WO2012046829A1 - 部品内蔵基板およびその製造方法 - Google Patents
部品内蔵基板およびその製造方法 Download PDFInfo
- Publication number
- WO2012046829A1 WO2012046829A1 PCT/JP2011/073176 JP2011073176W WO2012046829A1 WO 2012046829 A1 WO2012046829 A1 WO 2012046829A1 JP 2011073176 W JP2011073176 W JP 2011073176W WO 2012046829 A1 WO2012046829 A1 WO 2012046829A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insulating base
- component
- frame
- resin sheet
- electrode
- Prior art date
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 229920005989 resin Polymers 0.000 claims abstract description 119
- 239000011347 resin Substances 0.000 claims abstract description 119
- 239000004020 conductor Substances 0.000 claims abstract description 75
- 239000000463 material Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 13
- 229920005992 thermoplastic resin Polymers 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 22
- 239000011888 foil Substances 0.000 description 7
- 239000010949 copper Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 229920000106 Liquid crystal polymer Polymers 0.000 description 3
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004697 Polyetherimide Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920001601 polyetherimide Polymers 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- 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
- 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
- H05K1/186—Components encapsulated in the insulating substrate of the printed circuit or incorporated in internal layers of a multilayer circuit manufactured by mounting on or connecting to patterned circuits before or during embedding
-
- 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]
-
- 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
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed 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
- 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
- H05K3/4632—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials laminating thermoplastic or uncured resin sheets comprising printed circuits without added adhesive materials between the sheets
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/095—Conductive through-holes or vias
- H05K2201/09509—Blind vias, i.e. vias having one side closed
- H05K2201/09527—Inverse blind vias, i.e. bottoms outwards in multilayer PCB; Blind vias in centre of PCB having opposed bottoms
-
- 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
- H05K2201/09781—Dummy conductors, i.e. not used for normal transport of current; Dummy electrodes of components
-
- 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
-
- 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
- H05K3/4038—Through-connections; Vertical interconnect access [VIA] connections
- H05K3/4053—Through-connections; Vertical interconnect access [VIA] connections by thick-film techniques
- H05K3/4069—Through-connections; Vertical interconnect access [VIA] connections by thick-film techniques for via connections in organic insulating substrates
-
- 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
-
- 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.
- Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.
- Y10T29/49139—Assembling to base an electrical component, e.g., capacitor, etc. by inserting component lead or terminal into base aperture
Definitions
- the present invention relates to a component-embedded substrate that incorporates an electronic component and a method for manufacturing the same.
- FIG. 8 is a sectional view showing the component built-in substrate.
- the component-embedded substrate 101 is configured by laminating a plurality of insulating layers 102 made of a thermoplastic resin and thermocompression bonding.
- a wiring conductor 103 made of copper foil or the like is formed on a part of the insulating layer 102.
- the wiring conductor 103 includes a land 105 formed on the main surface of the component-embedded substrate and a surface opposite to the main surface by vias 104. Electrically connected.
- An electronic component 106 is built in the component built-in substrate 101.
- the electrode 106 a of the electronic component 106 is electrically connected to the wiring conductor 103 and the land 105 through the via 104.
- the present invention suppresses resin flow outside the frame electrode during thermocompression bonding by providing a frame electrode around the built-in component, and as a result, defects in wiring conductors and vias are suppressed. It is intended to provide a component-embedded substrate.
- the component-embedded substrate according to the present invention is made of a thermoplastic resin and extends in parallel with an insulating base material having a pair of main surfaces, a chip-like electronic component embedded in the insulating base material, and a direction in which the main surface extends.
- the wiring conductor formed inside the insulating base material and the via conductor formed inside the insulating base material when the insulating base material is viewed from the direction perpendicular to the direction in which the main surface of the insulating base material extends, It is characterized by comprising at least one frame-like electrode formed inside the insulating base so as to surround the electronic component.
- the frame-like electrode is formed at a position that does not overlap the electronic component.
- the frame electrode is formed at a position at least partially overlapping the electronic component.
- the wiring conductor and the via conductor are regions surrounded by frame-shaped electrodes when the insulating base is viewed from a direction perpendicular to the direction in which the main surface of the insulating base extends. It is provided in the area outside.
- the wiring conductor and the via conductor outside the frame-shaped electrode, the resin flow in the portion where the wiring conductor and the via conductor are provided is suppressed during thermocompression bonding. As a result, the wiring conductor can suppress the occurrence of via defects.
- the frame electrode is connected to a ground electrode.
- the frame-like electrode functions as the ground by being connected to the ground electrode.
- the frame-like electrode can have a function as an electromagnetic shield.
- the method for manufacturing a component-embedded substrate according to the present invention includes an insulating base material made of a thermoplastic resin and having a pair of main surfaces, a chip-like electronic component embedded in the insulating base material, and a direction in which the main surface extends.
- One or more first resin sheets comprising a wiring conductor formed inside an insulating base so as to extend in parallel with the via conductor and a via conductor formed inside the insulating base.
- the method for manufacturing a component-embedded substrate according to the present invention preferably includes a frame-shaped electrode provided on a surface of the second resin sheet that does not contact the first resin sheet.
- the method for manufacturing a component-embedded substrate according to the present invention preferably includes a method in which the frame electrode is provided so as to be in contact with the first resin sheet.
- the wiring conductor and the via conductor are frame-shaped electrodes when the insulating base is viewed from a direction perpendicular to the direction in which the main surface of the insulating base extends. It is provided in a region outside the surrounded region.
- the wiring conductor and the via conductor outside the frame-shaped electrode, the resin flow in the portion where the wiring conductor and the via conductor are provided is suppressed during thermocompression bonding. As a result, the wiring conductor can suppress the occurrence of via defects.
- the conductor forming step and the frame electrode forming step are preferably performed in the same step.
- productivity is improved by performing the conductor forming step and the frame electrode forming step together.
- the resin flow outside the frame-shaped electrode is suppressed during thermocompression bonding.
- the occurrence of defects in wiring conductors and vias can be suppressed.
- FIG. 4 is a cross-sectional view showing a manufacturing process subsequent to FIG. 3. It is sectional drawing which shows the manufacturing process following FIG. It is the schematic which shows the longitudinal cross-sectional state of the component built-in board
- the component-embedded substrate 20 is formed on the insulating base 12 made of a thermoplastic resin including the via 5, the wiring conductor 7, the electronic component 9, and the frame electrode 3 inside, and the bottom surface that is one main surface of the insulating base 12.
- the electronic component 9 is, for example, a chip-shaped electronic component such as a multilayer chip capacitor in which terminal electrodes are formed at both ends of a laminate in which internal electrodes and ceramic sheets are laminated.
- the insulating substrate 12 is configured by laminating a predetermined number of resin sheets made of thermoplastic resin and bonding them together.
- a cavity 8 is formed in the insulating base 12, and the electronic component 9 is embedded in the cavity 8. (FIG. 1).
- the insulating base 12 When the insulating base 12 is viewed from a direction perpendicular to the direction in which the main surface of the insulating base 12 extends, the insulating base 12 is between the electronic component 9 and the via 5 and the wiring conductor 7.
- a frame-like electrode 3 is disposed around the electronic component 9. The frame electrode 3 is continuously formed without interruption. That is, the electronic component 9 is completely surrounded by the frame electrode 3. (FIG. 2).
- the frame-like electrode 3 is disposed in a region corresponding to the thickness of the electronic component 9 or in the vicinity of this region when the insulating base 12 is viewed from the direction in which the main surface of the insulating base 12 extends. That is, the frame-like electrode 3 is formed on a position overlapping the electronic component 9 and a surface in contact with the electronic component 9 when the insulating base 12 is viewed from the direction in which the main surface of the insulating base 12 extends.
- FIG. 1 two frame-like electrodes 3 are shown, but one or three or more frame-like electrodes 3 may be arranged.
- this frame-like electrode 3 By providing this frame-like electrode 3, it is possible to prevent the resin outside the frame-like electrode 3 from flowing into the gap around the cavity 8 and the electronic component 9 when a plurality of resin sheets are thermocompression bonded. For this reason, in the region outside the frame-like electrode 3, it is difficult for the vias 5 and the wiring conductors 7 to be displaced due to resin flow, and as a result, the occurrence of open defects and short-circuit defects is reduced.
- the wiring conductor 7 is electrically connected to the electrode 11 disposed on the upper surface of the insulating base 12 by the via 5 and the external electrode 10 formed on the bottom surface of the insulating base 12.
- the electronic component 9 is also electrically connected to the external electrode 10 through the via 5.
- One frame-like electrode 3 is electrically connected to a ground electrode 13 formed on the bottom surface of the insulating base 12 by a via 5. By connecting the frame electrode 3 to the ground electrode 13, the frame electrode 3 can function as an electromagnetic shield. (FIG. 1).
- the ground electrode 13 may be provided inside the insulating base material 12.
- a resin sheet 1a made of LCP (liquid crystal polymer) which is a thermoplastic resin is prepared.
- PEEK polyetheretherketone
- PEI polyetherimide
- PPS poniphenylene sulfide
- PI polyimide
- This resin sheet 1a has a conductor foil 4 made of Cu having a thickness of 18 ⁇ m on one side.
- the material of the conductor foil 4 may be Ag, Al, SUS, Ni, Au, or an alloy thereof other than Cu.
- the conductor foil having a thickness of 18 ⁇ m is used.
- the conductor foil 4 may have a thickness of about 3 to 40 ⁇ m so long as a circuit can be formed. (FIG. 3A).
- a via hole 5a is formed by irradiating a carbon dioxide laser on the resin sheet side of the resin sheet 1a. Thereafter, the resin residue remaining in the via hole 5a is removed. (FIG. 3B).
- a resist 6 corresponding to a desired circuit pattern is formed on the conductive foil 4 of the resin sheet 1a by general-purpose photolithography. (FIG. 3C).
- the portion of the conductor foil 4 that is not covered with the resist 6 is etched. Thereafter, the resist 6 is removed to form the frame-shaped electrode 3 and the wiring conductor 7. Although the wiring conductor 7 is shown in a simplified manner in the drawing, it is actually a fine wiring and is formed with high density. (FIG. 3 (d)).
- the via 5 is formed by filling the via hole 5a with conductive paste by screen printing or the like.
- the conductive paste to be filled contains Cu as a main component.
- the conductive paste may contain an appropriate amount of metal powder that forms an alloy layer with the conductor metal of the wiring conductor 7 at a temperature for thermocompression bonding. Since this conductive paste uses Cu as a main component, at least one of Ag, Cu, and Ni and at least one of Sn, Bi, and Zn may be added as this metal component. (FIG. 4 (e)).
- the second resin sheet 2 shown in FIG. 4G is formed by omitting the step of forming the through-hole 8a shown in FIG. 4F in the manufacturing process of the first resin sheet 1 described above. Thus, the second resin sheet 2 is obtained.
- the second resin sheet 2 is turned upside down and used so that the wiring conductor 7 is disposed on the bottom surface of the completed component-embedded substrate.
- the wiring conductor 7 disposed on the bottom surface of the completed component-embedded substrate becomes the external electrode 10 and the ground electrode 13.
- two first resin sheets 1 that are turned upside down are arranged on the second resin sheet 2.
- positioning it arrange
- another second resin sheet 2 is disposed on the first resin sheet 1 and the electronic component 9.
- the second resin sheet 2 is formed on the side opposite to the external electrode 10 formed on the lower surface of the component-embedded substrate after the wiring conductor 7 formed on the second resin sheet 2 is completed, that is, the upper surface of the component-embedded substrate. Arrange it to be on the side.
- another second resin sheet 2 is disposed on the second resin sheet 2.
- the second resin sheet is arranged so that the wiring conductor 7 formed on the resin sheet is on the upper surface side of the component-embedded substrate.
- the wiring conductor 7 formed on the second resin sheet 2 located on the upper surface of the substrate serves as an electrode 11 for mounting other IC components and the like. (FIG. 5 (i)).
- first resin sheet 1 and the second resin sheet 2 are thermocompression bonded at 250 ° C. to 300 ° C.
- thermocompression bonding By thermocompression bonding, the adjacent resin sheets are bonded to each other to form the insulating base 12 and the electronic component 9 and the via 5 are electrically connected.
- the resin inside the frame-shaped electrode 3 flows into the gap between the cavity 8 and the electronic component 9, but by providing the frame-shaped electrode 3, the resin outside the frame-shaped electrode 3 is frame-shaped. It is not affected by the resin flow inside the electrode 3. That is, the flow of the resin outside the frame-shaped electrode 3 is suppressed by the frame-shaped electrode 3. Therefore, it becomes difficult for the vias 5 and the wiring conductors 7 to be displaced due to resin flow, and as a result, the occurrence of open defects and short defects is reduced.
- the surface of the external electrode 10, the ground electrode 13, and the electrode 11 formed on the top and bottom surfaces of the component-embedded substrate 20 is plated with Ni or Au. (FIG. 3 (j)).
- the first resin sheet 1 and the second resin sheet 2 are thermocompression-bonded to form the insulating base material 12, thereby stacking the first resin sheets.
- the interlayer interface between the first and second resin sheets 2 is substantially eliminated.
- the two first resin sheets 1 are laminated.
- the number of the first resin sheets 1 used to form a cavity into which the built-in electronic component 9 can be inserted. Can be changed as appropriate.
- the number of second resin sheets 2 can be changed according to the desired substrate.
- the order of stacking the first resin sheet 1 and the second resin sheet 2 can be changed according to the desired substrate.
- the component-embedded substrate 30 according to the second embodiment includes a frame-like electrode 3A formed inside the insulating base material 12, like the component-embedded substrate 20 according to the first embodiment.
- This frame-shaped electrode 3A is between the electronic component 9 and the via 5 and the wiring conductor 7 when the insulating base 12 is viewed from the direction in which the main surface of the insulating base 12 extends, And it is arrange
- the frame-like electrode 3A is formed at a position that does not overlap the electronic component 9 when viewed from the direction in which the main surface of the insulating base 12 extends. That is, the frame-shaped electrode 3A is formed in the insulating base material 12 positioned on the upper side and the lower side in the stacking direction of the insulating base material 12 relative to the electronic component 9.
- the frame-like electrode 3 ⁇ / b> A is provided in the insulating base material 12 before thermocompression bonding, on the second resin sheet excluding the surface inside the insulating base material 12 and in contact with the electronic component 9.
- the frame-like electrode 3A is disposed one by one on the upper side and the lower side in the stacking direction of the insulating base material 12 relative to the electronic component 9, but the upper-side or lower-side frame-like electrode 3A is shown. Any one of them may be arranged. A plurality of frame-like electrodes 3A may be arranged only on the upper side or the lower side. (Third embodiment)
- a third embodiment of the present invention will be described with reference to FIG.
- symbol is attached
- the frame-like electrode 3B of the component-embedded substrate 40 according to the third embodiment is inside the insulating base 12 in addition to the position corresponding to the frame-like electrode 3 according to the first embodiment. It is also formed at a position where it does not overlap with the electronic component 9 when viewed from the direction in which the main surface extends. That is, the frame-like electrode 3 ⁇ / b> B includes the insulating base 12 before thermocompression bonding that is provided on the second resin sheet excluding the surface in contact with the electronic component 9 inside the insulating base 12. .
- First resin sheet 1a Resin sheet 2: Second resin sheet 3, 3A, 3B: Frame electrode 4: Conductive foil 5: Via 5a: Hole for via 6: Resist 7: Wiring conductor 8: Cavity 8a: Through hole 9: Electronic component 10: External electrode 11: Electrode 12: Insulating base material 13: Ground electrode 20, 30, 40: Component built-in substrate 101: Component built-in substrate 102: Insulating layer 103: Wiring conductor 104: Via 105 : Land 106: Electronic component 106a: Electrode
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Abstract
Description
以下に、本発明の第1の実施形態に係る部品内蔵基板ついて、図1~図2を参照して説明する。
(第2の実施形態)
次に、本発明の第2の実施形態について、図6を参照して説明する。なお、第1の実施形態と同一箇所については、同一の符号を付してその説明を省略する。
(第3の実施形態)
次に、本発明の第3の実施形態について、図7を参照して説明する。なお、第1、2の実施形態と同一箇所については、同一の符号を付してその説明を省略する。
1a:樹脂シート
2:第2の樹脂シート
3、3A、3B:枠状電極
4:導体箔
5:ビア
5a:ビア用の孔
6:レジスト
7:配線導体
8:キャビティ
8a:貫通孔
9:電子部品
10:外部電極
11:電極
12:絶縁基材
13:グランド電極
20、30、40:部品内蔵基板
101:部品内蔵基板
102:絶縁層
103:配線導体
104:ビア
105:ランド
106:電子部品
106a:電極
Claims (10)
- 熱可塑性樹脂からなり、一対の主面を有する絶縁基材と、
前記絶縁基材内部に埋め込まれるチップ状の電子部品と、
前記主面が延びる方向と平行に延びるように、前記絶縁基材内部に形成された配線導体と、
前記絶縁基材内部に形成されたビア導体と、
を備える部品内蔵基板であって、
前記絶縁基材を前記絶縁基材の主面が延びる方向と垂直な方向から見たとき、前記電子部品を囲むように前記絶縁基材内部に形成された少なくとも一つの枠状電極を備えることを特徴とする部品内蔵基板。 - 前記絶縁基材を前記絶縁基材の主面が延びる方向から見たとき、前記枠状電極は、前記電子部品と重ならない位置に形成されるものを含む、請求項1に記載の部品内蔵基板。
- 前記絶縁基材を前記絶縁基材の主面が延びる方向から見たとき、前記枠状電極は、前記電子部品と少なくとも一部が重なる位置に形成されるものを含む、請求項1または請求項2のいずれかに記載の部品内蔵基板。
- 前記配線導体および前記ビア導体は、前記絶縁基材を前記絶縁基材の主面が延びる方向と垂直な方向から見たとき、前記枠状電極で囲まれる領域よりも外側の領域に設けられる、請求項1ないし請求項3のいずれか一項に記載の部品内蔵基板。
- 前記絶縁基材内部または前記絶縁基材の一対の主面の少なくとも一方に形成されたグランド電極をさらに備え、
前記枠状電極は、前記グランド電極に接続されている、請求項1ないし請求項4のうちいずれか一項に記載の部品内蔵基板。 - 熱可塑性樹脂からなり一対の主面を有する絶縁基材と、前記絶縁基材内部に埋め込まれたチップ状の電子部品と、前記主面が延びる方向と平行に延びるように前記絶縁基材内部に形成された配線導体と、前記絶縁基材内部に形成されたビア導体と、
を備える部品内蔵基板の製造方法であって、
1枚以上の第1の樹脂シートと、複数の第2の樹脂シートとを準備する樹脂シート準備工程と、
前記第1の樹脂シートおよび前記第2の樹脂シートのうち、所定の樹脂シートに前記配線導体、前記ビア導体を形成する導体形成工程と、
前記第1の樹脂シートまたは前記絶縁基材内部の前記第2の樹脂シートの少なくとも一方に、少なくとも一つの枠状電極を形成する、枠状電極形成工程と、
前記第1の樹脂シートに前記電子部品を収納するための貫通孔を形成する貫通孔形成工程と、
前記第1の樹脂シートおよび前記第2の樹脂シートの積層方向から見たとき前記枠状電極が前記電子部品を囲むように前記貫通孔内部に前記電子部品を収納しつつ、前記貫通孔の2つの開口面が前記第2の樹脂シートで覆われるように、前記第1の樹脂シートおよび前記第2の樹脂シートを積層する樹脂シート積層工程と、
前記第1の樹脂シートと前記第2の樹脂シートとを加熱圧着することにより、樹脂シートの積層体である前記絶縁基材を得る加熱圧着工程と、
を備えることを特徴とする部品内蔵基板の製造方法。 - 前記枠状電極は、前記第2の樹脂シートのうち、前記第1の樹脂シートに接しない面に設けられるものを含む、請求項6に記載の部品内蔵基板の製造方法。
- 前記枠状電極は、前記第1の樹脂シートに接するように設けられるものを含む、請求項6または請求項7に記載の部品内蔵基板の製造方法。
- 前記配線導体および前記ビア導体は、前記絶縁基材を前記絶縁基材の主面が延びる方向と垂直な方向から見たとき、前記枠状電極で囲まれる領域よりも外側の領域に設けられる、請求項6ないし請求項8のうちいずれか一項に記載の部品内蔵基板の製造方法。
- 前記導体形成工程と、前記枠状電極形成工程とは、同一の工程で行なわれる、請求項6ないし請求項9のうちいずれか一項に記載の部品内蔵基板の製造方法。
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