CN104470256B - A kind of ink for screen printing technique of flexible circuitry edge connector - Google Patents
A kind of ink for screen printing technique of flexible circuitry edge connector Download PDFInfo
- Publication number
- CN104470256B CN104470256B CN201410709888.6A CN201410709888A CN104470256B CN 104470256 B CN104470256 B CN 104470256B CN 201410709888 A CN201410709888 A CN 201410709888A CN 104470256 B CN104470256 B CN 104470256B
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- China
- Prior art keywords
- ink
- green oil
- wiring board
- half tone
- screen printing
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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.)
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000007650 screen-printing Methods 0.000 title claims abstract description 21
- 239000003921 oil Substances 0.000 claims abstract description 80
- 230000004048 modification Effects 0.000 claims abstract description 27
- 238000012986 modification Methods 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 12
- 238000007639 printing Methods 0.000 claims abstract description 11
- 238000007711 solidification Methods 0.000 claims abstract description 11
- 230000008023 solidification Effects 0.000 claims abstract description 11
- 229920000728 polyester Polymers 0.000 claims abstract description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 7
- 239000010949 copper Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000009472 formulation Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 229920002120 photoresistant polymer Polymers 0.000 claims abstract description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000003760 hair shine Effects 0.000 claims description 4
- 238000005530 etching Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 206010013786 Dry skin Diseases 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4007—Surface contacts, e.g. bumps
-
- 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
- H05K2203/16—Inspection; Monitoring; Aligning
- H05K2203/166—Alignment or registration; Control of registration
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Printing Methods (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of ink for screen printing technique of flexible circuitry edge connector, including：Line film modification is carried out, width is respectively etched at the two ends for covering each single-piece of copper face of base material and is 0.1mm contraposition tag line, and carries out green oil half tone data modification；The photoresists for choosing 120T mesh numbers, 18N/cm tension force and 45 degree of polyester net and 10um thickness carry out preparation before printing down, then go out to shine the green oil film according to the test harmomegathus value for treating golden finger wiring board on ink for screen printing and shine green oil half tone；On the premise of without profit is opened, using hat product L45LG20 thermosetting green oils, according to L45LG20：H43a=94:6 ratios carry out ink formulation；Contraposition printing is carried out using screen printer；Preliminary drying and solidification are carried out to the wiring board printed.The present invention has the advantages that aligning accuracy is high, technique is simple, flexibility is good and is easily controlled, in the manufacture that can be widely applied to wiring board.
Description
Technical field
The present invention relates to the manufacturing process of wiring board, especially a kind of ink for screen printing technique of flexible circuitry edge connector.
Background technology
Develop as electronic product is intended to " light, thin, convenient " change, FPC is widely used in each electronic product
In, play a part of being electrically connected electronic component, become the widely used important accessory of electronics industry.The gold of FPC
Finger, is being commonly called as the edge connector that FPC is connected with each other, itself is a part for FPC, by flexible circuitry
Copper foil layer one end extension of plate is formed.
The bending protection of current FPC, especially printed circuit board is mainly by printing-ink covering come real
Existing, it is designed with wide 1mm cover layer bridge to stop that green oil permeates in golden finger and bent area.With communication electronic device
Develop rapidly, to the cabling requirement more and more higher of wiring board, it is desirable to which inner bending effect in bent area is consistent, and wiring board is bent
Area's inner width 1mm cover layer bridges have had a strong impact on bending performance, therefore remove wide 1mm cover layer bridge and directly print golden on ink
Finger is into new developing direction.
However, current golden finger printing-ink technique has following shortcoming or deficiency：
（1）, existing technique is typically using the contraposition of 4 jiaos of crosses, it is impossible to clearly examine the printing effect of single-piece, it is right
Position precision is low, it is impossible to ensure the length of golden finger in the range of customer requirement.
（2）, using green oil bar replace PI in existing green oil bent area（Polyimides）Bar can also realize that golden finger prints
Brush ink, it needs increase photosensitive-ink to be covered in golden finger area, first passes through exposure imaging and go out one and PI bar said functions
Ink strip, then ink for screen printing is in bent area, and weak point is that it needs multiple printing-ink, and technique is more complicated and easily causes
The bending effect of ink overlapping is harder, and flexibility is poor.
（3）, prior art typically printed using 120T, 0 degree of polyester net, the green oil pattern edge printed out is sawed
Dentation, it is impossible to control the length of golden finger.
The content of the invention
In order to solve the above-mentioned technical problem, the purpose of the present invention is：There is provided a kind of aligning accuracy height, technique simple, soft
Property it is good and be easily controlled, the ink for screen printing technique of flexible circuitry edge connector.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of ink for screen printing technique of flexible circuitry edge connector, including：
S1, progress line film modification, it is 0.1mm's that width is respectively etched at the two ends for covering each single-piece of copper face of base material
Tag line is aligned, and carries out green oil half tone data modification, pair that the contraposition tag line and substrate location for making green oil half tone are etched
Bit identification line is completely superposed；
S2, the photoresists for choosing 120T mesh numbers, 18N/cm tension force and 45 degree of polyester net and 10um thickness are shone
Preparation before version, then goes out to shine the green oil film according to the test harmomegathus value for treating golden finger wiring board on ink for screen printing and shines green oil
Half tone；
S3, on the premise of without profit is opened, using hat product L45LG20 thermosetting green oils, according to L45LG20：H43a=
94:6 ratios carry out ink formulation；
S4, the contraposition tag line of single-piece and the wide contraposition marks of the 0.1mm of wiring board single-piece etching on green oil half tone is ensured
On the premise of line is overlapped, contraposition printing is carried out to wiring board using screen printer；
S5, preliminary drying and solidification are carried out to the wiring board that prints, so that ink and wiring board are combined closely.
Further, the step S1 will also be met when carrying out green oil half tone data modification：The print of green oil half tone after modification
Map brushing shape inside contracts 0.2mm with respect to client's green oil tag line.
Further, the step S1 will also be met when carrying out green oil half tone data modification：Green oil half tone opens after modification
Window position press against golden finger at least 0.2mm, if length not enough if need the extension of golden finger to 0.2mm.
Further, the technological parameter of screen printer is in the step S4：Continuous precision is 0.05mm, and silk-screen speed is less than 5
Lattice, scraper angle is 15 degree, nets a width of 1-5mm.
Further, the step S5, it includes：
S51, by the green oil wiring board printed stand 15-30 minutes；
S52, the preliminary drying under 70 degrees Celsius of temperature conditionss to the progress 20 minutes of green oil wiring board；
S53, under 150 degrees Celsius of temperature conditionss, the ink solidification of 60 minutes is carried out to pre-baked green oil wiring board.
The beneficial effects of the invention are as follows：Employ single-piece technique of counterpoint, flexible printed circuit board base material to cover copper face every
The two ends of individual single-piece respectively etch width 0.1mm to bit line, can clearly examine the printing effect of single-piece, and aligning accuracy is high,
It can guarantee that the length of golden finger in the range of customer requirement；Golden finger silk-screen is same green by hat product L45LG20 thermosettings
The ink of oil allotment, no to need multiple printing-ink, technique is simple and better softness；Using 120T, 45 degree of polyester net
Instead of traditional 120T, 0 degree of polyester net, green oil edge relatively smooth straight line can be printed out, so as to form shape
The green oil covering golden finger of specification, it is easy to control the length of golden finger.Further, the printed pattern of green oil half tone is relative after modification
Client's green oil tag line inside contracts 0.2mm, it is ensured that green oil oil spillage, relatively reliable.Further, after modification green oil half tone windowing
Position press against golden finger at least 0.2mm, prevent from causing green oil along the oil spillage between finger because the finger for the position that opens a window is too short
It is different, it is relatively reliable.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a kind of flow chart of the ink for screen printing technique of flexible circuitry edge connector of the invention；
Fig. 2 is step S5 of the present invention flow chart；
Fig. 3 is the process chart of the embodiment of the present invention one；
Fig. 4 is the schematic diagram that base material copper of the present invention etches silk-screen contraposition；
Fig. 5 is the schematic diagram that green oil half tone of the present invention aligns tag line.
Reference：1st, client's green oil tag line；2nd, the contraposition tag line that substrate location is etched；3rd, pair of green oil half tone
Bit identification line.
Embodiment
Reference picture 1, a kind of ink for screen printing technique of flexible circuitry edge connector, including：
S1, progress line film modification, it is 0.1mm's that width is respectively etched at the two ends for covering each single-piece of copper face of base material
Tag line is aligned, and carries out green oil half tone data modification, pair that the contraposition tag line and substrate location for making green oil half tone are etched
Bit identification line is completely superposed；
S2, the photoresists for choosing 120T mesh numbers, 18N/cm tension force and 45 degree of polyester net and 10um thickness are shone
Preparation before version, then goes out to shine the green oil film according to the test harmomegathus value for treating golden finger wiring board on ink for screen printing and shines green oil
Half tone；
S3, on the premise of without profit is opened, using hat product L45LG20 thermosetting green oils, according to L45LG20：H43a=
94:6 ratios carry out ink formulation；
S4, the contraposition tag line of single-piece and the wide contraposition marks of the 0.1mm of wiring board single-piece etching on green oil half tone is ensured
On the premise of line is overlapped, contraposition printing is carried out to wiring board using screen printer；
S5, preliminary drying and solidification are carried out to the wiring board that prints, so that ink and wiring board are combined closely.
Wherein, L45LG20, H43a and the allotment ratio between them are provided by ink manufacturer.L45LG20 is ink
Host, H43a is ink solidification agent.
It is further used as preferred embodiment, the step S1 will also be met when carrying out green oil half tone data modification：
The printed pattern of green oil half tone inside contracts 0.2mm with respect to client's green oil tag line after modification.
Further, the step S1 will also be met when carrying out green oil half tone data modification：Green oil half tone opens after modification
Window position press against golden finger at least 0.2mm, if length not enough if need the extension of golden finger to 0.2mm.
It is further used as preferred embodiment, the technological parameter of screen printer is in the step S4：Continuously precision is
0.05mm, silk-screen speed is less than 5 lattice, and scraper angle is 15 degree, nets a width of 1-5mm.
Reference picture 2, is further used as preferred embodiment, the step S5, and it includes：
S51, by the green oil wiring board printed stand 15-30 minutes；
S52, the preliminary drying under 70 degrees Celsius of temperature conditionss to the progress 20 minutes of green oil wiring board；
S53, under 150 degrees Celsius of temperature conditionss, the ink solidification of 60 minutes is carried out to pre-baked green oil wiring board.
The present invention is described in further detail with reference to specific embodiment.
Embodiment one
As shown in figure 3, the ink for screen printing technique of the flexible printed circuit board golden finger of the present invention, including data modification, net
Version prepares, contraposition printing and preliminary drying are with solidifying this five processes.This five processes are introduced one by one separately below：
（One）Data modification
The data modification process of the present invention includes：
（1）Line film change, base material cover copper face etch each single-piece two ends etch width be 0.1mm pair
Bit identification line（The contraposition tag line 2 that i.e. Fig. 4 substrate location is etched）；
（2）Green oil half tone data modification, ink tag line of the printed pattern with respect to customer requirement of green oil half tone（That is Fig. 4
Client's green oil tag line 1）0.2mm is inside contracted as green oil oil spillage, green oil half tone windowing position ensures to press against golden finger 0.2mm
More than, needed when not enough finger extension to 0.2mm, prevent that the finger of windowing position is too short, and because ditch effect causes
Green oil is different along the oil spillage between finger.
Moreover, it is noted that the contraposition tag line of green oil half tone during modification（As shown in Figure 5）Etch what is come with substrate location
Bit line must be overlapped.
（Two）Half tone prepares
The tension force of polyester net of the present invention is 18N/cm and mesh number is 120T, it is therefore an objective to ensure that green oil thickness is requiring 10-
In the range of 18um；The thickness control of photoresists is 10um, it is intended that reduce oil spillage of the ink between finger；Polyester net is adopted
With 45 degree of inclined wires, it is therefore an objective to allow the green oil pattern edge printed out to form uniform straight line, it is easy to the length progress to golden finger
Control.
After the completion of polyester net and photoresists are chosen, it is possible to according to the harmomegathus for treating that finger wiring board is tested on ink for screen printing
It is worth the solarization green oil film and shines half tone, this process must also ensures that the contraposition tag line of half tone and wiring board is completely superposed.
（Three）Ink formulation
The present invention uses hat product L45LG20 thermosetting green oils, without profit is opened, according to L45LG20：H43a=94:6 ratios
Carry out ink formulation.100g ink is such as allocated, first can be placed in weighed using electronic scale 94 grams of L45LG20 ink hosts once
Property cup in, then 6 grams of H43a curing agent are added to sanitary cup, and host is well mixed with curing agent by stirring,
Just can normally it be used after standing 10 minutes.
（Four）Contraposition printing
The present invention must etch the contraposition tag line of single-piece on green oil half tone and wiring board single-piece when carrying out contraposition printing
Out 0.1mm width contraposition tag line overlap, therefore require screen printer continuous precision be 0.05mm, silk-screen speed be 5 lattice with
Under, scraper angle is 15 degree, and net is away from for 1-5mm, so that the pattern printed out is smooth.
（Five）Preliminary drying and solidification
The green oil wiring board printed first stands 15-30 minutes, is then solidified by the way of segmentation baking：First
70 degrees Celsius, 20 minutes of stage preliminary drying；Second stage solidifies 150 degrees Celsius, 60 minutes.
The bubble produced when 15-30 minutes being and printing to allow is stood to overflow；The purpose of preliminary drying is slowly to drive away in green oil
The solvent in face, prevents that golden finger length is different caused by solvent volatilization is too fast；Ink solidification is carried out again after 20 minutes preliminary dryings, is made
Ink is closely linked with wiring board.
The flexible printed circuit board golden finger ink for screen printing technique of the present invention, can obtain the golden finger silk-screen of ideal form
Ink, and this technique is simple, is easily controlled, cost is low.
Above is the preferable implementation to the present invention is illustrated, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalent variations or replace on the premise of without prejudice to spirit of the invention
Change, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (5)
1. a kind of ink for screen printing technique of flexible circuitry edge connector, it is characterised in that：Including：
Step S1, progress line film modification, it is 0.1mm's that width is respectively etched at the two ends for covering each single-piece of copper face of base material
Tag line is aligned, and carries out green oil half tone data modification, pair that the contraposition tag line and substrate location for making green oil half tone are etched
Bit identification line is completely superposed；
Step S2, the photoresists for choosing 120T mesh numbers, 18N/cm tension force and 45 degree of polyester net and 10um thickness are shone
Preparation before version, then goes out to shine the green oil film according to the test harmomegathus value for treating golden finger wiring board on ink for screen printing and shines green oil
Half tone；
Step S3, on the premise of without profit is opened, using hat product L45LG20 thermosetting green oils, according to L45LG20：H43a=
94:6 mass ratio carries out ink formulation, and the H43a is ink solidification agent；
Step S4, the contraposition tag line of single-piece and the wide contraposition marks of the 0.1mm of wiring board single-piece etching on green oil half tone is ensured
On the premise of line is overlapped, contraposition printing is carried out using screen printer；
Step S5, preliminary drying and solidification are carried out to the wiring board that prints, so that ink and wiring board are combined closely.
2. a kind of ink for screen printing technique of flexible circuitry edge connector according to claim 1, it is characterised in that：The step
Rapid S1 will also be met when carrying out green oil half tone data modification：The printed pattern of green oil half tone is identified with respect to client's green oil after modification
Line inside contracts 0.2mm.
3. a kind of ink for screen printing technique of flexible circuitry edge connector according to claim 2, it is characterised in that：The step
Rapid S1 will also be met when carrying out green oil half tone data modification：The windowing position of green oil half tone press against golden finger at least after modification
0.2mm, if length not enough if need the extension of golden finger to 0.2mm.
4. a kind of ink for screen printing technique of flexible circuitry edge connector according to claim 2, it is characterised in that：
The technological parameter of screen printer is in the step S4：Continuous precision is 0.05mm, and silk-screen speed is less than 5 lattice, scraper angle
For 15 degree, a width of 1-5mm is netted.
5. a kind of ink for screen printing technique of flexible circuitry edge connector according to claim 1, it is characterised in that：The step
Rapid S5, it includes：
S51, by the green oil wiring board printed stand 15-30 minutes；
S52, the preliminary drying under 70 degrees Celsius of temperature conditionss to the progress 20 minutes of green oil wiring board；
S53, under 150 degrees Celsius of temperature conditionss, the ink solidification of 60 minutes is carried out to pre-baked green oil wiring board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709888.6A CN104470256B (en) | 2014-11-28 | 2014-11-28 | A kind of ink for screen printing technique of flexible circuitry edge connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709888.6A CN104470256B (en) | 2014-11-28 | 2014-11-28 | A kind of ink for screen printing technique of flexible circuitry edge connector |
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| Publication Number | Publication Date |
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| CN104470256A CN104470256A (en) | 2015-03-25 |
| CN104470256B true CN104470256B (en) | 2017-11-07 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105163506A (en) * | 2015-08-04 | 2015-12-16 | 深圳市景旺电子股份有限公司 | Composite surface treatment method for PCB |
| CN107979920B (en) * | 2017-10-30 | 2020-09-01 | 上达电子（深圳）股份有限公司 | Circuit board processing method |
| CN109413882B (en) * | 2018-12-12 | 2021-09-21 | 东莞市若美电子科技有限公司 | PCB (printed circuit board) anti-welding manufacturing process applied to LED display screen |
| CN113225939B (en) * | 2021-04-16 | 2022-11-11 | 深圳正峰印刷有限公司 | Flexible circuit preparation method and flexible circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101355856A (en) * | 2008-08-13 | 2009-01-28 | 东莞生益电子有限公司 | Method for preparing hierarchical and grading gold finger plate using method of selecting wet film |
| CN103831342A (en) * | 2014-03-05 | 2014-06-04 | 艾柯豪博（苏州）电子有限公司 | Roll-to-roll insulating varnish printing process of stamping parts |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100336401B1 (en) * | 2000-04-10 | 2002-05-10 | 조병우 | Manufacturing devices and method of printed circuit board |
| US20030034328A1 (en) * | 2001-08-20 | 2003-02-20 | Pang-Tsung Lu | Method of making 3d patterns on a mold |
| JP4878928B2 (en) * | 2006-04-18 | 2012-02-15 | 株式会社秀峰 | A method for producing a color coating and a color printing body thereby. |
| JP2011201271A (en) * | 2010-03-26 | 2011-10-13 | Toppan Printing Co Ltd | Screen printing apparatus for pushing coating material on mask surface, and printing method therefor |
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2014
- 2014-11-28 CN CN201410709888.6A patent/CN104470256B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101355856A (en) * | 2008-08-13 | 2009-01-28 | 东莞生益电子有限公司 | Method for preparing hierarchical and grading gold finger plate using method of selecting wet film |
| CN103831342A (en) * | 2014-03-05 | 2014-06-04 | 艾柯豪博（苏州）电子有限公司 | Roll-to-roll insulating varnish printing process of stamping parts |
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