JP7449768B2 - セラミックス基板及びその製造方法、静電チャック、基板固定装置、半導体装置用パッケージ - Google Patents
セラミックス基板及びその製造方法、静電チャック、基板固定装置、半導体装置用パッケージ Download PDFInfo
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- JP7449768B2 JP7449768B2 JP2020076847A JP2020076847A JP7449768B2 JP 7449768 B2 JP7449768 B2 JP 7449768B2 JP 2020076847 A JP2020076847 A JP 2020076847A JP 2020076847 A JP2020076847 A JP 2020076847A JP 7449768 B2 JP7449768 B2 JP 7449768B2
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- base
- aluminum oxide
- substrate
- silicon dioxide
- ceramic
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- 239000000758 substrate Substances 0.000 title claims description 99
- 239000000919 ceramic Substances 0.000 title claims description 98
- 239000004065 semiconductor Substances 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 92
- 229940024548 aluminum oxide Drugs 0.000 claims description 55
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 51
- 239000000377 silicon dioxide Substances 0.000 claims description 46
- 239000004020 conductor Substances 0.000 claims description 39
- 235000012239 silicon dioxide Nutrition 0.000 claims description 38
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 36
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 35
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 33
- 229910052750 molybdenum Inorganic materials 0.000 claims description 31
- 239000011733 molybdenum Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 18
- 238000005245 sintering Methods 0.000 claims description 16
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 16
- 229910052721 tungsten Inorganic materials 0.000 claims description 16
- 239000010937 tungsten Substances 0.000 claims description 16
- 238000010304 firing Methods 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 7
- 229910052863 mullite Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 239000011368 organic material Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims 1
- 239000001569 carbon dioxide Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 19
- 239000010410 layer Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 12
- 239000000843 powder Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- 229910010293 ceramic material Inorganic materials 0.000 description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 6
- 238000010344 co-firing Methods 0.000 description 6
- 239000002826 coolant Substances 0.000 description 6
- 238000007650 screen-printing Methods 0.000 description 6
- 235000012431 wafers Nutrition 0.000 description 6
- 230000002542 deteriorative effect Effects 0.000 description 5
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- 238000004458 analytical method Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000004453 electron probe microanalysis Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- 229910052851 sillimanite Inorganic materials 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- PCEXQRKSUSSDFT-UHFFFAOYSA-N [Mn].[Mo] Chemical compound [Mn].[Mo] PCEXQRKSUSSDFT-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000013464 silicone adhesive Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 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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Description
[基板固定装置の構造]
図1は、第1実施形態に係る基板固定装置を簡略化して例示する断面図である。図1を参照すると、基板固定装置1は、主要な構成要素として、ベースプレート10と、静電チャック20とを有している。基板固定装置1は、静電チャック20により吸着対象物である基板W(例えば、半導体ウェハ等)を吸着保持する装置である。
次に、静電チャック20の製造方法について説明する。図3及び図4は、第1実施形態に係る静電チャックの製造工程について例示する斜視図である。
まず、図5(a)に示すように、セラミックス材料が酸化アルミニウムからなり、焼結助剤を含まない、グリーンシート300を2枚準備した。そして、各々のグリーンシート300の所定位置に貫通孔301を形成し、印刷法(スクリーン印刷)により、モリブデン粉末量に対してアルミナ粉末を11.0wt%添加した導電性ペーストを貫通孔301に充填し、ビア302を形成した。次に、各々のグリーンシート300の両面に、印刷法(スクリーン印刷)により導電性ペーストを塗布し、ビア302と電気的に接続するパッド303及び304を形成した。
セラミックス材料が酸化アルミニウムからなり、焼結助剤を含まない、グリーンシートを準備した。そして、このグリーンシートの表面に、モリブデン粉末量に対して酸化ニッケル粉末を0.5wt%、アルミナ粉末を2.0wt%、シリカ粉末を2.0wt%添加した導電性ペーストを用いてパッドを形成した。そして、大気圧下で同時に焼成後、研磨でパッドを除去してセラミックスを露出させ、実施例2に係るサンプル300Cを作製した。
第2実施形態では、第1実施形態で説明したセラミックス基板を有する半導体装置用パッケージの例を示す。図10は、第2実施形態に係る半導体装置用パッケージを例示する断面図である。図11は、第2実施形態に係る半導体装置用パッケージを例示する平面図である。
10 ベースプレート
11 取付孔
12 リフトピン用開口部
20 静電チャック
21 基体
22 静電電極
22a 第1静電電極
22b 第2静電電極
23a、23b ビア
24 発熱体
25 セラミックス部
40a、40b 電源
51、52、53 グリーンシート
54、56 ビア導体
55、57 導電体パターン
71a、71b 構造体
72a セラミックス基板
100 半導体装置用パッケージ
110 セラミックス基板
111~114 セラミックス基材
121~124 配線パターン
132~134 ビア
Claims (13)
- 基体と、
前記基体に内蔵された導電体パターンと、
前記基体に内蔵されて前記導電体パターンと電気的に接続されたビアと、を有し、
前記基体は、酸化アルミニウムからなるセラミックスであり、
前記ビアは、モリブデンを主成分とし、酸化ニッケル、酸化アルミニウム、及び二酸化ケイ素を含む焼成体であり、
前記モリブデンの成分及び前記酸化ニッケルの成分は前記基体内には存在せずに前記ビア内のみに存在し、前記酸化アルミニウムの成分及び前記二酸化ケイ素の成分は前記基体内と前記ビア内の両方に存在し、
前記基体内において、前記二酸化ケイ素の成分は前記基体と前記ビアとの境界から20μmの範囲内のみに存在し、
前記基体と前記ビアとの境界から20μmの範囲内に、アルミニウムと二酸化ケイ素の複合酸化物層が形成されているセラミックス基板。 - 前記ビアは、前記モリブデンに対して酸化ニッケルの添加量が0.2~1.0wt%である導電性ペーストの焼成体である請求項1に記載のセラミックス基板。
- 前記ビアは、前記モリブデンに対して酸化アルミニウムの添加量が2.0~20.0wt%、二酸化ケイ素の添加量が0.2~3.0wt%である導電性ペーストの焼成体である請求項1又は2に記載のセラミックス基板。
- 前記ビアに含まれるモリブデンの平均粒径が0.5μm~3.0μm、酸化ニッケルの平均粒径が5.0μm~15.0μm、酸化アルミニウムの平均粒径が0.1μm~4.0μm、二酸化ケイ素の平均粒径が0.1μm~12.0μmである請求項1乃至3の何れか一項記載のセラミックス基板。
- 前記複合酸化物層は、ムライト層、シリマイト層、又はムライト層とシリマイト層とが混在した層である請求項1乃至4の何れか一項記載のセラミックス基板。
- 前記基体は、前記酸化アルミニウムの純度が99.5%以上である請求項1乃至5の何れか一項記載のセラミックス基板。
- 前記基体は、酸化アルミニウムに対する相対密度が97%以上であること請求項1乃至6の何れか一項記載のセラミックス基板。
- 前記基体は、酸化アルミニウムの平均粒径が1.0μm~3.0μmである請求項1乃至7の何れか一項記載のセラミックス基板。
- 前記導電体パターンは、タングステンを主成分とし、酸化ニッケル、酸化アルミニウム、二酸化ケイ素を含む焼成体である請求項1乃至8の何れか一項記載のセラミックス基板。
- 請求項1乃至9の何れか一項に記載のセラミックス基板を有する半導体装置用パッケージ。
- 請求項1乃至9の何れか一項に記載のセラミックス基板において、前記導電体パターンが静電電極である静電チャック。
- ベースプレートと、
前記ベースプレートの一方の面に搭載された請求項11に記載の静電チャックと、を有する基板固定装置。 - 基体と、前記基体に内蔵された導電体パターンと、前記基体に内蔵されて前記導電体パターンと電気的に接続されたビアと、を有するセラミックス基板の製造方法であって、
焼結助剤を含まない酸化アルミニウムと、有機材料の混合物からなるグリーンシートの所定面に、所定パターンの第1導電性ペーストを形成する工程と、
前記グリーンシートに形成した貫通孔に、モリブデンを主成分とし、酸化ニッケル、酸化アルミニウム、二酸化ケイ素を添加した第2導電性ペーストを充填する工程と、
前記グリーンシート、前記第1導電性ペースト、及び前記第2導電性ペーストを焼成して、前記基体、前記導電体パターン、及び前記ビアを形成する工程と、を有し、
前記モリブデンの成分及び前記酸化ニッケルの成分は前記基体内には存在せずに前記ビア内のみに存在し、前記酸化アルミニウムの成分及び前記二酸化ケイ素の成分は前記基体内と前記ビア内の両方に存在し、
前記基体内において、前記二酸化ケイ素の成分は前記基体と前記ビアとの境界から20μmの範囲内のみに存在し、
前記基体と前記ビアとの境界から20μmの範囲内に、アルミニウムと二酸化ケイ素の複合酸化物層が形成されるセラミックス基板の製造方法。
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