TW520548B - Shallow trench isolation filled with thermal oxide - Google Patents

Shallow trench isolation filled with thermal oxide Download PDF

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Publication number
TW520548B
TW520548B TW088107569A TW88107569A TW520548B TW 520548 B TW520548 B TW 520548B TW 088107569 A TW088107569 A TW 088107569A TW 88107569 A TW88107569 A TW 88107569A TW 520548 B TW520548 B TW 520548B
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Taiwan
Prior art keywords
trench
shaped
isolation
region
silicon
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TW088107569A
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English (en)
Inventor
Yu Sun
Angela T Hui
Yue-Song He
Tatsuya Kajita
Mark S Chang
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Advanced Micro Devices Inc
Fujitsu Ltd
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Publication of TW520548B publication Critical patent/TW520548B/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/71Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/76Making of isolation regions between components
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/71Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/76Making of isolation regions between components
    • H01L21/762Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
    • H01L21/76202Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using a local oxidation of silicon, e.g. LOCOS, SWAMI, SILO
    • H01L21/76205Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using a local oxidation of silicon, e.g. LOCOS, SWAMI, SILO in a region being recessed from the surface, e.g. in a recess, groove, tub or trench region
    • H01L21/7621Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using a local oxidation of silicon, e.g. LOCOS, SWAMI, SILO in a region being recessed from the surface, e.g. in a recess, groove, tub or trench region the recessed region having a shape other than rectangular, e.g. rounded or oblique shape
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/71Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/76Making of isolation regions between components
    • H01L21/762Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
    • H01L21/76224Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
    • H01L21/76232Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials of trenches having a shape other than rectangular or V-shape, e.g. rounded corners, oblique or rounded trench walls

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Element Separation (AREA)

Description

520548
[技術領域] 本發明係關於積 ^ ^ (FOX) ^ ^ t ^ ^ % 〇 體電路基片上形成淺溝隔離(STI)區之製丄技術如於在積 L發明之背景] 製造半導體裝置之方法所包含之 j介電材料之隔離區,…材料提供確保形:電;y 包路5又什之適當功能的所須保護。此方法包括矽域 化作用(_。此方法一般開始是在二氧切層 ,層)上沉積氮化石夕層厚度達U5㈣至範圍。j 疋用低壓化學氣相沉積(LPCVD)技術來沉積氮化 ^ ,包括了任何適當之在卫業上已知之可買到的 材料後 光阻罩層沉積在氮切層上。然後在光阻罩層上繪^^ 形成隔離渠溝。用蝕刻方式’將隔離渠溝區 氧 化石夕層和氮切層和光阻層之m說來 成渠溝區,基片之上表面經小量地蝕刻,大約為…" 0.25 。由使用四乙基原矽酸脂(TE〇s)作為沉積二 矽之源材,而沉積二氧化矽之厚墊,形成在隔離區上 化層。氧化墊之厚度,亦稱之為場氧化層(F〇x)墊 广 圍是在1.2#m至1.5/zm之間。此方法更進一步包括磨 成之隔離墊至表面水準,而厚度大致同高於氮化矽 / 用濕蝕刻移除接續形成之氮化矽氧化墊和二氧化矽芦=: 以露出用來形成各種的積體.路組件之活動區。濕^ 般是先用熱磷酸蝕刻氮化矽層,然後將基片浸泡在氫氟酸

Claims (1)

  1. 520548ft 案號 88107569 六、1. 修正
    2. 3. 4· 申請專利範圍 一種半導體裝置,該裝置包括: 半導體基片構件; 至少一對形成在該半導體構件上之間隔開之第一 介電材料墊,在該間隔開之介電材料之間之區域劃出 半導體基片區用來形成隔離渠溝區; 傾斜之第二介電材料製成的間隔器構件,鄰接各 該間隔開之第一介電材料墊而形成;和 V形隔離渠溝區,製成該半導體基片構件内,該V 形隔離渠溝區製成在該等間隔開之第一介電墊和個別 之鄰接間隔器構件之間,該V形隔離渠溝區包括具有與 該等第一介電墊分離一段距離之上端部之V形渠溝構 造,該分離之一段距離依照該間隔器構件之材料厚度 而改變,和下端部延伸一預定之距離進入該半導體基 片中。 如申請專利範圍第1項所述之半導體裝置,其中: 該至少一對間隔開之第一介電材料墊包括由氮化 砍製成,和 該傾斜的第二介電材料之間隔器構件包括藉由熱 氧化物製造方法而製成之二氧化矽所製成。 如申請專利範圍第1項所述之半導體裝置,其中: 該上端部包括開口,測量為0. 2 // hi,和下端部測 量實質為小於〇. 2 // m。 如申請專利範圍第3項所述之半導體裝置,其中·· 該半導體基片包括碎材料,和
    91531.ptc 第1頁 2002.09.21.013 520548 案號 88107569 Λ 六 5· 6 · 7 、申請專利範圍 ^^^一 該裝置尚包括在該ν渠溝區之實質部份 由熱氧 化物方法而生長的第一二氧化矽材料。 如申請專利範圍第4項所述之半導體裝置,其中· 該裝置尚包括第二二氧化矽材料,沉 形渠 溝區之該上端部。 ^ i ^ 一種半導體裝置,該裝置包括·· 半導體基片構件; 至少一對形成在該半導體構件上之間隔開之氮化 石夕塾’在該間隔開之氮化石夕墊之間之區域劃出半導體 基片區用來形成隔離渠溝區; 傾斜之氧化矽間隔器構件,鄰接各該間隔氮 化矽墊而形成; v形隔離渠溝區,製成該半導體基片構件内,該ν 形隔離渠溝區製成在該等間隔開之氮化矽墊和個別鄰 接之氧化間隔器構件之間,該V形隔離渠溝區包括具 與該等氮化矽墊分離一段距離之上端部之V形渠溝^ 造,該分離之一段距離依照該間隔器構件之材料厚产 而改變,和下端部延伸一預定之距離進入該 二= 片中;和 子m暴 渠溝隔離材料,包括二氧化矽,生長在該V 區之實質部份内。 7未屢 如申請專利範圍第6項所述之半導體裝置,其中·· 該上端部包括開口,測量為0· 2从m,而下端· 量為實質小於0.2"m;和 h 91531.ptc 第2頁 20〇2.09.21.014 520548 六 1 號 88107569 — Μ >0 η —修正 8· 9· 、申請專利範圍 該渠溝隔離材料從相對側壁構造 形渠溝構造。 並填埋該V 如申請專利範圍第6項所述之半導體裝置, 該裝置尚包括第二二氧化矽材料,由其與中+ : 積方法而沉積在該V形渠溝區之該上端部 予翁氧沉 一種產製至少一個淺溝隔離之方法, 各步驟: ’包括下列 (a) 提供製有阻障氧化層之半導 (b) 在該阻障氧化層上形成 ^ f件·, 電介質墊; 夕對間隔開之第— (c) 在該第一電介質墊上和於該第_ 區域的該阻障氧化層上形成二氧化矽層 介質墊之間的該等區域包括形成該至& 之區域; (d) 在該二氧化矽層上形成多晶矽層, 於刻劃形成該至少一個淺溝隔離之該區域厂夕晶矽層 渠溝並提供第一緩衝區域,該第一緩衝區域$第 物和鄰接該至少一對間隔開之第一電介匕括氧化 材料; 势之多晶矽 (e) 在形成該至少一個淺溝隔離之該區 矽蝕刻處理而形成較寬的第二U形渠溝,該L由多晶 溝具有傾斜的侧壁,此侧壁形成第二緩衝材〜U形渠 第二緩衝材料區包括氧化物和多晶矽材料2區,誘 和 新尖量· 電介質墊之間 ’該各第一電 -個淺溝隔離
    520548 _案號88107569_4 (年 3月 曰 修正_ 六、申請專利範圍 (〇形成V形隔離渠溝區進入該半導體基片構件 内,該V形隔離渠溝區由蝕刻包括該第二U形渠溝之側 壁之多晶矽材料而製成,由蝕穿該阻障氧化層並進入 該半導體基片達一預令深度。 1 0 .如申請專利範圍第9項所述之產製淺溝隔離之方法,其 中·· 該步驟(f )包括形成具有該氮化矽墊之鄰接相對之 氧化材料之改變厚度的相對隔離件,該等隔離件包括 該V形隔離渠溝區之上端側壁部。 1 1.如申請專利範圍第9項所述之產製淺溝隔離之方法,該 方法尚包括下列步驟: 生長渠溝隔離材料在該V形渠溝區之實質部份内, 該渠溝隔離材料包括二氧化矽。 1 2.如申請專利範圍第1 1項所述之產製淺溝隔離之方法, 該方法尚包括下列步驟: 由化學蒸氣沉積方法,沉積二氧化矽材料於該V形 渠溝區之上端部。 1 3. —種產製至少一個淺溝隔離之方法,該方法包括下列 各步驟: (a) 提供製有阻障氧化層之半導體基片構件; (b) 在該阻障氧化層上形成至少一對間隔開之第一 電介質墊; (c) 在該第一電介質墊上和於該第一電介質墊之間 區域的該阻障氧化層上形成二氧化矽層,該各第一電
    91531.ptc 第4頁 2002.09.21.016 520548 _案號88107569_年9月,曰 修正_ 六、申請專利範圍 介質墊之該等區域包括形成該至少一個淺溝隔離之區 域; (d )在該二氧化矽層上形成多晶矽層,該多晶矽層 於刻劃形成該至少一個淺溝隔離之該區域形成第一 U形 渠溝並提供第一緩衝區域,該第一緩衝區域包括氧化 物和鄰接該至少一對間隔開之第一電介質墊之多晶矽 材料, (e)在形成該至少一個淺溝隔離之該區域,由多晶 矽蝕刻處理而形成較寬的第二U形渠溝,該第二U形渠 溝具有傾斜的側壁,此側壁形成第二緩衝材料區,該 第二緩衝材料區包括氧化物和多晶矽材料之漸尖量; (f )形成V形隔離渠溝區進入該半導體基片構件 内,該V形隔離渠溝區由蝕刻包括該第二U形渠溝之側 壁之多晶矽材料而製成,由蝕穿該阻障氧化層並進入 該半導體基片達一預令深度;和 (g)生長渠溝隔離材料,包括生長在該V形隔離渠 溝區之實質部分内之第一熱氧化物。 1 4.如申請專利範圍第11項所述之產製淺溝隔離之方法, 該方法尚包括下列步驟: 由化學蒸氣沉積方法,沉積二氧化矽材料於該V形 渠溝區之上端部。
    91531.ptc 2002. 09.21.017 第5頁
TW088107569A 1998-05-20 1999-05-11 Shallow trench isolation filled with thermal oxide TW520548B (en)

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US7416956B2 (en) * 2004-11-23 2008-08-26 Sandisk Corporation Self-aligned trench filling for narrow gap isolation regions
US20060240660A1 (en) * 2005-04-20 2006-10-26 Jin-Sheng Yang Semiconductor stucture and method of manufacturing the same
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US20080160680A1 (en) * 2006-12-28 2008-07-03 Yuan Jack H Methods of fabricating shield plates for reduced field coupling in nonvolatile memory
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CN110416089B (zh) * 2019-07-31 2023-02-03 上海华虹宏力半导体制造有限公司 一种ldmos的制备方法

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KR19990088449A (ko) 1999-12-27
KR100675962B1 (ko) 2007-02-01
US6232646B1 (en) 2001-05-15
JP3703069B2 (ja) 2005-10-05
JP2000031262A (ja) 2000-01-28

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