JP5292811B2 - 配線基板の残渣除去用組成物および洗浄方法 - Google Patents
配線基板の残渣除去用組成物および洗浄方法 Download PDFInfo
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- JP5292811B2 JP5292811B2 JP2007551053A JP2007551053A JP5292811B2 JP 5292811 B2 JP5292811 B2 JP 5292811B2 JP 2007551053 A JP2007551053 A JP 2007551053A JP 2007551053 A JP2007551053 A JP 2007551053A JP 5292811 B2 JP5292811 B2 JP 5292811B2
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- 239000010937 tungsten Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
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- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3281—Heterocyclic compounds
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/22—Electronic devices, e.g. PCBs or semiconductors
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- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
- G03F7/422—Stripping or agents therefor using liquids only
- G03F7/423—Stripping or agents therefor using liquids only containing mineral acids or salts thereof, containing mineral oxidizing substances, e.g. peroxy compounds
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- G—PHYSICS
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- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
- G03F7/422—Stripping or agents therefor using liquids only
- G03F7/425—Stripping or agents therefor using liquids only containing mineral alkaline compounds; containing organic basic compounds, e.g. quaternary ammonium compounds; containing heterocyclic basic compounds containing nitrogen
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/07—Treatments involving liquids, e.g. plating, rinsing
- H05K2203/0779—Treatments involving liquids, e.g. plating, rinsing characterised by the specific liquids involved
- H05K2203/0786—Using an aqueous solution, e.g. for cleaning or during drilling of holes
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- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/12—Using specific substances
- H05K2203/122—Organic non-polymeric compounds, e.g. oil, wax or thiol
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- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0017—Etching of the substrate by chemical or physical means
- H05K3/0041—Etching of the substrate by chemical or physical means by plasma etching
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/38—Improvement of the adhesion between the insulating substrate and the metal
- H05K3/388—Improvement of the adhesion between the insulating substrate and the metal by the use of a metallic or inorganic thin film adhesion layer
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Description
しかしながら、上記のウェットプロセスにより方法は、チタンやチタン合金に対する腐食性が大きく、チタンやチタン合金が用いられた配線基板の製造における残渣除去工程に適用することが困難である。
1.酸化剤及びアゾール類化合物を含有し、pHが1〜7であることを特徴とする配線基板の残渣除去用組成物。
2.酸化剤が、過酸化水素、オゾン、過マンガン酸カリウム、過炭酸及びその塩、過燐酸およびその塩、過硫酸及びその塩、ヨウ素酸及びその塩、臭素酸及びその塩、過塩素酸及びその塩、塩素酸及びその塩、次亜塩素酸及びその塩から選ばれる少なくとも1種である上記1の配線基板の残渣除去用組成物。
3.酸化剤が、過酸化水素である上記2の配線基板の残渣除去用組成物。
4.アゾール類化合物が、トリアゾール類化合物及び/又はテトラゾール類化合物である上記1〜3のいずれかの配線基板の残渣除去用組成物。
5.アゾール類化合物が0.0001〜5質量%である上記1〜4のいずれかの配線基板の残渣除去用組成物。
6.過酸化水素が0.01〜20質量%である上記3〜5のいずれかの配線基板の残渣除去用組成物。
7.上記1〜6のいずれかの配線基板の残渣除去用組成物を使用して、ドライエッチング後の配線基板の残渣を除去することを特徴とする配線基板の洗浄方法。
8.配線基板がチタン及び/又はチタン合金を含有するものである上記7の配線基板の洗浄方法。
本発明の配線基板の残渣除去用組成物(単に残渣除去用組成物とも云う)に用いられる酸化剤としては、過酸化水素、オゾン、過マンガン酸カリウム、過炭酸及びその塩、過燐酸およびその塩、過硫酸及びその塩、ヨウ素酸及びその塩、臭素酸及びその塩、過塩素酸及びその塩、塩素酸及びその塩、次亜塩素酸及びその塩などが挙げられ、単独または混同して使用できるが、特に好ましくは過酸化水素である。
酸化剤として過酸化水素を使用する場合、洗浄液中における過酸化水素の濃度は0.01質量%〜20質量%であることが好ましく、0.05質量%〜5質量%であることがさらに好ましく、0.1質量%〜3質量%であることが特に好ましい。過酸化水素の濃度を0.01質量%以上とすることにより残渣除去性が向上し、20質量%以下とすることによりチタンの溶解性が大きくなることが回避される。
ピロール類としてはピロール、2H-ピロール、1-メチルピロール、2-エチルピロール、2,4-ジメチルピロール、2,5-ジメチルピロール、1,2,5-トリメチルピロール等が挙げられる。ピリジン類としてはピリジン、2-ピコリン、3-ピコリン、4-ピコリン、2-エチルピリジン、3-エチルピリジン、4-エチルピリジン、2,3-ルチジン、2,4-ルチジン、3,5-ルチジン、4-t-ブチルピリジン、2-アミノピリジン、3-アミノピリジン、4-アミノピリジン等が挙げられる。キノリン類としてはキノリン、イソキノリン、キナルジン、3-メチルキノリン、2-ヒドロキシキノリン、3-ヒドロキシキノリン、5-ヒドロキシキノリン、3-アミノキノリン、5-アミノキノリン、8-アミノキノリン、5-ニトロキノリン、6-ニトロキノリン、8-ニトロキノリン、8-メチル-5-ニトロキノリン、8-ヒドロキシ-5-ニトロキノリン等が挙げられる。モルホリン類としてはモルホリン、1-メチルモルホリン、1-エチルモルホリン、ヒドロキシエチルモルホリン、ヒドロキシプロピルモルホリン、アミノエチルモルホリン、アミノプロピルモルホリン等が挙げられる。
本発明の残渣除去用組成物で配線基板を処理する前後に、他のレジスト剥離用組成物で配線基板を処理することはなんら問題がない。この際のレジスト剥離用組成物としては公知のものを使用することができるが、特に有機アルカリ系の組成物が好適である。
なお、以下の実施例及び比較例において、残渣除去用組成物の測定評価方法は以下に通りである。
銅およびチタンによる配線層と炭素ドープド酸化ケイ素による絶縁層が積層されたシリコンウェハ基板にレジストパターンを形成し、該レジストパターンをマスクとしてドライエッチングにより銅、チタン、炭素ドープド酸化ケイ素からなるパターンを形成し、試片Aを得た。試片Aの断面の模式図を図1に示す。
残渣除去組成物を40℃に加温し、厚さ1000Åのチタン膜を表面に作製したシリコンウェハを所定時間浸漬した後、超純水リンスを行い、蛍光X線装置にて処理前後のチタン膜厚差を測定した。ウェハの浸漬時間はチタン膜が消失しない程度に調節した。得られた膜厚差から1分当たりのチタン溶解速度 (Ti E/R)を計算した。
試片Aを40℃にて残渣除去用組成物に3分間浸漬処理した後、超純水リンスを行い、窒素ガスによりブロー乾燥し、走査型電子顕微鏡(SEM)観察により配線層の腐食の有無及び残渣の有無を確認した。
配線層腐食性および残渣除去性の評価は以下のように行った。
(配線層腐食性)
○:配線層の腐食が全く観察されない
△:配線層の腐食が一部に観察される
×:配線層の腐食が全体に観察される
(残渣除去性)
○:残渣の残存が全く観察されない
△:残渣の残存が一部に観察される
×:残渣の残存が全体に観察される。
表1に示す残渣除去用組成物を作製し、試片Aのチタン溶解速度の測定と、配線層腐食性、残渣除去性の評価を行った。
なお、表1および表2における表中のDTPPはジエチレントリアミンペンタ(メチレンホスホン酸)を示す。また、表中の組成に示された濃度(%)は全て質量%であり、100質量%に達しない残分は全て水である。
これら実施例においては、配線層の腐食を生じずに残渣を除去でき、チタンの溶解も抑制できた。
表2に示す組成の残渣除去用組成物を作製し、試片Aの配線腐食性、残渣除去性を評価し、またチタン溶解速度(Ti E/R)を測定した。
Claims (6)
- 過酸化水素、アゾール類化合物、および過酸化水素の安定剤を含有し、pHが1〜7であることを特徴とする配線基板の残渣除去用組成物。
ただし、前記過酸化水素の安定剤が、アミノトリ(メチレンホスホン酸)、1−ヒドロキシエチリデン‐1,1−ジホスホン酸、エチレンジアミンテトラ(メチレンホスホン酸)、ジエチレントリアミンペンタ(メチレンホスホン酸)、およびエチレンジアミンから選択される1種以上であり、過酸化水素の安定剤の濃度が0.0001質量%〜0.1質量%である。 - 過酸化水素の濃度が0.01〜20質量%である請求項1に記載の配線基板の残渣除去用組成物。
- アゾール類化合物が、トリアゾール類化合物及び/又はテトラゾール類化合物である請求項1に記載の配線基板の残渣除去用組成物。
- アゾール類化合物が0.0001〜5質量%である請求項1に記載の配線基板の残渣除去用組成物。
- 請求項1〜4のいずれかに記載の配線基板の残渣除去用組成物を使用して、ドライエッチング後の配線基板の残渣を除去することを特徴とする配線基板の洗浄方法。
- 配線基板がチタン及び/又はチタン合金を含有するものである請求項5に記載の配線基板の洗浄方法。
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CN111484908A (zh) * | 2019-01-29 | 2020-08-04 | 山东浪潮华光光电子股份有限公司 | 一种光刻版清洗剂及其使用方法 |
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JP2005181910A (ja) * | 2003-12-24 | 2005-07-07 | Kao Corp | レジスト用剥離剤組成物 |
JP2005292288A (ja) * | 2004-03-31 | 2005-10-20 | Dongwoo Fine-Chem Co Ltd | レジスト剥離剤組成物 |
JP2005333104A (ja) * | 2004-05-19 | 2005-12-02 | Samsung Electronics Co Ltd | 半導体基板用洗浄液組成物、半導体基板の洗浄方法、及び半導体装置の製造方法 |
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CN101331811A (zh) | 2008-12-24 |
KR20080091096A (ko) | 2008-10-09 |
TW200732864A (en) | 2007-09-01 |
US20100051066A1 (en) | 2010-03-04 |
TWI411893B (zh) | 2013-10-11 |
IL192278A0 (en) | 2008-12-29 |
EP1965618B1 (en) | 2012-11-14 |
CN101331811B (zh) | 2010-09-08 |
JPWO2007072727A1 (ja) | 2009-05-28 |
IL192278A (en) | 2013-11-28 |
KR101349491B1 (ko) | 2014-01-08 |
EP1965618A4 (en) | 2010-08-04 |
EP1965618A1 (en) | 2008-09-03 |
WO2007072727A1 (ja) | 2007-06-28 |
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