, and second covers
Orthographic projection of the epiphragma 30 with the corresponding one side of fixing end 11 on golden finger body 10 is intersected, so as to further reduce golden hand
Refer to the stress that structure 100 is produced in the first cover layer 20 with the corresponding edge of fixing end 11, and further reduce golden finger structure
100 stress produced in the second cover layer 30 with the corresponding edge of fixing end 11, so avoid golden finger structure 100 readily along
First curve 22 fractures with the corresponding edge of fixing end 11, or/and is rolled over along the second curve 32 with the corresponding edge of fixing end 11
It is disconnected.
Referring to Fig. 1, in some embodiments, in the projection towards the golden finger body 10, above-mentioned embodiment party
The crest of the crest and the second curve 32 of first curve 22 of formula staggers, the trough of the trough of the first curve 22 and the second curve 32
Stagger, and the crest of the first curve 22 of above-mentioned embodiment is relative with the trough interval of the second curve 32, the first curve 22
Trough is relative with the peak separation of the second curve 32, so as to further reduce golden finger structure 100 in the first cover layer 20
With the corresponding edge of fixing end 11 produce stress, and produced at the second cover layer 30 and the corresponding edge of fixing end 11 answer
Power, and then avoid golden finger structure 100 from being fractureed readily along the first curve 22 with the corresponding edge of fixing end 11, or/and along
Second curve 32 fractures with the corresponding edge of fixing end 11.Interval herein is relative to be referred to：The crest of first curve 22 is in direction
The projection of the golden finger body 10 is interval phase in the projection towards the golden finger body 10 with the trough of the second curve 32
To.
Referring to Fig. 4, in some embodiments, the first cover layer 20 of above-mentioned embodiment is included from the first curve 22
Two ends along from fixing end 11 to the direction of connection end 12 extend the first enhanced portion 24, the first enhanced portion 24 be located at golden finger sheet
The both sides of the edge of body 10.When golden finger structure 100 bends under force, the first enhanced portion 24 can absorb part
Folding force, so as to enhance the intensity of golden finger structure 100.In some embodiments, the width W2 of the first enhanced portion 24 is big
In or equal to 0.2mm.If the width W2 of the first enhanced portion 24 is less than 0.2mm, can cause that the first enhanced portion 24 can absorb is curved
Roll over power smaller, do not have the effect for the intensity for further enhancing golden finger structure 100.
Referring to Fig. 7, in some embodiments, the second cover layer 30 of above-mentioned embodiment is included from the second curve 32
Two ends along from fixing end 11 to the direction of connection end 12 extend the second enhanced portion 34, the second enhanced portion 34 be located at golden finger sheet
The both sides of the edge of body 10.When golden finger structure 100 bends under force, the second enhanced portion 34 can absorb part
Folding force, so as to enhance the intensity of golden finger structure 100.In some embodiments, the width W3 of the second enhanced portion 34 is big
In or equal to 0.2mm.If the width W3 of the second enhanced portion 34 is less than 0.2mm, can cause that the second enhanced portion 34 can absorb is curved
Roll over power smaller, do not have the effect for the intensity for further enhancing golden finger structure 100.
Referring to Fig. 1, in some embodiments, the first cover layer 20 of above-mentioned embodiment is included from the first curve 22
Two ends along from fixing end 11 to the direction of connection end 12 extend the first enhanced portion 24, the first enhanced portion 24 be located at golden finger sheet
The both sides of the edge of body 10, and the second cover layer 30 of above-mentioned embodiment includes from the two ends of the second curve 32 along from fixing end 11
The second enhanced portion 34 extended to the direction of connection end 12, the second enhanced portion 34 is located at the both sides of the edge of golden finger body 10.When
When golden finger structure 100 bends under force, the first enhanced portion 24 and the second enhanced portion 34 can absorb part
Folding force, so as to further enhancing the intensity of golden finger structure 100.In some embodiments, the width of the first enhanced portion 24
Spend W2 and be more than or equal to 0.2mm, the width W3 of the second enhanced portion 34 is more than or equal to 0.2mm.If the width of the first enhanced portion 24
The W2 and width W3 of the second enhanced portion 34 is less than 0.2mm, and the first enhanced portion 24 and the second enhanced portion 34 can be caused to absorb
Folding force is smaller, then does not have the effect for the intensity for further enhancing golden finger structure 100.
Specifically, embodiment of the present invention can only meet above-mentioned one of embodiment or while meet above-mentioned multiple
Embodiment, that is to say, that the embodiment that said one or multiple embodiments are combined falls within embodiment party of the present invention
The protection domain of formula.
In the description of this specification, reference term " some embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " etc. means with reference to the embodiment party
Formula or specific features, structure, material or the feature of example description are contained at least one embodiment or example of the present invention
In.In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover,
Specific features, structure, material or the feature of description can be in any one or more embodiments or example with suitable
Mode combine.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one described feature.In the description of the invention, " multiple " are meant that at least two, such as two,
Three etc., unless otherwise specifically defined.
Although embodiments of the present invention have been shown and described above, it is to be understood that above-mentioned embodiment is
Exemplary, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be right
Above-mentioned embodiment is changed, changed, replacing and modification, and the scope of the present invention is limited by claim and its equivalent.
Claims (12)
1. a kind of golden finger structure, for flexible PCB, it is characterised in that the golden finger structure includes：
Golden finger body, the golden finger body includes fixing end and connection end, and the fixing end connects with the flexible PCB
Connect, the connection end is used to be connected with element to be connected；
First cover layer, first cover layer is arranged on a surface of the fixing end, first cover layer with it is described
The corresponding one side of fixing end is in the first curve；With
Second cover layer, second cover layer is arranged on the surface opposite with first cover layer in the fixing end
On, second cover layer one side corresponding with the fixing end is in the second curve.
2. golden finger structure according to claim 1, it is characterised in that first curve includes crest and trough, institute
Stating the second curve includes crest and trough, in the projection towards the golden finger body, the crest of first curve and institute
The crest for stating the second curve staggers, and the trough of the trough of first curve and second curve staggers.
3. golden finger structure according to claim 2, it is characterised in that first cover layer is in the golden finger body
On orthographic projection orthographic projection of second cover layer on the golden finger body is completely covered；Or
First cover layer is completely covered in the golden hand in orthographic projection of second cover layer on the golden finger body
Refer to the orthographic projection on body；Or
Orthographic projection of first cover layer one side corresponding with the fixing end on the golden finger body, and described second
Orthographic projection of the cover layer one side corresponding with the fixing end on the golden finger body is intersected；Or
The crest of first curve is relative with the trough interval of second curve, the trough of first curve and described the
The peak separation of two curves is relative.
4. golden finger structure according to claim 1, it is characterised in that the golden finger body includes base material and multiple hands
Refer to, the multiple finger is arranged on opposite two sides of the base material, multiple hands on the base material same side
Refer to spaced set.
5. golden finger structure according to claim 4, it is characterised in that each finger is opened up at the connection end
There is via hole, the position of the via hole of adjacent two finger on the base material same side is different.
6. golden finger structure according to claim 4, it is characterised in that each end of the finger at the connection end
Portion offers semi-circular hole.
7. golden finger structure according to claim 4, it is characterised in that the finger includes copper foil, goldleaf or copper foil table
Face is at least one of gold-plated.
8. golden finger structure according to claim 1, it is characterised in that first cover layer includes bent from described first
The two ends of line are located at institute along the first enhanced portion extended from the fixing end to the direction of the connection end, first enhanced portion
State the both sides of the edge of golden finger body；Or/and
Second cover layer includes from the fixing end to the direction of the connection end prolonging from the two ends edge of second curve
The second enhanced portion stretched, second enhanced portion is located at the both sides of the edge of the golden finger body.
9. golden finger structure according to claim 8, it is characterised in that first enhanced portion or/and second increasing
The width in strong portion is more than or equal to 0.2mm.
10. golden finger structure according to claim 1, it is characterised in that the length of the connection end is 0.1mm-3mm.
11. golden finger structure according to claim 1, it is characterised in that first curve is wave, the wave
Cycle is 0.5mm-20mm；Or/and
Second curve is wave, and the wave period is 0.5mm-20mm.
12. a kind of flexible PCB, it is characterised in that including：
Substrate；With
Golden finger structure described in claim 1-11 any one, the golden finger structure is connected with the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710433374.6A CN107148141A (en) | 2017-06-09 | 2017-06-09 | Golden finger structure and flexible PCB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710433374.6A CN107148141A (en) | 2017-06-09 | 2017-06-09 | Golden finger structure and flexible PCB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107148141A true CN107148141A (en) | 2017-09-08 |
Family
ID=59781098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710433374.6A Pending CN107148141A (en) | 2017-06-09 | 2017-06-09 | Golden finger structure and flexible PCB |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107148141A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110602868A (en) * | 2019-08-16 | 2019-12-20 | 武汉光迅信息技术有限公司 | Flexible circuit board and corresponding optical module |
| TWI722625B (en) * | 2019-10-28 | 2021-03-21 | 健鼎科技股份有限公司 | Gold finger structure and manufacturing method thereof |
| CN113873751A (en) * | 2020-06-30 | 2021-12-31 | 广东美的厨房电器制造有限公司 | Circuit board structure and household appliance |
-
2017
- 2017-06-09 CN CN201710433374.6A patent/CN107148141A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110602868A (en) * | 2019-08-16 | 2019-12-20 | 武汉光迅信息技术有限公司 | Flexible circuit board and corresponding optical module |
| TWI722625B (en) * | 2019-10-28 | 2021-03-21 | 健鼎科技股份有限公司 | Gold finger structure and manufacturing method thereof |
| CN113873751A (en) * | 2020-06-30 | 2021-12-31 | 广东美的厨房电器制造有限公司 | Circuit board structure and household appliance |
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Effective date of registration: 20210224 Address after: 231323 Building 1, precision electronics industrial park, Hangbu Town, Shucheng County, Lu'an City, Anhui Province Applicant after: Anhui jingzhuo optical display technology Co.,Ltd. Address before: 215143 Kangyang Road 233, Huangdi Town, Xiangcheng District, Suzhou City, Jiangsu Province Applicant before: Suzhou OFilm Tech. Co.,Ltd. |
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