JP6867550B2 - 保持装置および保持装置の製造方法 - Google Patents
保持装置および保持装置の製造方法 Download PDFInfo
- Publication number
- JP6867550B2 JP6867550B2 JP2020509543A JP2020509543A JP6867550B2 JP 6867550 B2 JP6867550 B2 JP 6867550B2 JP 2020509543 A JP2020509543 A JP 2020509543A JP 2020509543 A JP2020509543 A JP 2020509543A JP 6867550 B2 JP6867550 B2 JP 6867550B2
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- JP
- Japan
- Prior art keywords
- coat layer
- power receiving
- generating resistor
- receiving electrode
- heat generating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
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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
- H01L21/68757—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 characterised by a coating or a hardness or a material
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- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
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- H01L21/68792—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 characterised by the construction of the shaft
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- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
- H05B1/0233—Industrial applications for semiconductors manufacturing
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- C04B2237/32—Ceramic
- C04B2237/36—Non-oxidic
- C04B2237/366—Aluminium nitride
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/70—Forming laminates or joined articles comprising layers of a specific, unusual thickness
- C04B2237/704—Forming laminates or joined articles comprising layers of a specific, unusual thickness of one or more of the ceramic layers or articles
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/76—Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/50—Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
- C04B2237/86—Joining of two substrates at their largest surfaces, one surface being complete joined and covered, the other surface not, e.g. a small plate joined at it's largest surface on top of a larger plate
Description
A−1.加熱装置100の構成:
図1は、本実施形態における加熱装置100の外観構成を概略的に示す斜視図であり、図2は、本実施形態における加熱装置100のXZ断面構成を概略的に示す説明図であり、図3は、図2のX1部における加熱装置100のXZ断面構成を拡大して示す説明図である。各図には、方向を特定するための互いに直交するXYZ軸が示されている。本明細書では、便宜的に、Z軸正方向を上方向といい、Z軸負方向を下方向というものとするが、加熱装置100は実際にはそのような向きとは異なる向きで設置されてもよい。
次に、受電電極53および発熱抵抗体50の周辺の詳細構成について、図3を参照して説明する。
本実施形態の加熱装置100の製造方法は、例えば以下の通りである。図4は、本実施形態の加熱装置100の製造方法の一例を示すフローチャートである。まず、金属(例えば、タングステンやモリブデン)のメッシュや箔からなる発熱抵抗体50を準備し、発熱抵抗体50の表面の内、受電電極53との接触面を除く表面の少なくとも一部(本実施形態では、受電電極53との接触面を除く表面の大部分)に、AlとTiとZrとVとTaとNbとの少なくとも1つを含有する窒化物である第3のコート層63を形成する(S110)。なお、第3のコート層63は、例えば、発熱抵抗体50の表面における第3のコート層63の非形成領域にマスクをして、溶射、スパッタリング、CVD、PVD等を行うことにより形成する。
以上説明したように、本実施形態の加熱装置100は、保持面S1を有し、窒化アルミニウムを主成分とするセラミックス焼結体により形成された保持部材10と、保持部材10の内部に配置された金属製の発熱抵抗体50と、発熱抵抗体50と接する導電性の受電電極53と、受電電極53と電気的に接続された導電性の端子部材70とを備え、保持部材10の保持面S1上に半導体ウェハWといった対象物を保持する保持装置である。本実施形態の加熱装置100では、受電電極53の表面の内、発熱抵抗体50との接触面と端子部材70との接続面とを除く表面の少なくとも一部が、AlとTiとZrとVとTaとNbとの少なくとも1つを含有する窒化物により形成された第2のコート層62に覆われている。
A−5−1.第1のコート層61の厚さt1の特定方法:
受電電極53の表面に形成された第1のコート層61の厚さt1の特定方法は、以下の通りである。
第2のコート層62がAlNにより形成されている場合(すなわち、第2のコート層62が保持部材10と同一材料により形成されている場合)において、受電電極53がAlNの第2のコート層62により覆われていることは、以下のように特定することができる。
(1)視野を100μm×100μmとし、受電電極53と保持部材10との界面を含むもの
(2)視野を1mm×1mmとし、受電電極53と保持部材10との界面を含むもの
下記の2つの要件を満たす時、受電電極53はAlNの第2のコート層62により覆われているものと判断する。
・要件1:上記(1)における、受電電極53と保持部材10との界面の気孔径と気孔数を観察したとき、10個の視野画像において、0.5μm以上、3μm以下の気孔が平均2個以上存在し、かつ、保持部材10と受電電極53とに含有されない成分の元素拡散がない。
・要件2:上記(2)における粒界相成分の分布を観察したとき、10個の視野画像の内、少なくとも5個以上で受電電極53と保持部材10との界面近傍(界面から距離100μm以内の範囲)に粒界相成分が少ない領域が存在しない。
通常、WやMo等の金属表面酸化物とAlN粒子表面の酸化物は、低温で液相を生成し、緻密化するため、界面に気孔が生じにくい。また、焼結が進行するとAlNの粒界相成分は未焼結部に向かって排出されるため、粒界相成分の濃度差が生じる。一方、表面にAlNにより形成された第2のコート層62が存在する場合、金属表面酸化物と保持部材10のAlN粒子表面の酸化物との反応による、低温での液相生成反応が生じないため、界面気孔が残りやすい。また、界面近傍とそれ以外の箇所で焼結挙動の差が生じにくい為、粒界相成分の濃度差も生じにくい。そのため、上記2つの要件を満たせば、受電電極53はAlNの第2のコート層62により覆われていると判断することができる。
上述した加熱装置100の構成を採用することによって上述した効果が得られる点について、性能評価を行った。以下、該性能評価について説明する。図5および図6は、性能評価結果を示す説明図である。
本明細書で開示される技術は、上述の実施形態に限られるものではなく、その要旨を逸脱しない範囲において種々の形態に変形することができ、例えば次のような変形も可能である。
Claims (5)
- 第1の表面を有し、窒化アルミニウムを主成分とするセラミックス焼結体により形成されたセラミックス部材と、
前記セラミックス部材の内部に配置された金属製の発熱抵抗体と、
前記発熱抵抗体と接する導電性の給電接続部材と、
前記給電接続部材と電気的に接続された導電性の給電端子と、
を備え、前記セラミックス部材の前記第1の表面上に対象物を保持する保持装置において、 前記給電接続部材の表面の内、前記発熱抵抗体との接触面と前記給電端子との接続面とを除く表面の少なくとも一部が、AlとTiとZrとVとTaとNbとの少なくとも1つを含有する窒化物により形成された第2のコート層に覆われている、
ことを特徴とする保持装置。 - 請求項1に記載の保持装置において、
前記給電接続部材の表面の内、前記発熱抵抗体との接触面の少なくとも一部が、TiとZrとVとCrとTaとNbとの少なくとも1つを含有する窒化物により形成された第1のコート層に覆われている、
ことを特徴とする保持装置。 - 請求項2に記載の保持装置において、
前記第1のコート層の厚さは、0.3μm以上、60μm以下である、
ことを特徴とする保持装置。 - 請求項1から請求項3までのいずれか一項に記載の保持装置において、
前記発熱抵抗体の表面の内、前記給電接続部材との接触面を除く表面の少なくとも一部が、AlとTiとZrとVとTaとNbとの少なくとも1つを含有する窒化物により形成された第3のコート層に覆われている、
ことを特徴とする保持装置。 - 第1の表面を有し、窒化アルミニウムを主成分とするセラミックス焼結体により形成されたセラミックス部材と、前記セラミックス部材の内部に配置された金属製の発熱抵抗体と、前記発熱抵抗体と接する導電性の給電接続部材と、前記給電接続部材と電気的に接続された導電性の給電端子と、を備え、前記セラミックス部材の前記第1の表面上に対象物を保持する保持装置の製造方法において、
前記給電接続部材の表面の内、前記発熱抵抗体との接触面と前記給電端子との接続面とを除く表面の少なくとも一部に、AlとTiとZrとVとTaとNbとの少なくとも1つを含有する窒化物であるコート層を形成する工程と、
前記発熱抵抗体と前記コート層が形成された前記給電接続部材とが内部に配置された前記セラミックス部材を焼成により作製する工程と、
を備えることを特徴とする保持装置の製造方法。
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