WO2022259873A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- WO2022259873A1 WO2022259873A1 PCT/JP2022/021486 JP2022021486W WO2022259873A1 WO 2022259873 A1 WO2022259873 A1 WO 2022259873A1 JP 2022021486 W JP2022021486 W JP 2022021486W WO 2022259873 A1 WO2022259873 A1 WO 2022259873A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- metal layer
- semiconductor device
- support
- metal
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 305
- 229910052751 metal Inorganic materials 0.000 claims abstract description 250
- 239000002184 metal Substances 0.000 claims abstract description 250
- 238000009792 diffusion process Methods 0.000 claims abstract description 59
- 239000007790 solid phase Substances 0.000 claims abstract description 59
- 230000017525 heat dissipation Effects 0.000 claims description 30
- 229920005989 resin Polymers 0.000 claims description 20
- 239000011347 resin Substances 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 15
- 229910052709 silver Inorganic materials 0.000 claims description 15
- 239000004332 silver Substances 0.000 claims description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 78
- 239000000203 mixture Substances 0.000 description 20
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 229910000679 solder Inorganic materials 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 230000007774 longterm Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/538—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
- H01L23/5383—Multilayer substrates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/373—Cooling facilitated by selection of materials for the device or materials for thermal expansion adaptation, e.g. carbon
- H01L23/3735—Laminates or multilayers, e.g. direct bond copper ceramic substrates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/02—Containers; Seals
- H01L23/04—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls
- H01L23/053—Containers; Seals characterised by the shape of the container or parts, e.g. caps, walls the container being a hollow construction and having an insulating or insulated base as a mounting for the semiconductor body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/16—Fillings or auxiliary members in containers or encapsulations, e.g. centering rings
- H01L23/18—Fillings characterised by the material, its physical or chemical properties, or its arrangement within the complete device
- H01L23/24—Fillings characterised by the material, its physical or chemical properties, or its arrangement within the complete device solid or gel at the normal operating temperature of the device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
- H01L23/3121—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed a substrate forming part of the encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/28—Structure, shape, material or disposition of the layer connectors prior to the connecting process
- H01L24/29—Structure, shape, material or disposition of the layer connectors prior to the connecting process of an individual layer connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
- H01L24/39—Structure, shape, material or disposition of the strap connectors after the connecting process
- H01L24/41—Structure, shape, material or disposition of the strap connectors after the connecting process of a plurality of strap connectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
- H01L24/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L24/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/07—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L29/00
- H01L25/072—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L29/00 the devices being arranged next to each other
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L2224/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L2224/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
- H01L2224/321—Disposition
- H01L2224/32151—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/32221—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/32225—Disposition the layer connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
- H01L2224/39—Structure, shape, material or disposition of the strap connectors after the connecting process
- H01L2224/40—Structure, shape, material or disposition of the strap connectors after the connecting process of an individual strap connector
- H01L2224/401—Disposition
- H01L2224/40151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/40153—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being arranged next to each other, e.g. on a common substrate
- H01L2224/40155—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being arranged next to each other, e.g. on a common substrate the item being non-metallic, e.g. insulating substrate with or without metallisation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48225—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73201—Location after the connecting process on the same surface
- H01L2224/73221—Strap and wire connectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73263—Layer and strap connectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73265—Layer and wire connectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/538—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
- H01L23/5386—Geometry or layout of the interconnection structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/26—Layer connectors, e.g. plate connectors, solder or adhesive layers; Manufacturing methods related thereto
- H01L24/31—Structure, shape, material or disposition of the layer connectors after the connecting process
- H01L24/32—Structure, shape, material or disposition of the layer connectors after the connecting process of an individual layer connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/34—Strap connectors, e.g. copper straps for grounding power devices; Manufacturing methods related thereto
- H01L24/39—Structure, shape, material or disposition of the strap connectors after the connecting process
- H01L24/40—Structure, shape, material or disposition of the strap connectors after the connecting process of an individual strap connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/42—Wire connectors; Manufacturing methods related thereto
- H01L24/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L24/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/73—Means for bonding being of different types provided for in two or more of groups H01L24/10, H01L24/18, H01L24/26, H01L24/34, H01L24/42, H01L24/50, H01L24/63, H01L24/71
Definitions
- the present disclosure relates to a semiconductor device in which a semiconductor element is bonded to a support layer containing a metal element in its composition.
- Patent Document 1 discloses an example of a semiconductor device (power module) in which a plurality of semiconductor elements are bonded to a conductor layer. A plurality of semiconductor elements are joined to the conductor layer via the solder layer. Thereby, when the semiconductor device is used, heat generated from the plurality of semiconductor elements is conducted to the conductor layer through the solder layer.
- the bonding interfaces (the interface between the conductive layer and the solder layer and the interface between the solder layer and the plurality of semiconductor elements) interposed between the conductor layer and the plurality of semiconductor elements ) is confirmed to decrease in the long term. Therefore, in order to improve the reliability of the semiconductor device, a measure for stabilizing the heat dissipation at the junction interface over a long period of time is desired.
- one object of the present disclosure is to provide a semiconductor device capable of stabilizing the heat dissipation at the bonding interface interposed between the supporting layer and the semiconductor element for a long period of time.
- a semiconductor device provided by the present disclosure includes an insulating layer, a supporting layer disposed on the insulating layer and containing a metal, and a semiconductor element bonded to the supporting layer, the semiconductor element comprising: a device metal layer facing the support layer; a solid-phase diffusion bonding layer interposed between the support layer and the device metal layer; Less than the Vickers hardness of the layer.
- the semiconductor device According to the semiconductor device according to the present disclosure, it is possible to stabilize the heat dissipation at the bonding interface interposed between the support layer and the semiconductor element for a long period of time.
- FIG. 1 is a perspective view of a semiconductor device according to a first embodiment of the present disclosure
- FIG. 2 is a plan view of the semiconductor device shown in FIG. 1.
- FIG. 3 is a plan view of the semiconductor device shown in FIG. 1, seen through the sealing resin.
- 4 is a front view of the semiconductor device shown in FIG. 1.
- FIG. 5 is a right side view of the semiconductor device shown in FIG. 1.
- FIG. 6 is a left side view of the semiconductor device shown in FIG. 1.
- FIG. 7 is a bottom view of the semiconductor device shown in FIG. 1.
- FIG. 8 is a partially enlarged view of FIG. 3.
- FIG. 9 is a partially enlarged view of FIG. 3.
- FIG. 10 is a cross-sectional view taken along line XX of FIG. 3.
- FIG. 10 is a cross-sectional view taken along line XX of FIG. 3.
- FIG. 11 is a cross-sectional view taken along line XI-XI of FIG. 3.
- FIG. 12 is a cross-sectional view along line XII-XII in FIG. 3.
- FIG. 13 is a cross-sectional view along line XIII-XIII in FIG. 14 is a partially enlarged view of FIG. 8.
- FIG. 15 is a cross-sectional view along line XV-XV of FIG. 14.
- FIG. 16 is a partially enlarged view of FIG. 15.
- FIG. 17 is a partially enlarged view of FIG. 8.
- FIG. 18 is a cross-sectional view taken along line XVIII-XVIII in FIG. 17.
- FIG. 19 is a partially enlarged cross-sectional view of a modification of the semiconductor device shown in FIG. 1.
- FIG. 20 is a partially enlarged cross-sectional view of a semiconductor device according to a second embodiment of the present disclosure
- 21 is a partially enlarged view of FIG. 20.
- FIG. 21 is a partially enlarged cross-sectional view of a modification of the semiconductor device shown in FIG. 20.
- FIG. FIG. 23 is a partially enlarged cross-sectional view of a semiconductor device according to a third embodiment of the present disclosure; 24 is a partially enlarged view of FIG. 23.
- FIG. FIG. 25 is a partially enlarged cross-sectional view of a semiconductor device according to a fourth embodiment of the present disclosure; 26 is a partially enlarged view of FIG. 25.
- FIG. 25 is a partially enlarged cross-sectional view of a semiconductor device according to a fourth embodiment of the present disclosure.
- the semiconductor device A10 includes an insulating layer 11, a heat dissipation layer 12, a plurality of support layers 20, a plurality of input terminals 41, an output terminal 42, a plurality of semiconductor elements 31, a plurality of buffer layers 32, and a sealing resin .
- the semiconductor device A10 further includes a plurality of gate wirings 24, a plurality of detection wirings 25, a plurality of gate terminals 43, a plurality of detection terminals 44, and a case 60.
- FIGS. 3, 8 and 9 are transparent through the sealing resin 70 for convenience of understanding.
- the XX line and the XI-XI line are indicated by one-dot chain lines.
- the semiconductor device A10 shown in FIG. 1 is a power module.
- the semiconductor device A10 is used for inverters such as electric appliances and hybrid vehicles.
- the semiconductor device A10 has a substantially rectangular shape when viewed in the thickness direction z.
- a thickness direction z refers to a direction along the thickness of the insulating layer 11 .
- one direction perpendicular to the thickness direction z is called a first direction x.
- a direction orthogonal to both the thickness direction z and the first direction x is called a second direction y.
- the semiconductor device A10 is relatively elongated along the first direction x, but the present disclosure is not limited to this.
- the insulating layer 11 is supported by the heat dissipation layer 12, as shown in FIGS.
- the insulating layer 11 has a main surface 111 and a back surface 112 facing opposite to each other in the thickness direction z.
- the major surface 111 faces the multiple support layers 20 .
- the rear surface 112 faces the heat dissipation layer 12 .
- the insulating layer 11 contains resin.
- the resin is, for example, an epoxy resin.
- the Vickers hardness (HV) of the insulating layer 11 is lower than the Vickers hardness of each of the support layers 20 .
- the thickness t1 of the insulating layer 11 is smaller than the thickness T of each of the multiple support layers 20. As shown in FIGS.
- the heat dissipation layer 12 is located on the side opposite to the plurality of support layers 20 with the insulating layer 11 interposed in the thickness direction z. As shown in FIG. 7, part of the heat dissipation layer 12 is exposed outside the semiconductor device A10.
- the semiconductor device A10 is generally attached to a heat sink. A portion of the heat dissipation layer 12 exposed to the outside of the semiconductor device A10 faces the heat sink.
- the main element of the heat dissipation layer 12 is a flat metal plate.
- the composition of the metal plate contains copper. That is, the metal plate contains copper.
- the surface of the heat dissipation layer 12 may be plated with nickel.
- the thickness t ⁇ b>2 of the heat dissipation layer 12 is equal to or greater than the thickness T of each of the plurality of support layers 20 . Therefore, thickness t2 of heat dissipation layer 12 is greater than thickness t1 of insulating layer 11 .
- the plurality of support layers 20 are arranged on the main surface 111 of the insulating layer 11, as shown in FIG.
- the multiple support layers 20 contain a metal element in their composition.
- the metal element includes copper.
- the thickness T of each of the plurality of support layers 20 shown in FIGS. 15 and 18 is 1 to 60 times the thickness t1 of the insulating layer 11 .
- the multiple support layers 20 include a first support layer 21 , a second support layer 22 and a third support layer 23 .
- the first support layer 21, the second support layer 22 and the third support layer 23 extend in the first direction x.
- the second support layer 22 is located next to the first support layer 21 in the second direction y.
- the third support layer 23 is located on the opposite side of the first support layer 21 with the second support layer 22 interposed therebetween in the second direction y.
- the plurality of gate wirings 24 are arranged on the main surface 111 of the insulating layer 11, as shown in FIG.
- the plurality of gate lines 24 includes first gate lines 241 and second gate lines 242 .
- the first gate line 241 is located on the side opposite to the second support layer 22 with the first support layer 21 interposed therebetween in the second direction y.
- the first gate wiring 241 extends in the first direction x.
- the first gate line 241 includes two regions spaced apart from each other in the second direction y. One ends of the two regions of the first gate wiring 241 located closest to the plurality of input terminals 41 are connected to each other.
- the second gate line 242 is located on the side opposite to the second support layer 22 with the third support layer 23 interposed therebetween in the second direction y.
- the second gate wiring 242 extends in the first direction x.
- the second gate line 242 includes two regions spaced apart from each other in the second direction y. One ends of the two regions of the second gate wiring 242 located closest to
- the plurality of detection wirings 25 are arranged on the main surface 111 of the insulating layer 11, as shown in FIG.
- the multiple detection wires 25 include first detection wires 251 and second detection wires 252 .
- the first detection wiring 251 is positioned next to the first gate wiring 241 in the second direction y.
- the first detection wiring 251 extends in the first direction x.
- the first detection wiring 251 includes two regions spaced apart from each other in the second direction y. One ends of the two regions of the first detection wiring 251 located closest to the output terminal 42 are connected to each other.
- the second detection line 252 is positioned next to the second gate line 242 in the second direction y.
- the second detection wiring 252 extends in the first direction x.
- the second detection wiring 252 includes two regions spaced apart from each other in the second direction y. One ends of the two regions of the second detection wiring 252 located closest to the plurality of input terminals 41 are connected to each other.
- the semiconductor device A10 has a pair of pads 26. As shown in FIG. 8, the semiconductor device A10 has a pair of pads 26. As shown in FIG. The pair of pads 26 are adjacent to each other in the first direction x. A pair of pads 26 are positioned at corners of the insulating layer 11 . A pair of pads 26 are adjacent to the first support layer 21 .
- the plurality of input terminals 41 are part of the external connection terminals provided on the semiconductor device A10, as shown in FIGS.
- a plurality of input terminals 41 are connected to a DC power supply arranged outside the semiconductor device A10.
- a plurality of input terminals 41 are supported by the case 60 .
- the plurality of input terminals 41 are made of metal plates.
- the metal plate contains, for example, copper.
- the thickness of the plurality of input terminals 41 is 1.0 mm.
- the multiple input terminals 41 include a first input terminal 41A and a second input terminal 41B.
- the first input terminal 41A is a positive electrode (P terminal).
- the first input terminal 41A is joined to the first pad portion 211 of the first support layer 21 .
- the first input terminal 41A is electrically connected to the first support layer 21 .
- the second input terminal 41B is a negative electrode (N terminal).
- the second input terminal 41B is joined to the third pad portion 231 of the third support layer 23 .
- the second input terminal 41B is electrically connected to the third support layer 23 .
- the first input terminal 41A and the second input terminal 41B are adjacent to each other in the second direction y.
- each of the first input terminal 41A and the second input terminal 41B has an external connection portion 411, an internal connection portion 412 and an intermediate portion 413.
- the external connection part 411 has a flat plate shape exposed from the semiconductor device A10 and perpendicular to the thickness direction z.
- a DC power supply cable or the like is connected to the external connection portion 411 .
- the external connection portion 411 is supported by the case 60 .
- the external connection portion 411 is provided with a connection hole 411A penetrating in the thickness direction z.
- a fastening member such as a bolt is inserted into the connection hole 411A.
- the surface of the external connection portion 411 may be plated with nickel (Ni).
- the internal connection portion 412 is joined to the first pad portion 211 of the first support layer 21 at the first input terminal 41A, and is joined to the third pad portion 231 of the third support layer 23 at the second input terminal 41B. shape.
- the internal connection portion 412 has three teeth, and these multiple teeth are arranged along the second direction y. A plurality of teeth are bent in the thickness direction z. Therefore, the plurality of teeth are hook-shaped when viewed in the second direction y. All of the teeth are joined to the first pad portion 211 and the third pad portion 231 by ultrasonic vibration.
- the intermediate portion 413 interconnects the external connection portion 411 and the internal connection portion 412 .
- the intermediate portion 413 has an L-shaped cross section with respect to the first direction x.
- Intermediate portion 413 has base portion 413A and standing portion 413B.
- the base 413A extends along the first direction x and the second direction y.
- One end of the base portion 413A in the first direction x is connected to the internal connection portion 412 .
- the standing portion 413B stands up from the base portion 413A in the thickness direction z.
- One end of the upright portion 413B in the thickness direction z is connected to the external connection portion 411 .
- the output terminals 42 are part of the external connection terminals provided on the semiconductor device A10, as shown in FIGS.
- the output terminal 42 is connected to a power supply object (such as a motor) arranged outside the semiconductor device A10.
- the output terminal 42 is supported by the case 60 and positioned on the opposite side of the insulating layer 11 from the plurality of input terminals 41 in the first direction x.
- the output terminal 42 is made of a metal plate.
- the metal plate contains, for example, copper.
- the thickness of the output terminal 42 is 1.0 mm.
- the output terminal 42 is separated into two, a first terminal portion 42A and a second terminal portion 42B.
- the output terminal 42 may be a single member in which the first terminal portion 42A and the second terminal portion 42B are integrated.
- the first terminal portion 42A and the second terminal portion 42B are joined to the second pad portion 221 of the second support layer 22 .
- the output terminal 42 is electrically connected to the second support layer 22 .
- the first terminal portion 42A and the second terminal portion 42B are adjacent to each other in the second direction y.
- each of the first terminal portion 42A and the second terminal portion 42B has an external connection portion 421, an internal connection portion 422 and an intermediate portion 423.
- the external connection part 421 has a flat plate shape exposed from the semiconductor device A10 and orthogonal to the thickness direction z. A cable or the like that conducts to a power supply target is joined to the external connection portion 421 .
- the external connection portion 421 is supported by the case 60 .
- the external connection portion 421 is provided with a connection hole 421A penetrating in the thickness direction z. A fastening member such as a bolt is inserted into the connection hole 421A.
- the surface of the external connection portion 411 may be plated with nickel.
- the internal connection part 422 has a comb-like shape joined to the second pad part 221 of the second support layer 22 .
- the internal connection portion 412 has three teeth, and these multiple teeth are arranged along the second direction y.
- a plurality of teeth are bent in the thickness direction z. Therefore, the plurality of teeth are hook-shaped when viewed in the second direction y. All of the teeth are bonded to the second pad portion 221 by ultrasonic vibration.
- the intermediate portion 423 interconnects the external connection portion 421 and the internal connection portion 422 .
- the intermediate portion 423 has an L-shaped cross section with respect to the first direction x.
- the intermediate portion 423 has a base portion 423A and an upright portion 423B.
- the base 423A extends along the first direction x and the second direction y.
- One end of the base portion 423A in the first direction x is connected to the internal connection portion 422 .
- the standing portion 423B stands up from the base portion 423A in the thickness direction z.
- One end of the upright portion 423B in the thickness direction z is connected to the external connection portion 421 .
- a DC voltage is applied to the first input terminal 41A and the second input terminal 41B of the input terminal 41, and AC voltages of various frequencies are output from the output terminal 42 by driving the plurality of semiconductor elements 31.
- the AC voltage is supplied to a power supply object such as a motor.
- the plurality of gate terminals 43 are part of the external connection terminals provided on the semiconductor device A10, as shown in FIGS.
- the multiple gate terminals 43 are electrically connected to the multiple gate wirings 24 .
- the plurality of gate terminals 43 are connected to a driving circuit (eg, gate driver) of the semiconductor device A10 arranged outside.
- a plurality of gate terminals 43 are supported by the case 60 .
- the plurality of gate terminals 43 are composed of metal rods.
- the metal rod contains, for example, copper.
- the surfaces of the plurality of gate terminals 43 may be plated with tin (Sn) or nickel and tin.
- the plurality of gate terminals 43 has an L-shaped cross section with respect to the first direction x. A part of each of the plurality of gate terminals 43 protrudes from the case 60 toward the main surface 111 of the insulating layer 11 in the thickness direction z.
- the multiple gate terminals 43 include a first gate terminal 43A and a second gate terminal 43B.
- the first gate terminal 43A is close to the first gate wiring 241 in the second direction y, as shown in FIG.
- the second gate terminal 43B is located on the opposite side of the insulating layer 11 from the first gate terminal 43A in the second direction y, as shown in FIG.
- the second gate terminal 43B is close to the second gate wiring 242 .
- the plurality of detection terminals 44 are part of the external connection terminals provided on the semiconductor device A10, as shown in FIGS.
- the multiple detection terminals 44 are electrically connected to the multiple detection wirings 25 .
- a plurality of detection terminals 44 are connected to a control circuit of the semiconductor device A10 arranged outside.
- the multiple detection terminals 44 are supported by the case 60 .
- the plurality of detection terminals 44 are composed of metal rods.
- the metal rod contains, for example, copper. Note that the surfaces of the plurality of detection terminals 44 may be tinned, or nickel-plated and tin-plated.
- the plurality of detection terminals 44 has an L-shaped cross section with respect to the first direction x. A part of each of the plurality of detection terminals 44 protrudes from the case 60 toward the main surface 111 of the insulating layer 11 in the thickness direction z.
- the multiple detection terminals 44 include a first detection terminal 44A and a second detection terminal 44B.
- the first detection terminal 44A is located next to the first gate terminal 43A in the first direction x, as shown in FIG.
- the second detection terminal 44B is located next to the second gate terminal 43B in the first direction x, as shown in FIG.
- the semiconductor device A10 has an input current detection terminal 45.
- FIG. The input current detection terminal 45 is part of the external connection terminals provided on the semiconductor device A10.
- the input current detection terminal 45 is connected to the control circuit of the semiconductor device A10 arranged outside.
- Input current detection terminal 45 is supported by case 60 .
- the input current detection terminal 45 is composed of a metal rod.
- the metal rod contains, for example, copper.
- the surface of the input current detection terminal 45 may be tin-plated, or nickel-plated and tin-plated.
- the shape of the input current detection terminal 45 is the same as that of the plurality of gate terminals 43 shown in FIG.
- a portion of the input current detection terminal 45 protrudes from the case 60 toward the main surface 111 of the insulating layer 11 in the thickness direction z, like the plurality of gate terminals 43 shown in FIG. In the second direction y, the position of the input current detection terminal 45 is the same as the position of the first gate terminal 43A.
- the input current detection terminal 45 is located away from the first gate terminal 43A on the side where the output terminal 42 is located in the first direction x.
- the semiconductor device A10 includes an input current detection wire 54.
- the input current detection wire 54 is joined to the input current detection terminal 45 and the first support layer 21 .
- the input current detection terminal 45 is electrically connected to the first support layer 21 .
- Input current sensing wire 54 is, for example, aluminum (Al).
- the semiconductor device A10 has a pair of thermistor terminals 46.
- a pair of thermistor terminals 46 are part of the external connection terminals provided on the semiconductor device A10.
- a pair of thermistor terminals 46 are connected to a control circuit of the semiconductor device A10 arranged outside.
- a pair of thermistor terminals 46 are supported by a case 60 .
- a pair of thermistor terminals 46 are composed of metal rods.
- the metal rod contains, for example, copper.
- the surfaces of the pair of thermistor terminals 46 may be tin-plated, or nickel-plated and tin-plated.
- the shape of the pair of thermistor terminals 46 is the same as that of the plurality of gate terminals 43 shown in FIG. A part of the pair of thermistor terminals 46 protrudes from the case 60 toward the main surface 111 of the insulating layer 11 in the thickness direction z, like the plurality of gate terminals 43 shown in FIG. In the second direction y, the position of the pair of thermistor terminals 46 is the same as the position of the first gate terminal 43A.
- the pair of thermistor terminals 46 are located away from the first gate terminal 43A in the first direction x on the side where the plurality of input terminals 41 are located.
- a pair of thermistor terminals 46 are adjacent to each other in the first direction x.
- the semiconductor device A10 includes a pair of thermistor wires 55. As shown in FIG. A pair of thermistor wires 55 are individually joined to a pair of thermistor terminals 46 and a pair of pads 26 . As a result, the pair of input current detection terminals 45 are electrically connected to the pair of pads 26 . A pair of thermistor wires 55 are made of aluminum, for example.
- the multiple semiconductor elements 31 are bonded to the first support layer 21 and the second support layer 22 of the multiple support layers 20, as shown in FIG.
- the multiple semiconductor elements 31 include multiple first semiconductor elements 31A and multiple second semiconductor elements 31B.
- the plurality of first semiconductor elements 31A are bonded to the first support layer 21 and arranged along the first direction x.
- the plurality of second semiconductor elements 31B are bonded to the second support layer 22 and arranged along the first direction x.
- the plurality of semiconductor elements 31 are MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) mainly composed of silicon (Si) or silicon carbide (SiC).
- the plurality of semiconductor elements 31 may be switching elements such as IGBTs (Insulated Gate Bipolar Transistors) or diodes.
- IGBTs Insulated Gate Bipolar Transistors
- diodes diodes.
- a plurality of semiconductor elements 31 are n-channel type MOSFETs having a vertical structure. Therefore, in the semiconductor device A10, the first support layer 21 and the second support layer 22 form conductive paths over the plurality of semiconductor elements 31. As shown in FIG.
- the plurality of semiconductor elements 31 have element metal layers 311, first electrodes 312 and second electrodes 313. As shown in FIG.
- the element metal layer 311 faces either the first support layer 21 or the second support layer 22. As shown in FIG.
- the element metal layer 311 is electrically connected to the circuit formed in the semiconductor element 31 . Therefore, the element metal layer 311 corresponds to the electrode of the semiconductor element 31 .
- the element metal layer 311 may not correspond to the electrode of the semiconductor element 31, such as a switching element having a horizontal structure. In this case, the first support layer 21 and the second support layer 22 do not form a conductive path over the plurality of semiconductor elements 31 .
- a current corresponding to the power before being converted by the semiconductor element 31 flows through the element metal layer 311 . That is, the element metal layer 311 corresponds to the drain electrode of the semiconductor element 31 .
- the first electrode 312 is located on the side opposite to the element metal layer 311 in the thickness direction z. A current corresponding to the power converted by the semiconductor element 31 flows through the first electrode 312 . That is, the first electrode 312 corresponds to the source electrode of the semiconductor element 31 .
- the second electrode 313 is positioned on the same side as the first electrode 312 in the thickness direction z.
- a gate voltage for driving the semiconductor element 31 is applied to the second electrode 313 . That is, the second electrode 313 corresponds to the gate electrode of the semiconductor element 31 .
- the area of the second electrode 313 is smaller than the area of the first electrode 312 when viewed in the thickness direction z.
- the buffer layer 32 includes either the first support layer 21 or the second support layer 22 of the plurality of support layers 20 and the element metal layer 311 of one of the plurality of semiconductor elements 31. is interposed between The composition of buffer layer 32 includes aluminum.
- the Vickers hardness of the buffer layer 32 is lower than the Vickers hardness of each of the plurality of support layers 20 .
- the buffer layer 32 overlapping any one of the plurality of semiconductor elements 31 protrudes outward from the semiconductor element 31 when viewed in the thickness direction z.
- the peripheral edge of the buffer layer 32 overlapping any one of the plurality of semiconductor elements 31 is configured to match the peripheral edge of the semiconductor element 31, or to be surrounded by the peripheral edge of the semiconductor element 31. It's okay.
- the element metal layer 311 of each of the plurality of semiconductor elements 31 is bonded to either the first support layer 21 or the second support layer 22 by solid phase diffusion. Bonding by solid phase diffusion is performed under conditions of relatively high temperature and high pressure. 16 is interposed between either the first support layer 21 or the second support layer 22 and the element metal layer 311.
- the solid phase diffusion bonding layer 33 is a concept of a metal bonding layer positioned at the interface between two metal layers that are in contact with each other and are bonded by solid phase diffusion.
- the solid phase diffusion bonding layer 33 does not necessarily exist as a metallic bonding layer with a definite thickness. In the solid-phase diffusion bonding layer 33, impurities and voids mixed in when bonding by solid-phase diffusion may be confirmed as portions remaining along the interface between the two metal layers.
- the element metal layer 311 of each of the plurality of semiconductor elements 31 is bonded to either the first support layer 21 or the second support layer 22 via the buffer layer 32 by solid phase diffusion.
- the element metal layers 311 of the plurality of first semiconductor elements 31A are electrically connected to the first support layer 21 . Therefore, the element metal layers 311 of the plurality of first semiconductor elements 31A are electrically connected to the first input terminals 41A.
- the element metal layers 311 of the plurality of second semiconductor elements 31B are electrically connected to the second support layer 22 . Therefore, the element metal layers 311 of the plurality of second semiconductor elements 31B are electrically connected to the output terminals 42 .
- the solid phase diffusion bonding layer 33 includes a first bonding layer 331 and a second bonding layer 332 that are separated from each other in the thickness direction z.
- the first bonding layer 331 is located between either the first support layer 21 or the second support layer 22 and the buffer layer 32 .
- the first bonding layer 331 is located at the interface between the buffer layer 32 and either the first support layer 21 or the second support layer.
- the second bonding layer 332 is located between the buffer layer 32 and one of the element metal layers 311 of the plurality of semiconductor elements 31 .
- the second bonding layer 332 is located at the interface between the buffer layer 32 and the element metal layer 311. As shown in FIG.
- the buffer layer 32 is formed with a first recess 321 recessed toward either the first support layer 21 or the second support layer 22 .
- the element metal layer 311 of one of the plurality of semiconductor elements 31 overlaps the first recess 321 when viewed in the thickness direction z.
- the first concave portion 321 is in contact with the sealing resin 70 .
- the first concave portion 321 is a trace left when the element metal layer 311 of each of the plurality of semiconductor elements 31 is bonded to either the first support layer 21 or the second support layer 22 by solid phase diffusion.
- the semiconductor device A10 includes a thermistor 39 as shown in FIGS.
- the thermistor 39 is joined to the pair of pads 26 .
- the thermistor 39 is an NTC (Negative Temperature Coefficient) thermistor.
- An NTC thermistor has a characteristic that its resistance gradually decreases with temperature rise.
- the thermistor 39 is used as a temperature detection sensor for the semiconductor device A10.
- the thermistor 39 is electrically connected to a pair of thermistor terminals 46 via a pair of pads 26 and a pair of thermistor wires 55 .
- the semiconductor device A10 includes a plurality of conduction members 51, a plurality of first gate wires 521, and a plurality of first detection wires 531, as shown in FIGS. These are individually bonded to a plurality of semiconductor elements 31 .
- the plurality of conducting members 51 are metal clips.
- the composition of the plurality of conducting members 51 contains copper.
- each of the plurality of conducting members 51 may be composed of a plurality of wires.
- the plurality of first gate wires 521 and the plurality of first detection wires 531 are, for example, aluminum.
- the plurality of conducting members 51 have a first joint portion 511 and a second joint portion 512.
- the first joint portion 511 is joined to one of the plurality of semiconductor elements 31 through the joint layer 59 to the first electrode 312 .
- the bonding layer 59 is solder, for example.
- the second joint portion 512 is joined to either the second support layer 22 or the third support layer 23 of the plurality of support layers 20 via the joint layer 59 .
- the plurality of conducting members 51 includes a plurality of first conducting members 51A and a plurality of second conducting members 51B.
- the plurality of first conduction members 51A are individually bonded to the first electrodes 312 of the plurality of first semiconductor elements 31A and the second support layer 22 .
- the first electrodes 312 of the plurality of first semiconductor elements 31A are electrically connected to the second support layer 22 .
- the first electrodes 312 of the plurality of first semiconductor elements 31A are electrically connected to the output terminals 42 .
- the plurality of second conductive members 51B are individually bonded to the first electrodes 312 of the plurality of second semiconductor elements 31B and the third support layer 23.
- the first electrodes 312 of the plurality of semiconductor elements 31 are electrically connected to the third support layer 23 . Therefore, the first electrodes 312 of the plurality of second semiconductor elements 31B are electrically connected to the second input terminal 41B.
- a plurality of first gate wires 521 and a plurality of first detection wires 531 individually bonded to the plurality of first semiconductor elements 31A will be described with reference to FIG.
- the plurality of first gate wires 521 are individually joined to the second electrodes 313 of the plurality of first semiconductor elements 31A and the first gate wirings 241 .
- the plurality of first detection wires 531 are individually joined to the first electrodes 312 of the plurality of first semiconductor elements 31A and the first detection wiring 251 .
- the plurality of first gate wires 521 and the plurality of first detection wires 531 individually bonded to the plurality of second semiconductor elements 31B will be described with reference to FIG.
- the plurality of first gate wires 521 are individually joined to the second electrodes 313 of the plurality of second semiconductor elements 31B and the second gate wirings 242 .
- the plurality of first detection wires 531 are individually joined to the first electrodes 312 of the plurality of second semiconductor elements 31B and the second detection wirings 252 .
- the semiconductor device A10 includes a pair of second gate wires 522, as shown in FIGS.
- a pair of second gate wires 522 are joined to the plurality of gate terminals 43 and the plurality of gate wirings 24 .
- the plurality of second gate wires 522 are made of aluminum, for example.
- one second gate wire 522 is joined to the first gate terminal 43A and the first gate wiring 241.
- the first gate terminal 43A is electrically connected to the second electrodes 313 of the plurality of first semiconductor elements 31A.
- the other second gate wire 522 is joined to the second gate terminal 43B and the second gate wiring 242 .
- the second gate terminal 43B is electrically connected to the second electrodes 313 of the plurality of second semiconductor elements 31B.
- the semiconductor device A10 includes a pair of second detection wires 532, as shown in FIGS.
- a pair of second detection wires 532 are joined to the plurality of detection terminals 44 and the plurality of detection wirings 25 .
- the multiple second detection wires 532 are, for example, aluminum.
- one second detection wire 532 is joined to the first detection terminal 44A and the first detection wiring 251 .
- the first detection terminals 44A are electrically connected to the first electrodes 312 of the plurality of first semiconductor elements 31A.
- the other second detection wire 532 is joined to the second detection terminal 44B and the second detection wiring 252 .
- the second detection terminals 44B are electrically connected to the first electrodes 312 of the plurality of second semiconductor elements 31B.
- the case 60 supports the heat dissipation layer 12 as shown in FIGS.
- a main surface 111 of the insulating layer 11 faces the case 60 in the thickness direction z.
- Case 60 has electrical insulation.
- the case 60 is made of a material containing resin with excellent heat resistance, such as PPS (polyphenylene sulfide).
- the case 60 has a pair of first side walls 611 , a pair of second side walls 612 , a plurality of mounting portions 62 , an input terminal block 63 and an output terminal block 64 .
- the pair of first side walls 611 are separated from each other in the first direction x.
- the pair of first side walls 611 are arranged along both the second direction y and the thickness direction z, and are in contact with the heat dissipation layer 12 at one end in the thickness direction z.
- the pair of second side walls 612 are separated from each other in the second direction y.
- the pair of second side walls 612 are arranged along both the first direction x and the thickness direction z, and are in contact with the heat dissipation layer 12 at one end in the thickness direction z. Both ends of the pair of second side walls 612 in the first direction x are connected to the pair of first side walls 611 .
- a first gate terminal 43A, a first detection terminal 44A, an input current detection terminal 45 and a pair of thermistor terminals 46 are arranged inside one of the second side walls 612 .
- a second gate terminal 43B and a second detection terminal 44B are arranged inside the other second side wall 612 . As shown in FIGS. 8 and 9, the ends of these terminals that are close to the insulating layer 11 in the thickness direction z are supported by a pair of second sidewalls 612 .
- the plurality of mounting portions 62 are portions provided at the four corners of the case 60 when viewed in the thickness direction z.
- the heat dissipation layer 12 is in contact with the lower surfaces of the plurality of mounting portions 62 .
- Each of the plurality of mounting portions 62 is provided with a mounting hole 621 penetrating in the thickness direction z.
- the input terminal block 63 protrudes outward in the first direction x from one first side wall 611 .
- a plurality of input terminals 41 are supported on the input terminal block 63 .
- the input terminal block 63 has a first terminal block 631 and a second terminal block 632 .
- the first terminal block 631 and the second terminal block 632 are separated from each other in the second direction y.
- the first terminal block 631 supports the first input terminal 41A.
- the external connection portion 411 of the first input terminal 41A is exposed from the first terminal block 631 .
- the second terminal block 632 supports the second input terminal 41B.
- the external connection portion 411 of the second input terminal 41B is exposed from the second terminal block 632 .
- a plurality of grooves 633 extending in the first direction x are formed between the first terminal block 631 and the second terminal block 632 .
- a pair of nuts 634 and a pair of intermediate members 635 are arranged inside the first terminal block 631 and the second terminal block 632 .
- the pair of intermediate members 635 are located on the side where the insulating layer 11 is located with respect to the pair of nuts 634 in the thickness direction z, and are in contact with the pair of nuts 634 .
- One intermediate member 635 supports the external connection portion 411 and the intermediate portion 413 of the first input terminal 41A.
- the other intermediate member 635 supports the external connection portion 411 and the intermediate portion 413 of the second input terminal 41B.
- a portion of each of the pair of intermediate members 635 is exposed from the input terminal block 63 .
- a pair of nuts 634 correspond to a pair of connection holes 411A provided in the first input terminal 41A and the second input terminal 41B. Fastening members such as bolts inserted into the pair of connection holes 411A are fitted to the pair of nuts 634 .
- the output terminal block 64 protrudes outward in the first direction x from the other first side wall 611 .
- the output terminal block 64 supports the output terminal 42 .
- the output terminal block 64 has a first terminal block 641 and a second terminal block 642 .
- the first terminal block 641 and the second terminal block 642 are separated from each other in the second direction y.
- the first terminal block 641 supports the first terminal portion 42A of the output terminal 42 .
- the external connection portion 421 of the first terminal portion 42A is exposed from the first terminal block 641 .
- the second terminal block 642 supports the second terminal portion 42B of the output terminal 42 .
- the external connection portion 421 of the second terminal portion 42B is exposed from the second terminal block 642 .
- a plurality of grooves 643 extending in the first direction x are formed between the first terminal block 641 and the second terminal block 642 .
- a pair of nuts 644 and a pair of intermediate members 645 are arranged inside the first terminal block 641 and the second terminal block 642 .
- the pair of intermediate members 645 are located on the side where the insulating layer 11 is located with respect to the pair of nuts 644 in the thickness direction z, and are in contact with the pair of nuts 644 .
- One intermediate member 645 supports the external connection portion 421 and the intermediate portion 423 of the first terminal portion 42A.
- the other intermediate member 645 supports the external connection portion 421 and the intermediate portion 423 of the second terminal portion 42B.
- a portion of each of the pair of intermediate members 635 is exposed from the output terminal block 64 .
- a pair of nuts 644 correspond to a pair of connection holes 421A provided in the first terminal portion 42A and the second terminal portion 42B. Fastening members such as bolts inserted into the pair of connection holes 421 A are fitted to the pair of nuts 644 .
- the sealing resin 70 covers the plurality of semiconductor elements 31, as shown in FIGS.
- the sealing resin 70 has electrical insulation.
- Sealing resin 70 is, for example, silicone gel.
- the sealing resin 70 may be an epoxy resin.
- FIG. 19 is the same as the position of FIG.
- the insulating layer 11 is formed with a second recess 113 recessed in the same direction as the first recess 321 of the buffer layer 32 .
- the first recess 321 overlaps the second recess 113 when viewed in the thickness direction z.
- the second recess 113 is formed along with the formation of the first recess 321 .
- the second concave portion 113 is in contact with the sealing resin 70 .
- the semiconductor device A10 includes an insulating layer 11, a supporting layer 20 disposed on the insulating layer 11 and containing a metal element in its composition, and a semiconductor element 31 bonded to the supporting layer 20.
- the semiconductor device 31 has a device metal layer 311 facing the support layer 20 .
- a solid phase diffusion bonding layer 33 is interposed between the support layer 20 and the element metal layer 311 .
- the bonding interface located between the support layer 20 and the element metal layer 311 is formed by the solid-phase diffusion bonding layer 33 .
- the Vickers hardness of the insulating layer 11 is lower than the Vickers hardness of the support layer 20 .
- the deformation performance of the insulating layer 11 is greater than the deformation performance of the support layer 20, so the thickness direction acting on the support layer 20 Bending around directions orthogonal to z is reduced.
- the compressive stress uniformly acts on the solid-phase diffusion bonding layer 33, so that the metal bonding in the solid-phase diffusion bonding layer 33 becomes stronger. Therefore, the solid-phase diffusion bonding layer 33 with stable heat dissipation over a long period of time can be obtained. Therefore, according to the semiconductor device A10, it is possible to stabilize the heat dissipation at the bonding interface interposed between the support layer 20 and the semiconductor element 31 for a long period of time.
- the semiconductor device A10 further includes a buffer layer 32 interposed between the support layer 20 and the element metal layer 311 of the semiconductor element 31 .
- the Vickers hardness of the buffer layer 32 is lower than the Vickers hardness of the support layer 20 .
- a first recess 321 recessed toward the support layer 20 is formed in the buffer layer 32 .
- the element metal layer 311 of the semiconductor element 31 overlaps the first concave portion 321 when viewed in the thickness direction z.
- This configuration is a manifestation of the relatively high pressure acting on the solid-phase diffusion bonding layer 33 . As a result, it can be easily confirmed visually that the metal bonding in the solid-phase diffusion bonding layer 33 has become stronger.
- the insulating layer 11 is formed with a second recess 113 that is recessed in the same direction as the first recess 321 of the buffer layer 32 .
- the first recess 321 overlaps the second recess 113 when viewed in the thickness direction z.
- This configuration is a manifestation of the fact that a higher pressure acts on the solid-phase diffusion bonding layer 33 than in the case of the semiconductor device A10.
- the thickness of the insulating layer 11 is preferably equal to or relatively smaller than the thickness of the support layer 20.
- the thickness of the support layer 20 is preferably 1 to 60 times the thickness of the insulating layer 11 .
- the element metal layer 311 of the semiconductor element 31 is electrically connected to the circuit configured in the semiconductor element 31 . Therefore, the element metal layer 311 corresponds to the electrode of the semiconductor element 31 .
- current flows through the solid phase diffusion bonding layer 33 when the semiconductor device A10 is used.
- the metal bond in the solid phase diffusion bonding layer 33 becomes stronger, the long-term fluctuation of the current flowing through the solid phase diffusion bonding layer 33 is suppressed. Therefore, the long-term stability of the current flowing through the junction interface between the supporting layer 20 and the semiconductor element 31 can be achieved.
- the semiconductor device A10 further includes a first input terminal 41A electrically connected to the two first support layers 21 and a second input terminal 41B electrically connected to the plurality of second semiconductor elements 31B.
- the first input terminal 41A and the second input terminal 41B are adjacent to each other. Accordingly, when a voltage is applied to the first input terminal 41A and the second input terminal 41B, mutual inductance is generated between the first input terminal 41A and the second input terminal 41B. Thereby, the parasitic inductance of the semiconductor device A10 can be reduced.
- the semiconductor device A10 further includes a heat dissipation layer 12 located on the side opposite to the support layer 20 with the insulating layer 11 interposed therebetween.
- the thickness of the heat dissipation layer 12 is greater than the thickness of the insulating layer 11 .
- FIG. 20 A semiconductor device A20 according to the second embodiment of the present disclosure will be described based on FIGS. 20 and 21.
- FIG. 20 the same reference numerals are given to the same or similar elements of the semiconductor device A10 described above, and overlapping descriptions are omitted.
- the position in FIG. 20 is the same as the position in FIG. 15 showing the semiconductor device A10.
- the semiconductor device A20 is different from the semiconductor device A10 described above in that it further includes a first metal layer 341, a second metal layer 342, a third metal layer 343 and a fourth metal layer 344.
- 20 and 21 show the configuration between the first support layer 21 of the plurality of support layers 20 and any one of the plurality of first semiconductor elements 31A of the plurality of semiconductor elements 31.
- FIG. the configuration between any one of the second support layer 22 of the plurality of support layers 20 and the plurality of second semiconductor elements 31B of the plurality of semiconductor elements 31 is also the first support layer. 21 and the first semiconductor element 31A. Therefore, in the description of the semiconductor device A20, the configuration between the first support layer 21 and any one of the plurality of first semiconductor elements 31A will be representatively described.
- the first metal layer 341 is interposed between the first support layer 21 and the buffer layer 32.
- the first metal layer 341 is in contact with the buffer layer 32 .
- the composition of first metal layer 341 includes, for example, silver (Ag).
- the second metal layer 342 is interposed between the buffer layer 32 and one of the element metal layers 311 of the plurality of first semiconductor elements 31A.
- the second metal layer 342 is in contact with the buffer layer 32 .
- the composition of the second metal layer 342 contains silver, for example.
- the third metal layer 343 is interposed between the first support layer 21 and the first metal layer 341.
- the third metal layer 343 is in contact with the first support layer 21 .
- the composition of the third metal layer 343 contains silver, for example.
- the third metal layer 343 covers the first support layer 21 when the element metal layers 311 of the plurality of first semiconductor elements 31A are bonded to the first support layer 21 via the buffer layer 32 by solid-phase diffusion.
- the fourth metal layer 344 is interposed between the second metal layer 342 and one of the element metal layers 311 of the plurality of first semiconductor elements 31A.
- the fourth metal layer 344 is in contact with the element metal layer 311 .
- the composition of fourth metal layer 344 includes, for example, silver.
- the first bonding layer 331 of the solid-phase diffusion bonding layer 33 is located at the interface between the first metal layer 341 and the third metal layer 343 .
- the second bonding layer 332 of the solid phase diffusion bonding layer 33 is located at the interface between the second metal layer 342 and the fourth metal layer 344 .
- FIG. 22 The position of FIG. 22 is the same as the position of FIG.
- the semiconductor device A21 has a configuration without the fourth metal layer 344 .
- the second bonding layer 332 of the solid phase diffusion bonding layer 33 is located at the interface between the second metal layer 342 and the element metal layer 311 of one of the plurality of first semiconductor elements 31A.
- the semiconductor device A20 includes an insulating layer 11, a supporting layer 20 disposed on the insulating layer 11 and containing a metal element in its composition, and a semiconductor element 31 bonded to the supporting layer 20.
- the semiconductor device 31 has a device metal layer 311 facing the support layer 20 .
- a solid phase diffusion bonding layer 33 is interposed between the support layer 20 and the element metal layer 311 .
- the Vickers hardness of the insulating layer 11 is lower than the Vickers hardness of the support layer 20 . Therefore, with the semiconductor device A20 as well, it is possible to stabilize the heat dissipation at the bonding interface interposed between the supporting layer 20 and the semiconductor element 31 for a long period of time. Furthermore, since the semiconductor device A20 has the same configuration as the semiconductor device A10, the semiconductor device A20 also exhibits the effects of the configuration.
- the semiconductor device A20 further includes a first metal layer 341, a second metal layer 342 and a third metal layer 343.
- the first metal layer 341 and the second metal layer 342 are in contact with the buffer layer 32 .
- the third metal layer 343 is in contact with the support layer 20 .
- the compositions of the first metal layer 341, the second metal layer 342 and the second metal layer 342 contain silver.
- the first bonding layer 331 of the solid phase diffusion bonding layer 33 is located at the interface between the first metal layer 341 and the third metal layer 343 .
- FIG. 23 is the same as the position in FIG. 15 showing the semiconductor device A10.
- the semiconductor device A30 differs from the above-described semiconductor device A10 in that it does not include the buffer layer 32 .
- 23 and 24 show the configuration between the first support layer 21 of the plurality of support layers 20 and any one of the plurality of first semiconductor elements 31A of the plurality of semiconductor elements 31.
- FIG. the configuration between any one of the second support layer 22 of the plurality of support layers 20 and the plurality of second semiconductor elements 31B of the plurality of semiconductor elements 31 is also the first support layer. 21 and the first semiconductor element 31A. Therefore, also in the description of the semiconductor device A30, the configuration between the first support layer 21 and any one of the plurality of first semiconductor elements 31A will be representatively described.
- the element metal layer 311 of any one of the plurality of first semiconductor elements 31A is in contact with the first support layer 21.
- the composition of element metal layer 311 includes, for example, silver.
- the solid-phase diffusion bonding layer 33 is located at the interface between the first support layer 21 and the element metal layer 311 . In the semiconductor device A30, the solid-phase diffusion bonding layer 33 does not include the first bonding layer 331 and the second bonding layer 332. As shown in FIG.
- the first support layer 21 is formed with a third recess 201 recessed toward the insulating layer 11 .
- the element metal layer 311 of one of the plurality of first semiconductor elements 31A overlaps the third recess 201 when viewed in the thickness direction z.
- the third concave portion 201 is a trace left when the element metal layer 311 of the first semiconductor element 31A is bonded to the first support layer 21 by solid-phase diffusion.
- a third concave portion 201 is also formed in the second support layer 22 as a trace when the element metal layer 311 of any one of the plurality of second semiconductor elements 31B is bonded to the second support layer 22 by solid phase diffusion.
- the insulating layer 11 is formed with a fourth recess 114 recessed in the same direction as the third recess 201 of the first support layer 21 .
- the third recess 201 overlaps the fourth recess 114 when viewed in the thickness direction z.
- the fourth recess 114 is formed along with the formation of the third recess 201 .
- the third recess 201 and the fourth recess 114 may also be formed in the semiconductor device A10.
- the condition in this case is that the peripheral edge of the buffer layer 32 overlapping any one of the plurality of semiconductor elements 31 when viewed in the thickness direction z coincides with the peripheral edge of the semiconductor element 31 or is surrounded by the peripheral edge of the semiconductor element 31 . It is to be
- the sealing resin 70 is in contact with the third recess 201 of the first support layer 21 and the fourth recess 114 of the insulating layer 11 .
- the semiconductor device A30 includes an insulating layer 11, a supporting layer 20 disposed on the insulating layer 11 and containing a metal element in its composition, and a semiconductor element 31 bonded to the supporting layer 20.
- the semiconductor device 31 has a device metal layer 311 facing the support layer 20 .
- a solid phase diffusion bonding layer 33 is interposed between the support layer 20 and the element metal layer 311 .
- the Vickers hardness of the insulating layer 11 is lower than the Vickers hardness of the support layer 20 . Therefore, the semiconductor device A30 also makes it possible to stabilize the heat dissipation at the bonding interface interposed between the support layer 20 and the semiconductor element 31 for a long period of time. Further, since the semiconductor device A30 has the same configuration as the semiconductor device A10, the semiconductor device A30 also exhibits the effects of the configuration.
- the element metal layer 311 of the semiconductor element 31 contains silver. With this configuration, when the element metal layer 311 is bonded to the support layer 20 by solid phase diffusion, the element metal layer 311 functions as a substitute for the buffer layer 32 . This makes the buffer layer 32 unnecessary.
- FIGS. 25 and 26 A semiconductor device A40 according to the fourth embodiment of the present disclosure will be described based on FIGS. 25 and 26.
- FIG. 25 the same reference numerals are given to the same or similar elements of the semiconductor device A10 described above, and overlapping descriptions are omitted.
- the position in FIG. 25 is the same as the position in FIG. 15 showing the semiconductor device A10.
- the semiconductor device A40 differs from the semiconductor device A30 described above in that it further includes a lower metal layer 351 and an upper metal layer 352 .
- 25 and 26 show the configuration between the first support layer 21 of the plurality of support layers 20 and any one of the plurality of first semiconductor elements 31A of the plurality of semiconductor elements 31.
- FIG. the configuration between any one of the second supporting layer 22 of the plurality of supporting layers 20 and the plurality of second semiconductor elements 31B of the plurality of semiconductor elements 31 is also the first supporting layer. 21 and the first semiconductor element 31A. Therefore, also in the description of the semiconductor device A40, the configuration between the first support layer 21 and any one of the plurality of first semiconductor elements 31A will be representatively described.
- the lower metal layer 351 is interposed between the first support layer 21 and one of the element metal layers 311 of the plurality of first semiconductor elements 31A.
- the lower metal layer 351 is in contact with the first support layer 21 .
- the composition of lower metal layer 351 includes, for example, silver.
- the upper metal layer 352 is interposed between the lower metal layer 351 and one of the element metal layers 311 of the plurality of first semiconductor elements 31A.
- the upper metal layer 352 is in contact with the element metal layer 311 .
- the composition of upper metal layer 352 includes, for example, silver.
- the upper metal layer 352 covers any one of the element metal layers 311 .
- solid-phase diffusion bonding layer 33 is located at the interface between lower metal layer 351 and upper metal layer 352 .
- the semiconductor device A40 includes an insulating layer 11, a supporting layer 20 disposed on the insulating layer 11 and containing a metal element in its composition, and a semiconductor element 31 bonded to the supporting layer 20.
- the semiconductor device 31 has a device metal layer 311 facing the support layer 20 .
- a solid phase diffusion bonding layer 33 is interposed between the support layer 20 and the element metal layer 311 .
- the Vickers hardness of the insulating layer 11 is lower than the Vickers hardness of the support layer 20 . Therefore, even with the semiconductor device A40, it is possible to stabilize the heat dissipation at the bonding interface between the supporting layer 20 and the semiconductor element 31 for a long period of time. Further, since the semiconductor device A40 has the same configuration as the semiconductor device A10, the semiconductor device A40 also exhibits the effects of the configuration.
- the semiconductor device A40 further includes a lower metal layer 351 and an upper metal layer 352.
- the lower metal layer 351 is in contact with the support layer 20 .
- the upper metal layer 352 is in contact with the device metal layer 311 of the semiconductor device 31 .
- the composition of lower metal layer 351 and upper metal layer 352 includes silver.
- the solid phase diffusion bonding layer 33 is located at the interface between the lower metal layer 351 and the upper metal layer 352 . Therefore, since the semiconductor device A40 exhibits the same effect as the semiconductor device A20, the metal bonding in the solid-phase diffusion bonding layer 33 can be further strengthened.
- Appendix 1 an insulating layer; a support layer disposed over the insulating layer and containing a metal; a semiconductor element bonded to the support layer; The semiconductor element has an element metal layer facing the support layer, A solid phase diffusion bonding layer is interposed between the support layer and the element metal layer, The semiconductor device, wherein the Vickers hardness of the insulating layer is lower than the Vickers hardness of the support layer.
- Appendix 2. The semiconductor device according to Appendix 1, wherein the insulating layer contains resin.
- Appendix 3. The semiconductor device according to appendix 2, wherein the metal includes copper.
- the solid phase diffusion bonding layer includes a first bonding layer positioned between the support layer and the buffer layer, and a second bonding layer positioned between the buffer layer and the element metal layer, 4.
- the semiconductor device further comprising a fourth metal layer interposed between the second metal layer and the element metal layer;
- the fourth metal layer is in contact with the element metal layer, 8.
- the semiconductor device according to appendix 6 or 7, wherein the second bonding layer is located at an interface between the second metal layer and the fourth metal layer.
- Appendix 9 The buffer layer is formed with a first recess recessed toward the support layer, 9.
- the semiconductor device according to any one of appendices 4 to 8, wherein the element metal layer overlaps the first recess when viewed in the thickness direction of the insulating layer.
- the insulating layer is formed with a second recess that is recessed in the same direction as the first recess,
- Appendix 11. Further comprising a sealing resin covering the semiconductor element, 11.
- Appendix 12. 4.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Dispersion Chemistry (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
Description
付記1.
絶縁層と、
前記絶縁層の上に配置され、かつ金属を含有する支持層と、
前記支持層に接合された半導体素子と、を備え、
前記半導体素子は、前記支持層に対向する素子金属層を有し、
前記支持層と前記素子金属層との間には、固相拡散結合層が介在しており、
前記絶縁層のビッカース硬さは、前記支持層のビッカース硬さよりも小さい、半導体装置。
付記2.
前記絶縁層は、樹脂を含む、付記1に記載の半導体装置。
付記3.
前記金属は、銅を含む、付記2に記載の半導体装置。
付記4.
前記支持層と前記素子金属層との間に介在する緩衝層をさらに備え、
前記固相拡散結合層は、前記支持層と前記緩衝層との間に位置する第1結合層と、前記緩衝層と前記素子金属層との間に位置する第2結合層と、を含み、
前記緩衝層のビッカース硬さは、前記支持層のビッカース硬さよりも小さい、付記1ないし3のいずれかに記載の半導体装置。
付記5.
前記緩衝層は、アルミニウムを含有する、付記4に記載の半導体装置。
付記6.
前記支持層と前記緩衝層との間に介在する第1金属層と、
前記緩衝層と前記素子金属層との間に介在する第2金属層と、
前記支持層と前記第1金属層との間に介在する第3金属層と、をさらに備え、
前記第1金属層および前記第2金属層は、前記緩衝層に接しており、
前記第3金属層は、前記支持層に接しており、
前記第1結合層は、前記第1金属層と前記第3金属層との界面に位置しており、
前記第2結合層は、前記第2金属層と前記素子金属層との間に位置する、付記4または5に記載の半導体装置。
付記7.
前記第1金属層、前記第2金属層および前記第3金属層は、各々、銀を含有する、付記6に記載の半導体装置。
付記8.
前記第2金属層と前記素子金属層との間に介在する第4金属層をさらに備え、
前記第4金属層は、前記素子金属層に接しており、
前記第2結合層は、前記第2金属層と前記第4金属層との界面に位置する、付記6または7に記載の半導体装置。
付記9.
前記緩衝層には、前記支持層に向けて凹む第1凹部が形成されており、
前記絶縁層の厚さ方向に視て、前記素子金属層が前記第1凹部に重なっている、付記4ないし8のいずれかに記載の半導体装置。
付記10.
前記絶縁層には、前記第1凹部と同じ向きに凹む第2凹部が形成されており、
前記厚さ方向に視て、前記第1凹部が前記第2凹部に重なっている、付記9に記載の半導体装置。
付記11.
前記半導体素子を覆う封止樹脂をさらに備え、
前記封止樹脂が前記第1凹部に接している、付記9または10に記載の半導体装置。
付記12.
前記素子金属層は、銀を含有する、付記1ないし3のいずれかに記載の半導体装置。
付記13.
前記支持層と前記素子金属層との間に介在する下部金属層と、
前記下部金属層と前記素子金属層との間に介在する上部金属層と、をさらに備え、
前記下部金属層は、前記支持層に接しており、
前記上部金属層は、前記素子金属層に接しており、
前記固相拡散結合層は、前記下部金属層と前記上部金属層との界面に位置する、付記12に記載の半導体装置。
付記14.
前記絶縁層の厚さは、前記支持層の厚さと等しい又は小さい、付記1ないし13のいずれかに記載の半導体装置。
付記15.
前記支持層の厚さは、前記絶縁層の厚さの1倍以上60倍以下である、付記14に記載の半導体装置。
付記16.
前記絶縁層を間に挟んで前記支持層とは反対側に位置する放熱層をさらに備え、
前記放熱層の厚さは、前記絶縁層の厚さよりも大きい、付記1ないし15のいずれかに記載の半導体装置。
付記17.
前記素子金属層は、前記半導体素子に構成された回路に導通している、付記1ないし16のいずれかに記載の半導体装置。
111:主面 112:裏面 113:第2凹部
114:第4凹部 12:放熱層 20:支持層
201:第3凹部 21:第1支持層 211:第1パッド部
22:第2支持層 221:第2パッド部 23:第3支持層
231:第3パッド部 24:ゲート配線
241:第1ゲート配線 242:第2ゲート配線
25:検出配線 251:第1検出配線
252:第2検出配線 26:パッド 31:半導体素子
31A:第1半導体素子 31B:第2半導体素子
311:素子金属層 312:第1電極 313:第2電極
32:緩衝層 32:第1凹部 33:固相拡散結合層
331:第1結合層 332:第2結合層 341:第1金属層
342:第2金属層 343:第3金属層 344:第4金属層
351:下部金属層 352:上部金属層 39:サーミスタ
41:入力端子 41A:第1入力端子 41B:第2入力端子
411:外部接続部 411A:接続孔 412:内部接続部
413:中間部 413A:基部 413B:起立部
42:出力端子 42A:第1端子部 42B:第2端子部
421:外部接続部 421A:接続孔 422:内部接続部
423:中間部 423A:基部 423B:起立部
43:ゲート端子 43A:第1ゲート端子
43B:第2ゲート端子 44:検出端子 44A:第1検出端子
44B:第2検出端子 45:入力電流検出端子
46:サーミスタ端子 51:導通部材 51A:第1導通部材
51B:第2導通部材 511:第1接合部 512:第2接合部
521:第1ゲートワイヤ 522:第2ゲートワイヤ
531:第1検出ワイヤ 532:第2検出ワイヤ
54:入力電流検出ワイヤ 55:サーミスタワイヤ
59:接合層 60:ケース 611:第1側壁
612:第2側壁 62:取付け台 621:取付け孔
63:入力端子台 631:第1端子台 632:第2端子台
633:溝部 634:ナット 635:中間部材
64:出力端子台 641:第1端子台 642:第2端子台
643:溝部 644:ナット 645:中間部材
70:封止樹脂 T,t1,t2:厚さ
z:厚さ方向 x:第1方向 y:第2方向
Claims (17)
- 絶縁層と、
前記絶縁層の上に配置され、かつ金属を含有する支持層と、
前記支持層に接合された半導体素子と、を備え、
前記半導体素子は、前記支持層に対向する素子金属層を有し、
前記支持層と前記素子金属層との間には、固相拡散結合層が介在しており、
前記絶縁層のビッカース硬さは、前記支持層のビッカース硬さよりも小さい、半導体装置。 - 前記絶縁層は、樹脂を含む、請求項1に記載の半導体装置。
- 前記金属は、銅を含む、請求項2に記載の半導体装置。
- 前記支持層と前記素子金属層との間に介在する緩衝層をさらに備え、
前記固相拡散結合層は、前記支持層と前記緩衝層との間に位置する第1結合層と、前記緩衝層と前記素子金属層との間に位置する第2結合層と、を含み、
前記緩衝層のビッカース硬さは、前記支持層のビッカース硬さよりも小さい、請求項1ないし3のいずれかに記載の半導体装置。 - 前記緩衝層は、アルミニウムを含有する、請求項4に記載の半導体装置。
- 前記支持層と前記緩衝層との間に介在する第1金属層と、
前記緩衝層と前記素子金属層との間に介在する第2金属層と、
前記支持層と前記第1金属層との間に介在する第3金属層と、をさらに備え、
前記第1金属層および前記第2金属層は、前記緩衝層に接しており、
前記第3金属層は、前記支持層に接しており、
前記第1結合層は、前記第1金属層と前記第3金属層との界面に位置しており、
前記第2結合層は、前記第2金属層と前記素子金属層との間に位置する、請求項4または5に記載の半導体装置。 - 前記第1金属層、前記第2金属層および前記第3金属層は、各々、銀を含有する、請求項6に記載の半導体装置。
- 前記第2金属層と前記素子金属層との間に介在する第4金属層をさらに備え、
前記第4金属層は、前記素子金属層に接しており、
前記第2結合層は、前記第2金属層と前記第4金属層との界面に位置する、請求項6または7に記載の半導体装置。 - 前記緩衝層には、前記支持層に向けて凹む第1凹部が形成されており、
前記絶縁層の厚さ方向に視て、前記素子金属層が前記第1凹部に重なっている、請求項4ないし8のいずれかに記載の半導体装置。 - 前記絶縁層には、前記第1凹部と同じ向きに凹む第2凹部が形成されており、
前記厚さ方向に視て、前記第1凹部が前記第2凹部に重なっている、請求項9に記載の半導体装置。 - 前記半導体素子を覆う封止樹脂をさらに備え、
前記封止樹脂が前記第1凹部に接している、請求項9または10に記載の半導体装置。 - 前記素子金属層は、銀を含有する、請求項1ないし3のいずれかに記載の半導体装置。
- 前記支持層と前記素子金属層との間に介在する下部金属層と、
前記下部金属層と前記素子金属層との間に介在する上部金属層と、をさらに備え、
前記下部金属層は、前記支持層に接しており、
前記上部金属層は、前記素子金属層に接しており、
前記固相拡散結合層は、前記下部金属層と前記上部金属層との界面に位置する、請求項12に記載の半導体装置。 - 前記絶縁層の厚さは、前記支持層の厚さと等しい又は小さい、請求項1ないし13のいずれかに記載の半導体装置。
- 前記支持層の厚さは、前記絶縁層の厚さの1倍以上60倍以下である、請求項14に記載の半導体装置。
- 前記絶縁層を間に挟んで前記支持層とは反対側に位置する放熱層をさらに備え、
前記放熱層の厚さは、前記絶縁層の厚さよりも大きい、請求項1ないし15のいずれかに記載の半導体装置。 - 前記素子金属層は、前記支持層と、前記半導体素子に構成された回路と、に導通している、請求項1ないし16のいずれかに記載の半導体装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280040207.4A CN117529808A (zh) | 2021-06-11 | 2022-05-26 | 半导体装置 |
DE112022002552.2T DE112022002552T5 (de) | 2021-06-11 | 2022-05-26 | Halbleitervorrichtung |
JP2023527608A JPWO2022259873A1 (ja) | 2021-06-11 | 2022-05-26 | |
US18/493,325 US20240055355A1 (en) | 2021-06-11 | 2023-10-24 | Semiconductor apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-098152 | 2021-06-11 | ||
JP2021098152 | 2021-06-11 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/493,325 Continuation US20240055355A1 (en) | 2021-06-11 | 2023-10-24 | Semiconductor apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022259873A1 true WO2022259873A1 (ja) | 2022-12-15 |
Family
ID=84425960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/021486 WO2022259873A1 (ja) | 2021-06-11 | 2022-05-26 | 半導体装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240055355A1 (ja) |
JP (1) | JPWO2022259873A1 (ja) |
CN (1) | CN117529808A (ja) |
DE (1) | DE112022002552T5 (ja) |
WO (1) | WO2022259873A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002231883A (ja) * | 2001-01-31 | 2002-08-16 | Hitachi Ltd | パワー半導体モジュールおよびそれを用いた電力変換装置 |
JP2014060341A (ja) * | 2012-09-19 | 2014-04-03 | Toshiba Corp | 半導体装置および半導体装置の製造方法 |
JP2014175492A (ja) * | 2013-03-08 | 2014-09-22 | Mitsubishi Materials Corp | 金属複合体、回路基板、半導体装置、及び金属複合体の製造方法 |
JP2014239084A (ja) * | 2011-09-30 | 2014-12-18 | 三洋電機株式会社 | 回路装置 |
JP2018148168A (ja) * | 2017-03-09 | 2018-09-20 | 日立化成株式会社 | 半導体装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6594000B2 (ja) | 2015-02-26 | 2019-10-23 | ローム株式会社 | 半導体装置 |
-
2022
- 2022-05-26 WO PCT/JP2022/021486 patent/WO2022259873A1/ja active Application Filing
- 2022-05-26 JP JP2023527608A patent/JPWO2022259873A1/ja active Pending
- 2022-05-26 CN CN202280040207.4A patent/CN117529808A/zh active Pending
- 2022-05-26 DE DE112022002552.2T patent/DE112022002552T5/de active Pending
-
2023
- 2023-10-24 US US18/493,325 patent/US20240055355A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002231883A (ja) * | 2001-01-31 | 2002-08-16 | Hitachi Ltd | パワー半導体モジュールおよびそれを用いた電力変換装置 |
JP2014239084A (ja) * | 2011-09-30 | 2014-12-18 | 三洋電機株式会社 | 回路装置 |
JP2014060341A (ja) * | 2012-09-19 | 2014-04-03 | Toshiba Corp | 半導体装置および半導体装置の製造方法 |
JP2014175492A (ja) * | 2013-03-08 | 2014-09-22 | Mitsubishi Materials Corp | 金属複合体、回路基板、半導体装置、及び金属複合体の製造方法 |
JP2018148168A (ja) * | 2017-03-09 | 2018-09-20 | 日立化成株式会社 | 半導体装置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2022259873A1 (ja) | 2022-12-15 |
US20240055355A1 (en) | 2024-02-15 |
CN117529808A (zh) | 2024-02-06 |
DE112022002552T5 (de) | 2024-03-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7615854B2 (en) | Semiconductor package that includes stacked semiconductor die | |
US9129931B2 (en) | Power semiconductor module and power unit device | |
JP7163054B2 (ja) | 半導体装置 | |
US11127662B2 (en) | Semiconductor device | |
WO2018194090A1 (ja) | 半導体装置 | |
US20090225577A1 (en) | Power converter | |
JP7498814B2 (ja) | 半導体モジュール | |
US8018730B2 (en) | Power converter apparatus | |
WO2022259873A1 (ja) | 半導体装置 | |
JP2019140157A (ja) | 半導体装置 | |
WO2023243278A1 (ja) | 半導体装置 | |
WO2020044668A1 (ja) | 半導体装置 | |
WO2023286531A1 (ja) | 半導体装置、および半導体装置の製造方法 | |
US20240203849A1 (en) | Semiconductor device and mounting structure for semiconductor device | |
WO2022255048A1 (ja) | 半導体装置 | |
WO2023047890A1 (ja) | 半導体モジュール | |
WO2023149257A1 (ja) | 半導体装置 | |
WO2023218943A1 (ja) | 半導体装置 | |
WO2024029274A1 (ja) | 半導体装置 | |
WO2023243464A1 (ja) | 半導体装置、半導体モジュール、および半導体モジュールの取付構造 | |
WO2023199808A1 (ja) | 半導体装置 | |
WO2024106219A1 (ja) | 半導体装置 | |
WO2023162722A1 (ja) | 半導体装置および半導体モジュール | |
US20240007014A1 (en) | Power conversion device | |
WO2023112723A1 (ja) | 半導体装置、および半導体装置の実装体 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22820055 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2023527608 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280040207.4 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 112022002552 Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22820055 Country of ref document: EP Kind code of ref document: A1 |