JP3914226B2 - 高耐圧半導体装置 - Google Patents
高耐圧半導体装置 Download PDFInfo
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- JP3914226B2 JP3914226B2 JP2004285245A JP2004285245A JP3914226B2 JP 3914226 B2 JP3914226 B2 JP 3914226B2 JP 2004285245 A JP2004285245 A JP 2004285245A JP 2004285245 A JP2004285245 A JP 2004285245A JP 3914226 B2 JP3914226 B2 JP 3914226B2
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- H10D12/411—Insulated-gate bipolar transistors [IGBT]
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- H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
- H10D62/103—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices
- H10D62/105—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE]
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- H10D62/124—Shapes, relative sizes or dispositions of the regions of semiconductor bodies or of junctions between the regions
- H10D62/126—Top-view geometrical layouts of the regions or the junctions
- H10D62/127—Top-view geometrical layouts of the regions or the junctions of cellular field-effect devices, e.g. multicellular DMOS transistors or IGBTs
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- H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
- H10D62/103—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices
- H10D62/105—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE]
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
- H10D62/103—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices
- H10D62/105—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE]
- H10D62/106—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE] having supplementary regions doped oppositely to or in rectifying contact with regions of the semiconductor bodies, e.g. guard rings with PN or Schottky junctions
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- H10D62/80—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials
- H10D62/83—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge
- H10D62/832—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge being Group IV materials comprising two or more elements, e.g. SiGe
- H10D62/8325—Silicon carbide
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- H10W72/931—Shapes of bond pads
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- H10W72/00—Interconnections or connectors in packages
- H10W72/90—Bond pads, in general
- H10W72/941—Dispositions of bond pads
- H10W72/9415—Dispositions of bond pads relative to the surface, e.g. recessed, protruding
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- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/90—Bond pads, in general
- H10W72/941—Dispositions of bond pads
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- H—ELECTRICITY
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- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
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Description
SiC素子の基礎と応用、荒井和雄編、ページ165〜168
本願において開示される発明のうち、代表的なものの概要を簡単に説明すれば下記の通りである。
本発明によれば、必要以上に大きな接合終端領域を形成せずに、デバイス終端部における電界集中を緩和できるので、無駄な接合終端領域を減らすことができる。無駄な接合終端領域が減ることにより、コストは下がる。
図1は、本発明の第1の実施形態に係る高耐圧半導体装置を示す平面図である。また、図2は、図1の平面図の矢視A−A’断面図である。
図5は、本発明の第3の実施形態に係る高耐圧半導体装置を示す平面図である。また、図6は、図5の平面図の矢視B−B’断面図である。なお、以下の図において、既出の図と対応する部分には既出の図と同一符号を付してあり、詳細な説明は省略する。
図7は、本発明の第2の実施形態に係る高耐圧半導体装置を断面図である。
Claims (6)
- 法線の方向が<0001>方向および<000−1>方向とは異なる主面を備えた炭化珪素基板と、
前記炭化珪素基板の前記主面上に形成された第1導電型の炭化珪素層と、
前記炭化珪素層の表面に形成され、前記<0001>方向および前記<000−1>方向に対する前記主面のオフ角方向の幅の方が、前記オフ角方向と反対側の幅よりも広い第2導電型の半導体層を含む接合終端領域と、
前記炭化珪素層に設けられた第1の電極と、
前記主面と反対側の前記炭化珪素基板の面に設けられた第2の電極と
を具備し、
前記第1の電極は、その端部が前記接合終端領域上に位置するように前記炭化珪素層に設けられていることを特徴とする高耐圧半導体装置。 - 前記炭化珪素層と前記第1の電極とはショットキー接触されていることを特徴とする請求項1に記載の高耐圧半導体装置。
- 前記炭化珪素基板は第一導電型であり、前記炭化珪素層の表面に選択的に形成された第2導電型のウェルと、該ウェルの表面に選択的に形成された第1導電型のソース層と、該ソース層と前記炭化珪素層とで挟まれた前記ウェル上にゲート絶縁膜を介して設けられたゲート電極とをさらに具備してなることを特徴とする請求項1に記載の高耐圧半導体装置。
- 前記炭化珪素基板は第二導電型であり、前記炭化珪素層の表面に選択的に形成された第2導電型のウェルと、該ウェルの表面に選択的に形成された第1導電型のソース層と、該ソース層と前記炭化珪素層とで挟まれた前記ウェル上にゲート絶縁膜を介して設けられたゲート電極とをさらに具備してなることを特徴とする請求項1に記載の高耐圧半導体装置。
- 前記炭化珪素層は、エピタキシャル成長層であることを特徴とする請求項1ないし4のいずれか1項に記載の高耐圧半導体装置。
- 前記半導体層は、リサーフ層であることを特徴とする請求項1ないし4のいずれか1項に記載の高耐圧半導体装置
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004285245A JP3914226B2 (ja) | 2004-09-29 | 2004-09-29 | 高耐圧半導体装置 |
| US11/234,238 US7649213B2 (en) | 2004-09-29 | 2005-09-26 | Semiconductor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004285245A JP3914226B2 (ja) | 2004-09-29 | 2004-09-29 | 高耐圧半導体装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2006100593A JP2006100593A (ja) | 2006-04-13 |
| JP3914226B2 true JP3914226B2 (ja) | 2007-05-16 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004285245A Expired - Fee Related JP3914226B2 (ja) | 2004-09-29 | 2004-09-29 | 高耐圧半導体装置 |
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| Country | Link |
|---|---|
| US (1) | US7649213B2 (ja) |
| JP (1) | JP3914226B2 (ja) |
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2004
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2006100593A (ja) | 2006-04-13 |
| US20060065899A1 (en) | 2006-03-30 |
| US7649213B2 (en) | 2010-01-19 |
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