TW478099B - Shallow trench isolation manufacture method - Google Patents
Shallow trench isolation manufacture method Download PDFInfo
- Publication number
- TW478099B TW478099B TW089123251A TW89123251A TW478099B TW 478099 B TW478099 B TW 478099B TW 089123251 A TW089123251 A TW 089123251A TW 89123251 A TW89123251 A TW 89123251A TW 478099 B TW478099 B TW 478099B
- Authority
- TW
- Taiwan
- Prior art keywords
- oxide layer
- layer
- patent application
- trench isolation
- shallow trench
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000002955 isolation Methods 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 39
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 24
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 24
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 21
- 239000010703 silicon Substances 0.000 claims abstract description 21
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 20
- 238000005530 etching Methods 0.000 claims abstract 3
- 239000007789 gas Substances 0.000 claims description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000001307 helium Substances 0.000 claims description 15
- 229910052734 helium Inorganic materials 0.000 claims description 15
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 7
- 230000002079 cooperative effect Effects 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 229910021529 ammonia Inorganic materials 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 240000002989 Euphorbia neriifolia Species 0.000 claims 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims 1
- 229910000077 silane Inorganic materials 0.000 claims 1
- 239000002002 slurry Substances 0.000 claims 1
- 238000000151 deposition Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 5
- 238000005137 deposition process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 239000012861 aquazol Substances 0.000 description 1
- 229920006187 aquazol Polymers 0.000 description 1
- 238000001505 atmospheric-pressure chemical vapour deposition Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 229940003953 helium / oxygen Drugs 0.000 description 1
- JSRLCNHTWASAJT-UHFFFAOYSA-N helium;molecular nitrogen Chemical compound [He].N#N JSRLCNHTWASAJT-UHFFFAOYSA-N 0.000 description 1
- 239000010977 jade Substances 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
- 238000005498 polishing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02164—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material being a silicon oxide, e.g. SiO2
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/022—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being a laminate, i.e. composed of sublayers, e.g. stacks of alternating high-k metal oxides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H01L21/02274—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition in the presence of a plasma [PECVD]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/314—Inorganic layers
- H01L21/316—Inorganic layers composed of oxides or glassy oxides or oxide based glass
- H01L21/31604—Deposition from a gas or vapour
- H01L21/31608—Deposition of SiO2
- H01L21/31612—Deposition of SiO2 on a silicon body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture 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
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/76224—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
- H01L21/76229—Concurrent filling of a plurality of trenches having a different trench shape or dimension, e.g. rectangular and V-shaped trenches, wide and narrow trenches, shallow and deep trenches
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Element Separation (AREA)
- Formation Of Insulating Films (AREA)
Description
478099 A7 B7 五、發明說明() 5-1發明領域 (請先閱讀背面之注意事項再填寫本頁) 本發明是有關一種半導體製程,特別是有關於一種淺 溝渠隔離製程。 5-2發明背景 第3A圖至第3C圖繪示習知的一種淺溝渠隔離製程流 程剖面圖。請參閱第3A圖,在一矽基底300上依序形成 墊氧化層301和氮化矽層302,然後飩刻氮化矽層302、墊 氧化層301和矽基底300以形成溝渠304。在形成襯氧化 層(line:r)3‘〇5之後,該溝渠304在第3B圖中,係以次常壓 化學氣相沈積氧化層(SACVD 〇Xide)306或高密度電漿化學 氣相沈積氧化層(HDP-CVD oxide)306進行過度塡充。之 後,請參閱第3C圖,再以化學機械硏磨技術將氮化矽層3〇2 上的氧化物移除。 經濟部智慧財產局員工消費合作社印製 第1圖與第2圖分別繪示習知的淺溝渠隔離剖面示意 圖。第1圖中用來塡充溝渠2〇4的氧化物是一種臭氧/四 乙基矽酸鹽氧化層(〇3/TEOS氧化層)206,而第2圖中用 來塡充溝渠404的氧化物是一種高密度電漿化學氣相沈積 氧化層(HDPCVD氧化層)406。無論是哪一種氧化物,都 '必須將該些溝渠204、404過度塡滿(如標號207、407所 示),以進行後續的平坦化製程。爲了避免在進行完平坦 2 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 經濟部智慧財產局員工消費合作社印製 478099 A7 B7 五、發明說明() 化之後發生化學機械硏磨不均勻(non-uniformity)或下陷 (dishing)等現象,之前所沈積的氧化物206、406厚度必 須要很厚。 不幸的是,淺溝渠隔離(STI)的溝渠塡充製程(trench fill process)是非常關鍵的,因此要用高品質的氧化物來 作達到隔離效果;同時,這個高品質氧化物卻要在後續製 程中扮演犧牲層(sac layer)的角色,而被例如化學機械硏 磨製程所移除。換句話說,爲了全面平坦化等目的,我們 有必要在溝渠上形成更多的犧牲氧化物,這對生產成本而 言是很大的浪費。 5-3發明目的及槪述 本發明主要目的之一,在於減少生產成本(running cost)。習知的溝渠沈積製程多使用的速率很慢的薄膜沈積 技術。在該沈積製程進行完後,會實施一個硏磨步驟 (polishing step),把多餘的薄膜移除。因此,上述這種較 慢的薄膜沈積製程對成本的考量實在造成嚴重的影響,畢 竟有相當多餘的薄膜會在後續硏磨步驟中被移除。 爲達成上述或其他目的,本發明提供一種淺溝渠隔離 製程,係先在一矽基底上依序形成一層氧化薄層與一層氮 化矽層。之後,蝕刻氮化矽層、氧化薄層和矽基底,以在 3 (請先閱讀背面之注意事項再填寫本頁)
本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 478099 經濟部智慧財產局員工消費合作社印製 A7 B7 玉、發明說明() 氮化砂層、氧化薄層和砂基底中形成一溝渠。然後,在上 述矽基底上形成一高溫次常壓化學氣相沈積氧化物層或高 密度電漿化學氣相沈積氧化物層,直到上述溝渠塡滿爲止。 接著,在上述矽基底上形成一電漿加強四乙基矽酸鹽氧化 物層覆蓋上述高溫次常壓化學氣相沈積氧化物層或高密度 電漿化學氣相沈積氧化物層。接著,進行一平坦化製程, 以去除高於上述氮化矽層的上述電漿加強四乙基矽酸鹽氧 化物層與上述高溫次常壓化學氣相沈積氧化物層或高密度 電漿化學氣相沈積氧化物層。 一般而言,如果上述電漿加強四乙基矽酸鹽氧化物層 的製作成本約爲高溫次常壓化學氣相沈積氧化物層或高密 度電漿化學氣相沈積氧化物層製作成本的一半,甚至只有 約三分之一,則利用本發明與習知比較起來可節省至少約 25%的成本。 就另一角度而言,本發明亦可說是提供了一種如下所 述的淺溝渠隔離製程。首先,在一基底中形成一溝渠。接 著,利用四乙基砍酸鹽、氦氣、氮氣、臭氧和氧氣等氣體 混合物,在約48〇_57〇°C的溫度下以及約4〇〇-700托耳的 壓力下,於基底上形成一第一氧化物層,直到溝渠實貧上 、塡滿爲止。接著,利用四乙基矽酸鹽、氦氣和氧氣等氣體 混合物在約4〇〇°C的溫度以及約5_13托耳的壓力下,於基 底上形成一第二氧化物層覆蓋第一氧化物層。·然後,進行 4 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁)
經濟部智慧財產局員工消費合作社印製 478099 A7 ----- B7 五、發明說明() 一平坦化製程,以去除高於基底的第一氧化物層與第二氧 化物層。 根據本發明應用實例,上述第二氧化物層可以是一種 電漿加強氧化物層(PE-οχ層),或是一種電漿加強四乙基砂 酸鹽層(PE-TEOS層)。 5-4圖式簡單說明 爲讓本發明之上述和其他目的、技術內容、和功效能 更明顯易懂,下文特舉較佳實施例,並配合所附圖式,作 詳細說明如下: 第1圖與第2圖分別繪示習知的淺溝渠隔離剖面示意 圖; 第3A圖至第3C圖繪示習知的一種淺溝渠隔離製程流 程剖面圖;以及 第4A圖至第4C圖繪示根據本發明較佳實施例,一種 部分的淺溝渠隔離製程流程剖面示意圖。 ' 圖示標記說明; 100、300 :矽基底 101:基底 5 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁)
經濟部智慧財產局員工消費合作社印製 478099 A7 B7 五、發明說明() 102、302 :氮化矽層 104、204、304、404 ··溝渠 106 :第一氧化層 108 :第二氧化層 206 : 03/TEOS 氧化層 207、407 :過度塡滿的情形 301 :墊氧化層 305 :襯氧化層 406 : HDPCVD 氧化層 5-5發明詳細說明 本發明之某本精神 我們提出一種成本較低的製程,係在溝渠塡充完畢之 後,在基底上形成一層犧牲氧化層。該犧牲氧化層沈積速 率較快,但屬於一種沈積速率較快的氧化層(PEOX或 PETEOS)。由於這層犧牲氧化層最後會被硏磨去除,所以 它的品質就不是那麼重要。 根據上述觀念,我們首次於溝渠沈積製程中,使用一 種兩步的沈積製程。在該製程中,於構渠塡充完畢之後, 、所需形成用於平坦化的氧化物(oxide)是用沈積速率較快的 技術來進行。 6 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) ,訂 iT------ 經濟部智慧財產局員工消費合作社印製 478099 A7 __________ B7 五、發明說明() 以溝渠(4K_5K,或約4·5Κ)+墊氮化矽層(1-2K,或約 1·5Κ)爲例(Κ=1000埃),其爲製作淺溝渠隔離(STI)所需之 氧化物厚度最小約8K。就本發明而言,該8K之氧化物可 以是〇3/TEOS層與高密度電漿(HDP)傳統氧化層的組合。 該8K之氧化物會在後續製程中,以化學機械硏磨(CMp)技 術將之硏磨至墊氮化矽層(移除高於墊氮化矽層的氧化 物)。 如果我們在上述氧化物塡到有4K之厚度時,即停止 所謂的溝渠塡充之高品質製程,接著沈積傳統的氧化層(而 不是高品質氧化層)。後續的製程則可依循一般標準的淺溝 渠隔離製程。 應用實胤 第4A圖至第4C圖繪示根據本發明較佳實施例,一種 部分的淺溝渠隔離製程流程剖面示意圖。請參閱第4A圖, 在一基底1〇1中形成一溝渠104,其中該基底1〇1可由一 矽基底100、一氧化薄層和一氮化矽層102所組成(其中氧 化薄層因厚度很薄且爲熟習該項技術者可輕易完成者,故 省略不繪)。此外’形成該溝渠104的方法例如是先在矽基 底· 100上依序形成氧化薄層和氮化矽層102,然後再蝕刻 、氮化矽層1〇2、氧化薄層和矽基底100。至於上述溝渠1〇4 的厚度可以是約45 00埃,而上述氮化矽層102的厚度約爲 1500 埃。 7 本紙張尺度適用中國國家標準(CNS)A4規格(210 x 297公髮) • I —,/—----------- (請先閱讀背面之注意事項再填寫本頁) -訂 _11------. 478099 經濟部智慧財產局員工消費合作社印製 A7 五、發明說明() 請參閱弟4 B圖’在基底101上形成一第一氧化物層 106,直到溝渠104實質上塡滿爲止。上述第一氧化物層1〇6 的厚度約爲3500-4500埃(其中以4000埃爲佳),其可以是 一種高溫次常壓化學氣相沈積氧化層(HT SACVD氧化 層),或是一種高密度電漿化學氣相沈積氧化層(HDPCVD 氧化層)。 §靑参閱弟4C圖’在基底101上形成一第二氧化物層log 覆蓋第一氧化物層106,其中第二氧化物層108的製作成 本低於桌一氧化物層的製作成本。之後,進行一習知的平 坦化製程,以去除高於基底101的第一氧化物層106與第 二氧化物層108,其中平坦化製程可以是一種化學機械硏 磨製程(CMP),或是一種回鈾刻製程。 上述第二氧化物層1〇8的沈積速率可以比第一氧化物 層106的沈積速率快。此外,上述第二氧化物層丨⑽是一 種電漿加強四乙基矽酸鹽氧化物層(PE-TE〇s層),或是一 種電漿加強氧化物層(ΡΕ、〇χ層)。 •爲了淸楚描述起見,我們提供兩個例子(例一和例二) 介紹第一氧化物層與第二氧化物層可能的製造參數。其中, 壓力的單位爲托耳或毫托耳,溫度的單位爲攝氏溫度(。❼, 氨氣壓力單位爲Psi,射頻偏壓功率爲瓦,氣體流速單位爲 8 本^尺度中關家鮮———---— (請先閱讀背面之注意事項再填寫本頁)
478099 經濟部智慧財產局員工消費合作社印製 A7 B7_ 五、發明說明() 每秒標準立方公分(seem)或mgm。 例一 製作第一氯化物層(利用HT SACVD) 氣體組成:四乙基矽酸鹽氧化物/氦氣/氮氣/臭氧/氧氣 流速:1500-6000 mgm/3500-7000 sccm/3500-7000
sccm/5000-6000 sccm/1000-3000 seem 壓力:400-700托耳 溫度:480-570°C 氨氣壓力:30-40 psi 射頻偏壓功率:0W 電源功率:0 W 製作蓋二氧化物層(禾丨丨用PE-TEOS) 氣體組成:四乙基矽酸鹽氧化物/氦氣/氧氣 流速:800-4000 mgm/1000-4000 sccm/600-4000 seem 壓力:5-13托耳 溫度:400。0 氦氣壓力:30-40 psi
射頻偏壓功率:0 W
電源功率:100+/-300 W 例二 製蓋二氧化物層(利用HDPCVD) 氣體組成··砂院/氧氣/氬氣 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁)
478099 A7 B7 五、發明說明() (請先閱讀背面之注意事項再填寫本頁) 流速:30-200 sccm/60-400 sccm/0-200 seem 壓力:5-20托耳 溫度:400-600°C 氨氣壓力:30-4〇 Psi 射頻偏壓功率:2000-6000 W 電源功率:2000-6000 W 製作第二氬化物層(利用PE-TEOS)
氣體組成:四乙基矽酸鹽氧化物/氨氣/氧氣 流速:8004000 mgm/1000-4000 sccm/600-4000 seem 壓力:5-13托耳 溫度:400°C 氦氣壓力:30-40 Psi 射頻偏壓功率:0 W 電源功率:100+/-300 W 經濟部智慧財產局員工消費合作社印製 一般而言,製作電漿加強氧化物(PE-ox)的花費(cost) 大約只有製作高品質氧化物花費的一半而已,正常來講甚 至只有約三分之一。因此,利用本發明我們可節省至少約 25%的成本。 •雖然本發明已以較佳實施例揭露如上,然其並非用以 、限定本發明,任何熟習此技藝者,在不脫離本發明之精神 和範圍內,當可作各種之更動與潤飾,因此本發明之保護 範圍當視後附之申請專利範圍所界定者爲準。 10 本紙張尺度適用中國國家標準(CNS)A4規格(21G X 297公髮)一
Claims (1)
- 478099 經濟部智慧財產局員工消費合作社印製A8 B8 C8 D8 六、申請專利範圍 氧氣等氣體混合物在400°C的溫度以及5-13托耳的壓力下 所形成。 5. —種淺溝渠隔離製程,包括下列步驟: 在一矽基底上依序形成一層氧化薄層與一層氮化矽 層; 蝕刻該氮化矽層、該氧化薄層和該矽基底,以在該氮 化矽層、該氧化薄層和該矽基底中形成一溝渠; 在該矽基底上形成一高密度電漿化學氣相沈積氧化物 層,直到該溝渠實質上塡滿爲止; 在該矽基底上形成一電漿加強四乙基矽酸鹽氧化物層 覆蓋該高溫次常壓化學氣相沈積氧化物層;以及' 進行一平坦化製程,以去除高於該氮化矽層的該電漿 加強四乙基矽酸鹽氧化物層與該高溫次常壓化學氣相沈積 氧化物層。 6. 如申請專利範圍第1項所述之淺溝渠隔離製程,其 中該高密度電漿化學氣相沈積氧化物層係利用矽烷、氧氣 和氬氣等氣體混合物在400-600°C的溫度以及2000-.6000 瓦的射頻功率下所形成,且其中該電漿加強四乙基矽酸鹽 氧化物層係利用四乙基矽酸鹽、氦氣和氧氣等氣L混合物 在400°C的溫度以及5-13托耳的壓力下所形成 7. —種淺溝渠隔離製程,包括下列步驟: 12 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) --------------------訂---------線 (請先閱讀背面之注意事項再填寫本頁) · . 經濟部智慧財產局員工消費合作社印制衣 478099 C8 D8 六、申請專利範圍 在一基底中形成一溝渠; 利用四乙基矽酸鹽、氦氣、氮氣、臭氧和氧氣等氣體 混合物,在480-570°C的溫度下以及400-700托耳的壓力 下,於該基底上形成一第一氧化物層,直到該溝渠實質上 塡滿爲止; 利用四乙基矽酸鹽、氦氣和氧氣等氣體混合物在40(TC 的溫度以及5-13托耳的壓力下,於該基底上形成一第二氧 化物層覆蓋該第一氧化物層;以及 進行一平坦化製程,以去除高於該溝渠的該第一氧化 物層與該第二氧化物層。 8. 如申請專利範圍第7項所述之淺溝渠隔離製程,其 中該第二氧化物層的形成速率比該第一氧化物層的形成速 率快。 9. 如申請專利範圍第7項所述之淺溝渠隔離製程,其 中該溝渠的深度爲4000-5000埃。 10. 如申請專利範圍第7項所述之淺溝渠隔離製程, 其中該第一氧化物層的厚度爲3500-4500埃。 11. 如申請專利範圍第7項所述之淺溝渠隔離製程, 其中該平坦化製程是化學機械硏磨製程。 13 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) --------訂·--------^^^1 (請先k讀背面之注意事項再填寫本頁) ' . 經濟部智慧財產局員工消費合作社印製 478099 韻. §_ 六、申請專利範圍 12.如申請專利範圍第7項所述之淺溝渠隔離製程, 其中形成該溝渠的製程更包括: 在一矽基底上依序形成一氧化薄層與一氮化矽層;以 及 蝕刻該氮化矽層、該氧化薄層和該矽基底。 13·如申請專利範圍第12項所述之淺溝渠隔離製程, 其中該氮化砂層的厚度爲1000-2000埃。 14. 如申請專利範圍第7項所述之淺溝渠隔離製程, 其中該些氣體混合物的流速如下: 用於形成該第一氧化物層的四乙基矽酸鹽、氦氣、氮 氣、臭氧和氧氣的流速分別爲1500-6000 mgm、3500-7000 seem、3 500-7000 seem、5000-6000 seem 和 1000-3 000 seem ; 以及 用於形成該第二氧化物層的四乙基矽酸鹽、氦氣和氧 氣的流速分別爲 800-4000 mgm、1000-4000 seem 和 600-4000 seem ° 15. 如申請專利範圍第14項所述之淺溝渠隔離製程, 其中用於第一氧化物層的氨氣壓力爲30-40 Psi,而用於第 、二氧化物層的氨氣壓力爲30-40 Psi。 16. 如申請專利範圍第15項所述之淺溝渠隔離製程, 14 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) --------------------訂--------- (請先閱讀背面之注意事項再填寫本頁) _ 經濟部智慧財產局員工消費合作社印製 478099 C8 D8 六、申請專利範圍 其中第二氧化物層係利用700-1300瓦的電源功率來形成。 17. —種淺溝渠隔離製程,包括下列步驟: 在一基底中形成一溝渠; 利用四乙基矽酸鹽、氦氣、氮氣、臭氧和氧氣等氣體 混合物,在480-570°C的溫度下以及4〇〇-7〇〇托耳的声力 下,於該基底上形成一第一氧化物層,直到該溝蕖實質上 塡滿爲止; 利用四乙基砍酸鹽、氦氣和氧氣等氣體混合物在400qC 的溫度以及5-13托耳的壓力下,於該基底上形成〜第二氧 化物層覆蓋該第一氧化物層;以及 進行一平坦化製程,以去除高於該溝渠的該第一氧化 物層與該第二氧化物層。 18. 如申請專利範圍第17項所述之淺溝渠隔離製程, 其中該些氣體混合物的流速如下: 用於形成該第一氧化物層的四乙基矽酸鹽、氦氣和氬 氣的流速分別爲 30-200 seem、60-400 seem 和 0-200 seem ; 以及 用於形成該第二氧化物層的四乙基矽酸鹽、氦氣和氧 氣的流速分別爲 800-4000 mgm、1000-4000 seem 和 600-4000 seem ° 19·如申請專利範圍第18項所述之淺溝渠隔離製程, 15 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) " ---------------------訂---------線 ,(請先M-讀背面之注意事項再填寫本頁) ‘ · 478099 A8 B8 C8 D8 六、申請專利範圍 其中用於第一氧化物層的氦氣壓力爲30-40 Psi,而用於第 二氧化物層的氦氣壓力爲30-40 Psi。 20·如申請專利範圍第19項所述之淺溝渠隔離製程, 其中該第二氧化物層係利用700-1300瓦的電源功率來形 成,而該第一氧化物層則是利用2000-6000瓦的電源功率 來形成。 ---------------------訂--------線 \請先έ讀背面之注意事項再填寫本頁) · · 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW089123251A TW478099B (en) | 2000-11-03 | 2000-11-03 | Shallow trench isolation manufacture method |
TW089123251A TW501223B (en) | 2000-11-03 | 2001-06-05 | Shallow trench isolation process |
US09/895,947 US6617224B2 (en) | 2000-11-03 | 2001-06-28 | Multiple stage deposition process for filling trenches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW089123251A TW478099B (en) | 2000-11-03 | 2000-11-03 | Shallow trench isolation manufacture method |
Publications (1)
Publication Number | Publication Date |
---|---|
TW478099B true TW478099B (en) | 2002-03-01 |
Family
ID=21661796
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW089123251A TW478099B (en) | 2000-11-03 | 2000-11-03 | Shallow trench isolation manufacture method |
TW089123251A TW501223B (en) | 2000-11-03 | 2001-06-05 | Shallow trench isolation process |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW089123251A TW501223B (en) | 2000-11-03 | 2001-06-05 | Shallow trench isolation process |
Country Status (2)
Country | Link |
---|---|
US (1) | US6617224B2 (zh) |
TW (2) | TW478099B (zh) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7026172B2 (en) * | 2001-10-22 | 2006-04-11 | Promos Technologies, Inc. | Reduced thickness variation in a material layer deposited in narrow and wide integrated circuit trenches |
TW200402772A (en) * | 2002-05-21 | 2004-02-16 | Asml Us Inc | Method of depositing an oxide film by chemical vapor deposition |
US6887785B1 (en) | 2004-05-13 | 2005-05-03 | International Business Machines Corporation | Etching openings of different depths using a single mask layer method and structure |
US7470584B2 (en) * | 2005-01-21 | 2008-12-30 | Taiwan Semiconductor Manufacturing Co., Ltd. | TEOS deposition method |
US7718458B2 (en) * | 2007-09-11 | 2010-05-18 | Xerox Corporation | Electric field concentration minimization for MEMS |
CN102956535B (zh) * | 2011-08-24 | 2015-05-13 | 中芯国际集成电路制造(北京)有限公司 | 半导体器件及其制造方法 |
JP6456764B2 (ja) * | 2015-04-28 | 2019-01-23 | 株式会社Kokusai Electric | 半導体装置の製造方法、基板処理装置およびプログラム |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0697660B2 (ja) | 1985-03-23 | 1994-11-30 | 日本電信電話株式会社 | 薄膜形成方法 |
US4962063A (en) | 1988-11-10 | 1990-10-09 | Applied Materials, Inc. | Multistep planarized chemical vapor deposition process with the use of low melting inorganic material for flowing while depositing |
US5204288A (en) | 1988-11-10 | 1993-04-20 | Applied Materials, Inc. | Method for planarizing an integrated circuit structure using low melting inorganic material |
US5244841A (en) | 1988-11-10 | 1993-09-14 | Applied Materials, Inc. | Method for planarizing an integrated circuit structure using low melting inorganic material and flowing while depositing |
JPH0740569B2 (ja) | 1990-02-27 | 1995-05-01 | エイ・ティ・アンド・ティ・コーポレーション | Ecrプラズマ堆積方法 |
US5089442A (en) | 1990-09-20 | 1992-02-18 | At&T Bell Laboratories | Silicon dioxide deposition method using a magnetic field and both sputter deposition and plasma-enhanced cvd |
KR100255703B1 (ko) | 1991-06-27 | 2000-05-01 | 조셉 제이. 스위니 | 전자기 rf연결부를 사용하는 플라즈마 처리기 및 방법 |
US6064104A (en) | 1996-01-31 | 2000-05-16 | Advanced Micro Devices, Inc. | Trench isolation structures with oxidized silicon regions and method for making the same |
US5994209A (en) * | 1996-11-13 | 1999-11-30 | Applied Materials, Inc. | Methods and apparatus for forming ultra-shallow doped regions using doped silicon oxide films |
TW312821B (en) | 1996-11-19 | 1997-08-11 | United Microelectronics Corp | Manufacturing method of shallow trench isolation |
US5851900A (en) | 1997-04-28 | 1998-12-22 | Mosel Vitelic Inc. | Method of manufacturing a shallow trench isolation for a semiconductor device |
TW412842B (en) | 1997-10-18 | 2000-11-21 | United Microelectronics Corp | Method of making dual gate oxide |
TW368727B (en) | 1998-03-17 | 1999-09-01 | United Microelectronics Corp | Manufacturing method for shallow trench isolation structure |
US6245691B1 (en) * | 1998-05-29 | 2001-06-12 | Taiwan Semiconductor Manufacturing Company | Ozone-teos method for forming with attenuated surface sensitivity a silicon oxide dielectric layer upon a thermally oxidized silicon substrate layer |
US6239002B1 (en) * | 1998-10-19 | 2001-05-29 | Taiwan Semiconductor Manufacturing Company | Thermal oxidizing method for forming with attenuated surface sensitivity ozone-teos silicon oxide dielectric layer upon a thermally oxidized silicon substrate layer |
US6204147B1 (en) * | 1999-03-16 | 2001-03-20 | United Silicon Incorporated | Method of manufacturing shallow trench isolation |
US6187637B1 (en) | 1999-03-29 | 2001-02-13 | United Microelectronics Corp. | Method for increasing isolation ability using shallow trench |
US6180489B1 (en) | 1999-04-12 | 2001-01-30 | Vanguard International Semiconductor Corporation | Formation of finely controlled shallow trench isolation for ULSI process |
US6368988B1 (en) * | 1999-07-16 | 2002-04-09 | Micron Technology, Inc. | Combined gate cap or digit line and spacer deposition using HDP |
US6174808B1 (en) * | 1999-08-04 | 2001-01-16 | Taiwan Semiconductor Manufacturing Company | Intermetal dielectric using HDP-CVD oxide and SACVD O3-TEOS |
US6294483B1 (en) * | 2000-05-09 | 2001-09-25 | Taiwan Semiconductor Manufacturing Company | Method for preventing delamination of APCVD BPSG films |
-
2000
- 2000-11-03 TW TW089123251A patent/TW478099B/zh not_active IP Right Cessation
-
2001
- 2001-06-05 TW TW089123251A patent/TW501223B/zh active
- 2001-06-28 US US09/895,947 patent/US6617224B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US6617224B2 (en) | 2003-09-09 |
US20020055268A1 (en) | 2002-05-09 |
TW501223B (en) | 2002-09-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TW322619B (en) | The method for forming trench isolation | |
TW559862B (en) | Etch pattern definition using a CVD organic layer as an anti-reflection coating and hardmask | |
TWI286347B (en) | A method for forming a shallow trench isolation feature | |
TW382774B (en) | Trench isolation method utilizing composite oxide films | |
TW451395B (en) | Method of achieving top rounding and uniform etch depths while etching shallow trench isolation features | |
TW400615B (en) | The structure process of Shallow Trench Isolation(STI) | |
TW379404B (en) | Manufacturing method of shallow trench isolation | |
TW478099B (en) | Shallow trench isolation manufacture method | |
TW400605B (en) | The manufacturing method of the Shallow Trench Isolation (STI) | |
JP3990625B2 (ja) | シャロートレンチアイソレーション方法 | |
JP2000306992A (ja) | 半導体装置の製造方法 | |
TW426934B (en) | Method for shallow trench isolation of transistors without using chemical-mechanical polishing | |
KR100831681B1 (ko) | 반도체 소자의 소자분리막 형성방법 | |
CN101501835A (zh) | 一种用自对准氮化硅掩膜形成浅沟槽隔离的方法 | |
Lin et al. | A ULSI shallow trench isolation process through the integration of multilayered dielectric process and chemical–mechanical planarization | |
TW200421491A (en) | Bottom oxide formation process for preventing formation of voids in the trench | |
TW405210B (en) | The manufacture method of the shallow trench isolation (STI) structure to avoid producing the microscratch on the surface of the shallow trench isolation (STI) structure | |
TW380297B (en) | Manufacturing method for shallow trench isolation structure | |
TW440958B (en) | Formation process for shallow trench isolation layer | |
CN110137131A (zh) | 沟槽隔离结构的形成方法、化学气相沉积工艺 | |
JPH07307382A (ja) | トレンチ素子分離構造およびその形成方法 | |
TW391050B (en) | The improved process method of the shallow trench isolation oxide | |
TW439198B (en) | A method to prevent the recess of silicon oxide layer in the shallow trench isolation process | |
TW312836B (en) | Method of forming shallow trench isolation | |
TW313693B (en) | Method of forming shallow trench isolation |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GD4A | Issue of patent certificate for granted invention patent | ||
MM4A | Annulment or lapse of patent due to non-payment of fees |