WO1999026458A1 - Carte de cablage imprime multicouche et son procede de fabrication - Google Patents
Carte de cablage imprime multicouche et son procede de fabrication Download PDFInfo
- Publication number
- WO1999026458A1 WO1999026458A1 PCT/JP1998/005200 JP9805200W WO9926458A1 WO 1999026458 A1 WO1999026458 A1 WO 1999026458A1 JP 9805200 W JP9805200 W JP 9805200W WO 9926458 A1 WO9926458 A1 WO 9926458A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hole
- pattern
- mounting
- core
- insulating layer
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 43
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- 238000007747 plating Methods 0.000 claims description 71
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 54
- 238000007772 electroless plating Methods 0.000 claims description 35
- 239000011889 copper foil Substances 0.000 claims description 33
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 239000002184 metal Substances 0.000 claims description 29
- 238000005530 etching Methods 0.000 claims description 25
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- 229910000679 solder Inorganic materials 0.000 description 21
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 19
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- 229910052763 palladium Inorganic materials 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
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- 230000035939 shock Effects 0.000 description 3
- 241000531908 Aramides Species 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
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- 229910052759 nickel Inorganic materials 0.000 description 2
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- 230000007261 regionalization Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000006061 abrasive grain Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003192 poly(bis maleimide) Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/403—Edge contacts; Windows or holes in the substrate having plural connections on the walls thereof
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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
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/05—Patterning and lithography; Masks; Details of resist
- H05K2203/0548—Masks
- H05K2203/0554—Metal used as mask for etching vias, e.g. by laser ablation
-
- 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
- H05K2203/13—Moulding and encapsulation; Deposition techniques; Protective layers
- H05K2203/1377—Protective layers
- H05K2203/1394—Covering open PTHs, e.g. by dry film resist or by metal disc
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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
- H05K3/0026—Etching of the substrate by chemical or physical means by laser ablation
- H05K3/0032—Etching of the substrate by chemical or physical means by laser ablation of organic insulating material
- H05K3/0035—Etching of the substrate by chemical or physical means by laser ablation of organic insulating material of blind holes, i.e. having a metal layer at the bottom
-
- 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
- H05K3/0073—Masks not provided for in groups H05K3/02 - H05K3/46, e.g. for photomechanical production of patterned surfaces
- H05K3/0082—Masks not provided for in groups H05K3/02 - H05K3/46, e.g. for photomechanical production of patterned surfaces characterised by the exposure method of radiation-sensitive 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
- H05K3/02—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
- H05K3/061—Etching masks
- H05K3/064—Photoresists
-
- 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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
- H05K3/4652—Adding a circuit layer by laminating a metal foil or a preformed metal foil pattern
Definitions
- Multilayer printed wiring board and method of manufacturing the same
- the present invention relates to a multilayer printed wiring board and a method for manufacturing the same, and more particularly, to a method for forming a conductive hole while reducing the thickness of an insulating layer, and further relates to protecting the wiring board against an etchant.
- FIG. 1 shows a method of manufacturing a conventional multilayer printed wiring board.
- a conductive hole 92 and a conductor pattern 93 are formed in an insulating substrate 91, and a plurality of the substrates 91 are laminated.
- FIG. 2 shows a conventional built-up method capable of forming a thin insulating layer.
- an insulating substrate 91 having a conduction hole 92 and a conductor pattern 93 is prepared, and an insulating layer 911 such as a pre-preda is laminated on the surface of the substrate 91.
- a conductive pattern 931 is formed on the surface of the insulating layer 911, and thereafter, the conductive hole 921 is formed in the insulating layer 911 by irradiating ultraviolet rays to perform image formation.
- a plating film 930 is formed in the conduction hole 921.
- the distance between the conductor patterns 93 and 931 is shortened, and high-speed signal transmission is possible.
- the resin when the conduction holes are formed, the resin may remain in the insulating layer 911, and conduction failure of the conduction holes 921 may occur. Therefore, it is necessary to form the conduction holes 921 large. However, in this case, it becomes an obstacle to narrow the pitch of the conductive holes.
- the exposed conductor pattern 93 in the mounting hole 94 may be eroded by the copper foil etchant. Therefore, the connectivity of the bonding wire to the bonding pad 942 exposed in the mounting hole 94 may be reduced.
- a first object of the present invention is to provide a multilayer printed wiring board capable of shortening the interval between layers of a pattern and easily forming minute conduction holes having excellent conduction reliability, and a method of manufacturing the same. is there.
- a second object of the present invention is to provide a multilayer electronic component mounting substrate having connection terminals having excellent corrosion resistance to an etching solution and excellent connection reliability to a bonding wire, and a method of manufacturing the same. Disclosure of the invention
- a method for manufacturing a multilayer printed wiring board First, a core substrate having a core pattern including a pad for covering the bottom opening of the conduction hole is prepared. Next, an insulating layer is laminated on the surface of the core substrate to form a laminate. Next, a surface pattern is formed on the surface of the laminate except for the region where the conduction hole is formed. Then, a laser beam is applied to the conductive hole forming region of the laminate to form a conductive hole whose bottom opening is covered by the pad. Next, the entire surface of the insulating layer including the inside of the conduction hole is covered with the thin plating film.
- the conductive film is coated on the inner wall of the conduction hole by using the thin plating film as a mask with the conduction hole opened, and then the mask is peeled off. Then, the thin plating film excluding the portion covered with the conductive film is removed.
- the most remarkable point in the present invention is to perform a build-up method of laminating an insulating layer on the surface of a core substrate, and to form a conduction hole reaching a pad in a laminated plate by irradiating a single laser beam. That is.
- the core pattern means one or more conductor patterns formed on the surface or inside of the core substrate.
- the surface pattern means a conductor pattern formed on the surface of the insulating layer.
- the pattern is a core pattern And / or surface pattern.
- the insulating layer is reinforced by the core substrate when the conduction holes and the surface pattern are formed. Therefore, the thickness of the insulating layer can be reduced.
- the middle part of the conduction hole forming region is preferably surrounded by the land. Since the land and the conductive coating covering the inner wall of the conduction hole are both made of metal, both have substantially the same thermal expansion coefficient. Therefore, peeling of the conductive film from the inner wall of the conduction hole due to thermal shock is suppressed.
- the land and the core pattern located in the same layer are insulated from each other.
- the lands located on the same layer and the core pattern may be electrically connected.
- the thin plating film preferably has a thickness of 0.01 to 5 m.
- the core substrate is preferably an insulating substrate having a mechanical strength capable of forming a pattern and a hole.
- the core substrate includes a resin substrate filled with glass fiber or glass cloth.
- the core substrate has a core pattern formed on at least one of the surface and the inside of the core substrate.
- the insulating layer preferably has a thickness of 30 to 150 / xm.
- the insulating layer may be formed on one side or both sides of the core substrate.
- the insulating layer is, for example, printed and coated with a pre-preda made by impregnating a resin into glass: 7 ivor or glass cloth and semi-curing, or laying a pre-preda sheet, and then curing the resin in the pre-preda. Alternatively, it can be formed.
- the conducting hole preferably has a diameter of 30 m to 300 z m.
- the thin plating film is preferably made of, for example, a chemical plating film made of a conductive material such as copper, tin plating, application of a solder palladium catalyst, or a laminated structure of these. Further, it is preferable that the conductive film is formed of an electroplating film made of a conductive material such as copper, a chemical plating film, or a laminated structure thereof.
- a multilayer printed wiring board according to a second aspect of the present invention includes: a core substrate having a core pattern; an insulating layer covering a surface of the core substrate; a surface pattern provided on a surface of the insulating layer; And a conduction hole for electrically connecting the core pattern to the core pattern.
- the core pattern includes a covering pad that covers a bottom opening of the conduction hole.
- a method for manufacturing a multilayer electronic component mounting substrate First, in the first step, a core substrate having a core pattern including a hole for mounting an electronic component, a connection terminal exposed along with the mounting hole, and a pad for covering a bottom opening of the conduction hole is prepared. Is done. Next, in a second step, an insulating layer is laminated on the surface of the core substrate in a state where the mounting holes and the connection terminals are exposed to form a laminate. In the third step, the surface of the connection terminal is covered with an electroless plating film. Next, in a fourth step, a metal layer is formed on the surface of the laminate.
- the conductive hole forming region of the laminate is irradiated with laser light to form a conductive hole whose bottom opening is covered by a pad.
- a conductive film is formed inside the conduction hole.
- the metal layer is etched to form a surface pattern. Then, after the third step and before the seventh step, the laminate is heated.
- connection terminals exposed together with the mounting holes are covered with an electroless plating film.
- the connection terminals are preferably made of copper.
- copper contained in the connection terminals may enter the electroless plating film.
- Copper is a substance that reduces corrosion resistance to an etchant.
- By heating the electroless plating film copper in the electroless plating film diffuses to the film surface. As a result, self-sintering of the electroless plating film is promoted, and a dense film structure is obtained. For this reason, the corrosion resistance of the electroless plating film to the etching solution used when forming the surface pattern (the seventh step) is improved. Therefore, the connection terminal exposed inside the mounting hole is not eroded by the etching solution. Therefore, the bonding strength of the bonding wire, the flip chip, the solder connection and the like to the connection terminal is improved.
- a method of manufacturing a multilayer electronic component mounting substrate First, in the first step, the holes for mounting electronic components and the connection terminals exposed together with the mounting holes A core substrate having a core pattern including: and a pad for covering a bottom opening of the conduction hole is prepared. Next, in a second step, an insulating layer is laminated on the surface of the core substrate in a state where the mounting holes and the connection terminals are exposed to form a laminate. In the third step, the surface of the connection terminal is covered with an electroless plating film. Next, in a fourth step, a metal layer is formed on the surface of the laminate. In the fifth step, a surface pattern is formed by etching the metal layer.
- a laser beam is applied to the conductive hole forming region of the laminated plate to form a conductive hole whose bottom opening is covered by the covering pad.
- a conductive film is formed inside the conduction hole. Then, after the third step and before the fifth step, the laminate is heated.
- the conduction hole is formed after the surface pattern is formed, and in the fourth embodiment, the surface pattern is formed after the conduction hole is formed.
- any of the second step and the third step may be performed first.
- the laminate may be heated after forming the electroless plating film and before forming the surface pattern.
- the electroless plating film is preferably formed by electroless Ni-Au plating or electroless Ni-Pd plating. This enables wire-to-bonding.
- a multilayer electronic component mounting substrate comprising: a mounting hole for mounting an electronic component; a core substrate having a core pattern; an insulating layer disposed on a surface of the core substrate; A surface pattern arranged on the layer, a conduction hole for electrically connecting the core pattern and the surface pattern, and a connection terminal exposed together with the mounting hole are provided.
- the connection terminals are covered with an electroless plating film formed by electroless Ni-Au plating or electroless Ni_Pd plating. Further, the bottom opening of the conduction hole is covered with a pad.
- a method of manufacturing a multilayer electronic component mounting substrate First, a core substrate having a core pattern and mounting holes is prepared. Next, a laminate is formed by laminating on the surface of a core substrate having an insulating layer corresponding to the mounting hole. A metal foil is coated on the surface of the laminate so as to cover the mounting holes. Overturned. Next, a conductive hole is formed in the laminate, and the inner wall of the conductive hole is covered with a conductive film. Together with the surface pattern patterning the metal foil by fi 1 Ukoto is formed, a lid portion for the covering part of the mounting hole and its periphery of the insulating layer is formed. Then, by removing a part of the insulating layer at the periphery of the mounting hole, the lid portion is removed, thereby exposing the mounting hole.
- an insulating layer is laminated on the surface of the core substrate by a built-up method, a conductive hole is formed while the mounting hole is covered with a metal foil, and the conductive hole is electrically conductive. Coating with a functional film and formation of a surface pattern. Therefore, a part of the core pattern such as the bonding pad exposed inside the mounting hole is not eroded by the plating solution and the etching solution. Also, the core pattern is not damaged when the conductive holes are formed.
- a multilayer electronic component mounting substrate includes a core substrate having a core pattern, an insulating layer disposed on a surface of the core substrate, and a surface pattern disposed on a surface of the insulating layer.
- the insulating layer has an opening corresponding to the mounting hole, and a recess formed on the periphery of the opening.
- FIG. 1 is an explanatory view showing a method for manufacturing a multilayer printed wiring board according to a first conventional example.
- FIG. 2 is an explanatory view illustrating a method for manufacturing a multilayer printed wiring board according to a second conventional example.
- FIG. 3 is an explanatory view illustrating a method for manufacturing a multilayer printed wiring board according to a second conventional example.
- FIG. 4 is a schematic sectional view of the multilayer printed wiring board according to the first embodiment of the present invention.
- FIG. 5 is a cross-sectional view of the core substrate of the multilayer printed wiring board of FIG.
- FIG. 6 is a cross-sectional view of a core substrate showing a method of forming a wall pattern.
- FIG. 7 is a perspective view of a core substrate having a wall pattern.
- FIG. 8 is a perspective view of a core substrate on which a mask for forming a core pattern is formed.
- FIG. 9 is a perspective view of a core substrate having a core pattern.
- FIG. 10 is a cross-sectional view of a core substrate having a core pattern.
- FIG. 11 is a plan view of a core substrate having a core pattern.
- FIGS. 12 to 18 are cross-sectional views illustrating a method for manufacturing a multilayer printed wiring board according to the first embodiment of the present invention.
- FIG. 19 is a schematic cross-sectional view of a multilayer electronic component mounting board according to a second embodiment of the present invention.
- FIG. 20 is a plan view of the multilayer electronic component mounting substrate of FIG.
- FIG. 21 is a plan view of a core substrate having a core pattern.
- FIG. 22 is a cross-sectional view of a core substrate showing a method of forming a wall pattern.
- FIG. 23 is a perspective view of a core substrate having a wall pattern.
- FIG. 24 is a perspective view of a core substrate having a core pattern.
- 25 to 31 are cross-sectional views illustrating a method for manufacturing a multilayer electronic component mounting board according to a second embodiment of the present invention.
- FIGS. 32 and 33 are cross-sectional views illustrating a method of manufacturing a multilayer electronic component mounting board according to a third embodiment of the present invention.
- FIG. 34 is a schematic sectional view of a multilayer electronic component mounting board according to a fourth embodiment of the present invention.
- 35 to 39 are cross-sectional views illustrating a method of manufacturing a multilayer electronic component mounting board according to a fourth embodiment of the present invention.
- FIG. 40 is a schematic sectional view of a multilayer electronic component mounting board according to a fifth embodiment of the present invention.
- FIGS. 41 to 46 are cross-sectional views illustrating a method for manufacturing a multilayer electronic component mounting board according to a fifth embodiment of the present invention.
- Figure 47 is an enlarged view of the area around the holes for mounting electronic components on the laminate.
- FIGS. 48 and 49 are cross-sectional views illustrating a method for manufacturing a multilayer electronic component mounting substrate according to a fifth embodiment of the present invention.
- the multilayer printed wiring board 50 includes a core substrate 21 having core patterns 12, 13, and 16, an insulating layer 22 laminated on the surface of the core substrate 21, and an insulating layer. It has a surface pattern 11 formed on 22 and conduction holes 30 and 31.
- the conduction hole 30 electrically connects the core pattern 13 and the surface pattern 11.
- the conduction hole 31 electrically connects the core pattern 12 and the surface pattern 11.
- the middle part of the conduction hole 30 is surrounded by a ring-shaped reinforcing land 110.
- the core patterns 13 and 11 have covering pads 101 and 111 that cover the bottom openings of the conduction holes 30 and 31, respectively.
- the surface pattern 11 has lands 120 and 121 surrounding the openings of the conduction holes 30 and 31.
- the surface pattern 11 has pads 125 for joining solder poles 63 for external connection.
- the multilayer printed wiring board 50 has a mounting hole 29 for mounting an electronic component at a substantially central portion thereof.
- a plurality of wall surface patterns 15 are provided in a strip shape.
- the wall pattern 15 is electrically connected to the core pad 13.
- bonding pads 1 16, 126, 1 17 electrically connected to the core pattern 12, the surface pattern 11, and the wall pattern 15 are provided.
- one opening of the mounting hole 29 is covered with a heat sink 59.
- the surface of multilayer printed wiring board 50 is covered with solder resist 25.
- an insulating substrate having insulating layers 211, 212 is prepared.
- the insulating layers 211 and 212 are preferably made of epoxy, polyimide, or bismaleimide triazine resin, preferably glass fiber or glass cloth. Is filled with a reinforcing material consisting of The copper foil 1 is adhered to the surfaces of the insulating layers 2 1 1 and 2 1 2.
- the copper foil 1 on one surface of the insulating layer 212 is patterned to form a core pattern 13. Thereafter, an opening 100 is formed in a predetermined mounting hole forming area 2900 of the remaining copper foil 1 of the insulating layers 211 and 212.
- the insulating layers 2 1 2 and 2 1 1 are bonded together, preferably using an adhesive (not shown) such as a pre-preda to obtain a core substrate 21.
- a mounting hole forming area 290 of the core substrate 21 is formed by using a means such as a router to form a mounting hole 29.
- the surface of the core substrate 21 including the inner wall of the mounting hole 29 is subjected to chemical plating and electric plating to cover the metal plating film 130.
- the surface of the core substrate 21 is coated with a resist film 71 made of a negative photosensitive resin.
- a mask 40 for forming a wall pattern is placed on the upper and lower surfaces of the core substrate 21.
- the mask 40 has a slit 41 for exposing a part of the resist film 71 (portion where no wall pattern is formed) covering the mounting hole 29.
- the core substrate 21 is irradiated with the scattered light 4.
- the portion of the resist film 71 where no wall pattern is formed and the edge of the mounting hole 29 are exposed.
- the mask 40 is removed, and the resist film 71 is developed to remove the resist film 71 corresponding to the portion where the wall surface pattern is not formed and the portion where the wall surface pad is not formed.
- the metal plating film 130 and the copper foil 1 exposed from the resist film 71 are removed by etching.
- an exposed surface 291 of the core substrate 21 is formed on the inner wall of the mounting hole 29, and a wall pattern 15 is formed between the exposed surfaces 291. .
- an exposed surface 292 between wall surface pads is formed at a peripheral portion of the mounting hole 29.
- the resist film 71 remaining on the surface of the core substrate 21 is removed with an alkaline solution. As a result, as shown in FIG. 7, the wall pattern 15 and the copper foil 1 are exposed.
- a mask 42 for pattern formation is placed on the surface of the core substrate 21.
- the mounting holes 29 are covered with a mask 42.
- the core substrate 2 Etch the copper foil 1 on the surface of 1.
- the wall pads 1 18, the bonding pads 1 16, 1 17, and the core patterns 12, 16 are formed on the surface of the core substrate 21.
- a ring-shaped reinforcing land 110 is formed around the periphery of the conduction hole forming region 300 on the surface of the core substrate 2, and a disc-shaped reinforcing land 110 is formed in the conduction hole forming region 310.
- a covering pad 1 1 1 is formed.
- an insulating layer 22 is formed on the surface of the core substrate 21 by preferably printing a pre-preda.
- the pre-preda is made by impregnating a glass cloth with a resin to make it semi-cured.
- the insulating layer 22 may be made of epoxy resin impregnated with an aramide fiber nonwoven fabric. Further, the insulating layer may be formed by printing a paste-like solder resist.
- an opening 229 for exposing the mounting hole 29 and the bonding pads 116 and 117 provided around the mounting hole 29 in the insulating layer 22 is formed.
- the thickness of the insulating layer 22 is preferably between 30 and 150 m.
- the thickness of the insulating layer 22 is less than 30 m, it may be difficult to ensure insulation between the core pattern and the surface pattern. If the thickness of the green layer exceeds 150 / m, the layer spacing between the core pattern and the surface pattern becomes large, which may hinder rapid transmission of electrical signals.
- the copper foil 1 is adhered to the surface of the insulating layer 22 to obtain a laminate 20.
- An opening 109 having an opening area approximately equal to that of the opening 229 of the insulating layer 22 is formed in the copper foil 1 in advance.
- a part of the copper foil 1 is removed by etching to form the surface pattern 11 and the bonding pad 126 on the surface of the insulating layer 22 and the conduction hole forming regions 300 and 3.
- Ring-shaped lands 120 and 122 are formed on the periphery of 10. Further, pads 125 for solder ball bonding are also formed. These lands 120 and 122 are electrically connected to the surface pattern 11.
- laser light 45 is applied to the conduction hole forming regions 300 and 310 in the laminated plate 20 using the laser oscillation device 46.
- the laser beam 45 is applied to the conduction hole forming regions 300 and 310 in a spot manner.
- the laser light 45 it is preferable to use a carbon dioxide gas laser having a relatively large output energy, an excimer laser having a small thermal effect on the substrate, or the like.
- Irradiation of the laser 45 burns and removes the insulating layer 22, or the insulating layer 22 and part of the core or core substrate 21, and sequentially forms holes inward.
- the laser beam 45 reaches the covering pads 101 and 111 covering the bottom openings of the holes formed in the conduction hole forming regions 300 and 310, these pads 101 and 111 Reflected by 1 1 1 Therefore, the progress of hole formation is stopped at the pads 101 and 111.
- conduction holes 30, 31 preferably having a diameter of 30 m to 300 m are formed. Note that excess resin in the insulating layer 22 may be removed by laser light irradiation.
- the diameter of the conduction holes 30 and 31 is less than 30 m, it becomes difficult for the plating solution to flow into the conduction holes 30 and 31 and the thin plating film 60 described later is not formed uniformly. There is a possibility that conduction between the upper and lower sides may be difficult. If the distance exceeds 300 m, it may be difficult to reduce the pitch of the conductive holes 30 and 31 and also to perform high-density mounting of the conductive holes 30 and 31 and the patterns 11 and 12.
- a palladium (Pd) catalyst is applied to the surface to form a thin plating film 60 composed of a plurality of layers.
- These thin coating films 60 preferably have a thickness of 0.01 to 5 / zm. If the thickness of the thin plating film 60 is less than 0.01 im, the thin plating film 60 may not be formed on all the inner wall surfaces of the conduction holes 30 and 31. If it exceeds 5 m, removal by etching after the formation of the conductive film may be difficult.
- a mask 43 having opening holes 430 and 431 corresponding to the conduction holes 30 and 31 is laminated on the surface of the laminate 20, Perform plating or chemical plating.
- a conductive coating 67 is formed on the inner walls of the conduction holes 30 and 31.
- the mask 43 is dissolved and removed with a solvent.
- a part of the thin plating film 60 that is, a portion not covered with the conductive film 67, is removed by soft etching so that the conductive film 67 remains.
- the surface of the laminate 20 is coated with a solder resist 25.
- the solder ball bonding pads 125, the bonding pads 126, 116, 117, and the wall pattern 15 are exposed without being covered with the solder resist 25.
- connection consisting of NiZAu plating is applied to the surface of solder pad bonding pad 1 25, bonding pad 1 26, 1 16 1, 1 17, wall pattern 15 and wall pad 1 18 A metal coating 61 is formed.
- solder balls 63 are bonded to the surfaces of the pads 125. Further, a heat sink 59 covering the mounting hole 29 is adhered to the lower surface of the laminate 20.
- the conduction holes 30 and 31 and the surface pattern 11 are formed as shown in FIGS. 13 and 14. You. At this time, the insulating layer 22 is reinforced by the core substrate 21. Therefore, the insulating layer 22 can sufficiently withstand the shock at the time of processing the conduction holes 30 and 31 and the surface patterns 11 and 19.
- the thickness of the insulating layer 22 is smaller than before.
- the layer spacing of the pattern can be shortened, and the signal transmission speed can be increased.
- the core substrate 21 on which the insulating layer 22 is laminated is relatively thick, the operation of the substrate 2 is easy and easy when forming the conductive holes 30 and 31 and the surface pattern 11. It is done reliably.
- the formation of the conduction holes 30 and 31 in the conduction hole formation regions 300 and 310 is performed until the laser beam 45 reaches the covering pads 101 and 111. Therefore, by arranging the covered pads 101 and 111 at different positions in the vertical direction, conductive holes 30 and 31 having different depths can be easily formed.
- the minute conduction holes 30 and 31 are formed by the irradiation of the laser beam 45. Also, there is no residual insulating material in the insulating layer 22. Therefore, high electrical connection reliability between the covering pads 101 and 11 and the conductive film 67 can be obtained.
- minute conduction holes can be reliably and easily formed.
- the pitch of the conductive holes can be narrowed and high-density mounting can be realized by miniaturizing the conductive holes.
- a new surface pattern and a new conduction hole can be further formed on the surface pattern 11. Therefore, a multilayer printed wiring board can be easily manufactured.
- the land 110 surrounds the periphery of the middle part of the conduction hole 30. Therefore, even if the conduction hole is relatively deep, the thin plating film 60 and the conductive film 67 are uniformly formed on the inner wall of the conduction hole 30, and the conduction reliability is improved. Further, since the reinforcing lands 110, the thin plating film 60, and the conductive film 67 are all made of metal, their thermal expansion coefficients are almost the same. Therefore, the reinforcing lands 110 suppress peeling of the conductive film 67 due to thermal shock.
- the insulating layer is preferably formed of epoxy resin impregnated with a fiber such as an aramide fiber nonwoven fabric. As a result, rigidity does not act on the insulating layer at the time of laser irradiation, and laser workability is improved.
- the wall pattern 15 is formed on the wall surface of the mounting hole 29 as shown in FIGS. 5 to 9, but instead of the wall pattern 15, a conduction hole is formed. Thus, conduction between the upper and lower sides of the core substrate 21 may be performed.
- an insulating layer may be formed on both sides of the core substrate 21 and a surface pattern may be formed on both insulating layers.
- the mounting hole 29 for mounting the electronic component on the core substrate may be a through hole or a concave non-through hole.
- a multilayer electronic component mounting board according to a second embodiment of the present invention will be described with reference to FIGS.
- the multilayer electronic component mounting board 55 of this example includes a mounting hole 29 for mounting an electronic component 82, a core board 21 having core patterns 12 and 13, and a core board 21.
- 21 has surface patterns 11 and 14 laminated on the insulating layers 22 and 23 disposed on the surface.
- the multilayer electronic component mounting board 55 has conduction holes 31, 32, 33 for electrically connecting the core patterns 12, 13 and the surface patterns 11, 14, and the inside of the mounting hole 29. And connection terminals 119, 122, 122, 141 exposed on the periphery thereof.
- connection terminals 12 1 and 122 are covered with an electroless plating film 5 formed by electroless Ni-Au plating or electroless Ni-Pd plating.
- a wall surface pattern 15 is formed on the inner wall of the conduction hole 29.
- the upper and lower ends of the wall pattern 15 are connected to wall pads 123 and 131 formed on the upper and lower surfaces of the core substrate 21.
- the wall pattern 15 and the wall pads 123 and 131 are also covered with an electroless plating film 5 formed by electroless Ni—Au plating or electroless Ni—Pd plating.
- the bottoms of the conducting holes 31, 32, 33 are covered with covering pads 129, 138, 139.
- the surface pattern 11 includes bonding pads 115 for bonding solder poles 63 for external connection.
- a heat sink 81 covering the mounting hole 29 is adhered to the lower surface of the multilayer electronic component mounting substrate 55.
- the surface of the multilayer electronic component mounting substrate 55 is covered with a solder resist 25.
- the core pattern 12 includes a covering pad 1 29 covering the opening at the bottom of the conduction hole 3 1, and a reinforcing land 1 2 8 surrounding a middle portion of the conduction hole 3 3. And connection terminals 1 2 1 and 1 2 2, and wall pads 1 2 3 connected to the connection terminals 1 2 2.
- an insulating substrate as a core substrate is prepared.
- copper foil 1 is attached to both sides of core substrate 21.
- a mounting hole 29 for forming a mounting hole is formed using a router.
- the surface of the core substrate 21 including the inner wall of the mounting hole 29 is coated with a metal plating film 130 by chemical copper plating and electrolytic copper plating.
- a resist film 7 is coated on the surface of the metal plating film 130.
- the core substrate 21 is irradiated with the scattered light 4 using the mask 40 having the slit 41.
- the mask 40 is removed, and the resist film 7 is selectively removed.
- the metal plating film 130 and the copper foil 1 exposed from the resist film 7 are removed by etching to form a wall surface pattern 15 and an exposed surface 292 as shown in FIG.
- the resist film 7 is removed with an alkaline solution to expose the copper foil 1.
- the copper foil 1 is etched using a mask 42 covering the mounting hole 29, and as shown in FIGS. 25 and 21, the connection end is formed on the upper surface of the core substrate 21.
- the core pattern 12 having the children 1 2 1 and 1 2 2, the wall pad 1 2 3, the covering pad 1 2 9, and the reinforcing land 1 2 8 is formed.
- the covering pad 1 29 is a disk-shaped pattern for covering the bottom opening of the conduction hole 31.
- the reinforcing lands 128 are ring-shaped patterns surrounding the side walls of the conduction holes 33.
- a core pattern 13 including disc-shaped covering pads 13 8 and 13 9 and wall pads 13 1 is formed on the lower surface of the core substrate 21, as shown in FIGS. 25 and 19, a core pattern 13 including disc-shaped covering pads 13 8 and 13 9 and wall pads 13 1 is formed. . Second step
- prepregs are laminated on both sides of the core substrate 21 to form insulating layers 22 and 23, thereby obtaining a laminated board 20.
- An opening 296 having an opening area larger than the mounting hole 29 is formed in advance in the pre-predger corresponding to the insulating layer 22 on the upper surface, and a mounting hole is formed in the pre-preparer corresponding to the insulating layer 23 on the lower surface
- An opening 297 having an opening area smaller than the hole 29 is formed.
- connection terminals 1 2 1 and 1 2 2 exposed inside the mounting hole 29 and the surface of the wall pattern 15 and the wall pads 1 2 3 and 1 3 1 Ni—Au plating or electroless Ni—Pd plating is performed to form an electroless plating film 5.
- Electroless Ni—Au plating refers to nickel-plated and gold-plated films formed by electroless plating.
- the electroless Ni—Pd plating means a nickel plating film and a palladium plating film formed by an electroless plating method.
- an adhesive sheet 24 made of a prepreg is laminated on the upper surface and the lower surface of the laminate 20, and the copper foil 1 is adhered on the adhesive sheet 24. At this time, the mounting hole 29 is covered with the copper foil 1.
- openings 10 are formed in the conduction hole forming regions 310, 320, and 330 of the copper foil 1 by etching.
- the conductive holes 30-33 are formed by irradiating the conductive hole forming regions 310, 320, and 330 of the laminated plate 20 with laser light 45. At this time, since the entire surface of the laminate 20 except for the conduction hole forming regions 310, 320, 330 is covered with the copper foil 1, the laminate 20 is damaged by the laser beam 45. do not do.
- the surface of the laminate 20 including the inner walls of the conduction holes 31 to 33 is subjected to chemical copper plating, palladium catalyst application and electrolytic copper plating, and An electrically conductive film 67 is formed.
- the strong land 128 surrounding the middle part of the relatively deep through-hole 33 promotes chemical deposition, and the conductive film 67 is uniformly formed on the inner wall of the through-hole 33. This is because the distance between the reinforcing land 128 and the surface pattern 11 and the distance between the reinforcing land 128 and the conductor pattern 13 are shortened, and the interval between the conductive members is shortened.
- the laminate 20 is heated at 150 for 60 minutes or more, or at 160 for 30 minutes or more.
- the copper foil 1 is etched to form a surface pattern 11 having connection terminals 1 1 9 and bonding pads 1 15 for solder pole bonding and a surface pattern having connection terminals 141.
- the pattern 14 is formed.
- the surface of the laminate 20 is coated with a solder resist 25.
- the surface of the bonding pad 1 1 5, connection terminal 1 1 9, 1 41, 1 2 1, 1 2 2, wall pad 1 23, 1 3 1, wall pattern 15 is made of nickel-plated nickel A metal coating 61 is formed.
- the solder pole 63 is joined to the surface of the joining pad 115 via the metal film 61.
- a metal heat sink 81 covering the mounting holes 29 is adhered to the lower surface of the laminate 20 with an adhesive 85 made of an insulating resin such as an epoxy resin.
- an adhesive 83 such as a silver paste.
- the multilayer electronic component mounting board 55 of this example is obtained.
- connection terminals 121 and 122 exposed inside the mounting hole 29 are heated after being covered with the electroless plating film 5.
- the copper of the connection terminal enters the electroless plating film 5 due to the heating, the copper diffuses to the surface of the film 5. Therefore, self-sintering of the electroless plating film 5 is promoted, and a dense film structure is obtained. For this reason, the corrosion resistance of the electroless plating film 5 against an etchant at the time of forming the surface pattern is improved. Therefore, the surfaces of the connection terminals 121, 122 exposed inside the mounting hole 29 are damaged. Not eroded. Therefore, the bonding strength of the bonding wire 84 to the connection terminal is improved.
- connection terminals 12 1 and 12 2 are covered with the electroless plating film 5, they have excellent corrosion resistance and do not require plating leads.
- the heating of the laminate 20 is preferably performed at a temperature of 150 to 250. Thereby, the corrosion resistance of the connection terminals 121 and 122 is enhanced. On the other hand, if it is less than 150, the diffusion of gold in the electroless plating film 5 becomes insufficient and the connection terminal may be corroded by the etching solution. If the temperature exceeds 250 "C, the thermal effect on the insulating layers 22 and 23 may be increased. Therefore, the heat treatment needs to be performed in a short time.
- wall pattern 15 and the wall pads 123, 131 may not be formed as necessary.
- a surface pattern may be provided only on one surface of the core substrate 21 via an insulating layer.
- T The second step and the third step may be performed first.
- the laminate 20 may be heated after the formation of the electroless plating film 5 and before the formation of the surface patterns 11 and 14.
- the fifth step is performed, and then the fourth step is performed.
- Heating of the laminate is performed before the fourth step, before or after the fifth step.
- the heating condition is 150 minutes for 60 minutes or more, or 160 minutes for 30 minutes or more.
- the electroless plating film 5 is heated before the surface patterns 11 and 14 are formed by etching. Therefore, connection terminals 1 1 9, 1 2 1, Erosion by the etching solutions 122 and 141 can be prevented.
- connection terminal can be polished by, for example, a method such as argon plasma or mechanical polishing of abrasive grains.
- the multilayer electronic component mounting board 56 of the fourth embodiment has the same structure as that of the second embodiment except that a core pattern 19 is also provided inside the core board 21 as shown in FIG. It has a similar configuration.
- the multilayer electronic component mounting board 56 has a core pattern 1
- Core substrate 21 having 2, 13, and 19; insulating layers 22 and 23 provided on the upper and lower surfaces of core substrate 21; and surface patterns 11 and 14 provided on the surfaces of insulating layers 22 and 23. It has connection terminals 119, 121, 122, and 141 exposed inside the hole 29 and at the periphery thereof.
- the core pattern 19 inside the core substrate 21 includes cover pads 198 and 199 that cover the bottom openings of the conduction holes 301 and 33. It is electrically connected to the connection terminal 122 provided on the surface of the core substrate 21 via the wall pattern 15 and the wall pad 123 (see FIG. 20).
- Surface pattern 11 includes a bonding pad 115 for bonding solder balls 63 for external connection.
- the core pattern 12 is a ring-shaped reinforcing land 128 surrounding the periphery of the middle part of the conduction hole 33, a covering pad 129 covering the bottom opening of the conduction hole 31, a connection terminal 121 and a wall pattern 15. And a connection terminal 122 (see FIG. 20). Note that the multilayer electronic component mounting board of the fourth embodiment has the same planar structure as that of the second embodiment.
- connection terminals 121 and 122 are electrically connected to the electronic component 82 via a bonding wire 84.
- the surfaces of the connection terminals 1 2 1 and 122 are formed by electroless plating film 5 formed by electroless Ni-Au plating or electroless Ni-Pd plating. Coated.
- a core pattern 19 is formed between the insulating layers 210, and the core patterns 12, 13 and the core substrate 21 are formed as in the second embodiment.
- the core substrate 21 is irradiated with a laser beam to form a conduction hole 301.
- the inner wall of the conduction hole 301 is covered with a conductive film 67.
- the upper and lower surfaces of the core substrate 21 are covered with insulating layers 22, 23 with the mounting holes 29 of the core substrate 21 opened.
- the copper foil 1 is bonded to the surfaces of the insulating layers 22 and 23 via an adhesive sheet 24 made of a prepreg. Note that the adhesive sheet 24 and the copper foil 1 are previously formed with an opening 10 for exposing the mounting hole 29 before lamination. Thereby, the laminated board 20 is formed.
- connection terminals 1 2 1 and 1 2 2 exposed inside the mounting holes 29 and the surface of the wall pattern 1 5 and the wall pads 1 2 3 and 1 3 1 Ni—Au plating or electroless Ni—Pd plating is performed to form an electroless plating film 5.
- the laminate is heated for 150 minutes or more for 60 minutes or at 160 ° C. for 30 minutes or more.
- the copper foil 1 is etched to form surface patterns 11 and 14.
- the laminated plate 20 is irradiated with a laser beam to form holes 31 to 33 for conduction.
- the surface of the core substrate 21 including the inner wall of the mounting hole 29 is coated with the chemical copper plating film 8.
- the entire surface of the laminate 20 except for the conduction holes 31 to 33 is covered with a mask, and the inner wall of the conduction holes 31 to 33 is coated with a conductive film 67 by electroplating. Form.
- the mask is removed, and the chemical copper plating film 8 is removed by soft etching or the like.
- the formation of the solder resist 25, the bonding of the heat sink 81, and the bonding of the solder pole 63 are performed to obtain a multilayer electronic component mounting substrate 56.
- the operation and effect of the present embodiment will be described.
- the surface patterns 11 and 14 are formed by etching the copper foil. You. Therefore, corrosion of the connection terminal due to the etching solution is prevented.
- the surface patterns 11 and 14 are formed by etching the copper foil 1.
- the surface patterns 11 and 14 may be formed by coating the entire surface of the laminate 20 with a copper plating film and etching the copper plating film.
- a multilayer electronic component mounting board according to a fifth embodiment of the present invention will be described with reference to FIGS.
- the multilayer electronic component mounting board 56 of the fifth embodiment has concave portions in the openings 296 and 297 of the insulating layers 22 and 23 provided on the upper and lower surfaces of the core board 21. It has cutting traces 296 a and 297 a of the insulating layers 22 and 23 that are depressed. These cutting traces 296a and 296b are traces formed when the lids 2 18 and 219 provided to protect the pattern inside the mounting holes 29 are removed.
- a core substrate 21 having core patterns 12 and 13 is formed as in the first embodiment.
- the insulating layers 22 and 23 are formed on the upper and lower surfaces of the core substrate 21 to obtain a laminate 20.
- An opening 296 having an opening area larger than the mounting hole 29 is previously formed in the insulating layer 22, and an opening 297 having an opening area smaller than the mounting hole 29 in the insulating layer 23. are formed in advance.
- the copper foil 1 is attached to the upper and lower surfaces of the laminate 20 via an adhesive sheet.
- the adhesive sheet is omitted in the drawings.
- the mounting hole 29 is covered with the copper foil 1.
- an etching process using a mask is performed to form opening holes 10 in the conduction hole forming regions 310, 320, and 330 of the copper foil 1.
- a laser beam 45 is applied to the conduction hole forming region of the laminated plate 20 using a laser-oscillator 46 to have a diameter of 30 to 300 m as shown in FIG.
- the conductive holes 31 to 33 are formed.
- the surface of the laminate 20 including the inner walls of the conduction holes 31 to 33 was subjected to a chemical copper plating palladium catalyst application and an electrolytic copper plating to form a conductive coating 67. Form.
- the copper foil 1 and the conductive film 67 are patterned to form surface patterns 11 and 14.
- the surface pattern 11 includes a bonding pad 115 and a connection terminal 119.
- the mounting holes 29 and the lids 2 18, 219 covering the periphery thereof are formed by patterning the copper foil 1 and the conductive film 67.
- the insulating layers 2 2 and 2 3 around the mounting holes 29 are located outside the lids 2 18 and 2 19. Is removed by a counterbore. As a result, the lids 2 18 and 2 19 are removed along with the portions 2 2 a and 23 a of the insulating layers 22 and 23 around the mounting holes 29 and the mounting holes 29 are exposed. Is done. At this time, the insulating layers 22 and 23 have concave cutting marks 296a and 297a exposed on the inner side of the mounting hole 29.
- the surface patterns 11 and 14 of the laminated board 20 are formed with the mounting holes 29 covered with the copper foil 1. Therefore, when the surface patterns 11 and 14 are formed, the etching liquid does not enter the inside of the mounting hole 29. Therefore, damage to the mounting hole 29 having a complicated pattern is prevented.
- the lids 218 and 219 are removed together with portions 22a and 23a of the insulating layers 22 and 23 on the periphery of the mounting hole 29. Therefore, the lids 2 1 8 and 2 19 do not remain on the periphery of the mounting hole 29. Also, since no burrs are generated on the copper foil 1, high connection reliability between the bonding pads 121 and 122 and the bonding wires is ensured.
- the surface patterns 11 and 14 are formed outside the openings 269 and 297 of the insulating layers 22 and 23. Therefore, a portion 22a, 22b of the insulating layers 22, 23 around the mounting hole 29 outside the wall surface 295 of the mounting hole 29 of the core substrate 21 without damaging the surface patterns 11 and 14. And lids 218, 219 are removed. In this case, since the insulating layers 22 and 23 are supported by the core substrate 21, the cutting operation is performed while maintaining a certain level of mechanical strength.
- an ordinary build-up method in which a conduction hole is formed by irradiating ultraviolet rays and developing without using a laser may be applied.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98954739A EP1043921A4 (en) | 1997-11-19 | 1998-11-19 | MULTILAYER PRINTED PCB AND METHOD FOR THE PRODUCTION THEREOF |
US09/554,481 US6455783B1 (en) | 1997-11-19 | 1998-11-19 | Multilayer printed wiring board and method for manufacturing the same |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/336378 | 1997-11-19 | ||
JP33637897A JP3296273B2 (ja) | 1997-11-19 | 1997-11-19 | 多層プリント配線板及びその製造方法 |
JP33787097A JP3296274B2 (ja) | 1997-11-20 | 1997-11-20 | 多層電子部品搭載用基板及びその製造方法 |
JP9/337870 | 1997-11-20 | ||
JP9/338086 | 1997-11-21 | ||
JP33808697A JP3334584B2 (ja) | 1997-11-21 | 1997-11-21 | 多層電子部品搭載用基板及びその製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999026458A1 true WO1999026458A1 (fr) | 1999-05-27 |
Family
ID=27340778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/005200 WO1999026458A1 (fr) | 1997-11-19 | 1998-11-19 | Carte de cablage imprime multicouche et son procede de fabrication |
Country Status (4)
Country | Link |
---|---|
US (1) | US6455783B1 (ja) |
EP (1) | EP1043921A4 (ja) |
KR (2) | KR100379119B1 (ja) |
WO (1) | WO1999026458A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1327499C (zh) * | 2001-12-18 | 2007-07-18 | Lg电子株式会社 | 制造半导体组件的方法 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030088195A1 (en) * | 2001-11-02 | 2003-05-08 | Vardi Gil M | Guidewire having measurement indicia |
JP2006222386A (ja) * | 2005-02-14 | 2006-08-24 | Toshiba Corp | プリント配線板、プリント回路基板、電子機器 |
WO2007016642A2 (en) * | 2005-07-29 | 2007-02-08 | Foster-Miller, Inc. | Dual function composite system and method of making same |
JP4171499B2 (ja) * | 2006-04-10 | 2008-10-22 | 日立電線株式会社 | 電子装置用基板およびその製造方法、並びに電子装置およびその製造方法 |
US20110024898A1 (en) * | 2009-07-31 | 2011-02-03 | Ati Technologies Ulc | Method of manufacturing substrates having asymmetric buildup layers |
KR101097628B1 (ko) * | 2010-06-21 | 2011-12-22 | 삼성전기주식회사 | 인쇄회로기판 및 이의 제조방법 |
KR101374770B1 (ko) * | 2013-11-22 | 2014-03-17 | 실리콘밸리(주) | 금속 박판의 적층을 이용한 반도체 검사 패드 및 제조방법 |
JP6862087B2 (ja) | 2015-12-11 | 2021-04-21 | 株式会社アムコー・テクノロジー・ジャパン | 配線基板、配線基板を有する半導体パッケージ、およびその製造方法 |
CN110726765B (zh) * | 2019-12-17 | 2020-05-05 | 深圳市刷新智能电子有限公司 | 一种石墨烯生物传感器电极 |
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JPH07106769A (ja) * | 1993-10-08 | 1995-04-21 | Ibiden Co Ltd | 電子部品搭載用多層基板の製造方法 |
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US6239980B1 (en) * | 1998-08-31 | 2001-05-29 | General Electric Company | Multimodule interconnect structure and process |
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1998
- 1998-11-19 KR KR10-2000-7005254A patent/KR100379119B1/ko not_active IP Right Cessation
- 1998-11-19 EP EP98954739A patent/EP1043921A4/en not_active Withdrawn
- 1998-11-19 WO PCT/JP1998/005200 patent/WO1999026458A1/ja active IP Right Grant
- 1998-11-19 KR KR10-2002-7009773A patent/KR100393271B1/ko not_active IP Right Cessation
- 1998-11-19 US US09/554,481 patent/US6455783B1/en not_active Expired - Lifetime
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JPH0837378A (ja) * | 1994-07-21 | 1996-02-06 | Hitachi Chem Co Ltd | キャビティ付多層配線板の製造法 |
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Also Published As
Publication number | Publication date |
---|---|
US6455783B1 (en) | 2002-09-24 |
EP1043921A4 (en) | 2007-02-21 |
KR20010024616A (ko) | 2001-03-26 |
EP1043921A1 (en) | 2000-10-11 |
KR100379119B1 (ko) | 2003-04-07 |
KR100393271B1 (ko) | 2003-07-31 |
KR20020073517A (ko) | 2002-09-26 |
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