CN107318222A - A kind of prevention PCB throws reverse PCB Mark points, pcb board card and the method for line - Google Patents
A kind of prevention PCB throws reverse PCB Mark points, pcb board card and the method for line Download PDFInfo
- Publication number
- CN107318222A CN107318222A CN201710741591.1A CN201710741591A CN107318222A CN 107318222 A CN107318222 A CN 107318222A CN 201710741591 A CN201710741591 A CN 201710741591A CN 107318222 A CN107318222 A CN 107318222A
- Authority
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- China
- Prior art keywords
- pcb
- mark points
- board card
- distance
- pcb board
- 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.)
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Classifications
-
- 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
- H05K1/0266—Marks, test patterns or identification means
- H05K1/0269—Marks, test patterns or identification means for visual or optical inspection
-
- 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
Abstract
The reverse PCB Mark points of line are thrown the invention discloses a kind of prevention PCB, position identification point of the PCB Mark points for configuration on pcb board card, the PCB Mark points are configured at certain pair of horns end of pcb board card, that is the upper left corner and the lower right corner or the lower left corner and the upper right corner, and often the PCB Mark points at pair of horns end are differed apart from the distance of pcb board card adjacent short sides.A kind of prevention PCB of the present invention throws the reverse PCB Mark points of line compared with prior art, suitable for all electronic product PCB design, solve because this bad brought maintenance cost, board scrap cost, raising of human cost, it is practical, it is applied widely, it is easy to promote.
Description
Technical field
The present invention relates to printed circuit board field, specifically a kind of prevention PCB throw the reverse PCB Mark points of line,
Pcb board card and method.
Background technology
At present in the PCBA board card such as server, mobile phone field, PCB making will have Mark point identifications.Mark points are to use
Point for positioning when machine is welded, is that PCB is applied to the position identification point on automatic placement machine in board design, is also base
On schedule.The PCB of element pasted on surface with greater need for set mark points because production when, chip mounter be all operating personnel manually or
Person's machine Automatic-searching Mark points are calibrated.However, in terms of being directed to PCB Mark points, all exist always it is such a not
Good problem occurs, and exactly when PCB throws line (put into production line, behind referred to as throw line), PCB Mark points are in design
Sometimes in it is full symmetric, design sometimes not lattice then, it is relatively more in disorder, camera in printing machine probe can not accurately,
Regular recognizes Mark points, so as to cause PCB to throw line reversely, and now will not also be printed machine and precisely recognize, also just lead
Cause PCB printings reverse, cause the bad generation that can not be retrieved.
It is illustrated in fig. 1 shown below, is the full symmetric example schematic of PCB mark points.It can be seen that this board
PCB Mark points have two.First, Mark point are more, and the design quantity of general PCB Mark points is diagonal setting 2,
Or 4.Following board is provided with 8, and so many, waste of resource is taken less than at all.Second, following diagram PCB Mark
Point design is basically identical, completely in symmetry status.Under this design, when PCB throws line, operating personnel can not judge at all
How to be only correct grain direction, just throw or anti-throwing, what outward appearance was just as, can bring greatly tired to operator
Disturb, be at a loss.If PCB throwing lines are reverse, the bad generation such as printing off normal will occur for that printing.
As shown in figure 2 above, by Fig. 1 PCB deliberately reversely 180 degree throw line, reversely after Fig. 2 and Fig. 1 it is essentially the same, from
Seen on Mark points, it is basic in symmetrical.
After PCB throwing lines are reverse, off normal easily occurs for paste solder printing, and printing machine platform can not effectively recognize crawl Mark
Point, so as to will not alarm, causes printing to occur bad, the paste solder printing check machine that can only be held rearward is checked, could be found
Printing is bad.Certainly, it is bad to will flow out if operation is missed, re-packed so as to cause PCBA to put part, cause board whole
Face property is bad, causes board to be scrapped.
From the graph 1, Fig. 2 combination can be seen that when PCB Mark points are nonstandard, and printing machine just can not precisely be known
Mark points are clipped to, so that it is bad to may result in printing off normal etc..
In consideration of it, the present invention proposes that a kind of prevention PCB throws reverse PCB Mark points, pcb board card and the method for line.
The content of the invention
The technical assignment of the present invention is that there is provided a kind of reverse PCB Mark of prevention PCB throwing lines for above weak point
Point, pcb board card and method.
A kind of prevention PCB throws the reverse PCB Mark points of line, and PCB Mark points recognize for the position configured on pcb board card
Point, the PCB Mark points are configured in certain pair of horns end, i.e. upper left corner of pcb board card and the lower right corner or the lower left corner and the upper right corner, and
PCB Mark points per pair of horns end are differed apart from the distance of pcb board card adjacent short sides.
The PCB Mark points are configured with no more than two groups, and every group includes two PCB that configuration is diagonally held in pcb board card
Mark points, that is, the diagonal end of pcb board card for configuring PCB Mark points is each equipped with one or two PCB Mark point.
When the PCB Mark points diagonally held are each equipped with one, the center of circle of PCB Mark points and adjacent pcb board card short side
The distance between difference be not less than 10mm, i.e.,：The distance between adjacent pcb board card short side of circle center distance of two PCB Mark points
Respectively A, B, | A-B | >=10mm.
When the PCB Mark points diagonally held are each equipped with two, wherein the center of circle of the PCB Mark points at one jiao of end with it is adjacent
The distance between pcb board card short side is A, E, E ＞ A；Between the center of circle for the PCB Mark points diagonally held and adjacent pcb board card short side
Distance be B, F, F ＞ B；Difference wherein between A and B, E and F is not less than 10mm, i.e.,：|A-B|≥10mm；|E-F|≥
10mm。
The distance between the center of circle of the PCB Mark points and adjacent long side of pcb board card >=5mm, i.e.,：
When the PCB Mark points diagonally held are each equipped with one, the adjacent pcb board card of circle center distance of two PCB Mark points is long
The distance between side is respectively C, D, C >=5mm, D >=5mm；
When the PCB Mark points diagonally held are each equipped with two, wherein the center of circle of the PCB Mark points at one jiao of end and adjacent PCB
The distance between long side of board is C, G；The distance between the center of circle for the PCB Mark points diagonally held and adjacent long side of pcb board card are
D, H, C >=5mm, D >=5mm, G >=5mm, H >=5mm.
A kind of prevention PCB throws the reverse pcb board card of line, including configures in the PCB Mark points diagonally held, and the diagonal end is
Refer to the upper left corner and the lower right corner or the lower left corner and the upper right corner of pcb board card, and the PCB Mark points per pair of horns end are apart from pcb board
The distance of card adjacent short sides is differed.
The PCB Mark points are configured with no more than two groups, and every group includes two PCB that configuration is diagonally held in pcb board card
Mark points, that is, the diagonal end of pcb board card for configuring PCB Mark points is each equipped with one or two PCB Mark point.
When the PCB Mark points diagonally held are each equipped with one, the center of circle and the adjacent pcb board card of the PCB Mark points
The distance between long side >=5mm, the distance between the center of circle of PCB Mark points and adjacent pcb board card short side difference is not less than
10mm；
When the PCB Mark points diagonally held are each equipped with two, the center of circle of the PCB Mark points and the adjacent long side of pcb board card
The distance between >=5mm, wherein the distance between the center of circle of the PCB Mark points at one jiao of end and adjacent pcb board card short side be A,
E, E ＞ A；The distance between the center of circle for the PCB Mark points diagonally held and adjacent pcb board card short side are B, F, F ＞ B；Wherein A with
Difference between B, E and F is not less than 10mm, i.e.,：|A-B|≥10mm；|E-F|≥10mm.
A kind of prevention PCB throws the reverse method of line, and its implementation process is：
PCB Mark points are configured on pcb board card, the PCB Mark points are position identification point, by the configuration of PCB Mark points in PCB
Certain pair of horns end, i.e. upper left corner of board and the lower right corner or the lower left corner and the upper right corner, and PCB Mark points per pair of horns end away from
From being differed with a distance from pcb board card adjacent short sides；
PCB is covered by stencil printer and throws line situation, according to the PCB Mark points of the different distance of configuration, PCB is determined
Board direction, starts to throw line printing.
The stencil printer come cover PCB throw line detailed process be：Printer parameters are set first, that is, configured just
The distance of the PCB Mark points apart from pcb board card adjacent short sides at every pair of horns end during line direction is really thrown, then pcb board card is carried out
Line is thrown, when pcb board card is thrown inverse time, printing machine sends alarm, stops printing process, after alarm is released, and is further continued for throwing line.
Compared to the prior art a kind of prevention PCB of the present invention throws line reverse PCB Mark points, pcb board card and method,
Have the advantages that：
A kind of prevention PCB of the present invention throws reverse PCB Mark points, pcb board card and the method for line, it is adaptable to all electronic products
PCB design, is solved because this bad brought maintenance cost, board scrap cost, raising of human cost；Not only can be with
Great amount of cost resource has been saved, the output of non-defective unit is also effectively strengthened, so as to add capacity benefit, has brought larger to company
Economic benefit；The effective PCB that solves throws line inverse problem, reduces fraction defective, reduces maintenance, and problem, maximum journey are scrapped in reduction
The protection board of degree, it is practical, it is applied widely, it is easy to promote.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Accompanying drawing 1 is the full symmetric mark example schematic of PCB Mark points.
Accompanying drawing 2 is the reverse 180 degree effect diagram of PCB Mark points.
Accompanying drawing 3 is the specific implementation schematic diagram when PCB Mark points diagonally held are each equipped with one.
Accompanying drawing 4 is the specific implementation schematic diagram when PCB Mark points diagonally held are each equipped with two.
Embodiment
In order that those skilled in the art more fully understand the solution of the present invention, with reference to embodiment to this
Invention is described in further detail.Obviously, described embodiment is only a part of embodiment of the invention, rather than all
Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art institute under the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the invention.
As shown in accompanying drawing 3, Fig. 4, the present invention provides a kind of prevention PCB and throws the reverse PCB Mark points of line, PCB Mark points
To configure the position identification point on pcb board card, the PCB Mark points are configured at certain pair of horns end, the i.e. upper left corner of pcb board card
With the lower right corner or the lower left corner and the upper right corner, and per pair of horns end PCB Mark points it is equal apart from the distance of pcb board card adjacent short sides
Differ.
The PCB Mark points are configured with no more than two groups, and every group includes two PCB that configuration is diagonally held in pcb board card
Mark points, that is, the diagonal end of pcb board card for configuring PCB Mark points is each equipped with one or two PCB Mark point.
When the PCB Mark points diagonally held are each equipped with one, the center of circle of PCB Mark points and adjacent pcb board card short side
The distance between difference be not less than 10mm, i.e.,：The distance between adjacent pcb board card short side of circle center distance of two PCB Mark points
Respectively A, B, | A-B | >=10mm.
When the PCB Mark points diagonally held are each equipped with two, wherein the center of circle of the PCB Mark points at one jiao of end with it is adjacent
The distance between pcb board card short side is A, E, E ＞ A；Between the center of circle for the PCB Mark points diagonally held and adjacent pcb board card short side
Distance be B, F, F ＞ B；Difference wherein between A and B, E and F is not less than 10mm, i.e.,：|A-B|≥10mm；|E-F|≥
10mm。
The distance between the center of circle of the PCB Mark points and adjacent long side of pcb board card >=5mm, i.e.,：
When the PCB Mark points diagonally held are each equipped with one, the adjacent pcb board card of circle center distance of two PCB Mark points is long
The distance between side is respectively C, D, C >=5mm, D >=5mm；
When the PCB Mark points diagonally held are each equipped with two, wherein the center of circle of the PCB Mark points at one jiao of end and adjacent PCB
The distance between long side of board is C, G；The distance between the center of circle for the PCB Mark points diagonally held and adjacent long side of pcb board card are
D, H, C >=5mm, D >=5mm, G >=5mm, H >=5mm.
A kind of prevention PCB throws the reverse pcb board card of line, including configures in the PCB Mark points diagonally held, and the diagonal end is
Refer to the upper left corner and the lower right corner or the lower left corner and the upper right corner of pcb board card, and the PCB Mark points per pair of horns end are apart from pcb board
The distance of card adjacent short sides is differed.
The PCB Mark points are configured with no more than two groups, and every group includes two PCB that configuration is diagonally held in pcb board card
Mark points, that is, the diagonal end of pcb board card for configuring PCB Mark points is each equipped with one or two PCB Mark point.
When the PCB Mark points diagonally held are each equipped with one, the center of circle and the adjacent pcb board card of the PCB Mark points
The distance between long side >=5mm, the distance between the center of circle of PCB Mark points and adjacent pcb board card short side difference is not less than
10mm；
When the PCB Mark points diagonally held are each equipped with two, the center of circle of the PCB Mark points and the adjacent long side of pcb board card
The distance between >=5mm, wherein the distance between the center of circle of the PCB Mark points at one jiao of end and adjacent pcb board card short side be A,
E, E ＞ A；The distance between the center of circle for the PCB Mark points diagonally held and adjacent pcb board card short side are B, F, F ＞ B；Wherein A with
Difference between B, E and F is not less than 10mm, i.e.,：|A-B|≥10mm；|E-F|≥10mm.
A kind of prevention PCB throws the reverse method of line, and its implementation process is：
PCB Mark points are configured on pcb board card, the PCB Mark points are position identification point, by the configuration of PCB Mark points in PCB
Certain pair of horns end, i.e. upper left corner of board and the lower right corner or the lower left corner and the upper right corner, and PCB Mark points per pair of horns end away from
From being differed with a distance from pcb board card adjacent short sides；
PCB is covered by stencil printer and throws line situation, according to the PCB Mark points of the different distance of configuration, PCB is determined
Board direction, starts to throw line printing.
The stencil printer come cover PCB throw line detailed process be：Printer parameters are set first, that is, configured just
The distance of the PCB Mark points apart from pcb board card adjacent short sides at every pair of horns end during line direction is really thrown, then pcb board card is carried out
Line is thrown, when pcb board card is thrown inverse time, printing machine sends alarm, stops printing process, after alarm is released, and is further continued for throwing line.
This method is modified by the design to original PCB Mark points, it is desirable to which amended Mark points are in regulating scope
Within, just can be by printing machine come Cover PCB throwing wire conditions.After printer parameters are set, PCB will be by correct side
To line is thrown, after otherwise PCB is thrown instead, printing machine will alarm at once, and the printing machine for now occurring alarm condition will not carry out reality
Printing, technical staff sounds all clear after system, and line is thrown by correct direction.
To improve this problem, it is necessary to import this invention.This invention core content be：PCB diagonal are at least provided with 1 group
Mark points, but 2 groups can not be more than.The requirement of this group of Mark point is, first, Liang Ge Mark dot center will distance edges of boards exist
More than 5mm, because being that the automatic check machine of back segment to be prevented carries out gripping test to PCB long side, Mark points is covered, so will
More than the 5mm asked；Secondly, the difference on the centre distance PCB short slabs side of two Mark points otherwise less than 10mm, otherwise paste solder printing
Machine can not accurately capture Mark points.
Specification PCB Mark point design methods, it is desirable at least 1 group diagonal Mark point, most two diagonal, 2 groups of Mark
Point.Below figure 3 is designing draft, by taking 1 group of Mark point as an example, concrete mode can be described in detail according to this figure.
Shown in figure 3 above, upper and lower ends rectangle green area is pcb board side, and intermediate region is the regions such as device welding.
Yellow circular dot is PCB Mark points.In order to which specification PCB Mark points are designed, it is desirable to | A-B |≤10mm, C and D Ju Li≤
5mm, such design just can ensure that PCB when line is thrown, can define throwing line direction, operator can be according to fixation
Throwing line direction carry out operation operation.When operator's throwing line is reverse, because printing machine presses this rule setting before
Parameter, PCB throw it is anti-if, the position of diagonal Mark points will be different, now, printing machine precisely can just enter to Mark points
Row identify, printing machine will alert notice operator occur throw anteiso- it is normal.
By embodiment above, the those skilled in the art can readily realize the present invention.Herein
Apply specific case to be set forth the principle and embodiment of the present invention, the explanation of above example is only intended to help
Understand the method and its core concept of the present invention.It should be pointed out that for those skilled in the art, not taking off
On the premise of from the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into this
In invention scope of the claims.
Claims (10)
1. a kind of prevention PCB throws the reverse PCB Mark points of line, it is characterised in that PCB Mark points are configuration on pcb board card
Position identification point, the PCB Mark points configure in certain pair of horns end, i.e. upper left corner of pcb board card and the lower right corner or the lower left corner
Differed apart from the distance of pcb board card adjacent short sides with the PCB Mark points in the upper right corner, and every pair of horns end.
2. a kind of prevention PCB according to claim 1 throws the reverse PCB Mark points of line, it is characterised in that the PCB
Mark points are configured with no more than two groups, and every group includes being arranged respectively at two PCB Mark points that pcb board card is diagonally held, that is, matches somebody with somebody
The diagonal end of pcb board card for putting PCB Mark points is each equipped with one or two PCB Mark point.
3. a kind of prevention PCB according to claim 2 throws the reverse PCB Mark points of line, it is characterised in that when diagonal end
PCB Mark points when being each equipped with one, the distance between the center of circle of PCB Mark points and adjacent pcb board card short side difference are not
Less than 10mm, i.e.,：The distance between adjacent pcb board card short side of circle center distance of two PCB Mark points respectively A, B, | A-B |
≥10mm。
4. a kind of prevention PCB according to claim 2 throws the reverse PCB Mark points of line, it is characterised in that when diagonal end
PCB Mark points when being each equipped with two, wherein between the center of circle of the PCB Mark points at one jiao of end and adjacent pcb board card short side
Distance be A, E, E ＞ A；The distance between the center of circle for the PCB Mark points diagonally held and adjacent pcb board card short side are B, F, F ＞
B；Difference wherein between A and B, E and F is not less than 10mm, i.e.,：|A-B|≥10mm；|E-F|≥10mm.
5. a kind of prevention PCB according to claim 2 throws the reverse PCB Mark points of line, it is characterised in that the PCB
The distance between the center of circle of Mark points and adjacent long side of pcb board card >=5mm, i.e.,：
When the PCB Mark points diagonally held are each equipped with one, the adjacent pcb board card of circle center distance of two PCB Mark points is long
The distance between side is respectively C, D, C >=5mm, D >=5mm；
When the PCB Mark points diagonally held are each equipped with two, wherein the center of circle of the PCB Mark points at one jiao of end and adjacent PCB
The distance between long side of board is C, G；The distance between the center of circle for the PCB Mark points diagonally held and adjacent long side of pcb board card are
D, H, C >=5mm, D >=5mm, G >=5mm, H >=5mm.
6. a kind of prevention PCB throws the reverse pcb board card of line, it is characterised in that including configuring in the PCB Mark points diagonally held, should
Diagonal end refers to the upper left corner and the lower right corner or the lower left corner and the upper right corner of pcb board card, and the PCB Mark points per pair of horns end away from
From being differed with a distance from pcb board card adjacent short sides.
7. a kind of prevention PCB according to claim 6 throws the reverse pcb board card of line, it is characterised in that the PCB Mark
Point is configured with no more than two groups, and every group includes two PCB Mark points that configuration is diagonally held in pcb board card, that is, configures PCB
Diagonally end is each equipped with one or two PCB Mark point to the pcb board card of Mark points.
8. a kind of prevention PCB according to claim 7 throws the reverse pcb board card of line, it is characterised in that when what is diagonally held
When PCB Mark points are each equipped with one, the distance between the center of circle of the PCB Mark points and adjacent long side of pcb board card >=
The distance between the center of circle of 5mm, PCB Mark points and adjacent pcb board card short side difference are not less than 10mm；
When the PCB Mark points diagonally held are each equipped with two, the center of circle of the PCB Mark points and the adjacent long side of pcb board card
The distance between >=5mm, wherein the distance between the center of circle of the PCB Mark points at one jiao of end and adjacent pcb board card short side be A,
E, E ＞ A；The distance between the center of circle for the PCB Mark points diagonally held and adjacent pcb board card short side are B, F, F ＞ B；Wherein A with
Difference between B, E and F is not less than 10mm, i.e.,：|A-B|≥10mm；|E-F|≥10mm.
9. a kind of prevention PCB throws the reverse method of line, it is characterised in that its implementation process is：
PCB Mark points are configured on pcb board card, the PCB Mark points are position identification point, by the configuration of PCB Mark points in PCB
Certain pair of horns end, i.e. upper left corner of board and the lower right corner or the lower left corner and the upper right corner, and PCB Mark points per pair of horns end away from
From being differed with a distance from pcb board card adjacent short sides；
PCB is covered by stencil printer and throws line situation, according to the PCB Mark points of the different distance of configuration, PCB is determined
Board direction, starts to throw line printing.
10. a kind of prevention PCB according to claim 9 throws the reverse method of line, it is characterised in that the stencil printer
Come cover PCB throw line detailed process be：Printer parameters are set first, that is, configure every pair of horns end during good correct throwing line direction
PCB Mark points apart from pcb board card adjacent short sides distance, then to pcb board card carry out throwing line, when pcb board card throw inverse time,
Printing machine sends alarm, stops printing process, after alarm is released, and is further continued for throwing line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710741591.1A CN107318222A (en) | 2017-08-25 | 2017-08-25 | A kind of prevention PCB throws reverse PCB Mark points, pcb board card and the method for line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710741591.1A CN107318222A (en) | 2017-08-25 | 2017-08-25 | A kind of prevention PCB throws reverse PCB Mark points, pcb board card and the method for line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107318222A true CN107318222A (en) | 2017-11-03 |
Family
ID=60176981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710741591.1A Pending CN107318222A (en) | 2017-08-25 | 2017-08-25 | A kind of prevention PCB throws reverse PCB Mark points, pcb board card and the method for line |
Country Status (1)
| Country | Link |
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| CN (1) | CN107318222A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108617094A (en) * | 2018-05-03 | 2018-10-02 | 深圳崇达多层线路板有限公司 | A method of prevent positive and negative drilling dislocation on wiring board from forming stepped hole |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5710063A (en) * | 1996-06-06 | 1998-01-20 | Sun Microsystems, Inc. | Method for improving the alignment of holes with other elements on a printed circuit board |
| CN201781687U (en) * | 2010-08-25 | 2011-03-30 | 比亚迪股份有限公司 | Printed circuit board |
| CN203708617U (en) * | 2013-11-29 | 2014-07-09 | 深圳市凯木金科技有限公司 | Printed circuit board |
| CN205912323U (en) * | 2016-07-28 | 2017-01-25 | 深圳市嘉立创科技发展有限公司 | Printed circuit board |
-
2017
- 2017-08-25 CN CN201710741591.1A patent/CN107318222A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5710063A (en) * | 1996-06-06 | 1998-01-20 | Sun Microsystems, Inc. | Method for improving the alignment of holes with other elements on a printed circuit board |
| CN201781687U (en) * | 2010-08-25 | 2011-03-30 | 比亚迪股份有限公司 | Printed circuit board |
| CN203708617U (en) * | 2013-11-29 | 2014-07-09 | 深圳市凯木金科技有限公司 | Printed circuit board |
| CN205912323U (en) * | 2016-07-28 | 2017-01-25 | 深圳市嘉立创科技发展有限公司 | Printed circuit board |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108617094A (en) * | 2018-05-03 | 2018-10-02 | 深圳崇达多层线路板有限公司 | A method of prevent positive and negative drilling dislocation on wiring board from forming stepped hole |
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