JP7149739B2 - 載置台及び基板処理装置 - Google Patents
載置台及び基板処理装置 Download PDFInfo
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- 238000012545 processing Methods 0.000 title claims description 49
- 239000000758 substrate Substances 0.000 title claims description 24
- 238000012546 transfer Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 51
- 230000002159 abnormal effect Effects 0.000 description 16
- 239000002826 coolant Substances 0.000 description 6
- 230000001133 acceleration Effects 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
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- 238000000034 method Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
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- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
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Description
図1は、本実施形態に係る基板処理装置100の構成の一例を示す概略断面図である。基板処理装置100は、気密に構成され、電気的に接地電位とされた処理容器1を有している。この処理容器1は、円筒状であり、例えばアルミニウム等から構成されている。処理容器1は、プラズマが生成される処理空間を画成する。処理容器1内には、被処理体(work-piece)の一例であるウエハWを支持する載置台2が設けられている。載置台2は、基台2a及び静電チャック(ESC:Electrostatic chuck)6を有する。基台2aは、導電性の金属、例えばアルミニウム等で構成されており、下部電極としての機能を有する。静電チャック6は、セラミックス、例えばアルミナ等で構成されており、ウエハWを静電吸着するための機能を有する。載置台2は、支持台4に支持されている。支持台4は、例えば石英等からなる支持部材3に支持されている。載置台2の上方の外周には、例えばシリコンで形成されたエッジリング5が設けられている。処理容器1内には、載置台2及び支持台4の周囲を囲むように、例えば石英等からなる円筒状の内壁部材3aが設けられている。
載置台2には、複数、例えば3つのピン用貫通孔200が設けられており(図1には1つのみ示す。)、これらのピン用貫通孔200の内部には、夫々リフターピン61が配設されている。リフターピン61は、駆動機構62に接続されており、駆動機構62により上下動される。
次に、図2を参照して、載置台2の構成の一例について説明する。図2は、本実施形態に係る載置台2を示す概略断面図である。上述のとおり、載置台2は、基台2aと、静電チャック6とを有する。静電チャック6は、円板状であり、同じく円板状のウエハWを載置するための載置面21と、当該載置面21に対向する裏面22とを有している。基台2aは、静電チャック6の裏面22に接合されている。載置台2が静電チャック6を有しない場合、基台2aの上面が載置台2の載置面21になり、基台2aの下面が載置台2の裏面22になる。
通孔210aの内部には、埋込部材220が配置されている。埋込部材220には段差部220aが形成されている。埋込部材220の段差部220aよりも上側の径は段差部220aよりも下側の径よりも小さく、埋込部材220の縦断面は凸状になっている。なお、埋込部材220の段差部220aよりも上側を「先端部」ともいい、埋込部材220の段差部220aよりも下側を「基端部」ともいう。
例えば、図4(a)の比較例と図4(b)の本実施形態の埋込部材220を比較して説明する。比較例では、埋込部材220の先端部220bと通孔210aの内壁の間は、径方向に約0.15mmの環状の隙間を有する。また、先端部220bと通孔210aの内壁の間の縦方向の隙間は、静電チャック6の厚さに等しく、約1.2mmである。よって、比較例では、先端部220bにおける電子の直線距離の最長は、約1.2mmとなる。
次に、図6を参照しながら、一実施形態に係る埋込部材220の他の例について説明する。図6(a)に示す例では、埋込部材220の先端部220bは複数の突起を有さず、段差部220aよりも手前、すなわち、段差部220aに対して先端部220bの反対側に位置する基端部220cにスパイラル状の突起313を有する。基端部220cと通孔210aの間は、約0.05mm以下の隙間を有する。
載置台2に設けられた埋込部材220は、以上に説明したウエハWの裏面22に供給する伝熱ガス用の流路である通孔210aに適用する場合に限られない。例えば、図1に示すリフターピン61を挿通させるピン用貫通孔200にも適用できる。この場合、リフターピン61の表面に互い違いに複数の突起を設けたり、スパイラル状の突起を設けてもよい。
2a 基台
5 エッジリング
6 静電チャック
15 ガス供給部
16 シャワーヘッド
21 載置面
22 裏面
31 伝熱ガス供給部
61 リフターピン
100 基板処理装置
200 ピン用貫通孔
203 ガス用スリーブ
210 ガス供給管
220 埋込部材
210a 通孔
220a 段差部
220b 先端部
220c 基端部
300、301、302、310、311、312 突起
313 スパイラル状の突起
400、401、402、410、411、412 隙間
413 スパイラル状の隙間
Claims (8)
- 被処理体が載置される載置面及び前記載置面に対する裏面を有し、前記載置面と前記裏
面を貫通する通孔が形成された板状部材と、
前記通孔の内部に配置された埋込部材と、を有し、
前記埋込部材の表面に凹部又は凸部の少なくともいずれかを設け、
前記埋込部材の表面の凹部又は凸部の少なくともいずれかは、複数の突起であり、
前記複数の突起は、互い違いに2層以上に形成される、載置台。 - 平面視で前記通孔と前記埋込部材とは、所定の距離以下で離隔する、
請求項1に記載の載置台。 - 前記複数の突起は、周方向に1.2mm以下の間隔で配置されている、
請求項1又は2に記載の載置台。 - 被処理体が載置される載置面及び前記載置面に対する裏面を有し、前記載置面と前記裏
面を貫通する通孔が形成された板状部材と、
前記通孔の内部に配置された埋込部材と、を有し、
前記埋込部材の表面に凹部又は凸部の少なくともいずれかを設け、
前記埋込部材の表面の凹部又は凸部の少なくともいずれかは、複数の突起及びスパイラ
ル状の突起であり、
前記埋込部材の先端部に前記複数の突起及び前記スパイラル状の突起の一方を有し、前
記埋込部材の基端部に前記複数の突起及び前記スパイラル状の突起の他方を有する、載置
台。 - 前記埋込部材の表面の凹部又は凸部の少なくともいずれかは、径方向に0.05mm以
下の凹み又は突出である、
請求項1~4のいずれか一項に記載の載置台。 - 前記所定の距離は、0.05mm以下である、
請求項2に記載の載置台。 - 前記通孔は、伝熱ガス用の流路又は被処理体を保持するリフターピンを挿通させる孔で
ある、
請求項1~6のいずれか一項に記載の載置台。 - 内部にて被処理体を処理する処理容器と、
前記処理容器内に配置され、被処理体を載置する載置台と、を有し、
前記載置台は、被処理体が載置される載置面及び前記載置面に対する裏面を有し、前記
載置面と前記裏面を貫通する通孔が形成された板状部材と、前記通孔の内部に配置された
埋込部材と、を有し、
前記埋込部材の表面に凹部又は凸部の少なくともいずれかを設け、
前記埋込部材の表面の凹部又は凸部の少なくともいずれかは、複数の突起であり、
前記複数の突起は、互い違いに2層以上に形成される、基板処理装置。
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