WO2016113841A1 - 半導体装置、その製造方法および半導体モジュール - Google Patents
半導体装置、その製造方法および半導体モジュール Download PDFInfo
- Publication number
- WO2016113841A1 WO2016113841A1 PCT/JP2015/050641 JP2015050641W WO2016113841A1 WO 2016113841 A1 WO2016113841 A1 WO 2016113841A1 JP 2015050641 W JP2015050641 W JP 2015050641W WO 2016113841 A1 WO2016113841 A1 WO 2016113841A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- semiconductor device
- layer
- semiconductor substrate
- region
- diffusion layer
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 243
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 109
- 238000009792 diffusion process Methods 0.000 claims abstract description 84
- 229910052751 metal Inorganic materials 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 30
- 239000012535 impurity Substances 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 20
- 238000011084 recovery Methods 0.000 claims description 18
- 238000005224 laser annealing Methods 0.000 claims description 10
- 230000004913 activation Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 26
- 230000003071 parasitic effect Effects 0.000 abstract description 20
- 230000002265 prevention Effects 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 175
- 238000005516 engineering process Methods 0.000 description 11
- 230000015556 catabolic process Effects 0.000 description 10
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 230000003405 preventing effect Effects 0.000 description 9
- 230000001939 inductive effect Effects 0.000 description 8
- 230000005684 electric field Effects 0.000 description 6
- 230000001976 improved effect Effects 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- 239000002344 surface layer Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/06—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
- H01L27/0611—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration integrated circuits having a two-dimensional layout of components without a common active region
- H01L27/0641—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration integrated circuits having a two-dimensional layout of components without a common active region without components of the field effect type
- H01L27/0647—Bipolar transistors in combination with diodes, or capacitors, or resistors, e.g. vertical bipolar transistor and bipolar lateral transistor and resistor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8222—Bipolar technology
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/06—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
- H01L27/0611—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration integrated circuits having a two-dimensional layout of components without a common active region
- H01L27/0617—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration integrated circuits having a two-dimensional layout of components without a common active region comprising components of the field-effect type
- H01L27/0623—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration integrated circuits having a two-dimensional layout of components without a common active region comprising components of the field-effect type in combination with bipolar transistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/06—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
- H01L27/07—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration the components having an active region in common
- H01L27/0705—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration the components having an active region in common comprising components of the field effect type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0603—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
- H01L29/0607—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration
- H01L29/0638—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for preventing surface leakage due to surface inversion layer, e.g. with channel stopper
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0603—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
- H01L29/0642—Isolation within the component, i.e. internal isolation
- H01L29/0646—PN junctions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66234—Bipolar junction transistors [BJT]
- H01L29/66325—Bipolar junction transistors [BJT] controlled by field-effect, e.g. insulated gate bipolar transistors [IGBT]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66234—Bipolar junction transistors [BJT]
- H01L29/66325—Bipolar junction transistors [BJT] controlled by field-effect, e.g. insulated gate bipolar transistors [IGBT]
- H01L29/66333—Vertical insulated gate bipolar transistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66234—Bipolar junction transistors [BJT]
- H01L29/66325—Bipolar junction transistors [BJT] controlled by field-effect, e.g. insulated gate bipolar transistors [IGBT]
- H01L29/66333—Vertical insulated gate bipolar transistors
- H01L29/66348—Vertical insulated gate bipolar transistors with a recessed gate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/70—Bipolar devices
- H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
- H01L29/739—Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field-effect, e.g. bipolar static induction transistors [BSIT]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/70—Bipolar devices
- H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
- H01L29/739—Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field-effect, e.g. bipolar static induction transistors [BSIT]
- H01L29/7393—Insulated gate bipolar mode transistors, i.e. IGBT; IGT; COMFET
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/70—Bipolar devices
- H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
- H01L29/739—Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field-effect, e.g. bipolar static induction transistors [BSIT]
- H01L29/7393—Insulated gate bipolar mode transistors, i.e. IGBT; IGT; COMFET
- H01L29/7395—Vertical transistors, e.g. vertical IGBT
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/70—Bipolar devices
- H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
- H01L29/739—Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field-effect, e.g. bipolar static induction transistors [BSIT]
- H01L29/7393—Insulated gate bipolar mode transistors, i.e. IGBT; IGT; COMFET
- H01L29/7395—Vertical transistors, e.g. vertical IGBT
- H01L29/7396—Vertical transistors, e.g. vertical IGBT with a non planar surface, e.g. with a non planar gate or with a trench or recess or pillar in the surface of the emitter, base or collector region for improving current density or short circuiting the emitter and base regions
- H01L29/7397—Vertical transistors, e.g. vertical IGBT with a non planar surface, e.g. with a non planar gate or with a trench or recess or pillar in the surface of the emitter, base or collector region for improving current density or short circuiting the emitter and base regions and a gate structure lying on a slanted or vertical surface or formed in a groove, e.g. trench gate IGBT
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/70—Bipolar devices
- H01L29/74—Thyristor-type devices, e.g. having four-zone regenerative action
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/06—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
- H01L27/07—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration the components having an active region in common
- H01L27/0705—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration the components having an active region in common comprising components of the field effect type
- H01L27/0727—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration the components having an active region in common comprising components of the field effect type in combination with diodes, or capacitors or resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/08—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind
- H01L27/085—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only
- H01L27/088—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
- H01L27/092—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate complementary MIS field-effect transistors
- H01L27/0922—Combination of complementary transistors having a different structure, e.g. stacked CMOS, high-voltage and low-voltage CMOS
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/08—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/083—Anode or cathode regions of thyristors or gated bipolar-mode devices
- H01L29/0834—Anode regions of thyristors or gated bipolar-mode devices, e.g. supplementary regions surrounding anode regions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/70—Bipolar devices
- H01L29/74—Thyristor-type devices, e.g. having four-zone regenerative action
- H01L29/7404—Thyristor-type devices, e.g. having four-zone regenerative action structurally associated with at least one other device
Definitions
- the present invention relates to a semiconductor device, a manufacturing method thereof, and a semiconductor module, for example, a semiconductor device including an insulated gate bipolar transistor employed in an ignition system for an internal combustion engine such as an automobile engine.
- an insulated gate bipolar transistor (hereinafter also referred to as IGBT) is used as a power semiconductor device for driving an inductive load (transformer coil).
- the IGBT In the ignition system for internal combustion engines, there is a problem that the IGBT is destroyed due to power loss when an abnormal high voltage surge occurs in the automobile battery. Since the automobile battery is connected to the output (collector) terminal of the IGBT via an inductive load (transformer coil), a semiconductor circuit that detects the collector voltage (equivalent to the battery voltage) of the IGBT as a means for preventing the destruction of the IGBT. Is used to stop the operation of the IGBT during abnormal voltage.
- Patent Document 1 discloses a semiconductor device having an IGBT and a thyristor on the same semiconductor substrate.
- the present invention has been made to solve the above-described problems.
- a semiconductor device having an IGBT, a thyristor element, and a circuit region in the same semiconductor substrate the semiconductor device can be downsized and the manufacturing period can be shortened.
- a semiconductor device includes an insulated gate bipolar transistor formed on a first main surface side of a semiconductor substrate having a first conductivity type drift layer, and a thyristor element formed on the first main surface side of the semiconductor substrate.
- An effective area of the insulated gate bipolar transistor is less than or equal to the effective area of the thyristor element in plan view. is there.
- the IGBT function is specialized to drive the thyristor element.
- the current-carrying capacity required for the IGBT can be reduced to several milliamperes. That is, since the amount of hole current injection from the second conductivity type diffusion layer can be greatly suppressed, there is no need to provide a buffer layer on the semiconductor substrate. Thereby, the manufacturing period of the semiconductor substrate can be shortened.
- FIG. 1 is a cross-sectional view of a semiconductor device according to a first embodiment.
- 1 is a plan view of a semiconductor device according to a first embodiment.
- FIG. 6 is a cross-sectional view of a semiconductor device according to a second embodiment.
- FIG. 10 is a diagram showing a manufacturing process of the semiconductor device according to the second embodiment.
- FIG. 6 is a cross-sectional view of a semiconductor device according to a fifth embodiment.
- FIG. 10 is a sectional view of a semiconductor device according to a sixth embodiment.
- FIG. 10 is a sectional view of a semiconductor device according to a seventh embodiment.
- FIG. 10 is a cross-sectional view of a semiconductor device according to an eighth embodiment.
- FIG. 10 is a cross-sectional view of a semiconductor device according to a ninth embodiment.
- FIG. 16 is a cross-sectional view of a semiconductor device according to a tenth embodiment.
- FIG. 38 is a cross-sectional view of a semiconductor device according to an eleventh embodiment.
- FIG. 38 is a plan view of a semiconductor device according to an eleventh embodiment.
- FIG. 38 is a plan view of a semiconductor device according to a thirteenth embodiment. It is sectional drawing of the semiconductor device which concerns on a premise technique. It is a top view of the semiconductor device concerning a base technology.
- 14 and 15 are a sectional view and a plan view of a semiconductor device as a premise of the present invention.
- an IGBT 15, a thyristor element 17, a circuit region 24, and a hole current recovery region 16 are formed in the same semiconductor substrate.
- a Pch MOSFET 18 and an Nch MOSFET 19 are formed in the circuit region 24 in the circuit region 24 in the circuit region 24, a Pch MOSFET 18 and an Nch MOSFET 19 are formed.
- the Pch MOSFET 18 includes a parasitic element (thyristor) including a P + collector layer 2, an N ⁇ drift layer 4 (N + buffer layer 3), a p ⁇ diffusion layer 5 and an n diffusion layer (n + diffusion layer). Structure) occurs. Similarly, a parasitic element including the P + collector layer 2, the N ⁇ drift layer 4 (N + buffer layer 3), the p ⁇ diffusion layer 5, and the n diffusion layer 8 (n + diffusion layer) is also generated in the Nch MOSFET 19.
- a parasitic element including the P + collector layer 2, the N ⁇ drift layer 4 (N + buffer layer 3), the p ⁇ diffusion layer 5, and the n diffusion layer 8 (n + diffusion layer) is also generated in the Nch MOSFET 19.
- a hole current recovery region 16 is provided between the IGBT 15 and the circuit region 24 to recover the hole current, as shown in FIG.
- the IGBT 15 had to secure a current capacity of several amperes in order to drive the inductive load. Therefore, as shown in FIG. 15, more than half of the chip area is occupied by the IGBT 15.
- a punch-through structure (hereinafter referred to as PT structure) is formed using an epitaxial wafer having a high-concentration and thick N + buffer layer 3 on a semiconductor substrate, or the IGBT 15 and the circuit region 24 are separated by a certain distance or more. It is necessary to take measures such as providing a hole current recovery region 16 in the device. As a result, there is a problem that it is difficult to downsize the semiconductor device and shorten the manufacturing period.
- ⁇ Embodiment 1> 1 and 2 are a cross-sectional view and a plan view of the semiconductor device 100 according to the first embodiment.
- an IGBT 15, a thyristor element 17, a circuit region 24, and a hole current recovery region 16 are formed on the first main surface side of the same semiconductor substrate.
- a Pch MOSFET 18 and an Nch MOSFET 19 are formed in the circuit region 24 .
- the semiconductor substrate of the semiconductor device 100 according to the first embodiment includes the first conductivity type (ie, N type) drift layer (ie, the N ⁇ drift layer 4).
- a second conductivity type (ie, P-type) diffusion layer (ie, P + collector layer 2) is formed on the second main surface (ie, back surface) side of the semiconductor substrate.
- the second main surface of the semiconductor substrate is covered with the metal layer 1.
- the IGBT 15 is configured as follows.
- a p diffusion region is formed on the first main surface (ie, upper surface) side of the N ⁇ drift layer 4. Further, n + diffusion regions are formed in two places in the p diffusion region.
- a gate 13 is formed on the p diffusion region and the n + diffusion region via the oxide film 10.
- a metal electrode 14 serving as an emitter is formed on the p diffusion region and the n + diffusion region. The metal electrode 14 and the gate 13 are insulated by the insulating film 12.
- the thyristor element 17 is configured as follows. A p diffusion region is formed on the first main surface (ie, upper surface) side of the N ⁇ drift layer 4 made of an n-type semiconductor substrate. Further, an n + diffusion region 9 and a p + diffusion region are formed in the p diffusion region. A metal electrode 14 is formed on each of the n + diffusion region 9 and the p + diffusion region.
- the Pch MOSFET 18 formed in the circuit region 24 is configured as follows.
- a p-diffusion layer 5 common to the Nch MOSFET 19 is formed on the first main surface side of the N-drift layer 4.
- the n diffusion layer 8 is formed in the region corresponding to the Pch MOSFET 18 of the p ⁇ diffusion layer 5.
- an n + region, a p + region, and a p + region are sequentially provided at intervals.
- a gate is provided between the two p + regions via an oxide film.
- An electrode corresponding to the drain is provided on the n + region. Electrodes corresponding to the drain or source are provided on the two p + regions, respectively.
- the Nch MOSFET 19 formed in the circuit region 24 is configured as follows.
- a p-diffusion layer 5 common to the Pch MOSFET 18 is formed on the first main surface side of the N-drift layer 4. Further, in the p ⁇ diffusion layer 5, a p + region 7, an n + region, and an n + region are provided in order at intervals.
- a gate is provided between the two n + regions via an oxide film.
- An electrode corresponding to the drain is provided on the p + region 7. Electrodes corresponding to the drain or source are provided on the two n + regions, respectively.
- the IGBT 15 and the thyristor element 17 are arranged adjacent to each other via the hole current recovery region 16.
- the effective area of the IGBT 15 is less than or equal to the effective area of the thyristor element 17.
- the IGBT 15 has a current-carrying capacity that at least drives the thyristor element 17.
- a hole current recovery region 16 is provided between the circuit region 24 and the IGBT 15.
- the effective area of the IGBT 15 and the thyristor element 17 is an area of an element active region responsible for the operation of the vertical switching element.
- the effective area of the IGBT 15 corresponds to the area of the region 15A where the p-well (p diffusion region) is exposed on the substrate surface.
- the effective area of the thyristor element 17 corresponds to the area of the region 17A where the p-well (p diffusion region) is exposed on the substrate surface.
- the function of driving the inductive load of the IGBT 15 in the base technology is eliminated, and the driving of the thyristor element 17 is specialized.
- the IGBT 15 is configured so that an effective area necessary for driving the thyristor element 17 can be secured at a minimum. That is, in the first embodiment, the current-carrying capacity required for the IGBT 15 is reduced from about several amperes to about several milliamperes as compared with the base technology. As the current-carrying capacity of the IGBT 15 decreases, the effective area of the IGBT 15 can also be reduced. If the effective area of the thyristor element 17 is the same in the base technology (FIG. 15) and the first embodiment (FIG. 2), the effective area of the IGBT 15 is reduced from about 1/10 to 1/1000 of the base technology. .
- the semiconductor device 100 includes an insulated gate bipolar transistor 15 formed on the first main surface side of a semiconductor substrate having a first conductivity type (ie, N-type) drift layer (N-drift layer 4).
- a hole current recovery region 16 formed on the first main surface side of the substrate and separating the insulated gate bipolar transistor 15 and the circuit region 24 in plan view, and a second conductivity type formed on the second main surface side of the semiconductor substrate.
- P-type diffusion layer i.e., P + collector layer 2
- the effective area of the insulated gate bipolar transistor 15 is Or less effective area of the capacitor element 17.
- the function of inductive load driving of the IGBT 15 is eliminated, and the driving of the thyristor element 17 is specialized.
- required by IGBT15 can be reduced from about several amperes to about several milliamperes. That is, since the amount of hole injection from the P + collector layer 2 can be greatly suppressed, it is not necessary to provide the N + buffer layer 3 on the semiconductor substrate. Thereby, the manufacturing period of the semiconductor substrate (epitaxial wafer) can be shortened.
- the effective area of the IGBT 15 can be reduced to be equal to or less than the effective area of the thyristor element 17. Furthermore, the distance between the IGBT 15 and the circuit region 24 and the area of the hole current recovery region 16 can be reduced as compared with the premise technology. Therefore, it is possible to reduce the size of the semiconductor device.
- FIG. 3 is a cross-sectional view of the semiconductor device 200 according to the second embodiment.
- the thickness of the P + collector layer 2 is smaller than that of the semiconductor device 100 (FIG. 1). Since other configurations are the same as those of the semiconductor device 100, description thereof is omitted.
- FIG. 4 is a diagram showing a manufacturing process of the semiconductor device 200.
- a wafer in which a second conductivity type (that is, N-type) impurity is introduced into a semiconductor substrate is used.
- a wafer is manufactured by, for example, the FZ method or the MCz method (Magnetic Czochralski method) (FIG. 4A).
- the IGBT 15, the thyristor element 17, the circuit region 24, the hole current recovery region 16 and the like are formed on the first main surface side of the semiconductor substrate (FIG. 4B). Then, the semiconductor substrate is ground to a desired thickness (FIG. 4C).
- trivalent atoms such as boron (B) are implanted into the second main surface of the semiconductor substrate (FIG. 4D). Then, by performing laser annealing on the semiconductor substrate, the implanted impurities are activated to form the P + collector layer 2 (FIG. 4E). Finally, the metal layer 1 is formed on the second main surface of the semiconductor substrate (FIG. 4F).
- the diffusion layer (that is, the P + collector layer 2) is formed by performing laser annealing after implanting impurities into the second main surface side of the semiconductor substrate.
- the N ⁇ drift layer 4 is formed by epitaxial growth on the P + collector layer 2 formed using the Cz method (Czochralski method)
- the P + collector layer 2 is formed by performing laser annealing after implanting P-type impurities into a wafer into which N-type impurities have been introduced. Therefore, in the second embodiment, the manufacturing period of the semiconductor device 200 can be greatly shortened. Further, since the impurity concentration and depth of the P + collector layer 2 can be set by adjusting the impurity implantation conditions and laser annealing conditions, parameter setting is easy and the controllability of the semiconductor device 200 is improved.
- the depth of the P + collector layer 2 can be formed shallow, so that the amount of hole injection from the collector is greatly suppressed, and the effect of preventing the parasitic operation of the circuit region 24 can be enhanced.
- the laser annealing process is not performed, and the metal layer 1 is formed on the second main surface. And in order to ensure the ohmic property of the metal layer 1 and the P ⁇ +> collector layer 2, it heat-processes at 300 to 400 degreeC. By this heat treatment, the impurities are activated and the P + collector layer 2 is formed.
- the activation rate of the introduced impurities exceeds 50% in the laser annealing treatment.
- the activation rate is less than 1% in the heat treatment at 300 ° C. or more and 400 ° C. or less. That is, in the third embodiment, the carrier concentration of the P + collector layer 2 is lower than that in the second embodiment. Therefore, in the third embodiment, the injection of hole current is suppressed, and the effect of preventing the parasitic operation of the circuit region 24 can be further enhanced.
- Semiconductor device 300 according to the third embodiment further includes metal layer 1 that covers the diffusion layer (that is, P + collector layer 2) and is exposed on the second main surface side of the semiconductor substrate, and the diffusion layer and metal layer 1 are ohmic.
- the activation rate of the second conductivity type impurity implanted into the diffusion layer is smaller than 1%.
- the carrier concentration of the P + collector layer 2 is lower than that in the second embodiment. Therefore, in the third embodiment, the injection of hole current is suppressed, and the effect of preventing the parasitic operation of the circuit region 24 can be further enhanced.
- the semiconductor device 300 further includes a metal layer 1 that covers the diffusion layer (that is, the P + collector layer 2) and is exposed on the second main surface side of the semiconductor substrate.
- the manufacturing method of the apparatus 300 includes (c) a step of implanting impurities into the second main surface side of the semiconductor substrate, and (d) after step (c), forming the metal layer 1 on the second main surface side of the semiconductor substrate. And (e) after the step (d), a step of forming a diffusion layer (that is, the P + collector layer 2) by performing a heat treatment on the semiconductor substrate at 300 ° C. or more and 400 ° C. or less.
- the metal layer 1 is formed on the second main surface side of the semiconductor substrate and then heat treatment is performed, so that the activation of the impurity, the semiconductor substrate and the metal are performed.
- the ohmic junction with the layer 1 can be performed simultaneously. Further, by performing heat treatment on the semiconductor substrate at 300 ° C. or higher and 400 ° C. or lower, the activation rate of impurities in the P + collector layer 2 can be less than 1%, and the carrier concentration of the P + collector layer 2 can be reduced. Is possible.
- the thickness of the semiconductor substrate is designed to be thick enough to ensure a current-carrying capacity necessary for driving the thyristor element 17.
- the hole current injection amount from the P + collector layer 2 can be suppressed without impairing the functions of the IGBT 15 and the thyristor element 17, and the parasitic operation prevention effect of the circuit region 24 can be enhanced more than in the second and third embodiments. .
- the thickness of the N-drift layer 4 corresponding to the base region of the vertical PNP transistor of the IGBT 15 is equal to the thickness of the semiconductor substrate.
- the thickness of the substrate can be set to an arbitrary thickness by grinding the back surface of the substrate.
- the thickness of the N-drift layer 4 is set to a minimum thickness in consideration of the trade-off relationship between the switching loss and the element breakdown voltage, the amount of wafer warpage, the chip bending strength, and the like.
- the IGBT 15 is specialized for driving the thyristor element 17, and it is not necessary to consider the switching loss and the element breakdown voltage of the IGBT 15.
- the thickness of the drift layer (that is, the N ⁇ drift layer 4) made of the semiconductor substrate is the upper limit of the thicknesses capable of driving the thyristor element 17.
- the amount of hole current injection from the P + collector layer 2 can be suppressed without impairing the functions of the IGBT 15 and the thyristor element 17, and the parasitic operation prevention effect of the circuit region 24 can be enhanced more than in the second and third embodiments.
- FIG. 5 is a cross-sectional view of the semiconductor device 500 according to the fifth embodiment.
- the N + buffer layer 3 in which the N + buffer layer 3 is provided between the diffusion layer (P + collector layer 2) and the N ⁇ drift layer 4 has a higher impurity concentration than the N ⁇ drift layer 4. Since other configurations are the same as those of the semiconductor device 200 (FIG. 3), description thereof is omitted.
- a method for manufacturing the semiconductor device 500 according to the fifth embodiment will be described.
- pentavalent atoms such as arsenic (As) and phosphorus (P) are implanted into the back surface of the semiconductor substrate, and then trivalent atoms such as boron (B) are implanted into the back surface of the semiconductor substrate.
- an impurity is activated by performing a laser annealing process to form an N + buffer layer 3 in the semiconductor substrate.
- ⁇ Effect> It further includes a buffer layer (ie, N + buffer layer 3) formed between the diffusion layer and the drift layer, having the same conductivity type as the drift layer, and having a carrier concentration higher than that of the drift layer.
- a buffer layer ie, N + buffer layer 3
- the N + buffer layer 3 the amount of hole current injection from the P + collector layer 2 can be further suppressed, and the effect of preventing the parasitic operation of the circuit region 24 can be further enhanced.
- the N + buffer layer 3 since the N + buffer layer 3 is provided, leakage current at high temperature can be reduced, so that the junction temperature of the semiconductor device can be reduced.
- FIG. 6 is a cross-sectional view of the semiconductor device 600 according to the sixth embodiment.
- a diffusion layer that is, the P + collector layer 2
- the P + collector layer 2 is formed in a region that overlaps with the IGBT 15 or the thyristor element 17 in plan view and does not overlap with the circuit region 24 in plan view.
- a step of forming a resist using a photomask on the back surface of the semiconductor substrate is added before implanting trivalent atoms such as boron (B) on the back surface of the semiconductor substrate.
- trivalent atoms such as boron (B)
- B trivalent atoms
- the P + collector layer 2 is formed only in a region where a vertical PNP transistor needs to be formed (that is, a region overlapping with the IGBT 15 and the thyristor element 17 in plan view).
- the diffusion layer (P + collector layer 2) is formed in a region that overlaps with the IGBT 15 or the thyristor element 17 in plan view and does not overlap with the circuit region 24 in plan view.
- the semiconductor device 600 can be configured without forming parasitic elements in the circuit region 24 without impairing the functions of the IGBT 15 and the thyristor element 17. Therefore, the effect of preventing the parasitic operation of the circuit region 24 can be further enhanced as compared with the second and third embodiments.
- the semiconductor device 600 since the distance between the IGBT 15 and the circuit region 24 and the area of the hole current recovery region 16 can be reduced, the semiconductor device 600 can be reduced in size.
- FIG. 7 is a cross-sectional view of the semiconductor device 700 according to the seventh embodiment.
- an N + buffer layer 3 is further provided between the P + collector layer 2 and the N ⁇ drift layer 4 with respect to the semiconductor device 600 (FIG. 6).
- the N + buffer layer 3 is provided so as to overlap with the P + collector layer 2 in plan view.
- the N + buffer layer 3 can be formed by forming a resist on the back surface of the semiconductor substrate and selectively injecting impurities.
- Semiconductor device 700 in the present embodiment further includes a buffer layer (ie, N + buffer layer 3), and the buffer layer is located between the diffusion layer (ie, P + collector layer 2) and drift layer 4 in plan view with the diffusion layer. They are formed to overlap, have the same conductivity type as the drift layer, and have a higher carrier concentration than the drift layer.
- a buffer layer ie, N + buffer layer 3
- the buffer layer is located between the diffusion layer (ie, P + collector layer 2) and drift layer 4 in plan view with the diffusion layer. They are formed to overlap, have the same conductivity type as the drift layer, and have a higher carrier concentration than the drift layer.
- the semiconductor device 700 can be further downsized.
- FIG. 8 is a cross-sectional view of the semiconductor device 800 according to the eighth embodiment.
- the semiconductor device 800 further includes an edge termination region 25 with respect to the semiconductor device 500 of the fifth embodiment.
- the edge termination region 25 is formed so as to surround the IGBT 15, the thyristor element 17, the circuit region 24, and the hall current recovery region 16 in a plan view.
- the withstand voltage of the edge termination region 25 is designed to be smaller than the reverse withstand voltage of the diode 26 formed in the circuit region 24.
- a terminal portion (corner portion) forms a fan-shaped pattern so as to alleviate electric field concentration.
- the depletion layer spreads in a fan shape at the terminal portion, the electric field lines in the fan-shaped region gather in the corner portion, the electric field concentrates, and the voltage is lower than the theoretical breakdown voltage.
- An avalanche breakdown (insulation breakdown) occurs.
- an edge termination region 25 is provided at the terminal portion, and the means of reducing the electric field concentration by dispersing the destination of the electric field lines concentrated on the terminal portion from the device terminal to the edge termination region.
- a spark discharge of several tens of kV is generated in a spark plug connected to the secondary side of the transformer coil by using the mutual induction action of the transformer coil.
- the collector may ignite and an unexpected surge may occur in the collector. Even when a surge of several kV is applied to the collector, it is necessary to design the semiconductor device so as not to break down.
- the semiconductor device 800 further includes an edge termination region 25.
- the edge termination region 25 surrounds the insulated gate bipolar transistor 15, the thyristor element 17, the circuit region 24, and the hole current recovery region 16 in plan view.
- the withstand voltage of the edge termination region 25 is smaller than the reverse withstand voltage of the diode 26 formed in the circuit region 24.
- the withstand voltage of the edge termination region 25 is configured to be smaller than the reverse withstand voltage of the diode 26 formed in the circuit region 24. For this reason, when a positive surge is applied to the P + collector layer 2, an avalanche breakdown occurs in the edge termination region 25 before the vertical punch-through phenomenon occurs, and the surge energy can be absorbed from the termination region. Therefore, the positive surge resistance on the collector side can be improved.
- FIG. 9 is a cross-sectional view of the semiconductor device 900 according to the ninth embodiment.
- the IGBT 15A included in the semiconductor device 800 includes a trench type gate 27.
- Other configurations are the same as those of the semiconductor device 800.
- the IGBT 15A having a trench-type gate structure can improve the current-carrying capacity of the Nch MOSFET portion of the IGBT 15A. Therefore, since the N ⁇ drift layer 4 can be made thicker, the reverse withstand voltage of the diode 26 is improved, and the surge absorption effect of the edge termination region 25 is further enhanced. Therefore, the positive surge resistance on the collector side can be improved as compared with the eighth embodiment.
- the gate 27 of the insulated gate bipolar transistor 15A is a trench type.
- the gate 27 of the IGBT 15A trench type the N ⁇ drift layer 4 of the semiconductor substrate can be made thicker, so that the reverse withstand voltage of the diode 26 formed in the circuit region 24 is improved, and the edge termination region 25 The surge absorption effect is further increased.
- the parasitic NPN transistor composed of the n + layer, the p ⁇ diffusion layer 5 and the N ⁇ drift layer 2 of the Nch MOSFET 19 in the circuit region 24, the potential of the p ⁇ diffusion layer 5 becomes higher than that of the N ⁇ drift layer 2.
- the interval is forward biased. As a result, the parasitic transistor may operate and the circuit may malfunction.
- FIG. 10 is a cross-sectional view of the semiconductor device 1000 according to the tenth embodiment.
- a P-collector layer 28 is provided in a region where a Schottky junction is formed.
- the P ⁇ collector layer 28 has a lower carrier concentration than the P + collector layer 2.
- a diode 29 is formed from the P-collector layer 28 and the N-drift layer 4.
- the P + collector layer 2 and the N ⁇ drift layer 4 constitute a diode 30.
- the semiconductor device 1000 of the tenth embodiment is configured such that the reverse withstand voltage of the diode 29 is smaller than the reverse withstand voltage of the diode 30. For this reason, when a negative bias voltage is applied to the P-collector layer 28, it is possible to suppress a negative current from flowing through the circuit region 24, and to improve the malfunction tolerance of the elements formed in the circuit region 24.
- Semiconductor device 1000 covers the circuit region side diffusion layer (that is, P-collector layer 28), the diffusion layer (P + collector layer 2), and the circuit region side diffusion layer, and the second main surface of the semiconductor substrate.
- the circuit region side diffusion layer is provided adjacent to the metal layer 1 in a region overlapping the circuit region 24 in plan view, and the circuit region side diffusion layer is a diffusion layer.
- the carrier concentration is lower than that of the diffusion layer, and the reverse of the diode 29 formed by the drift layer (ie, the N ⁇ drift layer 4) and the circuit region side diffusion layer
- the withstand voltage is smaller than the reverse withstand voltage of the diode 30 formed by the drift layer and the diffusion layer.
- 11 and 12 are a cross-sectional view and a plan view of the semiconductor device 1100 according to the eleventh embodiment.
- the injection of hole current from the P + collector layer 2 on the back surface of the semiconductor substrate is suppressed, and the parasitic operation preventing effect in the circuit region 24 is enhanced. Accordingly, the conductivity modulation effect in the N-drift layer 4 during operation of the IGBT 15 is reduced, and the resistivity of the N-drift layer 4 is increased. Further, the hole carrier density decreases as the substrate surface layer is reached, and a voltage drop corresponding to the level of the hole current occurs in the N-drift layer 4 on the substrate surface layer, centering on the emitter electrode (p diffusion layer) of the IGBT.
- the voltage level detected by the thyristor element 17 is determined by the potential of the N ⁇ drift layer 4 around the p diffusion portion (base) of the NPN transistor during the IGBT 15 operation. . Therefore, as the distance between the IGBT 15 and the thyristor element 17 is shorter, the difference between the detected voltage level of the thyristor element 17 and the actual collector voltage of the IGBT 15 is affected by the voltage drop generated in the N ⁇ drift layer 4 described above. Will occur. That is, the performance for detecting the collector voltage may be degraded.
- the drive current capability required for the IGBT 15 is several milliamperes. In this case, it has been confirmed that the influence of the voltage drop can be ignored by separating the IGBT 15 and the thyristor element 17 by 100 ⁇ m or more in the device simulation, the sample trial production, and the experiment. However, when the distance is simply taken, the area of the semiconductor device increases.
- the bonding pad region 32 provided in the other region is provided in a region where the IGBT 15 and the thyristor element 17 are separated from each other.
- the bonding pad region 32 is a region for bonding a conductive wiring material such as an aluminum wire to the metal electrode 14.
- a semiconductor device 1100 according to the eleventh embodiment further includes a bonding pad region 32 including a metal electrode 14, and the insulated gate bipolar transistor 15 and the thyristor element 17 are disposed at a distance of 100 ⁇ m or more in plan view and separated by 100 ⁇ m or more.
- a bonding pad region 32 is provided in the region.
- the bonding pad region 32 in a region where the IGBT 15 and the thyristor element 17 are separated from each other, an increase in the area of the semiconductor device 1100 can be suppressed, and a decrease in the collector voltage detection performance in the thyristor element 17 can be suppressed. be able to.
- a silicon substrate is used as the semiconductor substrate.
- a SiC (silicon carbide) semiconductor substrate is used as the semiconductor substrate.
- Silicon carbide has a breakdown electric field strength of about 10 times and a band gap width of about 3 times that of silicon. Therefore, it is possible to reduce the size of the semiconductor device and improve the heat resistance by reducing the thickness of the semiconductor substrate and reducing the edge termination region 25.
- the same effect can be obtained even if the semiconductor substrate is a SiC semiconductor substrate.
- FIG. 13 is a plan view of the semiconductor module of the thirteenth embodiment.
- the semiconductor module according to the present embodiment includes the semiconductor device 100 according to the first embodiment, the power semiconductor device 35, and an insulating substrate 38.
- the semiconductor device 100 is used as a control IC.
- the power semiconductor device 35 includes, for example, an IGBT as a power semiconductor element.
- the IGBT drives an inductive load (transformer coil) in an ignition system for an internal combustion engine such as an automobile engine.
- a passive element 37 such as a capacitor or a resistance element is arranged on the insulating substrate 38.
- the semiconductor device 100, the power semiconductor device 35, and the insulating substrate 38 are bonded onto the metal plate 36.
- the metal electrode 14 provided in the semiconductor device 100 and the insulating substrate 38 are electrically connected by two or more wirings 39.
- the power semiconductor device 35 and the insulating substrate are electrically connected by two or more wirings 39.
- the semiconductor module includes the semiconductor device 100 according to the first embodiment.
- the semiconductor module includes any of the semiconductor devices described in the first to twelfth embodiments. Also good.
- the semiconductor module according to the thirteenth embodiment includes a semiconductor device 100, a power semiconductor device, and an insulating substrate 38 on which a passive element 37 is disposed.
- the semiconductor device 100 and the insulating substrate 38 include two or more wirings.
- the power semiconductor device 35 and the 38 insulating substrate are electrically connected by two or more wirings 39.
- input / output wirings 40 are connected to the insulating substrate 38 and the metal plate 36.
- the semiconductor device 100 as a control IC improves the reliability of the control IC against surge. Therefore, it is possible to prevent the elements formed in the semiconductor device 100 from being destroyed by a surge generated from the manufacturing apparatus in the module assembling process, and to improve the assembling property and reliability of the semiconductor module.
- the semiconductor device has been described as having the first conductivity type as the N type and the second conductivity type as the P type.
- the first conductivity type is the P type.
- the second conductivity type is N-type, it is possible to obtain a semiconductor device having the same function.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Thyristors (AREA)
- Semiconductor Integrated Circuits (AREA)
Abstract
Description
本発明の実施形態を説明する前に、本発明の前提となる技術を説明する。図14、図15は本発明の前提となる半導体装置の断面図と平面図である。図14に示すように、半導体装置において、同一半導体基板内にIGBT15、サイリスタ素子17、回路領域24およびホール電流回収領域16が形成されている。回路領域24には、PchMOSFET18、NchMOSFET19が形成されている。
図1、図2は本実施の形態1における半導体装置100の断面図と平面図である。図1に示すように、半導体装置100において、同一半導体基板の第1主面側にIGBT15、サイリスタ素子17、回路領域24およびホール電流回収領域16が形成されている。回路領域24には、PchMOSFET18、NchMOSFET19が形成されている。
本実施の形態1における半導体装置100は、第1導電型(即ちN型)のドリフト層(N-ドリフト層4)を備える半導体基板の第1主面側に形成された絶縁ゲート型バイポーラトランジスタ15と、半導体基板の第1主面側に形成されたサイリスタ素子17と、半導体基板の第1主面側に形成された、CMOS回路素子(即ち、PchMOSFET18、NchMOSFET19)を含む回路領域24と、半導体基板の前記第1主面側に形成され、絶縁ゲート型バイポーラトランジスタ15と回路領域24を平面視で隔てるホール電流回収領域16と、半導体基板の第2主面側に形成された第2導電型(即ちP型)の拡散層(即ちP+コレクタ層2)と、を備え、平面視で、絶縁ゲート型バイポーラトランジスタ15の有効面積は、サイリスタ素子17の有効面積以下である。
図3は、本実施の形態2における半導体装置200の断面図である。本実施の形態2における半導体装置200は、半導体装置100(図1)と比較して、P+コレクタ層2の厚みが小さい。それ以外の構成は半導体装置100と同じため説明を省略する。
本実施の形態2における半導体装置200において、拡散層(即ちP+コレクタ層2)は、半導体基板の第2主面側に不純物を注入した後、レーザアニール処理を行うことで形成される。
本実施の形態3における半導体装置300の構成は半導体装置200(図3)と同じであるため、図3を用いて説明する。
本実施の形態3における半導体装置300は、拡散層(即ちP+コレクタ層2)を覆い、半導体基板の第2主面側に露出する金属層1をさらに備え、拡散層と金属層1とはオーミック接触しており、拡散層に注入された第2導電型の不純物の活性化率は1%より小さい。
本実施の形態4における半導体装置400の構成は半導体装置200(図3)と同じであるため、図3を用いて説明する。本実施の形態4においては、半導体基板の厚みをサイリスタ素子17の駆動に必要な通電能力を確保できる限界値まで厚く設計する。これにより、IGBT15およびサイリスタ素子17の機能を損なうことなく、P+コレクタ層2からのホール電流注入量を抑制し、実施の形態2、3よりも回路領域24の寄生動作防止効果を高めることができる。
本実施の形態4における半導体装置400において、半導体基板よりなるドリフト層(即ちN-ドリフト層4)の厚みは、サイリスタ素子17を駆動可能な厚みのうちの上限の厚みである。
図5は、本実施の形態5における半導体装置500の断面図である。半導体装置500において、拡散層(P+コレクタ層2)とN-ドリフト層4との間には、N+バッファ層3が設けられるN+バッファ層3は、N-ドリフト層4よりも不純物濃度が高い。その他の構成は半導体装置200(図3)と同じため、説明を省略する。
前記拡散層と前記ドリフト層の間に形成され、前記ドリフト層と同一の導電型であり、前記ドリフト層よりもキャリア濃度が高いバッファ層(即ちN+バッファ層3)をさらに備える。
図6は、本実施の形態6における半導体装置600の断面図である。図6に示すように、本実施の形態6では、IGBT15またはサイリスタ素子17と平面視で重なり、かつ回路領域24と平面視で重ならない領域に、拡散層(即ちP+コレクタ層2)が形成される。
本実施の形態6における半導体装置600において拡散層(P+コレクタ層2)は、IGBT15又はサイリスタ素子17と平面視で重なり、かつ回路領域24と平面視で重ならない領域に形成される。
図7は、本実施の形態7における半導体装置700の断面図である。半導体装置700においては、半導体装置600(図6)に対して、P+コレクタ層2とN-ドリフト層4との間に、N+バッファ層3をさらに設ける。N+バッファ層3は、P+コレクタ層2と平面視で重なるように設けられる。
本実施の形態における半導体装置700は、バッファ層(即ちN+バッファ層3)をさらに備え、バッファ層は、拡散層(即ちP+コレクタ層2)とドリフト層4の間に、拡散層と平面視で重なるように形成され、ドリフト層と同一の導電型であり、ドリフト層よりもキャリア濃度が高い。
図8は、本実施の形態8における半導体装置800の断面図である。半導体装置800は、実施の形態5の半導体装置500に対してエッジターミネーション領域25をさらに備える。エッジターミネーション領域25は、IGBT15、サイリスタ素子17、回路領域24およびホール電流回収領域16を平面視で囲むように形成される。
本実施の形態8における半導体装置800は、エッジターミネーション領域25をさらに備え、エッジターミネーション領域25は、絶縁ゲート型バイポーラトランジスタ15、サイリスタ素子17、回路領域24およびホール電流回収領域16を平面視で囲み、エッジターミネーション領域25の耐電圧は、回路領域24に形成されたダイオード26の逆耐電圧よりも小さい。
図9は、本実施の形態9における半導体装置900の断面図である。半導体装置900は、半導体装置800(図8)に備わるIGBT15Aは、トレンチ型のゲート27を備える。その他の構成は半導体装置800と同じである。
本実施の形態9における半導体装置900において、絶縁ゲート型バイポーラトランジスタ15Aのゲート27はトレンチ型である。
実施の形態6、実施の形態7に記載の半導体装置600,700において、P+コレクタ層2を形成しない領域(例えば回路領域24と平面視で重なる領域)では、低濃度のN-ドリフト層2と金属層1が接触している。そのため、N-ドリフト層2と金属層1との間にショットキー接合が形成される。ショットキー接合は、PN接合に比べて、逆耐圧が低い。そのため、P+コレクタ層2に負バイアスが印加された場合、ショットキー接合部に負電流が発生する。すると、回路領域24のNchMOSFET19のn+層、p-拡散層5、N-ドリフト層2からなる寄生NPNトランジスタにおいて、p-拡散層5の電位がN-ドリフト層2よりも高くなり、ベース・エミッタ間が順バイアスされる。これにより、寄生トランジスタが動作し、回路が誤動作してしまう可能性がある。
本実施の形態10における半導体装置1000は、回路領域側拡散層(即ちP-コレクタ層28)と、拡散層(P+コレクタ層2)および回路領域側拡散層を覆い、半導体基板の第2主面側に露出する金属層1と、をさらに備え、回路領域側拡散層は、回路領域24と平面視で重なる領域に、金属層1と隣接して設けられ、回路領域側拡散層は、拡散層(即ちP+コレクタ層2)と同一の導電型であり、拡散層よりもキャリア物濃度が低く、ドリフト層(即ちN-ドリフト層4)と回路領域側拡散層とで形成されるダイオード29の逆耐電圧は、ドリフト層と拡散層とで形成されるダイオード30の逆耐電圧よりも小さい。
図11、図12は本実施の形態11における半導体装置1100の断面図と平面図である。
本実施の形態11における半導体装置1100は、金属電極14を備えるボンディングパッド領域32をさらに備え、絶縁ゲート型バイポーラトランジスタ15とサイリスタ素子17とは平面視で100μm以上隔てて配置され、100μm以上隔てられた領域にボンディングパッド領域32が設けられる。
実施の形態1の半導体装置100において、半導体基板としてシリコン基板を用いていた。本実施の形態12における半導体装置においては、半導体基板としてSiC(シリコンカーバイド)半導体基板を用いる。シリコンカーバイドは、シリコンに対して絶縁破壊電界強度が約10倍、バンドギャップ幅が約3倍高い。そのため、半導体基板の薄厚化、エッジターミネーション領域25の縮小による半導体装置の小型化および耐熱性の向上を実現できる。
図13は、本実施の形態13の半導体モジュールの平面図である。本実施の形態の半導体モジュールは、実施の形態1の半導体装置100と、電力用半導体装置35と、絶縁基板38とを備える。半導体装置100は制御ICとして用いられる。電力用半導体装置35は例えば電力用半導体素子としてIGBTを備えている。このIGBTは、例えば、自動車エンジン等の内燃機関用イグニッションシステムにおいて誘導負荷(トランスコイル)を駆動する。絶縁基板38上には、コンデンサ、抵抗素子などの受動素子37が配置されている。
本実施の形態13における半導体モジュールは、半導体装置100と、電力用半導体装置と、受動素子37が配置された絶縁基板38と、を備え、半導体装置100と絶縁基板38とは2本以上の配線39で電気的に接続されており、電力用半導体装置35と38絶縁基板とは2本以上の配線39で電気的に接続されている。また、絶縁基板38、金属板36には、入出力用の配線40が接続される。
Claims (15)
- 第1導電型のドリフト層を備える半導体基板の第1主面側に形成された絶縁ゲート型バイポーラトランジスタ(15)と、
前記半導体基板の前記第1主面側に形成されたサイリスタ素子(17)と、
前記半導体基板の前記第1主面側に形成された、CMOS回路素子を含む回路領域(24)と、
前記半導体基板の前記第1主面側に形成され、前記絶縁ゲート型バイポーラトランジスタ(15)と前記回路領域(24)を平面視で隔てるホール電流回収領域(16)と、
前記半導体基板の第2主面側に形成された第2導電型の拡散層と、
を備え、
平面視で、前記絶縁ゲート型バイポーラトランジスタ(15)の有効面積は、前記サイリスタ素子(17)の有効面積以下である、
半導体装置。 - 前記拡散層は、前記半導体基板の前記第2主面側に不純物を注入した後、レーザアニール処理を行うことで形成される、
請求項1に記載の半導体装置。 - 前記拡散層を覆い、前記半導体基板の前記第2主面側に露出する金属層(1)をさらに備え、
前記拡散層と前記金属層(1)とはオーミック接触しており、
前記拡散層に注入された前記第2導電型の不純物の活性化率は1%より小さい、
請求項1に記載の半導体装置。 - 前記半導体基板よりなるドリフト層の厚みは、前記サイリスタ素子(17)を駆動可能な厚みのうちの上限の厚みである、
請求項1に記載の半導体装置。 - バッファ層をさらに備え、
前記バッファ層は、前記拡散層と前記ドリフト層の間に形成され、前記ドリフト層と同一の導電型であり、前記ドリフト層よりもキャリア濃度が高い、
請求項1に記載の半導体装置。 - 前記拡散層は、前記絶縁ゲート型バイポーラトランジスタ(15)又は前記サイリスタ素子(17)と平面視で重なり、かつ前記回路領域(24)と平面視で重ならない領域に形成される、
請求項1に記載の半導体装置。 - バッファ層をさらに備え、
前記バッファ層は、前記拡散層と前記ドリフト層の間に形成され、前記ドリフト層と同一の導電型であり、前記ドリフト層よりもキャリア濃度が高い、
請求項6に記載の半導体装置。 - エッジターミネーション領域(25)をさらに備え、
前記エッジターミネーション領域(25)は、前記絶縁ゲート型バイポーラトランジスタ(15)、前記サイリスタ素子(17)、前記回路領域(24)および前記ホール電流回収領域(16)を平面視で囲み、
前記エッジターミネーション領域(25)の耐電圧は、前記回路領域(24)に形成されたダイオード(26)の逆耐電圧よりも小さい、
請求項1に記載の半導体装置。 - 前記絶縁ゲート型バイポーラトランジスタ(15)のゲートはトレンチ型である、
請求項1に記載の半導体装置。 - 回路領域側拡散層と、
前記拡散層および前記回路領域側拡散層を覆い、半導体基板の前記第2主面側に露出する金属層(1)と
をさらに備え、
前記回路領域側拡散層は、前記回路領域(24)と平面視で重なる領域に、前記金属層(1)と隣接して形成され、
前記回路領域側拡散層は、前記拡散層と同一の導電型であり、前記拡散層よりも不純物濃度が低く、
前記ドリフト層と前記回路領域側拡散層とで形成されるダイオード(29)の逆耐電圧は、
前記ドリフト層と前記拡散層とで形成されるダイオード(30)の逆耐電圧よりも小さい、
請求項6に記載の半導体装置。 - 金属電極を備えるボンディングパッド領域(32)をさらに備え、
前記絶縁ゲート型バイポーラトランジスタ(15)と前記サイリスタ素子(17)とは平面視で100μm以上隔てて配置され、100μm以上隔てられた領域に前記ボンディングパッド領域(32)が設けられる、
請求項1に記載の半導体装置。 - 前記半導体基板はSiC半導体基板である、
請求項1に記載の半導体装置。 - 請求項1に記載の半導体装置(100)と、
電力用半導体装置(35)と、
受動素子(37)が配置された絶縁基板(38)と、
を備え、
前記半導体装置(100)と前記絶縁基板(38)とは2本以上の配線(39)で電気的に接続されており、
前記電力用半導体装置(35)と前記絶縁基板(38)とは2本以上の配線(39)で電気的に接続されている、
半導体モジュール。 - 請求項1に記載の半導体装置の製造方法であって、
(a)前記半導体基板の前記第2主面側に不純物を注入する工程と、
(b)前記工程(a)の後、前記半導体基板の前記第2主面側にレーザアニール処理を行うことで前記拡散層を形成する工程と、
を備える、
半導体装置の製造方法。 - 請求項1に記載の半導体装置の製造方法であって、
前記半導体装置は、前記拡散層を覆い、前記半導体基板の前記第2主面側に露出する金属層(1)をさらに備え、
(c)前記半導体基板の前記第2主面側に不純物を注入する工程と、
(d)前記工程(c)の後、前記半導体基板の前記第2主面側に前記金属層(1)を形成する工程と、
(e)前記工程(d)の後、前記半導体基板に300℃以上400℃以下で熱処理を行うことで前記拡散層を形成する工程と、
を備える、
半導体装置の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016569148A JP6275282B2 (ja) | 2015-01-13 | 2015-01-13 | 半導体装置、その製造方法および半導体モジュール |
PCT/JP2015/050641 WO2016113841A1 (ja) | 2015-01-13 | 2015-01-13 | 半導体装置、その製造方法および半導体モジュール |
US15/536,353 US10438947B2 (en) | 2015-01-13 | 2015-01-13 | Semiconductor device, manufacturing method therefor and semiconductor module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2015/050641 WO2016113841A1 (ja) | 2015-01-13 | 2015-01-13 | 半導体装置、その製造方法および半導体モジュール |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016113841A1 true WO2016113841A1 (ja) | 2016-07-21 |
Family
ID=56405408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/050641 WO2016113841A1 (ja) | 2015-01-13 | 2015-01-13 | 半導体装置、その製造方法および半導体モジュール |
Country Status (3)
Country | Link |
---|---|
US (1) | US10438947B2 (ja) |
JP (1) | JP6275282B2 (ja) |
WO (1) | WO2016113841A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018207394A1 (ja) * | 2017-05-10 | 2018-11-15 | 三菱電機株式会社 | 半導体装置及びその製造方法 |
JP2019201230A (ja) * | 2016-08-12 | 2019-11-21 | 富士電機株式会社 | 半導体集積回路の製造方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017127848B4 (de) * | 2017-11-24 | 2024-10-17 | Infineon Technologies Ag | Siliziumcarbid-Halbleiterbauelement mit Randabschlussstruktur |
US10685956B2 (en) * | 2017-12-28 | 2020-06-16 | Taiwan Semiconductor Manufacturing Co., Ltd. | Semiconductor device comprising deep counter well and manufacturing mehtod thereof |
JP7065007B2 (ja) * | 2018-10-01 | 2022-05-11 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
CN110556427B (zh) * | 2019-08-07 | 2021-01-08 | 南京芯舟科技有限公司 | 半导体器件及其结边缘区 |
CN111900087B (zh) * | 2020-08-31 | 2022-09-20 | 华虹半导体(无锡)有限公司 | Igbt器件的制造方法 |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04196359A (ja) * | 1990-11-28 | 1992-07-16 | Hitachi Ltd | 複合半導体装置及びそれを使つた電力変換装置 |
US5798538A (en) * | 1995-11-17 | 1998-08-25 | International Rectifier Corporation | IGBT with integrated control |
JP2002359373A (ja) * | 2001-03-29 | 2002-12-13 | Toshiba Corp | 半導体装置及びその製造方法 |
WO2003065459A1 (fr) * | 2002-01-28 | 2003-08-07 | Mitsubishi Denki Kabushiki Kaisha | Dispositif a semi-conducteur |
JP2003318399A (ja) * | 2002-04-25 | 2003-11-07 | Fuji Electric Co Ltd | 半導体装置およびその製造方法 |
JP2004363327A (ja) * | 2003-06-04 | 2004-12-24 | Fuji Electric Device Technology Co Ltd | 半導体装置 |
JP2008112828A (ja) * | 2006-10-30 | 2008-05-15 | Mitsubishi Electric Corp | 裏面高耐圧集積回路を用いた半導体装置 |
JP2009503850A (ja) * | 2005-07-27 | 2009-01-29 | インターナショナル レクティファイアー コーポレイション | スイッチモード電源用の高電圧非パンチスルーigbt |
JP2011127444A (ja) * | 2009-12-15 | 2011-06-30 | Mitsubishi Electric Corp | イグナイタ用電力半導体装置 |
JP2012054294A (ja) * | 2010-08-31 | 2012-03-15 | Mitsubishi Electric Corp | 半導体装置 |
JP2012089734A (ja) * | 2010-10-21 | 2012-05-10 | Fuji Electric Co Ltd | 逆阻止igbtの製造方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3196575B2 (ja) * | 1995-06-01 | 2001-08-06 | 株式会社日立製作所 | 複合半導体装置及びそれを使った電力変換装置 |
JP3424579B2 (ja) * | 1998-02-27 | 2003-07-07 | 株式会社豊田中央研究所 | 半導体装置 |
JP3707942B2 (ja) | 1998-12-17 | 2005-10-19 | 三菱電機株式会社 | 半導体装置とそれを用いた半導体回路 |
US6365932B1 (en) * | 1999-08-20 | 2002-04-02 | Denso Corporation | Power MOS transistor |
TWI305927B (en) | 2001-03-29 | 2009-02-01 | Toshiba Kk | Semiconductor device and method of making the same |
US6936908B2 (en) * | 2001-05-03 | 2005-08-30 | Ixys Corporation | Forward and reverse blocking devices |
US6559233B2 (en) | 2001-07-13 | 2003-05-06 | Rhodia Chimie | Composition comprising a copolymer at least two charged blocks and type of opposite charge |
DE112006000522T5 (de) * | 2005-03-03 | 2008-01-10 | Fuji Electric Holdings Co., Ltd., Kawasaki | Halbleiterbauelement und Verfahren zu dessen Herstellung |
JP5028748B2 (ja) * | 2005-04-15 | 2012-09-19 | 富士電機株式会社 | パワー半導体デバイスの温度計測装置 |
DE102005053487B4 (de) | 2005-11-09 | 2011-06-09 | Infineon Technologies Ag | Leistungs-IGBT mit erhöhter Robustheit |
JP5332175B2 (ja) | 2007-10-24 | 2013-11-06 | 富士電機株式会社 | 制御回路を備える半導体装置 |
JP2010045141A (ja) * | 2008-08-11 | 2010-02-25 | Fuji Electric Systems Co Ltd | 半導体装置および内燃機関用点火装置 |
WO2013172079A1 (ja) * | 2012-05-15 | 2013-11-21 | 三菱電機株式会社 | 半導体装置及びその製造方法 |
US9147727B2 (en) * | 2013-09-30 | 2015-09-29 | Infineon Technologies Ag | Semiconductor device and method for forming a semiconductor device |
-
2015
- 2015-01-13 JP JP2016569148A patent/JP6275282B2/ja active Active
- 2015-01-13 WO PCT/JP2015/050641 patent/WO2016113841A1/ja active Application Filing
- 2015-01-13 US US15/536,353 patent/US10438947B2/en active Active
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04196359A (ja) * | 1990-11-28 | 1992-07-16 | Hitachi Ltd | 複合半導体装置及びそれを使つた電力変換装置 |
US5798538A (en) * | 1995-11-17 | 1998-08-25 | International Rectifier Corporation | IGBT with integrated control |
JP2002359373A (ja) * | 2001-03-29 | 2002-12-13 | Toshiba Corp | 半導体装置及びその製造方法 |
WO2003065459A1 (fr) * | 2002-01-28 | 2003-08-07 | Mitsubishi Denki Kabushiki Kaisha | Dispositif a semi-conducteur |
JP2003318399A (ja) * | 2002-04-25 | 2003-11-07 | Fuji Electric Co Ltd | 半導体装置およびその製造方法 |
JP2004363327A (ja) * | 2003-06-04 | 2004-12-24 | Fuji Electric Device Technology Co Ltd | 半導体装置 |
JP2009503850A (ja) * | 2005-07-27 | 2009-01-29 | インターナショナル レクティファイアー コーポレイション | スイッチモード電源用の高電圧非パンチスルーigbt |
JP2008112828A (ja) * | 2006-10-30 | 2008-05-15 | Mitsubishi Electric Corp | 裏面高耐圧集積回路を用いた半導体装置 |
JP2011127444A (ja) * | 2009-12-15 | 2011-06-30 | Mitsubishi Electric Corp | イグナイタ用電力半導体装置 |
JP2012054294A (ja) * | 2010-08-31 | 2012-03-15 | Mitsubishi Electric Corp | 半導体装置 |
JP2012089734A (ja) * | 2010-10-21 | 2012-05-10 | Fuji Electric Co Ltd | 逆阻止igbtの製造方法 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019201230A (ja) * | 2016-08-12 | 2019-11-21 | 富士電機株式会社 | 半導体集積回路の製造方法 |
WO2018207394A1 (ja) * | 2017-05-10 | 2018-11-15 | 三菱電機株式会社 | 半導体装置及びその製造方法 |
JPWO2018207394A1 (ja) * | 2017-05-10 | 2019-11-07 | 三菱電機株式会社 | 半導体装置 |
CN110582851A (zh) * | 2017-05-10 | 2019-12-17 | 三菱电机株式会社 | 半导体装置及其制造方法 |
CN110582851B (zh) * | 2017-05-10 | 2023-05-05 | 三菱电机株式会社 | 半导体装置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2016113841A1 (ja) | 2017-06-08 |
JP6275282B2 (ja) | 2018-02-07 |
US10438947B2 (en) | 2019-10-08 |
US20170345817A1 (en) | 2017-11-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6275282B2 (ja) | 半導体装置、その製造方法および半導体モジュール | |
US8039879B2 (en) | Semiconductor device having a control circuit and method of its manufacture | |
CN106356399B (zh) | 半导体器件 | |
JP5182766B2 (ja) | 高耐圧半導体装置 | |
US9246410B2 (en) | Integrated power semiconductor component, production method and chopper circuit comprising integrated semiconductor component | |
US8334563B2 (en) | Field-effect semiconductor device and method of producing the same | |
US20090230500A1 (en) | Semiconductor device | |
CN111466031B (zh) | 碳化硅半导体装置以及电力变换装置 | |
WO2016148156A1 (ja) | 半導体装置および半導体装置の製造方法 | |
WO2017098547A1 (ja) | 炭化珪素半導体装置 | |
JPH11145466A (ja) | Mos型半導体素子 | |
TW201904076A (zh) | 半導體裝置 | |
JP2009188178A (ja) | 半導体装置 | |
TW201603186A (zh) | 用於cmos積體電路的緊密保護環結構 | |
JP2019075411A (ja) | 炭化ケイ素半導体装置、パワーモジュールおよび電力変換装置 | |
JP2007165424A (ja) | イグナイタ用半導体装置 | |
CN105103284B (zh) | 半导体装置 | |
KR102692122B1 (ko) | 반도체 소자 및 그 제조 방법 | |
JP2014036137A (ja) | 半導体装置 | |
JP5773558B2 (ja) | 制御回路を備える半導体装置 | |
JPH03180074A (ja) | 半導体装置 | |
JP2006179632A (ja) | 半導体装置およびその製造方法 | |
JP2005136092A (ja) | 半導体装置とその製造方法 | |
US10600898B2 (en) | Vertical bidirectional insulated gate turn-off device | |
JP7281807B2 (ja) | 半導体装置およびその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15877796 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016569148 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15536353 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 15877796 Country of ref document: EP Kind code of ref document: A1 |