JP2010087125A - 絶縁ゲート型半導体装置 - Google Patents
絶縁ゲート型半導体装置 Download PDFInfo
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- 230000000694 effects Effects 0.000 description 5
- 239000011229 interlayer Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
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- 238000000605 extraction Methods 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
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- 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
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7811—Vertical DMOS transistors, i.e. VDMOS transistors with an edge termination structure
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- 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
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7813—Vertical DMOS transistors, i.e. VDMOS transistors with trench gate electrode, e.g. UMOS transistors
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- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
- H01L2224/12—Structure, shape, material or disposition of the bump connectors prior to the connecting process
- H01L2224/13—Structure, shape, material or disposition of the bump connectors prior to the connecting process of an individual bump connector
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1305—Bipolar Junction Transistor [BJT]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1305—Bipolar Junction Transistor [BJT]
- H01L2924/13055—Insulated gate bipolar transistor [IGBT]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
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- H01L2924/11—Device type
- H01L2924/13—Discrete devices, e.g. 3 terminal devices
- H01L2924/1304—Transistor
- H01L2924/1306—Field-effect transistor [FET]
- H01L2924/13091—Metal-Oxide-Semiconductor Field-Effect Transistor [MOSFET]
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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- Semiconductor Integrated Circuits (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
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Abstract
【解決手段】電極構造を2層とし、ゲートパッド部の少なくとも一部に保護ダイオードとの非重畳領域を形成する。2層目のゲート電極層は一部が1層目のゲート電極層と重畳し、これを介して保護ダイオードおよびゲート電極と接続する。非重畳領域下方にセルおよび1層目のソース電極層を配置できるので、ゲートパッド部下方の無効領域を従来と比較して大幅に低減でき、ソース電極層内を基板の水平方向に流れる電流について、全てのセルがソースパッド部から最短距離の電流経路となる。
【選択図】図1
Description
つまり、ゲートパッド部28pと、配線部28wの一部は、保護ダイオードDiと非重畳となり、ゲートパッド部28p及び配線部28wの一部の下方に第1ソース電極層17およびセルが配置される。
2 n−型半導体層
4 チャネル層
7 トレンチ
10、10’ MOSFET
11 ゲート絶縁膜
13 ゲート電極
14 ボディ領域
15 ソース領域
16 層間絶縁膜
17 第1ソース電極層
18 第1ゲート電極層
19 第1ドレイン電極層
20 素子領域
21 セル
23 第1絶縁膜(窒化膜)
24 UBM
25 第2絶縁膜
27 第2ソース電極層
28 第2ゲート電極層
29 第2ドレイン電極層
28p ゲートパッド部
28w 配線部
28o 重畳領域
28u 非重畳領域
27p ソースパッド部
29p ドレインパッド部
37 ソースバンプ電極
38 ゲートバンプ電極
39 ドレインバンプ電極
200、210 MOSFET
217 第1ソース電極層
218 第1ゲート電極層
227 第2ソース電極層
227p ソースパッド部
228 第2ゲート電極層
228p ゲートパッド部
Claims (9)
- 一導電型半導体基板と、
該半導体基板上に設けられた一導電型半導体層と、
該半導体層表面に設けられ絶縁ゲート型トランジスタのセルが複数配置された素子領域と、
前記基板上に設けられて前記素子領域の一の部分と直接接触せず上方を覆い、該素子領域に接続する第1端子電極層と、
前記基板上に設けられて前記素子領域の他の部分と直接接触せず上方を覆い、該素子領域に接続して制御信号を印加する第2端子電極層と、
前記第1端子電極層下方に設けられ該第1端子電極層と接続する他の第1端子電極層と、
前記第2端子電極層下方の前記素子領域外に設けられ該第2端子電極層および前記素子領域と接続する他の第2端子電極層と、を具備し、
前記第2端子電極層は外部接続手段が固着するパッド部を有し、該パッド部下方に前記セルが配置され、
前記他の第2端子電極層下方で前記基板上に保護ダイオードが配置され、該保護ダイオードの一端は前記他の第1端子電極層に接続し、他端は前記素子領域のゲート電極に接続されることを特徴とする絶縁ゲート型半導体装置。 - 前記第2端子電極層は、前記他の第2端子電極層より大きいことを特徴とする請求項1に記載の絶縁ゲート型半導体装置。
- 前記第2端子電極層下方に前記他の第1端子電極層の一部が配置されることを特徴とする請求項2に記載の絶縁ゲート型半導体装置。
- 前記第2端子電極層は、前記パッド部から前記他の第2端子電極層まで延在する配線部を有し、該配線部が前記他の第2端子電極層に接続することを特徴とする請求項3に記載の絶縁ゲート型半導体装置。
- 前記パッド部が前記保護ダイオードと一部重畳して接続することを特徴とする請求項3に記載の絶縁ゲート型半導体装置。
- 前記配線部下方に前記セルが配置されることを特徴とする請求項4に記載の絶縁ゲート型半導体装置。
- 前記パッド部は前記保護ダイオードと重畳しない非重畳領域を有することを特徴とする請求項3に記載の絶縁ゲート型半導体装置。
- 前記非重畳領域下方に前記セルを配置することを特徴とする請求項7に記載の絶縁ゲート型半導体装置。
- 前記保護ダイオードと前記配線部が前記他の第2端子電極層を介して接続することを特徴とする請求項4記載の絶縁ゲート型半導体装置。
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WO2021225119A1 (ja) * | 2020-05-08 | 2021-11-11 | ローム株式会社 | 半導体装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004014707A (ja) * | 2002-06-05 | 2004-01-15 | Renesas Technology Corp | 半導体装置 |
JP2004289103A (ja) * | 2002-06-13 | 2004-10-14 | Matsushita Electric Ind Co Ltd | 半導体デバイス及びその製造方法 |
JP2007042817A (ja) * | 2005-08-02 | 2007-02-15 | Sanyo Electric Co Ltd | 絶縁ゲート型半導体装置およびその製造方法 |
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JP2004014707A (ja) * | 2002-06-05 | 2004-01-15 | Renesas Technology Corp | 半導体装置 |
JP2004289103A (ja) * | 2002-06-13 | 2004-10-14 | Matsushita Electric Ind Co Ltd | 半導体デバイス及びその製造方法 |
JP2007042817A (ja) * | 2005-08-02 | 2007-02-15 | Sanyo Electric Co Ltd | 絶縁ゲート型半導体装置およびその製造方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2021225119A1 (ja) * | 2020-05-08 | 2021-11-11 | ローム株式会社 | 半導体装置 |
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