CN106061128A - Printed circuit board and method of coating white oil on surface - Google Patents
Printed circuit board and method of coating white oil on surface Download PDFInfo
- Publication number
- CN106061128A CN106061128A CN201610645513.7A CN201610645513A CN106061128A CN 106061128 A CN106061128 A CN 106061128A CN 201610645513 A CN201610645513 A CN 201610645513A CN 106061128 A CN106061128 A CN 106061128A
- Authority
- CN
- China
- Prior art keywords
- circuit board
- printed circuit
- white oil
- oil
- board surface
- 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.)
- Pending
Links
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
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
-
- 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
- H05K2203/05—Patterning and lithography; Masks; Details of resist
- H05K2203/0502—Patterning and lithography
- H05K2203/052—Magnetographic patterning
-
- 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
- H05K2203/13—Moulding and encapsulation; Deposition techniques; Protective layers
- H05K2203/1377—Protective layers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a printed circuit board and a method of coating white oil on a surface. The method comprises the following steps of A, selecting a printed circuit board; B. making the printed circuit board to a welding prevention process according to a flow; C, removing an oxide layer on a surface of the printed circuit board, silkscreening a layer of green oil on the printed circuit board surface, after the silkscreen, carrying out first pre-baking, and then through counterpoint, exposure, development and precuring flows, acquiring the printed circuit board whose surface is coated with the green oil; D, carrying out pre-processing on the printed circuit board which is printed with the green oil; E, after the pre-processing, silkscreening a layer of white oil on a green oil surface, and after the silkscreen, carrying out second pre-baking; F, making a welding prevention graph possessing the white oil on the printed circuit board; and G, using UV light to carry out procuring and then using a post-baking mode to carry out curing. Compared to a traditional method, by using the method of the invention, a problem that the white oil is crisp and is easy to crack is solved; reliability of the printed circuit board is increased and simultaneously reliability of long-term usage of a user is improved.
Description
Technical field
The present invention relates to printed circuit board field, particularly relate to a kind of printed circuit board and the method for surface-coated white oil.
Background technology
For preventing the surface of printed circuit board from aoxidizing, wipe the problem such as flower and scolding tin short circuit, need after graphic making,
Online road surfaces coats one layer of ink with insulating effect.At present no matter ink on the market in industry, be from characteristic, one-tenth
Point, effect or color on, its kind is the most various.For the color of ink, can be divided into white, green, redness, black,
Purple etc..Certainly the occasion that different colours is applied is different, and these needs determine according to the application of product.For white oil
Ink, is typically employed in LED field, owing to its composition is containing titanium elements, thus the most crisp, after coating solidification, easily ftracture, impact
Printed circuit board, even affects the long-term reliability of terminal electronic product, and this is also that puzzlement printed circuit board manufacturer makes surface
One of problem that coating white ink is maximum.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of printed circuit board and surface-coated is white
The method of oil, it is intended to solve the problem that the white oil of existing printed circuit board coating easily ftractures.
Technical scheme is as follows:
A kind of method of printed circuit board surface-coated white oil, wherein, including step:
A, selection printed circuit board；
B, described printed circuit board is made to anti-welding operation according to flow process；
C, the oxide layer on removing printed circuit board surface, at one layer of green oil of printed circuit board surface silk-screen, carry out first after silk-screen
Secondary pre-baked, be then passed through para-position, expose, develop, precuring flow process, obtain the printed circuit board of surface-coated green oil；
D, the printed circuit board being printed on green oil is carried out pre-treatment；
After E, pre-treatment, at one layer of white oil of green oil surface silk-screen, carry out second time after silk-screen pre-baked；
F, produce there is the anti-welding figure of white oil on a printed circuit board；
G, first carry out precuring with UV light, more roasting mode solidifies after using.
The method of described printed circuit board surface-coated white oil, wherein, in described step D, closes in pretreatment process
Close polish-brush.
The method of described printed circuit board surface-coated white oil, wherein, in described step E, the most pre-baked temperature
It it is 70 ~ 80 DEG C.
The method of described printed circuit board surface-coated white oil, wherein, in described step F, use successively film aligning,
Exposed and developed mode produces anti-welding figure, and wherein, during exposure, exposure guide rule is 10-12 level, developing powder 4-6m/min.
The method of described printed circuit board surface-coated white oil, wherein, in described step G, rear roasting temperature is 145 ~ 155
℃。
The method of described printed circuit board surface-coated white oil, wherein, in described step C, the thickness of described green oil is
5-20μm。
The method of described printed circuit board surface-coated white oil, wherein, in described step C, exposure guide rule progression during exposure
For 10-13 level, developing powder is 5.5-7m/min.
The method of described printed circuit board surface-coated white oil, wherein, in described step C, the most pre-baked temperature
It it is 70 ~ 80 DEG C.
The method of described printed circuit board surface-coated white oil, wherein, in described step E, described white oil thickness is 5-
30μm。
A kind of printed circuit board, wherein, uses method as above to make.
Beneficial effect: the method for the present invention, it is adaptable to all surface needs to coat the printed circuit board of white oil, relatively conventional
The method of direct silk-screen white oil, not only solve white oil crisp, easily the problem of cracking, improve surface-coated white oil and print electricity
The reliability of road plate, also improves user's long term reliability simultaneously.
Accompanying drawing explanation
Fig. 1 is the flow chart of the method preferred embodiment of the present invention a kind of printed circuit board surface-coated white oil.
Fig. 2 is the schematic diagram of printed circuit board surface-coated white oil of the present invention.
Fig. 3 is the printed circuit board sectional view after surface-coated white oil.
Detailed description of the invention
The present invention provides a kind of printed circuit board and the method for surface-coated white oil, for making the purpose of the present invention, technical side
Case and effect are clearer, clear and definite, and the present invention is described in more detail below.Should be appreciated that concrete reality described herein
Execute example only in order to explain the present invention, be not intended to limit the present invention.
Refer to the flow process of the method preferred embodiment that Fig. 1, Fig. 1 are the present invention a kind of printed circuit board surface-coated white oil
Figure, as it can be seen, it includes step:
S1, selection printed circuit board；
S2, described printed circuit board is made to anti-welding operation according to flow process；
S3, the oxide layer on removing printed circuit board surface, at one layer of green oil of printed circuit board surface silk-screen, carry out first after silk-screen
Secondary pre-baked, be then passed through para-position, expose, develop, precuring flow process, obtain the printed circuit board of surface-coated green oil；
S4, the printed circuit board being printed on green oil is carried out pre-treatment；
After S5, pre-treatment, at one layer of white oil of green oil surface silk-screen, carry out second time after silk-screen pre-baked；
S6, produce there is the anti-welding figure of white oil on a printed circuit board；
S7, first carry out precuring with UV light, more roasting mode solidifies after using.
In described step S1, selected printed circuit board is conventional printed circuit boards, and it needs coating white for surface
Oil is as the printed circuit board of welding resisting layer.
In described step S2, described printed circuit board is made to anti-welding operation according to flow process；The most successively according to
Sawing sheet, hole, heavy copper, figure, graphic plating, the order of etching make, and carry out follow-up anti-welding after etching.
In described step S3, first carry out pre-treatment, i.e. use the mode such as microetch or volcanic ash to remove printed circuit board table
The oxide layer in face, to increase roughness.
Then one layer of green oil (green ink) of printed circuit board surface silk-screen.Specifically can use the half tone of 51T, print
The green oil of circuit board surface silk-screen a layer thickness 5-20 μm, such as thickness is 15 μm.
Carry out for the first time the most pre-baked after silk-screen, be then passed through para-position, expose, develop, precuring flow process, obtain surface-coated
The printed circuit board of green oil.
Wherein, the most pre-baked temperature is 70 ~ 80 DEG C, the most preferably 75 DEG C.Exposure guide rule level during exposure in step S3
Number is 10-13 level, and developing powder is 5.5-7m/min, and such as exposure guide rule progression is 12 grades, and developing powder is 6m/min.
In described step S4, the printed circuit board being printed on green oil is carried out pre-treatment (can be described as second time pre-treatment, front
The pre-treatment stated can be described as pre-treatment for the first time), pre-treatment herein is different from aforesaid pre-treatment, needs to close polish-brush, anti-
Only green oil layer is damaged.This step ensure that the adhesion of twice ink for screen printing, specifically uses washing and volcanic ash to process
Mode, increase surface roughness, to ensure the adhesion of two kinds of ink.
In described step S5, use the half tone of 51T, one layer of white oil (white ink) of green oil surface silk-screen, after silk-screen
Carrying out second time pre-baked, the most pre-baked temperature is 70 ~ 80 DEG C, the most preferably 75 DEG C.In this step, the thickness of white oil is excellent
Elect 5-30 μm, the most preferably 20 μm as.
In described step S6, produce the anti-welding figure with white oil on a printed circuit board；Specifically, adopt successively
Producing anti-welding figure by film aligning, exposed and developed mode, wherein, during exposure, exposure guide rule is 10-12 level, developing powder
Being preferably 11 grades for 4-6m/min, such as exposure guide rule, developing powder is preferably 5m/min.
In described step S7, the printed circuit board after development, first carry out precuring with UV light, then enter by rear roasting mode
Row solidification, to ensure ink and the adhesion on printed circuit board surface.Wherein using UV light precuring is to use one to send
The device of UV intensive ultraviolet, utilizes the UV intensive ultraviolet sent, makes ink reach the effect of precuring, makes ink increase certain
Hardness, prevents from being scratched through other processing procedure before being fully cured.
Further, rear roasting temperature is 145 ~ 155 DEG C, such as 150 DEG C, so that ink and printed circuit board have enough knots
Make a concerted effort.
The schematic diagram of printed circuit board surface-coated white oil of the present invention, as in figure 2 it is shown, i.e. at printed circuit board 100(on it
Be provided with conductive pattern 110) on first print one layer of green oil 120, then print one layer of white oil 130.From another perspective, surface of the present invention
Printed circuit board sectional view after coating white oil, as it is shown on figure 3, be provided with conductive pattern 110 on a printed circuit board, then uses
Green oil 120 covers, then covers with white oil 130.
Traditional process is after printed circuit board etches, after producing line pattern, to anti-welding operation, use pre-treatment-
Silk-screen-pre-baked-para-position exposure-development-rear roasting solidification, completes the coating solidification of superficial white ink, completes the system of anti-welding figure
Make.But the white ink that this traditional method is produced easily ftractures, easily infiltrate at rear operation liquid medicine, cause short circuit, impact
Reliability.
And in the method for the present invention, preceding processes is normal making, after anti-welding operation, the most online road surfaces silk-screen one layer
Green ink, flow process is pre-treatment-silk-screen-pre-baked-para-position exposure-development-precuring, the most again through pre-treatment-silk-screen-pre-
Roasting-para-position exposure-development-precuring-rear roasting mode, it is achieved the coating solidification of ink, reaches to protect printed circuit board surface
The effect of figure.
Green ink and white ink in the present invention can use screen printer, use the half tone of above-mentioned 51T, will adjust with scraper
The ink of good viscosity passes through screen painting on patterned surface.
Modulation used green and white ink is as follows: increase profit 10-100ml/kg, viscosity 50-180dpa.s, specifically
Requirement according to Printing ink producing manufacturer used and ink characteristics, that adds corresponding requirements opens profit, is modulated into the oil of required viscosity
Ink.
The present invention uses twice para-position Exposure mode, it is possible to resolve white oil is different because of characteristic with green oil, makes parameter different, and one
Secondary para-position exposure there will be problem ill-exposed, that development is the cleanest.
The present invention also provides for a kind of printed circuit board, wherein, uses method as above to make.
The method of solution printed circuit board surface-coated white oil provided by the present invention cracking, it is adaptable to all surface coats
The printed circuit board of white oil, including single two-sided and high multi-layer sheet, also includes rigid printed board and metal base printed board.The present invention's
The method of the most original direct silk-screen white oil of method, not only solves white oil crisp, easily the problem of cracking, improves surface and is coated with
Cover the integrity problem of white oil printed circuit board, also improve the long-term reliability that client uses simultaneously.
In sum, the method for the present invention, it is adaptable to all surface needs to coat the printed circuit board of white oil, relatively conventional
The method of direct silk-screen white oil, not only solve white oil crisp, easily the problem of cracking, improve surface-coated white oil and print electricity
The reliability of road plate, also improves user's long term reliability simultaneously.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved according to the above description or to convert, all these modifications and variations all should belong to the guarantor of claims of the present invention
Protect scope.
Claims (10)
1. the method for a printed circuit board surface-coated white oil, it is characterised in that include step:
A, selection printed circuit board；
B, described printed circuit board is made to anti-welding operation according to flow process；
C, the oxide layer on removing printed circuit board surface, at one layer of green oil of printed circuit board surface silk-screen, carry out first after silk-screen
Secondary pre-baked, be then passed through para-position, expose, develop, precuring flow process, obtain the printed circuit board of surface-coated green oil；
D, the printed circuit board being printed on green oil is carried out pre-treatment；
After E, pre-treatment, at one layer of white oil of green oil surface silk-screen, carry out second time after silk-screen pre-baked；
F, produce there is the anti-welding figure of white oil on a printed circuit board；
G, first carry out precuring with UV light, more roasting mode solidifies after using.
The method of printed circuit board surface-coated white oil the most according to claim 1, it is characterised in that in described step D,
Polish-brush is closed in pretreatment process.
The method of printed circuit board surface-coated white oil the most according to claim 1, it is characterised in that in described step E,
The most pre-baked temperature is 70 ~ 80 DEG C.
The method of printed circuit board surface-coated white oil the most according to claim 1, it is characterised in that in described step F,
Using film aligning, exposed and developed mode to produce anti-welding figure successively, wherein, during exposure, exposure guide rule is 10-12 level, aobvious
Shadow speed 4-6m/min.
The method of printed circuit board surface-coated white oil the most according to claim 1, it is characterised in that in described step G,
Rear roasting temperature is 145 ~ 155 DEG C.
The method of printed circuit board surface-coated white oil the most according to claim 1, it is characterised in that in described step C,
The thickness of described green oil is 5-20 μm.
The method of printed circuit board surface-coated white oil the most according to claim 1, it is characterised in that in described step C,
During exposure, exposure guide rule progression is 10-13 level, and developing powder is 5.5-7m/min.
The method of printed circuit board surface-coated white oil the most according to claim 1, it is characterised in that in described step C,
The most pre-baked temperature is 70 ~ 80 DEG C.
The method of printed circuit board surface-coated white oil the most according to claim 1, it is characterised in that in described step E,
Described white oil thickness is 5-30 μm.
10. a printed circuit board, it is characterised in that use the method as described in any one of claim 1 ~ 9 to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610645513.7A CN106061128A (en) | 2016-08-09 | 2016-08-09 | Printed circuit board and method of coating white oil on surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610645513.7A CN106061128A (en) | 2016-08-09 | 2016-08-09 | Printed circuit board and method of coating white oil on surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106061128A true CN106061128A (en) | 2016-10-26 |
Family
ID=57480272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610645513.7A Pending CN106061128A (en) | 2016-08-09 | 2016-08-09 | Printed circuit board and method of coating white oil on surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106061128A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107215113A (en) * | 2017-05-16 | 2017-09-29 | 胜宏科技（惠州）股份有限公司 | A kind of preparation method for laser carving bar code word white oil block |
| CN107613631A (en) * | 2017-08-31 | 2018-01-19 | 江苏普诺威电子股份有限公司 | Wiring board pin ink indicating arrangement and its processing technology |
| CN108012443A (en) * | 2017-11-29 | 2018-05-08 | 惠州市特创电子科技有限公司 | A kind of wiring board welding resistance printing method |
| CN113556862A (en) * | 2021-07-20 | 2021-10-26 | 全成信电子（深圳）股份有限公司 | PCB structure capable of rapidly distinguishing different models with same size and manufacturing method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005118212A1 (en) * | 2004-06-01 | 2005-12-15 | Original Solutions Inc. | Solder mask enhancement and method of inspecting printed circuit board assemblies |
| CN201234402Y (en) * | 2008-07-14 | 2009-05-06 | 比亚迪股份有限公司 | PCB board |
| CN101668390A (en) * | 2009-09-22 | 2010-03-10 | 深圳崇达多层线路板有限公司 | Production technology of PCB (Printed Circuit Board) solder mask |
| CN101742814A (en) * | 2009-12-22 | 2010-06-16 | 深圳华为通信技术有限公司 | Printed circuit board shielding method and printed circuit board |
| CN203251505U (en) * | 2013-05-07 | 2013-10-23 | 常州澳弘电子有限公司 | Circuit board with white oil coverage layer |
| CN204014261U (en) * | 2014-07-14 | 2014-12-10 | 美的集团武汉制冷设备有限公司 | Wiring board |
-
2016
- 2016-08-09 CN CN201610645513.7A patent/CN106061128A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005118212A1 (en) * | 2004-06-01 | 2005-12-15 | Original Solutions Inc. | Solder mask enhancement and method of inspecting printed circuit board assemblies |
| CN201234402Y (en) * | 2008-07-14 | 2009-05-06 | 比亚迪股份有限公司 | PCB board |
| CN101668390A (en) * | 2009-09-22 | 2010-03-10 | 深圳崇达多层线路板有限公司 | Production technology of PCB (Printed Circuit Board) solder mask |
| CN101742814A (en) * | 2009-12-22 | 2010-06-16 | 深圳华为通信技术有限公司 | Printed circuit board shielding method and printed circuit board |
| CN203251505U (en) * | 2013-05-07 | 2013-10-23 | 常州澳弘电子有限公司 | Circuit board with white oil coverage layer |
| CN204014261U (en) * | 2014-07-14 | 2014-12-10 | 美的集团武汉制冷设备有限公司 | Wiring board |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107215113A (en) * | 2017-05-16 | 2017-09-29 | 胜宏科技（惠州）股份有限公司 | A kind of preparation method for laser carving bar code word white oil block |
| CN107613631A (en) * | 2017-08-31 | 2018-01-19 | 江苏普诺威电子股份有限公司 | Wiring board pin ink indicating arrangement and its processing technology |
| CN108012443A (en) * | 2017-11-29 | 2018-05-08 | 惠州市特创电子科技有限公司 | A kind of wiring board welding resistance printing method |
| CN108012443B (en) * | 2017-11-29 | 2020-02-14 | 惠州市特创电子科技有限公司 | Solder mask printing method for circuit board |
| CN113556862A (en) * | 2021-07-20 | 2021-10-26 | 全成信电子（深圳）股份有限公司 | PCB structure capable of rapidly distinguishing different models with same size and manufacturing method thereof |
| CN113556862B (en) * | 2021-07-20 | 2023-01-17 | 全成信电子（深圳）股份有限公司 | PCB structure capable of rapidly distinguishing different models with same size and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106061128A (en) | Printed circuit board and method of coating white oil on surface | |
| CN107493662B (en) | Method for manufacturing carbon oil with low resistance value and thickness of more than or equal to 25um on printed circuit board | |
| CN101765298B (en) | Processing technology of printed circuit board | |
| CN103660652A (en) | Silk screen printing technology for printed circuit board | |
| CN103874336B (en) | Carbon oil printing process for circuit board | |
| CN110366323B (en) | Manufacturing method of circuit board solder mask layer | |
| CN104540331A (en) | Printed circuit board solder mask manufacturing method | |
| CN102523698A (en) | Method for filling through-holes of printed circuit board (PCB) with solder mask ink for double-sided opening | |
| CN102883546A (en) | Thick copper plate solder resistance process | |
| TWI609613B (en) | Silkscreen printing method for manufacturing printed circuit board | |
| CN106993378A (en) | A kind of pcb board selective surface handling process | |
| CN101977483A (en) | Welding resistance method for industrial control panel | |
| CN108541142A (en) | A kind of PCB inner line figures shifting process | |
| CN106852033A (en) | High precision part very high current printed circuit board processing method | |
| US2912312A (en) | Method of making components for printed circuits | |
| CN105338744A (en) | Manufacturing method for PCB with double-sided oil-coating via hole and tin spraying surface treatment | |
| CN107128091A (en) | One kind improves wet film dirty oil plate and falls oily technique | |
| CN109109482A (en) | A kind of method of cold wave printing | |
| CN110351958A (en) | A kind of plate thickness is lower than the anti-welding making method of white oil plate of 0.4mm | |
| CN110572952A (en) | Film covering method of ultrathin 5G copper-clad plate and preparation method of copper-clad plate | |
| CN107318228B (en) | A kind of manufacturing method and its manufacturing device of printed circuit board | |
| CN105252882B (en) | A kind of intelligent gravu re system | |
| CN106817849A (en) | A kind of thick copper plate solder resistance process | |
| CN110139498A (en) | The anti-welding coating technique of flexible circuit board | |
| CN105376954B (en) | A kind of firmly golden faces of battery PCB prevent the method for wiping flower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161026 |