WO2020121680A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- WO2020121680A1 WO2020121680A1 PCT/JP2019/042966 JP2019042966W WO2020121680A1 WO 2020121680 A1 WO2020121680 A1 WO 2020121680A1 JP 2019042966 W JP2019042966 W JP 2019042966W WO 2020121680 A1 WO2020121680 A1 WO 2020121680A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- metal layer
- annular
- semiconductor device
- insulating plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W40/00—Arrangements for thermal protection or thermal control
- H10W40/20—Arrangements for cooling
- H10W40/25—Arrangements for cooling characterised by their materials
- H10W40/255—Arrangements for cooling characterised by their materials having a laminate or multilayered structure, e.g. direct bond copper [DBC] ceramic substrates
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W40/00—Arrangements for thermal protection or thermal control
- H10W40/10—Arrangements for heating
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W42/00—Arrangements for protection of devices
- H10W42/121—Arrangements for protection of devices protecting against mechanical damage
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/611—Insulating or insulated package substrates; Interposers; Redistribution layers for connecting multiple chips together
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W70/00—Package substrates; Interposers; Redistribution layers [RDL]
- H10W70/60—Insulating or insulated package substrates; Interposers; Redistribution layers
- H10W70/62—Insulating or insulated package substrates; Interposers; Redistribution layers characterised by their interconnections
- H10W70/65—Shapes or dispositions of interconnections
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W76/00—Containers; Fillings or auxiliary members therefor; Seals
- H10W76/10—Containers or parts thereof
- H10W76/12—Containers or parts thereof characterised by their shape
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W76/00—Containers; Fillings or auxiliary members therefor; Seals
- H10W76/60—Seals
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/30—Die-attach connectors
- H10W72/351—Materials of die-attach connectors
- H10W72/352—Materials of die-attach connectors comprising metals or metalloids, e.g. solders
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/531—Shapes of wire connectors
- H10W72/533—Cross-sectional shape
- H10W72/534—Cross-sectional shape being rectangular
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/541—Dispositions of bond wires
- H10W72/5445—Dispositions of bond wires being orthogonal to a side surface of the chip, e.g. parallel arrangements
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/541—Dispositions of bond wires
- H10W72/547—Dispositions of multiple bond wires
- H10W72/5475—Dispositions of multiple bond wires multiple bond wires connected to common bond pads at both ends of the wires
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/551—Materials of bond wires
- H10W72/552—Materials of bond wires comprising metals or metalloids, e.g. silver
- H10W72/5522—Materials of bond wires comprising metals or metalloids, e.g. silver comprising gold [Au]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/551—Materials of bond wires
- H10W72/552—Materials of bond wires comprising metals or metalloids, e.g. silver
- H10W72/5524—Materials of bond wires comprising metals or metalloids, e.g. silver comprising aluminium [Al]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/551—Materials of bond wires
- H10W72/552—Materials of bond wires comprising metals or metalloids, e.g. silver
- H10W72/5525—Materials of bond wires comprising metals or metalloids, e.g. silver comprising copper [Cu]
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/851—Dispositions of multiple connectors or interconnections
- H10W72/874—On different surfaces
- H10W72/884—Die-attach connectors and bond wires
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W76/00—Containers; Fillings or auxiliary members therefor; Seals
- H10W76/10—Containers or parts thereof
- H10W76/12—Containers or parts thereof characterised by their shape
- H10W76/15—Containers comprising an insulating or insulated base
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/731—Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors
- H10W90/734—Package configurations characterised by the relative positions of pads or connectors relative to package parts of die-attach connectors between a chip and a stacked insulating package substrate, interposer or RDL
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/753—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between laterally-adjacent chips
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/754—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between a chip and a stacked insulating package substrate, interposer or RDL
Definitions
- the present invention relates to a semiconductor device.
- the semiconductor device has a substrate provided with semiconductor elements such as an IGBT (Insulated Gate Bipolar Transistor), a power MOSFET (Metal Oxide Semiconductor Field Effect Transistor), and a FWD (Free Wheeling Diode), and is used for inverter devices and the like. ..
- This type of semiconductor device is configured by disposing the above semiconductor element on a metal foil formed on the surface of an insulating substrate. The semiconductor element is fixed on the metal foil via a bonding material such as solder.
- an insulating substrate is arranged on the upper surface of a copper base as a heat dissipation plate, and a semiconductor element is arranged on the upper surface of the insulating substrate via solder to join them.
- a semiconductor element is arranged on the upper surface of the insulating substrate via solder to join them.
- high density of device mounting can be considered, but since heat generation density also increases, further improvement of heat dissipation is required.
- it is effective to thin or reduce the heat resistance portion.
- a so-called copper baseless structure in which a copper base as a heat dissipation plate is removed has been put into practical use (for example, see Patent Documents 1 and 2).
- a metal pattern is formed on the upper surface of the substrate (ceramic substrate), and a metal film is formed on the lower surface of the substrate. Further, in Patent Documents 1 and 2, a case covering an insulating substrate and a semiconductor element is directly bonded to the outer periphery of the substrate.
- Patent Documents 1 and 2 it is necessary to move the metal pattern on the substrate to the center side of the substrate in order to secure the adhesion area of the case. As a result, it is assumed that the volume difference between the metal pattern on the upper surface side and the metal film on the lower surface side becomes large. In this case, a difference in deformation amount due to heat change between the upper surface side and the lower surface side of the substrate causes shear stress, which may cause a problem of poor durability.
- the present invention has been made in view of the above points, and an object thereof is to provide a semiconductor device capable of achieving both heat dissipation and durability.
- a semiconductor device includes an insulating circuit board including an insulating plate, a first metal layer formed on an upper surface of the insulating plate, and a second metal layer formed on a lower surface of the insulating plate.
- a semiconductor element disposed on an upper surface of the first metal layer with a bonding material interposed therebetween, and a casing portion surrounding the insulating circuit board and the semiconductor element, wherein the first metal layer is the semiconductor.
- a semiconductor device is an insulating circuit including an insulating plate, a first metal layer formed on an upper surface of the insulating plate, and a second metal layer formed on a lower surface of the insulating plate.
- FIG. 6 is a partially enlarged view of the semiconductor device according to the present embodiment. It is a schematic diagram which shows the variation of the semiconductor manufacturing apparatus which concerns on a modification. It is a schematic diagram which shows the variation of the semiconductor manufacturing apparatus which concerns on a modification.
- FIG. 1 is a schematic plan view showing an example of the semiconductor device according to the present embodiment.
- FIG. 2 is a schematic cross-sectional view of the semiconductor device shown in FIG. 1 arranged on a heat sink.
- FIG. 3 is a diagram of the semiconductor device shown in FIG. 1 with the case removed. Note that the semiconductor device shown below is merely an example, and the invention is not limited to this and can be appropriately changed.
- the semiconductor device 1 is applied to a power conversion device such as a power module. As shown in FIGS. 1 to 3, the semiconductor device 1 is configured by disposing a semiconductor element 3 on the upper surface of an insulating circuit board 2. The semiconductor device 1 may be used by disposing the insulating circuit board 2 on the upper surface of the heat sink 10.
- the heat sink 10 has a rectangular shape in plan view and is made of a metal such as copper. The surface of the heat sink 10 is plated, for example. A thermally conductive compound may be sandwiched between the insulating circuit board 2 and the heat sink 10.
- the plan view means a case where the semiconductor device 1 is viewed from a direction perpendicular to the insulating circuit board 2.
- the insulated circuit board 2 is formed by laminating a metal layer and an insulating layer, and is formed in a plan view rectangular shape slightly smaller than the upper surface of the heat sink 10.
- the insulating circuit board 2 includes an insulating plate 20 having an upper surface (one surface) and a lower surface (the other surface) opposite to the upper surface, a first metal layer 21 formed on the upper surface of the insulating plate 20, The second metal layer 22 (see FIGS. 2 and 3) formed on the lower surface of the insulating plate 20.
- the insulating plate 20, the first metal layer 21, and the second metal layer 22 may have the same thickness or different thicknesses.
- the insulating plate 20 is made of an insulating material such as ceramic, and the first metal layer 21 and the second metal layer 22 are made of, for example, copper foil.
- the first metal layer 21 has a plurality of metal patterns. Specifically, the first metal layer 21 is a circuit layer electrically connected to the semiconductor element 3, and the first circuit layer 23, the second circuit layer 24, and the third circuit layer 25, and the periphery of these circuit layers. And an annular layer 26 formed on the.
- the first circuit layer 23 has a rectangular shape in plan view, and two first circuit layers 23 are arranged side by side in the lateral direction at the center of the insulating plate 20.
- the second circuit layer 24 has a long shape in plan view extending laterally of the first circuit layer 23 in the lateral direction. Two second circuit layers 24 are arranged so as to sandwich the two first circuit layers 23 in the longitudinal direction.
- the third circuit layer 25 has an elongated shape in plan view extending laterally of the first circuit layer 23 in the longitudinal direction. Two third circuit layers 25 are arranged so as to sandwich the two first circuit layers 23 in the lateral direction. These circuit layers are arranged with a slight gap therebetween.
- the annular layer 26 has a flat surface, is formed in a square annular shape in a plan view so as to surround each of the above-mentioned circuit layers with a gap provided therebetween.
- the outer edge of the annular layer 26 is located slightly inside the outer edge of the insulating plate 20.
- the annular layer 26 does not function as a circuit pattern, and has a plurality of dimples 29 (see FIG. 4) formed on the upper surface.
- the annular layer 26 may be insulated from the first circuit layer 23, the second circuit layer 24, and the third circuit layer 25 in the first metal layer 21.
- the annular layer 26 may also be insulated from the second metal layer 22. Further, as will be described later in detail, an annular gap G is formed between the annular layer 26 and each circuit layer (circuit layers 23, 24, 25) in a plan view.
- the second metal layer 22 has a flat surface, and has a quadrangular shape in plan view covering substantially the entire lower surface of the insulating plate 20. Specifically, the outer edge portion of the second metal layer 22 is located slightly inside the outer edge portion of the insulating plate 20 and slightly outside the outer edge portion of the annular layer 26. That is, in plan view, the annular layer 26 entirely overlaps the second metal layer 22. Although the details will be described later, a plurality of dimples 28 (see FIG. 4) are formed on the lower surface of the second metal layer 22 at positions facing the annular layer 26.
- the first metal layer 21 forms a predetermined gap between the plurality of circuit layers (first circuit layer 23, second circuit layer 24, and third circuit layer 25) and the annular layer 26.
- the area in plan view is smaller than that of the second metal layer 22. If the thickness of the first metal layer 21 and the thickness of the second metal layer 22 are the same, the volume of the second metal layer 22 is larger than the volume of the first metal layer 21.
- the insulating circuit board 2 thus configured may be, for example, a DCB (Direct Copper Bonding) board or an AMB (Active Metal Brazing) board.
- the insulating plate 20 may be formed using a ceramic material such as alumina (Al 2 O 3 ), aluminum nitride (AlN), and silicon nitride (Si 3 N 4 ).
- the semiconductor element 3 is arranged on the upper surface of the first circuit layer 23 of the insulating circuit board 2.
- the semiconductor element 3 is formed in a rectangular shape in a plan view by using a semiconductor substrate made of, for example, silicon (Si), silicon carbide (SiC), or the like.
- a semiconductor substrate made of, for example, silicon (Si), silicon carbide (SiC), or the like.
- Two semiconductor elements 3 are arranged side by side in the longitudinal direction of the first circuit layer 23 for one first circuit layer 23.
- the semiconductor elements 3 are arranged on the first circuit layer 23 via the bonding material S such as solder. Thereby, the semiconductor element 3 is electrically connected to the first circuit layer 23.
- switching elements such as IGBT (Insulated Gate Bipolar Transistor), power MOSFET (Metal Oxide Semiconductor Field Effect Transistor), and diodes such as FWD (Free Wheeling Diode) are used.
- an RC (Reverse Conducting)-IGBT in which an IGBT and an FWD are integrated, an RB (Reverse Blocking)-IGBT having a sufficient withstand voltage against a reverse bias, or the like may be used.
- the two semiconductor elements 3 are electrically connected by the wiring member W1.
- One semiconductor element 3 is electrically connected to the second circuit layer 24 via the wiring member W2.
- the second circuit layer 24 is electrically connected to an external terminal 27 described later via the wiring member W3.
- the other semiconductor element 3 is electrically connected to the third circuit layer 25 via the wiring member W4.
- the third circuit layer 25 is electrically connected to another external terminal 27 via the wiring member W5.
- a conductor wire is used for each of the above wiring members.
- the material of the conductive wire any one of gold, copper, aluminum, gold alloy, copper alloy, aluminum alloy, or a combination thereof can be used. Further, it is possible to use a member other than the conductive wire as the wiring member. For example, a ribbon can be used as the wiring member.
- the insulated circuit board 2 and the semiconductor element 3 are covered with a case 11 as a casing portion that surrounds the periphery.
- the case 11 is composed of an annular wall portion 12 that surrounds the outer peripheral side of the insulating circuit board 2 and a lid portion 13 that covers the insulating circuit board 2 and the semiconductor element 3 from above, and is formed of, for example, a synthetic resin.
- the annular wall portion 12 is formed in a rectangular annular shape in plan view corresponding to the insulating plate 20 and the annular layer 26, and rises in the thickness direction (vertical direction) of the insulating circuit board 2.
- External terminals 27 are embedded in each side that defines the rectangular ring shape of the annular wall portion 12.
- the external terminal 27 is formed in an L shape in cross section, and one end thereof projects from the inner wall surface of the annular wall portion 12, while the other end projects from the upper surface of the annular wall portion 12.
- One end of the external terminal 27 faces the annular layer 26 above the insulating circuit board 2.
- a square annular step portion 14 that can receive the outer edge portion of the insulating circuit board 2 is formed.
- the step portion 14 is configured by the lower surface portion 15 and the side surface portion 16 to have an L-shaped cross section.
- the annular wall portion 12 is arranged such that the step portion 14 is filled (applied) with the adhesive B, and the outer edge portion of the insulated circuit board 2 is accommodated in the step portion 14.
- the adhesive B is hardened, the annular wall portion 12 is bonded to the insulated circuit board 2. That is, the annular wall portion 12 is fixed to the annular layer 26 via the adhesive B.
- the volume of the metal layer (circuit pattern) formed on the upper surface of the insulating plate may differ from the volume of the metal layer formed on the lower surface of the insulating plate.
- an insulating circuit board is a laminated body of metal and ceramics having different linear expansion coefficients. Therefore, as the volume difference between the metal layer on the upper surface side and the metal layer on the lower surface side of the insulating plate increases, the amount of substrate deformation due to thermal change tends to increase. As a result, a large shear stress is generated in the insulating circuit board, and the durability deteriorates. That is, it can be said that the heat dissipation and the durability of the semiconductor device have a trade-off relationship.
- an annular layer 26 unrelated to the circuit pattern is formed in the outer peripheral region of the insulating circuit board 2 for disposing the case 11, and the annular layer 26 is provided with the case 11 (annular wall portion 12). ) Is arranged.
- the insulating plate 20 by providing the annular layer 26 that is not electrically related to each circuit layer (the first circuit layer 23, the second circuit layer 24, and the third circuit layer 25), the insulating plate 20 It is possible to bring the volume of the first metal layer 21 on the upper surface side closer to the volume of the second metal layer 22 on the lower surface side. That is, the volume difference of the metal layer between the upper surface side and the lower surface side of the insulating plate 20 can be reduced. Therefore, even with a copper baseless structure having improved heat dissipation, it is possible to reduce shear stress due to thermal deformation, and it is possible to achieve both heat dissipation and durability.
- FIG. 4 is a partially enlarged view of the semiconductor device according to the present embodiment. Specifically, FIG. 4A is a partially enlarged view near the annular layer in FIG. 2, and FIG. 4B is a partially enlarged view near the annular layer in FIG.
- a plurality of circuit layers (the first circuit layer 23, the second circuit layer 24, and the third circuit layer 25) are provided on the outer periphery of the circuit layers with a predetermined gap.
- An annular layer 26 is formed so as to surround the periphery of the.
- the second metal layer 22 is formed with a plurality of dimples 28 as first recesses recessed toward the insulating plate 20 at positions facing the annular layer 26.
- the plurality of dimples 28 are arranged immediately below the annular layer 26 and overlap the plane of the annular layer 26 in a plan view. More specifically, as shown in FIG. 4B, the plurality of dimples 28 are arranged so as to form an intermittent double square ring shape at a predetermined pitch. Further, each dimple 28 is formed to a depth reaching the lower surface of the insulating plate 20.
- the annular gap G is provided between the annular layer 26 and the circuit layers 23, 24, 25 in a plan view.
- Dimples 28 are preferably not arranged on the second metal layer 22 facing the annular gap G. That is, it is preferable that the dimples 28 are not arranged in the second metal layer 22 located immediately below the gap G. In this way, by arranging the gap G and the dimples 28 so as not to overlap each other in a plan view, it is possible to suppress a decrease in rigidity of the insulating plate 20 in the vicinity of the gap G. As a result, it is possible to reduce the occurrence of cracks in the insulating plate 20 near the gap G.
- a plurality of dimples 29 are formed as second recesses that are recessed toward the insulating plate 20.
- the plurality of dimples 29 overlap with the plane of the second metal layer 22 in a plan view. Further, each dimple 29 is formed to a depth reaching the upper surface of the insulating plate 20.
- the dimples 28 and the dimples 29 are provided at positions that do not overlap each other in plan view.
- the number of dimples 28 is larger than the number of dimples 29. Further, the dimple 28 is formed larger than the dimple 29.
- the annular wall portion 12 is adhered to the outer edge portion of the insulating circuit board 2 via the adhesive B.
- the outer peripheral edge portion of the insulating circuit board 2 is inserted into the step portion 14 of the annular wall portion 12.
- the step portion 14 has a lower surface portion 15 facing the upper surface of the annular layer 26, and a side surface portion 6 extending downward from the outer peripheral end of the lower surface portion 15.
- the end portion on the inner peripheral side of the lower surface portion 15 is located on the inner side (center side) of the annular layer 26 with respect to the dimple 29.
- the lower end of the side surface part 16 extends below the lower surface of the insulating plate 20 to the middle of the thickness of the second metal layer 22.
- the adhesive B enters between the lower surface portion 15 and the annular layer 26 and between the side surface portion 16 and the insulating plate 20. That is, the adhesive B has entered the bottom of the dimple 29.
- the present embodiment by forming the plurality of dimples 28 on the second metal layer 22, it is possible to bring the volume of the second metal layer 22 close to the volume of the first metal layer 21. That is, the volume difference between the first metal layer 21 and the second metal layer 22 can be reduced. Therefore, the shear stress due to the thermal deformation can be further reduced, and the durability can be improved.
- the surface area of the annular layer 26 can be increased, and the adhesive B also enters the dimples 29, thereby improving the adhesiveness of the annular wall portion 12. It is possible to
- the dimples 28 and the dimples 29 are arranged so as not to overlap each other, it is possible to secure the durability of the insulated circuit board 2 without affecting the rigidity of the insulated circuit board 2.
- two semiconductor elements 3 are arranged for one first circuit layer 23, but the present invention is not limited to this structure.
- the number of semiconductor elements 3 may be one or three or more.
- the semiconductor element 3 is formed in a rectangular shape in plan view, but the configuration is not limited to this.
- the semiconductor element may be formed in a polygonal shape other than the rectangular shape.
- the dimples 28 are formed as the first recess and the dimples 29 are formed as the second recess, but the present invention is not limited to this structure.
- continuous or intermittent grooves may be formed instead of dimples.
- dimples and grooves may be combined.
- the first recess may be a dimple and the second recess may be a groove, or vice versa.
- the number, size and depth of the dimples 28 and 29 can be appropriately changed in consideration of the required heat dissipation and adhesiveness.
- the thickness of each circuit layer and the thickness of the annular layer 26 are the same has been described, but the configuration is not limited.
- the thickness of the annular layer 26 may be larger than that of each circuit layer.
- the volume of the first metal layer 21 can be made closer to the volume of the second metal layer 22, and the durability can be further enhanced.
- first metal layer 21 and the second metal layer 22 have the same thickness and the volume of the second metal layer 22 is larger than the volume of the first metal layer has been described. It is not limited to the configuration.
- the thickness of the second metal layer 22 may be made smaller than that of the first metal layer 21 within the range in which the heat dissipation of the second metal layer 22 can be secured, and the volume relationship may be the same or reversed.
- FIG. 5 is a schematic diagram showing a variation of the semiconductor device according to the modification. Specifically, FIG. 5A is an example in which the dimples 28 are formed only on the second metal layer 22, and FIG. 5B is an example in which the dimples 29 are formed only on the annular layer 26. In any case, it is possible to enjoy the above-mentioned effects. In particular, in FIG. 5B, the depth of the dimple 29 does not reach the upper surface of the insulating plate 20. In this case, the volume of the first metal layer 21 can be made closer to that of the second metal layer 22 while the adhesiveness is improved by the dimples 29, and the durability of the insulated circuit board 2 can be ensured.
- FIG. 6 is a schematic diagram showing a variation of the semiconductor device according to the modification. Specifically, FIG. 6A is a partially enlarged view of the semiconductor device in a sectional view, and FIG. 6B is a partially enlarged view of the semiconductor device in a plan view. Similar to the above embodiment, in the modified example shown in FIGS.
- the annular layer 26, the circuit layers 23, 24, 25, and the insulating plate 20 are provided between the annular layer 26 and the circuit layers 23, 24, 25.
- An annular gap G is provided in a demarcated plan view.
- the dimples 28 are provided in a region of the second metal layer 22 that overlaps with the annular layer 26 and a region of the second metal layer 22 that overlaps with the circuit layers 23, 24, and 25 in plan view. Further, the dimple 28 is not arranged in the second metal layer 22 facing the annular gap G. By arranging such dimples 28, it is possible to further reduce the volume of the second metal layer 22 and bring it closer to the volume of the first metal layer 21. As a result, the volume difference between the first metal layer 21 and the second metal layer 22 can be reduced.
- the present embodiment is not limited to the above-described embodiments and modifications, and may be variously changed, replaced, or modified without departing from the spirit of the technical idea. Further, if the technical idea can be realized in another way by the advancement of the technology or another derivative technology, the method may be implemented using the method. Therefore, the claims cover all embodiments that can be included in the scope of the technical idea.
- the semiconductor device includes an insulating plate, a first metal layer formed on the upper surface of the insulating plate, and a second metal layer formed on the lower surface of the insulating plate.
- a semiconductor element disposed on the upper surface of the first metal layer via a bonding material, and a casing portion surrounding the insulating circuit board and the semiconductor element, wherein the first metal layer is A circuit layer electrically connected to the semiconductor element, and an annular layer formed so as to surround the circuit layer with a gap between the circuit layer and the second metal layer,
- a first recess is formed at a position facing the annular layer toward the insulating plate, and the casing is fixed to the annular layer with an adhesive.
- the annular layer has a flat surface, and the annular layer and the second metal layer at least partially overlap each other in a plan view, and the first recess and the It is characterized in that the planes of the annular layers overlap.
- the annular layer has a second recessed portion that is recessed toward the insulating plate.
- the semiconductor device includes an insulating plate, a first metal layer formed on an upper surface of the insulating plate, and a second metal layer formed on a lower surface of the insulating plate.
- the second metal layer has a flat surface, and the annular layer and the second metal layer at least partially overlap each other in a plan view, and the second recess is formed. And the planes of the second metal layers overlap each other.
- the second metal layer has a first recessed portion that is recessed toward the insulating plate at a position facing the annular layer.
- the volume of the second metal layer is larger than the volume of the first metal layer.
- the first recess and the second recess are provided at positions that do not overlap each other in plan view.
- the first recess and/or the second recess is formed by a plurality of dimples and/or grooves.
- the first recess and the second recess are formed of a plurality of dimples, and the number of the first recesses is larger than the number of the second recesses.
- the thickness of the annular layer is larger than the thickness of the circuit layer.
- the present invention has the effect of achieving both heat dissipation and durability, and is particularly useful for semiconductor devices and semiconductor device manufacturing methods.
Landscapes
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
Abstract
Description
上記実施の形態に記載の半導体装置は、絶縁板と、前記絶縁板の上面に形成される第1金属層と、前記絶縁板の下面に形成される第2金属層と、を有する絶縁回路基板と、前記第1金属層の上面に接合材を介して配置される半導体素子と、前記絶縁回路基板及び前記半導体素子の周囲を囲う筐体部と、を備え、前記第1金属層は、前記半導体素子と電気的に接続される回路層と、前記回路層に対して隙間を空け前記回路層の周囲を囲うように形成される環状層と、を有し、前記第2金属層は、前記環状層に対向する箇所に前記絶縁板に向かって凹む第1凹部を有し、前記筐体部は、前記環状層に接着剤を介して固定されることを特徴とする。
Claims (11)
- 絶縁板と、前記絶縁板の上面に形成される第1金属層と、前記絶縁板の下面に形成される第2金属層と、を有する絶縁回路基板と、
前記第1金属層の上面に接合材を介して配置される半導体素子と、
前記絶縁回路基板及び前記半導体素子の周囲を囲う筐体部と、を備え、
前記第1金属層は、前記半導体素子と電気的に接続される回路層と、前記回路層に対して隙間を空け前記回路層の周囲を囲うように形成される環状層と、を有し、
前記第2金属層は、前記環状層に対向する箇所に前記絶縁板に向かって凹む第1凹部を有し、
前記筐体部は、前記環状層に接着剤を介して固定されることを特徴とする半導体装置。 - 前記環状層は平面を有し、
平面視において、前記環状層及び前記第2金属層は少なくとも一部が重なっており、且つ前記第1凹部及び前記環状層の前記平面が重なっていることを特徴とする請求項1に記載の半導体装置。 - 前記環状層は、前記絶縁板に向かって凹む第2凹部を有することを特徴とする請求項1又は請求項2に記載の半導体装置。
- 絶縁板と、前記絶縁板の上面に形成される第1金属層と、前記絶縁板の下面に形成される第2金属層と、を有する絶縁回路基板と、
前記第1金属層の上面に接合材を介して配置される半導体素子と、
前記絶縁回路基板及び前記半導体素子の周囲を囲う筐体部と、を備え、
前記第1金属層は、前記半導体素子と電気的に接続される回路層と、前記回路層に対して隙間を空け前記回路層の周囲を囲うように形成される環状層と、を有し、
前記環状層は、前記絶縁板に向かって凹む第2凹部を有し、
前記筐体部は、前記環状層に接着剤を介して固定されることを特徴とする半導体装置。 - 前記第2金属層は平面を有し、
平面視において、前記環状層及び前記第2金属層は少なくとも一部が重なっており、且つ前記第2凹部及び前記第2金属層の前記平面が重なっていることを特徴とする請求項4に記載の半導体装置。 - 前記第2金属層は、前記環状層に対向する箇所に前記絶縁板に向かって凹む第1凹部を有することを特徴とする請求項4又は請求項5に記載の半導体装置。
- 前記第2金属層の体積は、前記第1金属層の体積よりも大きいことを特徴とする請求項3又は請求項6に記載の半導体装置。
- 前記第1凹部及び前記第2凹部は、平面視で互いに重ならない位置に設けられることを特徴とする請求項3又は請求項6又は請求項7に記載の半導体装置。
- 前記第1凹部及び/又は前記第2凹部は、複数のディンプル及び/又は溝で形成されることを特徴とする請求項7又は請求項8に記載の半導体装置。
- 前記第1凹部及び前記第2凹部は、複数のディンプルで形成され、
前記第1凹部の個数は、前記第2凹部の個数よりも多いことを特徴とする請求項7から請求項9のいずれかに記載の半導体装置。 - 前記環状層の厚みは、前記回路層の厚みよりも大きいことを特徴する請求項1から請求項10のいずれかに記載の半導体装置。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201980037057.XA CN112236855B (zh) | 2018-12-10 | 2019-11-01 | 半导体装置 |
| JP2020559804A JP7006812B2 (ja) | 2018-12-10 | 2019-11-01 | 半導体装置 |
| DE112019002287.3T DE112019002287T5 (de) | 2018-12-10 | 2019-11-01 | Halbleitervorrichtung |
| US17/107,541 US11348852B2 (en) | 2018-12-10 | 2020-11-30 | Semiconductor device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-230623 | 2018-12-10 | ||
| JP2018230623 | 2018-12-10 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17/107,541 Continuation US11348852B2 (en) | 2018-12-10 | 2020-11-30 | Semiconductor device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020121680A1 true WO2020121680A1 (ja) | 2020-06-18 |
Family
ID=71077227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/042966 Ceased WO2020121680A1 (ja) | 2018-12-10 | 2019-11-01 | 半導体装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11348852B2 (ja) |
| JP (1) | JP7006812B2 (ja) |
| CN (1) | CN112236855B (ja) |
| DE (1) | DE112019002287T5 (ja) |
| WO (1) | WO2020121680A1 (ja) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11978683B2 (en) * | 2018-10-30 | 2024-05-07 | Sumitomo Electric Industries, Ltd. | Semiconductor apparatus |
| KR102122210B1 (ko) * | 2019-10-18 | 2020-06-12 | 제엠제코(주) | 방열 기판, 그 제조 방법, 그리고 이를 포함하는 반도체 패키지 |
| JP7570298B2 (ja) * | 2021-07-26 | 2024-10-21 | 三菱電機株式会社 | 半導体装置 |
| EP4174928A1 (de) | 2021-10-28 | 2023-05-03 | Siemens Aktiengesellschaft | Halbleiterbauelement mit gedämpften bondflächen in einem gehäuse mit umspritzten pins |
| EP4515596A1 (en) * | 2022-06-15 | 2025-03-05 | Huawei Digital Power Technologies Co., Ltd. | Semiconductor package and method for manufacturing a semiconductor package |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08236667A (ja) * | 1995-02-28 | 1996-09-13 | Hitachi Ltd | 半導体装置 |
| JP2003526208A (ja) * | 2000-03-03 | 2003-09-02 | インフィネオン テクノロジーズ アクチェンゲゼルシャフト | 射出成形技術を用いて電子部品をパッケージングするデバイス |
| JP2014096461A (ja) * | 2012-11-08 | 2014-05-22 | Daikin Ind Ltd | パワーモジュール |
| JP2015088653A (ja) * | 2013-10-31 | 2015-05-07 | 三菱電機株式会社 | 半導体装置 |
| JP2015216349A (ja) * | 2014-04-21 | 2015-12-03 | 三菱電機株式会社 | 半導体装置、半導体装置の製造方法 |
| JP2018085490A (ja) * | 2016-11-25 | 2018-05-31 | 太陽誘電株式会社 | 電子部品およびその製造方法 |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09107009A (ja) * | 1995-10-12 | 1997-04-22 | Toshiba Corp | パワーモジュール装置及びその製造方法 |
| JP4710194B2 (ja) | 2001-08-03 | 2011-06-29 | 富士電機システムズ株式会社 | 半導体装置のパッケージ |
| JP2003258150A (ja) | 2002-03-01 | 2003-09-12 | Hitachi Ltd | 絶縁型半導体装置 |
| JP2004103846A (ja) * | 2002-09-10 | 2004-04-02 | Mitsubishi Electric Corp | 電力用半導体装置 |
| KR100705868B1 (ko) * | 2003-05-06 | 2007-04-10 | 후지 덴키 디바이스 테크놀로지 가부시키가이샤 | 반도체 장치 및 그 제조 방법 |
| JP2006019494A (ja) * | 2004-07-01 | 2006-01-19 | Hitachi Metals Ltd | 窒化珪素配線基板および半導体モジュール |
| JP4703377B2 (ja) * | 2005-11-11 | 2011-06-15 | 電気化学工業株式会社 | 段差回路基板、その製造方法およびそれを用いた電力制御部品。 |
| JP2007201346A (ja) * | 2006-01-30 | 2007-08-09 | Mitsuboshi Belting Ltd | セラミックス回路基板及びその製造方法 |
| KR101391924B1 (ko) * | 2007-01-05 | 2014-05-07 | 페어차일드코리아반도체 주식회사 | 반도체 패키지 |
| JP5056325B2 (ja) * | 2007-10-04 | 2012-10-24 | 富士電機株式会社 | 半導体装置の製造方法および半田ペースト塗布用のメタルマスク |
| JP2011253950A (ja) | 2010-06-02 | 2011-12-15 | Mitsubishi Electric Corp | 電力半導体装置 |
| JP2013038259A (ja) * | 2011-08-09 | 2013-02-21 | Mitsubishi Electric Corp | 半導体装置 |
| US8847384B2 (en) * | 2012-10-15 | 2014-09-30 | Toyota Motor Engineering & Manufacturing North America, Inc. | Power modules and power module arrays having a modular design |
| JP2014093365A (ja) * | 2012-11-01 | 2014-05-19 | Toyota Industries Corp | 半導体装置 |
| JP6341822B2 (ja) * | 2014-09-26 | 2018-06-13 | 三菱電機株式会社 | 半導体装置 |
| JP6370257B2 (ja) * | 2015-04-27 | 2018-08-08 | 三菱電機株式会社 | 半導体装置 |
| JP6515694B2 (ja) * | 2015-06-12 | 2019-05-22 | 富士電機株式会社 | 半導体装置 |
| WO2017094189A1 (ja) * | 2015-12-04 | 2017-06-08 | 三菱電機株式会社 | 半導体モジュール |
| JP6607105B2 (ja) * | 2016-03-22 | 2019-11-20 | 三菱マテリアル株式会社 | 回路基板及び半導体モジュール、回路基板の製造方法 |
| JP6421859B2 (ja) | 2017-10-10 | 2018-11-14 | 三菱電機株式会社 | 半導体装置 |
| WO2019167509A1 (ja) | 2018-03-01 | 2019-09-06 | 富士電機株式会社 | 半導体装置 |
-
2019
- 2019-11-01 JP JP2020559804A patent/JP7006812B2/ja active Active
- 2019-11-01 CN CN201980037057.XA patent/CN112236855B/zh active Active
- 2019-11-01 WO PCT/JP2019/042966 patent/WO2020121680A1/ja not_active Ceased
- 2019-11-01 DE DE112019002287.3T patent/DE112019002287T5/de active Pending
-
2020
- 2020-11-30 US US17/107,541 patent/US11348852B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08236667A (ja) * | 1995-02-28 | 1996-09-13 | Hitachi Ltd | 半導体装置 |
| JP2003526208A (ja) * | 2000-03-03 | 2003-09-02 | インフィネオン テクノロジーズ アクチェンゲゼルシャフト | 射出成形技術を用いて電子部品をパッケージングするデバイス |
| JP2014096461A (ja) * | 2012-11-08 | 2014-05-22 | Daikin Ind Ltd | パワーモジュール |
| JP2015088653A (ja) * | 2013-10-31 | 2015-05-07 | 三菱電機株式会社 | 半導体装置 |
| JP2015216349A (ja) * | 2014-04-21 | 2015-12-03 | 三菱電機株式会社 | 半導体装置、半導体装置の製造方法 |
| JP2018085490A (ja) * | 2016-11-25 | 2018-05-31 | 太陽誘電株式会社 | 電子部品およびその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US11348852B2 (en) | 2022-05-31 |
| DE112019002287T5 (de) | 2021-02-04 |
| JPWO2020121680A1 (ja) | 2021-06-03 |
| CN112236855A (zh) | 2021-01-15 |
| US20210082780A1 (en) | 2021-03-18 |
| CN112236855B (zh) | 2025-07-29 |
| JP7006812B2 (ja) | 2022-01-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7006812B2 (ja) | 半導体装置 | |
| US11201121B2 (en) | Semiconductor device | |
| JP7247574B2 (ja) | 半導体装置 | |
| JP6813259B2 (ja) | 半導体装置 | |
| JP7322654B2 (ja) | 半導体モジュール | |
| US20120306086A1 (en) | Semiconductor device and wiring substrate | |
| JP2007173680A (ja) | 半導体装置 | |
| US20130112993A1 (en) | Semiconductor device and wiring substrate | |
| JP2009188376A (ja) | 半導体装置とその製造方法 | |
| CN113228265A (zh) | 半导体组件的电路构造 | |
| CN104160502A (zh) | 半导体模块 | |
| JP7163583B2 (ja) | 半導体装置 | |
| CN111354710A (zh) | 半导体装置及其制造方法 | |
| CN112530915B (zh) | 半导体装置 | |
| JP7306294B2 (ja) | 半導体モジュール | |
| CN113745203A (zh) | 半导体模块 | |
| JP7778271B2 (ja) | 半導体装置及びその製造方法 | |
| JP7512659B2 (ja) | 半導体モジュール及び半導体モジュールの製造方法 | |
| JP7677562B1 (ja) | 半導体装置 | |
| JP2022044158A (ja) | 半導体モジュールの製造方法 | |
| JP7838443B2 (ja) | 半導体装置 | |
| CN110416178A (zh) | 一种集成电路封装结构及其封装方法 | |
| JP2007043098A (ja) | パワー半導体モジュール | |
| WO2024095710A1 (ja) | 半導体モジュール | |
| JP3918748B2 (ja) | 半導体装置 |
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: 19896914 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2020559804 Country of ref document: JP Kind code of ref document: A |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 19896914 Country of ref document: EP Kind code of ref document: A1 |
|
| WWG | Wipo information: grant in national office |
Ref document number: 201980037057.X Country of ref document: CN |