WO2001054168A2 - Halbleiterbauelement und entsprechendes prüfverfahren - Google Patents
Halbleiterbauelement und entsprechendes prüfverfahren Download PDFInfo
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- WO2001054168A2 WO2001054168A2 PCT/EP2000/013024 EP0013024W WO0154168A2 WO 2001054168 A2 WO2001054168 A2 WO 2001054168A2 EP 0013024 W EP0013024 W EP 0013024W WO 0154168 A2 WO0154168 A2 WO 0154168A2
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- diode device
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 44
- 238000012360 testing method Methods 0.000 title claims description 9
- 230000015556 catabolic process Effects 0.000 claims abstract description 15
- 238000010998 test method Methods 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000011161 development Methods 0.000 description 10
- 230000018109 developmental process Effects 0.000 description 10
- 235000012431 wafers Nutrition 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 230000001939 inductive effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
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Definitions
- the present invention relates to a semiconductor component with a first main connection; a second main connection; a control terminal for controlling the current flowing between the main terminals; and a first diode device which can be switched between the first main connection and the control connection and which has a first breakdown voltage such that it short-circuits the first main connection with the control connection and thus switches on the semiconductor component when the voltage drop across the first diode device exceeds a predetermined value, wherein the first diode device is integrated with the control connection.
- short-circuiting is meant that a current flow is made possible without a large additional resistance, while the voltage drop across the first diode device is maintained.
- the current is switched off in the case of an inductive load, for example for ignition transistors or ignition IGBTs.
- the current driven by the inductance must be conducted through the component in the avalanche breakthrough if the component is not additionally protected. There is a risk that the component will be irreversibly destroyed.
- One possibility of protection is active generation, as is known from J.
- the voltage at which the avalanche breakdown occurs locally (e.g. in the edge region) or globally in the cell field (avalanche voltage) is higher than the breakdown voltage of the zener diode ( Zener voltage).
- an IGBT with active generation by a polydiode chain is presented.
- the polydiode chain is arranged over a locally widened section of the edge termination and is connected on one side to the gate and on the other side to an n-doped region (for example the channel stopper of the edge termination) which is at the collector potential when reverse voltage is present (Backside potential).
- the edge termination itself consists of floating field rings that have simply been widened in the area of the polydiodes (with the field rings remaining at the same distance from one another).
- the breakdown characteristic of such an IGBT with an integrated Zener diode only shows the voltage at which the IGBT begins to conduct current through the MOS channel opened by the active zener, but not where the avalanche voltage of the IGBT lies.
- the Avalan voltage are set very far above the Zener voltage, for example about 200 V according to this document. This in turn leads to the forward voltage or the on-resistance of the IGBT or the transistor being increased accordingly.
- UIS Unclamped Inductive Switching
- EP 0 845 813 A1 An arrangement is known from EP 0 845 813 A1 in which a bonding wire is used to make a conductive connection between the lead frame or substrate located at the rear side potential and a base contact in order to enable the IGBT to be switched off more quickly.
- this document is not concerned with active generation.
- FIG. 5 shows a schematic illustration of a known semiconductor component.
- FIG. 5 shows the basic structure of an IGBT or power transistor (depending on whether the region 30 is n * or p + - conductive) with an integrated active generation in silicon technology.
- 40 designates a rear side metallization as a drain connection or collector connection, 30 a drain region (n + ) or a collector region (p * ), 20 a first base region of the n ′ line type , 50 a second base region of the p Line type, 60 a source region or emitter region of n * line type , 90 an insulator layer in the form of an oxide layer, 70 a gate, 100 a Zener diode chain which is connected on the one hand to the gate 70 and on the other hand via a contact bridge 105 to an n Trough 110 is connected within the first base region 20.
- the Zener diode chain 100 is realized by a series connection of a plurality of polysilicon Zener diodes, which are insulated from the active region of the semiconductor component via the oxide layer 90.
- edge closure are floating field rings, as from Z. John Shen et al. (loc. cit.) is known.
- FIG. 6 shows a schematic illustration of a further known semiconductor component.
- two floating field rings of p-type 52, 54 are provided, which are connected via connection areas VI, V2 to the Zener diode chain divided into 3 parts 100 a, b, c.
- FIG. 7 shows a schematic illustration of yet another known semiconductor component.
- field plates V3, V4 are provided in order to connect the Zener diode chain divided into 3 parts, 100 a, b, c.
- this object is achieved by the semiconductor component specified in claim 1 or by the test method specified in claim 11.
- the first diode device for connection to the first main connection has a first external contacting connection. has rich.
- the active zenerization at the wafer level is initially not yet connected, so that the zener voltage and the avalanche voltage can be measured independently of one another.
- the zener is connected by a small additional effort in the form of a bond from the lead frame to a contact area on the chip. Further appropriate measures can be taken so that the avalanche voltage is not falsified by the zener diode chain which is arranged in the edge area and is not yet connected.
- the main advantage of the configuration according to the invention is that the Zener voltage and the Avalanche voltage can be measured separately from one another, so that a sufficiently large safety distance between Zener voltage and Avalanche voltage can be guaranteed, and this already at the wafer level.
- a safety distance between the Zener voltage and the avalanche voltage can thus be guaranteed and checked, and on the other hand, because of its verifiability, this safety distance can be dimensioned more narrowly, which would affect other properties of the semiconductor component, e.g. its on-resistance, benefits.
- the first external contact area has a bond pad.
- the first external contact area is connected to via a bond connection a substrate, preferably a lead frame, with which the first main connection is in electrical contact.
- a second diode device is connected in series with the first diode device, which has a second breakdown voltage such that the sum of the first and second breakdown voltage is greater than one predetermined lower limit of the breakdown voltage of the semiconductor element between the first and the second main terminal.
- the second diode device has a second external contact area for the external connection of the end not connected to the first diode device.
- the first and / or the second diode device are a Zener diode device.
- the semiconductor component is a vertical DMOS transistor or a vertical IGBT transistor.
- the second diode device is connected to the first main connection via an intermediate region of a first conductivity type.
- a trough of a second conduction type is provided in the intermediate area and is connected to the first diode device, the trough and the intermediate area forming at least part of the second diode device.
- the semiconductor component is constructed using silicon technology.
- FIG. 1 shows a schematic illustration of a semiconductor component as a first embodiment of the present invention
- FIG. 2 shows a schematic illustration of the semiconductor component according to FIG. 1 in the connected state
- FIG. 3 shows a schematic illustration of a semiconductor component as a second embodiment of the present invention
- FIG. 4 shows a schematic illustration of a semiconductor component as a third embodiment of the present invention.
- Fig. 7 is a schematic representation of yet another known semiconductor device.
- FIG. 1 shows a schematic illustration of a semiconductor component as a first embodiment of the present invention
- FIG. 2 shows a schematic illustration of the semiconductor component according to FIG. 1 in the connected state.
- the right end of the zener diode chain 100 is not connected to the first base region 20, but instead has a first contact region 120 in the form of a bond pad, which is on the top of the Wafers exposed.
- This bond pad can serve both for measurement and as a surface for attaching a bond wire 140, as illustrated in FIG. 2, the bond wire being connected there to a lead frame 160, with which the rear side metallization 40 of the drain connection or Collector connection 30 is in electrical contact.
- the avalanche voltage between the drain contact or collector contact 40 and the source contact or emitter contact 80 can thus be measured independently of the zener voltage at the wafer level (state according to FIG. 1).
- the Zener voltage can be determined by a simple measurement between the gate 70 and the first contacting area 120.
- the active zener is only connected during assembly by a bonding wire 140 between the lead frame and the first contact area 120 (state according to FIG. 2).
- FIG. 3 shows a schematic illustration of a semiconductor component as a second embodiment of the present invention.
- the first contacting region 120 is connected to the first base region 20 and thus to the drain potential or collector potential via a second zener diode chain 101, the second contacting region and the n-well 130.
- This embodiment is It is particularly useful to ensure that the avalanche voltage is not falsified by the zener diode chain arranged in the edge area and not yet connected. In particular, this measure sets the first Zener diode chain 100 to a high voltage (of course below the Zener voltage) when measuring the avalanche voltage.
- the breakdown voltage of the second Zener diode chain 101 is selected such that the sum of it and the Zener voltage of the first Zener diode chain is greater than the avalanche voltage to be measured or the lower limit defined during the measurement of the avalanche voltage.
- the first Zener diode chain 100 has a reverse voltage of 400 V and the second Zener diode chain 101 has a reverse voltage of 100 V, so that the total reverse voltage is 500 V.
- components which have an avalanche voltage of at least 440 V, for example, are considered good when the measurement is carried out, if a safety distance of 40 V from the breakdown voltage of the first Zener diode chain is to be maintained. As in the first embodiment, this is
- Zener diode bond pad 120 connected to lead frame 160 during assembly with a bond wire 140.
- FIG. 4 shows a schematic illustration of a semiconductor component as a third embodiment of the present invention.
- the same effect which is achieved in the second exemplary embodiment by the second zener diode chain 101 is achieved by an integrated pn diode which comprises the p-well 135 and the first base region 20.
- the bond pad 120 is connected to the lead frame 160 with a bond 140 during assembly.
- edge termination of the semiconductor component is independent of the invention and can be designed in accordance with the known structures according to FIGS. 1 to 3.
- the present invention is also not limited to the IGBT or DMOS transistor described, but can be applied to any more complicated structure, for example a thyristor structure.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Semiconductor Integrated Circuits (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/169,920 US6762440B1 (en) | 2000-01-18 | 2000-12-20 | Semiconductor component and corresponding test method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10001865.3 | 2000-01-18 | ||
DE10001865A DE10001865B4 (de) | 2000-01-18 | 2000-01-18 | Halbleiterbauelement und Verarbeitungsverfahren zum Verarbeiten des Halbleiterbauelements |
Publications (2)
Publication Number | Publication Date |
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WO2001054168A2 true WO2001054168A2 (de) | 2001-07-26 |
WO2001054168A3 WO2001054168A3 (de) | 2001-12-27 |
Family
ID=7627845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2000/013024 WO2001054168A2 (de) | 2000-01-18 | 2000-12-20 | Halbleiterbauelement und entsprechendes prüfverfahren |
Country Status (3)
Country | Link |
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US (1) | US6762440B1 (de) |
DE (1) | DE10001865B4 (de) |
WO (1) | WO2001054168A2 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10001865B4 (de) | 2000-01-18 | 2004-09-23 | Infineon Technologies Ag | Halbleiterbauelement und Verarbeitungsverfahren zum Verarbeiten des Halbleiterbauelements |
JP4136778B2 (ja) * | 2003-05-07 | 2008-08-20 | 富士電機デバイステクノロジー株式会社 | 絶縁ゲート型バイポーラトランジスタ |
DE102004045467B4 (de) | 2004-09-20 | 2020-07-30 | Infineon Technologies Ag | Feldeffekt-Trenchtransistor |
US7511357B2 (en) * | 2007-04-20 | 2009-03-31 | Force-Mos Technology Corporation | Trenched MOSFETs with improved gate-drain (GD) clamp diodes |
US8164162B2 (en) * | 2009-06-11 | 2012-04-24 | Force Mos Technology Co., Ltd. | Power semiconductor devices integrated with clamp diodes sharing same gate metal pad |
US8435853B2 (en) | 2010-08-30 | 2013-05-07 | Infineon Technologies Ag | Method for forming a semiconductor device, and a semiconductor with an integrated poly-diode |
JP5729371B2 (ja) * | 2012-12-27 | 2015-06-03 | 富士電機株式会社 | 半導体装置 |
EP2975641B1 (de) * | 2013-03-14 | 2021-05-12 | Fuji Electric Co., Ltd. | Halbleiterbauelement |
CN107710408B (zh) | 2016-05-26 | 2021-06-18 | 新电元工业株式会社 | 半导体装置 |
FR3062953A1 (fr) * | 2017-02-15 | 2018-08-17 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Dispositif comportant une pluralite de diodes |
US20190326403A1 (en) * | 2018-04-18 | 2019-10-24 | Intel Corporation | Thin film diode based back-end temperature sensors |
CN110875303B (zh) * | 2018-08-31 | 2022-05-06 | 无锡华润上华科技有限公司 | 一种瞬态电压抑制器件及其制造方法 |
Citations (3)
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DE4228832A1 (de) * | 1992-08-29 | 1994-03-10 | Daimler Benz Ag | Feldeffekt-gesteuertes Halbleiterbauelement |
EP0845813A1 (de) * | 1996-12-02 | 1998-06-03 | Zetex Plc | Bipolartransistor mit isolierter Gateelektrode |
US5973359A (en) * | 1997-11-13 | 1999-10-26 | Fuji Electric Co., Ltd. | MOS type semiconductor device |
Family Cites Families (4)
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US4896196A (en) * | 1986-11-12 | 1990-01-23 | Siliconix Incorporated | Vertical DMOS power transistor with an integral operating condition sensor |
US5266831A (en) * | 1991-11-12 | 1993-11-30 | Motorola, Inc. | Edge termination structure |
DE19811297B4 (de) * | 1997-03-17 | 2009-03-19 | Fuji Electric Co., Ltd., Kawasaki | MOS-Halbleitervorrichtung mit hoher Durchbruchspannung |
DE10001865B4 (de) | 2000-01-18 | 2004-09-23 | Infineon Technologies Ag | Halbleiterbauelement und Verarbeitungsverfahren zum Verarbeiten des Halbleiterbauelements |
-
2000
- 2000-01-18 DE DE10001865A patent/DE10001865B4/de not_active Expired - Fee Related
- 2000-12-20 WO PCT/EP2000/013024 patent/WO2001054168A2/de active Application Filing
- 2000-12-20 US US10/169,920 patent/US6762440B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4228832A1 (de) * | 1992-08-29 | 1994-03-10 | Daimler Benz Ag | Feldeffekt-gesteuertes Halbleiterbauelement |
EP0845813A1 (de) * | 1996-12-02 | 1998-06-03 | Zetex Plc | Bipolartransistor mit isolierter Gateelektrode |
US5973359A (en) * | 1997-11-13 | 1999-10-26 | Fuji Electric Co., Ltd. | MOS type semiconductor device |
Non-Patent Citations (1)
Title |
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SHEN Z J ET AL: "HIGH VOLTAGE CLAMPED IGBT FOR AUTOMOTIVE IGNITION APPLICATIONS" PROCEEDINGS OF THE 10TH INTERNATIONAL SYMPOSIUM ON POWER SEMICONDUCTOR DEVICES & IC'S. ISPSD '98. KYOTO, JUNE 3 - 6, 1998, INTERNATIONAL SYMPOSIUM ON POWER SEMICONDUCTOR DEVICES & IC'S, NEW YORK, NY: IEEE, US, 3. Juni 1998 (1998-06-03), Seiten 97-100, XP000801042 ISBN: 0-7803-4752-8 in der Anmeldung erw{hnt * |
Also Published As
Publication number | Publication date |
---|---|
DE10001865B4 (de) | 2004-09-23 |
WO2001054168A3 (de) | 2001-12-27 |
US6762440B1 (en) | 2004-07-13 |
DE10001865A1 (de) | 2001-08-23 |
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