WO2022080134A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- WO2022080134A1 WO2022080134A1 PCT/JP2021/035772 JP2021035772W WO2022080134A1 WO 2022080134 A1 WO2022080134 A1 WO 2022080134A1 JP 2021035772 W JP2021035772 W JP 2021035772W WO 2022080134 A1 WO2022080134 A1 WO 2022080134A1
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- Prior art keywords
- die pad
- semiconductor device
- semiconductor element
- terminals
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Definitions
- This disclosure relates to semiconductor devices.
- the present disclosure relates to a semiconductor device in which a signal is transmitted between a plurality of semiconductor elements via an insulating element.
- Inverter devices are used in electric vehicles, hybrid vehicles, home appliances, etc.
- Such an inverter device includes, for example, a semiconductor device for control / drive and a power semiconductor such as an IGBT (Insulated Gate Bipolar Transistor) or a MOSFET (Metal Oxide Semiconductor Field Effect Transistor).
- the control signal output from the ECU is input to the control element in the semiconductor device.
- the control element converts the control signal into a PWM (Pulse Width Modulation) control signal, and transmits the converted control signal to the drive element in the semiconductor device.
- the drive element switches, for example, six power semiconductors at a desired timing based on the PWM control signal. When the six power semiconductors perform a switching operation at a desired timing, three-phase AC power for driving the motor is generated from the DC power of the vehicle-mounted battery.
- Patent Document 1 discloses an example of a semiconductor device (drive circuit) used in a motor drive device.
- the power supply voltage required for the control element and the power supply voltage required for the drive element may differ. More specifically, there may be a difference between the voltage value applied to the conductive path to the control element and the voltage value applied to the conductive path to the drive element. In such a case, in a configuration in which a plurality of semiconductor elements are mounted in one package, it is required to improve the dielectric strength between these conductive paths.
- one object of the present disclosure is to provide a semiconductor device capable of improving the withstand voltage.
- the semiconductor device provided by the present disclosure includes a first die pad, a second die pad that is separated from the first die pad in the first direction, and has a potential different from that of the first die pad, and the first die pad.
- the device is mounted on the specific die pad and signals are transmitted and received between the first circuit and the second circuit.
- the insulating element that insulates the first circuit and the second circuit from each other, and the first semiconductor element and the second semiconductor element, whichever is mounted on the non-specific die pad is referred to as a specific semiconductor element.
- the first wire bonded to the insulating element and the specific semiconductor element, the first die pad, the second die pad, and the first It includes a semiconductor element, the second semiconductor element, and a sealing resin that covers the insulating element and insulates the first die pad and the second die pad from each other.
- the first wire straddles a pad gap provided between the first die pad and the second die pad in the first direction.
- the first wire includes a first standing portion, a first inclined portion, a first extending portion, a first bent portion, and a second bent portion.
- the first standing portion rises from the insulating element in the thickness direction of the first die pad.
- the first inclined portion extends from the specific semiconductor element toward the insulating element so as to be inclined with respect to the thickness direction.
- the first extending portion is located between the first standing portion and the first inclined portion when viewed along the thickness direction.
- the first bent portion is connected to the first standing portion and the first extending portion, and the second bent portion is connected to the first inclined portion and the first extending portion.
- the inclination angle of the first extending portion with respect to the plane orthogonal to the thickness direction is smaller than the inclination angle of the first inclined portion with respect to the plane.
- the first extending portion straddles the pad gap.
- the boundary between the first extending portion and the first bent portion is farther from the insulating element than the boundary between the first extending portion and the second bent portion. ..
- the boundary between the first inclined portion and the second bent portion is separated from the specific semiconductor element when viewed along the thickness direction.
- the semiconductor device further comprises a second wire.
- the insulating element is located between the first semiconductor element and the second semiconductor element.
- the second wire is joined to the insulating element and the non-specific semiconductor element, and is covered with the sealing resin.
- the second wire has a second standing portion, a second inclined portion, a second extending portion, a third bent portion, and a fourth bent portion.
- the second standing portion rises from the insulating element in the thickness direction.
- the second inclined portion extends from the non-specific semiconductor element toward the insulating element so as to be inclined in the thickness direction.
- the second extending portion is located between the second standing portion and the second inclined portion when viewed along the thickness direction.
- the third bent portion is connected to the second standing portion and the second extended portion, and the fourth bent portion is connected to the second inclined portion and the second extended portion.
- the length of the second extension portion is smaller than the length of the first extension portion.
- the inclination angle of the second extending portion with respect to the plane is smaller than the inclination angle of the second inclined portion with respect to the plane.
- the boundary between the second inclined portion and the fourth bent portion is separated from the semiconductor element mounted on the specific die pad when viewed along the thickness direction.
- the dimension of the first tip of the first inclined portion bonded to the specific semiconductor element in the thickness direction becomes smaller as the distance from the first extending portion increases.
- the dimension in the thickness direction of the second tip of the second inclined portion bonded to the semiconductor element mounted on the specific die pad becomes smaller as the distance from the second extending portion increases. ..
- the power supply voltage supplied to the second circuit is the power supply supplied to the first circuit. Greater than voltage.
- the semiconductor device has a plurality of first terminals, each of which includes a portion located on one side of the first die pad with respect to the first die pad, and each of the first terminals with respect to the second die pad. It further comprises a plurality of second terminals, including a portion located on the other side in one direction.
- the plurality of first terminals are spaced apart from each other in the thickness direction and the second direction orthogonal to the first direction, and at least one of them is conducting to the first circuit.
- the plurality of second terminals are arranged apart from each other in the second direction, and at least one of them is conducting to the second circuit.
- the sealing resin has a pair of first side surfaces separated from each other in the first direction and a pair of second side surfaces separated from each other in the second direction.
- Each of the plurality of first terminals is exposed from one first side surface of the pair of first side surfaces, and each of the plurality of second terminals is exposed from the other first side surface of the pair of first side surfaces. Is exposed.
- the second die pad overlaps the first die pad when viewed along the first direction.
- the first die pad, the second die pad, the plurality of first terminals, and the plurality of second terminals are arranged apart from the pair of second side surfaces.
- each of the plurality of first terminals when viewed along the thickness direction, includes a portion protruding from the first side surface of the one along the first direction.
- each of the plurality of second terminals when viewed along the thickness direction, includes a portion protruding from the other first side surface along the first direction.
- the plurality of first terminals include a pair of first support terminals separated from each other in the second direction.
- the first die pad has a pair of first edge edges separated from each other in the second direction, and the pair of first support terminals are connected to the pair of first edge edges, respectively.
- the plurality of second terminals include a pair of second support terminals separated from each other in the second direction.
- the second die pad has a pair of second edge edges separated from each other in the second direction, and the pair of second support terminals are connected to the pair of second edge edges, respectively.
- the specific die pad is provided with a hole penetrating in the thickness direction. Seen along the thickness direction, the hole is located between the insulating element and the non-specific semiconductor element.
- the insulating element is an inductive type.
- FIG. 2 is a cross-sectional view taken along the line VII-VII of FIG. It is a partially enlarged view of FIG. It is a partially enlarged view of FIG. It is a partially enlarged view of FIG. It is a partially enlarged view of FIG. It is a partially enlarged view of FIG. It is a partially enlarged view of FIG. It is a partially enlarged view of FIG. It is a partially enlarged view of FIG. It is a partially enlarged view of FIG. It is a partially enlarged view of FIG. It is a partially enlarged view of FIG. It is a partially enlarged view of FIG.
- FIG. 21 is a partially enlarged view.
- FIG. 21 is a partially enlarged view.
- the semiconductor device A1 includes a first semiconductor element 11, a second semiconductor element 12, an insulating element 13, a first die pad 21, a second die pad 22, a plurality of first terminals 3, a plurality of second terminals 4, and a plurality of first wires. It includes 51, a plurality of second wires 52, a plurality of third wires 53, a plurality of fourth wires 54, and a sealing resin 6.
- the semiconductor device A1 is surface-mounted on a wiring board of an inverter device of, for example, an electric vehicle (or a hybrid vehicle, etc.).
- the package format of the semiconductor device A1 is SOP (Small Outline Package). However, the package format of the semiconductor device A1 is not limited to SOP.
- the sealing resin 6 is transmitted. In FIG. 2, the transmitted sealing resin 6 is shown by an imaginary line (dashed-dotted line).
- direction x is a direction extending parallel to the normal of the first die pad 21 (or the second die pad 22).
- the direction z is a direction extending through the thickness of the first die pad 21 (or the second die pad 22). Therefore, in the following, the direction z is referred to as "thickness direction z".
- the direction x will be referred to as a “first direction x” and the direction y will be referred to as a “second direction y”, but the present disclosure is not limited thereto.
- the first semiconductor element 11, the second semiconductor element 12, and the insulating element 13 are elements that are the functional centers of the semiconductor device A1. As shown in FIG. 2, in the semiconductor device A1, each of the first semiconductor element 11, the second semiconductor element 12, and the insulating element 13 is composed of individual elements. When viewed along the thickness direction z, each of the first semiconductor element 11, the second semiconductor element 12, and the insulating element 13 has a rectangular shape having a long side extending along the second direction y.
- the first semiconductor element 11 is a circuit for converting a control signal input from an ECU or the like into a PWM control signal, a transmission circuit for transmitting the PWM control signal to the second semiconductor element 12, and a second semiconductor element 12. It has a receiving circuit that receives an electric signal.
- the second semiconductor element 12 has a receiving circuit that receives a PWM control signal, a circuit (gate driver) that performs a switching operation of a switching element (for example, an IGBT, a MOSFET, etc.) based on the PWM control signal, and a first semiconductor element that transmits an electric signal. It has a transmission circuit for transmitting to 11. Examples of the electric signal include an output signal from a temperature sensor arranged near the motor.
- the insulating element 13 is an element for transmitting a PWM control signal and other electric signals in an insulated state.
- the insulating element 13 is an inductive type.
- An insulated transformer is an example of the inductive type insulating element 13.
- the isolated transformer transmits an electric signal in an insulated state by inductively coupling two inductors (coils).
- the insulating element 13 has a substrate made of Si.
- An inductor made of Cu is formed on the substrate.
- the inductor includes a transmit side inductor and a receive side inductor, and these inductors are laminated in the thickness direction z.
- a dielectric layer made of SiO 2 or the like is interposed between the transmitting side inductor and the receiving side inductor.
- the insulating element 13 may be a capacity type.
- An example of the capacity type insulating element 13 is a capacitor.
- the insulating element 13 may be a photocoupler.
- the second semiconductor element 12 requires a power supply voltage higher than the power supply voltage required for the first semiconductor element 11. Therefore, a significant potential difference occurs between the first semiconductor element 11 and the second semiconductor element 12. Therefore, in the semiconductor device A1, the first circuit including the first semiconductor element 11 as a component and the second circuit including the second semiconductor element 12 as a component are insulated from each other by the insulating element 13. In the semiconductor device A1, the first circuit has a relatively low voltage and the second circuit has a relatively high voltage. On top of that, the insulating element 13 relays the transmission and reception of signals between the first circuit and the second circuit.
- the voltage applied to the ground of the first semiconductor element 11 is about 5 V, whereas the voltage applied to the ground of the second semiconductor element 12 is applied. May transiently exceed 600V.
- the insulating element 13 is located between the first semiconductor element 11 and the second semiconductor element 12 in the first direction x.
- the first semiconductor element 11 and the insulating element 13 are mounted on the first die pad 21.
- the second semiconductor element 12 is mounted on the second die pad 22.
- the die pad on which the insulating element 13 is mounted is referred to as a "specific die pad 20".
- a semiconductor element mounted on a die pad different from the specific die pad 20 is referred to as a “specific semiconductor element 10”.
- the first die pad 21 corresponds to the specific die pad 20
- the second semiconductor element 12 corresponds to the specific semiconductor element 10.
- a plurality of electrodes 111 are provided on the upper surface of the first semiconductor element 11 (the surface facing the same direction as the first main surface 211 of the first die pad 21 described later).
- the plurality of electrodes 111 conduct with the circuit configured in the first semiconductor element 11.
- a plurality of electrodes 121 are provided on the upper surface of the second semiconductor element 12 (a surface facing the same direction as the first main surface 211).
- the plurality of electrodes 121 conduct to the circuit configured in the second semiconductor element 12.
- a plurality of first electrodes 131 and a plurality of second electrodes 132 are provided on the upper surface of the insulating element 13 (a surface facing the same direction as the first main surface 211). Each of the plurality of first electrodes 131 and the plurality of second electrodes 132 conducts to either the transmitting side inductor or the receiving side inductor.
- the plurality of first electrodes 131 are arranged along the second direction y.
- the plurality of second electrodes 132 are also arranged along the second direction y.
- the insulating element 13 has a passivation film 133 and a surface protective film 134. Both the passivation film 133 and the surface protective film 134 have electrical insulating properties.
- the passivation film 133 is located at one end in the thickness direction z of the insulating element 13.
- the passivation film 133 is composed of, for example, a silicon dioxide (SiO 2 ) film and a silicon nitride (Si3N 4 ) film formed on the silicon dioxide film.
- the passivation film 133 is in contact with the plurality of first electrodes 131 and the plurality of second electrodes 132.
- the surface protective film 134 is formed on the passivation film 133.
- the surface protective film 134 is made of a material containing, for example, polyimide.
- Each of the plurality of first electrodes 131 and the plurality of second electrodes 132 is exposed from the surface protective film 134.
- the surface protective film 134 includes the first film 134A and the second film 134B.
- the first film 134A is located between the plurality of first electrodes 131 and the plurality of second electrodes 132 in the first direction x.
- the second film 134B is a portion obtained by removing the first film 134A from the surface protective film 134.
- the first film 134A is provided with a plurality of slits penetrating in the thickness direction z and extending along the second direction y.
- the creepage distance (the shortest distance along the surface of each of the passivation film 133 and the first film 134A) from any of the plurality of first electrodes 131 to any of the plurality of second electrodes 132 by the plurality of slits. It can be made longer. This contributes to the improvement of the withstand voltage of the insulating element 13.
- the first die pad 21, the second die pad 22, the plurality of first terminals 3, and the plurality of second terminals 4 are formed by the first semiconductor element 11, the second semiconductor element 12, and the insulating element 13, and the wiring board of the inverter device. It is a conductive member that constitutes a conduction path. These conductive members are made of, for example, an alloy containing Cu in the composition.
- the first die pad 21 is arranged on one side of the first direction x.
- the second die pad 22 is arranged on the other side of the first die pad 21 with respect to the first die pad 21, and is located away from the first die pad 21 in the first direction x. Therefore, a pad gap 23 is provided between the first die pad 21 and the second die pad 22 in the first direction x.
- the pad gap 23 extends along the second direction y when viewed along the thickness direction z.
- the first die pad 21 is equipped with a first semiconductor element 11 and an insulating element 13.
- the first die pad 21 is conductive with the first semiconductor element 11.
- the first die pad 21 is included in the components of the first circuit described above.
- the first die pad 21 has a substantially rectangular shape when viewed along the thickness direction z.
- the thickness of the first die pad 21 (dimension in the thickness direction z) is, for example, 100 ⁇ m or more and 300 ⁇ m or less.
- the first die pad 21 has a first main surface 211 and a first back surface 212.
- the first main surface 211 and the first back surface 212 are located apart from each other in the thickness direction z.
- the first main surface 211 and the first back surface 212 face each other in the thickness direction z.
- Each of the first main surface 211 and the first back surface 212 is flat (or substantially flat).
- the first semiconductor element 11 and the insulating element 13 are bonded to the first main surface 211 by a conductive bonding material (solder, metal paste, sintered metal, etc.) (not shown).
- the second die pad 22 is equipped with the second semiconductor element 12.
- the second die pad 22 is conductive with the second semiconductor element 12.
- the second die pad 22 is included in the components of the second circuit described above. Therefore, the potential of the second die pad 22 is relatively different from that of the first die pad 21.
- the second die pad 22 has a substantially rectangular shape when viewed along the thickness direction z.
- the first die pad 21 and the second die pad 22 are arranged apart from each other in the first direction x.
- the second die pad 22 overlaps the first die pad 21 when viewed along the first direction x.
- the first die pad 21 and the second die pad 22 are galvanically insulated.
- the thickness of the second die pad 22 is, for example, 100 ⁇ m or more and 300 ⁇ m or less.
- the second die pad 22 has a second main surface 221 and a second back surface 222.
- the second main surface 221 and the second back surface 222 are located apart from each other in the thickness direction z.
- the second main surface 221 and the second back surface 222 face opposite to each other in the thickness direction z.
- Each of the second main surface 221 and the second back surface 222 is flat (or substantially flat).
- the thickness of each of the first die pad 21 and the second die pad 22 is 0.2 times or more and 1.2 times or less the length of the pad gap 23.
- the second semiconductor element 12 is joined to the second main surface 221 by a conductive joining material (solder, metal paste, sintered metal, etc.) (not shown).
- the plurality of first terminals 3 include a portion located on one side of the first direction x with respect to the first die pad 21.
- the plurality of first terminals 3 are arranged along the second direction y. At least one of the plurality of first terminals 3 is conducting to the above-mentioned first circuit.
- each of the plurality of first terminals 3 is located on one side of the first direction x of the pair of first side surfaces 63 of the sealing resin 6 described later. It is exposed from 63.
- the plurality of first terminals 3 include a plurality of first intermediate terminals 31, a pair of first side terminals 32, and a pair of first support terminals 33.
- a plurality of first intermediate terminals 31 are arranged so as to be sandwiched between a pair of first side terminals 32 in the second direction y.
- Each of the plurality of first intermediate terminals 31 has a lead portion 311 and a pad portion 312.
- the lead portion 311 is a band extending along the first direction x when viewed along the thickness direction z.
- the lead portion 311 includes a portion protruding from the sealing resin 6 along the first direction x when viewed along the thickness direction z, and a portion covered with the sealing resin 6.
- the portion of the lead portion 311 protruding from the sealing resin 6 is bent in a gull-wing shape.
- the portion of the lead portion 311 exposed from the sealing resin 6 may be plated.
- the plating layer formed by the plating treatment is made of an alloy containing Sn, such as solder, and covers the portion exposed from the sealing resin 6.
- the plating layer improves the adhesion of solder to the exposed portion, and at the same time, the exposed portion caused by the solder bonding. Prevent erosion.
- the pad portion 312 is connected to the lead portion 311 and is covered with the sealing resin 6.
- the dimension of the pad portion 312 in the second direction y is larger than the dimension of the lead portion 311.
- the upper surface of the pad portion 312 (the surface facing the same direction as the first main surface 211 of the first die pad 21) may be plated.
- the plating layer formed by the plating treatment is, for example, a metal layer containing Ag. The plating layer protects the impact on the pad portion 312 due to the joining of the third wire 53 while increasing the bonding strength to the pad portion 312 of any of the plurality of third wires 53 described later.
- the pad portion 312 is flat (or substantially flat).
- the pair of first side terminals 32 are arranged on both sides of the plurality of first intermediate terminals 31 in the second direction y.
- Each of the pair of first side terminals 32 has a lead portion 321 and a pad portion 322.
- the lead portion 321 is a band extending along the first direction x when viewed along the thickness direction z.
- the lead portion 321 includes a portion protruding from the sealing resin 6 along the first direction x and a portion covered with the sealing resin 6 when viewed along the thickness direction z.
- the portion of the lead portion 321 that protrudes from the sealing resin 6 is bent in a gull-wing shape.
- the portion of the lead portion 321 exposed from the sealing resin 6 may be covered with a plating layer (for example, an alloy containing Sn such as solder) as in the lead portion 311.
- a plating layer for example, an alloy containing Sn such as solder
- the pad portion 322 is connected to the lead portion 321 and is covered with the sealing resin 6.
- the dimension of the pad portion 322 in the second direction y is larger than the dimension of the lead portion 321. Even if the upper surface of the pad portion 322 (the surface facing the same direction as the first main surface 211 of the first die pad 21) is covered with a plating layer (for example, metal containing Ag) like the upper surface of the pad portion 312. good.
- the pad portion 322 is flat (or substantially flat).
- the pair of first support terminals 33 are located apart from each other in the second direction y.
- the pair of first support terminals 33 are connected to both ends of the first die pad 21 in the second direction y.
- the first die pad 21 is supported by the pair of first support terminals 33.
- the pair of first support terminals 33 are arranged on both sides of the pair of first side terminals 32 in the second direction y.
- Each of the pair of first support terminals 33 has a lead portion 331 and a pad portion 332.
- the lead portion 331 is a band extending along the first direction x when viewed along the thickness direction z.
- the lead portion 331 includes a portion protruding from the sealing resin 6 along the first direction x and a portion covered with the sealing resin 6 when viewed along the thickness direction z.
- the portion of the lead portion 331 protruding from the sealing resin 6 is bent in a gull-wing shape.
- the portion of the lead portion 331 exposed from the sealing resin 6 may be covered with a plating layer (for example, an alloy containing Sn such as solder) as in the lead portion 311.
- the length of the portion of the lead portion 331 covered with the sealing resin 6 is larger than the length of the portion of the lead portion 311 and the lead portion 321 covered with the sealing resin 6.
- the pad portion 332 is connected to the lead portion 331 and is covered with the sealing resin 6.
- the end of the pad portion 332 is connected to the first die pad 21. Even if the upper surface of the pad portion 332 (the surface facing the same direction as the first main surface 211 of the first die pad 21) is covered with a plating layer (for example, metal containing Ag) like the upper surface of the pad portion 312. good.
- the pad portion 332 is flat (or substantially flat).
- the plurality of second terminals 4 include a portion located on the other side of the first direction x with respect to the second die pad 22.
- the plurality of second terminals 4 are arranged along the second direction y. At least one of the plurality of second terminals 4 is conducting to the above-mentioned second circuit.
- each of the plurality of second terminals 4 is located on the other side of the first direction x of the pair of first side surfaces 63 of the sealing resin 6 described later. It is exposed from 63.
- the plurality of second terminals 4 include a plurality of second intermediate terminals 41, a pair of second side terminals 42, and a pair of second support terminals 43.
- a plurality of second intermediate terminals 41 are arranged so as to be sandwiched between a pair of second support terminals 43 in the second direction y.
- Each of the plurality of second intermediate terminals 41 has a lead portion 411 and a pad portion 412.
- the lead portion 411 has a band shape extending along the first direction x when viewed along the thickness direction z.
- the lead portion 411 includes a portion protruding from the sealing resin 6 along the first direction x and a portion covered with the sealing resin 6 when viewed along the thickness direction z.
- the portion of the lead portion 411 protruding from the sealing resin 6 is bent in a gull-wing shape.
- the portion of the lead portion 411 exposed from the sealing resin 6 may be covered with a plating layer (for example, an alloy containing Sn such as solder) as in the lead portion 311.
- a plating layer for example, an alloy containing Sn such as solder
- the pad portion 412 is connected to the lead portion 411 and is covered with the sealing resin 6.
- the dimension of the pad portion 412 in the second direction y is larger than the dimension of the lead portion 411.
- the upper surface of the pad portion 412 (the surface facing the same direction as the first main surface 211 of the first die pad 21) may be plated.
- the plating layer formed by the plating treatment is, for example, a metal layer containing Ag. The plating layer protects the impact on the pad portion 412 due to the joining of the fourth wire 54 while increasing the bonding strength to the pad portion 412 of any of the plurality of fourth wires 54 described later.
- the pad portion 412 is flat (or substantially flat).
- the pair of second side terminals 42 are arranged on both sides of the plurality of second intermediate terminals 41 in the second direction y.
- Each of the pair of second side terminals 42 has a lead portion 421 and a pad portion 422.
- the lead portion 421 is a band extending along the first direction x when viewed along the thickness direction z.
- the lead portion 421 includes a portion protruding from the sealing resin 6 along the first direction x and a portion covered with the sealing resin 6 when viewed along the thickness direction z.
- the portion of the lead portion 421 that protrudes from the sealing resin 6 is bent in a gull-wing shape.
- the portion of the lead portion 421 exposed from the sealing resin 6 may be covered with a plating layer (for example, an alloy containing Sn such as solder) as in the lead portion 311.
- the length of the portion of the lead portion 421 covered with the sealing resin 6 is larger than the length of the portion of the lead portion 411 covered with the sealing resin 6.
- the pad portion 422 is connected to the lead portion 421 and is covered with the sealing resin 6.
- the dimension of the pad portion 422 in the second direction y is larger than the dimension of the lead portion 421. Even if the upper surface of the pad portion 422 (the surface facing the same direction as the first main surface 211 of the first die pad 21) is covered with a plating layer (for example, metal containing Ag) like the upper surface of the pad portion 312. good.
- the pad portion 422 is flat (or substantially flat).
- the pair of second support terminals 43 are located apart from each other in the second direction y.
- the pair of second support terminals 43 are connected to both ends of the second die pad 22 in the second direction y.
- the second die pad 22 is supported by the pair of second support terminals 43.
- the pair of second support terminals 43 are arranged on both sides of the plurality of second intermediate terminals 41 in the second direction y, and are sandwiched between the pair of second side terminals 42 in the second direction y. Have been placed.
- Each of the pair of second support terminals 43 has a lead portion 431, a pad portion 432 and a connecting portion 433.
- the lead portion 431 is a band extending along the first direction x when viewed along the thickness direction z.
- the lead portion 431 includes a portion protruding from the sealing resin 6 along the first direction x and a portion covered with the sealing resin 6 when viewed along the thickness direction z.
- the portion of the lead portion 431 protruding from the sealing resin 6 is bent in a gull-wing shape.
- the portion of the lead portion 431 exposed from the sealing resin 6 may be covered with a plating layer (for example, an alloy containing Sn such as solder) as in the lead portion 311.
- a plating layer for example, an alloy containing Sn such as solder
- the pad portion 432 is connected to the lead portion 431 and is covered with the sealing resin 6.
- the dimension of the pad portion 432 in the second direction y is larger than the dimension of the lead portion 431.
- the pad portion 432 extends in the first direction x. Similar to the upper surface of the pad portion 312, the upper surface of the pad portion 432 (the surface facing the same direction as the first main surface 211 of the first die pad 21) may be covered with a plating layer (for example, metal containing Ag). good.
- the pad portion 432 is flat (or substantially flat).
- the connecting portion 433 is connected to the pad portion 432 and is covered with the sealing resin 6.
- the connecting portion 433 extends in the second direction y.
- the end of the connecting portion 433 is connected to the second die pad 22. Even if the upper surface of the connecting portion 433 (the surface facing the same direction as the first main surface 211 of the first die pad 21) is covered with a plating layer (for example, metal containing Ag) like the upper surface of the pad portion 312. good.
- the plurality of first wires 51, the plurality of second wires 52, the plurality of third wires 53, and the plurality of fourth wires 54 include a first die pad 21, a second die pad 22, a plurality of first terminals 3, and a plurality of. Together with the second terminal 4, the first semiconductor element 11, the second semiconductor element 12, and the insulating element 13 form a conduction path for performing a predetermined function.
- the material of each of the plurality of first wires 51, the plurality of second wires 52, the plurality of third wires 53, and the plurality of fourth wires 54 is a metal containing, for example, any of Au, Cu, and Al.
- the plurality of first wires 51 are joined to the insulating element 13 and the specific semiconductor element 10 (the second semiconductor element 12 in the semiconductor device A1).
- the insulating element 13 and the specific semiconductor element 10 are electrically connected to each other by the plurality of first wires 51.
- each of the plurality of first wires 51 is bonded to one of the plurality of second electrodes 132 of the insulating element 13 and one of the plurality of electrodes 121 of the second semiconductor element 12.
- the plurality of first wires 51 are arranged along the second direction y. Each of the plurality of first wires 51 straddles the pad gap 23.
- each of the plurality of first wires 51 has a first standing portion 511, a first inclined portion 512, a first extending portion 513, a first bent portion 514, and a second bent portion 515.
- the first standing portion 511 rises from any of the plurality of second electrodes 132 of the insulating element 13 in the thickness direction z.
- the first inclined portion 512 extends inclined from any of the plurality of electrodes 121 of the second semiconductor element 12 toward the insulating element 13 in the thickness direction z.
- the first extending portion 513 is located between the first standing portion 511 and the first inclined portion 512 when viewed along the thickness direction z.
- the first bent portion 514 is connected to the first standing portion 511 and the first extending portion 513.
- the second bent portion 515 is connected to the first inclined portion 512 and the first extending portion 513.
- each of the plurality of first wires 51 straddles the pad gap 23.
- the inclination angle ⁇ 1 of the first extending portion 513 with respect to the plane along the first direction x and the second direction y is larger than the inclination angle ⁇ 1 of the first inclined portion 512 with respect to the plane. It's small.
- each of the plurality of first wires 51 has a trapezoidal shape when viewed along a direction orthogonal to the thickness direction z.
- the inclination angle ⁇ 1 of the first extending portion 513 is preferably 0 ° (or substantially 0 °).
- the boundary 513A between the first extension portion 513 and the first bending portion 514 is more insulated than the boundary 513B between the first extension portion 513 and the second bending portion 515. It is located away from the element 13. Further, when viewed along the thickness direction z, the boundary 512B between the first inclined portion 512 and the second bent portion 515 is located away from the specific semiconductor element 10.
- the first inclined portion 512 of each of the plurality of first wires 51 is bonded to the specific semiconductor element 10 (in the semiconductor device A1, any one of the plurality of electrodes 121 of the second semiconductor element 12). It has a first tip 512A.
- the dimension t1 of the first tip 512A in the thickness direction z gradually becomes smaller as the distance from the first extending portion 513 of the first wire 51 increases.
- the plurality of second wires 52 are attached to the insulating element 13 and the specific die pad 20 (the first die pad 21 in the semiconductor device A1) of the first semiconductor element 11 and the second semiconductor element 12. It is bonded to the mounted semiconductor element (first semiconductor element 11 in the semiconductor device A1).
- the insulating element 13 and the semiconductor element mounted on the specific die pad 20 are electrically connected to each other by the plurality of second wires 52.
- each of the plurality of second wires 52 is joined to any one of the plurality of first electrodes 131 of the insulating element 13 and one of the plurality of electrodes 111 of the first semiconductor element 11.
- the plurality of second wires 52 are arranged along the second direction y. The plurality of second wires 52 overlap with the specific die pad 20 when viewed along the thickness direction z.
- each of the plurality of second wires 52 has a second standing portion 521, a second inclined portion 522, a second extending portion 523, a third bent portion 524, and a fourth bent portion 525.
- the second standing portion 521 rises from any of the plurality of first electrodes 131 of the insulating element 13 in the thickness direction z.
- the second inclined portion 522 extends inclined from any of the plurality of electrodes 111 of the first semiconductor element 11 toward the insulating element 13 in the thickness direction z.
- the second extending portion 523 is located between the second standing portion 521 and the second inclined portion 522 when viewed along the thickness direction z.
- the third bent portion 524 is connected to the second standing portion 521 and the second extending portion 523.
- the fourth bent portion 525 is connected to the second inclined portion 522 and the second extending portion 523.
- the length L2 of each of the second extending portions 523 of the plurality of second wires 52 is the length of each of the first extending portions 513 of the plurality of first wires 51 shown in FIG. It is smaller than L1 (see FIG. 8).
- the length L2 of the second extension portion 523 extends from the boundary 523A between the second extension portion 523 and the third bending portion 524 to the boundary 523B between the second extension portion 523 and the fourth bending portion 525.
- the length L1 of the first extension portion 513 is the distance from the boundary 513A between the first extension portion 513 and the first bending portion 514 to the boundary 513B between the first extension portion 513 and the second bending portion 515.
- each of the plurality of second wires 52 has a trapezoidal shape when viewed along a direction orthogonal to the thickness direction z.
- the inclination angle ⁇ 2 of the second extending portion 523 is preferably 0 ° (or substantially 0 °). Further, when viewed along the thickness direction z, the boundary 522B between the second inclined portion 522 and the fourth bent portion 525 is located away from the semiconductor element mounted on the specific die pad 20.
- the second inclined portion 522 of each of the plurality of second wires 52 is one of a plurality of electrodes 111 of the first semiconductor element 11 in the semiconductor device A1 (in the semiconductor device A1), the second inclined portion 522 is mounted on the specific die pad 20.
- the dimension t2 of the second tip 522A in the thickness direction z gradually becomes smaller as the distance from the second extending portion 523 of the second wire 52 increases.
- the shape of the first tip 512A of each of the first inclined portions 512 of the plurality of first wires 51 shown in FIG. 9 is obtained by the method of forming the plurality of first wires 51 shown in FIGS. 14 and 15. As shown in FIG. 14, after moving the capillary 80 directly above any one of the plurality of electrodes 121 of the second semiconductor element 12 (specific semiconductor element 10), the capillary 80 is lowered to bring the tip of the capillary 80 to the tip. Press against the electrode 121. Then, as shown in FIG. 15, the wire 81 is cut by raising the capillary 80. By this forming method, the shape of the first tip 512A can be obtained.
- the shape of the second tip 522A of each of the second inclined portions 522 of the plurality of second wires 52 shown in FIG. 11 is obtained by the method of forming the plurality of second wires 52 shown in FIGS. 16 and 17.
- the capillary 80 is lowered to obtain the capillary.
- the tip of 80 is pressed against the electrode 111.
- the wire 81 is cut by raising the capillary 80.
- first tip 512A of the first inclined portion 512 of any one of the plurality of first wires 51 After forming the first tip 512A of the first inclined portion 512 of any one of the plurality of first wires 51 by the forming method shown in FIGS. 14 and 15, a plurality of first ends are formed by the forming method shown in FIGS. 16 and 17.
- the second tip 522A of the second inclined portion 522 of any of the two wires 52 is formed.
- each of the plurality of third wires 53 has one of the plurality of electrodes 111 of the first semiconductor element 11 and one of the plurality of first terminals 3 (plurality of first intermediate terminals). It is joined to any one of the pad portion 312 of 31 and the pad portion 322 of the pair of first side terminals 32 and the pad portion 332 of the pair of first support terminals 33).
- the plurality of third wires 53 conduct the first semiconductor device 11 to at least one of the plurality of first terminals 3.
- each of the plurality of fourth wires 54 has one of the plurality of electrodes 121 of the second semiconductor element 12 and one of the plurality of second terminals 4 (plurality of second intermediate terminals). It is joined to any one of the pad portion 412 of 41, the pad portion 422 of the pair of second side terminals 42, and the pad portion 432 of the pair of second support terminals 43).
- the plurality of fourth wires 54 conduct the second semiconductor device 12 to at least one of the plurality of second terminals 4.
- the sealing resin 6 includes a first semiconductor element 11, a second semiconductor element 12, an insulating element 13, a first die pad 21, a second die pad 22, a plurality of first terminals 3, and a plurality of. It covers each part of the second terminal 4. As shown in FIG. 6, the sealing resin 6 further covers a plurality of first wires 51, a plurality of second wires 52, a plurality of third wires 53, and a plurality of fourth wires 54.
- the sealing resin 6 has electrical insulation.
- the sealing resin 6 insulates the first die pad 21 and the second die pad 22 from each other.
- the sealing resin 6 is made of a material containing, for example, a black epoxy resin.
- the sealing resin 6 has a rectangular shape when viewed along the thickness direction z.
- the sealing resin 6 has a top surface 61, a bottom surface 62, a pair of first side surfaces 63, and a pair of second side surfaces 64.
- the top surface 61 and the bottom surface 62 are located apart from each other in the thickness direction z.
- the top surface 61 and the bottom surface 62 face opposite to each other in the thickness direction z.
- Each of the top surface 61 and the bottom surface 62 is flat (or substantially flat).
- the pair of first side surfaces 63 are connected to the top surface 61 and the bottom surface 62, and are located apart from each other in the first direction x.
- Each of the plurality of first terminals 3 is exposed from the first side surface 63 located on one side of the first direction x of the pair of first side surfaces 63.
- Each of the plurality of second terminals 4 is exposed from the first side surface 63 located on the other side of the first direction x of the pair of first side surfaces 63.
- each of the pair of first side surfaces 63 includes a first upper portion 631, a first lower portion 632, and a first intermediate portion 633.
- first upper portion 631 one end in the thickness direction z is connected to the top surface 61, and the other end in the thickness direction z is connected to the first intermediate portion 633.
- the first upper portion 631 is inclined with respect to the top surface 61.
- first lower portion 632 one end in the thickness direction z is connected to the bottom surface 62, and the other end in the thickness direction z is connected to the first intermediate portion 633.
- the first lower portion 632 is inclined with respect to the bottom surface 62.
- first intermediate portion 633 one end in the thickness direction z is connected to the first upper portion 631, and the other end in the thickness direction z is connected to the first lower portion 632.
- the first intermediate portion 633 is along both the thickness direction z and the second direction y.
- the first intermediate portion 633 is located outward from the top surface 61 and the bottom surface 62 when viewed along the thickness direction z. A part of each of the plurality of first terminals 3 or a part of each of the plurality of second terminals 4 is exposed from the first intermediate portion 633.
- the pair of second side surfaces 64 are connected to the top surface 61 and the bottom surface 62, and are located apart from each other in the second direction y. As shown in FIGS. 1 and 2, the first die pad 21, the second die pad 22, the plurality of first terminals 3, and the plurality of second terminals 4 are located apart from the pair of second side surfaces 64.
- each of the pair of second side surfaces 64 includes a second upper portion 641, a second lower portion 642, and a second intermediate portion 643.
- the second upper portion 641 one end in the thickness direction z is connected to the top surface 61, and the other end in the thickness direction z is connected to the second intermediate portion 643.
- the second upper portion 641 is inclined with respect to the top surface 61.
- the second lower portion 642 one end in the thickness direction z is connected to the bottom surface 62, and the other end in the thickness direction z is connected to the second intermediate portion 643.
- the second lower portion 642 is inclined with respect to the bottom surface 62.
- the second intermediate portion 643 one end in the thickness direction z is connected to the second upper portion 641, and the other end in the thickness direction z is connected to the second lower portion 642.
- the second intermediate portion 643 is along both the thickness direction z and the second direction y.
- the second intermediate portion 643 is located outward from the top surface 61 and the bottom surface 62 when viewed along the thickness direction z.
- a half-bridge circuit including a low-side (low-potential side) switching element and a high-side (high-potential side) switching element is generally configured.
- these switching elements are MOSFETs.
- the reference potentials of the source of the switching element and the gate driver for driving the switching element are both ground.
- the reference potentials of the source of the switching element and the gate driver for driving the switching element both correspond to the potentials at the output node of the half-bridge circuit.
- the reference potential of the gate driver that drives the high-side switching element changes.
- the reference potential is equivalent to the voltage applied to the drain of the switching element (for example, 600 V or more).
- the semiconductor device A1 the ground of the first semiconductor element 11 and the ground of the second semiconductor element 12 are separated from each other. Therefore, when the semiconductor device A1 is used as a gate driver for driving the high-side switching element, a voltage equivalent to the voltage applied to the drain of the high-side switching element is transiently connected to the ground of the second semiconductor element 12. Is applied.
- the semiconductor device A1 has an insulating element 13 that insulates the first circuit including the first semiconductor element 11 mounted on the first die pad 21 and the second circuit including the second semiconductor element 12 mounted on the second die pad 22. Be prepared.
- the insulating element 13 is mounted on the specific die pad 20 (the first die pad 21 in the semiconductor device A1).
- the semiconductor device A1 further includes a first wire 51 bonded to an insulating element 13 and a specific semiconductor element 10 (second semiconductor element 12 in the semiconductor device A1).
- the first wire 51 is covered with the sealing resin 6.
- the first wire 51 has a first upright portion 511, a first inclined portion 512, a first extending portion 513, a first bent portion 514, and a second bent portion 515.
- the inclination angle ⁇ 1 of the first extension portion 513 with respect to the plane along the first direction x and the second direction y is smaller than the inclination angle ⁇ 1 of the first inclination portion 512 with respect to the plane.
- the first wire 51 forms a skeleton structure with the first bent portion 514 and the second bent portion 515 as contact points. Therefore, when the sealing resin 6 is formed in the manufacturing process of the semiconductor device A1, the deformation of the first wire 51 due to the flow of the molten resin is suppressed. As a result, the distance between the insulating element 13 and the first extending portion 513 becomes larger. Therefore, according to the semiconductor device A1, it is possible to improve the withstand voltage.
- the boundary 513A between the first extension portion 513 and the first bending portion 514 is more insulated than the boundary 513B between the first extension portion 513 and the second bending portion 515. It is located away from the element 13.
- the interval between the section of the first extending portion 513 that overlaps the insulating element 13 and the insulating element 13 in the thickness direction z is set between the other section and the insulating element 13. Can be greater than that interval. This contributes to the improvement of the dielectric strength of the semiconductor device A1.
- the boundary 512B between the first inclined portion 512 and the second bent portion 515 is located away from the specific semiconductor element 10 when viewed along the thickness direction z. As a result, it is possible to prevent the length of the first wire 51 from becoming excessively large while improving the withstand voltage of the semiconductor device A1.
- the semiconductor device A1 further includes an insulating element 13 and a second wire 52 bonded to the semiconductor element mounted on the specific die pad 20 (the first semiconductor element 11 in the semiconductor device A1).
- the second wire 52 is covered with the sealing resin 6.
- the second wire 52 has a second upright portion 521, a second inclined portion 522, a second extending portion 523, a third bent portion 524, and a fourth bent portion 525.
- the inclination angle ⁇ 2 of the second extending portion 523 with respect to the plane along the first direction x and the second direction y is smaller than the inclination angle ⁇ 2 of the second inclined portion 522 with respect to the plane.
- the second wire 52 forms a skeleton structure with the third bent portion 524 and the fourth bent portion 525 as contacts. Therefore, when the sealing resin 6 is formed in the manufacturing process of the semiconductor device A1, the deformation of the second wire 52 due to the flow of the molten resin is suppressed. As a result, the distance between the insulating element 13 and the second extending portion 523 becomes larger, so that the withstand voltage of the semiconductor device A1 can be further improved.
- the boundary 522B between the second inclined portion 522 and the fourth bent portion 525 is located away from the semiconductor element mounted on the specific die pad 20 when viewed along the thickness direction z. As a result, it is possible to prevent the length of the second wire 52 from becoming excessively large while improving the withstand voltage of the semiconductor device A1.
- the insulating element 13 is located between the first semiconductor element 11 and the second semiconductor element 12.
- the length L2 (see FIG. 10) of the second extending portion 523 of the second wire 52 is shorter than the length L1 (see FIG. 8) of the first extending portion 513 of the first wire 51.
- the distance between the insulating element 13 and the semiconductor element mounted on the specific die pad 20 can be made smaller while improving the withstand voltage of the semiconductor device A1.
- the increase in size of the semiconductor device A1 is suppressed.
- the plurality of first terminals 3 are exposed from the first side surface 63 located on one side of the first direction x of the pair of first side surfaces 63 of the sealing resin 6.
- the plurality of second terminals 4 are exposed from the first side surface 63 located on the other side of the first direction x of the pair of first side surfaces 63.
- the first die pad 21, the second die pad 22, the plurality of first terminals 3, and the plurality of second terminals 4 are located apart from the pair of second side surfaces 64 of the sealing resin 6. Therefore, in the semiconductor device A1, metal members such as island supports are not exposed from each of the pair of second side surfaces 64. With this configuration, the metal member exposed from the sealing resin 6 does not exist in the vicinity of the plurality of second terminals 4 to which a higher voltage is applied than the plurality of first terminals 3. Therefore, according to the semiconductor device A1, the withstand voltage can be further improved.
- FIGS. 18 and 19 The semiconductor device A2 according to the second embodiment of the present disclosure will be described with reference to FIGS. 18 and 19.
- the same or similar elements as the above-mentioned semiconductor device A1 are designated by the same reference numerals, and duplicate description will be omitted.
- FIG. 18 is transparent to the sealing resin 6 for convenience of understanding.
- the permeated sealing resin 6 is shown by an imaginary line.
- the configuration of the first die pad 21 is different from the configuration of the semiconductor device A1 described above.
- a plurality of holes 213 are formed in the specific die pad 20 (the first die pad 21 in A2).
- Each of the plurality of holes 213 is formed in the region of the first die pad 21 located between the first semiconductor element 11 and the insulating element 13 in the first direction x.
- the number of holes 213 is not particularly limited, but in the semiconductor device A2, three holes 213 are formed.
- Each of the plurality of holes 213 is an elongated hole extending in the second direction y.
- the shape of each of the plurality of holes 213 can be freely set.
- the pair of first support terminals 33 and the plurality of holes 213 are arranged on a straight line N (dashed line) along the second direction y.
- the semiconductor device A2 has an insulating element 13 that insulates the first circuit including the first semiconductor element 11 mounted on the first die pad 21 and the second circuit including the second semiconductor element 12 mounted on the second die pad 22. Be prepared.
- the insulating element 13 is mounted on the specific die pad 20 (the first die pad 21 in the semiconductor device A2).
- the semiconductor device A2 further includes a first wire 51 bonded to an insulating element 13 and a specific semiconductor element 10 (second semiconductor element 12 in the semiconductor device A2).
- the first wire 51 is covered with the sealing resin 6.
- the first wire 51 has a first upright portion 511, a first inclined portion 512, a first extending portion 513, a first bent portion 514, and a second bent portion 515.
- the inclination angle ⁇ 1 of the first extension portion 513 with respect to the plane along the first direction x and the second direction y is smaller than the inclination angle ⁇ 1 of the first inclination portion 512 with respect to the plane. Therefore, the semiconductor device A2 can also improve the withstand voltage. Further, the semiconductor device A2 has the same effect as the semiconductor device A1 by adopting the same configuration as the semiconductor device A1.
- the hole 213 is formed in the specific die pad 20.
- the area of the first die pad 21 is larger than the area of the second die pad 22 when viewed along the thickness direction z. Therefore, in forming the sealing resin 6, voids are likely to be generated in the portion of the sealing resin 6 located in the vicinity of the specific die pad 20. Therefore, by forming the holes 213 in the specific die pad 20, the molten resin injected into the mold in forming the sealing resin 6 can be sufficiently filled. That is, the semiconductor device A2 can effectively suppress the generation of voids in the sealing resin 6 as compared with the case where the specific die pad 20 is not provided with the holes 213.
- FIG. 20 is transparent to the sealing resin 6 for convenience of understanding.
- the permeated sealing resin 6 is shown by an imaginary line.
- the arrangement configuration of the insulating element 13 is different from the configuration of the semiconductor device A1 described above.
- the insulating element 13 is mounted on the second main surface 221 of the second die pad 22. Therefore, in the semiconductor device A3, the second die pad 22 corresponds to the specific die pad 20, and the first semiconductor element 11 corresponds to the specific semiconductor element 10.
- each of the plurality of first wires 51 includes one of the plurality of first electrodes 131 of the insulating element 13 and one of the plurality of electrodes 111 of the first semiconductor element 11. It is joined to. As a result, the first upright portion 511 of each of the plurality of first wires 51 rises from any of the plurality of first electrodes 131 of the insulating element 13 in the thickness direction z. The first inclined portion 512 of each of the plurality of first wires 51 extends inclined from any of the plurality of electrodes 111 of the first semiconductor element 11 toward the insulating element 13 in the thickness direction z. ..
- each of the plurality of second wires 52 includes one of the plurality of second electrodes 132 of the insulating element 13 and one of the plurality of electrodes 121 of the second semiconductor element 12. It is joined to. As a result, the second upright portion 521 of each of the plurality of second wires 52 rises from any of the plurality of second electrodes 132 of the insulating element 13 in the thickness direction z. The second inclined portion 522 of each of the plurality of second wires 52 extends inclined from any of the plurality of electrodes 121 of the second semiconductor element 12 toward the insulating element 13 in the thickness direction z. ..
- the semiconductor device A3 has an insulating element 13 that insulates the first circuit including the first semiconductor element 11 mounted on the first die pad 21 and the second circuit including the second semiconductor element 12 mounted on the second die pad 22. Be prepared.
- the insulating element 13 is mounted on the specific die pad 20 (second die pad 22 in the semiconductor device A3).
- the semiconductor device A3 further includes a first wire 51 bonded to the insulating element 13 and the specific semiconductor element 10 (the first semiconductor element 11 in the semiconductor device A3).
- the first wire 51 is covered with the sealing resin 6. As shown in FIG. 22, the first wire 51 has a first upright portion 511, a first inclined portion 512, a first extending portion 513, a first bent portion 514, and a second bent portion 515.
- the inclination angle ⁇ 1 of the first extension portion 513 with respect to the plane along the first direction x and the second direction y is smaller than the inclination angle ⁇ 1 of the first inclination portion 512 with respect to the plane. Therefore, the semiconductor device A3 can also improve the withstand voltage. Further, the semiconductor device A3 has the same effect as the semiconductor device A1 by adopting the same configuration as the semiconductor device A1.
- the present disclosure is not limited to the above-described embodiment.
- the specific configuration of each part of the present disclosure can be freely redesigned.
- A1, A2, A3 Semiconductor device 10: Specific semiconductor element 11: First semiconductor element (control element) 111: Electrode 12: Second semiconductor element (driving element) 121: Electrode 13: Insulation element 131: First electrode 132: 2nd electrode 133: Passion film 134: Surface protective film 134A: 1st film 134B: 2nd film 20: Specific die pad 21: 1st die pad 211: 1st main surface 212: 1st back surface 213: Hole 22: 2nd die pad 221: 2nd main surface 222: 2nd back surface 23: Pad gap 3: 1st terminal 31: 1st intermediate terminal 311: Lead part 312: Pad part 32: 1st side terminal 321: Lead part 322: Pad part 33: 1st support terminal 331: Lead part 332: Pad part 4: 2nd terminal 41: 2nd intermediate terminal 411: Lead part 42: Pad part 42: 2nd side terminal 421: Lead part 422: Pad part 43: 2nd support Terminal 431: Lead part 432: Pad part
Abstract
Description
11:第1半導体素子(制御素子) 111:電極
12:第2半導体素子(駆動素子) 121:電極
13:絶縁素子 131:第1電極
132:第2電極 133:パッシベーション膜
134:表面保護膜 134A:第1膜
134B:第2膜 20:特定ダイパッド
21:第1ダイパッド 211:第1主面
212:第1裏面 213:孔
22:第2ダイパッド 221:第2主面
222:第2裏面 23:パッド隙間
3:第1端子 31:第1中間端子
311:リード部 312:パッド部
32:第1側端子 321:リード部
322:パッド部 33:第1支持端子
331:リード部 332:パッド部
4:第2端子 41:第2中間端子
411:リード部 42:パッド部
42:第2側端子 421:リード部
422:パッド部 43:第2支持端子
431:リード部 432:パッド部
433:連結部 51:第1ワイヤ
511:第1起立部 512:第1傾斜部
512A:第1先端 512B:境界
513:第1延出部 513A,513B:境界
514:第1屈曲部 515:第2屈曲部
52:第2ワイヤ 521:第2起立部
522:第2傾斜部 522A:第2先端
522B:境界 523:第2延出部
523A,523B:境界 524:第3屈曲部
525:第4屈曲部 53:第3ワイヤ
54;第4ワイヤ 6:封止樹脂
61:頂面 62:底面
63:第1側面 631:第1上部
632:第1下部 633:第1中間部
64:第2側面 641:第2上部
642:第2下部 643:第2中間部
80:キャピラリ 81:ワイヤ
z:厚さ方向 x:第1方向 y:第2方向
Claims (17)
- 第1ダイパッドと、
第1方向において前記第1ダイパッドから離間配置され、かつ前記第1ダイパッドとは相対的に電位が異なる第2ダイパッドと、
前記第1ダイパッドに搭載され、かつ前記第1ダイパッドとともに第1回路を構成する第1半導体素子と、
前記第2ダイパッドに搭載され、かつ前記第2ダイパッドとともに第2回路を構成する第2半導体素子と、
前記第1ダイパッドおよび前記第2ダイパッドのいずれか一方を特定ダイパッドと称し、他方を非特定ダイパッドと称する場合に、前記特定ダイパッドに搭載されるとともに、前記第1回路と前記第2回路との信号の送受信を中継し、かつ前記第1回路および前記第2回路を互いに絶縁する絶縁素子と、
前記第1半導体素子および前記第2半導体素子のうち、前記非特定ダイパッドに搭載された方を特定半導体素子と称し、前記特定ダイパッドに搭載された方を非特定半導体素子と称する場合に、前記絶縁素子と前記特定半導体素子とに接合された第1ワイヤと、
前記第1ダイパッド、前記第2ダイパッド、前記第1半導体素子、前記第2半導体素子、および前記絶縁素子を覆うとともに、前記第1ダイパッドおよび前記第2ダイパッドを互いに絶縁する封止樹脂と、を備え、
前記第1ワイヤは、前記第1方向において前記第1ダイパッドと前記第2ダイパッドとの間に設けられたパッド隙間を跨ぎ、
前記第1ワイヤは、第1起立部、第1傾斜部、第1延出部、第1屈曲部および第2屈曲部を含み、前記第1起立部は、前記絶縁素子から前記第1ダイパッドの厚さ方向に立ち上がっており、前記第1傾斜部は、前記特定半導体素子から前記絶縁素子に向けて前記厚さ方向に対して傾斜して延びており、前記第1延出部は、前記厚さ方向に沿って視て前記第1起立部と前記第1傾斜部との間に位置しており、前記第1屈曲部は、前記第1起立部および前記第1延出部につながっており、前記第2屈曲部は、前記第1傾斜部および前記第1延出部につながっており、
前記厚さ方向に直交する平面に対する前記第1延出部の傾斜角は、前記平面に対する前記第1傾斜部の傾斜角よりも小である、半導体装置。 - 前記第1延出部が前記パッド隙間を跨いでいる、請求項1に記載の半導体装置。
- 前記厚さ方向において、前記第1延出部と前記第1屈曲部との境界が、前記第1延出部と前記第2屈曲部との境界よりも前記絶縁素子から離れている、請求項2に記載の半導体装置。
- 前記厚さ方向に沿って視て、前記第1傾斜部と前記第2屈曲部との境界が、前記特定半導体素子から離れている、請求項2または3に記載の半導体装置。
- 第2ワイヤをさらに備えており、
前記第1方向において、前記絶縁素子は、前記第1半導体素子と前記第2半導体素子との間に位置し、
前記第2ワイヤは、前記絶縁素子と前記非特定半導体素子とに接合されるとともに、前記封止樹脂に覆われており、
前記第2ワイヤは、第2起立部、第2傾斜部、第2延出部、第3屈曲部、および第4屈曲部を有し、前記第2起立部は、前記絶縁素子から前記厚さ方向に立ち上がっており、前記第2傾斜部は、前記非特定半導体素子から前記絶縁素子に向けて前記厚さ方向に対して傾斜して延びており、前記第2延出部は、前記厚さ方向に沿って視て前記第2起立部と前記第2傾斜部との間に位置しており、前記第3屈曲部は、前記第2起立部および前記第2延出部につながり、前記第4屈曲部は、前記第2傾斜部および前記第2延出部につながり、
前記第2延出部の長さは、前記第1延出部の長さよりも小である、請求項2ないし4のいずれかに記載の半導体装置。 - 前記平面に対する前記第2延出部の傾斜角は、前記平面に対する前記第2傾斜部の傾斜角よりも小である、請求項5に記載の半導体装置。
- 前記厚さ方向に沿って視て、前記第2傾斜部と前記第4屈曲部との境界が、前記非特定半導体素子から離れて位置する、請求項6に記載の半導体装置。
- 前記第1ワイヤにおいて、前記特定半導体素子に接合される前記第1傾斜部の第1先端の前記厚さ方向における寸法は、前記第1延出部から離れるほど小となり、
前記第2ワイヤにおいて、前記非特定半導体素子に接合される前記第2傾斜部の第2先端の前記厚さ方向における寸法は、前記第2延出部から離れるほど小となる、請求項6または7に記載の半導体装置。 - 前記第1回路に電源電圧が供給され、かつ前記第2回路に電源電圧が供給された状態において、前記第2回路に対する前記電源電圧は、前記第1回路に対する前記電源電圧よりも大である、請求項5ないし8のいずれかに記載の半導体装置。
- それぞれが前記第1ダイパッドに対して前記第1方向の一方側に位置する部分を含んでいる複数の第1端子と、
それぞれが前記第2ダイパッドに対して前記第1方向の他方側に位置する部分を含んでいる複数の第2端子と、
をさらに備えており、
前記複数の第1端子は、前記厚さ方向および前記第1方向に直交する第2方向に互いに離間配置されており、かつ少なくともいずれか1つが前記第1回路に導通しており、
前記複数の第2端子は、前記第2方向に互いに離間配置されており、かつ少なくともいずれか1つが前記第2回路に導通しており、
前記封止樹脂は、前記第1方向において互いに離間する一対の第1側面と、前記第2方向において互いに離間する一対の第2側面と、を有し、
前記一対の第1側面のうちの一方の第1側面から前記複数の第1端子の各々が露出し、前記一対の第1側面のうちの他方の第1側面から前記複数の第2端子の各々が露出している、請求項9に記載の半導体装置。 - 前記第1方向に沿って視て、前記第2ダイパッドは、前記第1ダイパッドに重なる、請求項10に記載の半導体装置。
- 前記第1ダイパッド、前記第2ダイパッド、前記複数の第1端子、および前記複数の第2端子は、前記一対の第2側面から離間配置されている、請求項10または11に記載の半導体装置。
- 前記厚さ方向に沿って視て、前記複数の第1端子の各々は、前記一方の第1側面から前記第1方向に沿って突出した部分を含み、
前記厚さ方向に沿って視て、前記複数の第2端子の各々は、前記他方の第1側面から前記第1方向に沿って突出した部分を含む、請求項12に記載の半導体装置。 - 前記複数の第1端子は、前記第2方向において互いに離間した一対の第1支持端子を含み、
前記第1ダイパッドは、前記第2方向において互いに離間した一対の第1端縁を有しており、前記一対の第1支持端子は、前記一対の第1端縁にそれぞれつながっている、請求項13に記載の半導体装置。 - 前記複数の第2端子は、前記第2方向において互いに離間した一対の第2支持端子を含み、
前記第2ダイパッドは、前記第2方向において互いに離間した一対の第2端縁を有しており、前記一対の第2支持端子は、前記一対の第2端縁にそれぞれつながっている、請求項14に記載の半導体装置。 - 前記特定ダイパッドには、前記厚さ方向に貫通する孔が設けられ、
前記厚さ方向に沿って視て、前記孔は、前記絶縁素子と、前記非特定半導体素子との間に位置する、請求項10ないし15のいずれかに記載の半導体装置。 - 前記絶縁素子は、インダクティブ型である、請求項1ないし16のいずれかに記載の半導体装置。
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JPH07176558A (ja) * | 1993-12-20 | 1995-07-14 | Mitsubishi Electric Corp | ワイヤボンディング方法および半導体装置 |
JPH11145179A (ja) * | 1997-11-11 | 1999-05-28 | Matsushita Electron Corp | 半導体装置 |
JP2004356382A (ja) * | 2003-05-29 | 2004-12-16 | Renesas Technology Corp | 半導体集積回路装置 |
US20120168901A1 (en) * | 2010-12-29 | 2012-07-05 | Stmicroelectronics S.R.L. | Semiconductor electronic device with an integrated device with an integrated galvanic isolator element and related assembly process |
JP2016207714A (ja) * | 2015-04-16 | 2016-12-08 | ローム株式会社 | 半導体装置 |
US20200168534A1 (en) * | 2018-11-28 | 2020-05-28 | Texas Instruments Incorporated | Multi-chip module including standalone capacitors |
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JPH07176558A (ja) * | 1993-12-20 | 1995-07-14 | Mitsubishi Electric Corp | ワイヤボンディング方法および半導体装置 |
JPH11145179A (ja) * | 1997-11-11 | 1999-05-28 | Matsushita Electron Corp | 半導体装置 |
JP2004356382A (ja) * | 2003-05-29 | 2004-12-16 | Renesas Technology Corp | 半導体集積回路装置 |
US20120168901A1 (en) * | 2010-12-29 | 2012-07-05 | Stmicroelectronics S.R.L. | Semiconductor electronic device with an integrated device with an integrated galvanic isolator element and related assembly process |
JP2016207714A (ja) * | 2015-04-16 | 2016-12-08 | ローム株式会社 | 半導体装置 |
US20200168534A1 (en) * | 2018-11-28 | 2020-05-28 | Texas Instruments Incorporated | Multi-chip module including standalone capacitors |
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