TW543115B - Method and apparatus for forming an interlayer insulating film, and semiconductor device - Google Patents

Method and apparatus for forming an interlayer insulating film, and semiconductor device Download PDF

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Publication number
TW543115B
TW543115B TW089100038A TW89100038A TW543115B TW 543115 B TW543115 B TW 543115B TW 089100038 A TW089100038 A TW 089100038A TW 89100038 A TW89100038 A TW 89100038A TW 543115 B TW543115 B TW 543115B
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Taiwan
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film
silicon dioxide
patent application
scope
item
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TW089100038A
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English (en)
Inventor
Kazuo Maeda
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Canon Sales Co Inc
Semiconductor Process Lab Co
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    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C16/00Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
    • C23C16/44Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
    • C23C16/52Controlling or regulating the coating process
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Description

543115 五、發明說明(1) --- 本發明係有關一種用來形成中間層絕緣膜之方法,特 別是有關形成具有高度整合集積度之半等體設備所需之一 低介電常數(dielectric constant)中間層絕緣膜之方 法。近年來針對半導體設備高度整合集積度之、進1,造成 較窄之配線(w i r i ng 1 i ne )間隔。該窄化之配綠間隔使配 線間之電容增加,因而需要形成一具有低介電常數中間 層絕緣膜。 . 隨著最近在LSI裝置之高度整合集積度化發展,配線 已被細微化以及多層化,並且使配線間之電容增加。該增 加之電谷已造成操作速度大幅減少。因此這方面的進步是 很需要的。已被研究之改進方法,其中之一為減低配線間 之電容。該方法使用一中間層絕緣膜,其具有比目前正在 使用為中間層絕緣膜之二氧化矽更低之介電常數。 目前正在研究中之具有低介電常數之典型中間層絕緣 膜為S i OF膜以及一具有低介電常數之—有機絕緣膜。下列 為該等膜之說明。
SiOF
Si OF膜是使用含F以及以一部份Si-〇鍵取代Si_F鍵之 二氧化矽所形成。該Si 0F膜具有一相對介電常數,其隨著 薄膜中之F濃度增加而減少。 數種形成SiOF膜之方法已揭示(參閱1996年二月份月 週刊’’ Semiconductor World”)。該等方法中最被看好的 是使用S i扎、Ο?、氬以及S i F4作為來源氣體,以及高密度 電漿化學氣相沈積法形成一 S i 0 F膜。該方法所步成之g丨〇 ρ 543115 L、發明說明(2) ™— 度化 濃氧 氣二 之之 有介 ,低 >有 ¾ 分 熱 和 數 膜之相對介電常數大約在3 · 1至4 · 0之間(隨膜中 τ有所不同)。該常數比習知作為中間層絕緣膜 石夕相對介電常數4.0低。 低介電常數之有機絕緣膜 ^因為具有低於Si OF膜之介電常數(3. 0或更4 電$緣膜現在已成為焦點。表1列出幾項已揭示; :資數之有機絕緣膜,以及其個別之相對介電常 解溫度。 表1 有機絕綠暝 含氟樹脂 相對介電常數 熱分解 溫度 α) Note 2.4 420 月週刊p丰導體世界j 1997 二月份第82 1 Cy top 非結晶 teion — 2.1 400 月週刊r丰導艚世界』【996 二月份第90 1 1.9 L------ 400 月週刊|3半導體世界j 1996 二月份第9ί頁 然而’該SiOF膜之缺點為膜中 ,乳吸收性減低。此降低之抗水氣吸收性會造成嚴重的問 ,’因為上層屏障金屬層之電晶體特性和粘附力會受影 響。 φ # ^為二石夕日日圓或二氧化石夕膜之間之不良枯附力’低介 μ 吊π 4之^機絕緣膜復容易脫落。而且因其熱分解溫度為 00 C左右,該有機絕緣膜有低抗熱性(heat
第5頁 【43115 五、發明說明(3) 而低抗熱性會造成高溫下晶圓回火 resistivity)之缺點 (annealing)之問題 〇 本發明之目的為提供一種製造具有良好抗水氣吸吹 性、抗熱性以及低介電常數之中間層絕緣膜之、方7法;使用 該中間層絕緣膜之半導體裝置;以及形成該中間層絕緣膜 之半導體製造設備。 根據本發明之形成中間層絕緣‘膜之方法,在一物件 (基材)亡形成一底層絕緣膜,再於該底層絕緣膜上形成 一多孔二氧化矽膜。該二氧化矽膜係以下列三種方法形 成: “ iL)如第1圖所示’使用Μ以及〇2或叫1以及〇2為 反應氣體以化學氣相沈積法形成。 士發明人發現該方法係將SiA以及%或㈣以及〜於 虱體中互相反應,因而形成微粒狀叫於氣體中。該 狀Si02_於底層絕緣㈣5。又因為該微粒狀 形、 狀,該底層絕緣膜之表面盔、土 h , 2 n & 無去岔集地以微粒狀Si02填滿。 因此在该底層絕緣膜1 〇 5之上开彡忐 膜1〇6 ^ 又上形成了具有很多孔隙之Si〇2 β將)如第3(:、4圖表示在低壓下間歇性和週期#產+ 電漿於SiH4和〇2之氣體中之方法。 ,夺遇』性產生 本發明人發現在低壓下於 々 的方法,微粒狀s i 〇2亦形成於> ^ : 2氣—中產生電漿 形狀,該基材之表;無法成密=體Λ 因該微粒狀5叫之 該微粒狀之Si02沈積在該基材二知:狀Sl〇2填滿。因此 I材表面,因而形成一多孔二氣 州115 五、發明說明(4) 化秒膜於該基材上。 二氧t::^並,現以典型低屢化學氣相沈積形成之多孔 氧化石夕膜係為薄膜’其中所形成之多孔二 歇性知、固s、八穩定性質之膜。本發明人發現在低壓下間 之方:k j性產生電裝於Si H4和〇2氣體中作為形成該等膜 以匕2?係為週期性產生電聚之實例。在該圖中, 氟相沈積是在低壓下,時間τι τ2進行。低壓化 予孔相沈積則是在時間Τ 2〜Τ 3進行。 再士 iL)利用該方法係交替形成有機膜和二氧化石夕膜’ 再如第6C、6D圖所示以氧氣電浆處理該膜。 根據該方法,首杰:丑/丄、 化石夕膜之膜5〇6。再Λ Λ Λ一具有該有機膜和該二氧 中丹以氧亂電漿處理該膜。氧氣電漿處理 膜弗点Hi之該有機膜係被選擇性移除,因此在該有機 生夕了I I域產生孔隙。如此K呆留Si〇2於該膜上並產 生❹孔隙,因而形成—多孔二氧化賴5〇7。 (4 )、以虱氣電聚處理該多孔二氧化石夕膜 舲兮:f述方法形成之多孔二氧化矽膜具有許多孔隙。因 =二,二氧化矽膜之表面積大於無孔隙之二氧化矽膜。 乂此^夕孔二氧化石夕膜很容易吸收空氣中之水氣。如第 '3D,圖所示’以氫氣電聚處理該多孔二氧化石夕膜。 3方=内表面Si_〇之不連接鍵被m鍵所取代。因而 了防止水軋被孔隙之内表面吸收。 (5 )形成一覆蓋絕緣膜 如第1E圖所示,以氫氣電聚處理該多孔二氧化石夕膜,
麵 第7頁 543115 五、發明說明(6) —~ 緣膜之方法的剖面圖。 第3A〜31圖係為根據本發明第3實施例之形成中間層絕 緣膜之方法的剖面圖。 第4圖係表示根據本發明第3、4實施例之來.成中間層 絕緣膜之方法以及根據本發明第6實施例之·半苓體製造^ 置中,S i札、〇2、氬流量以及施於一腔室中之 間的相互關係之特性。 · I力與守 第5A〜5M圖係為根據本發明第4實施例之形成中間層絕 緣膜之方法的剖面圖。 第6A〜6J圖係為根據本發明第5實施例之形成中間層絕 緣膜之方法的剖面圖。 曰 第7圖係表示根據本發明第5實施例之形成中間層絕緣 膜之方法以及根據本發明第6實施例之半導體製造裝置 中,形成有機膜之反應氣體(CH化合物)流量以及"形成二 氧化矽膜之反應氣體(SiHdO2)之流量與時間的相互關係二 特性。 第8圖係為根據本發明第6實施例之半導體製造裝置之 組成。 符號說明: 1(Π〜矽基材;102〜BPSG膜;103〜鋁製配線層;1〇4〜基 材;105〜底層絕緣膜;106〜Si02膜;107〜二氧化石夕膜; 108〜二氧化矽膜;109〜覆蓋絕緣膜;201〜矽基材;202〜 BPSG膜;203〜鋁製配線層;204〜基材;2 0 5〜二氧化矽膜·’ ; 206〜二氧化矽膜;207〜二氧化矽膜;208〜嵌入式槽;209〜
543115
二氧化矽膜(第一絕緣膜);21〇〜銅鍍層:3〇1~矽基材; 30 2〜BPSG膜;303〜鋁配線層;304〜基材;30 5〜二氧化矽 膜(底層絕緣膜):3 0 6〜二氧化矽膜;3 0 7〜二氧化矽膜· 3〇8〜多孔二氧化矽膜;3〇9〜二氧化矽膜;^〜矽基材二’ —案號 89100038 五、發明說明(7) 402〜BPSG膜;403〜鋁配線層;404〜基材;40 5〜二氧化矽 膜(底層絕緣膜);4 0 6〜二氧化矽膜;4 〇 7〜嵌入式槽;
4 0 8〜二氧化矽膜(第一絕緣膜);4 〇 9〜銅鍍層;4丨〇〜阻障 金屬氮化鈦膜;410a〜氮化鈦膜;501〜矽基材;502〜BPSG 膜;5 0 3〜鋁配線層;5 04〜基材;5〇5〜二氧化矽膜(底層絕 緣膜),506〜具有該有機膜和該二氧化矽膜之膜;so?〜多 孔一氧化石夕膜,508〜Si 02膜;509〜二氧化石夕膜;510〜多 孔Si02膜;601〜矽基材;602〜MFC ; 603〜MFC ; 604〜 路;611〜氣體入口; 612 615〜晶圓;616〜氣體出口 源;619 、 620 、 621 、 622 頻電源;6 2 5〜開關裝置。 較佳實施例 MFC ; 605〜MFC ; 606 、 607 、 608 、 609〜分管路;610〜管 6 1 3〜腔室;6 1 4〜晶圓支持架; 6 1 7〜開關裝置;6 1 8〜高頻電 62 3、6 26〜控制信號;6 24〜高 接下來,將參考附圖並詳加敘述本發明之實施例。
(1 )根據本發明實施例之形成中間層絕緣膜之方法 的敘述。 ' (a ) ·第1實施例 第1 A〜1 Η圖是敘述第1實施例之剖面圖。 首先,如第1Α圖所示,形成一bpSG膜1〇2於矽基材1〇1
543115
後’於4 B P S G膜1 〇 2上形成一铭膜,再將該铭膜圖 案轉移其中形成一紹製配線層(wiring layer)l〇3。一 基相1 〇 4包括石夕基材1 0 1,該B P S G膜1 0 2以及該鋁製配線層 I I I ·< η 接著,如第1 Β圖所示,於該基材丨〇4上形感一二氧化 |膜1 0 5 (底層絕緣膜)。該二氧化石夕膜1 〇 5是以電漿化學 氣相沈積形成的。反應氣體為SiH4以及Ν2〇。該二氧化矽膜 1〇5之厚度為100 。 、 ^心後,如第1 C圖所示,將二氧化矽膜丨〇 6形成於該二 ^匕夕膜1 0 5上。該二氧化石夕膜1 〇 6係以化學氣相沈積形 二’以以及%為反應氣體。當使用該氣體為反應氣體 =,於氣體中形成具有大顆粒之Si〇2,且具有大顆粒之 積於该二氧化矽膜i 〇 5上。因此該二氧化矽膜1 〇 6上 命多孔隙。因而該二氧化矽膜丨〇 6為多孔二氧化矽膜。 該多孔二氧化矽膜1〇6之厚度為5〇〇 nm。 ^然後如第11}圖所示,以氫氣電漿處理該多孔二氧化矽 代处。因此在孔隙之内表面中脫落之Si-0鍵被Si-Η鍵取 乂。結果,該膜之抗水氣吸收性增加。 5 Ik後,如第丨Ε圖所示,一二氧化矽膜丨〇 7形成於以氫 之該多孔二氧化矽膜1〇6上。該二氧化矽膜1〇7係以 取化,氣相沈積形成。反應氣體為SiH4以及Ν2〇。 接著,如第1F圖所示,形成一二氧化矽膜1〇8於該二 化。a夕膜1 〇 7上。形成该二氧化石夕膜1 〇 8是為了將表面平坦 。该二氧化矽膜108係以〇3為反應氣體而使用
第11頁 543115 五、發明說明(9) TEOS(Tetra-Ethyl-Ortho-Si 1 icate)之化學氣相沈積形 成。使用於該方法之03的密度必需足夠將TE〇s氧化。因此 該二氧化矽膜1 〇 8是一流體二氧化矽膜。該二氧化矽膜1 〇 8 之厚度為200 nm。 ' 接著,如第1G圖所示,該二氧化矽膜1〇8之表面以蝕 刻或CMP (Chemical Mechanical Polishing method)方法 磨平。此時,之前形成之二氧化矽膜丨〇 5、i 〇 6及丨〇 7分別 以蝕刻將其部分移除。以蝕刻進行之平坦化,在鋁配線層 (aluminum wiring layer)之凸面體l〇3a上所形成之二氧曰 化矽膜1 0 5並未被全部移除。 朴隨後,如第1 H圖所示,形成一二氧化矽膜1 〇 9 ( —覆 盍%緣膜)於該平坦化之表面上。該二氧化矽膜丨〇 9係以 電漿化學氣相沈積形成。反應氣體為SiH4以及乂〇。該二 化石夕膜109之厚度為100 _。 在4基材1 0 4上形成具有良好抗熱性、抗水氣吸收性 和低介電常數之中間層絕緣膜係由上述所形成之二氧化矽 膜105、(該底層絕緣膜)1〇6、1〇7及1〇9 (該覆蓋絕緣膜) 所組成。也就是說,該二氧化矽膜i 0 6為多孔狀,因此該 =氧化矽膜106之介電常數為2〇至3〇。該介電常數值比 ,、型二氧化矽膜之介電常數4· 0要低。而且,該典型二氣 7 =膜10 9係形成於該多孔二氧化石夕膜i 〇 6上。因而可防止 7广滲透至該二氧化矽膜1〇6。並且,二氧化矽膜ι〇5、 、1 0 7及1 0 9之抗熱性比有機絕緣膜好。 r
如上所述之實例,以SiA及〇3作為反應氣體是為了形
第12頁 543115 五、發明說明(ίο) 成該多孔二氧化矽膜1 〇 6。然而,亦可使用其他反應氣體 形成與上述實例相似之多孔二氧化矽膜。該等反應氣體 如:
Si2H6 +02、
Si3H8 +03、或
Si3H8 +02。 再者,除了上述之各反應氣體·,還有一含硼反應氣體 -和一含氟之反應氣體,因而可形成一多孔含硼二氧化係膜 ' 和一多孔含氟二氧化矽膜。 (vb).第2實施例 貫施例2係以弟1貫施例施加於一刻纹製程。 首先,如第2A圖所示,形成一βρ% (borophosphosilicate glass)膜 2 02 於一矽基材 201 上。 於該BPSG膜202上形成一鋁層,再將該鋁層圖案化而 形成一叙配線層2 0 3。一基材2 〇 4包括該矽基材2 0 1、該 BPSG膜以及該鋁配線層20 3。 接著如第2B圖所示,一具有厚度1〇〇ηπι之二氧化矽膜 2 0 5 (該底層絕緣膜)形成於該鋁配線層2〇3之上。該二氧 化矽膜20 5係以電漿化學氣相沈積形成。反應氣體為Sii^
和N2 0。 碰I 再如第2C圖所示,一二氧化矽膜2〇6形成於該二氧化囅 矽膜2,05 (該底層絕緣膜)之上。該二氧化矽膜2〇6係以電· 漿化學氣相沈積和使用Si2H6 03為反應氣體所形成。使用.該 ' 反應氣體時,於氣體中會形成二氧化矽微粒,該微粒之二
543115 五、發明說明(11) 為500 nm 氧化矽沈積於該二氧化矽膜205上。因此該二氧 為多孔二氧化矽膜。該多孔二氧化矽膜2〇6之厚度、 隨後,如第2D圖所示,以氫氣電漿處理該多孔二 矽膜20 6。因此孔隙中内表面上之Si_〇脫離鍵被^咄鍵所 取代。故可改善該膜之抗水氣吸收性。 如第2E圖所示,一二氧化矽膜2 〇7形成於該多孔二氧 化矽膜20 6上。、該二氧化矽膜20 7係以電漿化學氣相沈積形 成。反應氣體為S i扎和A 0。該二氧化矽膜2 〇 7可防止後來 形成於該二氧化矽膜207上銅鍍層之銅擴散至該多孔二氧 化矽膜206中。 — 如第2F圖所示,以圖案轉移法將該二氧化矽膜2〇5 (該底層絕緣膜)20 6及20 7開放,因而形成一嵌入式槽 208。該嵌入式槽2 08與形成於二氧化矽膜2〇5下之鋁配線 層203連接。
▲如第2G圖所示,二氧化矽膜2〇9 (第一絕緣膜)形成 於該二氧化矽膜20 7之上和該嵌入式槽2〇8之兩側及底部。 該一氧化石夕膜2 0 9係以電漿化學氣相沈積形成。形成於該 嵌入式槽208兩側之二氧化矽膜2 〇9可防止後來埋設於該嵌 入式槽208之銅擴散至該多孔二氧化矽膜2〇6中。 如第2H圖所示’以等向餘刻該二氧化石夕膜209 (該第 一絕緣膜)。因此該二氧化矽膜2 0 9被移除,留下在嵌入 式槽2 0 8兩側部份之二氧化矽膜2 〇 9。因此形成一連接鋁配 線層20 3之接觸孔於該嵌入式槽2〇8底部。該二氧化矽膜
第14頁 543115 五、發明說明(12) 2 0 7仍留在該多孔二氧化矽膜2 〇 6上而未被移除。 如第21圖所示,形成一銅鍍層210於該嵌入式槽20 8和 该二氧化石夕膜20 7上。形成於該嵌入式槽208之銅鍍層2 1〇 係作為銅配線層。 ..< 接著’如第2J圖所示,形成於該二氧化石之膜2〇7上之 銅錄層2 1 0以CMP方法研磨和移除。因此只保留位於嵌入式 槽208之銅鍍層。 隨後如第2K圖所示,形成一阻障金屬(barrier ni^tal)氮化鈦(TiN)膜21 i於該嵌入式槽2〇8上。該氮化鈦 膜可防止嵌入式槽2〇8中之銅擴散至後來形成於該嵌入式 槽208上之該二氧化矽膜。 ,著如第2L圖所示,該圖案轉移法保留嵌入式槽2〇8 上之氮化鈦膜2 1 1 a,而移除位於其他部分之氮化鈦膜 211。 、
隨後如第2M圖所示,形成一二氧化矽膜212 (該覆蓋 絕緣膜)於該二氧化矽膜2〇7和TiN膜2Ua之上。該二氧1匕 矽膜21 2係以電漿化學氣相沈積形成。反應氣體為SiH4及N
如上所述,形成一具有良好抗熱性及抗水氣吸收性以 及^ ’I電#數之中間層絕緣膜於該基材2上。也就是該 一氧化矽膜206係為多孔,且其介電常數為2〇至3 〇。該 介電常數比典型無孔二氧化矽之介電常數L 〇要低。^ ,該典型二氧化矽膜207和212 (該覆蓋絕緣膜)係形成於 该多孔二氧化矽膜206上。因此可防止水氣擴散至該多孔 麵 _
第15頁 543115
並且二氧化矽膜206 、207及212之抗熱 二氧化矽膜2 06上。 性比有機絕緣膜好 上述實例中,為了形成 氣體係使用Si2H6&〇3。然而 與上述實例類似之多孔二氧 S i2H6 + 〇2、 該多孔二氧化矽膜2 〇 6,反應 亦可使用其他反應氣體形成一 化石夕膜。該等反應氣體如: S i 3 ^8 + 〇3、或 S i3 H8 + 02。
再f,除了上述之各反應氣體,還有一含硼反應氣體 和一含氟之反應氣體,因而可形成一多孔含硼二氧化係膜 和一多孔含氟二氧化矽膜。 (c ) ·苐3實施例 第3A〜31圖為第3實施例之剖面圖。第4圖表示Siij4、〇 2、氬流量及施加於第3實施例之腔室之rf電力與時間之關 係0 首先,如第3A圖所示,形成一 BPSG膜302於一矽基材 301上。於該BPS G膜302上形成一鋁層,再將該鋁層圖案轉 移化而形成一链配線層303。一基材304包括該石夕基材 301、該BPSG膜3 02以及該鋁配線層3 0 3。
接著如第3B圖所示,一具有厚度100 nm之二氧化石夕膜 305 (該底層絕緣膜)形成於該鋁配線層303之上。該二氧 化矽膜30 5係使用反應氣體8丨114和〇2,在11'〇1^壓力下,保 持該矽基材301於4 0 0 °C,以低壓電漿化學氣相沈積法形 成0
543115 五、發明說明(14) +再如第3C圖所示,一二氧化矽膜3〇6形成於該二氧化 =膜3 0 5 (禮底層絕緣膜)之上。該二氧化矽膜3 〇 6係以如 4圖所示,施加一rf電力於腔室中和使用Si2扎和%為反 應氣體,並將該矽基材3 01保持在40 0而形成v如第4圖 ,不,在形成膜的過程中,該Si h4及〇2之埤量奏固定的, 忒R F電力是以每1 〇秒一循環施加於該腔室中。因此電漿係 以母1 0秒之循環產生及消失。產生電漿時,於腔室中引入 氬,以控制腔室中之壓力。使用隨著時間變化之電漿,可 在一腔室中重複低壓化學氣相沈積和低壓電漿化學氣相沈 積之製程。例如第4圖中,在〇〜5秒中並無電漿產生,因此 其製程為低壓化學氣相沈積。在5〜1 〇秒中產生電漿,製程攀 則為低壓電漿化學氣相沈積。在此實施例中,腔室中之壓 力在低壓化學氣相沈積係為1 · 〇 Tor r。該壓力比在低壓電 漿化學氣相沈積之腔室中(2· 0 Torr)低。而且,為了要產 生電漿,所使用的RF電力為13· 56 MHz和40 0 kMHz。該低 壓化學氣相沈積和低壓電漿化學氣相沈積係以此方式進 行’因而形成該具有很多孔隙之二氧化石夕膜。也就是該二 氧化矽膜306為多孔。 接著如第3D圖所示,以氫氣電漿處理該多孔二氧化矽 膜306。因此孔隙中内表面上之Si-Ο脫離鍵被Si-Η鍵所取 t 代。於是可改善該膜之抗水氣吸收性。 · 如第3E圖所示,一二氧化矽膜3 07形成於該多孔二氧 化矽膜30 6上。該二氧化矽膜307係以電漿化學氣相沈旛形 成。反應氣體為S i H4和02。
第17頁 543115 五、發明說明(15) 如第3F圖所不’形成一多孔二氧化矽膜3〇8於該二氧 化矽膜30 7上。形成該二氧化矽膜30 8是為了將表面平坦 化。該二氧化夕膜3 0 8係以化學氣相沈積法使用 TEOS(Tetra-Ethyl-Ortho-Silicate)及 〇3 為反應氣體。在 此使用的%之密度為足夠將TE0S氧化。因此該二氧化石夕膜 3 0 8是流體二氧化矽膜。 接著,如第3G圖所示,該二氧化矽膜3〇8之表面以cMp (Chemical Mechanical P〇lishing raeth〇d)方法磨平和平 坦化。此時’部分的先前形成之二氧化矽膜3〇5、3 〇6及 307被研磨和移除。而以蝕刻進行之平坦化,在鋁配線層 之凸面體303a上所形成之二氧化矽膜3〇5並未被全部移 除。 後,如第3H圖所示,形成一二氧化矽膜3〇9於該平 坦化之表面上。該二氧化矽膜30 9係與前述多孔二氧化矽 膜30 6相似,以低壓化學氣相沈積及低壓電漿化學氣相沈 積形成。也就是該二氧化矽膜3 〇 9係使用如第丨〇圖所示之 脈動(pulse)電漿於氬氣體中,以反應氣體Si扎以及〇2, 亚保持該矽基材3 01於40 0 °c下形成。在使用低壓化學氣相 沈積之腔至中,壓力為lT〇rr。該壓力比使用低壓電漿化 學氣相沈積法之腔室(2· 〇 Torr)低。 接著,如第3 I圖所示,以電漿處理該多孔二氧化矽膜 309。因此在孔隙之内表面中脫落之§丨—〇鍵被η鍵取 代。結果,該膜之抗水氣吸收性增加。 在該基材30 4上形成具有良好抗熱性、抗水氣吸收性 "43115 (16) 五、發明說明 氏"電4數之中間層絕緣膜係由上述所形成之二氧化矽 所纟〇5、(該底層絕緣膜)3〇6、3〇7及3〇9 (該覆蓋絕緣膜) ,成。也就是說,該二氧化矽膜3 〇 6和3 〇 9係為多孔,因 =该二氧化石夕膜306及309之介電常數為2.〇至U。該介電 吊> 數值比典型之無孔二氧化矽膜之介電常數4 · .〇要低。而 且’該多孔二氧化石夕膜3 〇 6及3 0 9係以氫電漿處理,因而可 改善其抗水氣吸收性。而且該二氧化矽膜3 〇 5、3 0 6、3 0 7 及3 0 9之抗熱性比有機絕緣膜好。
如上所述之實例,以S i H4及02作為反應氣體是為了形 成該多孔二氧化矽膜306及3 09。然而,亦可使用其他反應 氣體形成與上述實例相似之多孔二氧化矽膜。該等反應氣 體如: S i Η化合物+ 02、 S i Η 化合物 + 03 + 02、
Si -C-0-Η化合物+〇2、或 Si -C-0-Η 化合物 + 03 + 02。
如上所述之SiH與Si_C-0-H化合物,化學式5111211+2可 使用為8111化合物。化學式81(〇1〇11114_11({^(:111112111+1(111二1,2), nM〜4)可使用為Si_C_0_H化合物。 上述之組成適用於以下之實施例。 (d) ·第4實施例 第4實施例係將第3實施例施加於刻紋製程而得。 第5 A〜5 Μ圖係說明第4實施例之剖面圖。第4圖奉示S i H4、〇
第19頁 543115 五、發明說明(17) 2、氬流量及施加於第3實施例之腔室之RF電力與時間之關 係。 首先’如第5A圖所示,形成一BPSG膜402於一矽基材 401上。於該BPSG膜402上形成一鋁層,再將該鋁層圖案化 而形成一鋁配線層403。一基材404包括該矽基材4〇1、該 BPSG膜402以及該鋁配線層4 03。 接著如第5B圖所示,一具有厚度1〇〇ηιη之二氧化矽膜 4 0 5 (該底層絕緣膜)形成於該鋁配線層4 〇 3之上。該二氧 化矽膜405係使用反應氣體Si^和〇2,在1 Τ〇ΓΓ壓力下,保 持該矽基材4 01於4 00 °C,以低壓電漿化學氣相沈積形成。 再如第5C圖所示,形成一多孔二氧化矽膜4〇6於該二 氧化砍膜4 0 5 (該底層絕緣膜)之上。該二氧化碎膜4 〇 6係 以如第4圖所示,施加一 RF電力於腔室中和使用si2H4及02 為反應氣體,並將該矽基材401保持在400 °c所形成。如第 4圖所示,在形成膜的過程中,該Si H4及〇2之流量是固定 的,但該RF電力是以每1 0秒一循環施加於該腔室中。因此 電漿係以每1 0秒之循環產生及消失。產生電襞時,於腔室 中引入氬,以控制腔室中之壓力。使用隨著時間變化之電 漿,可在一腔室中重複低壓化學氣相沈積和低壓電漿化學 氣相沈積之製程。例如第4圖中,在0〜5秒中無電聚產生, 因此其製程為低壓化學氣相沈積。在5〜10秒中產生電漿, 製程則為低壓電漿化學氣相沈積。在此實施例中,腔室中 之壓力在低壓化學氣相沈積係為1 Torr。該壓力比在低壓 電漿化學氣相沈積之腔室中(2.0 To rr)低。而且為了要產
第20頁 543115 五、發明說明(18) 生電漿,所使用的RF電力為13· 56 MHz和400 kMHz。該低 壓化學氣相沈積和低壓電漿化學氣相沈積係以此方式進 行’因而形成該具有很多孔隙之二氧化矽膜。也就是該二 氧化矽膜406為多孔,其厚度為3〇〇 nm。 ^接著如第5D圖所示,以氫氣電漿處理·該多·孔二氧化矽 膜406。因此孔隙中内表面上之Si—〇脫離鍵被“ —H鍵所取 代,而改善該膜之抗水氣吸收性。. 如第5E圖所示’以圖案化將該二氧化矽膜4〇5 (該底 層絕緣膜)及406開放,因而形成一嵌入式槽4〇7。該嵌入 式槽4 0 7與形成於二氧化矽膜4 〇 5下之鋁配線層4 〇 3連接。 、如第5F圖所示,一二氧化矽膜4 08 (第一絕緣膜)形 成於該二氧化矽膜4〇6之上和該嵌入式槽4〇7之兩側及底 部二,二氧化矽膜408係以電漿化學氣相沈積形成。形成 於,嵌入式槽40 7兩側之二氧化矽膜4〇8可防止後來埋設於 該嵌入式槽407之銅擴散至該多孔二氧化矽膜4〇6中。該二 氧化矽膜之厚度為100 nm。
”如第5G圖所示’以等向蝕刻該二氧化矽膜(該第 、、、巴緣膜)。因此該一氧化石夕膜4 〇 8被移除,留下在喪入 式槽40 7兩側部份之二氧化矽膜4〇8。因此形成一連接鋁配 線層403之接觸孔於該嵌入式槽407底部。 接著_如第5H圖所示,形成一銅鍍層4〇9於該嵌入式槽 407和該二氧化矽膜4〇6上。形成於該嵌入式槽4〇7之銅鍍 層4 0 9係作為銅配線層。 ·. 接著’如第51圖所示,形成於該二氧化矽膜4〇6上之
543115 五、發明說明(19) 銅鍍層40 9以CMP方法研磨和移除。因此只保留位於嵌入式 槽407之銅鑛層。 隨後如第5J圖所示,形成一阻障金屬氮化鈦膜41〇於 該嵌入式槽407上。該氮化鈦膜可防止嵌入式槽4〇7中之銅 擴散至後來形成於該嵌入式槽4 〇7上之二氧化;ε夕膜。 接著如第5Κ圖所示,該圖案轉移法保留嵌入式槽4 〇7 上之氮化鈦膜41 〇a,而移除位於其他部分之氮化鈦膜 410。 '
隨後如第5L圖所示,形成一多孔二氧化石夕膜οι (該 覆盍絶緣膜)於咸二氧化碎膜406和氮化欽膜41〇a之上。 該二氧化石夕膜41 1係以與先前形成之多孔二氧化石夕膜4 〇 6相 似之重複低壓化學氣相沈積及電漿化學氣相沈積所形成。 也就疋該》—氧化石夕膜411係施加如第4圖所示之脈動電漿 (以週期性產生及消失之電漿),於氬氣體中,Si H4及02 為反應氣體,並將該矽基材401保持在400 °c。此時,為了 要產生電漿,所使用的RF電力為13.56 MHz。低壓化學氣 相沈積時,腔室中壓力為1 Tor r。該壓力比當在低壓下進 行電漿化學氣相沈積之腔室中低。該二氧化矽膜41 1之厚 度為5 0 0 nm。
接著如第5M圖所示,以氫氣電漿處理該多孔二氧化矽 膜411。因此孔隙中内表面上之si-〇脫離鍵被Si-Η鍵所取 代,而改善該膜之抗水氣吸收性。 如上所述,形成一具有良好抗熱性及抗水氣吸收性以 及低介電常數之中間層絕緣膜於該基材4〇4上。也就是該
第22頁 543115
五、發明說明(20) 二氧化石夕膜406及4U係為多孔,且其介電常數為2〇至 3.0。該介電常數比典型無孔二氧化矽膜之介電常數4. 〇 低。而且該多孔二氧化矽膜406和411係經過氫氣電漿處 理,該膜具有改進之抗水氣吸收性。而且該土氧.化矽膜 4 0 6及4 11之抗熱性比有機絕緣膜好。 上述實例中’為了形成該多孔二氧化石夕膜4〇6及川, 反應氣體係使用Si &及%。然而亦可使用其他反應氣體形 成類似之多孔一氧化石夕膜。該等反應氣體如: S i Η化合物+ 02、 S i Η化合物+ 03、
Si-C-0-Η化合物+ 02、或 Si-C-Ο-Η 化合物 + 03。 (e ) ·第5實施例 第6 A〜6 J圖係說明第5實施例之剖面圖。第7圖係表示 形成一有機膜之反應氣體(一 CH化合物)流量、形成該二氧 化石夕膜之反應氣體(S i扎)流量及用來控制第5實施例中壓 力之氣體(氬)流量與時間之關係。 首先,如第6A圖所示,形成一BPSG膜502於一矽基材
501上。於該BPSG膜502上形成一銘層,再將該|呂層圖案轉 移化而形成一铭配線層503。因而形成一基材504包括該石夕 基材501、該BPSG膜502以及該鋁配線層503。 接著如第6B圖所示,一具有厚度1〇〇 nm之二氧化石夕膜 505 (該底層絕緣膜)形成於該鋁配線層503之上。該二氧 化矽膜5 0 5係使用反應氣體S i H4和〇2,在1 T 〇 r r壓力下,保
第23頁 543115 五、發明說明(21) 持該發基材5 01於40 (TC,以低壓化學氣相沈積形成。 再如第6C圖所示,在si 〇2膜505上以沈積有機膜與Si 02 膜形成一膜506。具有有機膜與Si 〇2膜交替之膜506係以交 替引入形成有機膜之反應氣體及形成Si 02膜之反應氣體於 腔室中,其中施加之Rf電力頻率為13. 56 MHz及400 kMz。 該S i 〇2膜係形成於該膜5 0 6之最上層。例如,第7圖中,在 0〜5秒中係形成Si〇2膜;在5〜1 〇秒中係形成有機膜。在此 貫施例中’係以TE〇S(Tetra-Ethyl - Ortho-Silicate)或 S1 (CH3 )札為反應氣體形成有機膜,及以s i H4為反應氣體形 成S i 02膜。 隨後如第6D圖所示,以氧氣電漿將具有有機膜及二氧 化矽膜交替形成之該膜506灰化。因此該有機膜被氧化, 使孔隙形成於有機膜所形成之區域。接著具有有機膜及二 氧化矽膜交替形成之該膜50 6被轉換成一多孔Si 02膜507。 接著如第6E圖所示,以氫氣電漿處理該多孔二氧化矽 膜5 07。因此孔隙中内表面上之si-〇脫離鍵被Si-H鍵所取 代,而改善該膜之抗水氣吸收性。 如第6F圖所示,以氫氣電漿處理形成一 si 〇2膜5〇8於 該多孔Si 〇2膜上。該Si 02膜508係以低壓化學氣相沈積形 成。S i H4及02為反應氣體。 如第6G圖所示,形成一二氧化矽膜509於該二氧化矽 膜508上。形成該二氧化石夕膜509是為了將表面平坦化。該 二氧化矽膜5 0 9係以TE0S及03為反應氣體,而使用化學氣 相沈積法形成。使用於該方法之〇3的密度必需足夠而能氧
HI IH
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五、發明說明(22) 化TEOS。®此該二氧化矽膜5〇9是一流體二氧化 。 該二氧化矽膜509之表面係以CMp方法研磨及平面化。 此時,該一二氧化矽膜(底層絕緣膜)5〇5、該二氧化矽膜 507及之丽形成之該二氧化矽膜5〇8之部分被移 以⑽進行平坦化,並未全部移除在紹配線層之凸面體、 503a上所形成之二氧化矽膜5〇5。 、 接著如第61圖所示,於該平坦化之表面形成一多孔 Si 〇2膜510。該Si〇2膜5 10係以與先前形成之該 =7相同方法形成。也就是交替形成有機膜與叫㈣以 父曰引:形成有機膜之反應氣體及形成叫膜之反應氣體 於腔室中,其中施加之Rf電力頻率為1 3 56 〇2及4〇〇 kMz。之後再以氧氣電漿處理所得膜而灰化。 因此該有機膜被氧丨’使孔隙形成於有機膜所形成之 區域’結果形成該多孔叫膜51()。此實施例巾,形成有 機膜之反應氣體為含有CH化合物,而叫及〇2係形 膜之反應氣體。 2 冬接著如第6 J圖所示,以氫氣電漿處理該多孔二氧化矽 膜510。因此孔隙中内表面上之。一〇脫離鍵被^^鍵所取 代’因而可改善該膜之抗水氣吸收性。
以上述方法形成一具有良好抗熱性及抗水氣吸收性以 及低介電常數之中間層絕緣膜於該基材5〇4上,以及Si〇2 膜505 (底層絕緣膜)、5〇7、5〇8及51〇。也就是該二氧2化 矽膜507及510係為多孔,且其介電常數為2〇至3〇。砝介 電#數比典型無孔_氧化石夕膜之介電常數要低。而且
543115 五、發明說明(23) 該多孔二氧化矽膜5〇7及510係铖矾与a 有改it e $ π ^ ^ 係、,二過虱軋電漿處理,該膜具 乃κ運之抗水乳吸收性〇 — 50« ^ ςι n ^ ^ ^ LL 肉立 4 一乳化矽膜505、5 07、 5 1 0之抗熱性比有機絕緣膜好。 交秩ΐ Γ二:I ’為了形成該多孔二氧化矽膜5 0 7及51 0, 〇曰 至之反應氣體係使用含CH之化合物、SiH4及 並不限於上述所列之反應氣體。例如 了以含CF之化合物代替t沭夕ς i η 卞 〇·π _ 曰上11之3 1 Η4,而形成多孔含氟之 b 1 〇2 膜 〇 在上述之CH化合物及⑶化合物中,化學式
使用為CH化合物。化學^nSl(〇R)4n (R = c九+1 & =/2),U為卜4),典型的例如FSi(OC2H5)3,或可使用 含蛱以及氟之化合物為CF化合物。 上述之組成適用於以下之實施例。 — 除此之外,上述之第3〜5實施例,如第1Η圖所示之覆 盖絕緣膜109可取代該多孔絕緣膜3〇9、411及51 〇。 而且上述之第1、2實施例中,第3〜5實施例之該多孔 絕緣膜30 9、411及510可代替覆蓋絕緣膜1〇9。 (2 )·根據本發明之第6實施例說明一半導體製造裝置
以下將參考第4、7及8圖說明根據第6實施例之半導體製造 裝置。 第8圖係表示根據第6實施例之一半導體製造裝置之構 造。圖中’數字613表示形成薄膜之腔室;數字611表示氣 體入口,用來導入反應氣體至腔室613。數字615係表示晶 圓’數字6 1 2則表示氣體發射器,將反應氣體規則地散佈
第26頁 543115 五、發明說明(24) 於晶圓615上。數字614係一具有加熱器之晶圓支 字616為排放腔室6 13中反應氣體之氣體出口。 …數 數字610為一連接至氣體入口 611之管路。分 606、6 07、6 08及6 09則連接至管路61〇之上游、。1亥八总 606係提供氬氣體。該分管路6〇7則提供含邙之化; 路608則提供%。該分管路6〇9提供以心。此外",控制/ 流里之裝置(means controiiing the flQw Μ。· | MFCs)則設置在該等分管路之中。控制裝置6l〇則將控制 號619、620、621及622輸入於MFCs中。該等控制信^传^ 制反應氣體之流量為所需之值。 說保控 一數字618表示一提供具有13· 56 MHz頻率之RF電力之 咼頻電源,其位於氣體出口 612及腔室613間。數字Η?為 一開關裝置,用來控制提供於腔室中之高頻電源6丨8 生的RF電力。 624表示一提供具有4〇〇 MHz頻率之RF電力之高頻電 源’其位於基材架61 4及腔室6 1 3間。6 2 5為一開關裝置, =來控制提供於腔室613中之高頻電源624所產生的心電 控制裝置60 1將控制信號623及6 26分別輸入於開關裝 置617及625中,以控制施加RF電力之時間。 第4、7圖表示控制裝置6〇1所控制之反應氣體之流量 及施加RF電力之時間。 如第4圖所示,在形成膜過程中,在控制信號6 1 9、· 621及6 22之控制下,將MFC 602 (提供氬)、MFC 6 04 (提 543115 五、發明說明(25) 供〇2 )及MFC 6 0 5 (提供Si H4 )保持打開狀態,以持續引入 氬、〇2及S i H4於腔室中。既然反應氣體持續地由氣體出 口 6 1 6排放出去,腔室6 1 3則保持在低壓狀態。在5〜1 〇秒之 間’控制信號62 3及626將開關裝置6 17及625打開,以施加 頻率為13.56 MHz及40 0 MHz之RF電力。因此在5〜10秒之 間,該電漿化學氣相沈積係在低壓下以及氬、〇2和S i h4氣 體中進行。
另一方面,圖中1 0〜1 5秒之間,該等開關裝置6 1 7及 6 2 5是關閉的,因此並無施加rf電力於腔室6 1 3中,低壓化 學氣相沈積則是在〇2及S i H4氣體中進行。1 5秒之後,則交 替進行電漿化學氣相沈積於低壓下及低壓化學氣相沈積。 如第3、4實施例所述,低壓下之電漿化學氣相沈積及 低壓化學氣相沈積是在氬、〇2及8 i u4氣體中重複進行,其 中該Si 02膜可形成於該基材上。 第7圖則表示另一控制裝置601所控制之反應氣體流量 之實例。 曰 > 該圖中,只有改變反應氣體之流量,RF電力則以固定 里鉍加於該腔室中,因為形成膜的過程中,該等開關裝置 6 1 7及6 2 5持續在控制信號6 2 3及6 2 6之控制中。圖中所示〇2 及氮流量隨時間之改變,是因為MFC 604 (提供〇2 )及MFC 6〇2 (提供氬)是由控制信號619及621控制。 人在圖中5〜10秒間,以控制信號62〇打開肝〇 603 (提供 sCF之化合物)’導入含CH之化合物於施加rf電力之腔室 中同日守’ MFC 60 5 (提供Si H4 )則以控制信號6 22關閉。
第28頁 543115 五、發明說明(26) 因此腔室中氣體改為含CH化合物與〇2,且於晶圓615上形 成一有機膜。 另一方面’在1〇〜15秒間,以控制信號620關閉MFC 提供含CH之化合物),以停止提供含合物於 腔室中。同時以控制信號62 2打開MFC 605 (提供SiH4 ), 因此提供Si^氣體於腔室中。接著在〇2及“扎氣體中4,以 電襞化學氣相沈積於該晶圓6 1 5上形成該S i 〇2膜。1 5秒 後’父替重複形成該有機膜及該S i A膜之步驟,而在晶圓 615交替形成該有機膜及Si〇2膜。 日曰、
如第5實施例所示,以氧氣電漿將具有有機膜及si〇^ 膜交替之膜灰化,以選擇性地移除該有機膜,而形成咳2多
第29頁

Claims (1)

  1. 543115 修正本 案號 89100038 六、申請專利範圍 1 . 一種用來形成中間層絕緣膜之方法,包括下列步 驟: 藉由使用包括氧化氣體和選自S i2 H6和S i3 H8所組成群組 之一者之反應氣體的化學氣相沈積法,在一基材上形成一 多孔二氧化矽膜。 2. 如申請專利範圍第1項所述之方法,其中該反應氣 體更包括一選自氟以及硼所組成群組之化合物。 3. 如申請專利範圍第1項所述之方法,其中該氧化氣 體為氧或臭氧。
    543115 _案號89100038_年月日_iii_ 六、申請專利範圍 引入氧化氣體和選自由含SiH化合物以及含Si-C-〇-H 化合物所組成群組之一者,以當作反應氣體; 在低壓下週期性或間歇性產生電漿;以及 以電漿化學氣相沈積來使該反應氣體反應,以形成多 孔二氧化咳膜於基材上。 9 .如申請專利範圍第8項所述之方法,其中該含S i Η化 合物為S i Η4。 1 0.如申請專利範圍第8項所述之方法,其中該氧化氣 體為氧或臭氧。 1 1.如申請專利範圍第8項所述之方法,其中電漿產生 < 之狀態之該反應氣體之壓力高於無電漿產生之狀態之該反 ® 應氣體之壓力。 1 2.如申請專利範圍第8項所述之方法,其中該多孔二 氧化矽膜形成後,以氫氣電漿處理該多孔二氧化矽膜。 1 3.如申請專利範圍第8項所述之方法,其中該多孔二 氧化矽膜形成後,再於該多孔二氧化矽膜上方形成覆蓋絕 緣膜。 1 4.如申請專利範圍第8項所述之方法,更包括下列步 驟: 在該基材上形成多孔二氧化矽膜,再以圖案轉移法形 ¥ 成叙入式槽於該多孔二氧化石夕膜; 在該嵌入式槽兩側形成側壁絕緣膜; 在該嵌入式槽中鑲嵌金屬膜;以及 在該金屬膜上形成阻障金屬層。 1 5.如申請專利範圍第1 4項所述之方法,其中該側壁
    2060-2966-pf3.ptc 第31頁 543115 案號 89100038 年 曰 修正 六、申請專利範圍 絕緣膜係以下列步驟形成: 形成該嵌入式槽,再於該中間層絕緣膜上、該嵌入式 槽兩側以及該嵌入式槽底部形成一第一絕緣膜;以及 非等向性蝕刻該第一絕緣膜以致保留在該嵌入式槽兩 側之該第一絕緣膜,而移除在該嵌入式槽之底部之該第一 絕緣膜。 1 6. —種用來形成中間層絕緣膜之方法,包括下列步 驟:
    以電漿化學氣相沈積交替形成薄膜(1 a m i n a t i n g)有機 膜和二氧化矽膜於基材上,其中該基材交替重複暴露於含 CH化合物之反應氣體和含SiH化合物及氧之反應氣體中; 以及 在該基材上,以選擇性灰化(ashing)移除該有機膜而 形成多孔二氧化矽膜。 1 7.如申請專利範圍第1 6項所述之方法,其中該灰化 是以氧氣電漿進行。 1 8.如申請專利範圍第1 6項所述之方法,其中該多孔 二氧化矽膜形成後,將該多孔二氧化矽膜以氫氣電漿處 理〇
    1 9.如申請專利範圍第1 6項所述之方法,其中在基材 上交替形成該有機膜和該二氧化矽膜之前,先於該基材上 形成底層絕緣膜。 2 0. —種形成中間層絕緣膜之方法,包括下列步驟: 以電漿化學氣相沈積交替形成有機膜和含氟之二氧化 矽膜於基材上,其中該基材交替重複暴露於含CH化合物之
    2060-2966-pf3.ptc 第32頁 543115 _案號89100038_年月曰 修正_ 六、申請專利範圍 反應氣體和含S i Η化合物及氧之反應氣體中;以及 在該基材上,以選擇性灰化移除該有機膜而形成含氟 之多孔二氧化矽膜。 2 1.如申請專利範圍第2 0項所述之方法,其中該灰化 步驟是以氧氣電漿進行。 2 2.如申請專利範圍第2 0項所述之方法,其中該多孔 二氧化矽膜形成後,將該膜以氫氣電漿處理。 2 3.如申請專利範圍第2 0項所述之方法,其中在基材 上交替形成該有機膜和該二氧化矽膜之前,先於該基材上 形成底層絕緣膜。 I 2 4. —種形成中間層絕緣膜之裝置,包括: I 腔室,用來形成膜; 管路,輸送反應氣體至該腔室; 流量控制裝置,設置於該管路,用來控制該反應氣體 之流量; 高頻發電裝置,提供高頻電力至該腔室; 開關裝置,開或關傳送至該腔室之高頻電力;以及 控制裝置,控制該流量控制裝置和該開關裝置。 2 5.如申請專利範圍第2 4項所述之裝置,其中該控制 裝置控制該流量控制裝置,因而間歇性和週期性改變該反 4 應氣體之流量。 2 6.如申請專利範圍第2 4項所述之裝置,其中該控制 裝置控制該開關裝置,因而間歇性和週期性改變施以該腔 室之南頻電力。 2 7.如申請專利範圍第2 6項所述之裝置,其中該反應
    2060-2966-pf3.ptc 第33頁 543115 案號 89100038 曰 修正 六、申請專利範圍 氣體為氧化氣體及含SiH之化合物。 2 8.如申請專利範圍第2 7項所述之裝置,其中該含S i Η 之反應氣體為S i Η4。 2 9.如申請專利範圍第2 6項所述之裝置,其中該反應 氣體為氧化氣體及選自含Si-C-0_H之化合物及含CH之化合 物所組成之組群中之一者的氣體。 3 0.如申請專利範圍第2 9項所述之裝置,其中該氧化 氣體為02或03。
    2060-2966-pf3.ptc 第34頁 543115 第89100〇38號圖式修正頁 修正日期:92,4.9 A- (UJ00530¥^-His EOOS) ο ¥疙Ί ‘ 个 ^ A-^——^ A-01---ο eoos)6001009 一3009¾(ΜΚΝΗΗ00 寸)drag(NIis9rnydra 5 10 (Τ,) (Τ2) (Τ3) /l\ 間 時 時間(秒) 時間(秒) 時間(秒) 時間(秒) ◊ 第4圖
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