JP5830631B2 - 搭載装置およびその製造方法 - Google Patents
搭載装置およびその製造方法 Download PDFInfo
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- JP5830631B2 JP5830631B2 JP2015517036A JP2015517036A JP5830631B2 JP 5830631 B2 JP5830631 B2 JP 5830631B2 JP 2015517036 A JP2015517036 A JP 2015517036A JP 2015517036 A JP2015517036 A JP 2015517036A JP 5830631 B2 JP5830631 B2 JP 5830631B2
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- Prior art keywords
- thin film
- alloy thin
- substrate
- film
- wiring
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- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 239000000758 substrate Substances 0.000 claims description 138
- 239000010408 film Substances 0.000 claims description 132
- 239000010409 thin film Substances 0.000 claims description 129
- 239000000956 alloy Substances 0.000 claims description 98
- 229910045601 alloy Inorganic materials 0.000 claims description 98
- 239000010949 copper Substances 0.000 claims description 58
- 229910052802 copper Inorganic materials 0.000 claims description 48
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 44
- 238000005530 etching Methods 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 230000002093 peripheral effect Effects 0.000 claims description 16
- 239000003365 glass fiber Substances 0.000 claims description 15
- 238000004544 sputter deposition Methods 0.000 claims description 15
- 238000007747 plating Methods 0.000 claims description 14
- 150000002500 ions Chemical class 0.000 claims description 13
- 239000003822 epoxy resin Substances 0.000 claims description 12
- 229920000647 polyepoxide Polymers 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 238000005477 sputtering target Methods 0.000 claims description 5
- 238000000059 patterning Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 47
- 239000002356 single layer Substances 0.000 description 37
- 229920005989 resin Polymers 0.000 description 28
- 239000011347 resin Substances 0.000 description 28
- 238000000034 method Methods 0.000 description 22
- 239000007789 gas Substances 0.000 description 18
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 238000009713 electroplating Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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- H05K3/14—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using spraying techniques to apply the conductive material, e.g. vapour evaporation
- H05K3/16—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using spraying techniques to apply the conductive material, e.g. vapour evaporation by cathodic sputtering
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
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- C—CHEMISTRY; METALLURGY
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/20—Metallic material, boron or silicon on organic substrates
- C23C14/205—Metallic material, boron or silicon on organic substrates by cathodic sputtering
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- C—CHEMISTRY; METALLURGY
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/3407—Cathode assembly for sputtering apparatus, e.g. Target
- C23C14/3414—Metallurgical or chemical aspects of target preparation, e.g. casting, powder metallurgy
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- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/02—Local etching
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- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
- H05K1/0366—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement reinforced, e.g. by fibres, fabrics
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- H05K1/11—Printed elements for providing electric connections to or between printed circuits
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- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
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- H05K3/18—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using precipitation techniques to apply the conductive material
- H05K3/188—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using precipitation techniques to apply the conductive material by direct electroplating
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- 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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- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4644—Manufacturing multilayer circuits by building the multilayer layer by layer, i.e. build-up multilayer circuits
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- H01—ELECTRIC ELEMENTS
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- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/10—Bump connectors; Manufacturing methods related thereto
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- H01L2224/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
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- H01L2224/16151—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/16221—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
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- H01L2224/16221—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/16225—Disposition the bump connector connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being non-metallic, e.g. insulating substrate with or without metallisation
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Description
この搭載装置100の各単層基板1111、1112は、樹脂から成る基体103を有しており、基体103の表面には配線膜110が設けられている。また、基体103には接続孔102が設けられており、接続孔102の内部には、積層された単層基板1111、1112の配線膜110同士を接続する金属プラグ119が設けられている。
また、本発明は、前記基体はガラス繊維を含有し、前記基体の表面には、前記エポキシ樹脂と前記ガラス繊維とが露出された搭載装置である。
また、本発明は、前記基体には表面と裏面との間を貫通する接続孔が形成され、前記接続孔の内周面には、前記エポキシ樹脂と前記ガラス繊維とが露出され、前記接続孔の内周面には、前記合金薄膜が接触され、前記接続孔の内周面に位置する前記合金薄膜で囲まれた部分には、前記合金薄膜と接触して前記導電膜が充填された搭載装置である。
本発明は、基体と、所定パターンに形成された配線膜とを有し、電子部品を前記配線膜に電気的に接続させて前記基体上に搭載させる搭載装置を製造する搭載装置の製造方法であって、前記配線膜は、少なくとも前記基体の表面に露出したエポキシ樹脂に接触する合金薄膜と、前記合金薄膜と接触して配置された導電性の導電膜とを有し、真空雰囲気中に前記基体を配置し、前記真空雰囲気中にスパッタリングガスを導入し、前記真空雰囲気中に配置され、Cuを50原子%よりも多く含有し、Niを5原子%以上30原子%以下含有し、Alを3原子%以上10原子%以下含有するスパッタリングターゲットをスパッタリングして、前記基体の表面に、前記ターゲットと同じ組成の前記合金薄膜を形成する合金薄膜形成工程と、前記合金薄膜の表面に、Cuの体積含有率が前記合金薄膜よりも多い前記導電膜を形成する導電膜形成工程と、を有する搭載装置の製造方法である。
また、本発明は、前記導電膜形成工程は、前記合金薄膜が形成された前記基体をメッキ液に浸漬し、前記合金薄膜に、前記メッキ液に対して負電圧を印加し、前記メッキ液に含有され、銅を含む金属の正イオンを前記合金薄膜の表面に付着させて前記導電膜を成長させる成長工程を有する搭載装置の製造方法である。
また、本発明は、前記合金薄膜形成工程で形成された前記合金薄膜を一種類のエッチング液に接触させ、前記エッチング液に接触された部分の前記合金薄膜を溶解させて除去し、前記合金薄膜をパターニングするエッチング工程を有する搭載装置の製造方法である。
一種類のエッチング液によって合金薄膜をエッチングできるので、分離配置された銅膜を一回のエッチング工程により、一種類のエッチング液を用いてパターニングされた配線膜を形成することができる。
この搭載装置10は、支持基板14と、支持基板14の両面にそれぞれ配置された第一、第二の多層基板11、12とを有しており、第一、第二の多層基板11、12は、それぞれ複数の単層基板111〜113、121〜123を有している。
そして、各単層基板111〜113、121〜123の接続孔2は、下層の単層基板111、112、121、122の配線膜9又は、支持基板14の配線膜14d上に位置しており、各単層基板111〜113、121〜123の金属プラグ8は、下層の単層基板111、112、121、122の配線膜9又は、支持基板14の配線膜14dに電気的に接続されている。
第一の多層基板11の最上層の単層基板113の配線膜9には、半導体装置13の端子13bが固定されており、第二の多層基板12の最上層の単層基板123の配線膜9は、金属体24を介して、マザーボード20の配線膜20bに電気的に接続されている。
先ず、その単層基板112の表面上に、同図(b)に示すように、基体3を貼付する。
貼付する基体3は、貼付する前に接続孔2が形成されていてもよいし、基体3を貼付した後、接続孔2を形成してもよい。
このスパッタリング装置50は、搬出入室51aと、前処理室51bと、成膜室51cとを有している。
各室51a〜51cには、それぞれ真空排気装置58a〜58cが接続されており、各室51a〜51cの間のゲートバルブ59a、59bを閉じ、真空排気装置58b、58cを動作させて、前処理室51bの内部と、成膜室51cの内部とを真空排気し、前処理室51bの内部と成膜室51cの内部とに、それぞれ真空雰囲気を形成しておく。
搬出入室51aの扉を閉じ、内部雰囲気を大気から遮断して真空排気装置58aを動作させ、搬出入室51aの内部を真空排気する。
仕掛基板32が所定温度に昇温された後、ゲートバルブ59aが開けられ、仕掛基板32は、搬送装置54と一緒に搬出入室51aの内部から前処理室51bの内部に移動される。
このターゲット55は、Cuを50原子%よりも多く含有し、Niを5原子%以上30原子%以下含有し、Alを3原子%以上10原子%以下含有するターゲットである。
合金薄膜15が所定膜厚に形成された後、ターゲット55への電圧印加とスパッタリングガス導入が停止され、スパッタリングは終了する。
ゲートバルブ59a、59bが閉じられた後、搬出入室51aに気体が導入され、搬出入室51aの内部が大気圧になった後、合金薄膜15が形成された仕掛基板33は搬出入室51aから取り出される。
このレジスト膜28には、最上層の基体3の各接続孔2の上方と、その基体3の表面上の合金薄膜15の所定位置の上方とに、開口29が形成されており、開口29の底面下には、各接続孔2の底面と内周側面に配置された合金薄膜15、又は、基体3の表面上に位置する合金薄膜15が露出されている。
接続孔2の内部の導電膜6は、基体3の表面上の導電膜7に接続されているが、基体3の表面上の導電膜7には、互いに分離された導電膜7があるものの、レジスト膜28を剥離した状態では、各導電膜6、7は、合金薄膜15によって、互いに電気的に接続された状態である。
本願発明では、樹脂と接触する合金薄膜4、5の、Cuを50原子%よりも多く含有する薄膜材料に、下記実験に示すように、Cu以外の元素を含有させて密着力を測定したところ、Niを5原子%以上30原子%以下含有し、Alを3原子%以上10原子%以下含有する薄膜材料が、純銅や酸化銅の薄膜の密着性よりも、樹脂に対する密着性は、高くなっている。
表1の測定結果から、剥離強度の値が800以上になるためには、Niは5原子%以上30原子%以下、Alは3原子%以上10原子%以下が必要なことが分かる。
なお、比較対象として、Mgを2原子%含有し、Alを8原子%含有し、残りはCuから成る配線膜の密着力を測定したところ、320gf/cmであった。このことから、AlとNiを添加した合金膜と比べ、AlとMgを添加した合金膜では密着力の向上は小さいことが分かる。
3……基体
4、5……合金薄膜
6、7……導電膜
8……金属プラグ
9……配線膜
10……搭載装置
55……ターゲット
Claims (6)
- 基体と、
少なくとも前記基体の表面に露出したエポキシ樹脂に接触し、所定パターンに形成された配線膜とを有し、電子部品を前記配線膜に電気的に接続させて前記基体上に搭載させる搭載装置であって、
前記配線膜は、
Cuを50原子%よりも多く含有し、Niを5原子%以上30原子%以下含有し、Alを3原子%以上10原子%以下含有し、前記基体の表面と接触された合金薄膜と、
前記合金薄膜の表面と接触し、Cuを前記合金薄膜よりも多く含有する導電性の導電膜と、
を有する搭載装置。 - 前記基体はガラス繊維を含有し、
前記基体の表面には、前記エポキシ樹脂と前記ガラス繊維とが露出された請求項1記載の搭載装置。 - 前記基体には表面と裏面との間を貫通する接続孔が形成され、前記接続孔の内周面には、前記エポキシ樹脂と前記ガラス繊維とが露出され、
前記接続孔の内周面には、前記合金薄膜が接触され、
前記接続孔の内周面に位置する前記合金薄膜で囲まれた部分には、前記合金薄膜と接触して前記導電膜が充填された請求項1記載の搭載装置。 - 基体と、
所定パターンに形成された配線膜とを有し、電子部品を前記配線膜に電気的に接続させて前記基体上に搭載させる搭載装置を製造する搭載装置の製造方法であって、
前記配線膜は、少なくとも前記基体の表面に露出したエポキシ樹脂に接触する合金薄膜と、
前記合金薄膜と接触して配置された導電性の導電膜とを有し、
真空雰囲気中に前記基体を配置し、前記真空雰囲気中にスパッタリングガスを導入し、前記真空雰囲気中に配置され、Cuを50原子%よりも多く含有し、Niを5原子%以上30原子%以下含有し、Alを3原子%以上10原子%以下含有するスパッタリングターゲットをスパッタリングして、前記基体の表面に、前記ターゲットと同じ組成の前記合金薄膜を形成する合金薄膜形成工程と、
前記合金薄膜の表面に、Cuの体積含有率が前記合金薄膜よりも多い前記導電膜を形成する導電膜形成工程と、
を有する搭載装置の製造方法。 - 前記導電膜形成工程は、前記合金薄膜が形成された前記基体をメッキ液に浸漬し、前記合金薄膜に、前記メッキ液に対して負電圧を印加し、前記メッキ液に含有され、銅を含む金属の正イオンを前記合金薄膜の表面に付着させて前記導電膜を成長させる成長工程を有する請求項4記載の搭載装置の製造方法。
- 前記合金薄膜形成工程で形成された前記合金薄膜を一種類のエッチング液に接触させ、前記エッチング液に接触された部分の前記合金薄膜を溶解させて除去し、前記合金薄膜をパターニングするエッチング工程を有する請求項5記載の搭載装置の製造方法。
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