CN105448467B - A kind of preparation method of electronic component electrode - Google Patents

A kind of preparation method of electronic component electrode Download PDF

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Publication number
CN105448467B
CN105448467B CN201510966886.XA CN201510966886A CN105448467B CN 105448467 B CN105448467 B CN 105448467B CN 201510966886 A CN201510966886 A CN 201510966886A CN 105448467 B CN105448467 B CN 105448467B
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China
Prior art keywords
electrode
emulsion
green tape
electronic component
film green
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CN201510966886.XA
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CN105448467A (en
Inventor
余瑞麟
戴春雷
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Shenzhen Sunlord Electronics Co Ltd
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Shenzhen Sunlord Electronics Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00Fixed inductances of the signal type 
    • H01F17/0006Printed inductances
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/29Terminals; Tapping arrangements for signal inductances
    • H01F27/292Surface mounted devices
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/32Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying conductive, insulating or magnetic material on a magnetic film, specially adapted for a thin magnetic film
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/29Terminals; Tapping arrangements for signal inductances
    • H01F27/292Surface mounted devices
    • H01F2027/295Surface mounted devices with flexible terminals

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

A kind of preparation method of electronic component electrode, comprises the following steps:1) cast film green tape;2) in the film green tape upper berth emulsion;3) emulsion is exposed using the mask plate for defining electrode pattern;4) emulsion is developed, obtains electrode pattern;5) electrode trenches for making electrode are formed in the film green tape according to the electrode pattern;6) emulsion being layered in the film green tape is removed;7) electrode slurry is filled in the electrode trenches, makes electrode.This method can produce both thick and cross sectional shape side, and the electrode of flush edge, while can also produce electrode thickness and the less exciting coil of line spacing again.

Description

A kind of preparation method of electronic component electrode
Technical field
The present invention relates to a kind of preparation method of electronic component electrode.
Background technology
In electronic component design process, sometimes because demand in properties of product, need to make sometimes some thickness compared with Thick electrode, the making of conventional electrode are made by the way of screen painting, due to by half tone latex when printing thick electrode Be present following defect in the limitation of thickness and various printing conditions, the making of thick electrode, disposably print electrode first not thick; Secondly mode is thickened using repeatedly printing and that repeated printing contraposition deviation and printing are spread out is present;Again electrode shape by Half tone and slurry printing characteristic influence, and are spread out after electrode print and semicircular in shape;It can not finally make between i.e. thickness and line Away from again small exciting coil.
The content of the invention
It is a primary object of the present invention to overcome the deficiencies in the prior art, there is provided a kind of making side of electronic component electrode Method, solves repeated printing contraposition deviation existing for existing method for making its electrode and problem is spread in printing out, and can also make Go out electrode thickness and the less exciting coil of line spacing.
To achieve the above object, the present invention uses following technical scheme:
A kind of preparation method of electronic component electrode, comprises the following steps:
1) cast film green tape;
2) in the film green tape upper berth emulsion;
3) emulsion is exposed using the mask plate for defining electrode pattern;
4) emulsion is developed, obtains electrode pattern;
5) electrode trenches for making electrode are formed in the film green tape according to the electrode pattern;
6) emulsion being layered in the film green tape is removed;
7) electrode slurry is filled in the electrode trenches, makes electrode.
Further:
In step 1), the film green tape contains powder and the moulding material for making the powder shaping, the shaping Material is soluble in the material of organic solvent, acid solution or alkaline solution, it is preferable that the powder for ceramics, ferrite or Iron powder, the moulding material are high polymer material, it is preferable that the film green tape thickness is more than 50 μm.
In step 2), the emulsion is positivity or negative-working photoresist;When the emulsion is negative photoresist, exposure Part colloid solidification, is resistant to the immersion of organic solvent, acidity or weakly alkaline solution and does not dissolve or corrode, unexposed portion can To be dissolved by the solution or be corroded and remove;When the photoresists are positive photoresist, exposed portion colloid decomposes, can be organic Solvent, acidity or weakly alkaline solution dissolving or corrosion and remove, unexposed portion can be resistant to the immersion of the solution and insoluble Solution or corrosion.
In step 3), the electrode pattern of the mask plate selects printing opacity according to emulsion for positivity or negativity It is or light tight, it is preferable that electrode width defined in the electrode pattern is more than 50 μm, the light source ripple of the exposure machine transmitting A length of 365nm.
Uncured part emulsion is dissolved and rinsed well with developer solution in step 4), the institute exposed The pattern for stating film green tape is electrode pattern.
The electrode trenches for making electrode are formed in the film green tape with the mode of etching in step 5), preferably Ground, the moulding material of the film green tape can be dissolved or corroded using etching liquid, but it is not molten to the emulsion after solidification Solution or corrosiveness, it is preferable that the etching liquid is the organic solvent that can dissolve the colloid in the film green tape, preferably Ground, the electrode trenches depth are more than 50 μm.
In step 6), remaining emulsion is removed using liquid parting, it is preferable that the liquid parting is strong alkali solution.
In step 7), the electrode slurry, the electrode slurry are filled to the electrode trenches using half-tone screen printing method For the electrode slurry suitable for screen painting, it is preferable that the electrode slurry is that silver paste or copper are starched.
The electronic component is chip-type laminated electronic component.
The electrode made is that width is more than 50 μm, and thickness is more than 50 μm, and cross sectional shape is rectangle (including square generally Shape) electrode.
Beneficial effects of the present invention:
Using the method for making its electrode of the present invention, it is possible to prevente effectively from repeatability printing existing for existing method for making its electrode Contraposition deviation and printing the problem of spreading out, both thick and cross sectional shape side, and the electrode of flush edge can be produced, simultaneously Also it can produce that electrode is again thick and the less exciting coil of line spacing, so as to meet various products performance to a greater extent Requirement to electrode.
In concrete scheme, electrode pattern is drawn by way of emulsion exposure development is used in film green tape, electricity It is uncured when emulsion is because of exposure at pole figure case to be dissolved by the developing removal, exposed film green tape, organic solvent is subsequently used again Film green tape at this is dissolved, etches electrode trenches, then electricity is finally completed toward silver paste is filled in groove by screen painting mode The making of pole.Electrode, especially thick electrode are made compared to traditional screen printing process, using this manufacture craft, thickness of electrode is by thin Film green tape thickness determines that film green tape can disposably be cast thicker degree, and electrode sections pattern is determined by groove shape, pass through The groove shape formed is etched substantially close to square, while slot wedge is also neat smooth so that the thickness of electrode finally made Both thick, side, electrode edge are neatly smooth again for cross sectional shape.
Embodiment
Embodiments of the present invention are elaborated below.It is emphasized that what the description below was merely exemplary, The scope being not intended to be limiting of the invention and its application.
In one embodiment, a kind of preparation method of electronic component electrode, comprises the following steps:
1) cast film green tape;
2) in the film green tape upper berth emulsion;
3) using the mask plate for defining electrode pattern, the emulsion is exposed using exposure machine;
4) emulsion is developed, obtains electrode pattern;
5) electrode trenches for making electrode are formed in the film green tape according to the electrode pattern;
6) emulsion being layered in the film green tape is removed;
7) electrode slurry is filled in the electrode trenches, makes electrode.
In a preferred embodiment, in step 1), the film green tape contains powder and for making the powder shaping Moulding material, the moulding material are soluble in the material of organic solvent, acid solution or alkaline solution.The powder can be Ceramics, ferrite or iron powder etc. can be used for the powder for making film green tape, and the moulding material can be formed for high polymer material Colloid.It is highly preferred that the film green tape thickness is more than 50 μm.Specifically it can also be carried out according to be made thickness of electrode requirement Curtain coating.
, can be by the way of spin coating in film green tape upper berth emulsion in step 2).Spin coating can make emulsion equal Even is laid in film green tape.The thickness that can be laid in by adjusting adjustment of rotational speed emulsion in film green tape.
In certain embodiments, the emulsion can be positivity or negative-working photoresist.The emulsion is negative Property glue when, the solidification of exposed portion colloid, be resistant to organic solvent, acidity or weakly alkaline solution immersion and insoluble or corrosion, Unexposed portion can be dissolved by the solution or erosion removal.When the photoresists are positive photoresist, exposed portion colloid decomposes, It can be dissolved by organic solvent, acidity or weakly alkaline solution or corrode and remove, unexposed portion can be resistant to organic solvent, acid Property or weakly alkaline solution immersion and insoluble or corrosion.
In a preferred embodiment, in step 3), the electrode pattern of the mask plate is positivity according to emulsion Either negativity and select printing opacity or light tight, if positivity then electrode pattern printing opacity, if negativity, then electrode pattern is not Printing opacity.It is preferred that electrode width defined in the electrode pattern is more than 50 μm, the optical source wavelength of the exposure machine transmitting is 365nm。
In a preferred embodiment, exposed good film green tape is positioned in developing machine in step 4), with development Liquid is dissolved and rinsed well to uncured part emulsion, and the pattern of the film green tape exposed is electricity Pole figure case.
In a preferred embodiment, formed in step 5) with the mode of etching in the film green tape for making electrode Electrode trenches, it is preferable that can dissolve or corrode the moulding material of the film green tape using etching liquid, but to solidification after Emulsion does not dissolve or corrosiveness.Preferably, the etching liquid is that can dissolve the colloid in the film green tape Organic solvent.
Preferably, the electrode trenches depth is more than 50 μm.In addition, electrode trenches depth also can be according to film green tape thickness It is adjusted.
In a preferred embodiment, in step 6), remaining emulsion is removed using liquid parting.The liquid parting is preferred For strong alkali solution.
In a preferred embodiment, in step 7), the electrode trenches can be filled using traditional half-tone screen printing method The electrode slurry, the electrode slurry can be the various electrode slurrys suitable for screen painting such as silver paste, copper slurry.
Typically, the electronic component is chip-type laminated electronic component.The film for completing electrode fabrication can be given birth to Band layer stackup swaging is sequentially completed the processes such as cutting, chamfering, dumping, sintering into green compact, then to the green compact, is finally completed electronics The making of component.
It is preferred that the electrode that a kind of embodiment is made, which is width, is more than 50 μm, thickness is more than 50 μm, and cross sectional shape is rectangle The electrode of (including rectangle generally).
The remarkable advantage of this method for making its electrode has:It is both thick to produce thickness, cross sectional shape and side, the electricity of flush edge Pole, while electrode thickness again, the less exciting coil of line spacing can also be produced.
It is further described below by way of more specifically embodiment.
Embodiment one
The paster ferrite power inductance thick electrode preparation method that a kind of metric system 2016 encapsulates, comprises the following steps:Curtain coating Ferrite film green tape, in film green tape upper berth emulsion, emulsion is exposed, emulsion is developed, Electrode trenches are etched, remove emulsion, electrode slurry is filled in electrode trenches, green tape lamination forms green compact, and green compact are carried out Cutting, chamfering, dumping, sintering, silver is stained with, silver ink firing, plating, is finally completed the making of device.
This implementation power inductance electrode pattern line width designs 200 μm, thick 90 μm of the design of line.
1st, cast film green tape:
11) ferrite powder is used, resin and organic solvent make slurry and be cast ferrite film on a pet film Green tape.
12) ferrite film green tape thickness is 90 μm ± 3 μm.
2nd, in ferrite film green tape upper berth emulsion:
21) absorption of ferrite film green tape is added into negative photosensitive emulsion on rotatable flat board in film green tape, The emulsion is water soluble light-sensitive emulsion.
22) adjustment rotary rpm is 2000 turns/min, and rotational time 0.5min, emulsion thickness control is 20 μm ±1μm。
3rd, emulsion is exposed:
31) mask plate electrode pattern line width designs 200 μm, and electrode pattern is light tight.
32) the ferrite film green tape for the emulsion that tiled is positioned in exposure machine and mask plate is covered in sense On X-ray emulsion X layer.
33) exposure light source wavelength 365nm, energy 150mj/cm2,30 seconds time for exposure.
4th, emulsion is developed:
41) the ferrite film green tape after exposure is put into the tank for fill water and developed, 30 seconds standing times.
42) emulsion for residual of developing is entered to clean up by the film green tape hydraulic giant being immersed in water.
5th, electrode trenches etch:Organic solvent is vertically rinsed to the ferrite film green tape developed, treated at electrode pattern Ferrite film green tape removes completely.
6th, emulsion is removed.
61) strong alkali solution, PH=12 are prepared.
62) ferrite film green tape is put into solution to be soaked, soak time 30 seconds.
63) the film green tape hydraulic giant soaked is cleaned up the emulsion remained in green tape.
7th, electrode slurry is filled in electrode trenches.
71) electrode slurry is the silver paste of 85% solid content.
72) half tone is made using 200 mesh grenadines, 70 μm of emulsion thickness.
72) silver paste is inserted in electrode trenches by screen painting using printing machine.
Present embodiment electrode pattern is made using traditional screen printing process, can only at most be accomplished by one-step print thickness 60 μm of limitation, it is necessary to print twice, and printing twice has contraposition and forbidden, and printing is easily spread out, and line width variation is big, causes inductance Accuracy of measurement difference qualification rate is low.Electrode burrs are more simultaneously, and electrode shape irregularly causes product Q values and other performance by shadow Ring.
Using Fabrication Technology of Electrode of the present invention, thickness of electrode can disposably do thickness, and electrode edge is smooth neat, line The wide line thickness uniformity is good, and the electrical qualification rate of product is high, and performance is highly improved.
Embodiment two
The paster iron powder power inductance thick electrode preparation method that a kind of metric system 2016 encapsulates, with embodiment one.Area It is not:Film green tape material is changed into iron powder from ferrite, and electrode pattern line width designs 250 μm, 80 μm of thickness, using this patent Fabrication Technology of Electrode, product saturation current and rated current are obviously improved compared with having than traditional screen printing process.
Embodiment three
The paster high current magnetic bead thick electrode preparation method that a kind of metric system 1608 encapsulates, with embodiment one.Difference It is:Film green tape material is changed into iron powder from ferrite, and electrode pattern line width designs 100 μm, 70 μm of thickness, using this patent electricity Pole manufacture craft can reduce the product caused by electrode print is spread out and stay side to reduce, and cut leakage problem, while can dash forward The limit of broken typography, 50 μ m thicks can not be made with Top electrode when printing 100 μm so that product is ensureing the same of impedance When, D.C. resistance is further reduced.
Above content is to combine specific/preferred embodiment further description made for the present invention, it is impossible to is recognized The specific implementation of the fixed present invention is confined to these explanations.For general technical staff of the technical field of the invention, Without departing from the inventive concept of the premise, it can also make some replacements or modification to the embodiment that these have been described, And these are substituted or variant should all be considered as belonging to protection scope of the present invention.

Claims (11)

1. a kind of preparation method of electronic component electrode, it is characterised in that comprise the following steps:
1) cast film green tape, the film green tape contain powder and the moulding material for making the powder shaping, the powder Expect to be soluble in the material of organic solvent, acid solution or alkaline solution for ceramics, ferrite or iron powder, the moulding material;
2) in the film green tape upper berth emulsion;
3) emulsion is exposed using the mask plate for defining electrode pattern;
4) emulsion is developed, obtains electrode pattern, wherein with developer solution to the uncured photosensitive breast of part Agent is dissolved and rinsed well, and the pattern of the film green tape exposed is electrode pattern;
5) electrode trenches for making electrode are formed in the film green tape according to the electrode pattern, wherein with etching Mode forms the electrode trenches for making electrode in the film green tape, can be dissolved or corroded described thin using etching liquid The moulding material of film green tape, but there is no dissolving or corrosiveness to the emulsion after solidification;
6) emulsion being layered in the film green tape is removed;
7) electrode slurry is filled in the electrode trenches, makes the electrode that Cross Section Morphology is determined by the electrode trenches shape.
2. the preparation method of electronic component electrode as claimed in claim 1, it is characterised in that the moulding material is high score Sub- material.
3. the preparation method of electronic component electrode as claimed in claim 2, it is characterised in that the film green tape thickness is big In 50 μm.
4. the preparation method of the electronic component electrode as described in any one of claims 1 to 3, it is characterised in that in step 2), The emulsion is positivity or negative-working photoresist;When the emulsion is negative photoresist, the solidification of exposed portion colloid, it is resistant to By the immersion of organic solvent, acidity or weakly alkaline solution, insoluble or corrosion, unexposed portion can be dissolved by the solution Or corrode and remove;When the photoresists are positive photoresist, exposed portion colloid decomposes, can be by organic solvent, acidity or weak base Property solution dissolving or corrosion and removes, unexposed portion can be resistant to the immersion of the solution and insoluble or corrode.
5. the preparation method of the electronic component electrode as described in any one of claims 1 to 3, it is characterised in that in step 3), According to emulsion, for positivity, either negativity selects printing opacity or light tight to the electrode pattern of the mask plate.
6. the preparation method of the electronic component electrode as described in any one of claims 1 to 3, it is characterised in that the etching Liquid is the organic solvent that can dissolve the colloid in the film green tape.
7. the preparation method of electronic component electrode as claimed in claim 6, it is characterised in that the electrode trenches depth is big In 50 μm.
8. the preparation method of the electronic component electrode as described in any one of claims 1 to 3, it is characterised in that in step 6), Remaining emulsion is removed using liquid parting.
9. the preparation method of the electronic component electrode as described in any one of claims 1 to 3, it is characterised in that in step 7), The electrode slurry is filled to the electrode trenches using half-tone screen printing method, the electrode slurry is the electricity suitable for screen painting Pole slurry.
10. the preparation method of the electronic component electrode as described in any one of claims 1 to 3, it is characterised in that the electronics Component is chip-type laminated electronic component.
11. the preparation method of the electronic component electrode as described in any one of claims 1 to 3, it is characterised in that the electricity made Pole is that width is more than 50 μm, and thickness is more than 50 μm, and cross sectional shape is the electrode of rectangle.
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CN106004074B (en) * 2016-05-24 2017-08-29 山东华菱电子股份有限公司 A kind of manufacture method of thermal printing head heating base plate
CN106783120B (en) * 2016-12-13 2018-03-27 深圳顺络电子股份有限公司 The preparation method and electronic component of a kind of electrodes of electronic components
CN110859026A (en) * 2018-08-24 2020-03-03 绵阳市奇帆科技有限公司 Manufacturing method for manufacturing LED circuit board electrode by printing process
CN112103059B (en) 2020-09-15 2022-02-22 横店集团东磁股份有限公司 Manufacturing method of thin film power inductor and thin film power inductor
CN114388260A (en) * 2021-12-21 2022-04-22 广东风华高新科技股份有限公司 Method for manufacturing electrode of component
CN115894083B (en) * 2022-07-29 2024-04-09 广东环波新材料有限责任公司 Preparation method and application of negative photosensitive type black electronic device

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JPH056832A (en) * 1991-06-28 1993-01-14 Toshiba Corp Manufacture of flat coil
JP4577479B2 (en) * 2003-04-15 2010-11-10 Tdk株式会社 Sheet forming method having different material parts and sheet having different material parts used for multilayer wiring board formation
CN101640174B (en) * 2008-07-31 2011-08-24 中芯国际集成电路制造(北京)有限公司 Method for etching semiconductor structure and method for forming metal interconnection layer
CN103325675A (en) * 2013-05-30 2013-09-25 深圳顺络电子股份有限公司 Method for manufacturing electronic element of narrow-line-width electrode
CN103395307B (en) * 2013-07-29 2015-09-09 电子科技大学 A kind of preparation method of internal electrode of chip-type electronic component
CN103606450B (en) * 2013-11-26 2016-03-09 深圳顺络电子股份有限公司 A kind of manufacture method of stack coil device

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