CN115843153A - 5G circuit board PCB manufacturing method - Google Patents
5G circuit board PCB manufacturing method Download PDFInfo
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- CN115843153A CN115843153A CN202211427524.XA CN202211427524A CN115843153A CN 115843153 A CN115843153 A CN 115843153A CN 202211427524 A CN202211427524 A CN 202211427524A CN 115843153 A CN115843153 A CN 115843153A
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- 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
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0017—Etching of the substrate by chemical or physical means
- H05K3/0023—Etching of the substrate by chemical or physical means by exposure and development of a photosensitive insulating layer
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- 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
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
- H05K3/0047—Drilling of holes
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- 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
- H05K3/0058—Laminating printed circuit boards onto other substrates, e.g. metallic substrates
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- 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
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
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- 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
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/18—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using precipitation techniques to apply the conductive material
- H05K3/188—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using precipitation techniques to apply the conductive material by direct electroplating
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- 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
- H05K3/42—Plated through-holes or plated via connections
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Abstract
The application is a divisional application with application number 202110464268.0. The invention discloses a manufacturing method of a 5G circuit board PCB, which comprises the following steps: s1: cutting; s2: an inner layer circuit; s3: firstly, checking; s4: pressing a plate; s5: drilling; s6: copper deposition and plate surface electroplating; s7: electroplating the pattern; s9: plugging holes with resin; s10: grinding resin; s11: automatic optical inspection; s12: copper deposition and VCP electroplating; s13: transferring an outer layer circuit pattern; s14: pattern electroplating, namely plating a layer of tin on the circuit pattern to serve as an anti-etching protective layer of the circuit; s15: etching the outer layer to form an outer layer circuit pattern; s16: second inspection, namely passing through a reflow oven; s17: printing WF + two-dimensional code/character, and printing a layer of uniform photosensitive solder resist ink on the circuit board; s18: measuring impedance and lowoss; s19: and (4) post-treatment. The invention provides a method for manufacturing a 5G circuit board PCB, which is characterized in that a tinning process and an etching process are eliminated in step S7, two processes are optimized, and the problem of complicated process in the existing production technology is solved.
Description
The application is a divisional application, the application number of the original application is 202110464268.0, the application date is 2021, 04 and 28 days, and the invention is named as a production method of a 5G mainboard circuit board.
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of circuit boards, in particular to a 5G circuit board PCB manufacturing method.
[ background of the invention ]
With the rapid development of communication technology and the commercial popularization of 5G, as the most core material in the 5G industrial chain, the trend of the design and manufacture of electronic circuit boards (PCBs) toward high frequency and high speed development is not hindered, and the application of high frequency and high speed circuit boards (PCBs) in the 5G communication field is further deepened. The 5G brings opportunities to the PCB industry, simultaneously puts forward higher and severer requirements to the technology, and the indexes of the technology in the aspects of signal transmission speed, integration level, heat dissipation and multilayering are improved more than that of the technology in the 4G. The existing 5G circuit board PCB manufacturing method comprises the following steps: cutting, inner layer first inspection, pressing plate, drilling + head routing, copper deposition/plate surface electroplating, pattern electroplating (copper plating and tin plating), back drilling, etching, back drilling test, resin hole plugging, resin grinding, automatic optical inspection AOI, copper deposition/VCP, outer layer circuit, pattern electroplating (tin plating), outer layer corrosion plate), second inspection (passing through an IR furnace), WF + two-dimensional code, impedance + Low loss, high-voltage test, gold deposition, character, routing plate, ET, FQC, PK. The existing 5G circuit board PCB manufacturing technology still has the defect of complicated production flow, so that the production efficiency is difficult to improve, and the production cost is difficult to reduce.
[ summary of the invention ]
The invention solves the technical problem of complicated production flow existing in the existing 5G circuit board PCB manufacturing method, and provides the 5G circuit board PCB manufacturing method which is simple in structure and reasonable in design.
The invention is realized by the following technical scheme:
the manufacturing method of the 5G circuit board PCB comprises the following steps:
s1: cutting, namely cutting the copper-clad plate to form an inner-layer copper-clad plate;
s2: the inner layer circuit is formed by adhering a layer of photosensitive material on the surface copper foil of the inner layer copper-clad plate, and forming an inner layer circuit pattern after etching and developing;
s3: firstly, detecting the quality of the inner-layer copper-clad plate subjected to the step S2;
s4: the pressing plate is used for arranging the inner-layer copper-clad plate and the resin film which pass the quality detection according to a preset arrangement mode and then carrying out pressing treatment to form a laminated circuit board;
s5: drilling holes, namely drilling through holes in the laminated circuit board;
s6: copper deposition and board surface electroplating, wherein the copper deposition is to deposit a copper layer for conducting each layer in the laminated circuit board in the through hole by a copper deposition method so as to form a conducting hole in the through hole; the plate surface electroplating is to electroplate the laminated circuit board by adopting a full-plate electroplating method so as to form a conductive copper layer on the via hole and the plate surface of the laminated circuit board;
s7: carrying out pattern electroplating to enable the conductive copper layer to reach a preset thickness;
s8: back drilling, namely mechanically drilling to enable the via hole to reach a preset depth;
s9: resin hole plugging, namely plugging holes by using vacuum resin, wherein the conducting holes are divided into holes for resin hole plugging and holes for non-resin hole plugging;
s10: grinding resin, and grinding the redundant resin after the resin is plugged;
s11: automatic optical inspection, which is used for inspecting the filling degree of the plug hole;
s12: copper deposition and VCP electroplating, wherein holes plugged with resin are electroplated and filled, and the thickness of copper on the holes not plugged with resin and the plate surface is enabled to reach the thickness of a preset finished copper layer through VCP electroplating;
s13: transferring an outer layer circuit pattern; pasting a layer of dry film photosensitive material on the surface of the copper foil of the laminated circuit board, then carrying out alignment exposure through a laser direct imaging technology, and forming a circuit pattern after development;
s14: pattern electroplating, namely plating a layer of tin on the circuit pattern to serve as an anti-etching protective layer of the circuit;
s15: etching the outer layer to form an outer layer circuit pattern;
s16: second inspection, namely passing through a reflow oven;
s17: printing WF + two-dimensional code/character, and printing a layer of uniform photosensitive solder resist ink on the circuit board;
s18: measuring impedance and Lowloss, and measuring an impedance module and LowLoss in the production board;
s19: and (5) post-treatment.
In the method for manufacturing the 5G circuit board PCB, in step S4, a plastic rivet is used for stitching.
In the method for manufacturing the PCB of the 5G circuit board, in the step S5, the through hole is drilled at one time, a phenolic aldehyde base plate is adopted for production, a melamine base plate is used as a cover plate, and a pipe position hole is drilled in the cover plate.
In step S8, the method for manufacturing a 5G circuit board PCB further includes the following steps:
s801, mechanically drilling to enable a via hole to reach a preset depth;
s802, drilling off the through hole section without connection or transmission function;
s803, back drilling and then washing with high pressure water;
s804, leak-proof drilling is carried out on the aluminum sheet cover plate through full inspection by a hole counting machine.
In the method for manufacturing the 5G circuit board PCB, in step S10, the excess resin includes resin protruding from the hole after plugging and resin on the board surface.
In step S15, the method for manufacturing a 5G circuit board PCB further includes the following steps:
s1501: removing the film;
s1502: etching;
s1503: primary tin removal;
s1504: removing the dry film;
s1505: etching the part of copper under the dry film, which is not protected by tin;
s1506: and carrying out secondary tin stripping until the circuit below the tin is exposed, thus forming an outer layer circuit pattern.
In step S16, the method for manufacturing a 5G circuit board PCB further includes the following steps:
s1601, inspecting an outer layer circuit by using an optical inspection device;
and S1602, passing the circuit board passing the detection through a reflow oven.
In step S19, the method for manufacturing a 5G circuit board PCB further includes the following steps:
s1901: gold immersion;
s1902: routing boards;
S1903：ET；
S1904：FQC；
S1905：FQC。
in step S9, the method for manufacturing a 5G circuit board PCB further includes the following steps:
s901: adding a grinding plate before resin hole plugging;
s902: and roughening the copper surface.
Compared with the prior art, the invention has the following advantages:
the invention provides a method for manufacturing a 5G circuit board PCB, which is characterized in that a tinning process and an etching process are eliminated in step S7, two processes are optimized, and the problem of complicated process in the existing production technology is solved. The purposes of improving the production efficiency and reducing the production cost are achieved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a process flow diagram of the present invention.
[ detailed description ] embodiments
In order to make the technical solutions and the advantages of the technical problems solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
When embodiments of the present invention refer to the ordinal numbers "first", "second", etc., it should be understood that the terms are used for distinguishing only when they do express the ordinal order in context.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The manufacturing method of the 5G circuit board PCB comprises the following steps:
s1: cutting the copper-clad plate to form an inner-layer copper-clad plate; in the embodiment, the high-frequency high-speed copper-clad plate is adopted, and the surface of the copper-clad plate is cleaned and dried after cutting.
S2: the inner layer circuit is formed by adhering a layer of photosensitive material on the surface copper foil of the inner layer copper-clad plate, and forming an inner layer circuit pattern after etching and developing; in the step, a black film is adopted for carrying out contraposition exposure, and an inner layer circuit pattern is formed after etching and developing.
S3: firstly, detecting the quality of the inner-layer copper-clad plate subjected to the step S2;
s4: the pressing plate is used for arranging the inner-layer copper-clad plate and the resin film which pass the quality detection according to a preset arrangement mode and then carrying out pressing treatment to form a laminated circuit board;
s5: drilling holes, namely drilling through holes in the laminated circuit board;
s6: copper deposition and board surface electroplating, wherein the copper deposition is to deposit a copper layer for conducting each layer in the laminated circuit board in the through hole by a copper deposition method so as to form a conducting hole in the through hole; the plate surface electroplating is to electroplate the laminated circuit board by adopting a full-plate electroplating method so as to form a conductive copper layer on the via hole and the plate surface of the laminated circuit board;
s7: carrying out pattern electroplating to enable the conductive copper layer to reach a preset thickness; the copper plating is used for thickening the copper layer in the hole and the circuit, so that the quality of the plating layer is improved.
S8: back drilling, namely mechanically drilling to enable the via hole to reach a preset depth;
s9: resin hole plugging, wherein vacuum resin hole plugging is used, and the conducting hole is divided into a hole for resin hole plugging and a hole for non-resin hole plugging;
s10: grinding resin, and grinding the redundant resin after the resin is plugged;
s11: automatic optical inspection, which is used for inspecting the filling degree of the plug hole; in the embodiment, an automatic optical inspection machine special for resin hole plugging is adopted, and the hole plugging fullness is inspected by 100 percent;
s12: copper deposition and VCP electroplating, wherein holes plugged with resin are electroplated and filled, and the thickness of copper on the holes not plugged with resin and the plate surface is enabled to reach the thickness of a preset finished copper layer through VCP electroplating;
s13: transferring an outer layer circuit pattern; pasting a layer of dry film photosensitive material on the surface of the copper foil of the laminated circuit board, then carrying out contraposition exposure through a laser direct imaging technology, and forming a circuit pattern after development;
s14: pattern electroplating, namely plating a layer of tin on the circuit pattern to serve as an anti-etching protective layer of the circuit;
s15: etching the outer layer to form an outer layer circuit pattern;
s16: second inspection, namely passing through a reflow oven; the quality defects such as open short circuit, poor appearance and the like of the outer layer circuit are inspected by adopting optical inspection equipment, and the outer layer circuit passes through a reflow soldering furnace after the inspection is finished, so that the thermal stress can be reduced, and the dimensional stability of the high-frequency high-speed 5G main board circuit board is improved.
S17: printing WF + two-dimensional codes/characters in a jet printing mode, and printing a layer of uniform photosensitive solder resist ink on the circuit board; the manufacturing method of the 5G main board circuit board characters is changed from silk screen printing to jet printing, and the jet printing and the two-dimension code tracing information are simultaneously jet printed: the silk-screen character is manufactured by the screen printing method, after the PCB solder mask is solidified, the silk-screen character is processed by the screen printing plate, and finally the character is baked at high temperature again, wherein the silk-screen character is printed by the PCB before the solder mask is solidified at high temperature, and the silk-screen character is solidified at high temperature along with the solder mask after the silk-screen character is printed. A layer of uniform photosensitive solder resist ink is printed on the circuit board so as to achieve the purposes of solder resist and insulation, and ink-jet two-dimensional code tracing information and marking characters are made before the solder resist ink is cured at a high temperature.
S18: measuring impedance and Lowloss, and measuring an impedance module and LowLoss in the production board;
s19: and (5) post-treatment.
The invention provides a method for manufacturing a 5G circuit board PCB, which is characterized in that a tinning process and an etching process are eliminated in step S7, two processes are optimized, and the problem of complicated process in the existing production technology is solved. The purposes of improving the production efficiency and reducing the production cost are achieved. The back drill of the picture electronics reduces the etching process, can solve the bite caused by etching effectively-improve the back drill Stub value small, the original flow design is in outer circuit, pattern plating, back drill and etching, according to this flow, the Stub of the back drill is 2.67mil, while doing the etching, the exposed copper of back drill surface has no tin protection while etching, it is 0mil after being bitten and corroded while etching, cause the 5G signal to test and fail; through the adjustment flow, cancel the back drilling back etching process, can effectively solve because of the bite that the etching caused loses, can solve the bad problem of stub.
Further, as a preferred embodiment of the present invention, but not limited thereto, in step S4, a press-fitting process is performed using plastic rivets. The secondary outer layer design of the high-level circuit board of the main board requires 3P pieces, three PP pieces cannot use DIS fusion blocks, control is started from the contraposition of an inner layer dry film, and fusion + 10-head rivets are used for production; the pressing process adopts the plastic rivet to solve the problem of inner layer short circuit caused by rivet scraps generated in the traditional metal rivet riveting process, the length of the rivet is adjusted, the surface of a flowering surface is upward, and the problem of copper foil corrugation at a nailing position is solved
Further, as a preferred embodiment of the present solution but not limited thereto, in step S5, the through hole is drilled at one time, during which a phenolic pad is used for production, a melamine pad is used as a cover plate, and the pipe site hole is drilled in the cover plate. The melamine base plate is adopted as a bottom plate and a cover plate during drilling, a hole with the thickness of more than 1.4mm is used for covering plate production, the cover plate needs to drill a pipe position hole, and the problem of burr during drilling of a 5G high-frequency high-speed plate can be effectively solved.
Further, as a preferred embodiment of the present invention, but not limited thereto, in step S8, the method further includes the steps of:
s801, mechanically drilling to enable a via hole to reach a preset depth;
s802, drilling off the through hole section without connection or transmission function;
s803, back drilling and then washing with high pressure water;
s804, drilling holes in the aluminum sheet cover plate in a leak-proof manner through a full-inspection aluminum sheet cover plate of a multi-hole drilling machine.
By utilizing the depth control function of a mechanical drilling machine, a hole with a certain depth requirement is drilled by a drill cutter drilling tool with a larger diameter on a via hole, a through hole section which does not have any connection or transmission effect is drilled, the reflection, scattering, delay and the like of 5G signal transmission are avoided, the signal is distorted, double-sided back drilling is carried out, all high-pressure water washing is carried out after the back drilling, and leak-proof drilling is carried out on an aluminum sheet cover plate through a hole counting machine.
Further, as a preferred embodiment of the present invention, but not limited thereto, in step S10, the excess resin includes resin protruding from the hole-plugging rear orifice, and resin on the plate surface.
Further, as a preferred embodiment of the present invention, but not limited thereto, the method further includes, in step S15, the steps of:
s1501: removing the film;
s1502: etching;
s1503: primary tin removal;
s1504: removing the dry film;
s1505: etching the part of copper under the dry film, which is not protected by tin;
s1506: and carrying out secondary tin stripping until the circuit below the tin is exposed, thus forming an outer layer circuit pattern.
Further, as a preferred embodiment of the present invention, but not limited thereto, in step S16, the method further includes the steps of:
s1601, checking the outer layer circuit by an optical checking device;
and S1602, passing the circuit board passing the detection through a reflow oven.
Further, as a preferred embodiment of the present invention, but not limited thereto, in step S19, the method further includes the steps of:
s1901: gold immersion;
s1902: routing boards;
S1903：ET；
S1904：FQC；
S1905：PK。
further, as a preferred embodiment of the present invention, but not limited thereto, the method further includes, in step S9, the steps of:
s901: adding a grinding plate before plugging the holes with resin;
s902: and roughening the copper surface. Thus, the bonding force between the copper surface and the resin can be enhanced. The resin is not separated after 5 times of reflow soldering according to the design requirement of a 5G main board circuit board. Therefore, in order to increase the roughness of the copper surface, the main board model is added with the step S9 processing'
The working principle of the embodiment is as follows:
the invention provides a method for manufacturing a 5G circuit board PCB, which is characterized in that a tinning process and an etching process are eliminated in step S7, two processes are optimized, and the problem of complicated process in the existing production technology is solved. The purposes of improving the production efficiency and reducing the production cost are achieved.
The foregoing is illustrative of embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms set forth herein. Similar to the structure of the method, or several technical deductions or substitutions made on the premise of the conception of the present application, should be regarded as the protection scope of the present application.
Claims (4)
- The 1.5G circuit board PCB manufacturing method is characterized by comprising the following steps:s1: cutting the copper-clad plate to form an inner-layer copper-clad plate;s2: the inner layer circuit is formed by adhering a layer of photosensitive material on the surface copper foil of the inner layer copper-clad plate, and forming an inner layer circuit pattern after etching and developing;s3: firstly, detecting the quality of the inner-layer copper-clad plate subjected to the step S2;s4: the pressing plate is used for arranging the inner-layer copper-clad plate and the resin film which pass the quality detection according to a preset arrangement mode and then carrying out pressing treatment to form a laminated circuit board;s5: drilling holes, namely drilling through holes in the laminated circuit board;s6: copper deposition and board surface electroplating, wherein the copper deposition is to deposit a copper layer for conducting each layer in the laminated circuit board in the through hole by a copper deposition method so as to form a conducting hole in the through hole; the plate surface electroplating is to electroplate the laminated circuit board by adopting a full-plate electroplating method so as to form a conductive copper layer on the via hole and the plate surface of the laminated circuit board;s7: carrying out pattern electroplating to enable the conductive copper layer to reach a preset thickness;s8: back drilling, namely mechanically drilling to enable the via hole to reach a preset depth;s9: resin hole plugging, wherein vacuum resin hole plugging is used, and the conducting hole is divided into a hole for resin hole plugging and a hole for non-resin hole plugging;s10: grinding resin, and grinding the redundant resin after the resin is plugged;s11: automatic optical inspection, which is used for inspecting the filling degree of the plug hole;s12: copper deposition and VCP electroplating, wherein holes plugged with resin are electroplated and filled, and the thickness of copper on the holes not plugged with resin and the plate surface reaches the thickness of a preset finished copper layer through VCP electroplating;s13: transferring an outer layer circuit pattern; pasting a layer of dry film photosensitive material on the surface of the copper foil of the laminated circuit board, then carrying out alignment exposure through a laser direct imaging technology, and forming a circuit pattern after development;s14: pattern electroplating, namely plating a layer of tin on the circuit pattern to serve as an anti-etching protective layer of the circuit;s15: etching the outer layer to form an outer layer circuit pattern;s16: second inspection, namely passing through a reflow oven;s17: printing WF + two-dimensional code/character, and printing a layer of uniform photosensitive solder resist ink on the circuit board;s18: measuring impedance and Lowloss, and measuring an impedance module and LowLoss in the production board;s19: post-treatment;in step S4, a plastic rivet is adopted for pressing treatment;in step S15, the method further includes:s1501: removing the film;s1502: etching;s1503: primary tin removal;s1504: removing the dry film;s1505: etching the part of copper under the dry film, which is not protected by tin;s1506: removing tin for the second time until the circuit below the tin is exposed, and forming an outer layer circuit pattern;in step S16, the method further includes the steps of:s1601, inspecting an outer layer circuit by using an optical inspection device;s1602, passing the circuit board passing the detection through a reflow oven;in step S19, the method further includes:s1901: gold immersion;s1902: routing boards;S1903：ET；S1904：FQC；S1905：FQC；in step S9, the method further includes:s901: adding a grinding plate before resin hole plugging;s902: and roughening the copper surface.
- 2. The method for making a 5G circuit board PCB as recited in claim 1, wherein in step S5, the through holes are drilled at a time during which a phenolic pad is used for production, a melamine pad is used as a cover plate, and the cover plate is drilled with pipe position holes.
- 3. The method for manufacturing a 5G circuit board PCB according to claim 1, further comprising the following steps in step S8:s801, mechanically drilling to enable a via hole to reach a preset depth;s802, drilling off the through hole section without connection or transmission function;s803, back drilling and then washing with high pressure water;s804, leak-proof drilling is carried out on the aluminum sheet cover plate through full inspection by a hole counting machine.
- 4. The method for manufacturing a 5G circuit board PCB according to claim 1, wherein in step S10, the excess resin comprises resin which is convex after hole plugging and resin on the surface of the board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211427524.XA CN115843153A (en) | 2021-04-28 | 2021-04-28 | 5G circuit board PCB manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110464268.0A CN113163609B (en) | 2021-04-28 | 2021-04-28 | Production method of 5G mainboard circuit board |
| CN202211427524.XA CN115843153A (en) | 2021-04-28 | 2021-04-28 | 5G circuit board PCB manufacturing method |
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| CN202110464268.0A Division CN113163609B (en) | 2021-04-28 | 2021-04-28 | Production method of 5G mainboard circuit board |
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| CN202211427524.XA Pending CN115843153A (en) | 2021-04-28 | 2021-04-28 | 5G circuit board PCB manufacturing method |
| CN202211425737.9A Pending CN115767901A (en) | 2021-04-28 | 2021-04-28 | Manufacturing method of 5G mainboard circuit board |
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| CN113597113A (en) * | 2021-08-03 | 2021-11-02 | 广东依顿电子科技股份有限公司 | Manufacturing method of high-reflectivity white oil circuit board |
| CN114126201B (en) * | 2021-12-01 | 2023-07-28 | 广德东风电子有限公司 | PCB based on pulse VCP electroplating and preparation method thereof |
| CN114364148A (en) * | 2021-12-06 | 2022-04-15 | 龙南骏亚柔性智能科技有限公司 | Circuit board processing method for improving bonding force of character ink and solder resist ink of ink jet printer |
| CN114269071B (en) * | 2021-12-08 | 2024-04-26 | 江苏普诺威电子股份有限公司 | Through hole filling manufacturing process of multilayer board |
| CN114521071A (en) * | 2022-01-24 | 2022-05-20 | 珠海市凯诺微电子有限公司 | Production process of multilayer impedance flexible printed circuit board |
| CN114423186B (en) * | 2022-03-10 | 2022-06-24 | 广州添利电子科技有限公司 | Radar antenna PCB manufacturing process and antenna pattern manufacturing process and application thereof |
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| US6884944B1 (en) * | 1998-01-14 | 2005-04-26 | Mitsui Mining & Smelting Co., Ltd. | Multi-layer printed wiring boards having blind vias |
| CN105430916B (en) * | 2015-11-30 | 2018-11-20 | 广东依顿电子科技股份有限公司 | A kind of production method of back drill filling holes with resin wiring board |
| CN108513458B (en) * | 2018-03-30 | 2020-10-20 | 惠州市金百泽电路科技有限公司 | Method for processing super-thick 5G antenna PCB module |
| CN110572947A (en) * | 2019-09-23 | 2019-12-13 | 胜宏科技（惠州）股份有限公司 | method for replacing back drilling by controlled depth etching |
| CN112165782A (en) * | 2020-11-02 | 2021-01-01 | 胜华电子（惠阳）有限公司 | Resin hole plugging process for printed circuit board with high aspect ratio |
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| CN113163609B (en) | 2022-12-09 |
| CN113163609A (en) | 2021-07-23 |
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