JP6673806B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6673806B2 JP6673806B2 JP2016222054A JP2016222054A JP6673806B2 JP 6673806 B2 JP6673806 B2 JP 6673806B2 JP 2016222054 A JP2016222054 A JP 2016222054A JP 2016222054 A JP2016222054 A JP 2016222054A JP 6673806 B2 JP6673806 B2 JP 6673806B2
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Automation & Control Theory (AREA)
- Radar, Positioning & Navigation (AREA)
- General Engineering & Computer Science (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Thin Film Transistor (AREA)
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Description
<関連技術の説明>
図1は、関連技術における半導体装置の平面図である。図2は、図1のA−A線およびB−B線に沿う断面図である。A−A線に沿う断面図をAA領域に、B−B線に沿う断面図をBB領域に示している。
本実施の形態1の半導体装置は、上記関連技術の半導体装置と比較して、n型タップ領域NTAPRにエピタキシャル層EPが設けられていない点が相違しており、その他は同様である。従って、上記関連技術の半導体装置の説明は、本実施の形態1の半導体装置の説明として流用することができ、重複する説明は省略する。
本実施の形態1の半導体装置の製造工程を、図面を参照して説明する。図6〜図18は、本実施の形態1である半導体装置の製造工程中の断面図である。図6〜図18は、図5に示したCC領域、DD領域、EE領域およびFF領域に対応している。
n型タップ領域NTAPRにおいて、n型ウェル領域NW1(言い換えると、半導体基板SB)の主面上にエピタキシャル層EPを形成していない。つまり、n型タップ領域NTAPRの活性領域ACTNTにおけるシリサイド層SLの下面は、p型MISFETQp1の形成領域である活性領域ACTP1における絶縁層BXの下面よりもd1だけ低い(半導体基板SBの裏面に近い)という特徴を有する。この特徴により、n型タップ領域NTAPRに近接するp型MISFETQp1のゲート電極G1またはG2と、n型ウェル領域NW1との短絡または耐圧劣化を防止することができる。
本実施の形態2は、実施の形態1の変形例であり、実施の形態1と異なる部分について説明する。図19は、本実施の形態2の半導体装置の平面図である。図20は、図19のB部の詳細平面図である。図21は、図20のG−G線、H−H線、I−I線、J−J線、K−K線、および、L−L線に沿う断面図である。図21では、図20のG−G線に沿う断面図をGG領域に、H−H線に沿う断面図をHH領域に、I−I線に沿う断面図をII領域に、J−J線に沿う断面図をJJ領域に、K−K線に沿う断面図をKK領域に、L−L線に沿う断面図をLL領域に、示している。図22は、本実施の形態2の半導体装置の製造工程中の断面図である。図22は、図21のGG領域、HH領域、II領域、JJ領域、KK領域、および、LL領域に対応している。
図23は、本実施の形態3の半導体装置の平面図である。
図24は、本実施の形態4の半導体装置の平面図であり、上記実施の形態2の変形例である。
ACTN1,ACTN2,ACTP1,ACTP2,ACTNT,ACTNT1,
ACTPT,ACTNT1 活性領域
BX 絶縁層
CP キャップ絶縁膜
DP1 イオン注入用不純物
DT 窪み
EP エピタキシャル層
EXN n−型半導体領域
EXP p−型半導体領域
G1,G2 ゲート電極
GF ゲート絶縁膜
GN 半導体領域
GP 半導体領域
IL1,IL2 絶縁膜
M1、M2 配線
NMOS0,NMOS1,NMOS2,NMOS3 NMOS領域
NTAP,NTAP1 n型タップ
NTAPR,NTAPR1 n型タップ領域
NW1,NW2 n型ウェル領域
OP1 開口
PG プラグ電極
PMOS1,PMOS2,PMOS3,PMOS4 PMOS領域
PTAP,PTAP1 p型タップ
PTAPR,PTAPR1 p型タップ領域
PR1,PR2,PR3,PR4,PR5,PR6 フォトレジスト層
PW1,PW2 p型ウェル領域
Qn1,Qn2 n型MISFET
Qp1,Qp2 p型MISFET
SB 半導体基板
SDN n+型半導体領域
SDP p+型半導体領域
SL シリサイド層
SM 半導体層
STI 素子分離領域
SW1,SW2 サイドウォールスペーサ
SZ1,SZ2,SZ3 絶縁膜
TR 溝
VDD 電源電位配線
VDDR 電源電位配線領域
VSS 基準電位配線
VSSR 基準電位配線領域
ZM1,ZM2,ZM3 絶縁膜
Claims (17)
- 主面と裏面とを有する半導体基板と、
前記半導体基板の前記主面に形成された第1導電型の第1半導体領域と、
前記第1半導体領域内において、周囲を素子分離領域で規定された第1活性領域および第2活性領域と、
前記第1活性領域内において、前記半導体基板の主面上に、第1絶縁膜を介して形成された第1半導体層と、
前記第1半導体層の表面に第1ゲート絶縁膜を介して形成された第1ゲート電極と、
前記第1ゲート電極の側壁上に形成された第1サイドウォールスペーサと、
前記第1ゲート電極の両端において、前記第1半導体層上に形成された第1エピタキシャル層と、
前記第1ゲート電極の両端において、前記第1半導体層と前記第1エピタキシャル層とに形成された前記第1導電型とは反対導電型である第2導電型の第2半導体領域および第3半導体領域と、
前記第1活性領域内において、前記第1絶縁膜の下に形成された前記第1導電型の第4半導体領域と、
前記第2活性領域において、前記第1半導体領域の表面に形成された第1シリサイド層と、
前記第1ゲート電極を覆う層間絶縁膜と、
前記層間絶縁膜上に形成された第1電源配線と、
を有し、
平面視にて、前記第2活性領域は、第1方向に延在し、
平面視にて、前記第1電源配線は、前記第2活性領域と重なって、前記第1方向に延在し、
前記第1電源配線は、前記第2半導体領域に接続されており、
前記第1ゲート電極は、前記第1方向に直交する第2方向に延在し、前記第1活性領域と前記第2活性領域との間の前記素子分離領域に乗り上げている、半導体装置。 - 請求項1記載の半導体装置において、
前記第1シリサイド層は、前記第1電源配線に接続されている、半導体装置。 - 請求項1記載の半導体装置において、
前記第1シリサイド層と前記第1半導体領域との界面は、前記第1絶縁膜と前記第4半導体領域との界面よりも、前記半導体基板の前記裏面に近い、半導体装置。 - 請求項1記載の半導体装置において、
さらに、
前記第1半導体層内であって、前記第1サイドウォールスペーサの下部に形成された前記第2導電型の第5半導体領域を有する、半導体装置。 - 請求項4記載の半導体装置において、
前記第2半導体領域および前記第3半導体領域の不純物濃度は、前記第5半導体領域の不純物濃度よりも高い、半導体装置。 - 請求項1記載の半導体装置において、
前記第1導電型は、N型であり、前記第2導電型は、P型である、半導体装置。 - 請求項1記載の半導体装置において、
さらに、
前記半導体基板の前記主面に形成された前記第2導電型の第6半導体領域と、
前記第6半導体領域内において、周囲を前記素子分離領域で規定された第3活性領域および第4活性領域と、
前記第3活性領域内において、前記半導体基板の主面上に、第2絶縁膜を介して形成された第2半導体層と、
前記第2半導体層の表面に第2ゲート絶縁膜を介して形成された第2ゲート電極と、
前記第2ゲート電極の側壁上に形成された第2サイドウォールスペーサと、
前記第2ゲート電極の両端において、前記第2半導体層上に形成された第2エピタキシャル層と、
前記第2ゲート電極の両端において、前記第2半導体層と前記第2エピタキシャル層とに形成された前記第1導電型の第7半導体領域および第8半導体領域と、
前記第3活性領域内において、前記第2絶縁膜の下に形成された前記第2導電型の第9半導体領域と、
前記第4活性領域において、前記第6半導体領域上に形成された第3エピタキシャル層と、
前記第3エピタキシャル層の表面に形成された第2シリサイド層と、
前記第2ゲート電極を覆う前記層間絶縁膜と、
前記層間絶縁膜上に形成された第2電源配線と、
を有し、
平面視にて、前記第4活性領域は、前記第1方向に延在し、
平面視にて、前記第2電源配線は、前記第4活性領域と重なって、前記第1方向に延在し、
前記第2電源配線は、前記第7半導体領域に接続されており、
前記第2ゲート電極は、前記第2方向に延在し、前記第3活性領域と前記第4活性領域との間の前記素子分離領域に乗り上げている、半導体装置。 - 請求項7記載の半導体装置において、
前記第2シリサイド層は、前記第2電源配線に接続されている、半導体装置。 - 請求項7記載の半導体装置において、
前記第2シリサイド層と前記第3エピタキシャル層との界面は、前記第2絶縁膜と前記第9半導体領域との界面よりも、前記半導体基板の前記裏面から離れている、半導体装置。 - 請求項7記載の半導体装置において、
平面視にて、前記第1活性領域と前記第3活性領域とは、前記第2方向に配列されており、前記第1方向に延在する前記第2活性領域と前記第4活性領域とに挟まれている、半導体装置。 - 主面と裏面とを有する半導体基板と、
前記半導体基板の前記主面に形成された第1導電型の第1半導体領域と、
前記第1半導体領域内において、周囲を素子分離領域で規定された第1活性領域、第2活性領域、第5活性領域および第6活性領域と、
前記第1活性領域内において、前記半導体基板の主面上に、第1絶縁膜を介して形成された第1半導体層と、
前記第1半導体層の表面に第1ゲート絶縁膜を介して形成された第1ゲート電極と、
前記第1ゲート電極の側壁上に形成された第1サイドウォールスペーサと、
前記第1ゲート電極の両端において、前記第1半導体層上に形成された第1エピタキシャル層と、
前記第1ゲート電極の両端において、前記第1半導体層と前記第1エピタキシャル層とに形成された前記第1導電型とは反対導電型である第2導電型の第2半導体領域および第3半導体領域と、
前記第1活性領域内において、前記第1絶縁膜の下に形成された前記第1導電型の第4半導体領域と、
前記第2活性領域において、前記第1半導体領域の表面に形成された第2エピタキシャル層と、
前記第2エピタキシャル層の表面に形成された第1シリサイド層と、
前記第5活性領域内において、前記半導体基板の主面上に、第3絶縁膜を介して形成された第3半導体層と、
前記第3半導体層の表面に第3ゲート絶縁膜を介して形成された第3ゲート電極と、
前記第3ゲート電極の側壁上に形成された第3サイドウォールスペーサと、
前記第3ゲート電極の両端において、前記第3半導体層上に形成された第5エピタキシャル層と、
前記第3ゲート電極の両端において、前記第3半導体層と前記第5エピタキシャル層とに形成された前記第2導電型の第9半導体領域および第10半導体領域と、
前記第5活性領域内において、前記第3絶縁膜の下に形成された前記第1導電型の第11半導体領域と、
前記第6活性領域において、前記第1半導体領域の表面に形成された第6エピタキシャル層と、
前記第6エピタキシャル層の表面に形成された第3シリサイド層と、
前記第1ゲート電極および前記第3ゲート電極のそれぞれを覆う層間絶縁膜と、
前記層間絶縁膜上に形成された第1電源配線と、
を有し、
平面視にて、前記第1電源配線は、第1方向に延在し、
前記第1電源配線は、前記第2半導体領域、前記第10半導体領域、前記第1シリサイド層および前記第3シリサイド層に接続されており、
平面視にて、前記第1活性領域と前記第2活性領域とは、前記第1方向に配列され、
平面視にて、前記第5活性領域と前記第6活性領域とは、前記第1方向に配列され、
前記第1ゲート電極および前記第3ゲート電極のそれぞれは、前記第1方向に直交する第2方向に延在しており、
平面視における前記第2方向において、前記第2活性領域と前記第6活性領域とは、前記素子分離領域によって分離されている、半導体装置。 - 請求項11記載の半導体装置において、
前記第1シリサイド層と前記第2エピタキシャル層との界面は、前記第1絶縁膜と前記第4半導体領域との界面よりも、前記半導体基板の前記裏面から離れている、半導体装置。 - 請求項11記載の半導体装置において、
さらに、
前記第1半導体層内であって、前記第1サイドウォールスペーサの下部に形成された前記第2導電型の第5半導体領域を有する、半導体装置。 - 請求項13記載の半導体装置において、
前記第2半導体領域および前記第3半導体領域の不純物濃度は、前記第5半導体領域の不純物濃度よりも高い、半導体装置。 - 請求項11記載の半導体装置において、
さらに、
前記半導体基板の前記主面に形成された前記第2導電型の第6半導体領域と、
前記第6半導体領域内において、周囲を前記素子分離領域で規定された第3活性領域および第4活性領域と、
前記第3活性領域内において、前記半導体基板の主面上に、第2絶縁膜を介して形成された第2半導体層と、
前記第2半導体層の表面に第2ゲート絶縁膜を介して形成された第2ゲート電極と、
前記第2ゲート電極の側壁上に形成された第2サイドウォールスペーサと、
前記第2ゲート電極の両端において、前記第2半導体層上に形成された第3エピタキシャル層と、
前記第2ゲート電極の両端において、前記第2半導体層と前記第3エピタキシャル層とに形成された前記第1導電型の第7半導体領域および第8半導体領域と、
前記第3活性領域内において、前記第2絶縁膜の下に形成された前記第2導電型の第9半導体領域と、
前記第4活性領域において、前記第6半導体領域上に形成された第4エピタキシャル層と、
前記第4エピタキシャル層の表面に形成された第2シリサイド層と、
前記第2ゲート電極を覆う前記層間絶縁膜と、
前記層間絶縁膜上に形成された第2電源配線と、
を有し、
平面視にて、前記第2電源配線は、前記第1方向に延在し、
前記第2電源配線は、前記第7半導体領域に接続されており、
平面視にて、前記第3活性領域と前記第4活性領域とは、前記第1方向に配列され、
前記第2ゲート電極は、前記第2方向に延在している、半導体装置。 - 請求項15記載の半導体装置において、
前記第2シリサイド層は、前記第2電源配線に接続されている、半導体装置。 - 請求項15記載の半導体装置において、
平面視にて、前記第1活性領域と前記第3活性領域とは、前記第2方向に配列されており、前記第1方向に延在する前記第1電源配線と前記第2電源配線とに挟まれており、
平面視にて、前記第2活性領域と前記第4活性領域とは、前記第2方向に配列されており、前記第1方向に延在する前記第1電源配線と前記第2電源配線とに挟まれている、半導体装置。
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-
2016
- 2016-11-15 JP JP2016222054A patent/JP6673806B2/ja active Active
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2017
- 2017-09-30 US US15/721,901 patent/US10340291B2/en active Active
- 2017-10-10 EP EP17195589.1A patent/EP3321963A3/en not_active Withdrawn
- 2017-10-13 CN CN201710953651.6A patent/CN108074925B/zh active Active
- 2017-10-16 KR KR1020170134069A patent/KR20180054431A/ko not_active Application Discontinuation
- 2017-10-26 TW TW106136837A patent/TWI730189B/zh active
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EP3321963A3 (en) | 2018-08-15 |
EP3321963A2 (en) | 2018-05-16 |
CN108074925B (zh) | 2023-05-05 |
JP2018081978A (ja) | 2018-05-24 |
CN108074925A (zh) | 2018-05-25 |
US20180138204A1 (en) | 2018-05-17 |
US10340291B2 (en) | 2019-07-02 |
TW201834201A (zh) | 2018-09-16 |
KR20180054431A (ko) | 2018-05-24 |
TWI730189B (zh) | 2021-06-11 |
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