CN101790277B - Method for manufacturing PCB (printed circuit board), PCB and device - Google Patents
Method for manufacturing PCB (printed circuit board), PCB and device Download PDFInfo
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- CN101790277B CN101790277B CN2009101355486A CN200910135548A CN101790277B CN 101790277 B CN101790277 B CN 101790277B CN 2009101355486 A CN2009101355486 A CN 2009101355486A CN 200910135548 A CN200910135548 A CN 200910135548A CN 101790277 B CN101790277 B CN 101790277B
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Abstract
The invention discloses a method for manufacturing a PCB (printed circuit board), a PCB and a device. Blind holes are respectively arranged on the two surfaces of the PCB provided by the embodiment of the invention, and are used for pressing in pins of connectors so as to realize opposite pressing of the connectors arranged on the two surfaces of the PCB. The blind holes are adopted to avoid the problem of mutual signal interference due to that two pins with different attributes are located in the same hole when in opposite pressing; namely, the scheme provided by the embodiment of the invention has requirements neither for the attributes of the pins of the connectors nor for the layout of the connectors on the two surfaces of the PCB, thereby not only improving the layout density of the connectors on the PCB, but also creating wide application range.
Description
Technical field
The present invention relates to the printed-board technology field, be specifically related to be used to make method, printed circuit board (PCB) and the device of printed circuit board (PCB).
Background technology
Mid-printed circuit board (PCB) (PCB; Printed Circuit Board) is meant that two sides (upper surface and lower surface) can assemble connector; Can insert the printed circuit board (PCB) that veneer realizes that signal connects, wherein, because the two sides, front and back (upper surface and lower surface) of mid-printed circuit board (PCB) (the following printed circuit board (PCB) that all is called for short) all needs crimp connector; So generally speaking; Before and after the connector on the two sides layout that need stagger, after promptly connector is pressed into from the one side of printed circuit board (PCB), do not have connector again on the relevant position of the another side that printed circuit board (PCB) is corresponding.But along with the printed circuit board (PCB) integrated level is increasingly high; Need the connector of crimping also to become more and more closeer, cabling quantity also becomes explosive increase, and this has just caused connector layout and the cabling space on the printed circuit board (PCB) more and more limited; Therefore; In order to save the space, improve the space availability ratio of printed circuit board (PCB), prior art increases the thickness of printed circuit board (PCB); On printed circuit board (PCB), get through the hole then, utilize through hole that the connector employing on printed circuit board (PCB) two sides is assembled the mode of pressing.Wherein, Through hole refers to the hole from the printed circuit board (PCB) top layer to another top layer; So-called to pressing; Refer to all crimp connectors of printed circuit board (PCB) two sides same position, for the scheme of prior art, the pin that is about to lay respectively at two connectors on printed circuit board (PCB) two sides is pressed in the through hole simultaneously; Referring to Fig. 1,001 among the figure is printed circuit board (PCB), and 002 is the through hole on the printed circuit board (PCB), and 003 is connector, and the two sides of printed panel 001 all has connector 003, and the pin of connector 003 is pressed in the through hole 002 on the printed panel 001.
In research and practice process to prior art, inventor of the present invention finds, because two pins to the connector of pressing are in same through hole; So for the pin of different attribute, need carry out Signal Spacing, promptly need isolate in the centre of through hole in the centre; And this is the comparison difficulty in technologic realization; That is to say, prior art to the pressure scheme, can only be applicable to the connector that pin attribute is identical; Application scenarios very limited (generally be used for grounding shell to pressing, like shielding case).
Summary of the invention
The embodiment of the invention provides a kind of method, printed circuit board (PCB) and device that is used to make printed circuit board (PCB), in the layout density of the connector on improving printed circuit board (PCB), goes for various scenes.
What need explanation is that the said printed circuit board (PCB) of the embodiment of the invention all refers to mid-printed circuit board (PCB).
A kind of printed circuit board (PCB), the two sides of this printed circuit board (PCB) all has blind hole, said blind hole is used to be pressed into the pin of connector, with the connector of realizing being positioned at the printed circuit board (PCB) two sides to pressing.
A kind of PBA printed board arrangement that is assembled with connector comprises any printed circuit board (PCB) that the connector and the embodiment of the invention provide; The two sides of this printed circuit board (PCB) all has blind hole, and said connector has at least a pin to be pressed in the said blind hole, with realize with the connector that is positioned at the printed circuit board (PCB) another side to pressing.
A kind of method that is used to make printed circuit board (PCB) comprises:
The quantity of the pin of the connector of assembling and layout are made two daughter boards and on said daughter board, are got through the hole as required;
In the middle of two daughter boards, add a dividing plate, and be pressed into printed circuit board (PCB), thereby make an end of the through hole on the said daughter board formed blind hole by the dividing plate sealing.
Wherein, printed circuit board (PCB) was not punched in certain layer hole in the middle of blind hole referred to from the top layer of printed circuit board (PCB) to printed circuit board (PCB).And through hole refers to the hole from printed circuit board (PCB) top layer simultaneously to the another side top layer, promptly punches printed circuit board (PCB).
The embodiment of the invention is employed in the two sides of printed circuit board (PCB) and beats blind hole, so that the pin of connector can be pressed in the blind hole, makes the connector that is positioned at the printed circuit board (PCB) two sides can realize pressing.Because what adopt is blind hole; So the pin of two different attributes is not in the same hole when not existing pressure, produces the problem that signal disturbs each other, that is to say it is to adopt the scheme that the embodiment of the invention provided; Attribute and no requirement (NR) to connector pinout; To the also no requirement (NR) of layout of the connector on printed circuit board (PCB) two sides, not only can improve the layout density of the connector on the printed circuit board (PCB), and suitable scene is extensive.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the PBA printed board arrangement that is assembled with connector that provides of prior art;
Fig. 2 is the structural representation of the printed circuit board (PCB) that provides of the embodiment of the invention;
Fig. 3 is the structural representation of the PBA printed board arrangement that is assembled with connector that provides of the embodiment of the invention;
Fig. 4 is another structural representation of the PBA printed board arrangement that is assembled with connector that provides of the embodiment of the invention;
Fig. 5 is the making sketch map of the PBA printed board arrangement that is assembled with connector that provides of the embodiment of the invention;
Fig. 6 is another structural representation of the PBA printed board arrangement that is assembled with connector that provides of the embodiment of the invention;
Fig. 7 is another structural representation of the PBA printed board arrangement that is assembled with connector that provides of the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Embodiment one,
The embodiment of the invention provides a kind of printed circuit board (PCB).The embodiment of the invention also provides the PBA printed board arrangement that is assembled with connector accordingly, and the method that is used to make this printed circuit board (PCB).Below be elaborated respectively.
A kind of printed circuit board (PCB), two sides all have blind hole, and said blind hole is used to be pressed into the pin of connector, with the connector of realizing being positioned at the printed circuit board (PCB) two sides to pressing.
Owing to be used to be pressed into the hole of connector pinout on the printed circuit board (PCB); The crimping hole that is connector is a blind hole; So not only can realize being positioned at the printed circuit board (PCB) two sides connector to pressing, and can realize the Signal Spacing between the connector pinout, saved the arrangement space of printed circuit board (PCB).
Can also have via hole on this printed circuit board (PCB), this via hole is used to realize the connection (conducting) between the connector on printed circuit board (PCB) two sides, such as, can utilize this via hole to couple together through the connector that wiring will be positioned at the printed circuit board (PCB) two sides; That is to say,, when promptly needing signal to connect, just can realize interconnection through via hole if connector need carry out conducting with the connector on opposite.
For example; As shown in Figures 2 and 3, be distributed with several blind holes 102 and via hole 104 on the printed circuit board (PCB) 101, the pin of connector 103 is pressed in the blind hole 102; If connector 103 need be connected with the connector 103 on opposite, then can realize through via hole 104.What need explanation is that so-called via hole and through hole are similar, all are meant the hole (punching printed circuit board (PCB)) from printed circuit board (PCB) top layer simultaneously to the another side top layer; Just through hole is commonly used to the pin of crimp connector; And via hole generally is used for connecting the connector that is positioned at the printed circuit board (PCB) two sides, that is to say, via hole generally is not used in the pin of crimp connector; For example the blind hole on printed circuit board (PCB) two sides utilizes cable to connect through via hole, and promptly via hole can be used for cabling (cable).
Can also have through hole on this printed circuit board (PCB); This through hole is used to be pressed into the pin that need carry out the connector of conducting with the connector on opposite; Like this; The pin that is positioned at the connector on printed circuit board (PCB) two sides just can come direct conducting through shared this through hole, and need not to connect (conducting) through other via hole.
For example; As shown in Figure 4, be distributed with several blind holes 102, via hole 104 and through hole 105 on the printed circuit board (PCB) 101, the pin of connector 103 is pressed in the blind hole 102; If connector 103 need be connected with the connector 103 on opposite; Then can pin be pressed in the through hole 105,, and need not to realize through via hole 104 with a shared through hole 105 direct conductings of pin of the connector 103 on opposite.
This printed circuit board (PCB) can comprise at least two daughter boards and at least one dividing plate; Have through hole on the said daughter board, said daughter board is close to the two sides of dividing plate respectively, thereby makes an end of said through hole formed blind hole by the dividing plate sealing.
For example, suppose that this printed circuit board (PCB) is made up of daughter board 1, daughter board 2 and dividing plate 3, referring to Fig. 5, so, practical implementation can be following, and the method that promptly is used to make this printed circuit board (PCB) can be following:
Step 1, making daughter board 1: the quantity and the layout of the pin of the connector of assembling are got through hole 10 as required on daughter board 1; Make daughter board 2: the quantity and the layout of the pin of the connector of assembling are got through hole 20 as required on daughter board 2; What need explanation is; Make daughter board 1 and do not limit with the order of making daughter board 2, in addition, daughter board is commonly referred to as independently printed circuit board (PCB) A; But because it can be combined into another printed circuit board (PCB) C with other printed circuit board (PCB) B; So will be combined into the printed circuit board (PCB) A of printed circuit board (PCB) C and the daughter board that printed circuit board (PCB) B all is called printed circuit board (PCB) C, for example, daughter board in the present embodiment 1 and daughter board 2 are exactly the daughter board of their printed circuit board (PCB)s 101 of being combined into.
Step 4, the daughter board that is stacked together 1, dividing plate 3 and daughter board 2 are carried out pressing; Form the blank of printed circuit board (PCB) 101; Because daughter board 1 and daughter board 2 are close to the two sides of dividing plate 3 respectively; So the through hole 10 of daughter board 1 and an end of the through hole 20 on the daughter board 2 will receive the obstruct (in other words by the dividing plate sealing) of dividing plate 3, therefore form blind hole 102.Further, when carrying out pressing, need control the height that overflows of resin, this is because the cause that is under pressure, and blind hole 102 places had a little resin and overflowed this moment.
What need explanation is; When carrying out pressing; Through hole on two daughter boards, promptly the through hole on the daughter board 1 10 can be that the plane of symmetry is symmetrical distribution with dividing plate 3 with through hole 20 on the daughter board 2, promptly an end of through hole 10 and through hole 20 respectively with the relative two sides of dividing plate on mutual over against two positions be connected; Certainly; Through hole 10 on the daughter board 1 can be that the plane of symmetry is interspersed with dividing plate 3 also with the through hole 20 on the daughter board 2, even can a part be that the plane of symmetry is symmetrical distribution with dividing plate 3, and another part is that the plane of symmetry is interspersed with dividing plate 3 then.If the through hole 20 on through hole on the daughter board 1 10 and the daughter board 2 is that the plane of symmetry is symmetrical distribution with dividing plate 3, the structure of the printed circuit board (PCB) 101 that then forms after the pressing can be like Fig. 3 and shown in Figure 4; If the through hole 20 on through hole on the daughter board 1 10 and the daughter board 2 is that the plane of symmetry is interspersed with dividing plate 3, the structure of the printed circuit board (PCB) 101 that then forms after the pressing can be as shown in Figure 6; If through hole 20 parts on through hole on the daughter board 1 10 and the daughter board 2 are that the plane of symmetry is symmetrical distribution with dividing plate 3, another part is that the plane of symmetry is interspersed with dividing plate 3 then, and the structure of the printed circuit board (PCB) 101 that then forms after the pressing can be as shown in Figure 7.
After step 5, the process pressing of step 4; The blank of printed circuit board (PCB) 101 forms; Can bore via hole 104 this moment on the blank of this printed circuit board (PCB) 101, perhaps, can also drill through hole 105 (can referring to Fig. 4 and Fig. 7); Electroplate and make operations such as outer plating then, thereby accomplish the making of printed circuit board (PCB) 101.
After this; Just can carry out layout to connector 103 according to the needs of practical application; The pin of connector 103 is pressed in the blind hole 102 and/or through hole 105 of printed circuit board (PCB); Perhaps also can for example, utilize cable to connect through via hole the blind hole on printed circuit board (PCB) two sides through the interconnection between via hole 104 realization blind holes.What need explanation is, the distribution of the blind hole 102 of printed circuit board need adapt with the pin of connector 103, so that the pin of connector 103 can be pressed in the blind hole 102 better, in addition, the quantity of blind hole 102 can be done suitable adjustment according to the needs of practical application.
Certainly; The printed circuit board (PCB) that present embodiment provided can also be used for the assembling that other are similar to the device of connector except assembling the connector, be to be understood that but; If be used for the assembling of other devices; Then the blind hole on the printed circuit board (PCB) is used to be pressed into the pin of said other devices, and scheme is similar to the above embodiments, repeats no more at this.
By on can know that present embodiment is employed in the two sides of printed circuit board (PCB) and beats blind hole so that the pin of connector can be pressed in the blind hole, make the connector be positioned at the printed circuit board (PCB) two sides can realize to pressing; Because what adopt is blind hole; So the pin of two different attributes is not in the same hole when not existing pressure, produces the problem that signal disturbs each other, that is to say it is to adopt the scheme that the embodiment of the invention provided; Attribute and no requirement (NR) to connector pinout; To the also no requirement (NR) of layout of the connector on printed circuit board (PCB) two sides, not only can improve the layout density of the connector on the printed circuit board (PCB), and suitable scene is extensive; Further, this printed circuit board (PCB) can also comprise via hole and/or through hole, thereby the connector that can conveniently be positioned at the printed circuit board (PCB) two sides connects, and makes that the cabling on the printed circuit board (PCB) is more flexible, makes things convenient for the assembling of connector; Further, when boring via hole or through hole, the aligning accuracy of boring there is not too high request, realize comparatively simple.
Embodiment two,
Correspondingly; The embodiment of the invention also provides a kind of PBA printed board arrangement that is assembled with connector; To shown in Figure 7, this PBA printed board arrangement that is assembled with connector can comprise any printed circuit board (PCB) 101 that the connector 103 and the embodiment of the invention provide (specifically can referring to embodiment one) like Fig. 3;
The two sides of said printed circuit board (PCB) 101 all has blind hole 102, and said connector 103 has at least a pin to be pressed in the said blind hole 102, with realize with the connector 103 that is positioned at printed circuit board (PCB) 101 another sides to pressing.Owing to be used to be pressed into the hole of connector pinout on the printed circuit board (PCB); The crimping hole that is connector is a blind hole; So not only can realize being positioned at the printed circuit board (PCB) two sides connector to pressing, and can realize the Signal Spacing between the connector pinout, saved the arrangement space of printed circuit board (PCB).
Extremely shown in Figure 7 like Fig. 3; Can also have via hole 104 on the printed circuit board (PCB) 101; Connector 103 is connected (conducting) through said via hole 104 with the connector 103 that is positioned at printed circuit board (PCB) 101 another sides; Can utilize via hole 104 to carry out signal through wiring with the connector that is positioned at printed circuit board (PCB) 101 another sides 103 such as, connector 103 is connected.
Like Fig. 4 and shown in Figure 7, can also have through hole 105 on the printed circuit board (PCB) 101, when said connector 103 need carry out conducting with the connector 103 on opposite; Can the pin of connector 103 directly be pressed in the through hole 104; That is to say that this moment, connector 103 had at least a pin to be pressed in the through hole 105, like this; The pin that is positioned at the connector 103 on printed circuit board (PCB) 101 two sides just can directly carry out conducting through shared this through hole 105; And need not to connect (conducting) through other via hole 104, thereby saved the trouble of wiring and the space of wiring, help improving the space availability ratio of printed circuit board (PCB).
What need explanation is; The distribution of the blind hole 102 on the printed circuit board (PCB) 101 need adapt with the pin of connector 103; So that the pin of connector 103 can be pressed in the blind hole 102 better, in addition, the quantity of blind hole 102 can be done suitable adjustment according to the needs of practical application.Wherein, connector 103 specifically can comprise and need be pressed into the devices of also assembling through the interference fit realization in the hole of printed circuit board (PCB) 101 such as device, cable or structural member to pin.
By on can know that present embodiment is employed in the two sides of printed circuit board (PCB) and beats blind hole, the pin with connector is pressed in the blind hole then, realize being positioned at the printed circuit board (PCB) two sides connector to pressing; Because what adopt is blind hole, the pin of two different attributes is in the same hole when pressing so do not exist, and produces the problem that signal disturbs each other; That is to say it is to adopt the scheme that the embodiment of the invention provided; To the attribute and the no requirement (NR) of connector pinout,, not only can adopt the pressure mode is assembled connector the also no requirement (NR) of layout of the connector on printed circuit board (PCB) two sides; With the layout density of the connector on the raising printed circuit board (PCB), and suitable scene is extensive; Further, also have via hole and/or through hole on this printed circuit board (PCB), thereby the connector that can conveniently be positioned at the printed circuit board (PCB) two sides connects, and makes that the cabling on the printed circuit board (PCB) is more flexible, makes things convenient for the assembling of connector; Further, when boring via hole or through hole, the aligning accuracy of boring there is not too high request, realize comparatively simple.
More than the method that is used to make printed circuit board (PCB), printed circuit board (PCB) and device that the embodiment of the invention provided have been carried out detailed introduction; Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. a printed circuit board (PCB) is characterized in that, the two sides of printed circuit board (PCB) all has blind hole, and said blind hole is used to be pressed into the pin of connector, with the connector of realizing being positioned at the printed circuit board (PCB) two sides to pressing.
2. printed circuit board (PCB) according to claim 1 is characterized in that, said printed circuit board (PCB) comprises at least two daughter boards and at least one dividing plate;
Have through hole on the said daughter board, said daughter board is close to the two sides of dividing plate respectively, thereby makes an end of said through hole formed blind hole by the dividing plate sealing.
3. printed circuit board (PCB) according to claim 1 and 2 is characterized in that, also has through hole on the said printed circuit board (PCB).
4. printed circuit board (PCB) according to claim 1 and 2; It is characterized in that; Also have via hole on the said printed circuit board (PCB), said via hole is meant the hole from printed circuit board (PCB) top layer simultaneously to the another side top layer, is used to connect the connector that is positioned at the printed circuit board (PCB) two sides.
5. printed circuit board (PCB) according to claim 1 and 2 is characterized in that, the through hole on two daughter boards is that the plane of symmetry is symmetrical distribution with the dividing plate.
6. printed circuit board (PCB) according to claim 1 and 2 is characterized in that, the through hole on two daughter boards is that the plane of symmetry is interspersed with the dividing plate.
7. a PBA printed board arrangement that is assembled with connector is characterized in that, comprises each described printed circuit board (PCB) in connector and the claim 1 to 6;
The two sides of said printed circuit board (PCB) all has blind hole, and said connector has at least a pin to be pressed in the said blind hole, with realize with the connector that is positioned at the printed circuit board (PCB) another side to pressing.
8. the PBA printed board arrangement that is assembled with connector according to claim 7; It is characterized in that; Also have through hole on the said printed circuit board (PCB), when said connector need carry out conducting with the connector on opposite, said connector had at least a pin to be pressed in the said through hole.
9. the PBA printed board arrangement that is assembled with connector according to claim 7; It is characterized in that; Also has via hole on the said printed circuit board (PCB); Connector is connected with the connector that is positioned at the printed circuit board (PCB) another side through said via hole, and said via hole is meant the hole from printed circuit board (PCB) top layer simultaneously to the another side top layer, is used to connect the connector that is positioned at the printed circuit board (PCB) two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101355486A CN101790277B (en) | 2009-04-21 | 2009-04-21 | Method for manufacturing PCB (printed circuit board), PCB and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101355486A CN101790277B (en) | 2009-04-21 | 2009-04-21 | Method for manufacturing PCB (printed circuit board), PCB and device |
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| Publication Number | Publication Date |
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| CN101790277A CN101790277A (en) | 2010-07-28 |
| CN101790277B true CN101790277B (en) | 2012-05-23 |
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| CN2009101355486A Active CN101790277B (en) | 2009-04-21 | 2009-04-21 | Method for manufacturing PCB (printed circuit board), PCB and device |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103260353A (en) * | 2013-04-03 | 2013-08-21 | 深圳市光之谷新材料科技有限公司 | Circuit board |
| CN103753125A (en) * | 2013-12-17 | 2014-04-30 | 中山名创力电子有限公司 | Manufacturing process of electronic welding part made of material poor in welding |
| CN104754886B (en) * | 2013-12-27 | 2019-06-14 | 中兴通讯股份有限公司 | PCB processing method and PCB |
| WO2016127334A1 (en) * | 2015-02-11 | 2016-08-18 | 华为技术有限公司 | Electronic element pin and electronic element |
| CN108156748A (en) * | 2017-12-29 | 2018-06-12 | 加弘科技咨询(上海)有限公司 | Signal wire when printed circuit board double-sided mounts is fanned out to method and printed circuit board |
| CN108882525A (en) * | 2018-08-24 | 2018-11-23 | 郑州云海信息技术有限公司 | A kind of compression bonding method of pcb board and PCB frontback connection device |
| CN111123065B (en) * | 2018-10-30 | 2022-05-10 | 浙江宇视科技有限公司 | Method and device for inspecting printed circuit board wiring |
| CN111988909A (en) * | 2019-05-23 | 2020-11-24 | 辉达公司 | Printed circuit board, layout method thereof and electronic equipment |
| CN110446332A (en) * | 2019-08-23 | 2019-11-12 | 苏州浪潮智能科技有限公司 | Method and apparatus and printed circuit board for designing printed circuit board |
| JP7355613B2 (en) * | 2019-11-18 | 2023-10-03 | アズビル株式会社 | electromagnetic flow meter |
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|---|---|---|---|---|
| US5047896A (en) * | 1988-11-11 | 1991-09-10 | Fela Planungs Ag | Assembly of multi-layer circuit boards secured by plastic rivets |
| CN2617121Y (en) * | 2003-04-25 | 2004-05-19 | 威盛电子股份有限公司 | Multi layer board structure |
| CN101296583A (en) * | 2008-04-24 | 2008-10-29 | 苏州市惠利华电子有限公司 | Method for processing printed circuit board |
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- 2009-04-21 CN CN2009101355486A patent/CN101790277B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5047896A (en) * | 1988-11-11 | 1991-09-10 | Fela Planungs Ag | Assembly of multi-layer circuit boards secured by plastic rivets |
| CN2617121Y (en) * | 2003-04-25 | 2004-05-19 | 威盛电子股份有限公司 | Multi layer board structure |
| CN101296583A (en) * | 2008-04-24 | 2008-10-29 | 苏州市惠利华电子有限公司 | Method for processing printed circuit board |
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| CN101790277A (en) | 2010-07-28 |
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