TW201308483A - 半導體製造裝置之原料氣體供給裝置 - Google Patents
半導體製造裝置之原料氣體供給裝置 Download PDFInfo
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- 239000002994 raw material Substances 0.000 title claims abstract description 70
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000004065 semiconductor Substances 0.000 title claims description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims description 241
- 239000000463 material Substances 0.000 claims description 48
- 238000003860 storage Methods 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 38
- 230000008569 process Effects 0.000 claims description 31
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 30
- 239000011344 liquid material Substances 0.000 claims description 29
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 22
- 229910052786 argon Inorganic materials 0.000 claims description 15
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical group Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 15
- 238000012545 processing Methods 0.000 abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 abstract description 4
- 239000012159 carrier gas Substances 0.000 description 15
- 238000012937 correction Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- 238000000231 atomic layer deposition Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
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- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
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- 238000011105 stabilization Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
達成可以不使用載氣體而僅對液體原料氣體之蒸氣、亦即原料氣體,進行高精確度之流量控制之同時,可以穩定地供給至製程腔室,同時可以達成原料氣體供給裝置之構造之簡素化及小型化。由以下構成:液體原料氣體供給源;上述液體原料氣體之貯存用的來源貯槽;氣體流通路,用於由上述來源貯槽之內部上方空間部,將液體原料氣體蒸氣、亦即原料氣體供給至製程腔室;自動壓力調整器,係設置於該氣體流通路之上流側,用於將供給至製程腔室的原料氣體之供給壓保持於設定值;供給氣體切換閥,係設置於上述氣體流通路之下流側,用於對原料氣體之供給至製程腔室的通路進行開關;孔部,係設置於該供給氣體切換閥之入口側與出口側之其中至少一方,用於調整供給至製程腔室的原料氣體之流量;及恆溫加熱裝置,用於將上述來源貯槽、上述氣體流通路、供給氣體切換閥及孔部加熱至設定溫度;係將自動壓力調整器之下流側之原料氣體之供給壓控制成為所要之壓力之同時,將設定流量之原料氣體供給至製程腔室。
Description
本發明關於藉由所謂ALD法對半導體製造裝置進行氣體供給的裝置之改良,關於在製程腔室內可以高精確度進行複數之處理用氣體(原料氣體)之流量控制之同時,迅速而且正確進行切換供給的半導體製造裝置之原料氣體供給裝置。
所謂ALD(Atomic layer Deposition)法,係基於良好的熱歷程或階梯覆蓋性而廣泛應用於半導體製造之成膜製程。
而且,該ALD法係將2種類以上之原料氣體或液體原料氣體之蒸氣流交互供給至製程腔室內,藉由晶圓等之表面之化學反應進行成膜者,所謂可藉由1時程(sequence)以高精確度形成1原子層相當之膜厚。
其中,以四氯化鈦(TiCl4)及氨(NH3)作為前驅體使用的氮化鈦(TiN)之成膜,對於半導體製造乃重要的製程,四氯化鈦(TiCl4)之供給流量之控制精確度對於氮化鈦之膜厚或品質有大的影響。
因此,習知針對四氯化鈦(TiCl4)等之原料氣體之供給有開發出各種之技術,例如於圖4之原料氣體供給裝置(專利第4605790號),係由載氣體源21通過壓力調整器22、質流控制器23而使載氣體G1’供給至來源貯槽(
source tank)25內,液體原料24之蒸氣G2’和載氣體G1’之混合氣體G0’係通過壓力控制閥CV及開關閥V1被供給至製程腔室29內,藉由壓力控制閥CV及開關閥V1之開關控制,而控制氣體G0’對製程腔室29之供給。
又,於圖4,27為來源貯槽25之內壓部壓力之自動壓力調整裝置,係藉由來自管路L內之壓力及溫度之檢測值進行貯槽內壓之運算,以朝向和由端子28輸入的設定壓力間之差成為零的方向進行壓力控制閥CV之開關控制,而將來源貯槽內壓保持於設定值。
又,26為恆溫加熱部,30為加熱器,31為晶圓,Gn’為另一原料氣體,Vn為另一原料氣體Gn’之開關閥。
於上述圖4之原料氣體供給裝置,首先,供給至來源貯槽25內的載氣體G1’之壓力係藉由壓力調整器22設定成為特定壓力值PG1,又,其之供給流量係藉由熱式質量流量控制裝置(質流控制器)23設定成為特定流量值。另外,來源貯槽25之部分等係被加熱保持於約150℃之高溫度。
藉由載氣體G1’之供給量、來源貯槽25之溫度、及來源貯槽25之內部壓力(混合氣體G0’之壓力)分別被保持於設定值,使通過壓力控制閥CV之一定混合比的一定流量之混合氣體G0’,被進行高精確度控制成為和熱式質量流量控制裝置23之設定流量呈比例的特定之流量值之同時被供給,藉由開關閥V1之開放而被供給至製程腔室29。
圖5係表示此種原料氣體供給裝置之另一例,藉由載氣體G1’之發泡作用使來源貯槽25內之液體原料氣體(TiCl4)蒸發之同時,使載氣體G1’、原料氣體蒸氣G2’以及伴隨著載氣體的原料氣體粒子的混合體G0流入汽化器35,使汽化後之混合氣體G0’經由緩衝貯槽33供給至閥開關機構34,藉由閥V1開.閉控制(ON.OFF控制),使特定量之混合氣體G0’被供給至腔室29內。
又,於圖5,上述來源貯槽25內之液體原料氣體(TiCl4)24係被加熱至約100℃(蒸氣壓269Torr),汽化器35係被加熱至約200℃,各緩衝腔室33(內容積約500~1000cc)係被加熱至約170℃,閥開關機構34係被加熱至約200℃。
又,混合氣體(TiCl4+載氣體)G0’之供給流量為約20sccm,氬(Ar)及氨(NH3)之供給壓為0.15PaG,之供給流量分別為約10SLM。另外,製程腔室29之內容積為500~1000cc,內壓被保持於1Torr以下。
對上述腔室29之原料氣體之供給時,係藉由閥開關機構34內之開關閥V1~Vn之依序以特定時間間隔進行ON.OFF(例如TiCl4時,開時間約0.2秒,閉時間約0.93秒),而於特定之內壓下使各緩衝貯槽33內貯留的原料氣體,每次以特定量依序進行各原料氣體之供給,而進行1循環之成膜。
於上述圖4所示氣體供給裝置,係藉由來源貯槽內自動壓力調整裝置27將來源貯槽25內之空間部壓力(混合
氣體G0’之壓力)保持於設定值,因此即使不使用緩衝貯槽33,亦可以對特定量之原料氣體G0’進行高精確度之流量控制之同時,供給至閥開關機構(開關閥V1)34。
又,於圖5之原料氣體供給裝置,亦使用緩衝貯槽33,因此不存在所供給的各原料氣體G0’,GAr,GNH3之壓力變動,可將特定流量之各原料氣體透過閥開關機構34供給至腔室29內,達成良好效用。
但是,習知之圖4及圖5所示氣體供給裝置亦有待解決之諸多問題點。
首先,於圖4及圖5之氣體供給裝置,係使用載氣體G1’以液體原料氣體24之蒸氣G2’作為原料氣體而供給至製程腔室29,無法直將僅將液體原料氣體24之蒸氣G2供給至製程腔室29,結果,混合氣體G0’內之原料氣體G2’之濃度管理麻煩,高精確度之原料氣體G2’之供給量控制成為困難之問題存在。
又,於圖4之氣體供給裝置,一.因為使用高價位之熱式質量流量控制裝置23,原料之汽化供給裝置之製造成本之降低難以達成,而且需要對熱式質量流量控制裝置23之載氣體之供給壓進行高精確度控制,壓力調整器22之設備費增加,無法直接藉由熱式質量流量控制裝置23進行混合氣體G0’之流量控制,二.屬於發泡方式,固體原料或低蒸氣壓之原料時難以進行穩定的原料蒸氣之供給,對製程腔室之混合氣體供給容易變為不穩定,三,受到來源貯槽內之原料液面之變動影響,混合氣體G0’內之原料
蒸氣G2’之濃度大幅變動,原料蒸氣G2’之濃度之控制困難,四.入口側之載氣體之流量與出口側之混合氣體之流量(全流量)不同,混合氣體流量之高精確度之流量控制困難,五,來源貯槽之內壓之高精確度之控制不容易,結果,和貯槽內之混合氣體內之原料蒸氣之分壓直接由關係的原料濃度之調整變為不容易等之問題存在。
另外,於圖5之氣體供給裝置,除上述圖4之氣體供給裝置之一~五等之問題以外,設於開關機構34的開關閥V1係作為膜衝驅動閥,藉由其之開關切換時間調整,而進行原料氣體G0’之供給量控制之構成,因此高精確度之流量控制困難,另外,開關閥V1之保養管理手續麻煩,另外,為達成原料氣體G0’之供給壓之穩定化,而需要緩衝腔室33,無法達成裝置之小型化之問題存在。
〔專利文獻1〕專利第4605790號
〔專利文獻2〕特開2009-226408號
本發明係為解決習知之圖4及圖5之氣體供給裝置之上述問題,亦即一.無法僅單獨針對原料氣體,進行高精確度之流量控制之同時,進行穩定供給,二.因為構成為
藉由設於製程腔室附近的脈衝驅動閥之開關控制,來控制原料氣體之供給流量,導致高精確度之流量控制成為困難,三.基於使用緩衝腔室、或使用熱式流量控制裝置,而導致原料氣體供給裝置之更進一步小型化或低成本化成為困難等之問題,提供可以不使用載氣體而僅單獨對原料氣體,而且不使用熱式流量控制裝置或流量控制用脈衝閥,藉由設於原料氣體通路內的自動壓力調整裝置進行2次側氣體流通路內之原料氣體壓力之調整,以及孔部(orifice)之使用,可以高精確度進行流量控制之同時,可以穩定進行原料氣體之供給的原料氣體供給裝置。
請求項1之發明之基本構成如下,係由以下構成:液體原料氣體供給源;上述液體原料氣體之貯存用的來源貯槽;氣體流通路,用於由上述來源貯槽之內部上方空間部,將液體原料氣體蒸氣、亦即原料氣體供給至製程腔室;自動壓力調整器,係設置於該氣體流通路之上流側,用於將供給至製程腔室的原料氣體之供給壓保持於設定值;供給氣體切換閥,係設置於上述氣體流通路之下流側,用於對原料氣體之供給至製程腔室的通路進行開關;開口部,係設置於該供給氣體切換閥之入口側與出口側之其中至少一方,用於調整供給至製程腔室的原料氣體之流量;及恆溫加熱裝置,用於將上述來源貯槽、上述氣體流通路、供給氣體切換閥及開口部加熱至設定溫度;係將自動壓力調
整器之下流側之原料氣體之供給壓控制成為所要之壓力之同時,將設定流量之原料氣體供給至製程腔室。
請求項2之係於發明請求項1之發明中,將液體原料氣體設為四氯化鈦(TiCl4)。
請求項3之發明係於請求項1之發明中,將開口部設於供給氣體切換閥之入口側。
請求項4之發明係於請求項1之發明中,藉由恆溫加熱裝置將來源貯槽加熱至100℃~250℃之溫度。
請求項5之發明係於請求項1之發明中,藉由恆溫加熱裝置將氣體流通路、自動壓力調整器、開口部及切換閥加熱至100℃~250℃之溫度。
請求項6之發明係於請求項1之發明中,和原料氣體之氣體流通路並列,而分別設置氬氣體之供給用的氣體流通路及氨氣體之供給用的氣體流通路。
於本發明,係將來源貯槽之溫度保持於設定值之同時,藉由自動壓力調整裝置針對由來源貯槽之內部上方空間部被導出的液體原料氣體之蒸氣、亦即原料氣體G1對於製程腔室之供給壓力進行控制,將自動壓力調整裝置之二次側氣體流通路內之原料氣體壓保持於所要之設定壓之同時,使原料氣體G1經由開口部被供給至製程腔室而構成。
結果,於不使用載氣體之情況下,可以僅對液體原料
氣體G1進行高精確度之流量控制之同時進行供給,可達成原料氣體G1穩定之供給,可以大幅提升流量控制性。
又,原料氣體G1之流通路係由自動壓力調整裝置、開口部供及給氣體切換閥構成,構成變為簡單,可達成使半導體製造裝置之原料氣體供給裝置之大幅小型化之同時,液體原料氣體之使用量之判別容易,而且藉由孔部切換原料氣體之供給時之不同種氣體之逆流可以被有效防止。
另外,藉由自動壓力調整裝置將原料氣體G1之供給壓保持於一定,而且適當選擇開口部之口徑之同時,藉由進行來源貯槽或原料氣體G1之溫度調整,可對原料氣體G1之供給流量進行極為高精確度之控制,可以實現所謂成膜工程之高性能化或半導體製品之大幅之品質提升。
以下參照圖面說明本發明之實施形態。
圖1係表示本發明之實施形態之原料氣體供給裝置之構成系統圖,該原料氣體供給裝置,係由以下構成:液體原料貯槽1,液體原料流量計測器2,液體原料供給閥3,液體原料氣體4,來源貯槽5,原料氣體出口閥7,對供給至製程腔室11的原料氣體流通路9之內部壓力進行控制的自動壓力調整裝置6,對供給至製程腔室11的氣體G之供給流量進行調整的開口部(於此係使用孔部)8,氣體流通路9,供給氣體切換閥10,對氣體流通路9或來源貯槽5等進行加溫的恆溫加熱裝置15。
又,於圖1,除液體原料貯槽1以外,亦設置氨氣體貯槽1G2,氬氣體貯槽1G3,其他之氣體貯槽1Gn,於各氣體流通路9G2、9G3、9Gn分別設置自動壓力調整器6G2,6G3,6Gn,孔部8G2,G3,8Gn,供給切換閥10G2,10G3,10Gn,分別進行對製程腔室7之原料氣體G1,G2,G3,Gn之切換供給。
參照圖1,液體原料氣體4係由液體原料貯槽1經由流量計測器2,液體原料供給閥3被供給至來源貯槽5內,於此藉由恆溫加熱裝置15加熱至特定溫度之狀態下予以貯留。
又,本實施例之液體原料氣體之1係使用四氯化鈦(TiCl4),以下,液體原料氣體4係以TiCl4進行說明。
來源貯槽5內之液體原料氣體4,係藉由對來源貯槽5加熱至約100℃~110℃,而產生該加熱溫度中之液體原料氣體4之飽和蒸氣壓(例如100℃,269Torr)之蒸氣G1,而充滿來源貯槽5之內部上方空間5a內。
產生的液體原料氣體4之飽和蒸氣G1係經由原料氣體出口閥7流入自動壓力調整器6G1,藉由自動壓力調整器6G1調整成為特定之設定壓,經由孔部8G1,原料氣體供給切換閥10G1被供給至製程腔室11。
上述自動壓力調整器6G1,係設置於來源貯槽5之原料氣體G1之出口側附近,針對來源貯槽5內之原料氣體G1之於自動壓力調整器6G1之2次側之壓力,進行自動調整使成為特定設定值。亦即,如圖2所示,自動壓力調整
器6G1之流出側之原料氣體G1之壓力P1及溫度T1進行檢測之同時,使用該檢測壓力P1及溫度T1而於運算控制部12進行溫度補正,進行補正成為現實之高溫混合氣體G1之壓力的運算,另外,對該運算之原料氣體G1之壓力值Pt,與來自設定輸入端子13之設定壓力值Ps進行比對,以使兩者之偏差Pd朝向成為零的方向實施控制閥V0之開關控制。
又,圖2係表示自動壓力調整器6G1之區塊構成,該運算控制部12,係由溫度補正電路12a,比較電路12b,輸出入電路12c及輸出電路12d等構成。
亦即,來自壓力檢測器P1及溫度檢測器T1之檢測值係被轉換為數位信號而輸入至溫度補正電路12a,於此將檢測壓力P1補正成為檢測壓力Pt之後,輸入至比較電路12b。又,設定壓力之輸入信號Ps係由端子13輸入,於輸出入電路12b進行數位值轉換之後,輸入至比較電路12b,於此當比起實施上述溫度補正電路12a之溫度補正後的檢測壓力Pt更大時,係對控制閥V0之驅動部輸出控制信號Pd。如此則,控制閥V0被驅動成為朝閉鎖方向,在設定壓力輸入信號Ps與溫度補正後的檢測壓力Pt之差Pd=Ps-Pt成為零為止朝向閉閥方向被進行驅動。
又,反之,當上述設定壓力輸入信號Ps小於溫度補正後的檢測壓力Pt時,係對控制閥V0之驅動部輸出控制信號Pd,使控制閥V0被驅動成為朝開閥方向。如此則,在兩者之差Ps-Pt成為零為止被連接成為朝向開閥方向之
驅動。
藉由自動壓力調整器6G1,使其之2次側之氣體壓力被保持於設定壓力的原料氣體G1,於孔部8G1,即使以和原料氣體G1之設定壓力、孔部8G1之口徑以及氣體溫度對應之特定之流量下,亦可以通過供給氣體切換閥10G1而被供給至製程腔室11。
又,於上述說明雖僅說明原料氣體G1之氣體流通路9G1之管線,但氣體流通路9G2或氣體流通路9G3等之管線除了來源貯槽5之部分以外,均和上述氣體流通路9G1時完全相同。
又,於上述說明,孔部8係設置於供給氣體切換閥10之上流側,但孔部8亦可設置於供給氣體切換閥10之下流側,或設置於下流側與上流側之兩方。
另外,液體原料氣體雖使用四氯化鈦,但亦可使用其他液體原料例如TEOS等,恆溫加熱裝置15對於來源貯槽5或氣體流通路9,供給氣體切換閥10之加熱溫度,係對應於使用的液體原料氣體之飽和蒸氣壓或原料氣體之必要流量及壓力被適宜選定。
本發明,係藉由自動壓力調整裝置6使該2次側之原料氣體之壓力及溫度被保持於設定值之同時,經由孔部8進行該流量之調整,無須如習知為了流量調整而進行供給氣體切換閥10之開度控制,簡單純進行供給氣體之切換即可。因此,可進行更高精確度之流量控制。
又,於本發明,可以僅對必要之原料氣體進行直接而
且高精確度之流量控制之下,供給至製程腔室11,可實現原料氣體流通路9等之小口徑化或簡素化之同時,無須原料氣體之濃度管理。
圖3係表示原料氣體為TiCl4,而且TiCl4氣體之流量為10sccm時之包含自動壓力調整器6G1等的氣體流通路9G1之壓力、溫度、流量等之關係,藉由設定成為來源貯槽溫度=100℃,來源貯槽內部空間5a之TiCl4氣體壓力=269Torr(100℃),自動壓力調整器6G1之上流側壓力P1=269Torr,自動壓力調整器6G1之下流側壓力P2=200Torr,孔部8G1之口徑為0.1mm ,而確認10sccm之TiCl4氣體之供給為可能。又,孔部8G1與供給氣體切換閥10G1間之距離L2設為10mm以下,又,自動壓力調整裝置6G1與孔部8G1間之距離L1設為約2m。
又,TiCl4氣體之流量係成為溫度之函數,因此藉由自動壓力調整裝置6G1之2次側控制壓P2之調節,可達成原料氣體G1之流量調整。
藉由同樣之方法,針對NH3氣體流通路9G2,針對設為NH3氣體G2=10SLM時進行檢討。結果,自動壓力調整器6G2之控制壓力P2=790Torr,溫度23℃,孔部8G2之口徑=1.0mm時,約流量10SLM之NH3原料氣體G2之供給成為可能(孔部下流壓相對於P2滿足臨界膨脹條件時)。
又,針對Ar氣體流通路9G2,在壓力調整器6G3之控制壓P2=1100Torr,溫度23℃,孔部8G3之口徑=1.0mm時,約流量10SLM之Ar氣體G3之供給成為可能(孔部
下流壓相對於P2滿足臨界膨脹條件時)。
本發明不僅作為ALD法所使用的原料之汽化供給裝置,於半導體製造裝置或化學品製造裝置等,對於由加壓貯留源對製程腔室進行氣體之供給的構成之全部氣體供給裝置均可適用。
G1‧‧‧原料氣體
G2‧‧‧氨氣體
G3‧‧‧氬氣體
Gn‧‧‧另一氣體
1‧‧‧流體原料氣體貯槽(四氯化鈦)
1G2‧‧‧氨氣體貯槽
1G3‧‧‧氬氣體貯槽
1Gn‧‧‧另一氣體種之貯槽
2‧‧‧液體原料流量計測器
3‧‧‧液體原料供給閥
4‧‧‧液體原料氣體(四氯化鈦,TiCl4)
5‧‧‧來源貯槽
5a‧‧‧來源貯槽之內部空間
6‧‧‧自動壓力調整裝置
6G1‧‧‧四氯化鈦氣體之自動壓力調整器
6G2‧‧‧氨氣體之自動壓力調整器
6G3‧‧‧氬氣體之自動壓力調整器
7‧‧‧原料氣體出口閥
7G2‧‧‧氨氣體出口閥
7G3‧‧‧氬氣體出口閥
7Gn‧‧‧另一氣體出口閥
8‧‧‧開口部(孔部)
8G1‧‧‧四氯化氣體之孔部
8G2‧‧‧氨氣體之孔部
8G3‧‧‧氬氣體之孔部
8Gn‧‧‧另一氣體之孔部
9‧‧‧氣體流通路
9G1‧‧‧四氯化鈦氣體流通路
9G2‧‧‧氨氣體流通路
9G3‧‧‧氬氣體流通路
9Gn‧‧‧另一氣體之流通路
10‧‧‧供給氣體切換閥
11‧‧‧製程腔室
12‧‧‧運算控制部
12a‧‧‧溫度補正電路
12b‧‧‧比較電路
12c‧‧‧輸入‧輸出電路
12d‧‧‧輸出電路
V0‧‧‧控制閥
13‧‧‧設定輸入端子
14‧‧‧輸出信號端子
15‧‧‧恆溫加熱裝置
P1‧‧‧G1壓力(檢測壓力)
T1‧‧‧G1溫度(檢測溫度)
Pt‧‧‧補正檢測壓力
Tt‧‧‧補正檢測溫度
Ps‧‧‧設定壓力輸入信號
Pd‧‧‧控制信號
Pot‧‧‧輸出信號
21‧‧‧載氣體源
22‧‧‧壓力調整器
23‧‧‧質流控制器
24‧‧‧液體原料氣體(TiCl4)
25‧‧‧來源貯槽
26‧‧‧恆溫加熱部
27‧‧‧來源貯槽內壓自動壓力調整裝置
28‧‧‧端子
29‧‧‧製程腔室
30‧‧‧加熱器
31‧‧‧晶圓
32‧‧‧真空泵
33‧‧‧緩衝腔室
34‧‧‧閥開關機構
35‧‧‧汽化器
G1’‧‧‧載氣體
G2’‧‧‧液體原料之蒸氣
G0’‧‧‧混合氣體
Gn’‧‧‧另一原料氣體
Cv‧‧‧壓力控制閥
V1‧V2‧V3‧‧‧開關閥
Vn‧‧‧管路
Go‧‧‧混合體
〔圖1〕本發明之實施形態之原料氣體供給裝置之構成系統圖。
〔圖2〕自動壓力調整裝置之構成說明圖。
〔圖3〕本發明之實施形態之原料氣體供給管之壓力
、溫度、流量等之一例。
〔圖4〕習知之原料氣體供給裝置之構成系統圖。
〔圖5〕習知之另一原料氣體供給裝置之構成系統圖。
G1‧‧‧原料氣體
G2‧‧‧氨氣體
G3‧‧‧氬氣體
Gn‧‧‧另一氣體
1‧‧‧流體原料氣體貯槽(四氯化鈦)
1G2‧‧‧氨氣體貯槽
1G3‧‧‧氬氣體貯槽
1Gn‧‧‧另一氣體種之貯槽
2‧‧‧液體原料流量計測器
3‧‧‧液體原料供給閥
4‧‧‧液體原料氣體(四氯化鈦,TiCl4)
5‧‧‧來源貯槽
5a‧‧‧來源貯槽之內部空間
6‧‧‧自動壓力調整裝置
6G1‧‧‧四氯化鈦氣體之自動壓力調整器
6G2‧‧‧氨氣體之自動壓力調整器
6G3‧‧‧氬氣體之自動壓力調整器
6Gn‧‧‧自動壓力調整器
7‧‧‧原料氣體出口閥
7G2‧‧‧氨氣體出口閥
7G3‧‧‧氬氣體出口閥
7Gn‧‧‧另一氣體出口閥
8G1‧‧‧四氯化氣體之孔部
8G2‧‧‧氨氣體之孔部
8Gn‧‧‧另一氣體之孔部
9G1‧‧‧四氯化鈦氣體流通路
9G2‧‧‧氨氣體流通路
9G3‧‧‧氬氣體流通路
9Gn‧‧‧另一氣體之流通路
10G1、10G2、10Gn‧‧‧供給氣體切換閥
11‧‧‧製程腔室
15‧‧‧恆溫加熱裝置
Claims (6)
- 一種半導體製造裝置之原料氣體供給裝置,其特徵為由以下構成:液體原料氣體供給源;來源貯槽,貯存上述液體原料氣體;氣體流通路,用於由上述來源貯槽之內部上方空間部,將液體原料氣體蒸氣、亦即原料氣體供給至製程腔室;自動壓力調整器,係介設於該氣體流通路之上流側,用於將供給至製程腔室的原料氣體之供給壓保持於設定值;供給氣體切換閥,係介設於上述氣體流通路之下流側,用於對原料氣體之供給至製程腔室的通路進行開關;開口部,係設置於該供給氣體切換閥之入口側與出口側之其中至少一方,用於調整供給至製程腔室的原料氣體之流量;及恆溫加熱裝置,用於將上述來源貯槽、上述氣體流通路、供給氣體切換閥及開口部加熱至設定溫度,將自動壓力調整器之下流側之原料氣體之供給壓控制成為所要之壓力之同時,將設定流量之原料氣體供給至製程腔室而構成。
- 如申請專利範圍第1項之半導體製造裝置之原料氣體供給裝置,其中液體原料氣體係設為四氯化鈦(TiCl4)。
- 如申請專利範圍第1項之半導體製造裝置之原料氣體供給裝置,其中係將開口部設於供給氣體切換閥之入口側。
- 如申請專利範圍第1項之半導體製造裝置之原料氣體供給裝置,其中 藉由恆溫加熱裝置將來源貯槽加熱至100℃~250℃之溫度。
- 如申請專利範圍第1項之半導體製造裝置之原料氣體供給裝置,其中藉由恆溫加熱裝置將氣體流通路、自動壓力調整器、開口部及切換閥加熱至100℃~250℃之溫度。
- 如申請專利範圍第1項之半導體製造裝置之原料氣體供給裝置,其中和原料氣體之氣體流通路並列,而分別設置氬氣體之供給用的氣體流通路及氨氣體之供給用的氣體流通路。
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JP2013019003A (ja) | 2013-01-31 |
CN103649367B (zh) | 2015-12-02 |
KR101567357B1 (ko) | 2015-11-09 |
TWI525734B (zh) | 2016-03-11 |
CN103649367A (zh) | 2014-03-19 |
JP5755958B2 (ja) | 2015-07-29 |
KR20140005314A (ko) | 2014-01-14 |
US20140190581A1 (en) | 2014-07-10 |
WO2013008372A1 (ja) | 2013-01-17 |
US9556518B2 (en) | 2017-01-31 |
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