WO1999017373A1 - Halbleiter-leistungsbauelement mit erhöhter latch-up-festigkeit - Google Patents
Halbleiter-leistungsbauelement mit erhöhter latch-up-festigkeit Download PDFInfo
- Publication number
- WO1999017373A1 WO1999017373A1 PCT/DE1998/002859 DE9802859W WO9917373A1 WO 1999017373 A1 WO1999017373 A1 WO 1999017373A1 DE 9802859 W DE9802859 W DE 9802859W WO 9917373 A1 WO9917373 A1 WO 9917373A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- zone
- power component
- semiconductor power
- charge carrier
- carrier recombination
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 43
- 238000005215 recombination Methods 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 230000003071 parasitic effect Effects 0.000 claims abstract description 7
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 5
- 230000006798 recombination Effects 0.000 claims description 34
- 239000002800 charge carrier Substances 0.000 claims description 28
- 239000012212 insulator Substances 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 238000009413 insulation Methods 0.000 abstract 1
- 230000001629 suppression Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000001465 metallisation Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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
- H01L27/0617—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
-
- 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
- H01L29/0649—Dielectric regions, e.g. SiO2 regions, air gaps
-
- 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
Definitions
- the invention relates to a semiconductor power component with increased latch-up strength by suppressing a parasitic thyristor, with a semiconductor body of one conduction type forming a base zone, in which a further base zone of the other conduction type is provided.
- IGBT bipolar transistor with an insulated gate
- the parasitic thyristor is formed from an n source zone, a p antenna, an n base zone and a p collector zone.
- the latch-up strength is previously increased by P + regions, which are disposed below the n + emitter region. As a result of this p + zone, the
- Source zone flowing hole current caused lateral voltage drop. This considerably reduces the risk that this voltage drop will approximately reach the value of the diffusion voltage between the n-source zone and the p-well and could lead to the parasitic thyristor snapping into place.
- a semiconductor power component of the type mentioned at the outset is distinguished according to the invention by a charge carrier recombination zone arranged in the further base zone.
- This charge carrier recombination zone can consist of metal or highly doped polycrystalline silicon.
- a titanium alloy is suitable as the metal.
- the charge carrier recombination zone can penetrate the further base zone or can only be embedded in a surface area of the further base zone. It is particularly advantageous if the charge carrier recombination zone is provided in a highly doped zone of one line type arranged in the further base zone. This one line type is preferably the n line type.
- the charge carrier recombination zone for example embedded in the further p-base zone, causes a large part of the hole current to recombine in the charge carrier recombination zone, and this current is then carried on to the emitter zone as an electron current in the MOS channel.
- the hole current flowing underneath the N source is considerably reduced, which leads to a significant increase in the latch-up strength.
- the hole recombination is controlled by the highly doped n + zone provided between the charge carrier recombination zone and the n base zone.
- the high recombination speed on the metal of the charge carrier recombination zone therefore does not have as great an effect on the n-base zone.
- the hole concentration in the adjacent area of the n-base zone can thereby be influenced, this hole concentration again affects the conductivity modulation in the n-base zone.
- an insulator layer is preferably provided below the charge carrier recombination zone.
- This insulator layer keeps the MOS part of the semiconductor power component, for example an IGBT, completely free of holes. As a result, a latch-up risk can practically be ruled out.
- the insulator layer also acts as a hole congestion zone, which further increases the conductivity modulation in the n-base zone.
- MCT MOS-controlled thyristor
- the highly doped zone of the one line type is then a p + semiconductor zone.
- EST emitter-switched thyristor
- the present invention can increase the latch-up strength by avoiding the latch-up problems of the parasitic MOSFET.
- Preferred application possibilities of the present invention consist in a MOSFET / diode cascode, a MOSFET / thyristor cascode, a transistor / diode cascode and a transistor / thyristor cascode.
- FIG. 1 shows an IGBT according to a first exemplary embodiment of the present invention
- FIG. 2 shows a MOSFET / diode cascode according to a second exemplary embodiment of the invention
- FIG. 3 shows a MOSFET / thyristor cascode according to a third exemplary embodiment of the invention
- FIG. 4 shows a transistor / diode cascode according to a fourth exemplary embodiment of the present invention
- Figure 5 is a side view of a fifth embodiment of the present invention.
- Figure 6 shows a MOSFET / thyristor cascode according to a sixth embodiment of the invention.
- FIG. 1 shows, as a first exemplary embodiment of the invention, an IGBT with a p + -conducting collector zone 1, an n ⁇ semiconductor layer 2, a p-semiconductor well 3, an n + - emitter zone 4, a silicon dioxide layer 5, one in the silicon dioxide layer 5 embedded gate electrode ⁇ and a potential electrode 7 also embedded in the silicon dioxide layer 5.
- a charge carrier recombination zone 8 for example made of a titanium alloy, is additionally embedded in the p-type semiconductor trough 3, an n + semiconductor zone 9 being arranged between the n " semiconductor layer 2 and this charge carrier recombination zone 8.
- the charge carrier recombination zone 8 which is embedded in the p-semiconductor trough 3 serving as a p-base, acts as a hole recombination zone. Much of the stream of holes combines in this charge carrier recombination zone 8, and the current thus obtained is further passed to the n + emitter zone 4 in
- the hole recombination can be controlled by the n + semiconductor zone 9 provided between the charge carrier recombination zone 8 and the n " semiconductor layer 2.
- This causes the high recombination speed on the metal, for example a titanium alloy, or polycrystalline silicon of the charge carrier recombination zone 8 to have a high effect Recombination speed does not affect the base zone of the n " semiconductor layer 2 so strongly. It can thus, the hole concentration in the n "-type semiconductor layer 2 being affected, whereby the conductivity modulation in the n ⁇ -Halblei- ter harsh controlled.
- FIG. 2 shows a second exemplary embodiment of the present invention using a MOSFET / diode cascode.
- an insulator layer 10 made of, for example, silicon dioxide or silicon nitride below the p-type semiconductor trough 3 or the charge carrier recombination zone 8 and a p + semiconductor zone 11 are also provided here.
- the charge carrier recombination zone 8 here extends through the p-type semiconductor trough 3 to the insulator layer 10 and is surrounded by the n + semiconductor zone 9.
- a metallization 14 made of aluminum is provided on the insulator layer 10 and contacts the emitter zone 4 and the semiconductor trough 3.
- the insulator layer 10 arranged below the charge carrier recombination zone 8 keeps the MOS part completely free of holes, as a result of which the risk of latch-up can be practically completely eliminated.
- the suction effect on the charge carriers with the opposite charge to the semiconductor layer 2 can be controlled by means of the size of the slot formed by the semiconductor trough 3 and the insulator layer 10.
- a highly doped n + zone 13 also serves to control this suction effect.
- n + emitter zone 4 need not be designed in a ring shape, but can fill a full circle. The same also applies to the insulator layer 10 and to the p + semiconductor zone 11.
- FIG. 3 shows a further exemplary embodiment of the present invention on the basis of a MOSFET / thyristor cascode, in which case the metallization 14 forms an emitter electrode 15. A part of the n + emitter zone 4 does not need to reach the insulator layer 10, as is indicated by a broken line 16.
- FIG. 4 shows a further exemplary embodiment of the invention using a transistor / diode cascode
- FIG. 5 shows an exemplary embodiment of the invention in which the n " semiconductor layer 2 is guided" channel-shaped "to the n + semiconductor zone 9. 4, which also shows an emitter electrode 15 and a base electrode 17, the conductive connection 12 can also be provided. This conductive connection 12 can also be provided in the embodiment of Figure 5.
- FIG. 6 shows a MOSFET / thyristor cascode, which is constructed similarly to the exemplary embodiment from FIG. 2.
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)
- Thyristors (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98958170A EP1019967A1 (de) | 1997-09-30 | 1998-09-24 | Halbleiter-leistungsbauelement mit erhöhter latch-up-festigkeit |
JP2000514338A JP2001518717A (ja) | 1997-09-30 | 1998-09-24 | 高められたラッチアップ耐性を備えたパワー半導体素子 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19743265.4 | 1997-09-30 | ||
DE1997143265 DE19743265A1 (de) | 1997-09-30 | 1997-09-30 | Halbleiter-Leistungsbauelement mit erhöhter Latch-up-Festigkeit |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999017373A1 true WO1999017373A1 (de) | 1999-04-08 |
Family
ID=7844194
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1998/002859 WO1999017373A1 (de) | 1997-09-30 | 1998-09-24 | Halbleiter-leistungsbauelement mit erhöhter latch-up-festigkeit |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1019967A1 (de) |
JP (1) | JP2001518717A (de) |
DE (1) | DE19743265A1 (de) |
WO (1) | WO1999017373A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001043200A1 (de) * | 1999-12-06 | 2001-06-14 | Infineon Technologies Ag | Steuerbares in beide richtungen sperrendes halbleiterschaltelement |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10055765A1 (de) | 2000-11-10 | 2002-05-23 | Infineon Technologies Ag | Verfahren zur Herstellung eines MOS-Feldeffekt-Transistors mit Rekombinationszone |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60189967A (ja) * | 1984-03-12 | 1985-09-27 | Nippon Telegr & Teleph Corp <Ntt> | 半導体装置 |
US4620211A (en) * | 1984-08-13 | 1986-10-28 | General Electric Company | Method of reducing the current gain of an inherent bipolar transistor in an insulated-gate semiconductor device and resulting devices |
EP0323549A2 (de) * | 1987-12-28 | 1989-07-12 | Motorola Inc. | Bipolare Halbleiteranordnung mit einer leitenden Rekombinationsschicht |
US4901124A (en) * | 1988-04-22 | 1990-02-13 | Fuji Electric Co., Ltd. | Conductivity modulated MOSFET |
EP0615292A1 (de) * | 1993-03-10 | 1994-09-14 | Hitachi, Ltd. | Bipolartransistor mit isoliertem Gate |
US5396087A (en) * | 1992-12-14 | 1995-03-07 | North Carolina State University | Insulated gate bipolar transistor with reduced susceptibility to parasitic latch-up |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3618166A1 (de) * | 1986-05-30 | 1987-12-03 | Telefunken Electronic Gmbh | Lateraltransistor |
EP0405200A1 (de) * | 1989-06-30 | 1991-01-02 | Asea Brown Boveri Ag | MOS-gesteuertes, bipolares Leistungshalbleiter-Bauelement |
-
1997
- 1997-09-30 DE DE1997143265 patent/DE19743265A1/de not_active Withdrawn
-
1998
- 1998-09-24 WO PCT/DE1998/002859 patent/WO1999017373A1/de not_active Application Discontinuation
- 1998-09-24 JP JP2000514338A patent/JP2001518717A/ja not_active Abandoned
- 1998-09-24 EP EP98958170A patent/EP1019967A1/de not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60189967A (ja) * | 1984-03-12 | 1985-09-27 | Nippon Telegr & Teleph Corp <Ntt> | 半導体装置 |
US4620211A (en) * | 1984-08-13 | 1986-10-28 | General Electric Company | Method of reducing the current gain of an inherent bipolar transistor in an insulated-gate semiconductor device and resulting devices |
EP0323549A2 (de) * | 1987-12-28 | 1989-07-12 | Motorola Inc. | Bipolare Halbleiteranordnung mit einer leitenden Rekombinationsschicht |
US4901124A (en) * | 1988-04-22 | 1990-02-13 | Fuji Electric Co., Ltd. | Conductivity modulated MOSFET |
US5396087A (en) * | 1992-12-14 | 1995-03-07 | North Carolina State University | Insulated gate bipolar transistor with reduced susceptibility to parasitic latch-up |
EP0615292A1 (de) * | 1993-03-10 | 1994-09-14 | Hitachi, Ltd. | Bipolartransistor mit isoliertem Gate |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 010, no. 032 (E - 379) 7 February 1986 (1986-02-07) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001043200A1 (de) * | 1999-12-06 | 2001-06-14 | Infineon Technologies Ag | Steuerbares in beide richtungen sperrendes halbleiterschaltelement |
US6864535B2 (en) | 1999-12-06 | 2005-03-08 | Infineon Technologies Ag | Controllable semiconductor switching element that blocks in both directions |
Also Published As
Publication number | Publication date |
---|---|
JP2001518717A (ja) | 2001-10-16 |
DE19743265A1 (de) | 1999-04-08 |
EP1019967A1 (de) | 2000-07-19 |
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