JP2011210901A - デプレッション型mosトランジスタ - Google Patents
デプレッション型mosトランジスタ Download PDFInfo
- Publication number
- JP2011210901A JP2011210901A JP2010076366A JP2010076366A JP2011210901A JP 2011210901 A JP2011210901 A JP 2011210901A JP 2010076366 A JP2010076366 A JP 2010076366A JP 2010076366 A JP2010076366 A JP 2010076366A JP 2011210901 A JP2011210901 A JP 2011210901A
- Authority
- JP
- Japan
- Prior art keywords
- type
- mos transistor
- impurity region
- region
- concentration impurity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000012535 impurity Substances 0.000 claims abstract description 81
- 239000004065 semiconductor Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 5
- 238000005468 ion implantation Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 6
- 229910052796 boron Inorganic materials 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 229910052785 arsenic Inorganic materials 0.000 description 5
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 5
- 238000002513 implantation Methods 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
Images
Classifications
-
- 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
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66568—Lateral single gate silicon transistors
- H01L29/66575—Lateral single gate silicon transistors where the source and drain or source and drain extensions are self-aligned to the sides of the gate
- H01L29/6659—Lateral single gate silicon transistors where the source and drain or source and drain extensions are self-aligned to the sides of the gate with both lightly doped source and drain extensions and source and drain self-aligned to the sides of the gate, e.g. lightly doped drain [LDD] MOSFET, double diffused drain [DDD] MOSFET
-
- 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
- H01L29/10—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 not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/107—Substrate region of field-effect devices
- H01L29/1075—Substrate region of field-effect devices of field-effect transistors
- H01L29/1079—Substrate region of field-effect devices of field-effect transistors with insulated gate
- H01L29/1083—Substrate region of field-effect devices of field-effect transistors with insulated gate with an inactive supplementary region, e.g. for preventing punch-through, improving capacity effect or leakage current
-
- 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
- H01L29/7838—Field effect transistors with field effect produced by an insulated gate without inversion channel, e.g. buried channel lateral MISFETs, normally-on lateral MISFETs, depletion-mode lateral MISFETs
Landscapes
- 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)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Abstract
【解決手段】デプレッション型NチャネルMOSトランジスタの、チャネル領域となる低濃度N型不純物領域の下に、同程度の濃度の低濃度P型不純物領域を形成し、低濃度N型不純物領域の深さばらつきを抑制する。
【選択図】図1
Description
1)チャネル不純物濃度
2)ゲート酸化膜厚
3)固定電荷などで決まるフラットバンド電圧
デプレッション型MOSトランジスタの作成方法やその特性劣化・ばらつきを低減する方法としては、例えば特許文献1などに開示されている。
まず、半導体基板上の、第1導電型のウェル領域と、第1導電型ウェル領域上に形成したゲート絶縁膜と、ゲート絶縁膜上に形成したゲート電極と、第1導電型のウェル領域内であって、ゲート電極の両端に形成した第2導電型のソース・ドレイン領域と、第1導電型のウェル領域内であって、ソース・ドレイン領域の間のゲート酸化膜下に形成した第2導電型の低濃度不純物領域と、第1導電型のウェル領域内であって、ソース・ドレイン領域の間の第2導電型の低濃度不純物領域の下に形成した第1導電型の低濃度不純物領域と、を有する事を特徴とするデプレッション型MOSトランジスタとした。
図1は、本発明の第1の実施例であるデプレッション型MOSトランジスタの模式断面図である。従来方法との違いは、チャネルとなるN型低濃度不純物領域の下層に新たに、Pウェル領域よりも高い濃度をもつP型低濃度不純物層をイオン注入法で形成していることである。このような構造にした場合、たとえ、N型低濃度不純物領域の深さが熱処理のばらつきにより大きくなった場合でも、N型低濃度不純物領域のすその部分はP型低濃度不純物層の表面側への拡散で相殺され、結果としてN型低濃度不純物領域とその下のP型領域の接合位置のばらつきが抑制され、それにより閾値電圧の変動も抑制される。
次に、素子形成領域のデプレッション型MOSトランジスタ形成領域にレジストをマスクにし、N型低濃度不純物領域形成のためのイオン注入を行う。条件は前述の通り、閾値電圧狙い値によって任意に選ぶ。(図6(b))
次に、同じレジストをマスクとしてP型低濃度不純物領域形成のためのイオン注入を行う。この条件も前述の通り、閾値ばらつき抑制のために任意の値を選ぶ。(図6(c))
次に、デプレッション型MOSトランジスタのゲート電極形成のためのポリシリコンの堆積・熱拡散やイオン注入などによる1×1019/cm2の濃度の不純物注入・ゲート電極のパターニングを行う。(図6(d))
次に、ソース・ドレインの形成を行い、半導体素子として完成させる。(図6(e))
以上述べたように、本方法は余分なマスク工程を必要とせず、1ステップのイオン注入工程の増加のみで作成できるので、プロセスコストの増大を伴うことなく閾値電圧の高精度化を実現させる事が出来る。
2 ソース・ドレイン領域
3 低濃度N型不純物領域
4 低濃度P型不純物領域
5 P型ウェル領域
6 N型ウェル領域
7 素子分離領域
8 ゲート電極
9 チャネル領域
10 ゲート酸化膜
11 第2の低濃度P型不純物領域
Claims (5)
- 半導体基板上の、第1導電型のウェル領域と、
前記第1導電型ウェル領域上に形成したゲート絶縁膜と、
前記ゲート絶縁膜上に形成したゲート電極と、
前記第1導電型のウェル領域内であって、前記ゲート電極の両端に形成した第2導電型のソース・ドレイン領域と、
前記第1導電型のウェル領域内であって、前記ソース・ドレイン領域の間の前記ゲート酸化膜下に形成した第2導電型の低濃度不純物領域と、
前記第1導電型のウェル領域内であって、前記ソース・ドレイン領域の間の前記第2導電型の低濃度不純物領域の下に形成した第1導電型の低濃度不純物領域と、
を有する事を特徴とするデプレッション型MOSトランジスタ。 - 前記第1導電型の低濃度不純物領域を前記ソース・ドレイン領域から離れて形成した事を特徴とする請求項1記載のデプレッション型MOSトランジスタ。
- 前記第1導電型の低濃度不純物領域と前記ソース・ドレイン領域との距離を0.5μmから1.5μmの間で離間させた事を特徴とする請求項2記載のデプレッション型MOSトランジスタ。
- 前記第1導電型の低濃度不純物領域のピーク濃度が5.0×1016/cm3から1.0×1018/cm3であることを特徴とする請求項1乃至3のいずれか1項に記載のデプレッション型MOSトランジスタ。
- 前記第2導電型の低濃度不純物領域のピーク濃度が1.0×1017/cm3から5.0×1018/cm3であることを特徴とする請求項4記載のデプレッション型MOSトランジスタ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010076366A JP2011210901A (ja) | 2010-03-29 | 2010-03-29 | デプレッション型mosトランジスタ |
TW100109362A TWI521702B (zh) | 2010-03-29 | 2011-03-18 | Often open the lack of type MOS transistor |
US13/065,674 US9013007B2 (en) | 2010-03-29 | 2011-03-28 | Semiconductor device having depletion type MOS transistor |
KR1020110027639A KR101781220B1 (ko) | 2010-03-29 | 2011-03-28 | 디프레션형 mos 트랜지스터를 갖는 반도체 장치 |
CN201110086411.3A CN102208445B (zh) | 2010-03-29 | 2011-03-29 | 具有耗尽型mos晶体管的半导体装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010076366A JP2011210901A (ja) | 2010-03-29 | 2010-03-29 | デプレッション型mosトランジスタ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011210901A true JP2011210901A (ja) | 2011-10-20 |
JP2011210901A5 JP2011210901A5 (ja) | 2013-02-28 |
Family
ID=44655390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010076366A Withdrawn JP2011210901A (ja) | 2010-03-29 | 2010-03-29 | デプレッション型mosトランジスタ |
Country Status (5)
Country | Link |
---|---|
US (1) | US9013007B2 (ja) |
JP (1) | JP2011210901A (ja) |
KR (1) | KR101781220B1 (ja) |
CN (1) | CN102208445B (ja) |
TW (1) | TWI521702B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018129536A (ja) * | 2013-06-20 | 2018-08-16 | ストレイティオ, インコーポレイテッドStratio, Inc. | Cmos画像センサ用のゲート制御型電荷変調デバイス |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6095927B2 (ja) * | 2012-09-27 | 2017-03-15 | エスアイアイ・セミコンダクタ株式会社 | 半導体集積回路装置 |
US9478571B1 (en) * | 2013-05-24 | 2016-10-25 | Mie Fujitsu Semiconductor Limited | Buried channel deeply depleted channel transistor |
US9559203B2 (en) * | 2013-07-15 | 2017-01-31 | Analog Devices, Inc. | Modular approach for reducing flicker noise of MOSFETs |
CN114551595B (zh) * | 2020-11-20 | 2023-10-31 | 苏州华太电子技术股份有限公司 | 应用于射频放大的沟道掺杂调制rfldmos器件及制法 |
JP2022108157A (ja) * | 2021-01-12 | 2022-07-25 | キオクシア株式会社 | 半導体装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4951879A (ja) * | 1972-09-20 | 1974-05-20 | ||
JPH0369167A (ja) * | 1989-08-08 | 1991-03-25 | Nec Corp | 埋め込み型pチャネルmosトランジスタ及びその製造方法 |
JPH09116154A (ja) * | 1995-10-10 | 1997-05-02 | Motorola Inc | 傾斜チャネル半導体素子およびその製造方法 |
JP2004079810A (ja) * | 2002-08-19 | 2004-03-11 | Fujitsu Ltd | 半導体装置およびその製造方法、cmos集積回路装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4212683A (en) * | 1978-03-27 | 1980-07-15 | Ncr Corporation | Method for making narrow channel FET |
US4575746A (en) * | 1983-11-28 | 1986-03-11 | Rca Corporation | Crossunders for high density SOS integrated circuits |
KR960008735B1 (en) * | 1993-04-29 | 1996-06-29 | Samsung Electronics Co Ltd | Mos transistor and the manufacturing method thereof |
KR100189964B1 (ko) * | 1994-05-16 | 1999-06-01 | 윤종용 | 고전압 트랜지스터 및 그 제조방법 |
JPH10135349A (ja) * | 1996-10-25 | 1998-05-22 | Ricoh Co Ltd | Cmos型半導体装置及びその製造方法 |
JP2001352057A (ja) * | 2000-06-09 | 2001-12-21 | Mitsubishi Electric Corp | 半導体装置、およびその製造方法 |
KR100343472B1 (ko) * | 2000-08-31 | 2002-07-18 | 박종섭 | 모스 트랜지스터의 제조방법 |
US6887758B2 (en) * | 2002-10-09 | 2005-05-03 | Freescale Semiconductor, Inc. | Non-volatile memory device and method for forming |
KR100540341B1 (ko) * | 2003-12-31 | 2006-01-11 | 동부아남반도체 주식회사 | 반도체 소자 제조방법 |
-
2010
- 2010-03-29 JP JP2010076366A patent/JP2011210901A/ja not_active Withdrawn
-
2011
- 2011-03-18 TW TW100109362A patent/TWI521702B/zh not_active IP Right Cessation
- 2011-03-28 KR KR1020110027639A patent/KR101781220B1/ko active IP Right Grant
- 2011-03-28 US US13/065,674 patent/US9013007B2/en not_active Expired - Fee Related
- 2011-03-29 CN CN201110086411.3A patent/CN102208445B/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4951879A (ja) * | 1972-09-20 | 1974-05-20 | ||
JPH0369167A (ja) * | 1989-08-08 | 1991-03-25 | Nec Corp | 埋め込み型pチャネルmosトランジスタ及びその製造方法 |
JPH09116154A (ja) * | 1995-10-10 | 1997-05-02 | Motorola Inc | 傾斜チャネル半導体素子およびその製造方法 |
JP2004079810A (ja) * | 2002-08-19 | 2004-03-11 | Fujitsu Ltd | 半導体装置およびその製造方法、cmos集積回路装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2018129536A (ja) * | 2013-06-20 | 2018-08-16 | ストレイティオ, インコーポレイテッドStratio, Inc. | Cmos画像センサ用のゲート制御型電荷変調デバイス |
Also Published As
Publication number | Publication date |
---|---|
CN102208445B (zh) | 2016-03-30 |
TWI521702B (zh) | 2016-02-11 |
KR101781220B1 (ko) | 2017-09-22 |
TW201203548A (en) | 2012-01-16 |
KR20110109948A (ko) | 2011-10-06 |
US9013007B2 (en) | 2015-04-21 |
US20110233669A1 (en) | 2011-09-29 |
CN102208445A (zh) | 2011-10-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6946705B2 (en) | Lateral short-channel DMOS, method of manufacturing the same, and semiconductor device | |
KR102068395B1 (ko) | 낮은 소스-드레인 저항을 갖는 반도체 소자 구조 및 그 제조 방법 | |
KR101245935B1 (ko) | 반도체 소자 및 그 제조방법 | |
KR101609880B1 (ko) | 반도체 장치 | |
JP2008535235A (ja) | 相補形非対称高電圧デバイス及びその製造方法 | |
KR101781220B1 (ko) | 디프레션형 mos 트랜지스터를 갖는 반도체 장치 | |
KR20070103311A (ko) | 반도체 장치 | |
US11063148B2 (en) | High voltage depletion mode MOS device with adjustable threshold voltage and manufacturing method thereof | |
KR20080025351A (ko) | 반도체 장치 및 그 제조 방법 | |
KR102255545B1 (ko) | 반도체 장치 및 반도체 장치의 제조 방법 | |
WO2016077803A1 (en) | Improving lateral bjt characteristics in bcd technology | |
US9947783B2 (en) | P-channel DEMOS device | |
KR20110078621A (ko) | 반도체 소자 및 그 제조 방법 | |
JP2011181709A (ja) | 半導体装置およびその製造方法 | |
US7358577B2 (en) | High voltage field effect transistor | |
KR102256226B1 (ko) | 낮은 소스-드레인 저항을 갖는 반도체 소자 및 그 제조 방법 | |
JP6346777B2 (ja) | 半導体装置の製造方法 | |
US20170263770A1 (en) | Semiconductor device and manufacturing method of the same | |
US9035381B2 (en) | Semiconductor device and method of fabricating the same | |
US9105721B2 (en) | Semiconductor device and manufacturing method thereof | |
TWI385802B (zh) | 高壓金氧半導體元件及其製作方法 | |
JPH02305443A (ja) | 半導体装置の製造方法 | |
KR20130073776A (ko) | 횡형 디모스 트랜지스터 및 이의 제조방법 | |
JP2012033841A (ja) | 半導体装置及びその製造方法 | |
KR101090049B1 (ko) | 반도체 디바이스 및 그의 제조 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20130116 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20130116 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20131108 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20131112 |
|
A761 | Written withdrawal of application |
Free format text: JAPANESE INTERMEDIATE CODE: A761 Effective date: 20140108 |