CN204298483U - The electric deposition device of HDI printed circuit board through hole - Google Patents
The electric deposition device of HDI printed circuit board through hole Download PDFInfo
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- CN204298483U CN204298483U CN201420665786.4U CN201420665786U CN204298483U CN 204298483 U CN204298483 U CN 204298483U CN 201420665786 U CN201420665786 U CN 201420665786U CN 204298483 U CN204298483 U CN 204298483U
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Abstract
The utility model relates to HDI printed circuit board through hole processing technique field, specifically, relate to a kind of electric deposition device of HDI printed circuit board through hole, comprise plating tank (1), the first anode (2), second anode (3) and negative electrode (14), the described first anode (2) is connected respectively by the anode terminal of wire with the first rectifier power source (4), the second rectifier power source (5) with second anode (3); Negative electrode (14) is connected by the cathode terminal of the wire on cathode fixture (15) with the first rectifier power source (4), the second rectifier power source (5), negative electrode (14) is with support-moving, by the electric current in above-mentioned layout adjustable two anode lines, realize the anodic current density in adjustment two plating loop, and then change the concentration of two kinds of metallic cations in plating solution; The distribution of current of cathode surface and the dispersive ability of plating solution is improved by changing cathode and anode spacing.
Description
Technical field
The utility model relates to HDI printed circuit board through hole processing technique field, in particular to a kind of electric deposition device of HDI printed circuit board through hole.
Background technology
Along with the consumer electronics product such as smart mobile phone, panel computer is constantly to the trend development of lighting, miniaturization, promote PCB constantly to higher, more densification layout future development.Through hole, blind hole, buried via hole three types is mainly contained in HDI plate.The diameter of through hole is probably 100-150 micron, and its degree of depth depends on the number of plies of HDI plate, generally more than hundreds of micron.Through hole generally adopts the method for machine drilling to be formed, and the metallization of through hole is the very important link of HDI plate manufacture, and it relates to the Technology such as electroless plating, plating.The electroplates in hole difficulty of HDI plate is very large, and its reason is that in HDI plate, radius-thickness ratio is larger.It is poor in hole internal mobility that this ratio crosses ambassador's plating solution, and plating solution is difficult to the depths entering through hole, and in electroplating process, hole wall easily produces bubble, and the center coating caused because main salt copper ion concentration is poor is partially thin still cannot be avoided.
Along with printed circuit board to high-density, high precision development, the processing requirement of the electroplates in hole copper is more and more higher, and this just needs copper plating bath to have good character, as good dispersive ability and covering power, current density range is wide, bath stability, be convenient to safeguard etc.In printed circuit board manufacture, the electroplates in hole adopts sulfate system mostly, and its main component is copper sulfate and sulfuric acid, utilizes the effect of electroplating additive (brightening agent, inhibitor and leveling agent etc.) each composition to realize the good result of Deep hole electroplating.
The electroplates in hole is the technical barrier of the medium-term and long-term existence of industry, the electroplates in hole exist defect mainly: through hole depths coating is thinner, there is boring floor crack road phenomenon, when voltage increasing, HDI plate are hit under various harsh conditions, defect exposes completely, cause the line broken circuit of plank, the work of specifying cannot be completed.What generally thickness of slab/aperture ratio is greater than 5:1 is called deep hole, and HDI plate is considerably beyond this ratio, and it is poor in hole internal mobility that this ratio crosses ambassador's plating solution, and hole wall easily produces bubble, and it is evenly very difficult that hole metallization reaches coating in whole hole.
Such as application number is the Chinese invention patent of 201110415307.4, it discloses a kind of electric deposition device, comprises negative electrode and anode, and anode comprises anode jacket, anode metal, positive plate, balancing weight and cover plate; Anode metal, positive plate, balancing weight are placed in anode jacket, and positive plate is placed on described anode metal, and balancing weight is placed on the limit end of described permeable positive plate, and cover plate is placed on anode jacket, and are provided with water inlet in the middle of cover plate.Anode jacket is made up of permeable organic fibre cloth, filter pulp, enhancing rigidity corrosion-resistant insulation skeleton, and balancing weight is made up of high specific gravity resistant metal, and cover plate is made up of corrosion-resistant insulation plate.Liquid stream in negative and positive polar region is made to there is not stagnant area in this application; Liquid flowing speed is large, and scouring effect is obvious.But the coating obtained by above-mentioned scheme is also insecure, thickness of coating is difficult to hold.
Such as application number is the Chinese invention patent of 201310162627.2 again, it discloses a kind of selective metal electric deposition device and application thereof, comprise reservoir for holding electrolytic solution and for the power supply be electrically connected corresponding with negative electrode and anode in electrodeposition process, ultrasonic-frequency power supply, the ultrasonic wave added jet apparatus supported by support, three-dimensional digital control platform, three-dimensional digital control platform comprises action actuating mechanism, support and computer; Reservoir is also provided with as electrolytic solution provides the peristaltic pump of spraying pressure and the control valve of control flow of electrolyte outward; The temperature controller keeping electrolyte temperature is provided with in reservoir; Electrolytic solution nozzle is had bottom ultrasonic wave added jet apparatus.This application improves settled layer hardness, compactness and electrodeposition rate in existing electro-deposition techniques, reduces coating unrelieved stress, and the alternative simultaneously realizing galvanic deposit region and the galvanic deposit realizing simple shape part are shaped.But reasonably cannot be controlled for the concentration of plating solution in this application, make the thickness of coating be difficult to hold.
Utility model content
In order to solve the above-mentioned technological deficiency that prior art exists, the purpose of this utility model is the electric deposition device providing a kind of HDI printed circuit board through hole, by the existing implementing process of through hole alloy plating, improve copper alloy electric deposition device, by arranging double anode, change two interpole gaps between anode and cathode-workpiece, adjust respectively, control two anodes current density separately, effectively control the temperature of plating solution simultaneously, pH value, the alloy layer be made up of binary metal is obtained in through-hole surfaces, improve the specific conductivity of coating, bonding force, thickness of coating is even, enhance productivity simultaneously.
The technology that HDI plate (High Density Interconnect) i.e. high density interconnecting board is PCB industry one of growing up in 20 end of the centurys is newer.
According to the electric deposition device of HDI printed circuit board through hole of the present utility model, comprise plating tank, the first anode, second anode and negative electrode, the described first anode and second anode are fixed in plating tank by support, the described first anode and second anode are double anode, and pass through the level attitude of bracket adjustment anode.Anode and anode, by bracket adjustment level attitude, realize the cathode and anode spacing changed in electrodeposition process between anode and cathode-workpiece.
Preferably, the described first anode, second anode are connected respectively by the anode terminal of wire with the first rectifier power source, the second rectifier power source.
In above-mentioned either a program preferably, between the anode terminal of the described first anode and the first rectifier power source, the first reometer and the first resistor are installed.
In above-mentioned either a program preferably, between the anode terminal of described second anode and the second rectifier power source, the second reometer and the second resistor are installed.
In above-mentioned either a program preferably, described negative electrode is placed on cathode fixture.When carrying out galvanic deposit by this electric deposition device to the through hole of HDI printed circuit board, by adjusting the electric current in the first resistor, the second resistor adjustable two anode lines; And by regulating bianode level attitude, change the spacing of double anode and cathode-workpiece, realize the anodic current density in adjustment two plating loop simultaneously.
In above-mentioned either a program preferably, described negative electrode is connected by the cathode terminal of the wire on cathode fixture with the first rectifier power source, the second rectifier power source.
In above-mentioned either a program preferably, the outside of described plating tank is provided with pump, pipeline and valve.
In above-mentioned either a program preferably, described plating tank, valve are connected by pipeline with pump.Electrolytic solution realizes circulation by pump, pipeline, valve; In addition, the opening degree by changing valve can change the circulation velocity of electrolytic solution.
In above-mentioned either a program preferably, well heater and temperature sensor is provided with in described plating tank.When the bath temperature in plating tank is lower than temperature needed for electrolysis, the plating solution in plating tank can be heated heater, carry out smoothly to make galvanic deposit.
In above-mentioned either a program preferably, the outside of described plating tank is also provided with temperature controlling system.The detector and temperature controlling system that detect bath temperature are installed in plating tank, ensure that the temperature of plating solution in through hole alloy plating process remains in preset range.
In above-mentioned either a program preferably, described plating tank is built with electrolytic solution, and electrolytic solution realizes cycle operation by pump, pipeline and valve.
In above-mentioned either a program preferably, the electroplate liquid formulation composition in described plating tank comprises main salt, complexing agent, the additive of binary metal, and the adjustment of its concentration is determined by hull trough test.
In above-mentioned either a program preferably, state additive described in and comprise brightening agent, dispersion agent, leveling agent.The effect of each composition of the brightening agent in electroplating additive, inhibitor and leveling agent is utilized to realize the good result of Deep hole electroplating.
In above-mentioned either a program preferably, described negative electrode, with support-moving, adjusts the electric current in the first anode and second anode circuit by the resistance sizes adjusting the first resistor and the second resistor, realizes the anodic current density in adjustment two plating loop.
In above-mentioned either a program preferably, in described plating tank, the concentration of metallic cation is adjusted by the change of the anodic current density in the first anode and second anode.
In sum, the electric deposition device of the HDI printed circuit board through hole in the utility model has the following advantages: anode is by fixed support adjusting position, realize the cathode and anode spacing changed in electrodeposition process between cathode-workpiece, adjusted the electric current in the first anode and second anode circuit by the resistance sizes adjusting the first resistor and the second resistor, realize the anodic current density in adjustment two plating loop; The detector and temperature controlling system that detect bath temperature are installed in plating tank, ensure that the temperature of plating solution in through hole alloy plating process remains in preset range.
Accompanying drawing explanation
Fig. 1 is the structural representation of a preferred embodiment of electric deposition device according to HDI printed circuit board through hole of the present utility model.
Attached number in the figure:
Plating tank 1, the first anode 2, second anode 3, the first rectifier power source 4, second rectifier power source 5, temperature sensor 6, pump 7, pipeline 8, valve 9, the first reometer 10, second reometer 11, first resistor 12, second resistor 13, negative electrode 14, negative electrode angle 15, well heater 16, temperature controlling system 17.
Embodiment
The following description is only exemplary and be not to limit the disclosure, application or purposes in essence.Be further described below in conjunction with the embodiment of Figure of description to the electric deposition device of the utility model HDI printed circuit board through hole.
As shown in Figure 1, according to the structural representation of a preferred embodiment of the electric deposition device of HDI printed circuit board through hole of the present utility model.According to the electric deposition device of HDI printed circuit board through hole of the present utility model, comprise plating tank 1, the first anode 2, second anode 3 and negative electrode 14, the described first anode 2 and second anode 3 are fixed in plating tank 1 by support, the described first anode 2 and second anode 3 are double anode, and pass through the level attitude of bracket adjustment anode.Anode 2 and anode 3 are fixed on bottom plating tank by fixed support and the portable slideway of level, and by the position of adjusting pole, change the first anode 2, cathode and anode spacing between second anode 3 and negative electrode 14 workpiece.
The present embodiment carries out for copper alloy, can certainly other metal alloy can be adopted as required to carry out galvanic deposit.In addition, the electrode group in the utility model is two, is respectively the first motor 2 and the second electrode 3, can certainly increases the number of electrode group as required, such as 3 groups, 4 groups, 5 groups etc.When electrode group quantity increases, be attached thereto other parts connect also increases, as rectifier power source, resistor, reometer etc. thereupon.
The electric deposition device of HDI printed circuit board through hole of the present utility model is in order to solve the above-mentioned technological deficiency of prior art existence, the object of the present invention is to provide a kind of electric deposition device of HDI printed circuit board through hole, by the existing implementing process of through hole alloy plating, improve copper alloy electric deposition device, by arranging double anode, change two interpole gaps between anode and cathode-workpiece, adjust respectively, control two anodes current density separately, effectively control the temperature of plating solution simultaneously, pH value, the alloy layer be made up of binary metal is obtained in through-hole surfaces, improve the specific conductivity of coating, bonding force, thickness of coating is even, enhance productivity simultaneously.
In the present embodiment, the described first anode 2, second anode 3 are connected respectively by the anode terminal of wire with the first rectifier power source 4, second rectifier power source 5.
In the present embodiment, between the described first anode 2 and the anode terminal of the first rectifier power source 4, first reometer 10 and the first resistor 12 is installed.
In the present embodiment, between described second anode 3 and the anode terminal of the second rectifier power source 5, second reometer 11 and the second resistor 13 is installed.
In the present embodiment, described negative electrode 14 is placed on support cathode fixture 15.When carrying out galvanic deposit by this electric deposition device to the through hole of HDI printed circuit board, negative electrode 1414 is connected with the cathode terminal of the first rectifier power source 4, second rectifier power source 5 by the wire of carrying jig., by adjusting the electric current in the first resistor 12, second resistor 13 adjustable two anode lines, and by regulating binode level attitude, changing itself and cathode-workpiece interpole gap, realizing the anodic current density in adjustment two plating loop simultaneously.
In the present embodiment, described support negative electrode 14 is connected with the cathode terminal of the first rectifier power source 4, second rectifier power source 5 by the wire on cathode fixture 15.
In the present embodiment, the outside of described plating tank 1 is provided with pump 7, pipeline 8 and valve 9.
In the present embodiment, described plating tank 1, valve 9 are connected by pipeline 8 with pump 7.Electrolytic solution realizes circulation by pump 7, pipeline 8, valve 9; In addition, the opening degree by changing valve 9 can change the circulation velocity of electrolytic solution.
In the present embodiment, well heater 16 and temperature sensor 6 is provided with in described plating tank 1.When the bath temperature in plating tank 1 is lower than temperature needed for electrolysis, this information feed back to temperature controlling system 17, is opened after signal received by following well heater 16 and is heated the plating solution in plating tank 1, carry out smoothly to make galvanic deposit by temperature sensor 6.
In the present embodiment, the outside of described plating tank 1 is also provided with temperature controlling system 17.The detector, temperature sensor 6 and the temperature controlling system 17 that detect bath temperature are installed in plating tank 1, ensure that the temperature of plating solution in through hole alloy plating process remains in preset range.
In the present embodiment, described plating tank 1 is built with electrolytic solution, and electrolytic solution realizes cycle operation by pump 7, pipeline 8 and valve 9.Electrolytic solution realizes circulation by pump 7, pipeline 8, valve 9; In addition, the opening degree by changing valve 9 can change the circulation velocity of electrolytic solution.
In the present embodiment, the electroplate liquid formulation composition in described plating tank 1 comprises main salt, complexing agent, the additive of binary metal, and the adjustment of its concentration is determined by hull trough test.
In the present embodiment, state additive described in and comprise brightening agent, dispersion agent, leveling agent.
In the present embodiment, described negative electrode 14 is connected with the cathode terminal of the first rectifier power source 4, second rectifier power source 5 by the wire on cathode fixture 15.The electric current in the first anode 2 and second anode 3 circuit is adjusted by the resistance sizes adjusting the first resistor 12 and the second resistor 13, and by regulating binode level attitude, change itself and cathode-workpiece interpole gap, realize the anodic current density in adjustment two plating loop simultaneously.
In the present embodiment, in described plating tank 1, the concentration of metallic cation is adjusted by the change of the anodic current density in the first anode 2 and second anode 3.
In the present embodiment, can change by above-mentioned improvement distribution of current and the solution dispersibility that cathode and anode spacing improves cathode surface.
In sum, the electric deposition device of the HDI printed circuit board through hole in the utility model has the following advantages: the first anode 2 and second anode 3, by bracket adjustment anode water mean place, change the first anode 2, cathode and anode spacing between second anode 3 and cathode-workpiece; Negative electrode 14 is connected with the cathode terminal of the first rectifier power source 4, second rectifier power source 5 by the wire on cathode fixture 15.Adjusted the electric current in the first anode 2 and second anode 3 circuit by the resistance sizes adjusting the first resistor 12 and the second resistor 13, the utility model is adjusted by the spacing and circuit resistance regulating electrode simultaneously and controls the anodic current densities in two plating loops; The detector and temperature controlling system 17 that detect bath temperature are installed in plating tank 1, ensure that the temperature of plating solution in through hole alloy plating process remains in preset range.
It will be apparent to those skilled in the art that the electric deposition device of HDI printed circuit board through hole of the present utility model comprises the arbitrary combination of each several part in this specification sheets.As space is limited and in order to make specification sheets simple and clear, these combinations are not introduced one by one in detail at this, but after having seen this specification sheets, the scope of the present utility model that the arbitrary combination of each several part be made up of this specification sheets is formed is self-evident.
Claims (10)
1. the electric deposition device of a HDI printed circuit board through hole, comprise plating tank (1), the first anode (2), second anode (3) and negative electrode (14), the first anode (2) and second anode (3) are fixed in plating tank (1) by support, it is characterized in that: the first anode (2) and second anode (3) are double anode, and pass through the level attitude of bracket adjustment anode.
2. the electric deposition device of HDI printed circuit board through hole as claimed in claim 1, is characterized in that: the first anode (2), second anode (3) are connected respectively by the anode terminal of wire with the first rectifier power source (4), the second rectifier power source (5).
3. the electric deposition device of HDI printed circuit board through hole as claimed in claim 2, is characterized in that: be provided with the first reometer (10) and the first resistor (12) between the anode terminal of the first anode (2) and the first rectifier power source (4).
4. the electric deposition device of HDI printed circuit board through hole as claimed in claim 2, is characterized in that: be provided with the second reometer (11) and the second resistor (13) between the anode terminal of second anode (3) and the second rectifier power source (5).
5. the electric deposition device of HDI printed circuit board through hole as claimed in claim 1, is characterized in that: negative electrode (14) is placed on cathode fixture (15).
6. the electric deposition device of HDI printed circuit board through hole as claimed in claim 5, is characterized in that: negative electrode (14) is connected by the cathode terminal of the wire on cathode fixture (15) with the first rectifier power source (4), the second rectifier power source (5).
7. the electric deposition device of HDI printed circuit board through hole as claimed in claim 1, is characterized in that: the outside of plating tank (1) is provided with pump (7), pipeline (8) and valve (9).
8. the electric deposition device of HDI printed circuit board through hole as claimed in claim 7, is characterized in that: plating tank (1), valve (9) are connected by pipeline (8) with pump (7).
9. the electric deposition device of HDI printed circuit board through hole as claimed in claim 1, is characterized in that: be provided with well heater (16) and temperature sensor (6) in plating tank (1).
10. the electric deposition device of the HDI printed circuit board through hole as described in claim 1 or 7, is characterized in that: the outside of plating tank (1) is also provided with temperature controlling system (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665786.4U CN204298483U (en) | 2014-11-10 | 2014-11-10 | The electric deposition device of HDI printed circuit board through hole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665786.4U CN204298483U (en) | 2014-11-10 | 2014-11-10 | The electric deposition device of HDI printed circuit board through hole |
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| CN204298483U true CN204298483U (en) | 2015-04-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313657A (en) * | 2014-11-10 | 2015-01-28 | 临安振有电子有限公司 | Electro-deposition device of through hole of HDI printed circuit board |
| CN110249079A (en) * | 2017-02-01 | 2019-09-17 | 东京毅力科创株式会社 | Electrolytic processing apparatus and electrolytic processing method |
-
2014
- 2014-11-10 CN CN201420665786.4U patent/CN204298483U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313657A (en) * | 2014-11-10 | 2015-01-28 | 临安振有电子有限公司 | Electro-deposition device of through hole of HDI printed circuit board |
| CN110249079A (en) * | 2017-02-01 | 2019-09-17 | 东京毅力科创株式会社 | Electrolytic processing apparatus and electrolytic processing method |
| CN110249079B (en) * | 2017-02-01 | 2022-03-11 | 东京毅力科创株式会社 | Electrolytic processing device and electrolytic processing method |
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Address after: 311301 Linglong Industrial Zone, Hangzhou, Zhejiang, Ling'an Patentee after: Zhejiang Zhenyou Electronics Co., Ltd. Address before: 311301 Linglong Industrial Zone, Hangzhou, Zhejiang, Ling'an Patentee before: LIN'AN ZHENYOU ELECTRONICS CO., LTD. |