CN112996283A - One-time synchronous resin hole plugging method for double-sided back drilling plate - Google Patents
One-time synchronous resin hole plugging method for double-sided back drilling plate Download PDFInfo
- Publication number
- CN112996283A CN112996283A CN202110155471.XA CN202110155471A CN112996283A CN 112996283 A CN112996283 A CN 112996283A CN 202110155471 A CN202110155471 A CN 202110155471A CN 112996283 A CN112996283 A CN 112996283A
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- Prior art keywords
- hole
- resin
- plate
- back drilling
- holes
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- 238000005553 drilling Methods 0.000 title claims abstract description 109
- 239000011347 resin Substances 0.000 title claims abstract description 80
- 229920005989 resin Polymers 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 51
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 23
- 238000011161 development Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims description 4
- 241001233242 Lontra Species 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 230000000740 bleeding effect Effects 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 230000002441 reversible effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- H05K3/42—Plated through-holes or plated via connections
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/095—Conductive through-holes or vias
- H05K2201/0959—Plated through-holes or plated blind vias filled with insulating material
Abstract
The invention discloses a one-time synchronous resin hole plugging method for a double-sided back drilling plate. The dry film ring can solve the problem of cavities at the corners of back drilling holes, and can inhibit ink from falling off when a plate is taken, so that the phenomena of incomplete hole plugging and hole opening depression are avoided, and the product quality is improved; the hole plugging aluminum sheet or the resin sheet windowing aperture can be regulated, the synchronous resin hole plugging of various holes such as large holes, small holes and double-sided back drilling holes can be realized at one time, and the production efficiency is improved on the premise of ensuring the hole plugging quality.
Description
Technical Field
The invention belongs to the technical field of printed circuit board manufacturing, and particularly relates to a one-time synchronous resin hole plugging method for a double-sided back drilling board.
Background
With the increasing development of high speed and high density of printed circuit boards, the process design of back drilling resin hole plugging is developed, redundant hole copper in a part of through holes on a board is drilled by the design, then resin is plugged, and finally copper can be plated on the surface without back drilling to form a disc center hole, so that the design has three benefits for a client: back drilling reduces high speed signal loss; the copper layer in the plug hole protective hole is not corroded, and the long-term reliability is good; after resin is filled, copper can be plated on the non-back drilling surface to form a welding disc, so that the density of welding devices is increased.
The common resin hole plugging processes include horizontal hole plugging, vertical vacuum hole plugging, horizontal vacuum hole plugging and the like, although the process principle is simpler, in the practical implementation process, the process is limited by factors such as aperture, aspect ratio, hole pattern influence, surface flatness and the like, the operation difficulty is higher, and the quality problems of incomplete hole plugging, hole opening depression, poor air bubbles in holes and the like are easy to occur.
When the double-sided back drilling plate is plugged with resin, the following conventional manufacturing processes are adopted:
(1) one-time hole plugging process on the same surface. When same face consent, back drilling hole have resin ink to follow the aperture toward the macropore stopper, the hole problem is produced very easily to back drilling hole's corner, and printing ink is not enough with back drilling hole's cohesion simultaneously, when getting the board, and printing ink easily falls down, appears the consent easily not full, the drill way is sunken, influences the product quality.
(2) A double-sided plug process. The process comprises the steps of plugging holes from the front side once, plugging all holes needing to be plugged without oil bleeding, and plugging the holes from the back side again by utilizing a certain vacuum environment.
(3) Two-time hole plugging and two-time baking and plate grinding process. The process comprises the steps of firstly plugging holes once from the front side, excluding back drilling holes needing to be plugged on the other side, enabling the other holes needing to be plugged to be in an oil bleeding state, and then baking and grinding a plate; and then plugging the hole from the back side once, plugging the hole on the back of the surface in an oil bleeding state, and then baking the second board and grinding the second board. The process needs two hole plugging and two plate baking and grinding, which affects the production efficiency, and particularly, the secondary plate grinding easily causes uneven copper on the surface of a produced plate, which affects the subsequent procedures.
(4) Two-time hole plugging and one-time baking and plate grinding process. The process comprises the steps of plugging holes from the front side once, not including back drilling holes needing to be plugged from the other side, plugging the holes needing to be plugged with the holes in an oil bleeding state from the back side, plugging the holes on the back side of the surface in the oil bleeding state, and then, baking and grinding the board. Two vacuum hole plugging machines are needed before and after hole plugging, the connection of the front operation and the back operation needs to be compact, oil pasting and oil carrying are easy to occur due to the influence of ink viscosity and the tension of ink and a screen plate, orifices are sunken, meanwhile, the binding force of the ink and holes is insufficient, and the ink is easy to fall down when the plate is taken, so that the product quality is influenced.
Disclosure of Invention
The invention aims to provide a method for synchronously plugging holes in a double-sided back drilling plate by resin at one time, which can solve the quality problems of resin hole plugging bubbles, orifice depression, incomplete hole plugging and the like, improve the resin hole plugging quality of the double-sided back drilling plate and improve the production efficiency of manufacturing the double-sided back drilling plate.
In order to achieve the purpose, the invention adopts the following technical scheme:
the one-time synchronous resin hole plugging method for the double-sided back drilling plate comprises the following steps:
drilling through holes on a production board, metalizing the through holes, and drilling back drilled holes on the front surface and the back surface through back drilling;
after film pasting pretreatment, dry film pasting, exposure and development, a concentric circular dry film ring is formed on the periphery of the front back drilling hole of the production plate;
from last to setting gradually down the consent otter board production board, backing plate and consent platform never paste the dry film back of the body drilling face and fill in resin printing ink.
Optionally, the diameter of the outer ring of the concentric circular dry film ring is 0.1-0.6 mm larger than the diameter of the hole of the back drilling hole backdrilling part of the production plate, and the diameter of the inner ring of the concentric circular dry film ring does not exceed the diameter of the hole of the back drilling hole non-backdrilling part of the production plate.
Optionally, the plug hole mesh plate is an aluminum mesh plate, and the aluminum mesh plate comprises a mesh frame, a mesh gauze and an aluminum sheet.
Optionally, the aluminum sheet is provided with all holes needing resin hole plugging corresponding to the production plate;
wherein, the back drilling hole phi which is plugged from the big hole to the small holebz1Corresponding aluminum sheet windowing through hole diameter DA1The diameter D of the back drilling part of the back drilling holebz1The relationship of (1) is: dA1≤Dbz1(ii) a Back drilled hole phi from small hole to big hole plugbz2Corresponding aluminum sheet windowing through hole diameter DA2The diameter D of the non-back-drilled part of the back-drilled holeT2The relationship of (1) is: dT2＜DA2≤DT2+0.30mm。
Optionally, the receptacle mesh plate is a resin sheet mesh plate, and the resin sheet mesh plate comprises a mesh frame, a mesh yarn and a resin sheet.
Optionally, the resin sheet is provided with all holes corresponding to the production board requiring resin plugging;
wherein, the back drilling hole phi which is plugged from the big hole to the small holebz1Corresponding resin sheet windowing through hole diameter DA1The diameter D of the back drilling part of the back drilling holebz1The relationship of (1) is: dA1≤Dbz1Back drilled hole phi from small hole to large hole plugbz2Corresponding resin sheet windowing through hole diameter DA2The diameter D of the non-back-drilled part of the back-drilled holeT2The relationship of (1) is: dT2＜DA2≤DT2+0.30mm。
Optionally, the resin ink is inserted from the back drilling surface of the non-dry film attached by scraping.
Optionally, after the inserting the resin ink from the non-dry film back drilling surface, the method further comprises:
baking for precuring, pre-grinding the surface of the plug hole, heating to completely cure the resin ink, and thoroughly grinding the surface of the plug hole; or directly baking to completely cure the resin ink and then grinding the surface of the plug hole.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a method for synchronously plugging holes in resin at one time on a double-sided back drilling plate. The dry film ring can solve the problem of cavities at the corners of back drilling holes, and can inhibit ink from falling off when a plate is taken, so that the phenomena of incomplete hole plugging and hole opening depression are avoided, and the product quality is improved;
the hole plugging aluminum sheet or the resin sheet windowing aperture can be regulated, the synchronous resin hole plugging of various holes such as large holes, small holes and double-sided back drilling holes can be realized at one time, and the production efficiency is improved on the premise of ensuring the hole plugging quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope covered by the contents disclosed in the present invention.
FIG. 1 is a cross-sectional view of a machining tool for a one-time synchronous resin hole plugging method for a double-sided back-drilling plate according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for synchronously plugging holes with resin in one step by using a double-sided back-drilling plate according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to fig. 1, which is a cross-sectional view of a processing tool for a method for synchronously plugging holes in resin at one time on a double-sided back-drilling plate according to the present embodiment.
The processing tool for realizing the one-time synchronous resin hole plugging method of the double-sided back drilling plate comprises a hole plugging screen plate 11, a production plate 12, a dry film 13, a base plate 14 and a hole plugging platform 15 which are sequentially arranged from top to bottom.
The production board 12 is a double-sided back-drilled board 12, the double-sided back-drilled board 12 being provided with a back-drilled hole 121 and a front-drilled hole 122. A concentric circular dry film ring 132 is arranged at the periphery of the front back drilling hole 122; the hole plugging mesh plate 11 is provided with a first mesh plate hole 111 located above the back drilling hole 121 on the back side and a second mesh plate hole 112 located above the back drilling hole 122 on the front side. The backing plate 14 has a first backing plate hole 141 below the back side drilled hole 121 and a second backing plate hole 142 below the front side drilled hole 122. The apertures of the first and second shim holes 141 and 142 are each larger than the back-drilled portion of the corresponding back-drilled holes 121 and 122.
Example one
Referring to fig. 2, the present embodiment provides a method for synchronously plugging holes in resin through a double-sided back drilling plate at one time, which includes the following steps:
s1, drilling through holes with the hole diameter of 0.20mm on the production board, metalizing the through holes, and drilling back drilling holes 121 on the back side and 122 on the front side through back drilling, wherein the hole diameters of the back drilling parts of the back drilling holes are 0.40 mm;
s2, forming a concentric dry film ring 132 on the periphery of the back drilling hole on one surface of the production plate through dry film pasting, exposure and development, wherein the diameter of the outer ring is 0.60mm, and the diameter of the inner ring is 0.15mm, and manufacturing the dry film stop point production plate;
s3, sequentially arranging the hole plugging screen plate 11, the dry film stop point production plate, the base plate 14 and the hole plugging platform 15 from top to bottom, and plugging resin ink into the back drilling surface which is not pasted with the dry film by using a hole plugging machine.
Optionally, after step S3, the method further includes:
s4, baking for precuring, pre-grinding the surface of the plug hole, heating to completely cure the resin ink, and completely grinding the surface of the plug hole; or directly baking to completely cure the resin ink and then grinding the surface of the plug hole.
Further, the jack panel 11 may be an aluminum sheet panel.
The aluminum sheet screen plate manufacturing method comprises the following steps:
(1) drilling corresponding windowing through holes on the aluminum sheet in a mechanical drilling mode according to hole positions and hole diameters of the back drilling hole 121 on the back side and the back drilling hole 122 on the front side of the production plate 12; wherein, the aperture of the aluminum sheet windowing through hole 111 corresponding to the back drilling hole 121 on the back side is 0.35mm, and the aperture of the aluminum sheet windowing through hole 112 corresponding to the back drilling hole 122 on the front side is 0.40 mm;
(2) combining a screen frame, screen gauze and an aluminum sheet to manufacture an aluminum sheet screen plate;
(3) drilling corresponding holes on the backing plate 14 according to the hole positions and the hole diameters on the production plate 12;
(4) fixing the aluminum sheet screen plate, the backing plate 14 and the dry film stop point production plate on the hole plugging platform 15 by using a clamp;
(5) resin ink is stuffed into the reverse back drilled hole 121 by scraping the reverse back drilled hole 121 of the production plate 12 through the first mesh plate hole 111, and the redundant ink flows out through the first backing plate hole 141; meanwhile, the front back drilled hole 122 of the production plate 12 is filled with resin ink through the second mesh hole 112 into the front back drilled hole 122, and the redundant ink flows out through the concentric circular dry film ring 132 and the second gasket hole 142.
Example two
Referring to fig. 2, the present embodiment provides a method for synchronously plugging holes in resin through a double-sided back drilling plate at one time, which includes the following steps:
s1, drilling through holes with the hole diameter of 0.25mm on the production board, metalizing the through holes, and performing double-sided back drilling on the production board to form a back drilling hole 121 on the back side and a back drilling hole 122 on the front side, wherein the hole diameter of the back drilling part of the back drilling hole is 0.45 mm;
s2, forming a concentric dry film ring 132 on the periphery of the back drilling hole on one surface of the production plate through dry film pasting, exposure and development, wherein the diameter of the outer ring is 0.60mm, and the diameter of the inner ring is 0.20mm, and manufacturing the dry film stop point production plate;
s3, sequentially arranging the plug hole screen plate 11, the dry film stop point production plate, the base plate 14 and the plug hole platform 15 from top to bottom, and plugging resin ink into the back drilling surface which is not pasted with the dry film by using a plug hole machine.
Optionally, after step S3, the method further includes:
s4, baking for precuring, pre-grinding the surface of the plug hole, heating to completely cure the resin ink, and completely grinding the surface of the plug hole; or directly baking to completely cure the resin ink and then grinding the surface of the plug hole.
Further, the jack pattern plate 11 may be a resin sheet mesh plate.
The method for manufacturing the resin sheet mesh plate comprises the following steps:
(1) drilling corresponding windowing through holes on the resin sheet in a mechanical drilling mode according to hole positions and hole diameters of the back side drilling holes 121 and the front side back drilling holes 122 on the production plate 12, wherein the hole diameter position of the resin sheet windowing through hole 111 corresponding to the back side drilling hole 121 is 0.30mm, and the hole diameter of the resin windowing through hole 112 corresponding to the front side back drilling hole 122 is 0.40 mm;
(2) combining a net frame, a net gauze and a resin sheet to manufacture a resin sheet net plate;
(3) drilling corresponding holes on the backing plate 14 according to the hole positions and the hole diameters on the production plate 12;
(4) fixing the resin sheet screen plate, the backing plate 14 and the dry film stop point production plate on the hole plugging platform 15 by using a clamp;
(5) resin ink is stuffed into the reverse back drilled hole 121 by scraping the reverse back drilled hole 121 of the production plate 12 through the first mesh plate hole 111, and the redundant ink flows out through the first backing plate hole 141; meanwhile, the front back drilled hole 122 of the production plate 12 is filled with resin ink through the second mesh hole 112 into the front back drilled hole 122, and the redundant ink flows out through the concentric circular dry film ring 132 and the second gasket hole 142.
In the two embodiments, the concentric dry film ring 132 can be manufactured on the periphery of the back drilling hole on one back drilling surface of the double-sided back drilling production plate, the hole plugging screen plate 11, the production plate 12, the backing plate 14 and the hole plugging platform 15 are sequentially arranged from top to bottom, and resin ink is plugged into the back drilling surface without sticking the dry film. This dry film ring can solve the hollow problem in corner of back drilling, simultaneously, when getting the board, can restrain printing ink and fall down, avoids appearing the consent not full and the drill way is sunken, promotes the product quality. The hole plugging aluminum sheet or the resin sheet windowing aperture can be regulated, the synchronous resin hole plugging of various holes such as large holes, small holes and double-sided back drilling holes can be realized at one time, and the production efficiency is improved on the premise of ensuring the hole plugging quality.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The method for synchronously plugging the holes in the double-sided back drilling plate by resin at one time is characterized by comprising the following steps:
drilling through holes on a production board, metalizing the through holes, and drilling back drilled holes on the front surface and the back surface through back drilling;
after film pasting pretreatment, dry film pasting, exposure and development, a concentric circular dry film ring is formed on the periphery of the front back drilling hole of the production plate;
from last to setting gradually down the consent otter board production board, backing plate and consent platform never paste the dry film back of the body drilling face and fill in resin printing ink.
2. The method for synchronously plugging resin holes on a double-sided back-drilled plate at one time according to claim 1, wherein the diameter of the outer ring of the concentric circular dry film ring is 0.1-0.6 mm larger than the diameter of the back-drilled hole of the production plate, and the diameter of the inner ring of the concentric circular dry film ring is not more than the diameter of the hole of the non-back-drilled hole of the production plate.
3. The method for synchronously plugging resin in holes of a double-sided back drilling plate at one time according to claim 1, wherein the hole plugging screen plate is an aluminum sheet screen plate, and the aluminum sheet screen plate comprises a screen frame, screen gauze and an aluminum sheet.
4. The method for synchronously plugging resin holes in one step by using a double-sided back-drilled plate as claimed in claim 3, wherein the aluminum sheet is provided with all holes corresponding to the production plate, which need to be plugged with resin;
wherein, the aperture of the aluminum sheet windowing through hole corresponding to the back drilling hole from the big hole to the small hole plug is less than or equal to the aperture of the back drilling part of the back drilling hole;
the aperture of the aluminum sheet windowing through hole corresponding to the back drilling hole from the small hole to the large hole plug is larger than the aperture of the non-back drilling part of the back drilling hole and is less than or equal to the sum of the aperture of the non-back drilling part of the back drilling hole and 0.30 mm.
5. The method for one-time synchronous resin hole plugging of a double-sided back drilling plate according to claim 1, wherein the hole plugging screen plate is a resin sheet screen plate, and the resin sheet screen plate comprises a screen frame, a screen gauze and a resin sheet.
6. The method for synchronously plugging resin holes in one step through a double-sided back-drilled plate according to claim 5, wherein the resin sheet is provided with all holes corresponding to the production plate, which need to be plugged with resin;
wherein, the aperture of the resin sheet windowing through hole corresponding to the back drilling hole from the big hole to the small hole plug is less than or equal to the aperture of the back drilling part of the back drilling hole;
the aperture of the resin sheet windowing through hole corresponding to the back drilling hole of the small-hole to large-hole plug is larger than the aperture of the non-back drilling part of the back drilling hole and is less than or equal to the sum of the aperture of the non-back drilling part of the back drilling hole and 0.30 mm.
7. The method for synchronously plugging resin holes on a double-sided back drilling plate at one time according to claim 1, wherein a scraping mode is adopted to plug resin ink from a non-dry film back drilling surface.
8. The method for one-time simultaneous resin via filling of double-sided backdrilling plate according to claim 1, further comprising, after said inserting resin ink from the unadhered dry film backdrilling surface:
baking for precuring, pre-grinding the surface of the plug hole, heating to completely cure the resin ink, and thoroughly grinding the surface of the plug hole; or directly baking to completely cure the resin ink and then grinding the surface of the plug hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110155471.XA CN112996283A (en) | 2021-02-04 | 2021-02-04 | One-time synchronous resin hole plugging method for double-sided back drilling plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110155471.XA CN112996283A (en) | 2021-02-04 | 2021-02-04 | One-time synchronous resin hole plugging method for double-sided back drilling plate |
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| CN112996283A true CN112996283A (en) | 2021-06-18 |
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| CN202110155471.XA Pending CN112996283A (en) | 2021-02-04 | 2021-02-04 | One-time synchronous resin hole plugging method for double-sided back drilling plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113423183A (en) * | 2021-07-01 | 2021-09-21 | 定颖电子（昆山）有限公司 | Manufacturing process of 5G communication high-frequency signal plate |
| CN114501812A (en) * | 2022-01-21 | 2022-05-13 | 深圳市景旺电子股份有限公司 | Hole plugging device and PCB resin hole plugging method |
| CN114916150A (en) * | 2022-04-18 | 2022-08-16 | 奥士康精密电路（惠州）有限公司 | Method for improving tailing of solder-proof screen printing of PCB |
| CN115003026A (en) * | 2022-04-29 | 2022-09-02 | 胜宏科技（惠州）股份有限公司 | Two-in-one manufacturing method of resin hole plugging aluminum sheet |
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| US20170265311A1 (en) * | 2016-03-14 | 2017-09-14 | Yariv Pinto | Method of filling vias with ink |
| CN110493960A (en) * | 2019-08-12 | 2019-11-22 | 珠海杰赛科技有限公司 | A kind of method and its machining tool of macroporous plate filling holes with resin |
| CN110831336A (en) * | 2019-11-11 | 2020-02-21 | 珠海崇达电路技术有限公司 | Resin hole plugging method for large-aperture back drilling hole |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20170265311A1 (en) * | 2016-03-14 | 2017-09-14 | Yariv Pinto | Method of filling vias with ink |
| CN110493960A (en) * | 2019-08-12 | 2019-11-22 | 珠海杰赛科技有限公司 | A kind of method and its machining tool of macroporous plate filling holes with resin |
| CN110831336A (en) * | 2019-11-11 | 2020-02-21 | 珠海崇达电路技术有限公司 | Resin hole plugging method for large-aperture back drilling hole |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113423183A (en) * | 2021-07-01 | 2021-09-21 | 定颖电子（昆山）有限公司 | Manufacturing process of 5G communication high-frequency signal plate |
| CN114501812A (en) * | 2022-01-21 | 2022-05-13 | 深圳市景旺电子股份有限公司 | Hole plugging device and PCB resin hole plugging method |
| CN114501812B (en) * | 2022-01-21 | 2024-02-09 | 深圳市景旺电子股份有限公司 | Hole plugging device and PCB resin hole plugging method |
| CN114916150A (en) * | 2022-04-18 | 2022-08-16 | 奥士康精密电路（惠州）有限公司 | Method for improving tailing of solder-proof screen printing of PCB |
| CN115003026A (en) * | 2022-04-29 | 2022-09-02 | 胜宏科技（惠州）股份有限公司 | Two-in-one manufacturing method of resin hole plugging aluminum sheet |
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Application publication date: 20210618 |