WO2010050193A1 - 多層配線基板およびその製造方法 - Google Patents
多層配線基板およびその製造方法 Download PDFInfo
- Publication number
- WO2010050193A1 WO2010050193A1 PCT/JP2009/005684 JP2009005684W WO2010050193A1 WO 2010050193 A1 WO2010050193 A1 WO 2010050193A1 JP 2009005684 W JP2009005684 W JP 2009005684W WO 2010050193 A1 WO2010050193 A1 WO 2010050193A1
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- WIPO (PCT)
- Prior art keywords
- wiring board
- multilayer wiring
- resin
- resin base
- wiring pattern
- Prior art date
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Classifications
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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
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4626—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials
- H05K3/4635—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials laminating flexible circuit boards using additional insulating adhesive materials between the boards
-
- 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
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4614—Manufacturing multilayer circuits by laminating two or more circuit boards the electrical connections between the circuit boards being made during lamination
- H05K3/4617—Manufacturing multilayer circuits by laminating two or more circuit boards the electrical connections between the circuit boards being made during lamination characterized by laminating only or mainly similar single-sided circuit boards
-
- 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
- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
- H05K1/165—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor incorporating printed inductors
-
- 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
- H05K2201/01—Dielectrics
- H05K2201/0104—Properties and characteristics in general
- H05K2201/0129—Thermoplastic polymer, e.g. auto-adhesive layer; Shaping of thermoplastic polymer
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/09672—Superposed layout, i.e. in different planes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49117—Conductor or circuit manufacturing
- Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
- Y10T29/49126—Assembling bases
Definitions
- the present invention relates to a multilayer wiring board that is a laminate of a plurality of resin base materials and a method for manufacturing the same, and more particularly, to a multilayer wiring board that is a laminate of a plurality of resin base materials each having a wiring pattern that constitutes a passive element, and It relates to the manufacturing method.
- a high density of flexible wiring boards can be obtained by attaching a plurality of resin substrates each having a wiring pattern on one side via an adhesive layer. This can be realized by stacking and forming a multilayer wiring structure.
- Patent Document 2 Japanese Patent Laid-Open No. 2008-103640
- Patent Document 3 Japanese Patent Laid-Open No. 2007-096121
- the multilayer wiring structure disclosed in Patent Document 2 has a structure in which wiring substrates having wiring patterns (conductor patterns) and multilayer resin layers are alternately laminated, and each multilayer resin layer is made of a thermoplastic resin.
- a first layer, a second layer made of a thermosetting resin, and a connecting conductor penetrating through the first layer and the second layer are included.
- Patent Document 3 discloses a wiring substrate comprising an insulating base material having a conductor pattern on the surface and made of a thermoplastic resin, and a conductive paste filled in a via hole penetrating the insulating base material.
- the multilayer wiring structure of Patent Document 3 is configured by laminating a plurality of such wiring boards at one time or sequentially by thermal fusion.
- Patent Document 1 discloses a multilayer wiring structure using an adhesive layer, but since the loss tangent of the adhesive layer is large, the multilayer wiring structure of Patent Document 1 is suitable for a high-frequency device. That's not true.
- thermoplastic resin As a constituent material of a multilayer wiring structure.
- a multilayer wiring structure can be produced by integrating a plurality of thermoplastic resin base materials having a wiring pattern on the surface by thermal fusion.
- passive elements for high-frequency devices such as inductors and coil antennas
- the wiring pattern formed on the thermoplastic resin base material may be deformed. In this case, if the wiring pattern is greatly deformed, there is a problem that the wiring pattern between adjacent layers is short-circuited or a passive element that causes a malfunction is formed.
- an object of the present invention is to provide a multilayer wiring board having a wiring pattern having excellent electrical characteristics in a high frequency band and having a good shape accuracy.
- a plurality of resin base materials stacked via separators, a plurality of wiring patterns respectively formed on one surface of the plurality of resin base materials, and the resin base material and the separator are penetrated.
- the resin base material and the separator are heat-sealed, and the separator is made of a first thermoplastic resin material having a first glass transition temperature. It consists of a 2nd thermoplastic resin material which has a 2nd glass transition temperature higher than a said 1st glass transition temperature.
- a step of embedding and forming conductive bumps in N ⁇ 1 resin substrates among N resin substrates (N is an integer of 2 or more)
- a step of disposing the material on the outermost side, and after the N resin base materials are overlapped via a separator, the N resin base materials and the separator are integrated by heat fusion.
- the separator is made of a first thermoplastic resin material having a first glass transition temperature, and each of the resin substrates is a second glass transition temperature higher than the first glass transition temperature.
- the N resin base materials and the separator are more than the first glass transition temperature. And is heat-sealed at a temperature lower than the second glass transition temperature.
- the multilayer wiring board according to the present invention has a multilayer wiring structure in which a plurality of resin base materials having a wiring pattern formed on the surface and a separator are thermally fused. Since the glass transition temperature of the thermoplastic resin constituting the resin base material is higher than the glass transition temperature of the thermoplastic resin constituting the separator, the multilayer wiring board according to the present invention melts and softens the resin base material. In addition, the resin base material and the separator are thermally fused at a temperature at which the separator melts and softens, thereby preventing a change in the shape of the wiring pattern on the resin base material. Therefore, it is possible to provide a multilayer wiring board having a wiring pattern having excellent electrical characteristics (low dielectric constant and low dielectric loss) in a high frequency band and having a good shape accuracy.
- the method for producing a multilayer wiring board according to the present invention is more than the glass transition temperature (first glass transition temperature) of the separator when the plurality of resin base materials having a wiring pattern formed on the surface and the separator are heat-sealed. Since the resin base material and the separator are thermally fused at a temperature that is high and lower than the glass transition temperature (second glass transition temperature) of the resin base material, it is possible to melt and soften the separator without melting and softening the resin base material. it can. Accordingly, it is possible to produce a multilayer wiring board having a wiring pattern having excellent electrical characteristics (low dielectric constant and low dielectric loss) in a high frequency band and having a good shape accuracy.
- FIG. 1 is a diagram schematically showing a laminated structure of a multilayer wiring board 1 according to a first embodiment of the present invention.
- the multilayer wiring board 1, the separator 12 1, ..., 12 N-1 resin substrate 10 1 laminated via, ..., and 10 N, these resin substrates 10 1, ..., 10 lines are respectively formed on one surface of the N patterns 11 1, ..., 11 N and the conductive bumps 20 1 to these wiring patterns 11 1 ⁇ 11 N are electrically connected , 21 2 ,..., 20 N ⁇ 1 .
- the conductive bumps 20 1 to 20 N-1 are formed so as to penetrate the resin base materials 10 1 to 10 N-1 and the separators 12 1 to 12 N-1 . That is, (either k is 1 ⁇ N-1) layers of conductive bumps 20 k is from one of the wiring patterns 11 k of the wiring patterns 11 k, 11 k + 1 adjacent to each other to the other wiring pattern 11 k + 1 It is formed to protrude.
- the constituent material of the conductive bumps 20 1 to 20 N-1 may be one or more metal materials selected from the group consisting of gold, silver, nickel, tin, lead, zinc, bismuth, antimony and copper. That's fine.
- a high - frequency passive element can be constituted by the wiring patterns 11 1 to 11 N and the conductive bumps 20 1 to 20 N ⁇ 1 .
- Examples of the high-frequency passive element include a resistor, an inductor, a capacitor or a coil antenna, or a combination thereof.
- the separators 12 1 to 12 N-1 are made of a thermoplastic resin material, and the resin base materials 10 1 to 10 N are also made of a thermoplastic resin material.
- the thermoplastic resin material constituting the resin base materials 10 1 to 10 N has a glass transition temperature Tg2 higher than the glass transition temperature Tg1 of the thermoplastic resin material constituting the separators 12 1 to 12 N-1 .
- a multilayer wiring board 1 is produced by thermally fusing such resin base materials 10 1 to 10 N and separators 12 1 to 12 N-1 at a temperature higher than Tg1 and lower than Tg2.
- the resin substrate 10 1 ⁇ 10 N without melting softened separators 12 1 ⁇ 12 N-1 a-resin base material 10 1 at a temperature for melting the softening 10 N and the separators 12 1 ⁇ 12 N-1 and a thermal By fusing and integrating, it is possible to prevent the shape of the wiring patterns 11 1 to 11 N on the resin base materials 10 1 to 10 N from being changed in the heat fusion process.
- the thermoplastic resin material of the resin base material 10 1 to 10 N and the thermoplastic resin material of the separator 12 1 to 12 N-1 are cyclic olefin resin compositions having different glass transition temperatures Tg2 and Tg1, respectively. It is configured as the main component.
- the cyclic olefin-based resin mainly includes a (co) polymer of cyclic olefin monomers. By changing the polymerization conditions, it is possible to obtain the desired glass transition temperatures Tg2 and Tg1 by controlling the molecular weight and crosslinking density of the cyclic olefin resin.
- the glass transition temperatures Tg2 and Tg1 can be increased by increasing the degree of polymerization or increasing the side chain of the cyclic olefin resin.
- norbornene resins are particularly preferable among the cyclic olefin resin compositions.
- the norbornene-based resin can realize electrical characteristics such as a dielectric constant of about 2 and a dielectric loss tangent of the order of 10 ⁇ 3 to 10 ⁇ 4 at 10 GHz.
- trade names “TOPAS 8007” glass transition temperature 78 ° C.
- TOPAS 6013” manufactured by TiCoNa.
- Glass transition temperature 138 ° C. Glass transition temperature 138 ° C.
- TOPAS 6015 glass transition temperature 158 ° C.
- TOPAS 5013 glass transition temperature 134 ° C.
- TOPAS 6017 glass transition temperature 178 ° C.
- the resin base materials 10 1 to 10 N and the separator 12 are used.
- a combination of “TOPAS 5013” and “TOPAS 8007” can be mentioned, but it is not limited to this.
- a copper foil is formed on one surface of each of the N resin substrates 10 1 to 10 N.
- conductive bump 20 1 ⁇ 20 N-1 in the N resin bases 10 1 ⁇ 10 N are formed.
- through holes reaching the copper foil from the other surface of the resin base materials 10 1 to 10 N-1 are formed.
- conductive protrusions that protrude outward from the through holes are formed by electrolytic plating or paste imprinting.
- the conductive protrusion may be made of copper, for example. If a laser is used, a highly accurate through hole can be easily formed in the resin base materials 10 1 to 10 N-1 .
- the exposed surface of the conductive protrusion is covered with a metal or an alloy.
- the metal is at least one selected from the group consisting of gold, silver, nickel, tin, lead, zinc, bismuth and antimony, and may be a single layer or two or more layers.
- the alloy include solder composed of at least two metals selected from the group consisting of tin, lead, silver, zinc, bismuth, antimony, and copper.
- solder include, but are not limited to, tin-lead, tin-silver, tin-zinc, tin-bismuth, tin-antimony, tin-silver-bismuth, or tin-copper. What is necessary is just to select an optimal thing.
- the melting point of the metal or alloy mentioned here is sufficiently higher than the glass transition temperature of the resin base material 10 1 to 10 N or the separator 12 1 to 12 N-1 , and does not melt in the above-mentioned heat fusion process.
- the copper foils formed on the surfaces of the N resin base materials 10 1 to 10 N are etched to form the wiring patterns 11 1 to 11 N.
- These wiring patterns 11 1 to 11 N are designed in advance so as to constitute high-frequency passive elements such as inductors, resistors, capacitors, and matching circuits.
- it is desirable that at least a part of the wiring patterns 11 1 to 11 N formed in this step is a spiral wiring pattern having a turning angle exceeding 360 °. Details thereof will be described later.
- the molding machine the resin substrate 10 1, ..., a separator 12 1 10 N, ..., superimposed over the 12 N-1.
- the wiring patterns 11 1 ⁇ 11 N is the resin substrate 10 1 ⁇ 10 N to face all the same direction are arranged, the conductive bumps are not formed resin substrate 10 N is arranged on the outermost side .
- the resin base materials 10 1 to 10 N and the separators 12 1 to 12 N-1 placed in the molding machine are higher than the glass transition temperature Tg1 of the separators 12 1 to 12 N-1 , and the resin base material 10 Hot pressing is performed at a temperature in the range of 1 to 10 N and less than the glass transition temperature Tg2.
- the resin base materials 10 1 to 10 N and the separators 12 1 to 12 N-1 are heat - sealed.
- Conductive bumps 20 1, ..., 20 N-1, respectively, separator 12 1 was melted and softened, ..., through the 12 N-1, the wiring pattern 11 2, ..., of 11 N Bonded with the surface.
- FIGS. 3A and 3B are plan views schematically showing examples of wiring patterns 11 k and 11 m constituting a spiral wiring for an inductor or a coil antenna.
- a spiral wiring can be configured by a combination of the wiring pattern 11 k in FIG. 3A and the wiring pattern 11 m in FIG.
- the wiring pattern 11 k in FIG. 3A is a spiral wiring having bump joint points 21 k and 22 k at the ends, and the wraparound angle is approximately 360 °.
- the wiring pattern 11 m in FIG. 3B is a spiral wiring having bump joint points 21 m and 22 m at the ends, and the wraparound angle exceeds 360 °.
- the wiring patterns 11 k and 11 m have a shape made up of a combination of a curve and a straight line, but may be composed only of a curve or only a straight line.
- the spiral is a shape that rises or falls while rotating in the thickness direction of the multilayer wiring board 1. Further, the spiral shape is a shape that moves away from or approaches the central axis as it turns on the plane of the multilayer wiring board 1.
- a spiral wiring can be formed.
- a bump bonding point 21 k formed on the other end of the wiring pattern 11 k in FIG. 3A and a bump bonding point 21 m formed on the other end of the wiring pattern 11 m in FIG. It is possible to form a spiral wiring by connecting via conductive bumps.
- FIG. 4 is a schematic diagram showing a spiral wiring formed using the wiring patterns 11 k and 11 m of FIGS. 3 (A) and 3 (B).
- the wiring patterns 11 1 , 11 3 ,..., 11 N-1 (where N is an even number) in the odd-numbered layers have the same shape as the wiring pattern 11 k in FIG.
- the wiring patterns 11 2 , 11 4 ,..., 11 N of the even-numbered layers have the same shape as the wiring pattern 11 m in FIG.
- These wiring patterns 11 1 to 11 N are electrically connected via interlayer connection lines 23 1 to 23 N ⁇ 1 formed by the conductive bumps 20 1 to 20 N ⁇ 1 .
- the effects of the multilayer wiring board 1 and the manufacturing method thereof according to the first embodiment are as follows.
- the separator 12 1 ⁇ 12 N-1 of higher than the glass transition temperature Tg1 the resin substrate 10 1 ⁇ 10 N resin substrate 10 1 ⁇ 10 N and the separators 12 1 at a temperature below the glass transition temperature Tg2 of ⁇ 12 N-1 Therefore, the thermoplastic resin of the separators 12 1 to 12 N-1 can be melted and softened without melting and softening the thermoplastic resin of the resin base materials 10 1 to 10 N.
- the multilayer wiring board 1 having the wiring patterns 11 1 to 11 N having excellent electrical characteristics (low dielectric constant and low dielectric loss) in the high frequency band and good shape accuracy.
- the even-numbered-layer wiring patterns 11 2 , 11 4 ,..., 11 N have an angle of rotation exceeding 360 °, and the odd-numbered-layer wiring patterns 11 1 , 11 formed above and below the circuit pattern. 3 ,..., 11
- the portion facing N-1 can be substantially circular. If the turn angle of the wiring patterns 11 1 to 11 N is less than 360 °, the number of turns corresponding to the turn angle less than 360 ° is reduced, and the inductance of the spiral wiring is reduced. That is, the spiral wiring of this embodiment can be formed without impairing the inductance.
- FIG. 5 is a diagram schematically showing a laminated structure of the multilayer wiring board 2 according to the second embodiment.
- FIG. 6 is a schematic diagram showing an example of the wiring patterns 11 1 to 11 17 constituting the spiral wiring formed in the multilayer wiring board 2.
- the multilayer wiring board 2 of the second embodiment is the same as the multilayer wiring board 1 of the first embodiment except for the positions of the conductive bumps 20 1 to 20 16 and the shapes of the wiring patterns 11 1 to 11 17. It has a configuration and is manufactured in the same process as the multilayer wiring board 1 of the first embodiment.
- Each of the wiring patterns 11 1 to 11 17 is a spiral wiring pattern having a rounding angle exceeding 360 °. Odd resin substrate 10 first layer, 10 3, ..., 10 17 wiring pattern 11 1 formed on, 11 3, ..., 11 17 and the even-numbered resin base layer material 10 2, 10 4, ..., 10 16 on the wiring pattern 11 2, 11 4 formed, ..., and 11 16, has a shape obtained by inverting the other. That is, since the resin base materials 10 1 , 10 3 ,..., 10 17 and the resin base materials 10 2 , 10 4 ,..., 10 16 are alternately arranged, the wiring patterns 11 1 to 11 17 are The front and back are overlapped alternately. Of course, the wiring patterns 11 1 to 11 17 are connected to each other through conductive bumps.
- the conductive bumps 20 1 , 20 3 ,..., 20 N ⁇ 1 (where N is an even number) in the odd-numbered layers are
- the conductive bumps 20 2 , 20 4 ,..., 20 N-2 of the even - numbered layers are formed at positions overlapping with each other when viewed from the stacking direction.
- the thickness may be non-uniform depending on the type of thermoplastic resin used and the thermal pressure conditions.
- the conductive bumps 20 1 to 20 16 are not overlapped with each other when viewed from the stacking direction. Is formed. Further, since the resin base materials 10 1 to 10 16 in which the conductive bumps 20 1 to 20 16 are embedded are 16 layers, the circuit patterns 11 1 to 11 17 are formed with a rounding angle of (360 ° + 360 ° / 16). Thus, the interlayer connection lines 23 1 to 23 16 can be arranged around the central axes of the wiring patterns 11 1 to 11 17 at equal angular intervals. That is, as shown in FIG.
- the wiring patterns 11 1 to 11 17 are electrically connected via the interlayer connection lines 23 1 to 23 16 formed by the conductive bumps 20 1 to 20 16 .
- the interlayer connection lines 23 1 to 23 16 are arranged at an angular interval of about 22.5 ° around the central axis of the wiring patterns 11 1 to 11 17 .
- the conductive bumps 20 1 to 20 16 of the multilayer wiring board 2 of the second embodiment are formed at positions that do not overlap each other when viewed from the stacking direction, uneven thickness is avoided. be able to. Thereby, the rigidity balance of the multilayer wiring board 2 is improved, and the strength is improved.
- the present invention is not limited to this, and the multilayer wiring board 2 may be modified so as to have 18 or more layers.
- the number of layers of the multilayer wiring board 2 is N
- the number of resin base materials 10 in which the conductive bumps 20 are embedded is N ⁇ 1
- the circuit pattern 11 has a circuit angle of (360 ° + 360 ° / By forming as N-1)
- the interlayer connection lines 23 can be arranged around the central axis of the wiring pattern 11 at equal angular intervals.
- 1 odd interlayer connection lines 23, 23 3, 23 5, 23 7, so as to be disposed at an angle interval of approximately 45 ° around the center axis of the wiring patterns 11 1 to 11 8 is formed in two even-numbered inter-layer connection line 23, 23 4, 23 6, it is formed so as to be arranged at equal angular intervals around the center axis of the wiring patterns 11 1 to 11 8.
- both the first and second embodiments have six or more wiring patterns, the present invention is not limited to this.
- As a modification of the first embodiment there is a form of a multilayer wiring board having at least two layers of wiring patterns
- a modification of the second embodiment there is a form of a multilayer wiring board having at least two layers of wiring patterns. Can do.
- the wiring that realizes the inductor may be formed by connecting a plurality of spiral wiring patterns in a spiral shape as shown in FIGS. 4 and 6, but the shape of the wiring pattern is limited to these. It is not a thing.
- the shape may be an arc shape, a square shape or a polygonal shape.
- the multilayer wiring board of the present invention may be provided with a layer other than the resin base material layer and the separator layer forming the wiring pattern described above within a range not inconsistent with the characteristics of the present invention.
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Abstract
Description
図1は、本発明に係る第1の実施形態の多層配線基板1の積層構造を概略的に示す図である。図1に示されるように、多層配線基板1は、セパレータ121,...,12N-1を介して積層された樹脂基材101,...,10Nと、これら樹脂基材101,...,10Nの一方の面にそれぞれ形成された配線パターン111,...,11Nと、これら配線パターン111~11Nを電気的に接続する導電性バンプ201,212,...,20N-1とを含むものである。
次に、本発明に係る第2の実施形態について説明する。図5は、第2の実施形態の多層配線基板2の積層構造を概略的に示す図である。図6は、多層配線基板2内に形成された螺旋状配線を構成する配線パターン111~1117の一例を示す概略図である。第2の実施形態の多層配線基板2は、導電性バンプ201~2016の位置と配線パターン111~1117の形状とを除いて、上記第1の実施形態の多層配線基板1と同じ構成を有し、第1の実施形態の多層配線基板1と同様の工程で製造されるものである。
Claims (20)
- セパレータを介して積層された複数の樹脂基材と、
前記複数の樹脂基材の一方の面にそれぞれ形成された複数の配線パターンと、
前記樹脂基材および前記セパレータを貫通するように形成され、前記複数の配線パターンを電気的に接続する導電性バンプと、
を含み、
前記樹脂基材および前記セパレータは熱融着されており、
前記セパレータは、第1のガラス転移温度を持つ第1の熱可塑性樹脂材料からなり、
前記各樹脂基材は、前記第1のガラス転移温度よりも高い第2のガラス転移温度を持つ第2の熱可塑性樹脂材料からなる、多層配線基板。 - 請求項1に記載の多層配線基板であって、前記導電性バンプは、前記配線パターンのうち隣り合う配線パターンの一方から他方へ突起するように形成されている、多層配線基板。
- 請求項1または2に記載の多層配線基板であって、前記第1および第2の熱可塑性樹脂材料は、それぞれ、互いに異なるガラス転移温度を持つ環状オレフィン系樹脂組成物を主成分として構成されている、多層配線基板。
- 請求項3に記載の多層配線基板であって、前記環状オレフィン系樹脂組成物はノルボルネン系樹脂である、多層配線基板。
- 請求項1から4のうちのいずれか1項に記載の多層配線基板であって、前記導電性バンプは、金,銀,ニッケル,錫,鉛,亜鉛,ビスマス,アンチモンおよび銅よりなる群から選択された1種または2種以上の金属材料からなる、多層配線基板。
- 請求項1から5のうちのいずれか1項に記載の多層配線基板であって、前記複数の配線パターンおよび前記導電性バンプは受動素子を構成している、多層配線基板。
- 請求項6に記載の多層配線基板であって、前記受動素子は、抵抗器、インダクタおよびキャパシタのうちから選択された1種または複数種の回路を含む、多層配線基板。
- 請求項6に記載の多層配線基板であって、前記複数の配線パターンは、螺旋状をなすように前記導電性バンプを介して接続されている、多層配線基板。
- 請求項8に記載の多層配線基板であって、
前記配線パターンは、それぞれ3層以上の前記樹脂基材上に形成されており、
前記導電性バンプは、積層方向から視て互いに異なる位置に形成されている、多層配線基板。 - 請求項9に記載の多層配線基板であって、
前記複数の配線パターンの少なくとも一部は、周回角度が360°を超える渦巻状の配線パターンであり、
かつ前記渦巻状の配線パターンの一端が一の導電性バンプを介して一の配線パターンに接続し、他端が他の導電性バンプを介して他の配線パターンに接続している、多層配線基板。 - 請求項10に記載の多層配線基板であって、
複数の前記渦巻状の配線パターンが表裏交互に重ね合わせられ、かつ各々の端部同士が前記導電性バンプを介して接続されている、多層配線基板。 - 請求項11に記載の多層配線基板であって、
前記導電性バンプが埋め込まれた前記樹脂基材の数はM個(Mは自然数)であり、
前記渦巻状の配線パターンの周回角度は(360°+360°/M)である、多層配線基板。 - N個の樹脂基材(Nは2以上の整数)のうちN-1個の樹脂基材にそれぞれ導電性バンプを埋め込み形成する工程と、
前記N個の樹脂基材の一方の面にそれぞれ配線パターンを形成する工程と、
前記N個の樹脂基材をセパレータを介して重ね合わせるとともに、前記N個の樹脂基材のうち前記導電性バンプが埋め込み形成されていない樹脂基材を最も外側に配置する工程と、
前記N個の樹脂基材がセパレータを介して重ね合わされた後に、前記N個の樹脂基材および前記セパレータを熱融着させて一体化することにより前記導電性バンプを介して前記複数の配線パターンを電気的に接続させる工程と、
を含み、
前記セパレータは、第1のガラス転移温度を持つ第1の熱可塑性樹脂材料からなり、
前記各樹脂基材は、前記第1のガラス転移温度よりも高い第2のガラス転移温度を持つ第2の熱可塑性樹脂材料からなり、
前記N個の樹脂基材および前記セパレータを熱融着させる工程では、前記N個の樹脂基材および前記セパレータは、前記第1のガラス転移温度よりも高く、前記第2のガラス転移温度未満の温度で熱融着される、多層配線基板の製造方法。 - 請求項13に記載の多層配線基板の製造方法であって、前記導電性バンプを埋め込み形成する工程では、前記導電性バンプは、前記N-1個の樹脂基材の一方の面から他方の面の方向へ突起するように形成される、多層配線基板の製造方法。
- 請求項13または14に記載の多層配線基板の製造方法であって、前記第1および第2の熱可塑性樹脂材料は、それぞれ、互いに異なるガラス転移温度を持つ環状オレフィン系樹脂組成物を主成分として構成されている、多層配線基板の製造方法。
- 請求項15に記載の多層配線基板の製造方法であって、前記環状オレフィン系樹脂組成物はノルボルネン系樹脂である、多層配線基板の製造方法。
- 請求項13から16のうちのいずれか1項に記載の多層配線基板の製造方法であって、前記導電性バンプは、金,銀,ニッケル,錫,鉛,亜鉛,ビスマス,アンチモンおよび銅よりなる群から選択された1種または2種以上の金属材料からなる、多層配線基板の製造方法。
- 請求項13から17のうちのいずれか1項に記載の多層配線基板の製造方法であって、
前記配線パターンを形成する工程では、前記N個の樹脂基材の少なくとも一部に、周回角度が360°以上の渦巻状の配線パターンを形成し、
前記N個の樹脂基材および前記セパレータを熱融着させる工程では、前記渦巻状の配線パターンの一端を一の導電性バンプを介して一の配線パターンに接続させ、他端を他の導電性バンプを介して他の配線パターンに接続させる、多層配線基板の製造方法。 - 請求項18に記載の多層配線基板の製造方法であって、
前記配線パターンを形成する工程では、第1の樹脂基材に前記渦巻状の配線パターンを形成し、第2の樹脂基材に前記渦巻状の配線パターンを反転させた配線パターンを形成し、
前記樹脂基材を配置する工程では、前記第1の樹脂基材と前記第2の樹脂基材とを交互に繰り返し配置し、
前記N個の樹脂基材および前記セパレータを熱融着させる工程では、前記第1の樹脂基材の配線パターンの端部と、前記第2の樹脂基材の配線パターンの端部と、を前記導電性バンプを介して接続させる、多層配線基板の製造方法。 - 請求項19に記載の多層配線基板の製造方法であって、
前記N個の樹脂基材および前記セパレータを熱融着させる工程では、前記渦巻状の配線パターンの周回角度を(360°+360°/N-1)として形成する、多層配線基板の製造方法。
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US13/124,751 US8787030B2 (en) | 2008-10-30 | 2009-10-28 | Multilayer circuit board with resin bases and separators |
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JP6397374B2 (ja) * | 2015-07-01 | 2018-09-26 | 日本電信電話株式会社 | 増幅器 |
JP7047713B2 (ja) * | 2018-11-05 | 2022-04-05 | オムロン株式会社 | ロボットアーム及びロボットアームの製造方法 |
CN111970810A (zh) * | 2019-05-20 | 2020-11-20 | 庆鼎精密电子(淮安)有限公司 | 多层树脂基板及其制作方法 |
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US8787030B2 (en) | 2014-07-22 |
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