CN106028660B - PCB jigsaw scoreboard methods and structure - Google Patents
PCB jigsaw scoreboard methods and structure Download PDFInfo
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- CN106028660B CN106028660B CN201610560026.0A CN201610560026A CN106028660B CN 106028660 B CN106028660 B CN 106028660B CN 201610560026 A CN201610560026 A CN 201610560026A CN 106028660 B CN106028660 B CN 106028660B
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- annulus
- jigsaw
- pcb
- donut
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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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
- H05K3/0052—Depaneling, i.e. dividing a panel into circuit boards; Working of the edges of circuit boards
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09936—Marks, inscriptions, etc. for information
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- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
Abstract
A kind of PCB jigsaw scoreboard method of present invention proposition and structure.The PCB jigsaw scoreboard methods include the following steps：The PCB jigsaw of bulk is cut into the PCB single board of multiple fritters；Scoreboard label is done on every piece of PCB single board vacancy, scoreboard label represents the production informations such as date of manufacture, production batch and the veneer number of PCB single board；Several donuts are depicted at every piece of PCB single board blank position, one of donut is set as date of manufacture annulus, another donut is set as production batch annulus, another donut is set as jigsaw number annulus, and puts on veneer sign on date of manufacture annulus, production batch annulus, jigsaw number annulus.A kind of PCB jigsaw scoreboard method of invention proposition and structure, the convenient veneer generated to scoreboard distinguish, also allow for carrying out retrospect inquiry to veneer.
Description
Technical field
The present invention relates to pcb board scoreboard technical field, more particularly to a kind of PCB jigsaw scoreboard method and structure.
Background technology
PCB scoreboards are the important processes of the step in high-volume Electronic Assemblies production process.In order to improve printed circuit
(SMT) linear velocity is installed on the yield of plate (PCB) manufacture and surface, and printed circuit board is generally designed to one block of big plate, will be
It is divided into many smaller single PCB platelets in final products using scoreboard machine equipment.This bulk of pcb board can be described as connecting plate or
Jigsaw, this bulk of connecting plate or jigsaw slitting are at fritter among different Product Process, it may be possible to be carried out after SMT
Scoreboard, it is also possible to after the ict, it is also possible to after welding connecting hole SMT, or before final product assembling.But
It is difficult to be distinguished to each veneer in traditional technology, after scoreboard, after some veneer goes wrong, is also not easy to be traced
Inquire reason.
Invention content
Based on this, a kind of PCB jigsaw scoreboard method of present invention proposition and structure, the convenient veneer generated to scoreboard carry out area
Point, it also allows for carrying out retrospect inquiry to veneer.
Its technical solution is as follows：
A kind of PCB jigsaw scoreboard method, includes the following steps：
The PCB jigsaw of bulk is cut into the PCB single board of multiple fritters；
Scoreboard label is done on every piece of PCB single board vacancy, scoreboard label represents the date of manufacture of PCB single board, production
The production informations such as batch and veneer number；Several donuts are depicted at every piece of PCB single board blank position, one of them
Donut is set as date of manufacture annulus, another donut is set as production batch annulus, another donut is set
It is set to jigsaw number annulus, and veneer sign is put on date of manufacture annulus, production batch annulus, jigsaw number annulus.
Its further technical solution is illustrated below：
Further, further include following steps when doing scoreboard label：All donuts are divided into 10 fans with one heart
Shape, and in the corresponding digital annulus of donut periphery setting, the number annulus with digital N to it is each it is concentric it is fan-shaped successively into
Line flag, and veneer sign is put at least one concentric sector of the same donut, the veneer sign position
Specific date of manufacture or production batch or jigsaw number can be represented；Wherein, 0 N, in 1,2,3,4,5,6,7,8,9
One number.
Further, the veneer sign set is marked at concentric sector as copper sheet symbol or via.
Further, several donuts are produced on every piece of PCB single board vacancy, one of donut is set as
Productive year annulus, another donut are set as production cycle annulus, another donut is set as production batch circle
Ring, another donut are set as big jigsaw number annulus, another donut is set as small jigsaw number annulus；
And at least one concentric sector of the productive year annulus is marked with veneer sign, the production cycle annulus
At least one concentric sector is marked with veneer sign, at least one concentric sector of the production batch annulus is marked with veneer mark
Know, at least one concentric sector of the big jigsaw number annulus is marked with veneer sign, the small jigsaw number annulus extremely
A few concentric sector is marked with veneer sign.
Further, the productive year annulus, production cycle annulus, production batch annulus, big jigsaw number annulus, small
Jigsaw number annulus is from inside to outside or ecto-entad sequence is arranged.
In addition, the present invention also proposes a kind of PCB jigsaw scoreboard structure, including the PCB single board that PCB jigsaw scoreboards generate, with
And it is set to the scoreboard label at the PCB single board blank position；
The scoreboard label includes several donuts being imprinted in the PCB single board, and is set to each described
Veneer sign on donut, and one of them described donut be set as date of manufacture annulus, another it is described with one heart
Annulus is set as production batch annulus, another described donut is set as jigsaw number annulus.
Further, all donuts include 10 concentric sector regions, and the donut periphery setting corresponds to
Digital annulus, it is described number annulus be disposed with 10 number N with each the concentric sector it is corresponding, and it is same described in
It is provided with the veneer sign at least one concentric sector of donut；Wherein, 0 N, 1,2,3,4,5,6,7,8,
A number in 9.
Further, the veneer sign is the copper sheet symbol or via being set in the concentric sector.
Further, every piece of PCB single board is included in several donuts of blank space setting, one of institute
It states donut and is set as productive year annulus, another described donut is set as production cycle annulus, described in another
Donut is set as production batch annulus, another described donut is set as big jigsaw number annulus, described in another
Donut is set as small jigsaw number annulus；
And at least one concentric sector of the productive year annulus is marked with veneer sign, production cycle circle
At least one concentric sector of ring be marked with the veneer sign, the production batch annulus it is at least one it is described with one heart
Sector is marked with the veneer sign, at least one concentric sector of the big jigsaw number annulus is marked with the veneer
Mark, at least one concentric sector of the small jigsaw number annulus are marked with the veneer sign.
Further, the productive year annulus, production cycle annulus, production batch annulus, big jigsaw number annulus, small
Jigsaw number annulus is from inside to outside or ecto-entad sequence is arranged.
The present invention has following advantageous effect outstanding：By the concentric circles that fan-shaped composition with one heart is arranged in PCB single board
Ring, and veneer sign is set in concentric sector, it, can be to the production of every piece of PCB single board to form unique scoreboard label
The information such as date, production batch and jigsaw number are recorded, convenient for being distinguished to each PCB single board；Moreover, working as some
PCB single board when something goes wrong, also allows for tracing the source of problem by the information in PCB single board.
Description of the drawings
Fig. 1 is the step schematic block diagram of the scoreboard methods of PCB jigsaw described in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the scoreboard label of the scoreboard structures of PCB jigsaw described in the embodiment of the present invention；
Fig. 3 is the knot of the scoreboard label (when indicating veneer sign) of the scoreboard structures of PCB jigsaw described in the embodiment of the present invention
Structure schematic diagram.
Reference sign：
100- scoreboards mark, 110- productive year annulus, and 120- produces cycle annulus, 130- production batch annulus, 140-
Big jigsaw number annulus, the small jigsaw number annulus of 150-, 160- number annulus, 200- veneer signs.
Specific implementation mode
The embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, the present invention proposes a kind of PCB jigsaw scoreboard method, include the following steps：
S100, the PCB single board that the PCB jigsaw of bulk is cut into multiple fritters；
S200, do scoreboard label on every piece of PCB single board vacancy, the scoreboard label represent PCB single board date of manufacture,
The production informations such as production batch and veneer number；Several donuts are depicted at every piece of PCB single board blank position, wherein
One donut is set as date of manufacture annulus, another donut is set as production batch annulus, another concentric circles
Ring is set as jigsaw number annulus, and puts on veneer mark on date of manufacture annulus, production batch annulus, jigsaw number annulus
Know.
Moreover, further including following steps when doing scoreboard label as shown in Figure 2 to Figure 3：All donuts are divided equally
It is fan-shaped with one heart at 10, and in the corresponding digital annulus 160 of donut periphery setting, digital annulus 160 is with digital N to each
Sector is marked successively with one heart, and puts on veneer sign 200 at least one concentric sector of the same donut, should
200 position of veneer sign can represent specific date of manufacture or production batch or jigsaw number；Wherein, 0 N, 1,
A number in 2,3,4,5,6,7,8,9.Moreover, marking the veneer sign 200 set at concentric sector as copper sheet symbol or mistake
Hole.Copper sheet symbol or via are put in concentric sector, and position is set according to specific mark, indicate different information.For example,
When veneer sign mark is set on the date of manufacture annulus for indicating the date of manufacture, indicate that record is production date information, and work as
It is fan-shaped with one heart where veneer sign when veneer sign is specifically located in some or multiple concentric sectors of date of manufacture annulus
Corresponding digital N combines, and has meant that the specific date of manufacture；Similarly, veneer sign mark, which is set to, indicates production batch
Production batch annulus on when, indicate that record is production lot information, and when veneer sign is specifically located at production batch
When in some or multiple concentric sectors of annulus, the digital N where veneer sign with one heart corresponding to sector combines, with regard to table
Specific production batch is shown；Similarly, when veneer sign mark is set on the jigsaw number annulus for indicating jigsaw number, record is indicated
Be jigsaw number information, and when veneer sign be specifically located at jigsaw number annulus some or it is multiple it is concentric sector on
When, the digital N where veneer sign with one heart corresponding to sector combines, and has meant that specific jigsaw number.
Further, as shown in Fig. 2, producing several donuts on every piece of PCB single board vacancy, one of them is with one heart
Annulus is set as productive year annulus 110, another donut is set as production cycle annulus 120, another donut
It is set as production batch annulus 130, another donut is set as big jigsaw number annulus 140, another donut is set
It is set to small jigsaw number annulus 150；As shown in figure 3, and at least one concentric sector of the productive year annulus 110 be marked with
Veneer sign 200, at least one concentric sector for producing cycle annulus 120 are marked with veneer sign 200, the production batch
At least one concentric sector of secondary annulus 130 be marked with veneer sign 200, the big jigsaw number annulus 140 it is at least one
Sector is marked with veneer sign 200, at least one concentric sector of the small jigsaw number annulus 150 is marked with veneer mark with one heart
Know 200.
By the above content it is found that when the mark of veneer sign 200 is set on the productive year annulus 110 for indicating the productive year,
Indicate record be production year information, and when veneer sign 200 be specifically located at productive year annulus 110 some or
When in multiple concentric sectors, the digital N corresponding to concentric sector where veneer sign 200 combines, and has meant that specific
Productive year.For example, when the productive year is 16 years, just veneer sign 200 is put in the corresponding concentric sector of number 1 and 6；
Similarly, when the mark of veneer sign 200 is set on the production cycle annulus 120 for indicating the productive year, indicate that record is production week
Secondary information, and when veneer sign 200 is specifically located in some or multiple concentric sectors of production cycle annulus 120,
Digital N corresponding to concentric sector where veneer sign 200 combines, and has meant that specific production cycle.For example, when life
When production cycle is the 19th week, just veneer sign 200 is put in the corresponding concentric sector of number 1 and 9；Similarly, work as veneer sign
When 200 marks are set on the production batch annulus 130 for indicating production batch, indicate that record is production lot information, and when single
When panel sign 200 is specifically located in some or multiple concentric sectors of production batch annulus 130, where veneer sign 200
The digital N corresponding to sector combines with one heart, has meant that specific production batch.For example, when production batch is the 5th batch
When, just veneer sign is put in the corresponding concentric sector of number 2；Similarly, the mark of veneer sign 200, which is set to, indicates big jigsaw number
Big jigsaw number annulus 140 on when, indicate record be big jigsaw number information, and when veneer sign 200 specifically be arranged
When in some or multiple concentric sectors of big jigsaw number annulus 140, where veneer sign 200 with one heart corresponding to sector
Digital N combines, and has meant that specific big jigsaw number.For example, when big jigsaw number is the 8th, just 8 pairs digital
Veneer sign 200 is put in the concentric sector answered；Similarly, the mark of veneer sign 200 is set to the small jigsaw for indicating small jigsaw number
When on number annulus 150, indicate that record is small jigsaw number information, and when veneer sign 200 is specifically located at small jigsaw
When in some or multiple concentric sectors of number annulus 150, the digital N combinations corresponding to sector with one heart where veneer sign 200
Get up, has meant that specific small jigsaw number.For example, when small jigsaw number is the 4th, it is just corresponding with one heart in number 4
Veneer sign 200 is put in sector.In conjunction with above- mentioned information, marked by the scoreboard in PCB single board it may determine that the PCB single board is
The 4th small jigsaw scoreboard in the 8th big jigsaw of 5th batch of production in the 19th week 16 years.
In addition, in order to further distinguish the start-stop sequence of the veneer sign 200 in the concentric sector on donut, i.e.,
Initial number is represented in order to distinguish the veneer sign 200 in which concentric sector, the veneer sign in which concentric sector
200 represent termination number, a veneer sign 200 can be arranged in the concentric sector for representing initial number, and under representative
Two veneer signs 200 are set in one digital concentric sector, and so on, it represents and is arranged in the concentric sector for terminate number
Veneer sign 200 it is most, so as to which the built-up sequence of number is indicated clear.For example, when big jigsaw number is the 23rd
When, a veneer sign 200 just is put in the corresponding concentric sector of number 2, and put in the corresponding concentric sector of number 3
Two veneer signs 200.
In addition, the productive year annulus 110, production cycle annulus 120, production batch annulus 130, big jigsaw number circle
Ring 140, small jigsaw number annulus 150 are from inside to outside or ecto-entad sequence is arranged.In this way, the production information of the PCB single board
It can be followed with regard to rule, by checking that the veneer sign that the concentric fan-shaped subscript of donut is set can quickly and easily learn the PCB
The specifying information of veneer.In addition, according to actual conditions, donut quantity can be increased and decreased, to indicate more information
Or less information.
In addition, the present invention also proposes a kind of PCB jigsaw scoreboard structure, including the PCB single board that PCB jigsaw scoreboards generate, with
And it is set to the scoreboard label 100 at the PCB single board blank position；The scoreboard label 100 is mono- including being imprinted at the PCB
Several donuts on plate, and the veneer sign 200 that is set on each donut, and one of them is described same
Heart annulus is set as date of manufacture annulus, another described donut is set as production batch annulus, another is described with one heart
Annulus is set as jigsaw number annulus.
Moreover, all donuts include 10 concentric sector regions, corresponding number is arranged in the donut periphery
Word annulus 160, it is corresponding with each concentric sector that the number annulus 160 is disposed with 10 number N, and the same institute
It states and is provided with the veneer sign at least one concentric sector of donut；Wherein, 0 N, 1,2,3,4,5,6,7,
A number in 8,9.In addition, the veneer sign 200 is the copper sheet symbol or via being set in the concentric sector.
In addition, every piece of PCB single board is included in several donuts of blank space setting, one of them is described same
Heart annulus is set as productive year annulus 110, another described donut is set as production cycle annulus 120, another institute
It states donut and is set as production batch annulus 130, another described donut is set as big jigsaw number annulus 140, separately
One donut is set as small jigsaw number annulus 150；And the productive year annulus 110 is at least one described same
Heart sector is marked with veneer sign 200, at least one concentric sector of the production cycle annulus 120 is marked with the list
Panel sign 200, the production batch annulus 130 at least one concentric sector be marked with the veneer sign 200, described
At least one concentric sector of big jigsaw number annulus 140 is marked with the veneer sign 200, the small jigsaw number circle
At least one concentric sector of ring 150 is marked with the veneer sign 200.It can be with by the veneer sign on each annulus
Know the production informations such as productive year, production cycle, production batch, big jigsaw number, the small jigsaw number of the PCB single board.
In addition, the productive year annulus 110, production cycle annulus 120, production batch annulus 130, big jigsaw number circle
Ring 140, small jigsaw number annulus 150 are from inside to outside or ecto-entad sequence is arranged.Also, the difference of the same donut
The veneer sign 200 being arranged in sector with one heart is different, digital representated by the veneer sign 200 in the concentric sector for distinguishing
Sequentially, go out correct production information data convenient for normal combination.
PCB jigsaw scoreboard method and structure proposed by the present invention, by the way that the same of concentric fan-shaped composition is arranged in PCB single board
Heart annulus, and veneer sign is arranged in concentric sector can be to every piece of PCB single board to form unique scoreboard label
The information such as date of manufacture, production batch and jigsaw number are recorded, convenient for being distinguished to each PCB single board；Moreover, working as certain
One PCB single board when something goes wrong, also allows for tracing the source of problem by the information in PCB single board.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of PCB jigsaw scoreboard method, which is characterized in that include the following steps：
The PCB jigsaw of bulk is cut into the PCB single board of multiple fritters；
Scoreboard label is done on every piece of PCB single board vacancy, which marks date of manufacture, the production batch for representing PCB single board
And the production informations such as veneer number；Several donuts are depicted at every piece of PCB single board blank position, one of them is with one heart
Annulus is set as date of manufacture annulus, another donut is set as production batch annulus, another donut is set as
Jigsaw number annulus, and put on veneer sign on date of manufacture annulus, production batch annulus, jigsaw number annulus；It will be described
Donut is divided into concentric sector, and veneer sign is set in the concentric sector.
2. PCB jigsaw scoreboard method according to claim 1, which is characterized in that further include as follows when doing scoreboard label
Step：All donuts are divided into 10 sectors with one heart, and in the corresponding digital annulus of donut periphery setting, the number
Word annulus is marked each concentric sector with digital N successively, and at least one concentric sector of the same donut
Place puts on veneer sign, which can represent specific date of manufacture or production batch or jigsaw
Number；Wherein, 0 N, a number in 1,2,3,4,5,6,7,8,9.
3. PCB jigsaw scoreboard method according to claim 2, which is characterized in that mark the veneer mark set at concentric sector
Know is copper sheet symbol or via.
4. PCB jigsaw scoreboard method according to claim 2, which is characterized in that produced on every piece of PCB single board vacancy
Several donuts, one of donut are set as productive year annulus, another donut is set as production cycle
Annulus, another donut are set as production batch annulus, another donut is set as big jigsaw number annulus, another
A donut is set as small jigsaw number annulus；
And at least one concentric sector of the productive year annulus is marked with veneer sign, the production cycle annulus at least
One concentric sector is marked with veneer sign, at least one concentric sector of the production batch annulus is marked with veneer sign,
At least one concentric sector of the big jigsaw number annulus be marked with veneer sign, the small jigsaw number annulus at least one
A concentric sector is marked with veneer sign.
5. PCB jigsaw scoreboard method according to claim 4, which is characterized in that the productive year annulus, production cycle
Annulus, production batch annulus, big jigsaw number annulus, small jigsaw number annulus are from inside to outside or ecto-entad sequence is arranged.
6. a kind of PCB jigsaw scoreboard structure, which is characterized in that including the PCB single board that PCB jigsaw scoreboards generate, and be set to
Scoreboard label at the PCB single board blank position；
The scoreboard label includes several donuts being imprinted in the PCB single board, and is set to each described concentric
Veneer sign on annulus, and one of them described donut is set as date of manufacture annulus, another described donut
It is set as production batch annulus, another described donut is set as jigsaw number annulus；The donut is divided into together
The heart is fan-shaped, and veneer sign is set in the concentric sector.
7. PCB jigsaw scoreboard structure according to claim 6, which is characterized in that all donuts include 10 same
Corresponding digital annulus is arranged in heart sector region, the donut periphery, and the number annulus is disposed with 10 number N
It is corresponding with each concentric sector, and be provided at least one concentric sector of the same donut described
Veneer sign；Wherein, 0 N, a number in 1,2,3,4,5,6,7,8,9.
8. PCB jigsaw scoreboard structure according to claim 7, which is characterized in that the veneer sign is described to be set to
Copper sheet symbol or via in sector with one heart.
9. PCB jigsaw scoreboard structure according to claim 7, which is characterized in that every piece of PCB single board is included in blank
Locate several donuts of setting, one of them described donut is set as productive year annulus, another is described same
Heart annulus is set as production cycle annulus, another described donut is set as production batch annulus, another is described with one heart
Annulus is set as big jigsaw number annulus, another described donut is set as small jigsaw number annulus；
And at least one concentric sector of the productive year annulus is marked with veneer sign, the production cycle annulus
At least one concentric sector is marked at least one concentric sector of the veneer sign, the production batch annulus
It is marked with the veneer sign, at least one concentric sector of the big jigsaw number annulus is marked with the veneer mark
Know, at least one concentric sector of the small jigsaw number annulus is marked with the veneer sign.
10. PCB jigsaw scoreboard structure according to claim 9, which is characterized in that the productive year annulus, production week
Secondary annulus, production batch annulus, big jigsaw number annulus, small jigsaw number annulus are from inside to outside or ecto-entad sequence is set
It sets.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610560026.0A CN106028660B (en) | 2016-07-12 | 2016-07-12 | PCB jigsaw scoreboard methods and structure |
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|---|---|---|---|
| CN201610560026.0A CN106028660B (en) | 2016-07-12 | 2016-07-12 | PCB jigsaw scoreboard methods and structure |
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| Publication Number | Publication Date |
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| CN106028660A CN106028660A (en) | 2016-10-12 |
| CN106028660B true CN106028660B (en) | 2018-09-14 |
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| CN111031685B (en) * | 2019-12-25 | 2022-06-21 | 深圳市景旺电子股份有限公司 | Manufacturing method of high-frequency antenna PCB |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204087691U (en) * | 2014-09-02 | 2015-01-07 | 南阳淅减汽车减振器有限公司 | A kind of date of manufacture and production batch mark template |
| CN104573137A (en) * | 2015-01-04 | 2015-04-29 | 东莞市威力固电路板设备有限公司 | PCB process monitoring method |
| CN204948497U (en) * | 2015-07-10 | 2016-01-06 | 天地融科技股份有限公司 | A kind of PCB assembly, electronic equipment and metal character recognition system |
-
2016
- 2016-07-12 CN CN201610560026.0A patent/CN106028660B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204087691U (en) * | 2014-09-02 | 2015-01-07 | 南阳淅减汽车减振器有限公司 | A kind of date of manufacture and production batch mark template |
| CN104573137A (en) * | 2015-01-04 | 2015-04-29 | 东莞市威力固电路板设备有限公司 | PCB process monitoring method |
| CN204948497U (en) * | 2015-07-10 | 2016-01-06 | 天地融科技股份有限公司 | A kind of PCB assembly, electronic equipment and metal character recognition system |
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