WO2017146148A1 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- WO2017146148A1 WO2017146148A1 PCT/JP2017/006830 JP2017006830W WO2017146148A1 WO 2017146148 A1 WO2017146148 A1 WO 2017146148A1 JP 2017006830 W JP2017006830 W JP 2017006830W WO 2017146148 A1 WO2017146148 A1 WO 2017146148A1
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/22—Diffusion of impurity materials, e.g. doping materials, electrode materials, into or out of a semiconductor body, or between semiconductor regions; Interactions between two or more impurities; Redistribution of impurities
- H01L21/221—Diffusion of impurity materials, e.g. doping materials, electrode materials, into or out of a semiconductor body, or between semiconductor regions; Interactions between two or more impurities; Redistribution of impurities of killers
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Definitions
- the present invention relates to a semiconductor device.
- Patent Document 1 US Patent No. 7842590
- n-type impurities such as protons
- the defects such as protons terminate defects and the like in the semiconductor substrate, and the carrier lifetime is recovered.
- the carrier lifetime on the back surface side of the semiconductor substrate becomes too long, the tail current in reverse recovery operation becomes large, and the reverse recovery loss will increase.
- a semiconductor device provided with a semiconductor substrate is provided.
- a first region of a first conductivity type may be formed on the front surface side of the semiconductor substrate.
- a drift region of the second conductivity type may be formed on the back surface side of the semiconductor substrate than the first region.
- a buffer region of the second conductivity type may be formed on the back surface side of the semiconductor substrate rather than the drift region.
- the buffer region may include one or more peaks of impurity concentration higher than the impurity concentration of the drift region.
- the semiconductor substrate may be provided with a lifetime killer which is disposed on the back surface side of the semiconductor substrate to shorten the carrier lifetime. The peak of the concentration of the lifetime killer may be disposed between the peak on the front surface side of the semiconductor substrate among the peaks of the impurity concentration in the buffer region and the back surface of the semiconductor substrate.
- the semiconductor substrate further includes a second region of the first conductivity type formed between the peak on the back surface side of the semiconductor substrate among the peaks of the impurity concentration in the buffer region and the back surface of the semiconductor substrate.
- the peak of the concentration of lifetime killer may be disposed on the front surface side of the semiconductor substrate than the peak of the impurity concentration in the second region.
- the impurity concentration distribution in the buffer region may have a plurality of peaks.
- the peak of the concentration of the lifetime killer may be disposed closer to the back surface side of the semiconductor substrate than the peak on the back surface side of the semiconductor substrate among the peaks of the impurity concentration in the buffer region.
- the distance between the lifetime killer concentration peak and the impurity concentration peak in the second region is the distance between the lifetime killer concentration peak and the peak on the back surface side of the semiconductor substrate among the impurity concentration peaks in the buffer region It may be bigger than.
- a lifetime killer concentration peak may be placed between any two peaks of impurity concentration in the buffer region.
- the concentration peak of the lifetime killer may be located at a position not overlapping any of the impurity concentration peaks in the buffer region.
- the peak of the concentration of the lifetime killer may be higher than the peak of the impurity concentration peak in the buffer region than the peak on the back surface side of the semiconductor substrate.
- the peak of concentration of lifetime killer may be lower than the peak of concentration in the second region.
- Protons may be injected into the buffer region.
- the lifetime killer may be helium.
- the full width at half maximum of the concentration distribution of the lifetime killer in the depth direction of the semiconductor substrate may be 5 ⁇ m or more.
- the buffer region may have two peaks of impurity concentration sandwiching a peak of concentration of lifetime killer, and the full width at half maximum of concentration distribution of lifetime killer may be 70% or more of the interval of the two peaks.
- the semiconductor substrate may have a transistor portion in which a transistor is formed and a diode portion in which a diode is formed.
- the second regions may be discretely provided in the diode section. In a plane parallel to the back surface of the semiconductor substrate, the distance D between the boundary of the transistor portion and the diode portion and the second region may be larger than the distance between the second regions.
- the distance D may be larger than the thickness of the semiconductor substrate.
- the distance D may be larger than the width of the second region.
- FIG. 6 is a view showing an example of impurity concentration distribution in cathode region 24, intermediate region 22, FS region 20 and drift region 18. It is the figure which expanded the impurity concentration distribution of middle region 22 and the 4th peak 26-4 vicinity.
- FIG. 6 is a diagram showing a positional relationship between a concentration concentration peak of the lifetime killer 28 and a peak 26 in the FS region 20.
- FIG. 6 is a view showing measurement results of leakage current of the semiconductor device 100.
- FIG. 16 is a diagram showing temporal waveforms of reverse voltage Vr and reverse current Ir during reverse recovery operation of semiconductor device 100.
- FIG. 7 is a diagram showing an example of a manufacturing process of the semiconductor device 100.
- FIG. 6 is a view showing an example of impurity concentration distribution in cathode region 24, intermediate region 22, FS region 20 and drift region 18. It is the figure which expanded the impurity concentration distribution of middle region 22 and the 4th peak 26-4 vicinity.
- FIG. 6 is a diagram showing a positional relationship between
- FIG. 6 is a cross-sectional view showing another structural example of the semiconductor device 100. It is a figure which shows the cross section of the semiconductor device 200 which concerns on other embodiment. It is a figure which shows the cross section of the semiconductor device 300 concerning other embodiment.
- FIG. 18 is a view showing another example of the cross section of the semiconductor device 300.
- FIG. 12 is a view showing an arrangement example of intermediate regions 22 in a plane parallel to the back surface of semiconductor device 300 shown in FIG. 11. It is a figure which shows the other example of concentration distribution in the depth direction of the lifetime killer.
- FIG. 1 is a view showing a cross section of a semiconductor device 100 according to an embodiment.
- the semiconductor device 100 is a vertical semiconductor device in which electrodes are formed on the front surface and the back surface of the semiconductor substrate 10 and current flows in the depth direction of the semiconductor substrate 10.
- a diode is shown as an example of the semiconductor device 100.
- the diode may function as a free wheel diode (FWD) provided in parallel with a switching element such as an IGBT.
- FWD free wheel diode
- the semiconductor device 100 includes a semiconductor substrate 10, an anode electrode 12 and a cathode electrode 14.
- the anode electrode 12 is provided in contact with the front surface of the semiconductor substrate 10.
- the cathode electrode 14 is provided in contact with the back surface of the semiconductor substrate 10.
- the anode electrode 12 and the cathode electrode 14 are formed of, for example, a metal material containing aluminum.
- the semiconductor substrate 10 is formed of a semiconductor material such as silicon or a compound semiconductor.
- the semiconductor substrate 10 is doped with an impurity of a predetermined concentration.
- impurity refers to a dopant which is doped in a semiconductor material to exhibit n-type or p-type conductivity unless otherwise specified.
- the semiconductor substrate 10 of this example has n-type conductivity.
- the n-type is an example of the second conduction type.
- the p-type is an example of the first conduction type. However, the first conduction type and the second conduction type may be opposite to each other.
- the semiconductor substrate 10 has an anode region 16, a drift region 18, a buffer region (FS region 20), an intermediate region 22 and a cathode region 24.
- the anode region 16 is an example of a first region
- the middle region 22 is an example of a second region.
- the buffer region may function as a field stop layer that suppresses the spread of the depletion layer.
- Drift region 18 has the same conductivity type as semiconductor substrate 10.
- a region in which the anode region 16, the FS region 20, the intermediate region 22 and the cathode region 24 are not formed functions as the drift region 18.
- the anode region 16 is formed on the front surface side of the drift region 18 and electrically connected to the anode electrode 12.
- the anode region 16 is doped with an impurity of a conductivity type different from that of the drift region 18.
- the anode region 16 is p-type.
- the FS region 20 is formed on the back surface side of the drift region 18.
- the FS region 20 has the same conductivity type as the drift region 18, and the impurity is implanted at a higher concentration than the drift region 18.
- the FS area 20 is n-type.
- the impurity implanted into the FS region 20 is referred to as a first impurity.
- the first impurity is, for example, hydrogen or phosphorus.
- Hydrogen combines with vacancies (V) and oxygen (O) in the form of clusters in the semiconductor material to form composite defects (VOH defects). Since this VOH defect serves as a donor, the VOH defect serves as an n-type dopant (impurity). Hydrogen may be introduced into the semiconductor material by implantation of hydrogen ions such as protons or dutrons. Oxygen may be contained in the production of the semiconductor material or may be intentionally introduced into the semiconductor region during the production of the semiconductor device.
- the semiconductor material may be manufactured by a float zone method (FZ method), a Czochralski method (CZ method), a magnetic field application type Czochralski method (MCZ method) or the like.
- the concentration of oxygen in the semiconductor material is 1 ⁇ 10 17 / cm 3 or more and 1 ⁇ 10 18 / cm 3 or less, the dopant by the VOH defect can be suitably formed.
- the holes may be included in the semiconductor material manufacturing or may be intentionally introduced into the semiconductor region during the manufacturing of the semiconductor device.
- the provision of the high concentration FS region 20 can prevent the depletion layer extending from the interface of the anode region 16 from reaching the intermediate region 22 or the cathode region 24.
- the holes may be introduced by ion implantation of, for example, a proton, an electron beam, helium or the like.
- the concentration distribution of the first impurity in the depth direction of the semiconductor substrate 10 has one or more peaks 26 in the FS region 20.
- the semiconductor device 100 illustrated in FIG. 1 has a first peak 26-1, a second peak 26-2, a third peak 26-3 and a fourth peak 26-4.
- the impurity concentration at each peak 26 is higher than the impurity concentration at drift region 18.
- the middle region 22 is formed on the back side of the FS region 20.
- the intermediate region 22 in this example is locally formed in a plane parallel to the back surface of the semiconductor substrate 10.
- Intermediate region 22 has the same conductivity type as anode region 16.
- the intermediate region 22 is p-type.
- the impurity implanted into the intermediate region 22 is referred to as a second impurity.
- the second impurity is, for example, boron.
- the region where the intermediate region 22 is not formed on the back surface side of the FS region 20 is the same conductivity type as the drift region 18.
- the impurity concentration of the region may be substantially the same as the impurity concentration at the end on the back surface side of the FS region 20.
- the cathode region 24 is formed on the back side of the intermediate region 22.
- the cathode region 24 has the same conductivity type as the FS region 20.
- the impurity concentration in the cathode region 24 of this example is higher than the impurity concentration in each of the FS region 20 and the intermediate region 22.
- the cathode region 24 is n + -type.
- the impurity implanted into the cathode region 24 is referred to as a third impurity.
- the third impurity is, for example, phosphorus.
- the cathode region 24 is electrically connected to the cathode electrode 14.
- the reverse recovery operation of the semiconductor device 100 can be soft recovery.
- the semiconductor device 100 of this example is disposed on the back surface side of the semiconductor substrate 10 and has a lifetime killer 28 that shortens the carrier lifetime.
- the lifetime killer 28 is, for example, helium.
- the peak of the concentration distribution in the depth direction of the lifetime killer 28 is the first peak 26-1 on the front surface side of the peaks 26 in the FS region 20 and the back surface of the semiconductor substrate 10 (in this example, the cathode It is disposed between the electrode 14 and the contacting surface). With such a configuration, it is possible to shorten the carrier lifetime in the region contributing to the tail current and to reduce the tail current.
- FIG. 2 is a diagram showing an example of the impurity concentration distribution in the cathode region 24, the intermediate region 22, the FS region 20 and the drift region 18. Further, in FIG. 2, the concentration distribution of the lifetime killer 28 is also shown.
- the impurity concentration distribution in the cathode region 24, the intermediate region 22, the FS region 20, and the drift region 18 indicates a net impurity concentration (net doping concentration) obtained by integrating the concentration of each impurity other than the lifetime killer 28.
- the peak of the impurity concentration of the lifetime killer 28 is the first peak 26-of the impurity concentration peak 26 in the FS region 20 on the most front side (ie, the most drift region 18 side). 1 and the back surface of the semiconductor substrate 10.
- the peak concentration of the first peak 26-1 on the front surface side may be higher than the peak concentration of the second peak 26-2 adjacent to the back surface.
- the peak of the impurity concentration of the lifetime killer 28 is arranged on the front surface side of the semiconductor substrate 10 than the peak 23 of the impurity concentration in the intermediate region 22. Thereby, carrier loss in the intermediate region 22 due to the injection of the lifetime killer 28 can be suppressed.
- the peak of the impurity concentration of the lifetime killer 28 may be disposed between any two peaks 26 of the plurality of peaks 26.
- the impurity concentration peak of the lifetime killer 28 may be disposed between the first peak 26-1 on the front side and the adjacent second peak 26-2, and the backmost side It may be disposed between the fourth peak 26-4 and the adjacent third peak 26-3, and between the two peaks 26 disposed other than the front side or the back side. It may be arranged.
- the peak of the impurity concentration of the lifetime killer 28 may be disposed on the other side of the fourth peak 26-4 on the back surface side among the peaks 26 of the impurity concentration in the FS region 20.
- the peak of the impurity concentration of the lifetime killer 28 By disposing the peak of the impurity concentration of the lifetime killer 28 on the other side of the fourth peak 26-4, the peak of the lifetime killer 28 can be disposed in a region where the depletion layer extending from the anode does not reach. Therefore, the increase of the leakage current due to the injection of the lifetime killer 28 can also be suppressed.
- FIG. 3 is an enlarged view of the impurity concentration distribution in the vicinity of the intermediate region 22 and the fourth peak 26-4.
- the peak of the concentration of the lifetime killer 28 is disposed between the peak 23 of the impurity concentration in the intermediate region 22 and the fourth peak 26-4.
- the depth position of the peak of the impurity concentration in the intermediate region 22 is P1
- the depth position of the fourth peak 26-4 is P2
- the depth position of the concentration peak of the lifetime killer 28 is P3.
- the position of each peak is the position at which the concentration shows the maximum value.
- the distance (P3-P1) between the concentration peak of the lifetime killer 28 and the peak 23 of the impurity concentration in the intermediate region 22 is the peak of the concentration of the lifetime killer 28 and the fourth on the back surface side in the FS region 20. Is preferably larger than the distance (P2-P3) to the peak 26-4 of That is, it is preferable that the concentration peak of the lifetime killer 28 be disposed closer to the fourth peak 26-4 between the peak 23 and the fourth peak 26-4.
- the distance (P3-P1) may be twice or more and three times or more of the distance (P2-P3).
- the peak value D3 of the concentration of the lifetime killer 28 may be lower than the peak value D1 of the concentration in the intermediate region 22. Thus, even when carriers in the intermediate region 22 are partially lost by injecting the lifetime killer 28, the oscillation suppression function of the intermediate region 22 can be exhibited.
- the peak value D3 of the concentration of the lifetime killer 28 may be 80% or less or 50% or less of the peak value D1.
- the peak value D3 of the concentration of the lifetime killer 28 may be higher than the peak value D2 of the fourth peak 26-4 on the back surface side among the peaks 26 of the impurity concentration in the FS region 20. .
- the peak value D3 of the concentration of the lifetime killer 28 may be twice or more, five times or more, or ten times or more of the peak value D2.
- FIG. 4 is a view showing the positional relationship between the concentration peak of the lifetime killer 28 and the peak 26 in the FS region 20. As shown in FIG. It is preferable that the concentration peak of the lifetime killer 28 be located at a position not overlapping any of the impurity concentration peaks 26 in the FS region 20. As a result, it is possible to suppress excessive recovery of defects caused by the lifetime killer 28 due to protons or the like injected into the FS region 20.
- the peaks of concentration do not overlap means that the distance X between peaks is equal to or more than a predetermined value.
- the distance X may be equal to or more than the half width half width Y / 2 of the concentration distribution of the lifetime killer 28, may be equal to or more than the half width full width Y, and may be twice or more the half width full width Y.
- the concentration peak of the lifetime killer 28 does not overlap with the impurity concentration peak 23 of the intermediate region 22.
- the lifetime killer 28 can suppress the loss of carriers in the intermediate region 22.
- the lifetime killer 28 may be injected at a plurality of positions in the depth direction.
- the concentration peak of lifetime killer 28 is located between peak 23 of intermediate region 22 and fourth peak 26-4 in FS region 20 and between any two peaks 26 in FS region 20. May be formed.
- the values of the plurality of concentration peaks of the lifetime killer 28 may be smaller as the distance from the cathode side is larger.
- FIG. 5 is a diagram showing the measurement results of the leakage current of the semiconductor device 100.
- the lifetime killer 28 is injected between the peak 23 of the intermediate region 22 and the fourth peak 26-4 from the most cathode of the FS region 20.
- the horizontal axis indicates the reverse bias voltage Vr
- the vertical axis indicates the leakage current Ir.
- an example in which the lifetime killer 28 is injected is indicated by a solid line
- an example in which the lifetime killer 28 is not injected is indicated by a dotted line.
- FIG. 6 is a diagram showing time waveforms of the reverse voltage Vr and the reverse current Ir at the time of reverse recovery operation of the semiconductor device 100.
- an example in which the lifetime killer 28 is injected is indicated by a solid line, and an example in which the lifetime killer 28 is not injected is indicated by a dotted line.
- the tail current in the reverse current Ir is reduced by injecting the lifetime killer 28. Thereby, the loss at the time of reverse recovery operation can be reduced. In addition, no large voltage and current oscillations occur during reverse recovery operation.
- FIG. 7 is a view showing an example of a manufacturing process of the semiconductor device 100.
- the front structure formation step S700 the structure on the front surface side of the semiconductor device 100 is formed.
- the anode electrode 12 and the anode region 16 are formed.
- the back surface side of the semiconductor substrate 10 is ground to adjust the thickness of the semiconductor substrate 10 according to a predetermined withstand voltage.
- an impurity is injected from the back surface side of the semiconductor substrate 10 to form the cathode region 24.
- the impurity in S702 is phosphorus
- the dose amount is 1 ⁇ 10 15 / cm 2
- the acceleration voltage is 40 keV.
- an impurity is locally implanted from the back surface side of the semiconductor substrate 10 to form an intermediate region 22.
- the impurity in S704 is boron
- the dose amount is 1 ⁇ 10 13 / cm 2
- the acceleration voltage is 240 keV.
- the dose amount of boron may be 3 ⁇ 10 12 / cm 2 or more and 3 ⁇ 10 13 / cm 2 or less.
- the region into which the impurity is implanted from the back surface side of the semiconductor substrate 10 is annealed.
- protons are injected from the back surface side of the semiconductor substrate 10 to form the FS region 20.
- protons are injected four times with different acceleration voltages.
- the dose of proton corresponding to the fourth peak 26-4 is 3.0 ⁇ 10 14 / cm 2
- the acceleration voltage is 400 keV
- the dose of proton corresponding to the third peak 26-3 is 1. 0 ⁇ 10 13 / cm 2
- acceleration voltage is 820 keV
- proton dose corresponding to the second peak 26-2 is 7.0 ⁇ 10 12 / cm 2
- acceleration voltage is 1100 keV
- first peak 26-1 The dose of protons corresponding to is 1.0 ⁇ 10 13 / cm 2 and the acceleration voltage is 1450 keV.
- a first furnace annealing step S710 the semiconductor substrate 10 is annealed in an annealing furnace such as a nitrogen atmosphere.
- the annealing temperature is 370 degrees, and the annealing time is 5 hours.
- a helium injection step S712 helium is injected from the back surface side of the semiconductor substrate 10 to form a lifetime killer 28.
- He 2+ is implanted at a dose of 2 ⁇ 10 12 / cm 2 and an acceleration energy of 700 keV.
- the electron beam is irradiated from the back surface side of the semiconductor substrate 10.
- the electron beam irradiation dose is 160 kGy.
- the semiconductor substrate 10 is annealed in an annealing furnace such as a nitrogen atmosphere.
- the annealing temperature is 360 degrees, and the annealing time is 1 hour.
- the cathode electrode 14 is formed.
- the cathode electrode 14 may be formed by sputtering.
- the cathode electrode 14 may be a laminated electrode in which an aluminum layer, a titanium layer, a nickel layer, and the like are laminated.
- the semiconductor device 100 can be manufactured by such a process.
- FIG. 8 is a cross-sectional view showing another structural example of the semiconductor device 100. As shown in FIG. The semiconductor device 100 in this example is different from the semiconductor device 100 shown in FIG. 1 in the position of the intermediate region 22. The other structure may be identical to that of the semiconductor device 100 shown in FIG.
- the intermediate region 22 in the present example is formed at the same depth position as the cathode region 24.
- the lifetime killer 28 is added between any peak 26 of the FS region 20 and the concentration peak of the intermediate region 22 to form any peak 26 of the FS region 20 and the concentration peak of the cathode region 24. Is also formed between.
- the position in the depth direction of the lifetime killer 28 formed above the intermediate region 22 and the lifetime killer 28 formed above the cathode region 24 may be the same. With such a configuration, it is also possible to reduce the tail current at the time of reverse recovery operation and to suppress the increase of the leakage current.
- FIG. 9 is a view showing a cross section of a semiconductor device 200 according to another embodiment.
- the semiconductor device 200 is an IGBT (Insulated Gate Bipolar Transistor).
- the semiconductor device 200 includes a semiconductor substrate 10, an emitter electrode 112, and a collector electrode 130.
- Emitter electrode 112 is provided in contact with the front surface of semiconductor substrate 10.
- the collector electrode 130 is provided in contact with the back surface of the semiconductor substrate 10.
- Emitter electrode 112 and collector electrode 130 are formed of, for example, a metal material containing aluminum.
- a gate structure 120 is formed on the front surface side of the semiconductor substrate 10. Although the gate structure 120 in this example is a trench type, the gate structure 120 may be a planar type.
- the gate structure 120 has a gate insulating film 122 and a gate electrode 124.
- the gate insulating film 122 is formed to cover the periphery of the gate electrode 124.
- the gate insulating film 122 of this example is formed to cover the inner wall of the gate trench formed on the front surface of the semiconductor substrate 10.
- the gate electrode 124 is formed at a position facing the base region 118 where a channel is to be formed.
- the gate electrode 124 in this example is polysilicon which is formed so as to be covered by the gate insulating film 122 inside the gate trench.
- the gate electrode 124 in this example faces the base region 118 along the depth direction of the semiconductor substrate 10.
- An interlayer insulating film 114 covering the gate structure 120 is formed on the front surface of the semiconductor substrate 10. Thereby, the emitter electrode 112 and the gate structure 120 are isolated.
- an n + -type emitter region 116 and a p-type base region 118 are formed on the front side of the semiconductor substrate 10.
- the base region 118 is an example of a first region.
- the gate structure 120 of this example is formed through the base region 118.
- Emitter region 116 is formed in a region adjacent to gate structure 120.
- Emitter region 116 and base region 118 are in contact with emitter electrode 112 on the front surface of semiconductor substrate 10.
- An n ⁇ -type drift region 126 is formed on the back surface side of the base region 118.
- An FS region 20 is formed on the back surface side of the drift region 126.
- a p + -type collector region 128 is formed on the back surface side of the FS region 20.
- the collector region 128 is an example of a second region.
- the concentration peak of the lifetime killer 28 is the first peak 26-1 on the front surface side of the semiconductor substrate 10 among the peaks 26 of the impurity concentration in the FS region 20 and the back of the semiconductor substrate 10. It is placed between the faces.
- the concentration peak of the lifetime killer 28 is disposed between the fourth peak 26-4 on the back surface side of the semiconductor substrate 10 among the peaks 26 of the impurity concentration in the FS region 20 and the concentration peak of the collector region 128. Is preferred.
- FIG. 10 is a view showing a cross section of a semiconductor device 300 according to another embodiment.
- the semiconductor device 300 is a reverse conducting IGBT (RC-IGBT) in which an IGBT and a reverse recovery diode are formed on the same substrate.
- the semiconductor device 300 includes a semiconductor substrate 10, an emitter electrode 112, and a collector electrode 130.
- a p + -type collector region 128 is formed in the transistor portion 70 which functions as an IGBT, and an n + -type cathode region is formed in the diode portion 80 which functions as a diode. 24 are formed.
- the mesa portion 150 of the transistor portion 70 the region of the semiconductor substrate sandwiched by the trench portions
- the position in contact with the collector region 128 of the cathode region 24 is projected to the front or the closest position.
- the emitter region 116 may not be provided on the front surface of the base region 118, and the p + -type contact region 115 may be formed.
- the structure of the transistor unit 70 is the same as that of the semiconductor device 200 shown in FIG. However, in the present embodiment, a plurality of gate structures 120 are formed in the transistor section 70. In at least one of the plurality of gate structures 120, the gate electrode 124 is electrically connected to the gate terminal. In addition, in at least one of the plurality of gate structures 120, the gate electrode 124 may be electrically connected to the emitter electrode 112 and function as a dummy trench. By providing the dummy trench, a charge injection promoting effect (IE effect) can be generated.
- IE effect charge injection promoting effect
- the structure of the region functioning as a diode is similar to that of the semiconductor device 100 shown in FIG. 1 or FIG.
- the base region 118 shown in FIG. 10 functions as an anode region of the diode.
- the intermediate region 22 is omitted. Similar to the semiconductor device 100 shown in FIG. 1, an intermediate region 22 may be locally formed above the cathode region 24 shown in FIG.
- one or more dummy trench structures 140 are provided on the front surface side of the diode section 80.
- the dummy trench structure 140 has the same structure as the gate structure 120. However, the gate electrode in dummy trench structure 140 is electrically connected to emitter electrode 112.
- the concentration peak of the lifetime killer 28 in the region functioning as a diode is provided at the same position as that of the semiconductor device 100 shown in FIG. 1 or FIG. Further, the concentration peak of the lifetime killer 28 in the transistor portion 70 is provided at the same position as that of the semiconductor device 200 shown in FIG.
- the lifetime killer 28 may be formed at the same depth position in the transistor unit 70 and the diode unit 80.
- FIG. 11 is a view showing another example of the cross section of the semiconductor device 300. As shown in FIG.
- the semiconductor device 300 of this example has an intermediate region 22.
- the structure other than the intermediate region 22 may be the same as that of the semiconductor device 300 shown in FIG.
- a region functioning as a transistor such as an IGBT is referred to as a transistor unit 70, and a region functioning as a diode such as an FWD is referred to as a diode unit 80.
- An emitter region 116 is formed on the front surface of the transistor portion 70, and a collector region 128 is formed on the back surface.
- the emitter region 116 is not formed on the front surface of the diode section 80, the base region 118 is formed, and the cathode region 24 is formed on the back surface.
- the boundary between the collector region 128 and the cathode region 24 is taken as the boundary between the transistor portion 70 and the diode portion 80.
- the position in contact with the collector region 128 of the cathode region 24 is projected onto the front surface or projected.
- the emitter region 116 may not be present on the front surface of the base region 118, and the P + -type contact region 115 may be formed.
- the diode portion 80 is provided with an intermediate region 22.
- the intermediate region 22 may be formed on the cathode region 24 as shown in FIG. 1, or may be formed at the same depth position as the cathode region 24 as shown in FIG.
- Gate structure 120 having a trench structure and dummy trench structure 140 are formed extending in a direction perpendicular to the cross section shown in FIG.
- the direction in which the gate structure 120 and the dummy trench structure 140 extend is the trench longitudinal direction (Y-axis direction in FIG. 11), and the direction orthogonal to the trench longitudinal direction in the front surface of the semiconductor substrate 10 is the trench lateral direction It is assumed that X axis direction in FIG.
- D be the distance between the boundary of the transistor portion 70 and the diode portion 80 and the intermediate region 22 closest to the transistor portion 70 in the trench short direction (X-axis direction) in a plane parallel to the back surface of the semiconductor substrate 10 . That is, the distance between the collector region 128 and the intermediate region 22 in the X-axis direction is D.
- a plurality of intermediate regions 22 are discretely formed in a plane parallel to the back surface of the semiconductor substrate 10.
- the distance between the middle regions 22 in the trench short direction (X-axis direction) is L1
- the width of the middle region 22 is L2.
- the interval L1 and the width L2 of the intermediate regions 22 may use the average value of the plurality of intermediate regions 22 or may use the maximum value.
- the thickness of the semiconductor substrate 10 in the depth direction (the Z-axis direction in FIG. 11) orthogonal to both the trench longitudinal direction and the trench lateral direction is W.
- the distance D between the collector region 128 and the middle region 22 is larger than the distance L1 between the middle regions 22. That is, in the end region of the diode unit 80 adjacent to the transistor unit 70, the density of the intermediate region 22 is smaller than that of the other regions.
- the end region of the diode portion 80 is, by way of example, one or more sandwiching one or more mesa portions 150 in the lateral direction of the trench from the position projected on the front surface of the position contacting the collector region 128 of the cathode region 24. It may be a trench portion. In the vicinity of the boundary between the transistor portion 70 and the diode portion 80, the collector region 128 can function in the same manner as the intermediate region 22 during reverse recovery.
- the boundary between the transistor unit 70 and the diode unit 80 may be, for example, a position where the cathode region 24 is in contact with the collector region 128.
- the intermediate region 22 is not provided in the end region of the diode section 80, the total area of the intermediate region 22 in the XY plane can be reduced. Therefore, the operation of the diode unit 80 can be stabilized, and the forward voltage of the diode unit 80 can be reduced.
- the distance D between the collector region 128 and the intermediate region 22 may be larger than the width L 2 of the intermediate region 22. Further, the distance D between the collector region 128 and the intermediate region 22 may be larger than the thickness W of the semiconductor substrate 10. Thus, even if the intermediate region 22 is disposed, the collector region 128 of the transistor unit 70 is provided, so that the oscillation of the voltage and current at the time of reverse recovery can be suppressed. If the distance D is made larger, the characteristics of the diode unit 80 such as the forward voltage can be further improved.
- FIG. 12 is a view showing an arrangement example of the intermediate region 22 in a plane parallel to the back surface of the semiconductor device 300 shown in FIG.
- the positions of the intermediate region 22, the gate structure 120, the dummy trench structure 140, the cathode region 24, the gate connection portion 160, and the dummy connection portion 170 are shown in an overlapping manner.
- a collector region 128 is formed in a region where the cathode region 24 is not formed on the back surface side of the semiconductor substrate 10.
- gate structure 120 and the dummy trench structure 140 of this example have a U shape, the shapes of the gate structure 120 and the dummy trench structure 140 are not limited thereto.
- Gate structure 120 and dummy trench structure 140 each have straight portions formed extending in the Y-axis direction. A region sandwiched by the straight portions of the gate structure 120 or the dummy trench structure 140 is referred to as a mesa portion 150.
- the gate connection portion 160 is a gate runner connected to the gate electrode 124 of the gate structure 120.
- the dummy connection portion 170 is a dummy runner connected to an electrode in the dummy trench structure 140.
- the gate connection portion 160 and the dummy connection portion 170 in this example are formed of polysilicon or the like.
- the gate connection portion 160 and the dummy connection portion 170 are formed above the front surface of the semiconductor substrate 10.
- An insulating film such as an interlayer insulating film 114 is formed between the gate connection portion 160 and the dummy connection portion 170 and the semiconductor substrate 10.
- Gate connection portion 160 and dummy connection portion 170 are in contact with the front surface of semiconductor substrate 10 through the contact holes formed in interlayer insulating film 114.
- the gate connection portion 160 may be connected to a gate pad formed of a metal material.
- the dummy connection portion 170 may be connected to the emitter electrode 112.
- the gate structure 120 is formed on the front surface side of the transistor section 70, and the collector region 128 is formed on the back surface side.
- one or more linear portions of the dummy trench structure 140 may be alternately formed in the X-axis direction with one or more linear portions of the gate structure 120.
- a dummy trench structure 140 is formed on the front surface side of the diode section 80, and a cathode region 24 and an intermediate region 22 are formed on the back surface side.
- the distance D between the end of the cathode region 24 and the intermediate region 22 in the X-axis direction may be larger than the width L 3 of the mesa 150. That is, in the end region of the diode unit 80 in the X-axis direction, the intermediate region 22 may not be formed below the at least one mesa unit 150. In the end region of the diode unit 80 in the X-axis direction, the intermediate region 22 may not be formed below the plurality of mesa units 150.
- the distance between the end of the cathode region 24 (portion in contact with the collector region 128) and the intermediate region 22 is DY.
- the distance DY may be larger than the interval L4 in the Y-axis direction of the intermediate region 22, larger than the width L5 in the Y-axis direction of the intermediate region 22, and larger than the thickness W of the semiconductor substrate 10.
- the distance DY may be the same as the distance D.
- FIG. 13 is a view showing another example of the concentration distribution in the depth direction of the lifetime killer 28.
- the position P6 of the peak of the lifetime killer 28 is located between the positions P4 and P5 of the two peaks 26-a and 26-b in the FS region 20.
- Position P6 may be centrally located between positions P4 and P5.
- the concentration distribution of the lifetime killer 28 of this example has a relatively broad distribution.
- the semiconductor device 100 can perform a soft recovery operation.
- the influence of the variation can be reduced.
- the full width half maximum FWHM of the concentration distribution of the lifetime killer 28 is 5 ⁇ m or more.
- the full width at half maximum FWHM may be 7 ⁇ m or more, and may be 9 ⁇ m or more.
- the full width half maximum FWHM of the concentration distribution of the lifetime killer 28 is 70% or more with respect to the interval (P4-P5) of the two peaks 26-a and 26-b sandwiching the concentration peak of the lifetime killer 28 May be
- the full width at half maximum FWHM may be 80% or more or 100% or more of the interval (P4-P5) of the peaks 26 of the FS region 20.
- the lifetime killer 28 may be distributed to a position overlapping with the two peaks 26-a and 26-b of the FS region 20.
- the concentration of the lifetime killer 28 may be 1% or more or 10% or more of the peak concentration of the lifetime killer 28 at both the position P4 and the position P5.
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Abstract
Description
特許文献1 米国特許第7842590号明細書
Claims (14)
- 半導体基板と、
前記半導体基板のおもて面側に形成された第1導電型の第1領域と、
前記第1領域よりも前記半導体基板のうら面側に形成された第2導電型のドリフト領域と、
前記ドリフト領域よりも前記半導体基板のうら面側に形成され、前記ドリフト領域の不純物濃度よりも高い不純物濃度のピークを1以上含む、第2導電型のバッファ領域と、
前記半導体基板のうら面側に配置され、キャリアライフタイムを短くするライフタイムキラーと
を備え、
前記ライフタイムキラーの濃度のピークが、前記バッファ領域における不純物濃度のピークのうち最も前記半導体基板のおもて面側のピークと、前記半導体基板のうら面との間に配置された半導体装置。 - 前記バッファ領域における不純物濃度のピークのうち最も前記半導体基板のうら面側のピークと、前記半導体基板のうら面との間に形成された第1導電型の第2領域を更に備え、
前記ライフタイムキラーの濃度のピークが、前記第2領域における不純物濃度のピークよりも前記半導体基板のおもて面側に配置された
請求項1に記載の半導体装置。 - 前記バッファ領域における不純物濃度分布は複数のピークを有し、
前記ライフタイムキラーの濃度のピークが、前記バッファ領域における不純物濃度のピークのうち最も前記半導体基板のうら面側のピークよりも、前記半導体基板のうら面側に配置された
請求項2に記載の半導体装置。 - 前記ライフタイムキラーの濃度のピークと前記第2領域における不純物濃度のピークとの距離が、前記ライフタイムキラーの濃度のピークと前記バッファ領域における不純物濃度のピークのうち最も前記半導体基板のうら面側のピークとの距離よりも大きい
請求項2または3に記載の半導体装置。 - 前記バッファ領域における不純物濃度分布は複数のピークを有し、
前記ライフタイムキラーの濃度のピークが、前記バッファ領域における不純物濃度のいずれか2つのピークの間に配置された
請求項2に記載の半導体装置。 - 前記ライフタイムキラーの濃度のピークが、前記バッファ領域における不純物濃度のピークのいずれにも重ならない位置に配置された
請求項1から5のいずれか一項に記載の半導体装置。 - 前記ライフタイムキラーの濃度のピークは、前記バッファ領域における不純物濃度のピークのうち最も前記半導体基板のうら面側のピークよりも高濃度である
請求項1から6のいずれか一項に記載の半導体装置。 - 前記ライフタイムキラーの濃度のピークは、前記第2領域における濃度のピークよりも低濃度である
請求項2から5のいずれか一項に記載の半導体装置。 - 前記バッファ領域にはプロトンが注入されており、
前記ライフタイムキラーはヘリウムである
請求項1から8のいずれか一項に記載の半導体装置。 - 前記半導体基板の深さ方向における、前記ライフタイムキラーの濃度分布の半値全幅が、5μm以上である
請求項1から9のいずれか一項に記載の半導体装置。 - 前記バッファ領域は、前記ライフタイムキラーの濃度のピークを挟む不純物濃度の2つのピークを有し、
前記ライフタイムキラーの濃度分布の半値全幅が、当該2つのピークの間隔の70%以上である
請求項5に記載の半導体装置。 - 前記半導体基板は、トランジスタが形成されるトランジスタ部と、ダイオードが形成されるダイオード部とを有し、
前記第2領域は、前記ダイオード部において離散的に設けられ、
前記半導体基板のうら面と平行な面において、前記トランジスタ部および前記ダイオード部の境界と、前記第2領域との距離Dが、前記第2領域どうしの間隔より大きい
請求項2から5のいずれか一項に記載の半導体装置。 - 前記距離Dが、前記半導体基板の厚みよりも大きい
請求項12に記載の半導体装置。 - 前記距離Dが、前記第2領域の幅より大きい
請求項12または13に記載の半導体装置。
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Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109659236A (zh) * | 2018-12-17 | 2019-04-19 | 吉林华微电子股份有限公司 | 降低vdmos恢复时间的工艺方法及其vdmos半导体器件 |
CN109755239A (zh) * | 2017-11-06 | 2019-05-14 | 富士电机株式会社 | 半导体装置 |
JP2019080035A (ja) * | 2017-10-26 | 2019-05-23 | 株式会社デンソー | 炭化珪素半導体装置およびその製造方法 |
EP3511987A1 (en) * | 2018-01-11 | 2019-07-17 | Toyota Jidosha Kabushiki Kaisha | Semiconductor apparatus |
JP2019161125A (ja) * | 2018-03-15 | 2019-09-19 | 富士電機株式会社 | 半導体装置 |
WO2019176810A1 (ja) * | 2018-03-15 | 2019-09-19 | 富士電機株式会社 | 半導体装置 |
JP2019161126A (ja) * | 2018-03-15 | 2019-09-19 | 富士電機株式会社 | 半導体装置 |
WO2019181852A1 (ja) * | 2018-03-19 | 2019-09-26 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
WO2020100997A1 (ja) * | 2018-11-16 | 2020-05-22 | 富士電機株式会社 | 半導体装置および製造方法 |
WO2020100995A1 (ja) * | 2018-11-16 | 2020-05-22 | 富士電機株式会社 | 半導体装置および製造方法 |
WO2020138218A1 (ja) * | 2018-12-28 | 2020-07-02 | 富士電機株式会社 | 半導体装置および製造方法 |
JP2021028930A (ja) * | 2019-08-09 | 2021-02-25 | 富士電機株式会社 | 半導体装置 |
WO2021125140A1 (ja) * | 2019-12-17 | 2021-06-24 | 富士電機株式会社 | 半導体装置 |
WO2021145397A1 (ja) * | 2020-01-17 | 2021-07-22 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
WO2022230216A1 (ja) * | 2021-04-27 | 2022-11-03 | 株式会社デンソー | 半導体装置 |
WO2022265061A1 (ja) * | 2021-06-17 | 2022-12-22 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
DE112021004531T5 (de) | 2021-01-22 | 2023-06-15 | Hitachi Power Semiconductor Device, Ltd. | Verfahren zum herstellen einer halbleitervorrichtung, halbleitervorrichtung, halbleitermodul und leistungswandlervorrichtung |
US11901419B2 (en) | 2019-10-11 | 2024-02-13 | Fuji Electric Co., Ltd. | Semiconductor device and manufacturing method of semiconductor device |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108292605B (zh) * | 2016-06-24 | 2021-08-27 | 富士电机株式会社 | 半导体装置的制造方法和半导体装置 |
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JP6777245B2 (ja) * | 2017-11-16 | 2020-10-28 | 富士電機株式会社 | 半導体装置 |
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EP3842574B1 (en) * | 2019-04-26 | 2024-03-27 | Fuji Electric Co., Ltd. | Semiconductor device and manufacturing method |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014156849A1 (ja) * | 2013-03-25 | 2014-10-02 | 富士電機株式会社 | 半導体装置 |
JP2015211149A (ja) * | 2014-04-28 | 2015-11-24 | トヨタ自動車株式会社 | 半導体装置及び半導体装置の製造方法 |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08125200A (ja) * | 1994-10-25 | 1996-05-17 | Mitsubishi Electric Corp | 半導体装置及びその製造方法 |
DE10361136B4 (de) * | 2003-12-23 | 2005-10-27 | Infineon Technologies Ag | Halbleiterdiode und IGBT |
DE102004039208B4 (de) | 2004-08-12 | 2014-01-16 | Infineon Technologies Ag | Verfahren zur Herstellung eines Leistungsbauelements mit einer vergrabenen n-dotierten Halbleiterzone und Leistungsbauelement |
JP4843253B2 (ja) * | 2005-05-23 | 2011-12-21 | 株式会社東芝 | 電力用半導体装置 |
JP5374883B2 (ja) * | 2008-02-08 | 2013-12-25 | 富士電機株式会社 | 半導体装置およびその製造方法 |
US7842590B2 (en) | 2008-04-28 | 2010-11-30 | Infineon Technologies Austria Ag | Method for manufacturing a semiconductor substrate including laser annealing |
JP2011086883A (ja) * | 2009-10-19 | 2011-04-28 | Denso Corp | 絶縁ゲートバイポーラトランジスタおよびその設計方法 |
KR101794182B1 (ko) * | 2009-11-02 | 2017-11-06 | 후지 덴키 가부시키가이샤 | 반도체 장치 및 반도체 장치의 제조 방법 |
CN102208454B (zh) * | 2010-03-31 | 2013-03-13 | 比亚迪股份有限公司 | 快速恢复二极管 |
JP5605073B2 (ja) * | 2010-08-17 | 2014-10-15 | 株式会社デンソー | 半導体装置 |
JP2012256628A (ja) * | 2011-06-07 | 2012-12-27 | Renesas Electronics Corp | Igbtおよびダイオード |
JP2013074181A (ja) * | 2011-09-28 | 2013-04-22 | Toyota Motor Corp | 半導体装置とその製造方法 |
WO2013073623A1 (ja) * | 2011-11-15 | 2013-05-23 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
WO2013100155A1 (ja) * | 2011-12-28 | 2013-07-04 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
CN103999225B (zh) * | 2012-01-19 | 2017-02-22 | 富士电机株式会社 | 半导体装置及其制造方法 |
CN104054159B (zh) * | 2012-03-19 | 2017-06-30 | 富士电机株式会社 | 半导体装置的制造方法 |
CN104145326B (zh) * | 2012-03-30 | 2017-11-17 | 富士电机株式会社 | 半导体装置的制造方法 |
US20150318385A1 (en) * | 2012-12-05 | 2015-11-05 | Toyota Jidosha Kabushiki Kaisha | Semiconductor device |
US9627517B2 (en) | 2013-02-07 | 2017-04-18 | Infineon Technologies Ag | Bipolar semiconductor switch and a manufacturing method therefor |
JP6037012B2 (ja) * | 2013-06-26 | 2016-11-30 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
CN103594503A (zh) * | 2013-11-19 | 2014-02-19 | 西安永电电气有限责任公司 | 具有浮结结构的igbt |
JP2015153784A (ja) * | 2014-02-10 | 2015-08-24 | トヨタ自動車株式会社 | 半導体装置の製造方法及び半導体装置 |
DE112015000206T5 (de) * | 2014-10-03 | 2016-08-25 | Fuji Electric Co., Ltd. | Halbleitervorrichtung und Verfahren zum Herstellen einer Halbleitervorrichtung |
JP2016162807A (ja) * | 2015-02-27 | 2016-09-05 | トヨタ自動車株式会社 | 半導体装置とその製造方法 |
WO2017047285A1 (ja) * | 2015-09-16 | 2017-03-23 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
US10637658B2 (en) | 2017-01-25 | 2020-04-28 | Salesforce.Com, Inc. | Secure internal user authentication leveraging public key cryptography and key splitting |
-
2017
- 2017-02-23 WO PCT/JP2017/006830 patent/WO2017146148A1/ja active Application Filing
- 2017-02-23 JP JP2018501760A patent/JP6610768B2/ja active Active
- 2017-02-23 CN CN201780002628.7A patent/CN107851584B/zh active Active
- 2017-02-23 DE DE112017000064.5T patent/DE112017000064T5/de active Pending
-
2018
- 2018-01-24 US US15/879,417 patent/US10734230B2/en active Active
-
2020
- 2020-07-20 US US16/933,993 patent/US11183388B2/en active Active
-
2021
- 2021-11-18 US US17/455,664 patent/US11569092B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014156849A1 (ja) * | 2013-03-25 | 2014-10-02 | 富士電機株式会社 | 半導体装置 |
JP2015211149A (ja) * | 2014-04-28 | 2015-11-24 | トヨタ自動車株式会社 | 半導体装置及び半導体装置の製造方法 |
Cited By (66)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7102948B2 (ja) | 2017-10-26 | 2022-07-20 | 株式会社デンソー | 炭化珪素半導体装置およびその製造方法 |
JP2019080035A (ja) * | 2017-10-26 | 2019-05-23 | 株式会社デンソー | 炭化珪素半導体装置およびその製造方法 |
CN109755239A (zh) * | 2017-11-06 | 2019-05-14 | 富士电机株式会社 | 半导体装置 |
JP2019087623A (ja) * | 2017-11-06 | 2019-06-06 | 富士電機株式会社 | 半導体装置 |
CN109755239B (zh) * | 2017-11-06 | 2023-10-03 | 富士电机株式会社 | 半导体装置 |
JP7069646B2 (ja) | 2017-11-06 | 2022-05-18 | 富士電機株式会社 | 半導体装置 |
US10700054B2 (en) | 2018-01-11 | 2020-06-30 | Denso Corporation | Semiconductor apparatus |
JP2019125597A (ja) * | 2018-01-11 | 2019-07-25 | トヨタ自動車株式会社 | 半導体装置 |
JP7151084B2 (ja) | 2018-01-11 | 2022-10-12 | 株式会社デンソー | 半導体装置 |
KR102131288B1 (ko) * | 2018-01-11 | 2020-07-07 | 도요타 지도샤(주) | 반도체 장치 |
EP3511987A1 (en) * | 2018-01-11 | 2019-07-17 | Toyota Jidosha Kabushiki Kaisha | Semiconductor apparatus |
KR20190085857A (ko) * | 2018-01-11 | 2019-07-19 | 도요타 지도샤(주) | 반도체 장치 |
US12087765B2 (en) | 2018-03-15 | 2024-09-10 | Fuji Electric Co., Ltd. | Semiconductor device |
JP2019161125A (ja) * | 2018-03-15 | 2019-09-19 | 富士電機株式会社 | 半導体装置 |
CN111066149A (zh) * | 2018-03-15 | 2020-04-24 | 富士电机株式会社 | 半导体装置 |
JP7102808B2 (ja) | 2018-03-15 | 2022-07-20 | 富士電機株式会社 | 半導体装置 |
CN111066149B (zh) * | 2018-03-15 | 2024-02-06 | 富士电机株式会社 | 半导体装置 |
JP2019161126A (ja) * | 2018-03-15 | 2019-09-19 | 富士電機株式会社 | 半導体装置 |
JPWO2019176810A1 (ja) * | 2018-03-15 | 2020-09-24 | 富士電機株式会社 | 半導体装置 |
WO2019176810A1 (ja) * | 2018-03-15 | 2019-09-19 | 富士電機株式会社 | 半導体装置 |
US11476249B2 (en) | 2018-03-15 | 2022-10-18 | Fuji Electric Co., Ltd. | Semiconductor device |
JP7187787B2 (ja) | 2018-03-15 | 2022-12-13 | 富士電機株式会社 | 半導体装置 |
US20240047535A1 (en) * | 2018-03-19 | 2024-02-08 | Fuji Electric Co., Ltd. | Semiconductor device and semiconductor device manufacturing method |
JP2021073733A (ja) * | 2018-03-19 | 2021-05-13 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
US11824095B2 (en) | 2018-03-19 | 2023-11-21 | Fuji Electric Co., Ltd. | Semiconductor device and semiconductor device manufacturing method |
CN111095569B (zh) * | 2018-03-19 | 2023-11-28 | 富士电机株式会社 | 半导体装置及半导体装置的制造方法 |
JPWO2019181852A1 (ja) * | 2018-03-19 | 2020-10-01 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
CN111095569A (zh) * | 2018-03-19 | 2020-05-01 | 富士电机株式会社 | 半导体装置及半导体装置的制造方法 |
WO2019181852A1 (ja) * | 2018-03-19 | 2019-09-26 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
US11239324B2 (en) | 2018-03-19 | 2022-02-01 | Fuji Electric Co., Ltd. | Semiconductor device and semiconductor device manufacturing method |
JP7024896B2 (ja) | 2018-03-19 | 2022-02-24 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
JP7078133B2 (ja) | 2018-11-16 | 2022-05-31 | 富士電機株式会社 | 半導体装置および製造方法 |
JP7400874B2 (ja) | 2018-11-16 | 2023-12-19 | 富士電機株式会社 | 半導体装置および製造方法 |
US11373869B2 (en) | 2018-11-16 | 2022-06-28 | Fuji Electric Co., Ltd. | Semiconductor device and fabrication method |
JP2022097741A (ja) * | 2018-11-16 | 2022-06-30 | 富士電機株式会社 | 半導体装置および製造方法 |
JP7099541B2 (ja) | 2018-11-16 | 2022-07-12 | 富士電機株式会社 | 半導体装置および製造方法 |
DE112019001738B4 (de) | 2018-11-16 | 2024-10-10 | Fuji Electric Co., Ltd. | Halbleitervorrichtung und herstellungsverfahren |
WO2020100997A1 (ja) * | 2018-11-16 | 2020-05-22 | 富士電機株式会社 | 半導体装置および製造方法 |
US12015058B2 (en) | 2018-11-16 | 2024-06-18 | Fuji Electric Co., Ltd. | Semiconductor device |
JP7351380B2 (ja) | 2018-11-16 | 2023-09-27 | 富士電機株式会社 | 半導体装置 |
JPWO2020100995A1 (ja) * | 2018-11-16 | 2021-05-20 | 富士電機株式会社 | 半導体装置および製造方法 |
JP2022126855A (ja) * | 2018-11-16 | 2022-08-30 | 富士電機株式会社 | 半導体装置 |
WO2020100995A1 (ja) * | 2018-11-16 | 2020-05-22 | 富士電機株式会社 | 半導体装置および製造方法 |
US11854782B2 (en) | 2018-11-16 | 2023-12-26 | Fuji Electric Co., Ltd. | Semiconductor device and fabrication method |
US11715771B2 (en) | 2018-11-16 | 2023-08-01 | Fuji Electric Co., Ltd. | Semiconductor device and manufacturing method |
JPWO2020100997A1 (ja) * | 2018-11-16 | 2021-05-13 | 富士電機株式会社 | 半導体装置および製造方法 |
CN109659236A (zh) * | 2018-12-17 | 2019-04-19 | 吉林华微电子股份有限公司 | 降低vdmos恢复时间的工艺方法及其vdmos半导体器件 |
CN109659236B (zh) * | 2018-12-17 | 2022-08-09 | 吉林华微电子股份有限公司 | 降低vdmos恢复时间的工艺方法及其vdmos半导体器件 |
JP2022126856A (ja) * | 2018-12-28 | 2022-08-30 | 富士電機株式会社 | 半導体装置 |
WO2020138218A1 (ja) * | 2018-12-28 | 2020-07-02 | 富士電機株式会社 | 半導体装置および製造方法 |
JP7099550B2 (ja) | 2018-12-28 | 2022-07-12 | 富士電機株式会社 | 半導体装置および製造方法 |
JP7563425B2 (ja) | 2018-12-28 | 2024-10-08 | 富士電機株式会社 | 半導体装置 |
JPWO2020138218A1 (ja) * | 2018-12-28 | 2021-06-10 | 富士電機株式会社 | 半導体装置および製造方法 |
US11972950B2 (en) | 2018-12-28 | 2024-04-30 | Fuji Electric Co., Ltd. | Semiconductor device and method for manufacturing |
JP2021028930A (ja) * | 2019-08-09 | 2021-02-25 | 富士電機株式会社 | 半導体装置 |
JP7404702B2 (ja) | 2019-08-09 | 2023-12-26 | 富士電機株式会社 | 半導体装置 |
US11901419B2 (en) | 2019-10-11 | 2024-02-13 | Fuji Electric Co., Ltd. | Semiconductor device and manufacturing method of semiconductor device |
WO2021125140A1 (ja) * | 2019-12-17 | 2021-06-24 | 富士電機株式会社 | 半導体装置 |
US12051591B2 (en) | 2019-12-17 | 2024-07-30 | Fuji Electric Co., Ltd. | Semiconductor device |
JPWO2021125140A1 (ja) * | 2019-12-17 | 2021-12-16 | 富士電機株式会社 | 半導体装置 |
WO2021145397A1 (ja) * | 2020-01-17 | 2021-07-22 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
JPWO2021145397A1 (ja) * | 2020-01-17 | 2021-07-22 | ||
JP7231066B2 (ja) | 2020-01-17 | 2023-03-01 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
DE112021004531T5 (de) | 2021-01-22 | 2023-06-15 | Hitachi Power Semiconductor Device, Ltd. | Verfahren zum herstellen einer halbleitervorrichtung, halbleitervorrichtung, halbleitermodul und leistungswandlervorrichtung |
WO2022230216A1 (ja) * | 2021-04-27 | 2022-11-03 | 株式会社デンソー | 半導体装置 |
WO2022265061A1 (ja) * | 2021-06-17 | 2022-12-22 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
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DE112017000064T5 (de) | 2018-03-29 |
US20220076956A1 (en) | 2022-03-10 |
US20180166279A1 (en) | 2018-06-14 |
JP6610768B2 (ja) | 2019-11-27 |
US10734230B2 (en) | 2020-08-04 |
JPWO2017146148A1 (ja) | 2018-06-07 |
US20200350170A1 (en) | 2020-11-05 |
CN107851584A (zh) | 2018-03-27 |
CN107851584B (zh) | 2021-06-11 |
US11569092B2 (en) | 2023-01-31 |
US11183388B2 (en) | 2021-11-23 |
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