CA1075825A - Plaquette de circuit et methode de fabrication - Google Patents
Plaquette de circuit et methode de fabricationInfo
- Publication number
- CA1075825A CA1075825A CA274,360A CA274360A CA1075825A CA 1075825 A CA1075825 A CA 1075825A CA 274360 A CA274360 A CA 274360A CA 1075825 A CA1075825 A CA 1075825A
- Authority
- CA
- Canada
- Prior art keywords
- substrate
- pattern
- recessed
- circuit
- applying
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 title description 2
- 239000000758 substrate Substances 0.000 claims abstract description 45
- 238000007747 plating Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 22
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 238000007788 roughening Methods 0.000 claims description 8
- 230000000994 depressogenic effect Effects 0.000 claims description 7
- 239000003989 dielectric material Substances 0.000 claims description 7
- 229910000679 solder Inorganic materials 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000011253 protective coating Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 3
- 238000005488 sandblasting Methods 0.000 claims 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 15
- 229910052802 copper Inorganic materials 0.000 abstract description 14
- 239000010949 copper Substances 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 7
- 238000002360 preparation method Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 26
- 239000000243 solution Substances 0.000 description 16
- 238000002791 soaking Methods 0.000 description 14
- 238000007654 immersion Methods 0.000 description 7
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 235000013824 polyphenols Nutrition 0.000 description 4
- 239000004094 surface-active agent Substances 0.000 description 4
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 229940117975 chromium trioxide Drugs 0.000 description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N chromium trioxide Inorganic materials O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 2
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 229940032007 methylethyl ketone Drugs 0.000 description 2
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 description 1
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- -1 MacDermid 9042 Chemical compound 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- BGTFCAQCKWKTRL-YDEUACAXSA-N chembl1095986 Chemical compound C1[C@@H](N)[C@@H](O)[C@H](C)O[C@H]1O[C@@H]([C@H]1C(N[C@H](C2=CC(O)=CC(O[C@@H]3[C@H]([C@@H](O)[C@H](O)[C@@H](CO)O3)O)=C2C=2C(O)=CC=C(C=2)[C@@H](NC(=O)[C@@H]2NC(=O)[C@@H]3C=4C=C(C(=C(O)C=4)C)OC=4C(O)=CC=C(C=4)[C@@H](N)C(=O)N[C@@H](C(=O)N3)[C@H](O)C=3C=CC(O4)=CC=3)C(=O)N1)C(O)=O)=O)C(C=C1)=CC=C1OC1=C(O[C@@H]3[C@H]([C@H](O)[C@@H](O)[C@H](CO[C@@H]5[C@H]([C@@H](O)[C@H](O)[C@@H](C)O5)O)O3)O[C@@H]3[C@H]([C@@H](O)[C@H](O)[C@@H](CO)O3)O[C@@H]3[C@H]([C@H](O)[C@@H](CO)O3)O)C4=CC2=C1 BGTFCAQCKWKTRL-YDEUACAXSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910000159 nickel phosphate Inorganic materials 0.000 description 1
- JOCJYBPHESYFOK-UHFFFAOYSA-K nickel(3+);phosphate Chemical compound [Ni+3].[O-]P([O-])([O-])=O JOCJYBPHESYFOK-UHFFFAOYSA-K 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- HFHZKZSRXITVMK-UHFFFAOYSA-N oxyphenbutazone Chemical compound O=C1C(CCCC)C(=O)N(C=2C=CC=CC=2)N1C1=CC=C(O)C=C1 HFHZKZSRXITVMK-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000001119 stannous chloride Substances 0.000 description 1
- 235000011150 stannous chloride Nutrition 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
- H05K1/115—Via connections; Lands around holes or via connections
- H05K1/116—Lands, clearance holes or other lay-out details concerning the surrounding of a via
-
- 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
- H05K3/107—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 by filling grooves in the support with conductive material
-
- 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
- H05K2201/03—Conductive materials
- H05K2201/0332—Structure of the conductor
- H05K2201/0364—Conductor shape
- H05K2201/0376—Flush conductors, i.e. flush with the surface of the printed circuit
-
- 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
- H05K2201/09009—Substrate related
- H05K2201/09036—Recesses or grooves in insulating substrate
-
- 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
- H05K2201/09009—Substrate related
- H05K2201/09118—Moulded substrate
-
- 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
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09845—Stepped hole, via, edge, bump or conductor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/02—Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
- H05K2203/025—Abrading, e.g. grinding or sand blasting
-
- 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
- H05K3/181—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 electroless plating
- H05K3/182—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 electroless plating characterised by the patterning method
- H05K3/184—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 electroless plating characterised by the patterning method using masks
-
- 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
- H05K3/425—Plated through-holes or plated via connections characterised by the sequence of steps for plating the through-holes or via connections in relation to the conductive pattern
- H05K3/426—Plated through-holes or plated via connections characterised by the sequence of steps for plating the through-holes or via connections in relation to the conductive pattern initial plating of through-holes in substrates without metal
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Structure Of Printed Boards (AREA)
- Insulated Metal Substrates For Printed Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US67935276A | 1976-04-22 | 1976-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1075825A true CA1075825A (fr) | 1980-04-15 |
Family
ID=24726584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA274,360A Expired CA1075825A (fr) | 1976-04-22 | 1977-03-21 | Plaquette de circuit et methode de fabrication |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS52151866A (fr) |
| CA (1) | CA1075825A (fr) |
| DE (1) | DE2715875A1 (fr) |
| FR (1) | FR2349255A1 (fr) |
| IT (1) | IT1086737B (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4597177A (en) * | 1984-01-03 | 1986-07-01 | International Business Machines Corporation | Fabricating contacts for flexible module carriers |
| US4604799A (en) * | 1982-09-03 | 1986-08-12 | John Fluke Mfg. Co., Inc. | Method of making molded circuit board |
| US4985600A (en) * | 1988-09-30 | 1991-01-15 | Siemens Aktiengesellschaft | Printed circuit board having an injection molded substrate |
| US4996391A (en) * | 1988-09-30 | 1991-02-26 | Siemens Aktiengesellschaft | Printed circuit board having an injection molded substrate |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5823496A (ja) * | 1981-08-04 | 1983-02-12 | 日本電気株式会社 | プラスチツク筐体への電気回路パタ−ン形成方法 |
| JPS5854693A (ja) * | 1981-09-29 | 1983-03-31 | セイコー京葉工業株式会社 | 回路基板及び製造法 |
| JPS58186994A (ja) * | 1982-04-23 | 1983-11-01 | 三菱電機株式会社 | 印刷配線板の製造方法 |
| JPS58186993A (ja) * | 1982-04-23 | 1983-11-01 | 三菱電機株式会社 | 印刷配線板の製造方法 |
-
1977
- 1977-03-21 CA CA274,360A patent/CA1075825A/fr not_active Expired
- 1977-04-09 DE DE19772715875 patent/DE2715875A1/de active Pending
- 1977-04-13 IT IT4894677A patent/IT1086737B/it active
- 1977-04-19 JP JP4506777A patent/JPS52151866A/ja active Pending
- 1977-04-22 FR FR7712302A patent/FR2349255A1/fr not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4604799A (en) * | 1982-09-03 | 1986-08-12 | John Fluke Mfg. Co., Inc. | Method of making molded circuit board |
| US4597177A (en) * | 1984-01-03 | 1986-07-01 | International Business Machines Corporation | Fabricating contacts for flexible module carriers |
| US4985600A (en) * | 1988-09-30 | 1991-01-15 | Siemens Aktiengesellschaft | Printed circuit board having an injection molded substrate |
| US4996391A (en) * | 1988-09-30 | 1991-02-26 | Siemens Aktiengesellschaft | Printed circuit board having an injection molded substrate |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2349255A1 (fr) | 1977-11-18 |
| IT1086737B (it) | 1985-05-31 |
| DE2715875A1 (de) | 1977-11-10 |
| JPS52151866A (en) | 1977-12-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |