WO2020004567A1 - 電子素子搭載用基板、電子装置および電子モジュール - Google Patents
電子素子搭載用基板、電子装置および電子モジュール Download PDFInfo
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- WO2020004567A1 WO2020004567A1 PCT/JP2019/025658 JP2019025658W WO2020004567A1 WO 2020004567 A1 WO2020004567 A1 WO 2020004567A1 JP 2019025658 W JP2019025658 W JP 2019025658W WO 2020004567 A1 WO2020004567 A1 WO 2020004567A1
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- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W40/00—Arrangements for thermal protection or thermal control
- H10W40/20—Arrangements for cooling
- H10W40/25—Arrangements for cooling characterised by their materials
- H10W40/255—Arrangements for cooling characterised by their materials having a laminate or multilayered structure, e.g. direct bond copper [DBC] ceramic substrates
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
- H05K1/0204—Cooling of mounted components using means for thermal conduction connection in the thickness direction of the substrate
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0306—Inorganic insulating substrates, e.g. ceramic, glass
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- H10W40/00—Arrangements for thermal protection or thermal control
- H10W40/20—Arrangements for cooling
- H10W40/22—Arrangements for cooling characterised by their shape, e.g. having conical or cylindrical projections
- H10W40/226—Arrangements for cooling characterised by their shape, e.g. having conical or cylindrical projections characterised by projecting parts, e.g. fins to increase surface area
- H10W40/228—Arrangements for cooling characterised by their shape, e.g. having conical or cylindrical projections characterised by projecting parts, e.g. fins to increase surface area the projecting parts being wire-shaped or pin-shaped
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- H10W40/00—Arrangements for thermal protection or thermal control
- H10W40/20—Arrangements for cooling
- H10W40/25—Arrangements for cooling characterised by their materials
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- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/611—Insulating or insulated package substrates; Interposers; Redistribution layers for connecting multiple chips together
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- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/62—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their interconnections
- H10W70/63—Vias, e.g. via plugs
- H10W70/635—Through-vias
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- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/62—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their interconnections
- H10W70/65—Shapes or dispositions of interconnections
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- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/67—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their insulating layers or insulating parts
- H10W70/68—Shapes or dispositions thereof
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- 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
- H05K2201/0183—Dielectric layers
- H05K2201/0187—Dielectric layers with regions of different dielectrics in the same layer, e.g. in a printed capacitor for locally changing the dielectric properties
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- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/032—Materials
- H05K2201/0323—Carbon
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- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/04—Soldering or other types of metallurgic bonding
- H05K2203/049—Wire bonding
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- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/67—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their insulating layers or insulating parts
- H10W70/69—Insulating materials thereof
- H10W70/692—Ceramics or glasses
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- H10W72/00—Interconnections or connectors in packages
- H10W72/071—Connecting or disconnecting
- H10W72/073—Connecting or disconnecting of die-attach connectors
- H10W72/07331—Connecting techniques
- H10W72/07336—Soldering or alloying
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- H10W72/00—Interconnections or connectors in packages
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- H10W72/00—Interconnections or connectors in packages
- H10W72/30—Die-attach connectors
- H10W72/351—Materials of die-attach connectors
- H10W72/352—Materials of die-attach connectors comprising metals or metalloids, e.g. solders
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- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/541—Dispositions of bond wires
- H10W72/5449—Dispositions of bond wires not being orthogonal to a side surface of the chip, e.g. fan-out arrangements
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- H10W72/00—Interconnections or connectors in packages
- H10W72/851—Dispositions of multiple connectors or interconnections
- H10W72/874—On different surfaces
- H10W72/884—Die-attach connectors and bond wires
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- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/754—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between a chip and a stacked insulating package substrate, interposer or RDL
Definitions
- the present invention relates to an electronic element mounting substrate, an electronic device, and an electronic module.
- an electronic element mounting substrate includes an insulating substrate having a first main surface, a second main surface, and side surfaces, an electronic element mounting portion located on the first main surface and the second main surface of the insulating substrate, and a metal layer.
- An electronic device is obtained by mounting an electronic element on an electronic element mounting portion of an electronic element mounting substrate (see Japanese Patent Application Laid-Open No. 2013-175508).
- An electronic element mounting substrate includes a first substrate having a first main surface and a second main surface located on a side opposite to the first main surface, and is located inside the first substrate in a plan view.
- a second substrate made of a carbon material and having a third main surface located on the first main surface side in a thickness direction and a fourth main surface located on a side opposite to the third main surface;
- a first mounting portion for mounting a first electronic element which is located on the first main surface side in the thickness direction, and wherein the second substrate and the third substrate are respectively Has a direction in which heat conduction is small and a direction in which heat conduction is large, and the second substrate and the third substrate are Intersect the direction perpendicular to each other small thermal conductivity in the respectively larger direction of the heat conduction is positioned as mutually
- An electronic device includes the electronic element mounting substrate described in the above configuration, and a first electronic element mounted on a first mounting portion of the electronic element mounting substrate.
- the electronic module according to the present disclosure includes the electronic device having the above configuration, and a module substrate to which the electronic device is connected.
- FIG. 2A is a top view illustrating the electronic element mounting substrate according to the first embodiment
- FIG. 2B is a bottom view of FIG.
- FIG. 2 is an exploded perspective view of a first substrate, a second substrate, and a third substrate of the electronic element mounting substrate shown in FIG. 1.
- FIG. 2 is a vertical cross-sectional view taken along line AA of the electronic element mounting substrate shown in FIG.
- FIG. 2 is a top view illustrating a state where electronic elements are mounted on the electronic element mounting substrate illustrated in FIG. 1.
- (A) is a top view which shows the electronic element mounting substrate in 2nd Embodiment
- (b) is a bottom view of (a).
- FIG. 1 is a top view illustrating the electronic element mounting substrate according to the first embodiment
- FIG. 2B is a bottom view of FIG.
- FIG. 2 is an exploded perspective view of a first substrate, a second substrate, and a third substrate of the electronic element mounting substrate shown in FIG. 1.
- FIG. 2 is a vertical
- FIG. 6 is an exploded perspective view of a first substrate, a second substrate, and a third substrate of the electronic element mounting substrate shown in FIG. 5.
- FIG. 6 is a vertical sectional view of the electronic element mounting substrate shown in FIG.
- FIG. 6 is a top view illustrating a state in which electronic elements are mounted on the electronic element mounting substrate illustrated in FIG. 5.
- FIG. 9 is a longitudinal sectional view taken along line AA of the electronic device mounted on the electronic device mounting substrate shown in FIG. 8.
- (A) is a top view which shows the electronic element mounting substrate in 3rd Embodiment
- (b) is a bottom view of (a).
- FIG. 11 is an exploded perspective view of a first substrate, a second substrate, and a third substrate of the electronic element mounting substrate shown in FIG.
- FIG. 10A is a longitudinal sectional view taken along line AA of the electronic element mounting board shown in FIG. 10A
- FIG. 10B is a longitudinal sectional view taken along line BB.
- (A) is a top view which shows the electronic element mounting substrate in 4th Embodiment
- (b) is a bottom view of (a).
- FIG. 14 is an exploded perspective view of a first substrate, a second substrate, and a third substrate of the electronic element mounting substrate shown in FIG. 13.
- 13A is a vertical cross-sectional view taken along line AA of the electronic element mounting substrate shown in FIG. 13A
- FIG. 13B is an electronic element mounting substrate shown in FIG. 3 is a vertical sectional view taken along line BB of FIG.
- FIG. 14 is a top view showing a state where electronic elements are mounted on the electronic element mounting board shown in FIG. 13.
- 16A is a longitudinal sectional view taken along line AA of the electronic device mounted on the electronic device mounting substrate shown in FIG. 16
- FIG. 16B is a longitudinal sectional view of the electronic device mounted substrate shown in FIG.
- FIG. 4 is a vertical cross-sectional view taken along line BB in a state where an electronic element is mounted on a substrate.
- (A) is a top view which shows the electronic element mounting substrate in 5th Embodiment
- (b) is a bottom view of (a).
- FIG. 19 is an exploded perspective view of a first substrate, a fourth substrate, a fifth substrate, a second substrate, and a third substrate of the electronic element mounting substrate shown in FIG. 18.
- FIG. 19 is a vertical cross-sectional view taken along line AA of the electronic element mounting substrate shown in FIG.
- FIG. 19 is a top view showing a state where electronic elements are mounted on the electronic element mounting substrate shown in FIG. 18.
- FIG. 22 is a longitudinal sectional view of the electronic device shown in FIG. 21 taken along line AA.
- the electronic element mounting substrate 1 includes a first substrate 11, a second substrate 12, and a third substrate 13, as in the examples shown in FIGS.
- the electronic device includes a substrate 1 for an electronic element or the like, an electronic element 2 (also referred to as a first electronic element 2) mounted on a mounting portion 1a (also referred to as a first mounting portion 1a) of the electronic element mounting substrate 1, and an electronic device. And a wiring board on which the element mounting board 1 is mounted.
- the electronic device is connected to a connection pad on a module substrate constituting the electronic module, for example, using a bonding material.
- the electronic element mounting substrate 1 includes a first substrate 11 having a first main surface and a second main surface opposite to the first main surface, and a first substrate 11 located in the first substrate 11 in plan view.
- a second substrate 12 made of a carbon material and having a third main surface positioned on the first main surface side in the thickness direction and a fourth main surface positioned on the opposite side to the third main surface;
- a fifth main surface located between the first main surface side in the thickness direction and a sixth main surface opposite to the fifth main surface, which is located between the first substrate and the second substrate; It has a third substrate 13 and a mounting portion 1a for mounting an electronic element, which is located on the first main surface side in the thickness direction.
- the second substrate 12 and the third substrate 13 each have a direction in which heat conduction is small and a direction in which heat conduction is large.
- the second substrate 12 and the third substrate 13 have a direction in which heat conduction is small in each. They are perpendicular to each other, and the directions of large heat conduction in each of them are perpendicular to each other.
- the electronic element 2 is mounted on an xy plane in a virtual xyz space.
- the upward direction refers to the positive direction of the virtual z-axis.
- the outer surface of the first substrate 11 and the inner surface of the through-hole 11 a of the first substrate 11 that are not visible in a perspective view are indicated by dotted lines.
- the second substrate 12 and the third substrate 13 are shaded in the examples shown in FIGS.
- the first substrate 11 has a first main surface (upper surface in FIGS. 1 to 4) and a second main surface (lower surface in FIGS. 1 to 4). The first main surface and the second main surface are located on opposite sides.
- the first substrate 11 is formed of a single layer or a plurality of insulating layers, and is a rectangular plate having two pairs of opposing sides (four sides) with respect to each of the first main surface and the second main surface in plan view. Shape.
- the first substrate 11 has a through hole 11a penetrating from the first main surface to the second main surface.
- the through hole 11a has a polygonal shape such as a square shape, a circular shape, or the like in plan view.
- the first substrate 11 functions as a support for supporting the second substrate 2 and the third substrate 13 and the electronic element 2.
- the first substrate 11 for example, ceramics such as an aluminum oxide sintered body (alumina ceramics), an aluminum nitride sintered body, a mullite sintered body, or a glass ceramic sintered body can be used. If the first substrate 11 is, for example, a sintered body of aluminum nitride, the first substrate 11 is suitable for a raw material powder such as aluminum nitride (AlN), erbium oxide (Er 2 O 3 ), yttrium oxide (Y 2 O 3 ). An organic binder and a solvent are added and mixed to produce a slurry.
- AlN aluminum nitride
- Er 2 O 3 erbium oxide
- Y 2 O 3 yttrium oxide
- the above-mentioned slurry is formed into a sheet by employing a conventionally known doctor blade method, calender roll method, or the like to produce a ceramic green sheet. If necessary, a plurality of ceramic green sheets are laminated and fired at a high temperature (about 1800 ° C.), whereby the first substrate 11 including a single layer or a plurality of insulating layers is manufactured.
- the second substrate 12 has a third main surface (upper surface in FIGS. 1 to 4) and a fourth main surface (lower surface in FIGS. 1 to 4).
- the third main surface and the fourth main surface are located on opposite sides.
- the third substrate 13 has a fifth main surface (upper surface in FIGS. 1 to 4) and a sixth main surface (lower surface in FIGS. 1 to 4).
- the fifth main surface and the sixth main surface are located on opposite sides.
- the second substrate 12 and the third substrate 13 are embedded in the first substrate 11 as in the examples shown in FIGS.
- the second substrate 12 and the third substrate 13 are adjacent to each other in a plan view, that is, as in the examples shown in FIGS. It is located between the substrate 12.
- the second substrate 12 and the third substrate 13 are made of, for example, a carbon material, and are formed as a structure in which graphene in which six-membered rings are connected by covalent bonds is laminated. Each surface is made of a material joined by van der Waals force.
- the metal layer 14 is provided on the first main surface of the first substrate 11.
- the metal layer 14 is used as a connection portion of the connection member 3 such as a bonding wire, and is for electrically connecting the electronic element 2 to a connection pad of the module substrate.
- the metal layer 14 includes a thin film layer and a plating layer.
- the thin film layer has, for example, an adhesion metal layer and a barrier layer.
- the close contact metal layer constituting the thin film layer is formed on the first main surface of the first substrate 11.
- the adhesion metal layer is made of, for example, tantalum nitride, nickel-chromium, nickel-chromium-silicon, tungsten-silicon, molybdenum-silicon, tungsten, molybdenum, titanium, chromium, etc., and is formed by vapor deposition, ion plating, sputtering, etc.
- the thin film is adhered to the first main surface of the first substrate 11 or the eighth main surface of the fourth substrate 15.
- the first substrate 11 or the fourth substrate 15 is installed in a film formation chamber of a vacuum evaporation apparatus, and a metal piece serving as an adhesion metal layer is provided to an evaporation source in the film formation chamber.
- the inside of the film formation chamber is evacuated (at a pressure of 10 ⁇ 2 Pa or less), and the metal piece placed in the deposition source is heated and deposited.
- a layer of a thin-film metal to be an adhesion metal layer is formed.
- an excess thin-film metal layer is removed by etching to form an adhesive metal layer.
- a barrier layer is deposited on the upper surface of the adhesion metal layer, and the barrier layer has good adhesion and wettability with the adhesion metal layer and the plating layer, and firmly joins the adhesion metal layer and the plating layer, and also forms a plating layer on the adhesion metal layer. It acts to prevent interdiffusion with the layer.
- the barrier layer is made of, for example, nickel-chromium, platinum, palladium, nickel, cobalt, or the like, and is adhered to the surface of the adhesion metal layer by a thin film forming technique such as an evaporation method, an ion plating method, and a sputtering method.
- the thickness of the adhesion metal layer is preferably about 0.01 to 0.5 ⁇ m. If the thickness is less than 0.01 ⁇ m, it tends to be difficult to firmly adhere the adhesion metal layer on the first substrate 11. If it exceeds 0.5 ⁇ m, the adhesion metal layer is likely to peel off due to internal stress during the formation of the adhesion metal layer. Further, the thickness of the barrier layer is preferably about 0.05 to 1 ⁇ m. When the thickness is less than 0.05 ⁇ m, defects such as pinholes tend to be generated, and it tends to be difficult to function as a barrier layer. If it exceeds 1 ⁇ m, the barrier layer is likely to peel off due to internal stress during film formation.
- the plating layer is applied to the exposed surface of the thin film layer by an electrolytic plating method or an electroless plating method.
- the plating layer is made of a metal having excellent corrosion resistance, such as nickel, copper, gold or silver, and excellent connectivity with connection members.
- a nickel plating layer having a thickness of about 0.5 to 5 ⁇ m and a gold plating layer having a thickness of about 0.1 to 3 ⁇ m are provided. Layers are sequentially applied. As described above, corrosion of the metal layer 14 can be effectively suppressed, and the bonding between the metal layer 14 and the connection member 3 can be strengthened.
- a metal layer such as copper (Cu) or gold (Au) may be arranged on the barrier layer so that the plating layer is formed well.
- the above-mentioned metal layer is formed by the same method as the thin film layer.
- the first substrate 11 is preferably made of an aluminum nitride sintered body having excellent thermal conductivity.
- the first substrate 11 and the second substrate 12 are bonded to each other by bonding the inner surface of the through-hole 11a of the first substrate 11 and the outer surface of the second substrate 12 with an active brazing material such as a TiCuAg alloy or TiSnAgCu.
- the first substrate 11 and the third substrate 13 are bonded to each other by bonding the inner surface of the through hole 11a of the first substrate 11 and the outer surface of the third substrate 13 with a bonding material made of an active brazing material such as a TiCuAg alloy or TiSnAgCu.
- the bonding material is formed to a thickness of about 10 ⁇ m between the first substrate 11 and the second substrate 12, or between the first substrate 11 and the third substrate 13.
- the first substrate 11 has a rectangular frame shape in plan view, and has a through hole 11a for embedding the second substrate 12 and the third substrate 13.
- the second substrate 12 has a square shape in plan view.
- the third substrate 13 has a square shape in plan view.
- the square shape is a square shape such as a square shape and a rectangular shape.
- the first substrate 11 has a square frame shape
- the second substrate 12 and the third substrate 13 have a rectangular shape
- a square composite substrate is formed.
- the substrate thickness T1 of the first substrate 11 is, for example, about 100 ⁇ m to 2000 ⁇ m
- the substrate thickness T2 of the second substrate 12 is, for example, about 100 ⁇ m to 2000 ⁇ m
- the substrate thickness T3 of the third substrate 13 is, for example, about 100 ⁇ m to 2000 ⁇ m.
- the thickness T1 of the first substrate 11 and the thickness T2 of the second substrate 12 are formed to be substantially the same (0.9T1 ⁇ T2 ⁇ 1.1T1).
- the thickness T1 of the first substrate 11 and the thickness T3 of the third substrate 13 are formed to be substantially the same (0.9T1 ⁇ T3 ⁇ 1.1T1).
- a metal layer 14 is provided on the first main surface of the first substrate 11 to provide an electronic device.
- An element mounting substrate 1 is formed.
- the thermal conductivity ⁇ of the first substrate 11 is substantially constant in the x direction and the y direction in the plane direction, and the z direction in the thickness direction of the first substrate 11 is equivalent to the x direction and the y direction in the plane direction ( ⁇ x ⁇ ⁇ y ⁇ ⁇ z).
- a substrate having a thermal conductivity ⁇ of about 100 to 200 W / m ⁇ K is used as the first substrate 11.
- the thermal conductivity ⁇ 1 of the second substrate 12 is different in magnitude between the x direction and the y direction in the plane direction of the second substrate 12.
- the thermal conductivity ⁇ of the second substrate 12 the x direction in the plane direction and the z direction in the thickness direction are equivalent, and the y direction in the plane direction is different.
- the relationship between the thermal conductivity ⁇ x1, ⁇ y1, and ⁇ z1 in each direction of the second substrate 12 is “thermal conductivity ⁇ x1 ⁇ thermal conductivity ⁇ z1 >> thermal conductivity ⁇ y1”.
- the thermal conductivity ⁇ x1 and the thermal conductivity ⁇ z1 of the second substrate 12 are about 1000 W / m ⁇ K
- the thermal conductivity ⁇ y1 of the second substrate 12 is about 4 W / m ⁇ K.
- the thermal conductivity ⁇ 2 of the third substrate 13 is different in magnitude between the x direction and the y direction in the plane direction of the third substrate 13.
- the thermal conductivity ⁇ of the third substrate 13 is the same in the y direction in the plane direction and the z direction in the thickness direction, and different in the x direction in the plane direction.
- the relationship between the thermal conductivity ⁇ x2, ⁇ y2, ⁇ z2 in each direction of the third substrate 13 is “thermal conductivity ⁇ y2 ⁇ thermal conductivity ⁇ z2 >> thermal conductivity ⁇ x2”.
- the thermal conductivity ⁇ y2 and the thermal conductivity ⁇ z2 of the third substrate 13 are about 1000 W / m ⁇ K, and the thermal conductivity ⁇ x1 of the third substrate 13 is about 4 W / m ⁇ K.
- the thermal conductivity ⁇ 1 of the second substrate 12 and the thermal conductivity ⁇ 2 of the third substrate 13 are different between a direction in which the thermal conductivity is large and a direction in which the thermal conductivity is small.
- any of the thermal conductivity ⁇ x, ⁇ y, ⁇ z, ⁇ x1, ⁇ y1, ⁇ z1, ⁇ x2, ⁇ y2, ⁇ z2 are omitted are included.
- an electronic device By mounting the electronic element 2 on the mounting portion 1a of the second substrate 12 of the electronic element mounting substrate 1, an electronic device can be manufactured.
- the electronic device may be manufactured by mounting the electronic element mounting substrate 1 on which the electronic element 2 is mounted on a wiring board or an electronic element mounting package.
- the electronic element 2 mounted on the electronic element mounting substrate 1 is, for example, a light emitting element such as an LD (Laser Diode) or an LED (Light Emitting Diode) or a light receiving element such as a PD (Photo Diode).
- the electrode of the electronic element 2 and the metal layer 14 are connected via the connecting member 3 such as a bonding wire.
- the connecting member 3 such as a bonding wire.
- the wiring substrate or the electronic element mounting package should use an insulating base made of ceramics or the like, for example, like the first substrate 11. And have a wiring conductor on the surface.
- the metal layer 14 of the electronic element mounting substrate 1 and the wiring conductor of the wiring substrate or the electronic element mounting package are electrically connected. Connected to.
- the first substrate 11 having the first main surface and the second main surface located on the opposite side to the first main surface and the first substrate 11 in the plan view
- a second substrate 12 which is made of a carbon material and has a third main surface located on the first main surface side in the thickness direction and a fourth main surface located on the opposite side to the third main surface
- a third substrate 13 having a surface, and a mounting portion 1a on the first main surface side in the thickness direction, on which the electronic element 2 is mounted.
- the second substrate 12 and the third substrate 13 have a small heat conduction direction and a large heat conduction direction. Small directions perpendicular to each other intersection (direction of direction ⁇ x2 of ⁇ y1), the position to which (the direction of the direction ⁇ y2 of Ramudaekkusu1) as large direction of the heat conduction intersect perpendicular to each other in each.
- the heat of the electronic element 2 is transferred to the direction in which the thermal conductivity of the second substrate 12 is large (the direction of ⁇ x1) and the thermal conductivity of the third substrate 13. Since heat can be dispersed and transmitted in different directions in a plan view in a direction with a higher rate (direction of ⁇ y2), the electronic element mounting substrate 1 having excellent heat conduction and excellent reliability can be obtained. .
- the third substrate 13 has a rectangular shape, and in a plan view, the second substrate 12 has larger heat conduction in the direction perpendicular to the longitudinal direction of the third substrate 13 than in the longitudinal direction of the third substrate 13.
- the third substrate 13 has greater heat conduction in the longitudinal direction than in the direction perpendicular to the longitudinal direction.
- Heat is easily transmitted in a direction perpendicular to the direction in which the second substrate 12 is adjacent, and the heat transfer in the direction in which the second substrate 12 is adjacent in a plan view transfers heat to a predetermined surrounding area facing the second substrate 12. This facilitates the heat transfer to a predetermined region (such as a heat radiating portion to the outside), so that the electronic element mounting substrate 1 having excellent reliability can be obtained.
- a predetermined region such as a heat radiating portion to the outside
- the third substrate 13 When the third substrate 13 is positioned so as to sandwich the second substrate 12 in a plan view, as in the examples shown in FIGS. 5 to 9 described later, the second substrate 12 and the third substrate 13
- the heat of the electronic device 2 generated on the third substrate 13 is smaller than the direction in which the second substrate 12 is sandwiched between two opposite sides of the electronic device 2. Since the heat is easily transmitted in a direction in which the substrate 13 intersects the second substrate 12 perpendicularly, the heat transfer from the outer edge of the electronic element 2 located on the third substrate 13 to the center of the electronic element 2 is suppressed. In addition, it is possible to suppress a decrease in the function of the electronic element 2 and to effectively operate the electronic element 2 for a long time.
- the second substrate 12 has a greater thermal conductivity in the thickness direction of the second substrate 12 than the thermal conductivity in the longitudinal direction of the third substrate 13, and the third substrate 13 has a greater thermal conductivity in a direction perpendicular to the longitudinal direction. Has high thermal conductivity.
- the surface of the second substrate 12 and the surface of the third substrate 13 are opposed to each other.
- the second substrate 12 opposed to the surface of the third substrate 13 is actuated.
- Heat can easily be transmitted to a predetermined surrounding area facing the second substrate 12, and can be easily transmitted to a predetermined area (radiation portion to the outside, etc.).
- An excellent electronic element mounting substrate 1 can be obtained.
- the heat of the light emitting element mounted on the mounting portion 1a located on the first main surface side can be radiated well, and the light emitting element can emit light satisfactorily.
- the mounting substrate 1 can be used.
- the electronic device mounting substrate 1 having the above configuration and the electronic device 2 mounted on the mounting portion 1a of the electronic device mounting substrate 1 have long-term reliability. It is possible to provide an electronic device having excellent characteristics.
- the electronic device of the present embodiment is connected to the metal layer 14 of the electronic element mounting substrate 1 and the connection pads of the module substrate via a bonding material such as solder to form an electronic module.
- the electronic element 2 is electrically connected to the connection pads of the module substrate.
- the electronic device When the electronic device has a wiring board or an electronic element storage package on which the electronic element mounting board 1 is mounted, the wiring conductors of the wiring board or the electronic element storage package and the connection pads of the module substrate are provided. It is connected via a bonding material such as solder to form an electronic module. As described above, the electronic element 2 is electrically connected to the connection pads of the module substrate.
- the electronic device having the above configuration and the module substrate to which the electronic device is connected have excellent long-term reliability.
- the metal layer 14 provided on the first main surface of the first substrate 11 is formed by a thin film method.
- the metal layer 14 is formed by using a conventionally known cofire method or postfire method. It does not matter.
- the third substrate 13 projects from the second substrate 12 in the longitudinal direction of the third substrate in plan view. The same applies to the examples of FIGS.
- the third substrate 13 has a rectangular shape, and the third substrate 13 projects from the second substrate 12 in the longitudinal direction of the third substrate 13 in plan view. To the outside of the electronic element mounting substrate 1 more easily, and the heat near the corner of the second substrate 12 in contact with the third substrate 13 can be reduced. Heat can be easily transferred to a predetermined region via the third substrate 13, and the electronic element mounting substrate 1 having excellent reliability can be obtained.
- the third substrate 13 may have both ends protruding in the longitudinal direction of the third substrate 13 from the second substrate 12, the positive end of the virtual y-axis or the negative end of the virtual y-axis. However, it may project from the second substrate 12 in the longitudinal direction of the third substrate 13.
- the second substrate 12 has a greater thermal conductivity in the thickness direction of the second substrate 12 than the thermal conductivity in the longitudinal direction of the third substrate 13, and the third substrate 13 has a greater thermal conductivity in a direction perpendicular to the longitudinal direction. Has high thermal conductivity.
- the surface of the second substrate 12 and the surface of the third substrate 13 are opposed to each other.
- the second substrate 12 opposed to the surface of the third substrate 13 is actuated.
- Heat can easily be transmitted to a predetermined surrounding area facing the second substrate 12, and can be easily transmitted to a predetermined area (radiation portion to the outside, etc.).
- An excellent electronic element mounting substrate 1 can be obtained.
- an electronic element mounting substrate capable of well dissipating heat of the light emitting element mounted on the mounting portion 1a of the second substrate 12 and emitting light from the light emitting element satisfactorily. It can be 1.
- the first substrate 11 has a rectangular frame shape in plan view, and has a through hole 11a for embedding the second substrate 12 and the third substrate 13.
- the second substrate 12 has a square shape in plan view.
- the third substrate 13 has a square shape in plan view.
- the third substrate 13 protrudes from the second substrate 12 in the longitudinal direction of the third substrate 13, and the length L2 of the third substrate 13 is longer than the length L1 of the second substrate 12 (L2> L1). .
- a square composite substrate is formed.
- the first substrate 11 has a square frame shape
- the second substrate 12 and the third substrate 13 have a rectangular shape
- a square composite substrate is formed.
- the length L2 in the longitudinal direction of the third substrate 13 is longer than the length L3 of a region such as the plurality of metal layers 14 arranged along the longitudinal direction of the third substrate 13 (L2> L3), Since the heat transferred from the second substrate 12 to the third substrate 13 is transferred to a region outside the region such as the metal layer 14, the heat transfer to the region such as the plurality of metal layers 14 is suppressed. Heat can be easily transferred to a predetermined region through the substrate 13, and the electronic element mounting substrate 1 having excellent reliability can be obtained.
- the plurality of metal layers 14 It is possible to suppress heat transfer to the region side, facilitate heat transfer to a predetermined region via the third substrate 13, and obtain the electronic element mounting substrate 1 having excellent reliability.
- the electronic element mounting substrate 1 of the second embodiment can be manufactured using the same manufacturing method as the electronic element mounting substrate 1 of the above-described embodiment.
- the electronic element mounting substrate 1 according to the third embodiment of the present disclosure differs from the electronic element mounting substrate 1 according to the above-described embodiment in that the second electronic element 3 is located on the second main surface side in the thickness direction.
- the second substrate 12 has a point that, in a plan view, the heat conduction in the plane direction is larger than the heat conduction in the thickness direction.
- the electronic element mounting substrate 1 has a third substrate 13 located in a frame shape between the second substrate 12 and the third substrate 13 in plan view.
- the third substrate 13 located in a frame shape surrounds the second substrate 12.
- two third substrates 13 (thin hatching in FIGS. 10 and 11) opposed to each other in the virtual x-axis direction have a thermal conductivity ⁇ 2
- the two third substrates 13 (dark hatching in FIGS. 10 and 11) facing each other in the y-axis direction have a thermal conductivity of ⁇ 3.
- the thermal conductivity ⁇ of the second substrate 12, the thermal conductivity ⁇ 2 of the third substrate 13, and the thermal conductivity ⁇ 3 of the third substrate 13 correspond to a direction in which the thermal conductivity is large and a direction in which the thermal conductivity is small, respectively. Is different.
- the thermal conductivity ⁇ 3 of the third substrate 13 is different in magnitude between the x direction and the y direction in the plane direction of the third substrate 13.
- the relationship between the thermal conductivity ⁇ x3, ⁇ y3, ⁇ z3 in each direction of the third substrate 13 is “thermal conductivity ⁇ x3 ⁇ thermal conductivity ⁇ z3 >> thermal conductivity ⁇ y3”.
- the thermal conductivity ⁇ 3 of the third substrate 13 the x direction in the plane direction and the z direction in the thickness direction are equivalent, and the y direction in the plane direction is different.
- the thermal conductivity ⁇ x3 and the thermal conductivity ⁇ z3 of the third substrate 13 are about 1000 W / m ⁇ K, and the thermal conductivity ⁇ y3 of the third substrate 13 is about 4 W / m ⁇ K.
- some of the thermal conductivity ⁇ x3, ⁇ y3, ⁇ z3 are omitted.
- It has a second mounting portion 1b on the second main surface side in the thickness direction, on which the second electronic element 3 is mounted, and the second substrate 12 has greater heat conduction in the plane direction than in the thickness direction. Therefore, when the first electronic element 2 is mounted on the first mounting part 1a and the second electronic element 3 is mounted on the second mounting part 1b and operated, heat is generated from the first electronic element 2 and the second electronic element 3. This facilitates the transfer of the generated heat from the first mounting portion 1a and the second mounting portion 1b located on opposite sides to the outer peripheral side of the first mounting portion 1a and the second mounting portion 1b.
- the third substrate 13 has a thermal conductivity in the direction in which the side of the second substrate 12 extends, the thermal conductivity in the direction perpendicular to the direction in which the side of the second substrate 12 extends, the third substrate 13 Since the heat transferred to the outer edge is diffused in the direction in which the side of the second substrate 12 extends and in the thickness direction of the third substrate 13 to facilitate heat radiation, the first electronic element 2 is mounted on the first mounting portion 1a.
- the second electronic device 3 is mounted on the second mounting portion 1b and operated, heat can be satisfactorily released to the outside, and the first electronic device 2 and the second mounting device mounted on the first mounting portion 1a can be released.
- the first electronic element 2 and the second electronic element 3 can function well without hindering the operation of the second electronic element 3 mounted on the unit 1b.
- the third substrate 13 may have a frame shape and surrounds the second substrate 12 in a plan view. Alternatively, for example, four rectangular third substrates 13 may be used to form a frame shape by surrounding the second substrate 12 in plan view.
- the electronic element mounting substrate 1 of the third embodiment can be manufactured using the same manufacturing method as the electronic element mounting substrate 1 of the above-described embodiment.
- the electronic device mounting substrate 1 according to the fourth embodiment of the present disclosure is different from the electronic device mounting substrate 1 according to the above-described embodiment in that the second substrate 12 and the third substrate 13 are alternately positioned in the plane direction. That is the point. Inside the first substrate 11, two second substrates 12 and third substrates 13 each having two columns and two rows, that is, four in total, are located.
- the second substrate 12 and the third substrate 13 are alternately positioned in the plane direction, when the electronic device 2 is mounted on the mounting portion 1a and operated, the heat of the electronic device 2 is transferred to the second substrate 12.
- the direction in which the thermal conductivity is large the direction of ⁇ x1
- the direction in which the thermal conductivity of the third substrate 13 is large the direction of ⁇ y2
- heat can be distributed and transmitted in different directions in plan view.
- the electronic element mounting substrate 1 is excellent in reliability and excellent in reliability.
- the mounting portion 1a is located so as to straddle the boundary between the second substrate 12 and the third substrate 13, when the electronic device 2 is mounted on the mounting portion 1a and operated,
- the heat of the electronic element 2 is effectively applied to directions in which the thermal conductivity of the second substrate 12 is large (the direction of ⁇ x1) and the thermal conductivity of the third substrate 13 (the direction of ⁇ y2), which are different in plan view.
- the electronic element mounting substrate 1 is excellent in heat conduction and excellent in reliability.
- the electronic element mounting substrate 1 of the fourth embodiment can be manufactured using the same manufacturing method as the electronic element mounting substrate 1 of the above-described embodiment.
- the electronic element mounting substrate 1 according to the fifth embodiment of the present disclosure is different from the electronic element mounting substrate 1 according to the above-described embodiment in that the electronic element mounting substrate 1 is provided on the first main surface of the first substrate 11.
- a fourth substrate 15 having a seventh main surface (the lower surface in FIGS. 18 to 22) facing the second substrate and an eighth main surface (the upper surface in FIGS. 18 to 22) located on the opposite side to the seventh main surface;
- a ninth main surface (upper surface in FIGS. 18 to 22) provided on the second main surface of the substrate 11 and facing the second main surface and a tenth main surface (FIG. 18 to FIG. 18) located on the opposite side to the ninth main surface. 22 in FIG. 22).
- the first substrate 11, the fourth substrate 15, and the fifth substrate 16 are the invisible outer surface of the first substrate 11, the outer surface of the fourth substrate 15, the outer surface of the fifth substrate 16,
- the inner surface of the through hole 11a of the first substrate 11 is indicated by a dotted line.
- the second substrate 12 and the third substrate 13 are shaded in the example shown in FIG.
- the fourth substrate 15 and the fifth substrate 16 for example, ceramics such as an aluminum oxide sintered body (alumina ceramics), an aluminum nitride sintered body, a mullite sintered body, or a glass ceramic sintered body can be used. .
- the fourth substrate 15 and the fifth substrate 16 can be manufactured by the same material and method as the first substrate 11 made of the above-mentioned ceramics.
- the fourth substrate 15 and the fifth substrate 16 are preferably made of an aluminum nitride sintered body having excellent thermal conductivity.
- the fourth substrate 15 and the fifth substrate 16 may be made of an aluminum nitride sintered body.
- the eighth main surface of the fourth substrate 15, the first main surface of the first substrate 11, the third main surface of the second substrate 12, and the fifth main surface of the third substrate 13 are made of, for example, TiCuAg alloy, TiSnAgCu, or the like. Are bonded by a bonding material made of an active brazing material.
- the ninth main surface of the fifth substrate 16, the second main surface of the first substrate 11, the fourth main surface of the second substrate 12, and the sixth main surface of the third substrate 13 are made of, for example, TiCuAg alloy, TiSnAgCu, or the like. Are bonded by a bonding material made of an active brazing material.
- the bonding material may be provided between the fourth substrate 15 and the first substrate 11, the second substrate 12, and the third substrate 13, or between the fifth substrate 16 and the first substrate 11, the second substrate 12, and the third substrate 13. Is formed to a thickness of about several tens of ⁇ m.
- the thermal conductivity ⁇ 2 of the fourth substrate 15 is substantially constant in the x direction and the y direction in the plane direction, and the z direction in the thickness direction of the fourth substrate 15 is equivalent to the x direction and the y direction in the plane direction ( ⁇ x2 ⁇ ⁇ y2 ⁇ ⁇ z2).
- a substrate having a thermal conductivity ⁇ 2 of about 100 to 200 W / m ⁇ K is used as the fourth substrate 15.
- the thermal conductivity ⁇ 3 of the fifth substrate 16 is substantially constant in the x direction and the y direction in the plane direction, and the z direction in the thickness direction of the fifth substrate 16 is equivalent to the x direction and the y direction in the plane direction ( ⁇ x3 ⁇ ⁇ y3 ⁇ ⁇ z3).
- a substrate having a thermal conductivity ⁇ 3 of about 100 to 200 W / m ⁇ K is used as the fifth substrate 16.
- the drawings of the present embodiment include those in which any of the thermal conductivity ⁇ x2, ⁇ y2, ⁇ z2, ⁇ x3, ⁇ y3, and ⁇ z3 is omitted for convenience.
- the first substrate 11 is made of a metal material such as copper (Cu), copper-tungsten (Cu-W), copper-molybdenum (Cu-Mo), or the like. Can also be used.
- a substrate having a thermal conductivity ⁇ of about 400 W / m ⁇ K is used as the first substrate 11.
- the substrate thickness T4 of the fourth substrate 15 is, for example, about 50 ⁇ m to 500 ⁇ m.
- the thickness T5 of the fifth substrate 16 is, for example, about 50 ⁇ m to 500 ⁇ m, similarly to the substrate thickness T1 of the first substrate 11.
- the thickness T4 of the fourth substrate 15 and the thickness T5 of the fifth substrate 16 are provided to be equal to each other within a range of about 10% (0.90T5 ⁇ T4 ⁇ 1.10T5), the electronic element can be more effectively formed.
- the thickness of the fourth substrate 15 is 100 ⁇ m
- the thickness of the fifth substrate 16 is preferably 100 ⁇ m (90 ⁇ m to 110 ⁇ m).
- the first substrate 11 has a rectangular frame shape in plan view, and has a through hole 11a for embedding the second substrate 12 and the third substrate 13.
- the second substrate 12 has a square shape in plan view.
- the third substrate 13 has a square shape in plan view.
- the fourth substrate 15 has a square shape in plan view.
- the fifth substrate 16 has a square shape in plan view.
- the fifth substrate 16 may have a frame shape.
- the thickness T4 of the fourth substrate 15 is determined by the thickness in the central side and the outer peripheral side of the electronic element mounting substrate 1, that is, the thickness in the area overlapping the second substrate 12 and the thickness in the area overlapping the first substrate 11 in plan view. And may be different.
- the thickness of the fourth substrate 15 in the region overlapping the second substrate 12 is larger than the thickness of the fourth substrate 15 in the region overlapping the first substrate 11, the heat of the electronic element 2 mounted on the fourth substrate 15 is improved. In addition, heat can be easily transferred to the second substrate 12 side.
- the thickness T5 of the fifth substrate 16 is determined by the thickness of the central portion and the outer peripheral side of the electronic element mounting substrate 1, that is, the thickness in the region overlapping the second substrate 12 in plan view and the thickness in the region overlapping the first substrate 11. And may be different.
- the electronic element mounting substrate 1 of the fifth embodiment can be manufactured using the same manufacturing method as the electronic element mounting substrate 1 of the above-described embodiment.
- each of the composite substrates has a square shape having a notch or a chamfer at a corner. It does not matter.
- the electronic element mounting substrate 1 of the present disclosure may be a combination of any one of the electronic element mounting substrate 1 of the first embodiment to the electronic element mounting substrate 1 of the fifth embodiment. Absent.
- the electronic element of the fifth embodiment is used in the electronic element mounting substrate 1 of the second embodiment, the electronic element mounting substrate 1 of the third embodiment, and the electronic element mounting substrate 1 of the fourth embodiment.
- the electronic element of the fifth embodiment is used in the electronic element mounting substrate 1 of the second embodiment, the electronic element mounting substrate 1 of the third embodiment, and the electronic element mounting substrate 1 of the fourth embodiment.
- the electronic element of the fifth embodiment is used.
- the electronic device mounting substrate 1 having the fourth substrate 15 and the fifth substrate 16 may be used.
- the fifth substrate 16 is located between the second substrate 12 and the third substrate 13 on three sides of the third substrate 16. No problem.
- a mounting layer for the electronic element 2 may be provided on the mounting portion 1a.
- the mounting layer can be manufactured using the same material and method as the metal layer 14.
- a metal plating layer whose outermost surface is, for example, an Au plating layer may be provided on the surfaces of the second substrate 12 and the third substrate 13.
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Abstract
Description
本開示の第1の実施形態における電子素子搭載用基板1は、図1~図4に示された例のように、第1基板11と、第2基板12と、第3基板13とを含んでいる。電子装置は、電子素子等用基板1と、電子素子搭載用基板1の搭載部1a(第1搭載部1aともいう)に搭載された電子素子2(第1電子素子2ともいう)と、電子素子搭載用基板1が搭載された配線基板とを含んでいる。電子装置は、例えば電子モジュールを構成するモジュール用基板上の接続パッドに接合材を用いて接続される。
次に、本開示の第2の実施形態による電子装置について、図5~図9および図1~図4を参照しつつ説明する。
次に、本開示の第3の実施形態による電子装置について、図10~図12を参照しつつ説明する。
次に、本開示の第4の実施形態による電子装置について、図13~図17を参照しつつ説明する。
次に、本開示の第5の実施形態による電子装置について、図18~図22を参照しつつ説明する。
Claims (13)
- 第1主面および該第1主面と反対側に位置する第2主面を有する第1基板と、
平面視で該第1基板の内側に位置し、炭素材料からなり、厚み方向における前記第1主面側に位置した第3主面および該第3主面と反対側に位置する第4主面を有する第2基板と、
平面視で前記第1基板と前記第2基板との間に位置し、炭素材料からなり、厚み方向における前記第1主面側に位置した第5主面および該第5主面と反対側に位置する第6主面を有する第3基板と、
厚み方向における前記第1主面側に位置する、第1電子素子を搭載する第1搭載部とを有しており、
前記第2基板および前記第3基板は、それぞれにおいて熱伝導が小さい方向と熱伝導が大きい方向を有しており、
前記第2基板と前記第3基板とは、それぞれにおける熱伝導の小さい方向が互いに垂直に交わり、それぞれにおける熱伝導の大きい方向が互いに垂直に交わるように位置していることを特徴とする電子素子搭載用基板。 - 前記第3基板は矩形状であり、平面視において、前記第2基板は、前記第3基板の長手方向の熱伝導より前記第3基板の長手方向に垂直に交わる方向の熱伝導が大きく、前記第3基板は、長手方向に垂直に交わる方向の熱伝導より長手方向の熱伝導が大きいことを特徴とする請求項1に記載の電子素子搭載用基板。
- 平面視において、前記第3基板は、前記第2基板を挟むように位置していることを特徴とする請求項2に記載の電子素子搭載用基板。
- 平面視において、前記第3基板は、前記第2基板より前記第3基板の長手方向に突出していることを特徴とする請求項2または請求項3に記載の電子素子搭載用基板。
- 厚み方向における前記第2主面側に位置する、第2電子素子を搭載する第2搭載部を有しており、
平面視において、前記第2基板は、厚み方向の熱伝導より平面方向の熱伝導が大きいことを特徴とする請求項1に記載の電子素子搭載用基板。 - 前記第3基板は、前記第2基板の辺が延びる方向の熱伝導率が、前記第2基板の辺が延びる方向に垂直に交わる方向の熱伝導率より大きいことを特徴とする請求項5に記載の電子素子搭載用基板。
- 前記第2基板と前記第3基板とは、平面方向で互い違いに位置していることを特徴とする請求項1に記載の電子素子搭載用基板。
- 平面視において、第1搭載部は、第2基板および第3基板との境界を跨ぐように位置していることを特徴とする請求項7に記載の電子素子搭載用基板。
- 前記第1主面に設けられ、前記第1主面と対向する第7主面および該第7主面と反対側に位置する第8主面を有する第4基板と、
前記第2主面に設けられ、前記第2主面と対向する第9主面および該第9主面と反対側に位置する第10主面を有する第5基板とを有していることを特徴とする請求項1乃至請求項8のいずれかに記載の電子素子搭載用基板。 - 請求項1乃至請求項9のいずれかに記載の電子素子搭載用基板と、
該電子素子搭載用基板の第1搭載部に搭載された第1電子素子とを有していることを特徴とする電子装置。 - 請求項5または請求項6に記載の電子素子搭載用基板と、
該電子素子搭載用基板の第2搭載部に搭載された第2電子素子とを有していることを特徴とする電子装置。 - 前記電子素子搭載用基板が搭載された配線基板または電子素子収納用パッケージを有していることを特徴とする請求項10または請求項11に記載の電子装置。
- 請求項10乃至請求項12のいずれかに記載の電子装置と、
該電子装置が接続されたモジュール用基板とを有することを特徴とする電子モジュール。
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| JP2020527647A JP7055870B2 (ja) | 2018-06-27 | 2019-06-27 | 電子素子搭載用基板、電子装置および電子モジュール |
| EP19826497.0A EP3817042A4 (en) | 2018-06-27 | 2019-06-27 | MOUNTING SUBSTRATE FOR ELECTRONIC ELEMENT, ELECTRONIC DEVICE AND ELECTRONIC MODULE |
| US17/254,887 US11521912B2 (en) | 2018-06-27 | 2019-06-27 | Electronic element mounting substrate, electronic device, and electronic module |
| CN201980042334.6A CN112313794A (zh) | 2018-06-27 | 2019-06-27 | 电子元件搭载用基板、电子装置以及电子模块 |
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|---|---|---|---|---|
| JP2022014344A (ja) * | 2020-07-06 | 2022-01-19 | Tdk株式会社 | 積層電極、電極付き歪抵抗膜および圧力センサ |
| JP2022110267A (ja) * | 2021-01-18 | 2022-07-29 | セイコーエプソン株式会社 | 熱伝導構造体、及び熱伝導構造体の製造方法 |
| WO2023058201A1 (ja) * | 2021-10-07 | 2023-04-13 | Tdk株式会社 | 積層電極、電極付き歪抵抗膜および圧力センサ |
| JP7629756B2 (ja) | 2021-03-03 | 2025-02-14 | Tdk株式会社 | 積層電極、電極付き歪抵抗膜および圧力センサ |
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| EP3817041B1 (en) * | 2018-06-26 | 2023-08-16 | Kyocera Corporation | Electronic element mounting substrate, electronic device, and electronic module |
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| JP7549984B2 (ja) | 2020-07-06 | 2024-09-12 | Tdk株式会社 | 積層電極、電極付き歪抵抗膜および圧力センサ |
| JP2022110267A (ja) * | 2021-01-18 | 2022-07-29 | セイコーエプソン株式会社 | 熱伝導構造体、及び熱伝導構造体の製造方法 |
| JP7629756B2 (ja) | 2021-03-03 | 2025-02-14 | Tdk株式会社 | 積層電極、電極付き歪抵抗膜および圧力センサ |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20210210408A1 (en) | 2021-07-08 |
| EP3817042A1 (en) | 2021-05-05 |
| EP3817042A4 (en) | 2022-04-13 |
| CN112313794A (zh) | 2021-02-02 |
| JPWO2020004567A1 (ja) | 2021-07-08 |
| US11521912B2 (en) | 2022-12-06 |
| JP7055870B2 (ja) | 2022-04-18 |
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