CN203574946U - PCB dot-blocking film - Google Patents
PCB dot-blocking film Download PDFInfo
- Publication number
- CN203574946U CN203574946U CN201320679090.2U CN201320679090U CN203574946U CN 203574946 U CN203574946 U CN 203574946U CN 201320679090 U CN201320679090 U CN 201320679090U CN 203574946 U CN203574946 U CN 203574946U
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- CN
- China
- Prior art keywords
- gong
- pcb
- pcb board
- pad
- hollowed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- General Details Of Gearings (AREA)
- ing And Chemical Polishing (AREA)
- Gears, Cams (AREA)
Abstract
The utility model discloses a PCB dot-blocking film, which is used to provide welding-proof blocking points on the bonding pads and hollowed-out areas of a PCB board. The PCB dot-blocking film comprises a film body, the film body is provided with one or more bonding pad parts corresponding to the positions of bonding pads in the PCB board, and is also provided with one or more hollowed-out parts corresponding to the hollow-out areas in the PCB board; each bonding pad part is provided with a bonding pad oil-blocking block, and each hollowed-out part is provided with a hollowed-out oil-blocking block; the bonding pad part and the bonding pad in the PCB board are in the same size, and the hollowed-out part and the hollowed-out area in the PCB board are in the same size. Because the PCB dot-blocking film is provided with bonding pad parts and hollowed-out parts which are respectively corresponding to the bonding pads and hollowed-out areas in a PCB board and each bonding pad part and hollowed-out part are provided with an oil-blocking block, the printing ink can be effectively blocked from the bonding pads and hollowed-out areas in the PCB board.
Description
Technical field
It is more that the utility model relates to a kind of PCB gear the point film, particularly pad, and the long-pending pcb board large and that gong dummy section is more of the plane of windowing is particularly practical.
Background technology
Anti-welding is one of the flow process of PCB printed substrate, is mainly for the circuit after the etching of protection circuit plate.Anti-weldingly conventionally select ink covering copper upper thread road, thereby it is anti-welding to play insulation, the effect of protection copper cash.Traditional is anti-welding, and on the gear point film, only for NPTH hole (i.e. heavy copper hole), PTH insert hole and part do not need to establish gear oil drop on the VIA hole of consent, and pad locations and gong dummy section do not arrange corresponding gear oil drop.Because PCB pad position is not need to cover ink, if covering ink need be developed out with developer solution in rear operation, gong dummy section, can, by its gong sky, also can cover ink at forming station simultaneously, according to traditional approach, all cover ink, and then it develops out, not only wasted ink, and the consumption of increase developer solution, the waste resources of production.
Utility model content
In view of this, the utility model is for solving the problems of the technologies described above, provide a kind of can effectively avoid anti-welding time ink cover the PCB gear point film of pad and gong dummy section.
The purpose of this utility model realizes by following technical measures:
A kind of PCB gear point film, for pcb board pad and gong dummy section place, provide anti-welding gear point, comprise film main body, described film main body be provided with pcb board on pad position one to one one or more welding disks and with pcb board on gong dummy section one or more gong sky portion one to one, described welding disk is provided with a pad gear oil clot, and described gong sky portion is provided with a gong neutral oil clot; On the size of described welding disk and pcb board, pad is measure-alike, and on the size of described gong sky portion and pcb board, gong dummy section is measure-alike.
Described pad gear oil clot and gong neutral oil clot are the regions of a light-permeable on the film, and on the film, other regions are the shade of light-permeable not.First opened half tone, and be coated with one deck emulsion on the grenadine of half tone, the PCB gear point film is put on half tone, then sends in exposure machine and exposes.Because shadow region has stopped light, inject half tone, on half tone, only have the region that covers of gear oil clot can extinction, and because change of properties occurs extinction.After exposure, enter the aqueous cleaning stage.In this stage, there is the emulsion of change of properties because water insoluble solution retains, other regions are dissolving and the aqueous solution and disappear.With ready-made half tone, remove to print anti-solder ink again, the part of being washed off by the aqueous solution, because not having latex to only have grenadine, during printing ink, can be seeped into pcb board face, be subject to the part after illumination, because solidifying, retain, ink can ooze, plate face prints not curing ink, thereby can effectively stop that ink covers pad and the gong dummy section on pcb board.
The distance of described welding disk outward flange and described pad gear oil clot is more than or equal to 3mil; The distance of described gong sky portion's outward flange and described gong neutral oil clot is more than or equal to 5mil.
The distance of welding disk outward flange and pad gear oil clot is more than or equal to 3mil, and anti-solder ink can cover the outward flange 3mil of pad on pcb board or be greater than the region of 3mil.Pad edge is covered by ink, has avoided direct exposed phenomenon, has promoted on the one hand the aesthetic property of pcb board, and pad copper sheet is retrained by ink on the other hand, has improved the fastness of pad.
In addition, pad gear oil clot compared with the little 3mil of welding disk or above, gong neutral oil clot compared with the little 5mil of gong sky portion or more than.If there is a small amount of deviation during film aligning, due to pad gear oil clot and gong neutral oil clot size less, can reduce the impact that position error causes.
Described pad gear oil clot and gong neutral oil clot can be circle, rectangle, irregular figure.
The beneficial effects of the utility model are:
Described pad gear oil clot and gong neutral oil clot are the regions of a light-permeable on the film, and on the film, other regions are the shade of light-permeable not.First opened half tone, and be coated with one deck emulsion on the grenadine of half tone, the PCB gear point film is put on half tone, then sends in exposure machine and exposes.Because shadow region has stopped light, inject half tone, on half tone, only have the region that covers of gear oil clot can extinction, and because change of properties occurs extinction.After exposure, enter the aqueous cleaning stage.In this stage, there is the emulsion of change of properties because water insoluble solution retains, other regions are dissolving and the aqueous solution and disappear.With ready-made half tone, remove to print anti-solder ink again, the part of being washed off by the aqueous solution, because not having latex to only have grenadine, during printing ink, can be seeped into pcb board face, be subject to the part after illumination, because solidifying, retain, ink can ooze, plate face prints not curing ink, thereby can effectively stop that ink covers pad and the gong dummy section on pcb board.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but embodiment in accompanying drawing does not form any restriction of the present utility model.
Fig. 1 is the structural representation of the PCB gear point film of the present utility model.
Embodiment
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Please refer to Fig. 1, the utility model embodiment 1 comprises:
A kind of PCB gear point film, for pcb board pad and gong dummy section place, provide anti-welding gear point, comprise film main body 1, described film main body 1 be provided with pcb board on pad position one to one one or more welding disks 2 and with pcb board on gong dummy section one or more gong sky portion 3 one to one, described welding disk 2 is provided with a pad gear oil clot 21, and described gong sky portion 3 is provided with a gong neutral oil clot 31; On the size of described welding disk 2 and pcb board, pad is measure-alike, and on the size of described gong sky portion 3 and pcb board, gong dummy section is measure-alike.
Described pad gear oil clot and gong neutral oil clot are the regions of a light-permeable on the film, and on the film, other regions are the shade of light-permeable not.First opened half tone, and be coated with one deck emulsion on the grenadine of half tone, the PCB gear point film is put on half tone, then sends in exposure machine and exposes.Because shadow region has stopped light, inject half tone, on half tone, only have the region that covers of gear oil clot can extinction, and because change of properties occurs extinction.After exposure, enter the aqueous cleaning stage.In this stage, there is the emulsion of change of properties because water insoluble solution retains, other regions are dissolving and the aqueous solution and disappear.With ready-made half tone, remove to print anti-solder ink again, the part of being washed off by the aqueous solution, because not having latex to only have grenadine, during printing ink, can be seeped into pcb board face, be subject to the part after illumination, because solidifying, retain, ink can ooze, plate face prints not curing ink, thereby can effectively stop that ink covers pad and the gong dummy section on pcb board.
The distance of described welding disk 2 outward flanges and described pad gear oil clot 21 equals 3mil; The distance of described gong sky portion's 3 outward flanges and described gong neutral oil clot 31 equals 5mil.
The distance of welding disk outward flange and pad gear oil clot equals 3mil, and anti-solder ink can cover the region of the outward flange 3mil of pad on pcb board.Pad edge is covered by ink, has avoided direct exposed phenomenon, has promoted on the one hand the aesthetic property of pcb board, and pad copper sheet is retrained by ink on the other hand, has improved the fastness of pad.
In addition, pad gear oil clot compared with the little 3mil of welding disk, gong neutral oil clot compared with the little 5mil of gong sky portion.If there is a small amount of deviation during film aligning, due to pad gear oil clot and gong neutral oil clot size less, can reduce the impact that position error causes.
Described pad gear oil clot is circular, and described gong neutral oil clot is irregular figure.
Finally should be noted that; above embodiment illustrates the technical solution of the utility model; but not restriction to the utility model protection range; although the utility model has been done to explain with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not depart from essence and the scope of technical solutions of the utility model.
Claims (4)
1. a PCB keeps off the some film, for pcb board pad and gong dummy section place, provide anti-welding gear point, it is characterized in that: comprise film main body, described film main body be provided with pcb board on pad position one to one one or more welding disks and with pcb board on gong dummy section one or more gong sky portion one to one, described welding disk is provided with a pad gear oil clot, and described gong sky portion is provided with a gong neutral oil clot; On the size of described welding disk and pcb board, pad is measure-alike, and on the size of described gong sky portion and pcb board, gong dummy section is measure-alike.
2. the PCB gear point film according to claim 1, is characterized in that: the distance of described welding disk outward flange and described pad gear oil clot is more than or equal to 3mil.
3. the PCB gear point film according to claim 2, is characterized in that: the distance of described gong sky portion's outward flange and described gong neutral oil clot is more than or equal to 5mil.
4. the PCB gear point film according to claim 3, is characterized in that: described pad gear oil clot and gong neutral oil clot are circle or rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320679090.2U CN203574946U (en) | 2013-10-31 | 2013-10-31 | PCB dot-blocking film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320679090.2U CN203574946U (en) | 2013-10-31 | 2013-10-31 | PCB dot-blocking film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203574946U true CN203574946U (en) | 2014-04-30 |
Family
ID=50542651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320679090.2U Expired - Fee Related CN203574946U (en) | 2013-10-31 | 2013-10-31 | PCB dot-blocking film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203574946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104797088A (en) * | 2015-04-20 | 2015-07-22 | 深圳崇达多层线路板有限公司 | Resistance welding method for windowed rigidity-flexibility combined circuit board |
-
2013
- 2013-10-31 CN CN201320679090.2U patent/CN203574946U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104797088A (en) * | 2015-04-20 | 2015-07-22 | 深圳崇达多层线路板有限公司 | Resistance welding method for windowed rigidity-flexibility combined circuit board |
| CN104797088B (en) * | 2015-04-20 | 2018-01-23 | 深圳崇达多层线路板有限公司 | A kind of rigid-flexible combined circuit board welding resistance method of fenestration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20211031 |