JPWO2016021594A1 - 芳香族メチロール化合物が反応したノボラック樹脂を含むレジスト下層膜形成組成物 - Google Patents
芳香族メチロール化合物が反応したノボラック樹脂を含むレジスト下層膜形成組成物 Download PDFInfo
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- JPWO2016021594A1 JPWO2016021594A1 JP2016540245A JP2016540245A JPWO2016021594A1 JP WO2016021594 A1 JPWO2016021594 A1 JP WO2016021594A1 JP 2016540245 A JP2016540245 A JP 2016540245A JP 2016540245 A JP2016540245 A JP 2016540245A JP WO2016021594 A1 JPWO2016021594 A1 JP WO2016021594A1
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Abstract
Description
ポリメチロールカルバゾールを用いたレジスト下層膜形成組成物が開示されている(特許文献1、特許文献2、及び特許文献3参照)。
フルオレンフェノールノボラック樹脂を用いたレジスト下層膜形成組成物が開示されている(特許文献4参照)。
フルオレンナフトールノボラック樹脂を用いたレジスト下層膜形成組成物が開示されている(特許文献5参照)。
フルオレンフェノールとアリールアルキレンを繰り返し単位とする樹脂を含むレジスト下層膜形成組成物が開示されている(特許文献6及び特許文献7参照)。
カルバゾールノボラックを用いたレジスト下層膜形成組成物が開示されている(特許文献8参照)。
多核フェノールノボラックを用いたレジスト下層膜形成組成物が開示されている(特許文献9参照)。
第2観点として、前記芳香族化合物(A)がノボラック樹脂に含まれる構造体(C)を構成するための成分である第1観点に記載のレジスト下層膜形成組成物、
第3観点として、前記ヒドロキシ基含有芳香族メチロール化合物(B)が式(1):
第4観点として、前記ヒドロキシ基含有芳香族メチロール化合物(B)が2−ヒドロキシベンジルアルコール、4−ヒドロキシベンジルアルコール、又は2,6−ジ−tert−ブチル−4−ヒドロキシメチルフェノールである第1観点乃至第3観点のうちいずれか一つに記載のレジスト下層膜形成組成物、
第5観点として、前記構造体(C)が式(2):
第6観点として、前記芳香族化合物(A)が芳香族アミン又はフェノール性ヒドロキシ基含有化合物である第1観点乃至第5観点のうちいずれか一つに記載のレジスト下層膜形成組成物、
第7観点として、前記ノボラック樹脂が、芳香族アミン又はフェノール性ヒドロキシ基含有化合物と、アルデヒド又はケトンとの反応により生成した樹脂である第1観点乃至第6観点のうちいずれか一つに記載のレジスト下層膜形成組成物、
第8観点として、前記芳香族アミンが、フェニルインドール又はフェニルナフチルアミンである第7観点に記載のレジスト下層膜形成組成物、
第9観点として、前記フェノール性ヒドロキシ基含有化合物がフェノール、ジヒドロキシベンゼン、トリヒドロキシベンゼン、ヒドロキシナフタレン、ジヒドロキシナフタレン、トリヒドロキシナフタレン、トリス(4−ヒドロキシフェニル)メタン、トリス(4−ヒドロキシフェニル)エタン、又は1,1,2,2−テトラキス(4−ヒドロキシフェニル)エタンである第7観点に記載のレジスト下層膜形成組成物、
第10観点として、前記アルデヒドが、ナフトアルデヒド又はピレンカルボキシアルデヒドである第7観点乃至第9観点のうちいずれか一つに記載のレジスト下層膜形成組成物、
第11観点として、更に溶剤を含む第1観点乃至第10観点のうちいずれか一つに記載のレジスト下層膜形成組成物、
第12観点として、更に酸及び/又は酸発生剤を含む第1観点乃至第11観点のうちいずれか一つに記載のレジスト下層膜形成組成物、
第13観点として、更に架橋剤を含む第1観点乃至第12観点のうちいずれか一つに記載のレジスト下層膜形成組成物、
第14観点として、第1観点乃至第13観点のうちいずれか一つに記載のレジスト下層膜形成組成物を半導体基板上に塗布し、焼成して下層膜を形成する工程を含む半導体の製造に用いられるレジストパターンの形成方法、
第15観点として、半導体基板上に第1観点乃至第13観点のうちいずれか一つに記載のレジスト下層膜形成組成物により下層膜を形成する工程、その上にレジスト膜を形成する工程、光又は電子線の照射と現像によりレジストパターンを形成する工程、該レジストパターンにより該下層膜をエッチングする工程、及びパターン化された下層膜により半導体基板を加工する工程を含む半導体装置の製造方法、
第16観点として、半導体基板上に第1観点乃至第13観点のうちいずれか一つに記載のレジスト下層膜形成組成物により下層膜を形成する工程、その上にハードマスクを形成する工程、更にその上にレジスト膜を形成する工程、光又は電子線の照射と現像によりレジストパターンを形成する工程、該レジストパターンによりハードマスクをエッチングする工程、パターン化されたハードマスクにより該下層膜をエッチングする工程、及びパターン化された下層膜により半導体基板を加工する工程を含む半導体装置の製造方法、並びに
第17観点として、前記ハードマスクが無機物の蒸着膜からなる第16観点に記載の製造方法、である。
特に、本発明のレジスト下層膜形成組成物は、レジスト溶剤への溶解性が高く、スピンコート性に優れた塗布型組成物である。そして、本発明のレジスト下層膜形成組成物から得られたレジスト下層膜は、被膜して焼成後、それらレジスト溶剤に再溶解することはない。
式(1)中、Ar1は炭素原子数6乃至40のアリール基を示し、R1は炭素原子数1乃至10のアルキル基、炭素原子数2乃至10のアルケニル基、炭素原子数2乃至10のアルキニル基、炭素原子数6乃至40のアリール基、ヒドロキシ基、シアノ基、ニトロ基、アミノ基、カルボキシル基、アセチル基、ハロゲノメチル基、−Y−Z基、ハロゲン原子、またはそれらの組み合わせを示す。Yは酸素原子、硫黄原子、カルボニル基、エステル基を示し、Zは炭素原子数1乃至10のアルキル基を示す。R2は水素原子又はメチル基を示す。R3、R4はそれぞれ水素原子、炭素原子数1乃至10のアルキル基、炭素原子数2乃至10のアルケニル基、シアノ基、又はアルキルアミノ基を示す。mは0乃至(4+2n)の整数であり、nはアリール基Ar1が有するベンゼン環の縮合度を示す。
芳香族アミンとしては炭素原子数6乃至40のアミンが好ましく、例えばアニリン、ナフチルアミン、フェニルナフチルアミン、フェニルインドール、及びカルバゾールが例示される。フェニルナフチルアミン、及びフェニルインドールは好適に用いることができる。
フェノール性ヒドロキシ基含有化合物としては炭素原子数6乃至40のものが挙げられ、例えばフェノール、ジヒドロキシベンゼン、トリヒドロキシベンゼン、ヒドロキシナフタレン、ジヒドロキシナフタレン、又はトリヒドロキシナフタレン、トリス(4−ヒドロキシフェニル)メタン、トリス(4−ヒドロキシフェニル)エタン、1,1,2,2−テトラキス(4−ヒドロキシフェニル)エタンが例示される。
式(2)中、Ar1、R1、R2、mは式(1)と同じであり、A1は芳香族化合物(A)の芳香族環又はノボラック樹脂の芳香族環である。
即ち、Ar1は炭素原子数6乃至40のアリール基を示し、R1は炭素原子数1乃至10のアルキル基、炭素原子数2乃至10のアルケニル基、炭素原子数2乃至10のアルキニル基、炭素原子数6乃至40のアリール基、ヒドロキシ基、シアノ基、ニトロ基、アミノ基、カルボキシル基、アセチル基、ハロゲノメチル基、−Y−Z基、ハロゲン原子、またはそれらの組み合わせを示す。Yは酸素原子、硫黄原子、カルボニル基、エステル基を示し、Zは炭素原子数1乃至10のアルキル基を示す。R2は水素原子又はメチル基を示す。R3、R4はそれぞれ水素原子、炭素原子数1乃至10のアルキル基、炭素原子数2乃至10のアルケニル基、シアノ基、又はアルキルアミノ基を示す。mは0乃至(4+2n)の整数であり、nはアリール基Ar1が有するベンゼン環の縮合度を示す。
芳香族アミンはフェニルインドール、フェニルナフチルアミン等が挙げられる。
フェノール性ヒドロキシ基含有化合物はフェノール、ジヒドロキシベンゼン、トリヒドロキシベンゼン、ヒドロキシナフタレン、ジヒドロキシナフタレン、トリヒドロキシナフタレン、トリス(4−ヒドロキシフェニル)メタン、トリス(4−ヒドロキシフェニル)エタン、1,1,2,2−テトラキス(4−ヒドロキシフェニル)エタン等が挙げられる。
アルデヒドもしくはケトン類としては炭素原子数6乃至40のものが挙げられ、例えばベンズアルデヒド、ナフトアルデヒド、フェニルベンズアルデヒド、及びピレンカルボキシアルデヒドが例示され、好ましくはナフトアルデヒド、ピレンカルボキシアルデヒドが挙げられる。
上記の縮合反応と付加反応は無溶剤でも行われるが、通常溶剤を用いて行われる。溶剤としては反応を阻害しないものであれば全て使用することができる。例えば1,2−ジメトキシエタン、ジエチレングリコールジメチルエーテル、プロピレングリコールモノメチルエーテル、テトラヒドロフラン、ジオキサン等のエーテル類が挙げられる。また、使用する酸触媒が例えば蟻酸のような液状のものであるならば溶剤としての役割を兼ねさせることもできる。
縮合時の反応温度は通常40℃乃至200℃である。反応時間は反応温度によって種々選択されるが、通常30分乃至50時間程度である。
以上のようにして得られる重合体の重量平均分子量Mwは、通常500乃至1000000、又は600乃至200000である。
架橋剤の添加量は、使用する塗布溶剤、使用する下地基板、要求される溶液粘度、要求される膜形状などにより変動するが、全固形分に対して0.001乃至80質量%、好ましくは 0.01乃至50質量%、さらに好ましくは0.05乃至40質量%である。これら架橋剤は自己縮合による架橋反応を起こすこともあるが、本発明の上記のポリマー中に架橋性置換基が存在する場合は、それらの架橋性置換基と架橋反応を起こすことができる。
さらに、プロピレングリコールモノブチルエーテル、プロピレングリコールモノブチルエーテルアセテート等の高沸点溶剤を混合して使用することができる。これらの溶剤の中でプロピレングリコールモノメチルエーテル、プロピレングリコールモノメチルエーテルアセテート、乳酸エチル、乳酸ブチル、及びシクロヘキサノン等がレベリング性の向上に対して好ましい。特にプロピレングリコールモノメチルエーテル、プロピレングリコールモノメチルエーテルアセテートが好ましい。
また電子線レジストの電子線照射は、例えば電子線照射装置を用い照射することができる。
2−フェニルインドール8.00g、1−ピレンカルボキシアルデヒド5.72g、2−ヒドロキシベンジルアルコール2.06g、メタンスルホン酸0.36gにプロピレングリコールモノメチルエーテル29.96gを加え、窒素雰囲気下、130℃で24時間撹拌した。反応液をメタノール中に滴下し、析出した樹脂を濾過、洗浄した後、70℃で減圧乾燥することで、式(3−1)を含む樹脂6.15gを得た。尚、GPCより標準ポリスチレン換算で測定されるこの樹脂の重量平均分子量は1370であった。
次に、この得られた樹脂1.00g、界面活性剤(DIC(株)製、品名:メガファック〔商品名〕R−40、フッ素系界面活性剤)0.002gにプロピレングリコールモノメチルエーテル5.70g、プロピレングリコールモノメチルエーテルアセテート13.30gに溶解させ、レジスト下層膜形成組成物を調製した。
2−フェニルインドール8.00g、1−ピレンカルボキシアルデヒド5.72g、4−ヒドロキシベンジルアルコール2.06g、メタンスルホン酸0.36gにプロピレングリコールモノメチルエーテル29.96gを加え、窒素雰囲気下、130℃で24時間撹拌した。反応液をメタノール中に滴下し、析出した樹脂を濾過、洗浄した後、70℃で減圧乾燥することで、式(3−2)を含む樹脂5.52gを得た。尚、GPCより標準ポリスチレン換算で測定されるこの樹脂の重量平均分子量は1100であった。
次に、この得られた樹脂1.00g、界面活性剤(DIC(株)製、品名:メガファック〔商品名〕R−40、フッ素系界面活性剤)0.002gにプロピレングリコールモノメチルエーテル5.70g、プロピレングリコールモノメチルエーテルアセテート13.30gに溶解させ、レジスト下層膜形成組成物を調製した。
2−フェニルインドール7.50g、1−ピレンカルボキシアルデヒド5.36g、2,6−ジ−tert−ブチル−4−ヒドロキシメチルフェノール3.70g、メタンスルホン酸0.34gにプロピレングリコールモノメチルエーテル31.32gを加え、窒素雰囲気下、130℃で24時間撹拌した。反応液をメタノール中に滴下し、析出した樹脂を濾過、洗浄した後、70℃で減圧乾燥することで、式(3−3)を含む樹脂6.45gを得た。尚、GPCより標準ポリスチレン換算で測定されるこの樹脂の重量平均分子量は1510であった。
次に、この得られた樹脂1.00g、界面活性剤(DIC(株)製、品名:メガファック〔商品名〕R−40、フッ素系界面活性剤)0.002gにプロピレングリコールモノメチルエーテル5.70g、プロピレングリコールモノメチルエーテルアセテート13.30gに溶解させ、レジスト下層膜形成組成物を調製した。
フェニル−1−ナフチルアミン10.00g、1−ピレンカルボキシアルデヒド10.50g、2、6−ジ−tert−ブチル−4−ヒドロキシメチルフェノール5.39g、メタンスルホン酸0.99gに1,4−ジオキサン40.00gを加え、窒素雰囲気下、還流状態で24時間撹拌した。反応液をメタノール中に滴下し、析出した樹脂を濾過、洗浄した後、70℃で減圧乾燥することで、式(3−6)を含む樹脂15.58gを得た。尚、GPCより標準ポリスチレン換算で測定されるこの樹脂の重量平均分子量は2600であった。
次に、この得られた樹脂1.00g、界面活性剤(DIC(株)製、品名:メガファック〔商品名〕R−40、フッ素系界面活性剤)0.002gにシクロヘキサノン13.30g、プロピレングリコールモノメチルエーテルアセテート5.70gに溶解させ、レジスト下層膜形成組成物を調製した。
2−フェニルインドール8.39g、1−ピレンカルボキシアルデヒド10.00g、メタンスルホン酸0.42gにプロピレングリコールモノメチルエーテル5.64g、プロピレングリコールモノメチルエーテルアセテート22.57gを加え、窒素雰囲気下、130℃で24時間撹拌した。反応液をメタノール中に滴下し、析出した樹脂を濾過、洗浄した後、70℃で減圧乾燥することで、下記式(5−1)を含む樹脂15.10gを得た。尚、GPCより標準ポリスチレン換算で測定されるこの樹脂の重量平均分子量は1200であった。
次に、この得られた樹脂1.00g、界面活性剤(DIC(株)製、品名:メガファック〔商品名〕R−40、フッ素系界面活性剤)0.002gにプロピレングリコールモノメチルエーテル5.70g、シクロヘキサノン13.30gに溶解させ、レジスト下層膜形成組成物を調製した。
フェニル−1−ナフチルアミン11.00g、1−ピレンカルボキシアルデヒド11.55g、メタンスルホン酸0.48gに1,4−ジオキサン17.27g、トルエン17.27gを加え、窒素雰囲気下、還流状態で16時間撹拌した。反応液をメタノール中に滴下し、析出した樹脂を濾過、洗浄した後、70℃で減圧乾燥することで、下記式(5−2)を含む樹脂19.88gを得た。尚、GPCより標準ポリスチレン換算で測定されるこの樹脂の重量平均分子量は900であった。
次に、この得られた樹脂1.00g、界面活性剤(DIC(株)製、品名:メガファック〔商品名〕R−40、フッ素系界面活性剤)0.002gにプロピレングリコールモノメチルエーテル5.70g、シクロヘキサノン13.30gに溶解させ、レジスト下層膜形成組成物を調製した。
2−フェニルインドール10.00g、1−ピレンカルボキシアルデヒド7.15g、ベンジルアルコール2.24g、メタンスルホン酸0.45gにプロピレングリコールモノメチルエーテル36.84gを加え、窒素雰囲気下、130℃で22時間撹拌した。反応液をメタノール中に滴下し、析出した樹脂を濾過、洗浄した後、70℃で減圧乾燥することで、下記式(5−3)を含む樹脂9.70gを得た。尚、GPCより標準ポリスチレン換算で測定されるこの樹脂の重量平均分子量は1270であった。
次に、この得られた樹脂1.00g、界面活性剤(DIC(株)製、品名:メガファック〔商品名〕R−40、フッ素系界面活性剤)0.002gにプロピレングリコールモノメチルエーテル5.70g、シクロヘキサノン13.30gに溶解させ、レジスト下層膜形成組成物を調製した。
2−フェニルインドール10.00g、1−ピレンカルボキシアルデヒド7.15g、サリチルアルデヒド2.52g、メタンスルホン酸0.45gにプロピレングリコールモノメチルエーテル37.37gを加え、窒素雰囲気下、130℃で22時間撹拌した。反応液をメタノール中に滴下し、析出した樹脂を濾過、洗浄した後、70℃で減圧乾燥することで、下記式(5−4)を含む樹脂9.84gを得た。尚、GPCより標準ポリスチレン換算で測定されるこの樹脂の重量平均分子量は1360であった。
次に、この得られた樹脂1.00g、界面活性剤(DIC(株)製、品名:メガファック〔商品名〕R−40、フッ素系界面活性剤)0.002gにプロピレングリコールモノメチルエーテル5.70g、シクロヘキサノン13.30gに溶解させ、レジスト下層膜形成組成物を調製した。
m−クレゾール60.00g、37%ホルマリン水溶液27.00g、p−トルエンスルホン酸・1水和物1.60gにプロピレングリコールモノメチルエーテル150gを加え、窒素雰囲気下、還流状態で24時間撹拌した。反応液をメタノール中に滴下し、析出した樹脂を濾過、洗浄した後、70℃で減圧乾燥した。次に、この得られた樹脂12.02gに9−アントラセンメタノール4.13g、THF28.80g、p−トルエンスルホン酸・1水和物0.52gを加え、窒素雰囲気下、還流状態で24時間撹拌した。反応液をメタノール中に滴下し、析出した樹脂を濾過、洗浄した後、70℃で減圧乾燥し、下記式(5−5)を含む樹脂2.75gを得た。尚、GPCより標準ポリスチレン換算で測定されるこの樹脂の重量平均分子量は1470であった。
次に、この得られた樹脂1.00g、界面活性剤(DIC(株)製、品名:メガファック〔商品名〕R−40、フッ素系界面活性剤)0.002gにプロピレングリコールモノメチルエーテル5.70g、プロピレングリコールモノメチルエーテルアセテート13.30gに溶解させ、レジスト下層膜形成組成物を調製した。
実施例1乃至実施例4、比較例1乃至比較例3で得られた樹脂を代表的なレジスト溶剤であるプロピレングリコールモノメチルエーテル(PGME)の30質量%溶液を調製した。この際、樹脂が溶解して均一溶液が得られた場合を溶解性「良好」とし、十分に溶解せず懸濁液として得られた場合を溶解性「不良」とした。この樹脂の溶解性試験の結果を表1に表す。
ドライエッチング速度の測定に用いたエッチャ−及びエッチングガスは以下のものを用いた。
ES401(日本サイエンティフィック製):CF4
実施例1〜4及び比較例4、5で調製したレジスト下層膜形成組成物の溶液を、それぞれスピンコーターを用いてシリコンウェハー上に塗布した。ホットプレート上で400℃2分間焼成し、レジスト下層膜(膜厚0.25μm)を形成した。エッチングガスとしてCF4ガスを使用してドライエッチング速度を測定した。
また、同様にフェノ−ルノボラック樹脂(市販品、GPCによるポリスチレン換算で測定される重量平均分子量Mwは2000、多分散度Mw/Mnは2.5)溶液を、スピンコーターを用いてシリコンウェハー上に塗布し、205℃1分間焼成して塗膜を形成した。エッチングガスとしてCF4ガスを使用してドライエッチング速度を測定した。205℃1分間焼成して得られたフェノールノボラック樹脂膜(膜厚0.25μm)のエッチング速度を1.00とした時の実施例1〜4及び比較例4、5のレジスト下層膜のドライエッチング速度と、フェノールノボラック樹脂のドライエッチング速度の比較を行った。結果を表2に示した。速度比は(レジスト下層膜)/(フェノ−ルノボラック樹脂膜)のドライエッチング速度比である。
また、芳香族化合物(A)がヒドロキシ基を含有するアルデヒドを用いてノボラック樹脂を製造した場合(比較例4)は、ノボラックポリマー主鎖から伸びる側鎖にヒドロキシ基が存在した構造となり、ドライエッチング速度が高くなりハードマスクとしての性能が低下する。
Claims (17)
- 芳香族化合物(A)の芳香族環とヒドロキシ基含有芳香族メチロール化合物(B)との反応により得られる構造体(C)を含むノボラック樹脂を含むレジスト下層膜形成組成物。
- 前記芳香族化合物(A)がノボラック樹脂に含まれる構造体(C)を構成するための成分である請求項1に記載のレジスト下層膜形成組成物。
- 前記ヒドロキシ基含有芳香族メチロール化合物(B)が式(1):
- 前記ヒドロキシ基含有芳香族メチロール化合物(B)が2−ヒドロキシベンジルアルコール、4−ヒドロキシベンジルアルコール、又は2,6−ジ−tert−ブチル−4−ヒドロキシメチルフェノールである請求項1乃至請求項3のうちいずれか1項に記載のレジスト下層膜形成組成物。
- 前記芳香族化合物(A)が芳香族アミン又はフェノール性ヒドロキシ基含有化合物である請求項1乃至請求項5のうちいずれか1項に記載のレジスト下層膜形成組成物。
- 前記ノボラック樹脂が、芳香族アミン又はフェノール性ヒドロキシ基含有化合物と、アルデヒド又はケトンとの反応により生成した樹脂である請求項1乃至請求項6のうちいずれか1項に記載のレジスト下層膜形成組成物。
- 前記芳香族アミンが、フェニルインドール又はフェニルナフチルアミンである請求項7に記載のレジスト下層膜形成組成物。
- 前記フェノール性ヒドロキシ基含有化合物がフェノール、ジヒドロキシベンゼン、トリヒドロキシベンゼン、ヒドロキシナフタレン、ジヒドロキシナフタレン、トリヒドロキシナフタレン、トリス(4−ヒドロキシフェニル)メタン、トリス(4−ヒドロキシフェニル)エタン、又は1,1,2,2−テトラキス(4−ヒドロキシフェニル)エタンである請求項7に記載のレジスト下層膜形成組成物。
- 前記アルデヒドが、ナフトアルデヒド又はピレンカルボキシアルデヒドである請求項7乃至請求項9のうちいずれか1項に記載のレジスト下層膜形成組成物。
- 更に溶剤を含む請求項1乃至請求項10のうちいずれか1項に記載のレジスト下層膜形成組成物。
- 更に酸及び/又は酸発生剤を含む請求項1乃至請求項11のうちいずれか1項に記載のレジスト下層膜形成組成物。
- 更に架橋剤を含む請求項1乃至請求項12のうちいずれか1項に記載のレジスト下層膜形成組成物。
- 請求項1乃至請求項13のうちいずれか1項に記載のレジスト下層膜形成組成物を半導体基板上に塗布し、焼成して下層膜を形成する工程を含む半導体の製造に用いられるレジストパターンの形成方法。
- 半導体基板上に請求項1乃至請求項13のうちいずれか1項に記載のレジスト下層膜形成組成物により下層膜を形成する工程、その上にレジスト膜を形成する工程、光又は電子線の照射と現像によりレジストパターンを形成する工程、該レジストパターンにより該下層膜をエッチングする工程、及びパターン化された下層膜により半導体基板を加工する工程を含む半導体装置の製造方法。
- 半導体基板上に請求項1乃至請求項13のうちいずれか1項に記載のレジスト下層膜形成組成物により下層膜を形成する工程、その上にハードマスクを形成する工程、更にその上にレジスト膜を形成する工程、光又は電子線の照射と現像によりレジストパターンを形成する工程、該レジストパターンによりハードマスクをエッチングする工程、パターン化されたハードマスクにより該下層膜をエッチングする工程、及びパターン化された下層膜により半導体基板を加工する工程を含む半導体装置の製造方法。
- 前記ハードマスクが無機物の蒸着膜からなる請求項16に記載の製造方法。
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2015
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JP2005156816A (ja) * | 2003-11-25 | 2005-06-16 | Tokyo Ohka Kogyo Co Ltd | 下地材及び多層レジストパターン形成方法 |
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JP2017151389A (ja) * | 2016-02-26 | 2017-08-31 | Hoya株式会社 | マスクブランク、レジスト膜付きマスクブランク、レジストパターン付きマスクブランク、およびそれらの製造方法、ならびに転写用マスクの製造方法 |
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CN106662819B (zh) | 2021-06-25 |
TWI713462B (zh) | 2020-12-21 |
US20170227850A1 (en) | 2017-08-10 |
TW201620981A (zh) | 2016-06-16 |
KR20170042500A (ko) | 2017-04-19 |
US11650505B2 (en) | 2023-05-16 |
CN106662819A (zh) | 2017-05-10 |
WO2016021594A1 (ja) | 2016-02-11 |
JP6703308B2 (ja) | 2020-06-03 |
KR102417838B1 (ko) | 2022-07-06 |
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