JP6132539B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 62
- 239000000758 substrate Substances 0.000 claims description 43
- 238000000926 separation method Methods 0.000 claims description 29
- 239000010410 layer Substances 0.000 description 76
- 101100464170 Candida albicans (strain SC5314 / ATCC MYA-2876) PIR1 gene Proteins 0.000 description 18
- 101001023705 Homo sapiens Nectin-4 Proteins 0.000 description 18
- 102100035486 Nectin-4 Human genes 0.000 description 18
- 101100231811 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) HSP150 gene Proteins 0.000 description 18
- 101100464174 Schizosaccharomyces pombe (strain 972 / ATCC 24843) pir2 gene Proteins 0.000 description 18
- 238000002955 isolation Methods 0.000 description 14
- 239000012535 impurity Substances 0.000 description 13
- 239000011229 interlayer Substances 0.000 description 11
- 101000881131 Homo sapiens RNA/RNP complex-1-interacting phosphatase Proteins 0.000 description 8
- 102100037566 RNA/RNP complex-1-interacting phosphatase Human genes 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 101100464175 Candida albicans (strain SC5314 / ATCC MYA-2876) PIR32 gene Proteins 0.000 description 6
- 101150045321 PIR3 gene Proteins 0.000 description 6
- 101150043288 PIR5 gene Proteins 0.000 description 6
- 101100060070 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) CIS3 gene Proteins 0.000 description 6
- 101100489717 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND2 gene Proteins 0.000 description 6
- 239000002344 surface layer Substances 0.000 description 6
- 101100489713 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GND1 gene Proteins 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003071 parasitic effect Effects 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 230000005684 electric field Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Description
その他の課題と新規な特徴は、本明細書の記述及び添付図面から明らかになるであろう。
図1は、第1の実施形態に係る半導体装置SDの構成を示す平面図である。半導体装置SDは、第1回路HVR、ダイオードFID、及び電位分離素子VIUを備えている。これらはいずれも同一の基板SUB(本図では省略)に形成されている。第1回路HVRは、電源電位が第1電圧である。ダイオードFIDは、アノード電極INC1に第1電圧よりも低い第2電圧が印加される。電位分離素子VIUは、平面視でダイオードFIDとは異なる場所に位置し、ダイオードFIDのカソード電極CEを第1回路HVRの電源配線に接続する。具体的には、電位分離素子VIUは、配線INC2及び配線INC3を介して、ダイオードFIDのカソード電極CEに接続している。
図10は、第2の実施形態に係る半導体装置SDの構成を示す断面図であり、第1の実施形態における図4に対応している。図11は、図10の半導体装置SDのうち電位分離素子VIUとなる領域を拡大した図である。本実施形態に係る半導体装置SDは、第1のP型領域PIR2が張出領域BPIR2を有している点を除いて、第1の実施形態に係る半導体装置SDと同様の構成である。
これらの図を比較してわかるように、第2の実施形態に係る電位分離素子VIUのほうが第1のP型領域PIR2の電位は十分に下がる。
図14は、第3の実施形態に係る半導体装置SDの構成を示す断面図であり、第1の実施形態における図4に対応している。図15は、図11の半導体装置SDのうち電位分離素子VIUとなる領域を拡大した図である。本実施形態に係る半導体装置SDは、以下の点を除いて第1の実施形態に係る半導体装置SDと同様の構成である。
図17は、第4の実施形態に係る半導体装置SDが有するダイオードFIDの構成を示す断面図である。本実施形態に係る半導体装置SDは、ダイオードFIDの構成を除いて、第1〜第3の実施形態に係る半導体装置SDのいずれかと同様の構成である。本実施形態に係るダイオードFIDは、以下の点を除いて、第1の実施形態に示したダイオードFIDと同様の構成である。
BPIR2 張出領域
CE カソード電極
CR n型領域
EI 素子分離膜
EP n型エピタキシャル層
FID ダイオード
FPE1 フィールドプレート電極
FPE2 フィールドプレート電極
GE1 ゲート電極
GE2 ゲート電極
GE3 ゲート電極
GINS ゲート絶縁膜
GND1 接地配線
GND2 接地配線
HNIR1 第1の高濃度N型領域
HNIR2 第2の高濃度N型領域
HNIR3 第3の高濃度N型領域
HNIR4 第4の高濃度N型領域
HPIR1 第1のP型高濃度領域
HPIR2 第2の高濃度P型領域
HPIR3 第3の高濃度P型領域
HPIR4 第4の高濃度P型領域
HVR 第1回路
INC1 アノード電極
INC2 配線
INC3 配線
INC4 配線
INSL1 層間絶縁膜
INSL2 層間絶縁膜
LNIR n型低濃度領域
LST レベルシフト素子
LVR 第2回路
NIR n型領域
PIR1 P型層
PIR2 第1のP型領域
PIR3 第2のP型領域
PIR4 p型領域
PIR5 第3のP型領域
RES 抵抗
PR1 レジストパターン
PR2 レジストパターン
SD 半導体装置
SUB 基板
VB 電源配線
VIU 電位分離素子
VNR N型埋込層
Vcc 電源配線
ZD ツェナーダイオード
Claims (8)
- 基板と、
前記基板に形成され、電源電位が第1電圧である第1回路と、
前記基板に形成され、アノードに前記第1電圧よりも低い第2電圧が印加されるダイオードと、
前記基板に形成され、平面視で前記ダイオードとは異なる場所に位置し、前記ダイオードのカソードを前記第1回路の電源配線に接続する電位分離素子と、
を備え、
前記電位分離素子は、
第1導電型層と、
前記第1導電型層上に形成された第2導電型低濃度領域と、
前記第2導電型低濃度領域内に位置し、前記ダイオードの前記カソードに接続する第1の第2導電型高濃度領域と、
前記第2導電型低濃度領域内に位置し、前記第1の第2導電型高濃度領域から離間して配置され、前記第1回路の前記電源配線に接続する第2の第2導電型高濃度領域と、
前記第2導電型低濃度領域に形成され、底部が前記第1導電型層に接続し、接地電位が印加されており、かつ前記第1の第2導電型高濃度領域の隣に位置する第1の第1導電型領域と、
を備え、
前記第2導電型低濃度領域に形成され、底部が前記第1導電型層に接続し、前記第2の第2導電型高濃度領域の隣に位置する第2の第1導電型領域を備える半導体装置。 - 請求項1に記載の半導体装置において、
前記第1の第1導電型領域は、下部が前記第1の第2導電型高濃度領域の下方に向けて張り出している半導体装置。 - 請求項2に記載の半導体装置において、
平面視において、前記第1の第1導電型領域の下部は、前記第1の第2導電型高濃度領域の少なくとも一部と重なっている半導体装置。 - 請求項3に記載の半導体装置において、
平面視において、前記第1の第1導電型領域の下部は、前記第1の第2導電型高濃度領域の全体と重なっている半導体装置。 - 請求項1に記載の半導体装置において、
前記第2導電型低濃度領域に形成され、平面視で前記第1の第2導電型高濃度領域と前記第2の第2導電型高濃度領域の間に位置し、前記第2導電型低濃度領域よりも浅い第3の第1導電型領域を備える半導体装置。 - 請求項1に記載の半導体装置において、
前記電位分離素子は、前記第1回路を取り囲んでいる半導体装置。 - 請求項1に記載の半導体装置において、
前記ダイオードの前記カソードは第2導電型である半導体装置。 - 基板と、
前記基板に形成され、電源電位が第1電圧である第1回路と、
前記基板に形成され、アノードに前記第1電圧よりも低い第2電圧が印加されるダイオードと、
前記基板に形成され、平面視で前記ダイオードとは異なる場所に位置し、前記ダイオードのカソードを前記第1回路の電源配線に接続する電位分離素子と、
を備え、
前記電位分離素子は、
第1導電型層と、
前記第1導電型層上に形成された第2導電型低濃度領域と、
前記第2導電型低濃度領域内に位置し、前記ダイオードの前記カソードに接続する第1の第2導電型高濃度領域と、
前記第2導電型低濃度領域内に位置し、前記第1の第2導電型高濃度領域から離間して配置され、前記第1回路の前記電源配線に接続する第2の第2導電型高濃度領域と、
前記第2導電型低濃度領域に形成され、底部が前記第1導電型層に接続し、接地電位が印加されており、かつ前記第1の第2導電型高濃度領域の隣に位置する第1の第1導電型領域と、
を備え、
前記第2導電型低濃度領域に形成され、底部が前記第1導電型層に接続し、接地電位が印加されており、かつ前記ダイオードを囲む第4の第1導電型領域を備え、
前記第1の第1導電型領域は、第1領域を含み、
前記第4の第1導電型領域は、第2領域を含み、
前記第1の第2導電型高濃度領域は、第3領域を含み、
前記第1の第1導電型領域の前記第1領域は、平面視で前記第4の第1導電型領域の前記第2領域と前記第1の第2導電型高濃度領域の前記第3領域の間に位置している半導体装置。
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JP2012272858A JP6132539B2 (ja) | 2012-12-13 | 2012-12-13 | 半導体装置 |
US14/095,304 US8952483B2 (en) | 2012-12-13 | 2013-12-03 | Semiconductor device |
CN201310684070.9A CN103872052B (zh) | 2012-12-13 | 2013-12-13 | 半导体器件 |
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JP2012272858A JP6132539B2 (ja) | 2012-12-13 | 2012-12-13 | 半導体装置 |
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JP2014120534A JP2014120534A (ja) | 2014-06-30 |
JP6132539B2 true JP6132539B2 (ja) | 2017-05-24 |
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CN106941122B (zh) * | 2016-01-04 | 2019-07-12 | 世界先进积体电路股份有限公司 | 半导体装置及其制造方法 |
US9666699B1 (en) * | 2016-03-30 | 2017-05-30 | Vanguard International Semiconductor Corporation | Semiconductor device having field plate disposed on isolation feature and method for forming the same |
WO2022230093A1 (ja) * | 2021-04-28 | 2022-11-03 | サンケン電気株式会社 | 半導体装置 |
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US7834421B2 (en) * | 2002-08-14 | 2010-11-16 | Advanced Analogic Technologies, Inc. | Isolated diode |
US7667268B2 (en) * | 2002-08-14 | 2010-02-23 | Advanced Analogic Technologies, Inc. | Isolated transistor |
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US7795681B2 (en) * | 2007-03-28 | 2010-09-14 | Advanced Analogic Technologies, Inc. | Isolated lateral MOSFET in epi-less substrate |
JP4797203B2 (ja) * | 2008-12-17 | 2011-10-19 | 三菱電機株式会社 | 半導体装置 |
JP5503897B2 (ja) * | 2009-05-08 | 2014-05-28 | 三菱電機株式会社 | 半導体装置 |
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