CN203661412U - Flexible circuit board in which insertion fingers contain pull tabs - Google Patents
Flexible circuit board in which insertion fingers contain pull tabs Download PDFInfo
- Publication number
- CN203661412U CN203661412U CN201420019114.6U CN201420019114U CN203661412U CN 203661412 U CN203661412 U CN 203661412U CN 201420019114 U CN201420019114 U CN 201420019114U CN 203661412 U CN203661412 U CN 203661412U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- drawstring
- flexible circuit
- region
- flexible pcb
- 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 - Lifetime
Links
- 230000037431 insertion Effects 0.000 title abstract 4
- 238000003780 insertion Methods 0.000 title abstract 4
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 19
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims abstract description 12
- 239000004593 Epoxy Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 description 8
- 230000007812 deficiency Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
Images
Landscapes
- Structure Of Printed Boards (AREA)
Abstract
The utility model relates to a flexible circuit board. The utility model discloses a flexible circuit board in which insertion fingers contain pull tabs. The main body of the flexible circuit board comprises a flexible insulating base material layer, copper layers for covering the upper surface and the lower surface of the flexible insulating base material layer, and covering film layers for covering the upper and lower copper layers separately. The flexible circuit board is characterized in that an insertion finger region is formed at one side position of a first surface of the main body of the flexible circuit board through the bared copper layers which are not coated with the covering film layers, the same position of a second surface of the main body of the flexible circuit board is provided with a pull tab region, the bonding region of the pull tab region is bonded with a finger reinforcing sheet through a glue layer made from epoxy pure glue, the finger reinforcing sheet is formed by vertically connecting a longitudinal bar at the middle portion of a horizontal bar, two outer sides of the connection portion of the longitudinal bar and the horizontal bar are designed into arc-shaped corners, and the circular arc radii of the arc-shaped corners are not less than 1mm. According to the utility model, the structure of the flexible circuit board in which insertion fingers contain pull tabs is improved, so the pull tab strength can be improved.
Description
Technical field
The utility model relates to flexible PCB (FPC), relates in particular to the flexible PCB of splicing fingers containing drawstring.
Background technology
Flexible PCB is that make taking polyimides or polyester film as base material a kind of has excellent flexible printed circuit, be called for short soft board or FPC, have that distribution density is high, lightweight, the feature of thin thickness, be widely used in all kinds of portable electric appts.In some frivolous portable electric appts, splicing fingers extensively adopts containing the flexible PCB of drawstring, is the plug operation while safeguarding for the ease of assembling.The problem that existing splicing fingers mainly exists containing the flexible PCB of drawstring is: A, the cohesive force deficiency in drawstring reinforcement and drawstring region, is prone to fracture or tension intensity and does not reach requirement.B, drawstring reinforcement, glue-free and have the design of glue intersection unreasonable, easily causes turning, junction because first broken by external force.
Utility model content
Therefore, the problems referred to above that exist for solving prior art, the utility model proposes the flexible PCB of a kind of improved splicing fingers containing drawstring, can make the tension intensity of drawstring reinforcement reach use standard.
The utility model adopts following technical scheme to realize:
Splicing fingers is containing the flexible PCB of drawstring, and the main body of flexible PCB comprises: flexible insulation substrate layer, cover the copper layer of flexible insulation substrate layer above and below and cover respectively the covering rete of the copper layer of upper and lower layer.Wherein, a lateral location at the first surface of the main body of this flexible PCB forms splicing fingers region by the exposed copper layer of uncoated covering rete, the same position of second in the main body of this flexible PCB is provided with a drawstring region, the bond regions in drawstring region is the finger reinforcing chip of glue-line bonding by the pure glue of epoxy type, the intermediate vertical that this finger reinforcing chip is a horizontal stripe connects a taeniae, two outsides of this taeniae and horizontal stripe junction are to be designed to circular arc bent angle, and the arc radius of this circular arc bent angle is not less than 1mm.
Further, the arc radius of this circular arc bent angle is 2mm.
Further, this finger reinforcing chip is the reinforcing chip that adopts PI material.
The utility model adopts as above technical scheme, and splicing fingers is structurally carried out to above-mentioned improvement containing the flexible PCB of drawstring, can improve drawstring intensity, with the technological deficiency as stated in the Background Art of avoiding prior art to exist.
Brief description of the drawings
Fig. 1 is the positive structural representation of an embodiment;
Fig. 2 is the structural representation (applying after glue-line) at the back side of this embodiment;
Fig. 3 is the structural representation (attaching after drawstring reinforcing chip) at the back side of this embodiment;
Fig. 4 is the end view of this embodiment;
Fig. 5 is the folded composition of this embodiment.
Embodiment
Now with embodiment, the utility model is further illustrated by reference to the accompanying drawings.
Consulting shown in Fig. 5, is the folded composition that splicing fingers contains the flexible circuit panel products of drawstring; And consult shown in Fig. 1 to Fig. 4, be the specific embodiment form of one of them splicing fingers containing the flexible circuit panel products of drawstring. simultaneouslyThis splicing fingers is similar to conventional flexible PCB containing the main body 1 of the flexible PCB of drawstring, generally comprises: flexible insulation substrate layer 11, cover the copper layer 12 of flexible insulation substrate layer 11 above and below and cover respectively the covering rete (welding resisting layer) 13 of the copper layer 12 of upper and lower layer.In addition, form splicing fingers region 101 in a lateral location of the one side (being assumed to front) of the main body 1 of this flexible PCB by the exposed copper layer 12 of uncoated covering rete (welding resisting layer) 13.In the same position of the another side (being assumed to the back side) of the main body 1 of this flexible PCB, to the back side that should splicing fingers region 101, be provided with a drawstring region 102, thereby the bond regions 1021 in drawstring region 102 is to be bondd one and pointed reinforcing chip 3 and be formed for the drawstring to splicing fingers plug by glue-line 2.
Specifically, consult shown in Fig. 2, the bond regions that is positioned at drawstring region 102 1021 on the back side of the main body 1 of the flexible PCB of this embodiment applies the glue-line 2 of the pure glue of one deck epoxy type, then a finger reinforcing chip 3 is bonded on the glue-line 2 of the pure glue of this epoxy type.The intermediate vertical that this finger reinforcing chip 3 is horizontal stripes 31 connects a taeniae 32, and this taeniae 32 is to be designed to circular arc bent angle with two outsides of horizontal stripe 31 junctions, and the arc radius R of this circular arc bent angle is not less than 1mm, preferably 2mm.Wherein this finger reinforcing chip 3 can adopt the reinforcing chip of PI material.The horizontal stripe 31 of this finger reinforcing chip 3 is corresponding to the bond regions 1021 in drawstring region 102, and the taeniae 32 of this finger reinforcing chip 3 is corresponding to the non-bond regions 1022 in drawstring region 102.The taeniae 32 of this finger reinforcing chip 3 is just in time positioned at the bond regions 1021 in drawstring region 102 and the intersection of non-bond regions 1022 with horizontal stripe 31 junctions, for the stress point place of drawstring, by above-mentioned structural design optimization, can add coercively drawing belt reinforcement glue-free and have the intensity of glue intersection, thereby avoid turning, junction because first broken by external force.In addition, it is to select the pure glue of epoxy type that the bond regions 1021 in this drawstring region 102 applies glue-line 2, compare the conventional oleic series glue system using of PI reinforcement, there is better adhesion strength, thereby avoid the cohesive force deficiency in drawstring reinforcement and drawstring region, occur that fracture or tension intensity do not reach the defect of requirement.
In addition, except the splicing fingers of this embodiment improves drawstring intensity containing the above-mentioned improvement structurally of the flexible PCB of drawstring; In order further to improve drawstring intensity, can also on making technology, carry out some and improve, as: drawstring tension intensity standard is carried out to management and control; Carry out upper limit control in 72 hours to applying the pure glue of the epoxy type transfer time on line of producing; Before PI reinforcement and pure glue laminating, PI surface is washed or cleaning by degreasing or plasma cleaning, to remove contaminated foreign matter in PI reinforcement.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but those skilled in the art should be understood that; not departing from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection range of the present utility model.
Claims (3)
1. splicing fingers is containing the flexible PCB of drawstring, the main body of flexible PCB comprises: flexible insulation substrate layer, cover on flexible insulation substrate layer, copper layer below, and on covering respectively, the covering rete of the copper layer of lower floor, it is characterized in that: the lateral location at the first surface of the main body of this flexible PCB forms splicing fingers region by the exposed copper layer of uncoated covering rete, the same position of second in the main body of this flexible PCB is provided with a drawstring region, the bond regions in drawstring region is the finger reinforcing chip of glue-line bonding by the pure glue of epoxy type, the intermediate vertical that this finger reinforcing chip is a horizontal stripe connects a taeniae, two outsides of this taeniae and horizontal stripe junction are to be designed to circular arc bent angle, the arc radius of this circular arc bent angle is not less than 1mm.
2. splicing fingers according to claim 1, containing the flexible PCB of drawstring, is characterized in that: the arc radius of this circular arc bent angle is 2mm.
3. splicing fingers according to claim 1 and 2, containing the flexible PCB of drawstring, is characterized in that: this finger reinforcing chip is the reinforcing chip that adopts PI material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420019114.6U CN203661412U (en) | 2014-01-14 | 2014-01-14 | Flexible circuit board in which insertion fingers contain pull tabs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420019114.6U CN203661412U (en) | 2014-01-14 | 2014-01-14 | Flexible circuit board in which insertion fingers contain pull tabs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203661412U true CN203661412U (en) | 2014-06-18 |
Family
ID=50927755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420019114.6U Expired - Lifetime CN203661412U (en) | 2014-01-14 | 2014-01-14 | Flexible circuit board in which insertion fingers contain pull tabs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203661412U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105611721A (en) * | 2016-03-15 | 2016-05-25 | 惠州Tcl移动通信有限公司 | Circuit board and electronic device with same |
| WO2018153383A1 (en) * | 2017-02-27 | 2018-08-30 | 深圳市柯达科电子科技有限公司 | Fpc connector, touch screen and liquid crystal screen |
| CN110139471A (en) * | 2019-05-20 | 2019-08-16 | 深圳市华星光电半导体显示技术有限公司 | Flexible printed circuit board |
| CN114286538A (en) * | 2020-09-28 | 2022-04-05 | 鹏鼎控股(深圳)股份有限公司 | Multilayer circuit board with plugging fingers and manufacturing method thereof |
-
2014
- 2014-01-14 CN CN201420019114.6U patent/CN203661412U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105611721A (en) * | 2016-03-15 | 2016-05-25 | 惠州Tcl移动通信有限公司 | Circuit board and electronic device with same |
| WO2018153383A1 (en) * | 2017-02-27 | 2018-08-30 | 深圳市柯达科电子科技有限公司 | Fpc connector, touch screen and liquid crystal screen |
| US10886652B2 (en) | 2017-02-27 | 2021-01-05 | Shenzhen Startek Electronic Technology Co., Ltd. | FPC connector, touch-sensitive screen and LCD screen |
| CN110139471A (en) * | 2019-05-20 | 2019-08-16 | 深圳市华星光电半导体显示技术有限公司 | Flexible printed circuit board |
| CN114286538A (en) * | 2020-09-28 | 2022-04-05 | 鹏鼎控股(深圳)股份有限公司 | Multilayer circuit board with plugging fingers and manufacturing method thereof |
| CN114286538B (en) * | 2020-09-28 | 2024-03-15 | 鹏鼎控股(深圳)股份有限公司 | Multilayer circuit board with inserted fingers and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |