CN108323007A - A kind of printed circuit board splicing construction and its joining method - Google Patents
A kind of printed circuit board splicing construction and its joining method Download PDFInfo
- Publication number
- CN108323007A CN108323007A CN201810083941.4A CN201810083941A CN108323007A CN 108323007 A CN108323007 A CN 108323007A CN 201810083941 A CN201810083941 A CN 201810083941A CN 108323007 A CN108323007 A CN 108323007A
- Authority
- CN
- China
- Prior art keywords
- veneer
- circuit board
- printed circuit
- splicing construction
- degree
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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
- H05K1/14—Structural association of two or more printed circuits
- H05K1/142—Arrangements of planar printed circuit boards in the same plane, e.g. auxiliary printed circuit insert mounted in a main printed circuit
-
- 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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0097—Processing two or more printed circuits simultaneously, e.g. made from a common substrate, or temporarily stacked circuit boards
-
- 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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means
-
- 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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/15—Position of the PCB during processing
- H05K2203/1563—Reversing the PCB
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Structure Of Printed Boards (AREA)
Abstract
A kind of printed circuit board splicing construction and its joining method, belong to circuit board technology field.The splicing construction of the present invention includes at least four pieces of veneers, and polylith veneer is closely spliced into even number line and even column, and every piece of veneer can be obtained by any one piece of veneer adjacent thereto along adjacent edge overturning 180 degree.The joining method of the present invention is polylith veneer to be closely spliced into even number line and even column, and every piece of veneer can be obtained by any one piece of veneer adjacent thereto along adjacent edge overturning 180 degree.The present invention can simply and effectively solve the problems, such as to put back when circuit board patch, to improve the efficiency and quality of circuit board patch.
Description
Technical field
The present invention relates to circuit board technology field more particularly to a kind of printed circuit board splicing constructions and its joining method.
Background technology
Currently, during circuit board patch, the problem of being primarily present two influences working efficiency.The first, in circuit board
When automatic chip mounting, either first the back side is still first pasted in patch front, is both needed to after a face paste is complete, renewal part dispensing, change paster
Program, then other one side is pasted, because the part and optical locating point on circuit board two sides are all different.The second, circuit board enters
When patch track, putting back for circuit board can be led to because of 180 degree rotation or positive and negative overturning, once putting back, will result in
The case where patch is scrapped.
For above-mentioned first problem, there is presently no good solutions.And it is directed to above-mentioned Second Problem,
Existing solution mainly has following two：
1, the word for designing mark " TOP " and " BOTT0M " or " A " and the face " B " on circuit boards, to prevent positive and negative
Put back product.This method needs personnel's operation correct, and the making of program making and jig needs the description with word to keep
Unanimously, i.e., all TOP or BOTTOM cause to malfunction, have no idea to prevent circuit board once any one link is inconsistent
Positive and negative is put back.This method has artificial unreliable factor to exist, and can only prevent a kind of putting back for positive and negative overturning, cannot
Prevent 180 degree rotation completely to put back, there is certain limitation.
2, at negative and positive jigsaw (there is the circuit board in the faces BOTTOM in the existing faces TOP of the same face in a jigsaw) again or just
On the technique edges of jigsaw (the same face in a jigsaw only has the circuit board in the faces TOP or only faces BOTTOM) plus direction sign
Show, to prevent 180 degree rotation from putting back product.It is correct that this method is also required to personnel's operation, the making of program making and jig and
The description of word is consistent, once mistake occurs in any one link, all has no idea to prevent the rotation of 180 degree from putting back.
Above two method will lean on human control in production, and counnter attack is single, bothersome arduously but to prevent to produce completely
The problem of product are put back.
For another example application No. is the patents of CN201020510911.6 to disclose a kind of printed circuit board, the printed wiring board
On be provided at least one veneer, the first surface of each veneer is provided at least two groups optical markings of different shapes
Point, the second surface of the veneer are also equipped with optical markings point identical with first surface at first surface mirror position.
When printed circuit board occur 180 degree rotation put back when, two groups of optical markings points of different shapes can change, equipment can because
It identifies the difference in library and None- identified, 180 degree rotation the technical issues of putting back is efficiently solved from design.
Although above-mentioned solution can be put back by automation equipment to avoid the 180 degree of circuit board from rotating, according to
It is old simultaneously effective to solve the problems, such as that 180 rotations are put back and put back with positive and negative, while optical markings are added on circuit boards
Point can also reduce whole efficiency, and increase production cost.
Invention content
The purpose of the present invention is to solve the above-mentioned problems of the prior art, provide a kind of printed circuit board splicing knot
Structure can simply and effectively solve the problems, such as to put back when circuit board patch, to improve the efficiency and quality of circuit board patch.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of printed circuit board splicing construction, including at least four pieces of veneers, veneer described in polylith are closely spliced into even number line
And even column, every piece of veneer can be obtained by any one piece of veneer adjacent thereto along adjacent edge overturning 180 degree.
Preferably, veneer described in polylith constitutes multiple concatenation units, the concatenation unit includes veneer described in 2*2 blocks.
Preferably, the length of the printed circuit board splicing construction with it is of different size.
Preferably, the long side of the printed circuit board splicing construction has different mark structures from broadside.
Preferably, including posting, veneer described in polylith is set in the posting, long side and the width of the posting
Side has the different mark structures.
Preferably, at least a side of the veneer is equipped with direction structure.
Preferably, the lower side of the veneer is equipped with the direction structure.
Preferably, the direction structure is convex block.
The present invention also provides a kind of printed circuit board joining methods, and polylith veneer is closely spliced into even number line and even number
Row, and every piece of veneer can be obtained by any one piece of veneer adjacent thereto along adjacent edge overturning 180 degree.
Preferably, with veneer described in 2*2 blocks for a concatenation unit, the specific joining method of the concatenation unit is：
Step 1, a side of the first veneer is placed upward；
Step 2, by the second veneer at the position of first veneer, the right edge along first veneer overturns 180
Degree；
Step 3, by third veneer at the position of second veneer, the upper side edge along second veneer overturns 180
Degree；
Step 4, by the 4th veneer at the position of the third veneer, the left side along the third veneer overturns 180
Degree.
It is an advantage of the invention that：No matter 180 degree rotates or positive and negative overturning, all put back without having to worry about circuit board, it can be straight
Tap into row patch.And do not have to renewal part dispensing and patch program after having pasted one side, it is another can circuit board directly to be turned into patch
On one side, the efficiency and quality of circuit board patch are greatly improved.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention 2；
Fig. 3 is the structural schematic diagram of the embodiment of the present invention 3；
Fig. 4 is the structural schematic diagram of the embodiment of the present invention 4；
Fig. 5 is a kind of flow chart of embodiment of the method for the present invention.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment 1
A kind of printed circuit board splicing construction, including at least four pieces of veneers, veneer described in polylith are closely spliced into even number line
And even column, every piece of veneer can be obtained by any one piece of veneer adjacent thereto along adjacent edge overturning 180 degree.
By taking a kind of embodiment of simplest four pieces of veneer splicing structures as an example, and for the ease of every piece of veneer of differentiation
Positive and negative and it is positive stand upside down, and more intuitively illustrate present embodiment, using conventional mark or character " TOP " and " BOTTOM " come
The positive and negative of veneer is indicated respectively, and " TOP " and " BOTTOM " lexicographic order on one piece of veneer is mirror, that is, works as front
When upward, " TOP " is the lexicographic order of T, O, P, then when reverse side upward when, " BOTTOM " is the lexicographic order of M, O, T, T, O, B.
Specifically, as shown in Figure 1, being closely spliced into an entirety by tetra- pieces of veneers of A, B, C, D, wherein veneer A just faces
Upper and upright, that is, the letter seen is upright " TOP "；The face of board B upward is veneer A after its right edge overturns 180 degree
Face upward, that is, the letter seen are upright
“MOTTOB”；The faces of veneer C upward are the face of board B after its upper side edge overturning 180 degree upward, that is, the word seen
Mother is " POT " to stand upside down；The faces of veneer D upward be veneer C along its left side overturn 180 degree after face upward, i.e., it is seen that
" BOTTOM " to stand upside down.Certainly, specific splicing described above is only a kind of mode of the present embodiment, for convenience of description
The design feature of the present embodiment can be overturn by any one piece of veneer adjacent thereto along adjacent edge as long as meeting every piece of veneer
180 degree obtains, and specific splicing is unrestricted.
Due to veneer A by left and right to obtaining veneer C after overturning and upward and downward overturning, therefore veneer A in veneer C at 180 degree
The relationship of rotational symmetry, same board B and veneer D are also at the relationship of 180 degree rotational symmetry, so splicing construction is in integrally center
Symmetrically, i.e., whole by after rotation 180 degree, the composed structure in face upward or constant is put back without having to worry about 180 degree rotation
Problem.Again since veneer A overturning 180 degree can obtain board B, C is obtained after veneer D overturning 180 degrees, then it is whole to be overturn by left and right
After 180 degree, the composed structure in face upward is still constant, similarly, it is whole spun upside down 180 degree after, face upward
Composed structure will not equally change.
To sum up, no matter this splicing construction rotates the either overturning of positive and negative or passes through 180 degree simultaneously and revolve by 180 degree
Turn and positive and negative overturning, all the composed structure in face upward will not be made to change, i.e., without having to worry about circuit board patch when put
Anti- problem.Simultaneously as having pasted the circuit board of one side after reverse side, the composed structure in face upward does not change, therefore can
Directly pass through the part dispensing and patch program progress patch before patch when one side.
Existing counnter attack means mostly need staff that great effort is spent to go management and control, and the anti-of high quality had both been not achieved in this way
Cross-demand, at the same it is time-consuming and laborious；Or increase optical markings on circuit boards, identify optical markings come automatic anti-by equipment
Instead, the cost of increase equipment is not only needed in this way, while the process for increasing optical markings can also reduce whole iron plate efficiency.Separately
Outside, no matter which kind of existing anti-antimode, can not all avoid after having pasted one side renewal part cooperation and patch program, could paste
Another side, and the problem of putting back can be faced after turn-over again, therefore whole patch inefficiency.
And the present invention is then by simply splicing design, it on the one hand can be before without human control or apparatus management/control
It puts, avoids the problem that 180 degree is put back and positive and negative overturning is put back completely, it on the other hand can be after having pasted the one side of circuit board
Directly in addition one side greatly improves the whole efficiency of patch to patch without renewal part dispensing and patch program.
Embodiment 2
Including polylith veneer, veneer described in polylith constitutes multiple concatenation units, and the concatenation unit includes single described in 2*2 blocks
Plate, every piece of veneer can be obtained by any one piece of veneer adjacent thereto along adjacent edge overturning 180 degree.
The specific splicing construction described in concatenation unit, that is, embodiment 1 described in the present embodiment, and according to equipment and
The needs of production can design the splicing construction that the arbitrary concatenation unit is formed, can meet anti-cross-demand.
Specifically, as shown in Fig. 2, the splicing construction being made of two concatenation units, i.e. eight pieces of veneers are spliced
Structure either passes through 180 degree rotation or the overturning of positive and negative, or passes through 180 degree rotation simultaneously and positive and negative turns over
Turn, finally any variation will not occur for the composed structure in face upward, the hidden danger not put back, without in turn-over patch more
Change any part dispensing or patch program.
Embodiment 3
Again as shown in figure 3, the splicing construction being made of three concatenation units, i.e., the knot that 12 pieces of veneers are spliced
Structure equally meets the needs of counnter attack and efficient patch.It is noted that three concatenation units must side by side, that is, be spliced
At two rows four row or four rows two row, and it cannot be spliced into " L " type, because the structure of " L " type is apparently not centrosymmetric.
And it must be " close splicing " to splice, i.e., do not reserve vacancy, the veneer number per a line is identical in other words, the veneer number phase of each row
Together, it or says that the entirety being spliced into must be a rectangle, can just meet the requirements.
Embodiment 4
Again as shown in figure 4, the splicing construction being made of four concatenation units, i.e., the knot that 16 pieces of veneers are spliced
Structure can equally meet the needs of counnter attack and efficient patch.
And so on, as long as the size of equipment can adapt to the size of circuit board, it will be able to design described by arbitrary
The splicing construction that concatenation unit is formed, the i.e. quantity of cell board are 4N (N=1,2,3 ...) block.
Embodiment 5
Counnter attack mentioned above, including 180 degree rotation put back and are put back with positive and negative overturning, but if veneer itself is just
The entirety of rectangular splicing construction in other words is square, then being possible to that the feelings that 90 degree of rotations misplace can occur in patch
Condition.
In order to avoid the generation of the above situation, relatively straightforward way is by the global design of splicing construction into length and width
Different structures is spent, then the patch track of appropriate mix, after circuit board is by 90 degree of rotations, can not just be placed into patch rail
In road, then the case where effectively capable of avoiding misplacing.
But in the actual production process, the size of circuit board is designed come not according to various requirements
It is every piece of circuit board to be sized to adapt to the needs of counnter attack.Therefore it can add outside the splicing construction of polylith veneer
If posting, and posting is designed to length and structure of different size.Simultaneously posting also can locating circuit board well,
And also comply with the procedure calls for first splicing again patch.Patch again takes out veneer after terminating out of posting.
But certain cost and process will certainly be increased by introducing posting, and efficiency to a certain extent is caused to reduce.Therefore
In order to simplify process, cost is reduced, direction structure can be designed on veneer.Specifically, described in being designed in the lower side of veneer
Direction structure, shown direction structure can be designed simply to convex block, as shown in Figs 1-4.By the convex block come distinguish upper and lower sides and
Left and right sides, while be more convenient for the upright of discrimination circuit plate and handstand.The convex block can be on the basis of circuit board Functional Design
On increase, i.e., so that after the completion of patch, will not can be removed, or do not influencing circuit by patch on the described convex block
Under the premise of plate installation needs, retain the convex block.Moreover, in the case where retaining convex block, due to can more intuitively distinguish
The upper and lower side of circuit board is also that the installation of circuit board provides a convenient to a certain extent.
The present invention also provides a kind of printed circuit board joining methods, and polylith veneer is closely spliced into even number line and even number
Row, and every piece of veneer can be obtained by any one piece of veneer adjacent thereto along adjacent edge overturning 180 degree.
Specifically, with veneer described in 2*2 blocks for a concatenation unit, the specific joining method of the concatenation unit is：
Step 1, a side of the first veneer is placed upward；
Step 2, by the second veneer at the position of first veneer, the right edge along first veneer overturns 180
Degree；
Step 3, by third veneer at the position of second veneer, the upper side edge along second veneer overturns 180
Degree；
Step 4, by the 4th veneer at the position of the third veneer, the left side along the third veneer overturns 180
Degree.
Specifically, the joining method of the concatenation unit by tetra- pieces of veneers of A, B, C, D as shown in Figure 1, be closely spliced into one
A entirety, wherein veneer A is face-up and upright, that is, the letter seen is upright " TOP "；The face of board B upward is veneer
Faces of the A after its right edge overturning 180 degree upward, that is, the letter seen is upright " MOTTOB "；The faces of veneer C upward are single
Faces of the plate B after its upper side edge overturning 180 degree upward, that is, the letter seen is " POT " to stand upside down；The faces of veneer D upward are single
Faces of the plate C after its left side overturning 180 degree upward, i.e., it is seen that " BOTTOM " that stands upside down.Certainly, described above specific
Splicing is only a kind of mode of the present embodiment, for convenience of description the design feature of the present embodiment, as long as meeting every piece of list
Plate can be obtained by any one piece of veneer adjacent thereto along adjacent edge overturning 180 degree, and specific splicing is unrestricted
System.
Due to veneer A by left and right to obtaining veneer C after overturning and upward and downward overturning, therefore veneer A in veneer C at 180 degree
The relationship of rotational symmetry, same board B and veneer D are also at the relationship of 180 degree rotational symmetry, so splicing construction is in integrally center
Symmetrically, i.e., whole by after rotation 180 degree, the composed structure in face upward or constant is put back without having to worry about 180 degree rotation
Problem.Again since veneer A overturning 180 degree can obtain board B, C is obtained after veneer D overturning 180 degrees, then it is whole to be overturn by left and right
After 180 degree, the composed structure in face upward is still constant, similarly, it is whole spun upside down 180 degree after, face upward
Composed structure will not equally change.
To sum up, no matter this splicing construction rotates the either overturning of positive and negative or passes through 180 degree simultaneously and revolve by 180 degree
Turn and positive and negative overturning, all the composed structure in face upward will not be made to change, i.e., without having to worry about circuit board patch when put
Anti- problem.Simultaneously as having pasted the circuit board of one side after reverse side, the composed structure in face upward does not change, therefore can
Directly pass through the part dispensing and patch program progress patch before patch when one side.
Existing counnter attack means mostly need staff that great effort is spent to go management and control, and the anti-of high quality had both been not achieved in this way
Cross-demand, at the same it is time-consuming and laborious；Or increase optical markings on circuit boards, identify optical markings come automatic anti-by equipment
Instead, the cost of increase equipment is not only needed in this way, while the process for increasing optical markings can also reduce whole iron plate efficiency.Separately
Outside, no matter which kind of existing anti-antimode, can not all avoid after having pasted one side renewal part cooperation and patch program, could paste
Another side, and the problem of putting back can be faced after turn-over again, therefore whole patch inefficiency.
And the present invention is then by simple joining method, it on the one hand can be before without human control or apparatus management/control
It puts, avoids the problem that 180 degree is put back and positive and negative overturning is put back completely, it on the other hand can be after having pasted the one side of circuit board
Directly in addition one side greatly improves the whole efficiency of patch to patch without renewal part dispensing and patch program.
Certainly, the splicing construction that arbitrary concatenation unit is formed can also be spliced by this method, it is specific to splice
Structure is as shown in Fig. 2, the splicing construction being made of two concatenation units；As shown in figure 3, be made of three concatenation units
Splicing construction；As shown in figure 4, the splicing construction being made of four concatenation units.And so on, it need to only meet the spelling of this method
Connect rule, you can risk the circuit board for meeting anti-cross-demand.
Wherein, when carrying out concatenation using this method, it should be noted that splicing must be " close splicing ", i.e., do not stay
Go out vacancy, the veneer number per a line is identical in other words, and the veneer number of each row is identical, or says that the entirety being spliced into must be one
A rectangle can just be met the requirements.Such as in the splicing construction being made of three concatenation units, three concatenation units must be
Side by side, that is, two rows four row or four rows two row are spliced into, and " L " type cannot be spliced into, because the structure of " L " type is obviously not
It is centrosymmetric, and rectangle can be just centrosymmetric.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. a kind of printed circuit board splicing construction, which is characterized in that including at least four pieces of veneers, veneer closely splices described in polylith
At even number line and even column, every piece of veneer can be obtained by any one piece of veneer adjacent thereto along adjacent edge overturning 180 degree
It arrives.
2. printed circuit board splicing construction according to claim 1, which is characterized in that veneer described in polylith constitutes multiple spellings
Order member, the concatenation unit includes veneer described in 2*2 blocks.
3. printed circuit board splicing construction according to claim 1, which is characterized in that the printed circuit board splicing construction
Length with it is of different size.
4. printed circuit board splicing construction according to claim 1, which is characterized in that the printed circuit board splicing construction
Long side and broadside there is different mark structures.
5. printed circuit board splicing construction according to claim 4, which is characterized in that single described in polylith including posting
Plate is set in the posting, and the long side of the posting has the different mark structures from broadside.
6. printed circuit board splicing construction according to claim 1, which is characterized in that at least a side of the veneer is set
There is direction structure.
7. printed circuit board splicing construction according to claim 6, which is characterized in that the lower side of the veneer is equipped with institute
State direction structure.
8. printed circuit board splicing construction according to claim 7, which is characterized in that the direction structure is convex block.
9. a kind of printed circuit board joining method, which is characterized in that polylith veneer is closely spliced into even number line and even column, and
Every piece of veneer can be obtained by any one piece of veneer adjacent thereto along adjacent edge overturning 180 degree.
10. printed circuit board joining method according to claim 9, which is characterized in that with veneer described in 2*2 blocks for one
The specific joining method of concatenation unit, the concatenation unit is：
Step 1, a side of the first veneer is placed upward；
Step 2, by the second veneer at the position of first veneer, the right edge along first veneer overturns 180 degree；
Step 3, by third veneer at the position of second veneer, the upper side edge along second veneer overturns 180 degree；
Step 4, by the 4th veneer at the position of the third veneer, the left side along the third veneer overturns 180 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810083941.4A CN108323007A (en) | 2018-01-29 | 2018-01-29 | A kind of printed circuit board splicing construction and its joining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810083941.4A CN108323007A (en) | 2018-01-29 | 2018-01-29 | A kind of printed circuit board splicing construction and its joining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108323007A true CN108323007A (en) | 2018-07-24 |
Family
ID=62888096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810083941.4A Pending CN108323007A (en) | 2018-01-29 | 2018-01-29 | A kind of printed circuit board splicing construction and its joining method |
Country Status (1)
| Country | Link |
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| CN (1) | CN108323007A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19633486C1 (en) * | 1996-08-20 | 1998-01-15 | Heraeus Sensor Nite Gmbh | Manufacturing method for circuit board with thin conduction paths and good solderable connection-contact regions e.g for measurement resistor or heating element |
| CN203194015U (en) * | 2013-04-08 | 2013-09-11 | 磊鑫达电子(深圳)有限公司 | PCB (printed circuit board) structure with yin-yang symmetry |
| CN207166863U (en) * | 2017-07-20 | 2018-03-30 | 东莞联桥电子有限公司 | A kind of circuit board of splicing construction |
-
2018
- 2018-01-29 CN CN201810083941.4A patent/CN108323007A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19633486C1 (en) * | 1996-08-20 | 1998-01-15 | Heraeus Sensor Nite Gmbh | Manufacturing method for circuit board with thin conduction paths and good solderable connection-contact regions e.g for measurement resistor or heating element |
| CN203194015U (en) * | 2013-04-08 | 2013-09-11 | 磊鑫达电子(深圳)有限公司 | PCB (printed circuit board) structure with yin-yang symmetry |
| CN207166863U (en) * | 2017-07-20 | 2018-03-30 | 东莞联桥电子有限公司 | A kind of circuit board of splicing construction |
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Application publication date: 20180724 |