WO2022243132A1 - Verfahren zur herstellung einer leiterplatte und leiterplatte mit mindestens einem eingebetteten elektronischen bauteil - Google Patents
Verfahren zur herstellung einer leiterplatte und leiterplatte mit mindestens einem eingebetteten elektronischen bauteil Download PDFInfo
- Publication number
- WO2022243132A1 WO2022243132A1 PCT/EP2022/062779 EP2022062779W WO2022243132A1 WO 2022243132 A1 WO2022243132 A1 WO 2022243132A1 EP 2022062779 W EP2022062779 W EP 2022062779W WO 2022243132 A1 WO2022243132 A1 WO 2022243132A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circuit board
- layer
- printed circuit
- board module
- electrically insulating
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 3
- 238000005476 soldering Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 33
- 239000004020 conductor Substances 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 7
- 238000001465 metallisation Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000005530 etching Methods 0.000 claims description 3
- 238000003698 laser cutting Methods 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims 1
- 238000004080 punching Methods 0.000 claims 1
- 238000007747 plating Methods 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 224
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 11
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 8
- 239000011889 copper foil Substances 0.000 description 6
- 239000012792 core layer Substances 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 229920000965 Duroplast Polymers 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000004638 Duroplast Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
- H05K1/185—Components encapsulated in the insulating substrate of the printed circuit or incorporated in internal layers of a multilayer circuit
- H05K1/188—Components encapsulated in the insulating substrate of the printed circuit or incorporated in internal layers of a multilayer circuit manufactured by mounting on or attaching to a structure having a conductive layer, e.g. a metal foil, such that the terminals of the component are connected to or adjacent to the conductive layer before embedding, and by using the conductive layer, which is patterned after embedding, at least partially for connecting the component
-
- 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
-
- 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
-
- 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
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
- H05K1/185—Components encapsulated in the insulating substrate of the printed circuit or incorporated in internal layers of a multilayer 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
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10166—Transistor
-
- 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
- H05K2203/06—Lamination
- H05K2203/063—Lamination of preperforated insulating layer
Definitions
- the invention relates to a method for producing a printed circuit board with at least one embedded electronic component and a printed circuit board with at least one embedded electronic component.
- Electrical printed circuit boards which are sometimes also referred to as printed electrical circuits, have been used as carriers of electronic components in electrical devices, machines, systems and motor vehicles for many decades. These are usually rigid printed circuit boards, which on the one hand electrically connect discrete components and highly integrated components to one another and on the other hand act as carriers for the same.
- the printed circuit boards usually consist of one or more individual layers that are copper-coated on one or both sides to form conductor tracks or conductor patterns. In the case of multi-layer printed circuit boards, the individual levels or the conductor tracks arranged on the individual layers are electrically connected to one another by metallized holes in the printed circuit board.
- electrical or electronic components have not only been arranged or embedded on the two outer layers of a printed circuit board for several years, but also inside the printed circuit board.
- These are active or passive electronic components or components, such as semiconductors or resistors, inductors and capacitors that are integrated into the printed circuit board.
- the embedding of components in a printed circuit board has the advantage that the components are protected from environmental influences and high voltages.
- the embedding also results in a better thermal connection and shielding of the components, so that the corresponding requirements with regard to EMC can be better met.
- the construction part is first glued to a structured circuit board core with a conductive adhesive.
- the printed circuit board core assembled in this way is then pressed into a multilayer, before further process steps that are customary in the production of multilayer printed circuit boards follow.
- unpackaged electronic components bare dies
- a similarly constructed printed circuit board is known from US 2009/0084596 A1.
- a core layer in which a recess is formed, is first placed on a carrier layer which has a resin layer.
- the carrier layer is heated to a temperature of 40 to 60° C., at which the resin used softens.
- An unpackaged electronic component is then inserted into the recess in the core layer, with the carrier layer being heated again to a temperature of 40 to 60° C. in order to fix the component on the carrier layer.
- an uncured resin layer is pressed onto the surface of the core layer, the resin layer being heated to a temperature of up to 150 to 180° C., so that the electronic component arranged in the recess is surrounded by the resin.
- the object of the present invention is to provide a method by which printed circuit boards with at least one embedded electronic component can be produced easily and reliably.
- a printed circuit board with at least one embedded electronic component should be specified, which can be easily manufactured.
- the printed circuit board produced using the method according to the invention differs significantly from the known printed circuit boards with embedded electronic components in that the electronic component is embedded in a printed circuit board module.
- the electronic component itself can be embodied as an unhoused electronic component (bare dies), which is arranged in an insulating individual layer, with an electrically conductive layer, for example a copper foil, being applied to the top and/or bottom of the individual layer.
- the insulating layer or individual layer can be a base material, for example a composite material consisting of a thermoset and a reinforcing material based on different types of glass fiber fabric.
- the base laminate can be, for example, an FR4 base laminate, as has been used extensively in the manufacture of printed circuit boards for years.
- the electrical connection between the contacts of the electronic component and at least one electrically conductive layer or the connection surfaces formed on the conductive layer can be made in different ways. Contacting via metallized bores as well as via individual conductors or wires that are introduced into the insulating middle layer is conceivable. Such printed circuit board modules with an embedded electronic component are offered by various manufacturers of electronic components.
- the printed circuit board module has at least one electrically conductive layer and at least one electrically insulating layer. It is preferably provided that the printed circuit board module has two outer electrically conductive layers, between which the min least one electrically insulating layer is arranged as the middle layer.
- the electrically insulating layer can itself be composed of a plurality of electrically insulating individual layers, which are preferably connected to one another by pressing during manufacture of the printed circuit board module.
- the specific design of the printed circuit board module and in particular the special type of electrical connection in the printed circuit board module is not of particular importance within the scope of the present application.
- the embedded printed circuit board module is contacted via metallized holes that reach at least the connection surfaces of the printed circuit board module.
- the pads can be arranged only on one side of the printed circuit board module or on both sides of the printed circuit board module - even with two outer electrically conductive layers.
- soldering or gluing of the printed circuit board module inserted into the recess in the positioning layer can be dispensed with. It is also not necessary to heat the carrier layer before or when the printed circuit board module is inserted. Rather, the printed circuit board module can be positioned simply by being inserted into the corresponding recess in the positioning layer.
- the recess in the positioning layer is adapted with its dimen- sions to the external dimensions of the printed circuit board module, d. H. the recess is only slightly larger than the printed circuit board module in the not yet pressed state.
- the recess in the positioning layer is dimensioned so that after inserting the printed circuit board module into the recess, the lateral distance a between the printed circuit board module and the positioning layer surrounding the printed circuit board module is as small as possible to enable precise positioning.
- there is a defined distance a between the printed circuit board module used and the at least one insulating layer surrounding the printed circuit board module in the not yet pressed state which is selected in such a way that both a sufficiently simple insertion of the printed circuit board module into the recess and a safe positioning of the Printed circuit board module can be guaranteed in the recess after pressing.
- the distance is selected to be only large enough for the gap between the edge of the recess and the electronic component to be filled during pressing.
- the distance is preferably less than 0.5 mm, in particular less than 0.3 mm.
- the distance on the other side is preferably at least 0.1 mm, in particular approx. 0.2 mm, as a result of which both criteria can be met very well.
- the insertion of a printed circuit board module into the recess can be done either manually or automatically, for example if several printed circuit boards are produced simultaneously in a corresponding panel.
- the structure of the individual printed circuit boards can be achieved, for example, by positioning the individual layers on top of one another in a registration system. For the precise positioning of the individual layers on top of one another, corresponding recesses can be formed in the edge region of the individual layers or panels.
- the layers of the printed circuit board are laid one on top of the other in succession, with the printed circuit board module to be embedded being inserted into the recess of the positioning layer in an intermediate step and being placed on the carrier layer.
- the printed circuit board module used in this way is then covered by at least one electrically insulating layer before an outer electrically conductive layer is applied as the upper layer.
- the layer sequence created in this way with the embedded printed circuit board module is then pressed, whereby the printed circuit board module is fixed in its position and at the same time the individual layers of the printed circuit board are mechanically connected to one another.
- more than one circuit board module can also be embedded in a circuit board.
- the positioning layer then has a number of recesses corresponding to the number of printed circuit board modules to be embedded, which are each adapted to the external dimensions of the individual printed circuit board modules.
- holes are then made in the pressed layer sequence in the area of the connection surfaces of the printed circuit board module.
- the holes have at least such a depth that the connection surfaces are drilled. This ensures that the subsequent measurement If the holes are drilled, a good electrical connection of the individual connection surfaces is guaranteed.
- the holes made in the printed circuit board are preferably blind holes that penetrate a few micrometers into the connection surfaces.
- the bores could also be in the form of through-holes, in which case the electrical connection of the connection surfaces to the at least one outer electrically conductive layer also takes place by metallizing the bores.
- the electronic component is embedded in the printed circuit board module and therefore also in the printed circuit board, not only can the printed circuit board be packed more densely, heat generated in the component can also be better dissipated via the material immediately surrounding the component possible. This leads to increased performance of the component.
- the embedding of the component also has the advantage that the circuit implemented by the printed circuit board is not immediately recognizable, so that there is improved protection against plagiarism.
- the carrier layer initially serves as the lowest layer in the construction of the circuit board, so that the carrier layer should have sufficient stability.
- the carrier layer can be an insulating layer, for example a hardened base material.
- a composite material can be used as the base material, which consists of a duroplast and a reinforcement material based on different types of glass fiber fabric. If the carrier layer consists of an electrically insulating material, the bores are made in the layer sequence from the upper, electrically conductive layer, so that the bores extend through the electrically conductive layer and the at least one electrically insulating layer covering the printed circuit board module down to at least the connection surfaces of the printed circuit board module.
- the carrier layer has an electrically conductive layer and an electrically insulating layer.
- the electrically insulating layer is arranged between the electrically conductive layer and the printed circuit board module or the positioning layer, so that the electrically conductive layer forms the outer, lower layer.
- the printed circuit board thus has two electrically conductive layers as outer layers, which are in particular can be copper foils.
- the holes can only be made from one side in the layer sequence, in which case the holes can be made both from the top side and from the bottom, since both the top and the bottom of an electrically conductive layer is formed, so that in both cases the connection surfaces can be connected to an outer electrically conductive layer via the metallized holes.
- the carrier layer has an electrically conductive layer, at least some of the bores can also extend through the carrier layer.
- the printed circuit board module has an electrically conductive layer and at least one connection surface both on its upper side and on its lower side
- Drillings are introduced in the area of the connection surfaces, each of which extends at least to the connection surfaces.
- the bores each have at least such a depth that the upper side of the connection surfaces facing the respective electrically conductive layer is drilled.
- the contacting of the individual connection surfaces is preferably carried out from the side of the layer sequence from which the connection surface has the smaller distance, so that the bores to be made have the smallest possible depth.
- the positioning layer serves to position a printed circuit board module during the production of the printed circuit board.
- the recess in the positioning layer, into which the printed circuit board module is inserted before pressing, defines the position of the printed circuit board module so precisely that when drilling the holes after pressing, it is ensured that the connection surfaces are also contacted with the holes.
- the printed circuit board module used is thus positioned and fixed in its position by the positioning layer.
- the positioning layer can consist of a single electrically insulating layer, the thickness of which is then adapted to the thickness of the printed circuit board module.
- the positioning layer has at least two electrically insulating layers, the electrically insulating layers each having a recess for the printed circuit board module.
- a fiberglass fabric impregnated with resin, which has dried but not yet hardened, is generally considered to be a prepreg.
- at least one prepreg as an insulating layer, sufficient resin, mostly epoxy resin, is available when the finished layer sequence is pressed, so that the printed circuit board module inserted into the recess of the positioning layer is fixed in its position.
- the use of at least one prepreg also improves the mechanical connection between the individual layers.
- a prepreg layer is therefore also used for the insulating layer covering the printed circuit board module and possibly also for the insulating layer of the carrier.
- the hardened base laminate used in comparison to the unhardened prepreg for at least a second insulating layer of the positioning layer serves to ensure sufficient stability of the printed circuit board and to ensure secure positioning of the printed circuit board module to be embedded in the recess of the positioning layer before pressing.
- a composite material can be used as the cured base laminate, which consists of a duroplast and a reinforcing material based on glass fiber fabric types.
- the base laminate can be, for example, an FR4 base laminate that is known in the production of printed circuit boards.
- At least one insulating layer should not yet be used be cured and at least one insulating layer of the positioning layer be cured.
- the positioning layer has a plurality of electrically insulating layers, each of which has a corresponding recess, these are placed one after the other on the first, lower insulating layer during the production of the positioning layer.
- the recesses formed in the individual electrically insulating layers are each adapted to the corresponding outer dimensions of the printed circuit board module, with the recess always being selected to be somewhat larger than the corresponding outer dimensions.
- the uppermost insulating layer can have a larger recess than the electrically insulating layer arranged underneath.
- the recesses formed in the individual electrically insulating layers can also have recesses of the same size.
- the electrically insulating layers of the positioning layer do not have to consist entirely of insulating material. It is thus possible, for example, for at least one electrically conductive section, in particular at least one conductor track, to be arranged on the underside and/or the upper side of at least one electrically insulating layer. Standard printed circuit boards can thus also be used as electrically insulating layers, in which corresponding conductor tracks are applied to the underside and/or the upper side.
- a prepreg is preferably used for at least one of these electrically insulating layers and a cured base material is used for at least one other of the electrically insulating layers .
- the middle insulating layer can preferably consist of a prepreg, while a hardened base material is used for each of the two outer insulating layers.
- corresponding recesses are made in the insulating layers of the positioning layer into which the printed circuit board module is set, so that these electrical trically insulating layers are prepared accordingly with the recess before the individual layers are stacked.
- the recesses in the electrically insulating layers can in particular be etched, milled, punched or produced by laser cutting. Depending on the design of the recess, a combination of the methods described above is also possible.
- the electrically conductive layers which are usually copper foils, preferably have a thickness of at least 50 ⁇ m, preferably at least 75 ⁇ m, in particular about 105 ⁇ m.
- the use of relatively thick copper foils for the electrically conductive layers has the advantage that a printed circuit board with relatively thick conductor tracks on the two outer sides can be easily produced as a result. As a result, larger currents can also flow through the conductor tracks without any impermissible heating of the conductor tracks and thus the printed circuit board as a whole.
- the desired final thickness of the conductor tracks can be further increased to the desired thickness, for example by galvanic copper plating.
- the bores are preferably made in the area of the contact terminals of the electronic component by means of mechanical drilling.
- the methods otherwise used in the production of printed circuit boards for introducing bores, such as lasers or etching, are less suitable for the method according to the invention.
- the diameter of the bores preferably corresponds at least to the depth of the bores. Because the ratio of hole diameter to hole depth is selected to be equal to or greater than 1, good metallization of the holes can be achieved.
- connection surfaces of the embedded circuit board module arranged inside the circuit board to corresponding connection surfaces on the surface of the circuit board formed by the electrically conductive layer, as previously explained, bores are made in the circuit board, which at least reach into the connection surfaces, with the hole walls of the holes are then metalized.
- the electrically conductive layer is preferably structured accordingly. In detail, the following steps can be carried out:
- connection surfaces it is not necessary for all of the aforementioned steps for generating the connection surfaces to be carried out.
- the galvanic copper plating and thus also the pressure of the plating resist can be omitted.
- Fig. 1 is a schematic representation of individual steps of the inventions to the invention method for producing a circuit board with an embedded circuit board module
- Fig. 2 is a schematic representation of a secondforsbei game of a printed circuit board according to the invention.
- the electronic component 2 which can be a power semiconductor in particular, is an electronic component that has no housing, ie a so-called "bare die”.
- the electronic component 2 is embedded in a printed circuit board module 3, for which purpose the printed circuit board module 3 consists of two outer electrically conductive layers 4 and a middle insulating layer 5 arranged between them.
- the electronic component 2 is surrounded by the electrically insulating layer 5, which is a cured base laminate, in particular special can be an FR4 base laminate.
- the electrically insulating layer 5 which is a cured base laminate, in particular special can be an FR4 base laminate.
- its contacts 6 are conductively connected to connection surfaces 7 of the electrically conductive layers 4, which are only indicated in the figures.
- the specific design of the printed circuit board module 3 and in particular the type of electrical connection between the contacts 5 of the electronic component 2 and the connection surfaces 7 on the conductive layers 4 can also be implemented differently.
- the printed circuit board 1 shown schematically in FIG. 1 is produced in that first of all the individual layers described in more detail below are placed one on top of the other.
- the individual layers or plies are positioned one above the other on a corresponding table, the table having appropriate devices which ensure that the individual layers are positioned precisely one above the other.
- upwardly projecting pins can be arranged on the table and corresponding recesses can be formed in the edge area of the individual layers, so that the layers with the recesses can be pushed over the pins on the table and the individual layers can thus be positioned precisely.
- a carrier layer 8 is first positioned or provided accordingly, on which a positioning layer 9 is arranged, which has a recess 10 which is larger than the corresponding base area of the printed circuit board module 3 .
- a positioning layer 9 is arranged, which has a recess 10 which is larger than the corresponding base area of the printed circuit board module 3 .
- each having a recess 10 the recesses 10 in the three insulating layers 17, 18, 19 being of equal size.
- the printed circuit board module 3 is inserted into the recesses 10 in the positioning layer 9 or the individual electrically insulating layers 17, 18, 19.
- the lateral distance a between the printed circuit board module 3 used and the insulating layer 17, 18, 19 surrounding the printed circuit board module 3 is selected in such a way that the printed circuit board module 3 can be inserted well into the recess 10 on the one hand, but is also positioned sufficiently la against it on the other .
- this distance is a preferably at least approximately the same size on all sides and is preferably less than 0.3 mm. in particular about 0.2 mm.
- Another insulating layer 11 is placed on the printed circuit board module 3 and the uppermost electrically insulating layer 19 of the positioning layer 9 surrounding the printed circuit board module 3 as shown in FIG.
- This insulating layer 11 has no recess and corresponds in its dimensions to the insulating layer 16 of the carrier layer 8.
- An electrically conductive layer 12 is then placed as the top layer on the insulating layer 11, which has the dimensions of the electrically conductive layer 15 the carrier layer 8 corresponds.
- the two electrically conductive layers 12, 15 are, in particular, special copper foils which have a thickness d of more than 50 ⁇ m, in particular about 105 ⁇ m.
- the layer sequence 13 produced in this way is pressed, which on the one hand connects the individual layers to one another and on the other hand also fills the gap laterally surrounding the embedded printed circuit board module 3.
- prepregs are used for the electrically insulating layers 11, 16 and 18, ie a fiberglass fabric impregnated with reaction resin, which has dried but not yet cured.
- sufficient resin in particular from the prepregs, gets into the intermediate space surrounding the embedded printed circuit board module 3, so that the printed circuit board module 3 is securely fixed in its position.
- the previously individual insulating layers 11, 16 and 17 to 19 are connected to one another by pressing to form a common insulating layer 20.
- holes 14 are made in the area of the connection surfaces 7 of the printed circuit board module 3 in the printed circuit board 1 previously produced by pressing the layer sequence 13, with the holes 14 passing through the upper electrically conductive layer 12 and the insulating layer 11 covering the printed circuit board module 3 walk.
- a hole 14 is made in the layer sequence 13, which extends from the carrier layer 8, i.e. from the lower electrically conductive layer 15 through the insulating layer 16 to a connection surface 7 on the lower conductive layer 4 of the printed circuit board module 3 extends.
- the holes 14 have while having such a depth that the connection surfaces 7 are drilled on their respective upper side.
- the metallization of the bores 14 then takes place, as a result of which the connection surfaces 7 of the embedded circuit board module 3 are connected to the upper electrically conductive layer 12 and the lower electrically conductive layer 15 . Because the surface of the connection surfaces 7 was drilled in the previous step, a secure electrical connection to the connection surfaces 7 via the metallized bores 14 is ensured. Simultaneously with the metallization of the holes 14 are preferably on the surface of the circuit board 1, d. H. the upper electrically conductive layer 12 corresponding connection surfaces are produced, for which purpose the electrically conductive layer 12 is structured accordingly.
- the thickness of the electrically conductive layer 12 does not correspond to the desired nominal thickness of the connection surfaces or the conductor tracks, it can be increased to the desired nominal thickness by galvanic copper plating. Similar to the upper electrically conductive layer 12, the electrically conductive layer 15 of the carrier layer 8, which represents the lower layer, can also be structured to produce corresponding connection areas and conductor tracks. Here, too, the thickness of the connection surfaces and conductor tracks can be further increased as required.
- FIG. 2 shows a second embodiment of a printed circuit board 1, which is constructed and manufactured almost exactly like the printed circuit board 1 shown in FIG.
- This metallized bore 14' extends both through the electrically conductive layers 12 and 15 and the insulating layers 11, 16 and 17 to 19 and through the printed circuit board module 3, i.e. its two outer conductive layers 4 and its middle insulating layer 5.
- PCB module 4. conductive layers
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
- Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP22723700.5A EP4342267A1 (de) | 2021-05-18 | 2022-05-11 | Verfahren zur herstellung einer leiterplatte und leiterplatte mit mindestens einem eingebetteten elektronischen bauteil |
CN202280006754.0A CN116326220A (zh) | 2021-05-18 | 2022-05-11 | 用于制造印刷电路板的方法和具有至少一个嵌入式电子组件的印刷电路板 |
US18/027,134 US20230337363A1 (en) | 2021-05-18 | 2022-05-11 | Method for producing a printed circuit board, and printed circuit board having at least one embedded electronic component |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021112814.5 | 2021-05-18 | ||
DE102021112814.5A DE102021112814A1 (de) | 2021-05-18 | 2021-05-18 | Verfahren zur Herstellung einer Leiterplatte und Leiterplatte mit mindestens einem eingebetteten elektronischen Bauteil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022243132A1 true WO2022243132A1 (de) | 2022-11-24 |
Family
ID=81654538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2022/062779 WO2022243132A1 (de) | 2021-05-18 | 2022-05-11 | Verfahren zur herstellung einer leiterplatte und leiterplatte mit mindestens einem eingebetteten elektronischen bauteil |
Country Status (6)
Country | Link |
---|---|
US (1) | US20230337363A1 (de) |
EP (1) | EP4342267A1 (de) |
CN (1) | CN116326220A (de) |
DE (1) | DE102021112814A1 (de) |
TW (1) | TW202301931A (de) |
WO (1) | WO2022243132A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090084596A1 (en) | 2007-09-05 | 2009-04-02 | Taiyo Yuden Co., Ltd. | Multi-layer board incorporating electronic component and method for producing the same |
US20190320534A1 (en) * | 2017-01-11 | 2019-10-17 | Mitsubishi Electric Corporation | Printed circuit board and method for manufacturing printed circuit board |
US20210112666A1 (en) * | 2019-10-14 | 2021-04-15 | At&S Austria Technologie & Systemtechnik Aktiengesellschaft | Component Carrier and Method of Manufacturing the Same |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005032489B3 (de) | 2005-07-04 | 2006-11-16 | Schweizer Electronic Ag | Leiterplatten-Mehrschichtaufbau mit integriertem elektrischem Bauteil und Herstellungsverfahren |
DE102017220175A1 (de) | 2017-11-13 | 2019-05-16 | Andus Electronic Gmbh Leiterplattentechnik | Platinentechnologie für leistungselektronische Schaltungen |
-
2021
- 2021-05-18 DE DE102021112814.5A patent/DE102021112814A1/de active Pending
-
2022
- 2022-05-03 TW TW111116604A patent/TW202301931A/zh unknown
- 2022-05-11 EP EP22723700.5A patent/EP4342267A1/de active Pending
- 2022-05-11 US US18/027,134 patent/US20230337363A1/en active Pending
- 2022-05-11 CN CN202280006754.0A patent/CN116326220A/zh active Pending
- 2022-05-11 WO PCT/EP2022/062779 patent/WO2022243132A1/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090084596A1 (en) | 2007-09-05 | 2009-04-02 | Taiyo Yuden Co., Ltd. | Multi-layer board incorporating electronic component and method for producing the same |
US20190320534A1 (en) * | 2017-01-11 | 2019-10-17 | Mitsubishi Electric Corporation | Printed circuit board and method for manufacturing printed circuit board |
US20210112666A1 (en) * | 2019-10-14 | 2021-04-15 | At&S Austria Technologie & Systemtechnik Aktiengesellschaft | Component Carrier and Method of Manufacturing the Same |
Also Published As
Publication number | Publication date |
---|---|
EP4342267A1 (de) | 2024-03-27 |
DE102021112814A1 (de) | 2022-11-24 |
US20230337363A1 (en) | 2023-10-19 |
TW202301931A (zh) | 2023-01-01 |
CN116326220A (zh) | 2023-06-23 |
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