TWI402324B - 半導體表面保護薄片及方法 - Google Patents
半導體表面保護薄片及方法 Download PDFInfo
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- TWI402324B TWI402324B TW093133247A TW93133247A TWI402324B TW I402324 B TWI402324 B TW I402324B TW 093133247 A TW093133247 A TW 093133247A TW 93133247 A TW93133247 A TW 93133247A TW I402324 B TWI402324 B TW I402324B
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- Taiwan
- Prior art keywords
- protective layer
- surface protective
- wafer
- fluid
- semiconductor
- Prior art date
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000012530 fluid Substances 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000000227 grinding Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 206010073306 Exposure to radiation Diseases 0.000 claims abstract description 10
- 239000011241 protective layer Substances 0.000 claims description 98
- 230000001681 protective effect Effects 0.000 claims description 36
- 239000007787 solid Substances 0.000 claims description 25
- 150000001875 compounds Chemical class 0.000 claims description 19
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 17
- 238000003860 storage Methods 0.000 claims description 16
- 239000010410 layer Substances 0.000 claims description 13
- 239000004593 Epoxy Substances 0.000 claims description 8
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 8
- 239000004925 Acrylic resin Substances 0.000 claims description 7
- 229920000178 Acrylic resin Polymers 0.000 claims description 7
- 125000002091 cationic group Chemical group 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 6
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- 239000011347 resin Substances 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 5
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- 238000000576 coating method Methods 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
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- 239000007870 radical polymerization initiator Substances 0.000 claims description 3
- FSYPIGPPWAJCJG-UHFFFAOYSA-N 2-[[4-(oxiran-2-ylmethoxy)phenoxy]methyl]oxirane Chemical compound C1OC1COC(C=C1)=CC=C1OCC1CO1 FSYPIGPPWAJCJG-UHFFFAOYSA-N 0.000 claims description 2
- NEPKLUNSRVEBIX-UHFFFAOYSA-N bis(oxiran-2-ylmethyl) benzene-1,4-dicarboxylate Chemical compound C=1C=C(C(=O)OCC2OC2)C=CC=1C(=O)OCC1CO1 NEPKLUNSRVEBIX-UHFFFAOYSA-N 0.000 claims description 2
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- PLDLPVSQYMQDBL-UHFFFAOYSA-N 2-[[3-(oxiran-2-ylmethoxy)-2,2-bis(oxiran-2-ylmethoxymethyl)propoxy]methyl]oxirane Chemical compound C1OC1COCC(COCC1OC1)(COCC1OC1)COCC1CO1 PLDLPVSQYMQDBL-UHFFFAOYSA-N 0.000 description 2
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- 239000004416 thermosoftening plastic Substances 0.000 description 2
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- QWUWMCYKGHVNAV-UHFFFAOYSA-N 1,2-dihydrostilbene Chemical group C=1C=CC=CC=1CCC1=CC=CC=C1 QWUWMCYKGHVNAV-UHFFFAOYSA-N 0.000 description 1
- MSAHTMIQULFMRG-UHFFFAOYSA-N 1,2-diphenyl-2-propan-2-yloxyethanone Chemical compound C=1C=CC=CC=1C(OC(C)C)C(=O)C1=CC=CC=C1 MSAHTMIQULFMRG-UHFFFAOYSA-N 0.000 description 1
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 description 1
- PIZHFBODNLEQBL-UHFFFAOYSA-N 2,2-diethoxy-1-phenylethanone Chemical compound CCOC(OCC)C(=O)C1=CC=CC=C1 PIZHFBODNLEQBL-UHFFFAOYSA-N 0.000 description 1
- UHFFVFAKEGKNAQ-UHFFFAOYSA-N 2-benzyl-2-(dimethylamino)-1-(4-morpholin-4-ylphenyl)butan-1-one Chemical compound C=1C=C(N2CCOCC2)C=CC=1C(=O)C(CC)(N(C)C)CC1=CC=CC=C1 UHFFVFAKEGKNAQ-UHFFFAOYSA-N 0.000 description 1
- KMNCBSZOIQAUFX-UHFFFAOYSA-N 2-ethoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OCC)C(=O)C1=CC=CC=C1 KMNCBSZOIQAUFX-UHFFFAOYSA-N 0.000 description 1
- KLAMVBJBHNQYSB-UHFFFAOYSA-N 2-ethyl-1-phenylbutan-1-one Chemical compound CCC(CC)C(=O)C1=CC=CC=C1 KLAMVBJBHNQYSB-UHFFFAOYSA-N 0.000 description 1
- XMLYCEVDHLAQEL-UHFFFAOYSA-N 2-hydroxy-2-methyl-1-phenylpropan-1-one Chemical compound CC(C)(O)C(=O)C1=CC=CC=C1 XMLYCEVDHLAQEL-UHFFFAOYSA-N 0.000 description 1
- BQZJOQXSCSZQPS-UHFFFAOYSA-N 2-methoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OC)C(=O)C1=CC=CC=C1 BQZJOQXSCSZQPS-UHFFFAOYSA-N 0.000 description 1
- ROGIWVXWXZRRMZ-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1 ROGIWVXWXZRRMZ-UHFFFAOYSA-N 0.000 description 1
- ZYUVGYBAPZYKSA-UHFFFAOYSA-N 5-(3-hydroxybutan-2-yl)-4-methylbenzene-1,3-diol Chemical compound CC(O)C(C)C1=CC(O)=CC(O)=C1C ZYUVGYBAPZYKSA-UHFFFAOYSA-N 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- UXRNWUYCCQFHIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C UXRNWUYCCQFHIH-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
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- 230000000996 additive effect Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 1
- QUZSUMLPWDHKCJ-UHFFFAOYSA-N bisphenol A dimethacrylate Chemical compound C1=CC(OC(=O)C(=C)C)=CC=C1C(C)(C)C1=CC=C(OC(=O)C(C)=C)C=C1 QUZSUMLPWDHKCJ-UHFFFAOYSA-N 0.000 description 1
- PVEOYINWKBTPIZ-UHFFFAOYSA-N but-3-enoic acid Chemical class OC(=O)CC=C PVEOYINWKBTPIZ-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- NHADDZMCASKINP-HTRCEHHLSA-N decarboxydihydrocitrinin Natural products C1=C(O)C(C)=C2[C@H](C)[C@@H](C)OCC2=C1O NHADDZMCASKINP-HTRCEHHLSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012954 diazonium Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Substances OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- 238000007757 hot melt coating Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000005510 radiation hardening Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—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
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67132—Apparatus for placing on an insulating substrate, e.g. tape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
- B24B7/228—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding thin, brittle parts, e.g. semiconductors, wafers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/35—Heat-activated
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2461/00—Presence of condensation polymers of aldehydes or ketones
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2463/00—Presence of epoxy resin
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Weting (AREA)
- Formation Of Insulating Films (AREA)
Description
本發明係關於一種半導體表面保護方法及表面保護薄片,其用於在晶圓之背面研磨期間保護半導體晶圓的含電路之側面。更具體言之,本發明係關於一種半導體表面保護方法及表面保護薄片,其允許半導體晶圓之超薄背面研磨,或允許在電路側面上具有諸如焊料凸塊之高突起部分的半導體晶圓之背面研磨。
半導體晶圓之薄化(thinning)(本文中亦被稱為"研磨")習知地係藉由"背面研磨"方法達成的,藉此方法晶圓之電路側面由一表面保護薄片加以保護且與該電路側面相對之背面被研磨。矽晶圓之厚度在一工業等級上一般為150 μm,但仍需要甚至更薄之晶圓厚度。當晶圓被研磨至更小厚度時,歸因於電路側面上之不規則性的研磨表面(背面)之不平坦現象,意即電路圖案轉移至背面的現象變得更加顯著。此種背面轉移現象之原因將如下加以解釋。當前使用之壓敏膠黏劑表面保護薄片在其適應半導體晶圓上之電路的不規則性的能力上為有限的。因此,在壓敏膠黏劑層與該電路側面之間產生間隙(氣囊),使得在彼等區域中晶圓不直接由壓敏膠黏劑(保護層)支撐。當晶圓被研磨成很薄時,晶圓在垂直方向上在電路晶粒間之未支撐的切割線(道(street))上移位,同時壓縮該氣囊,因而晶圓在該等區域中未被研磨,且保持為比其它部分更厚。另一方面,當存在諸如凸
塊之硬突起部分時,將晶圓研磨至更大程度且因此變得比其它部分更薄。若經修整之厚度為150 μm或更大,則此現象不成問題,但若將晶圓薄化至小於100 μm(尤其當修整為一50 μm或更小厚度時),或若晶圓電路側面上(例如,以100 μm或更大)存在諸如凸塊之高突起部分,則不僅該晶圓之橫向強度會顯著減小,且在嚴重情況下該晶圓甚至可在研磨期間被損壞。同樣地,當晶圓被細研磨至約50 μm時,該晶圓之邊緣碎裂(edge chipping)或該晶圓與表面保護層間之研磨水之滲透將構成問題,但此問題亦由缺乏表面保護薄片與該晶圓邊緣之黏著力引起。此外,對於薄的且亦在電路側面上具有凸塊或其它100 μm或更大之突起部分的半導體晶圓,難以藉由附著典型表面保護薄片來達成研磨。
一習知表面保護薄片通常為一在一聚合薄膜材料上具有一作為一表面保護層之壓敏膠黏劑層的薄片。將該壓敏膠黏劑設計成具有一低彈性模數以遵循電路側面上之不規則性。然而,若此趨勢過強,則當藉由剝離將該薄片自晶圓移除時,該晶圓可經受相當大之應力且遭受損壞。此已促成能量射束可剝離保護薄片之開發,其中藉由用諸如紫外線之能量射束之照射來使該壓敏膠黏劑硬化以在剝離之前降低該晶圓與保護薄片間之黏著強度。然而,一個經常發生之問題在於:在研磨期間該壓敏膠黏劑層在非硬化狀態下過度可撓,且該晶圓因此在研磨期間遭受損壞。
日本未審查專利公開案HEI第11-26404號揭示一種晶圓研磨方法,藉此將前述能量射束可剝離保護薄片附著至一
電路形成之(circuit-formed)晶圓且該壓敏膠黏劑層由一能量射束加以硬化,其後將該晶圓之背面研磨。然而,因為該壓敏膠黏劑不為流體的,所以其對晶圓電路側面上之不規則性的適應性不充分。
日本未審查專利公開案第2000-38556號揭示一種熱熔半導體表面保護薄片。該熱熔薄片在60-100℃下加熱時熔化且顯示流體特性,且因此能適應電路側面上之不規則性且顯示優良研磨特性。然而,當溫度升高至熔點之上時該薄片重複熔化。在大多數情況下,已由一保護薄片層壓(laminate)之半導體晶圓在一用於連接晶片之膜或一"晶粒附著膜"(下文中被稱為"DAF")的層壓期間,或在使用濺鍍之金屬膜形成步驟期間,會經受後繼加熱。因此,在該等步驟中所產生之溫度升高已導致包括保護薄片之再熔化等問題。
本發明之一態樣的一目的為提供一種半導體表面保護方法,該方法使用一種對半導體晶圓電路側面上之不規則性具有足夠適應性且作為研磨期間之一支撐物具有充分剛性之材料,且該材料不會隨重複的溫度升高而變為流體;以及一種可用於該方法之表面保護薄片。
大體而言,本發明提供一種半導體表面保護方法,藉以在晶圓之背面研磨期間保護該半導體晶圓之電路側面,該方法包含:藉由一種在輻射曝露或加熱後會硬化之流體表面保護層之方法將半導體晶圓之電路側面接合至一種聚合
薄膜材料;及硬化該表面保護層。
根據一種模式,本發明提供一種半導體表面保護方法,藉以在晶圓之背面研磨期間保護半導體晶圓之電路側面,該方法包含:經由在室溫下為流體或可藉由加熱變為流體且在輻射曝露或加熱後會硬化之表面保護層將該半導體晶圓之電路側面接合至一種聚合薄膜材料;及硬化該表面保護層。
根據另一模式,本發明提供一種半導體表面保護方法,藉以在晶圓之背面研磨期間保護半導體晶圓之電路側面,該方法包含:提供一包含一種聚合薄膜材料之表面保護薄片,該聚合薄膜材料上形成有一表面保護層,該表面保護層在室溫下為固體,加熱後變為流體且在輻射曝露後或加熱至一高於流化溫度之溫度後硬化;加熱該表面保護薄片致使該表面保護層變成流體;置放該半導體晶圓之電路側面使其接觸經流化之表面保護層;及硬化該表面保護層。
根據另一模式,本發明提供一種表面保護薄片以用於在晶圓之背面研磨期間保護該半導體晶圓之電路側面,該表面保護薄片包含一種聚合薄膜材料,該材料上提供有一表面保護層,該表面保護層在室溫下為固體,加熱後變為流體且在輻射曝露後或加熱至一高於流化溫度之溫度後硬化。
在前述方法中,該表面保護層在流體狀態下接觸晶圓電路側面且因此向形成於該電路側面上之表面輪廓提供一充分適應性。該具有充分適應性之保護層在經硬化後顯示較
高剛性,並因而保護該晶圓電路側面。同樣地,該保護層一旦硬化,其在諸如晶粒附著薄膜層壓步驟或濺鍍金屬薄膜形成步驟之後繼加熱步驟中將不再發生流化。
可藉由使用前述表面保護薄片來進行前述保護方法。
貫穿本說明書,術語"流體"係指一樣品之黏彈性分佈的狀態,其中彈性剪力損耗模數(G")大於彈性剪力儲存模數(G'),或Tanδ(=G"/G')大於或等於1。
貫穿本說明書,術語"彈性剪力儲存模數(G')"及"彈性剪力損耗模數(G")"分別指硬化前之該表面保護層材料之彈性剪力儲存模數及彈性剪力損耗模數。該等剪力儲存及損耗模數值係藉由使用一黏彈性量測裝置以10 Hz之頻率、0.04%之形變及3℃/分鐘之溫度斜率(temperature-ramp rate)記錄於一圖表中。
更具體言之,其係針對具有25 mm之直徑及0.6 mm之厚度的表面保護層之測試樣品藉由使用一黏彈性量測裝置(ARES,Rheometrics之產品)來加以量測的。
術語"彈性張力儲存模數(E')"及"彈性張力損耗模數(E")分別指硬化後之彈性張力儲存模數及彈性張力損耗模數。該等張力儲存及損耗模數值係藉由使用一黏彈性量測裝置以1 Hz之頻率、0.04%之形變及5℃/分鐘之溫度斜率記錄於一圖表中。
更具體言之,其係針對硬化後(例如,在用80 W/cm之高壓汞燈進行紫外線照射達3秒鐘後)切割成22.7 mm×10 mm×50 μm大小的表面保護層之測試樣品藉由使用一黏彈
性量測裝置(SOLIDS ANALYZER RSA II,Rheometrics之產品)加以量測的。
現將參考附圖對本發明進行更詳細之解釋。
圖1為本發明之半導體表面保護方法一實施例的第一流程圖。
首先,提供一可由光或熱加以硬化的流體表面保護層材料(步驟(a))。該表面保護層材料可為室溫(約20-25℃)下之流體或可藉由加熱而流化的室溫下之固體。隨後將表面保護層3材料均勻塗覆於晶圓1之電路側面2上(步驟(b))。接著將一聚合薄膜材料4置放於該保護層3上(步驟(c)),並藉由紫外線或加熱將該保護層3硬化(步驟(d))。在此期間,必須注意避免在該保護層3與該晶圓1間之界面上、該保護層3與該聚合薄膜材料4間之界面上、或該保護層3中混入空氣。空氣之混入將妨礙晶圓上之一平滑研磨表面,使得不可能將該晶圓薄研磨成一均勻厚度,或可能在研磨期間導致該晶圓之損壞。在一真空中執行該過程可防止空氣混入。
圖2為本發明之半導體表面保護方法之另一實施例的第二流程圖。
首先,在一聚合薄膜材料4上形成一在室溫(約20-25℃)下為固體且可藉由光線照射或在高溫下加熱而硬化的表面保護層3以製備一表面保護薄片5(步驟(a))。此步驟可藉由使用溶液塗覆及乾燥方法或藉由熱熔塗覆方法來進行。下一步,在一足以流化該保護層3之溫度下加熱該表面保護薄片5(步驟(b))。將晶圓1置放於該經流化之保護層上使得該
電路側面2與該保護層3相接觸(步驟(c))。在該保護層3冷卻後再次形成一固體(步驟(c'))。重整該固體將有助於處理該晶圓/保護薄片層壓。隨後可由紫外線或熱來硬化該保護層3。若使用熱,則所使用之溫度大於流化該表面保護層所需之溫度(步驟(d))。由於如第一流程圖中相同之原因,此一系列步驟亦可在真空中執行。然而,已發現使用一加熱層壓機來執行步驟(b)之加熱及步驟(c)之接觸將更加便利。當使用加熱層壓機時,可藉由自晶圓之邊緣將晶圓1逐漸接觸經加熱流化之保護層3來防止空氣混入。
現將解釋本發明之一表面保護薄片。
在一實施例中,本發明之表面保護薄片之表面保護層為一種在室溫下為固體,加熱後變為流體且輻射曝露後或加熱至一高於流化溫度之溫度時硬化的材料。如上文提及,術語"流體"係指一樣品的黏彈性分佈之狀態,其中彈性剪力損耗模數(G")大於彈性剪力儲存模數(G'),或Tanδ(=G"/G')1。該固體表面保護層之流化溫度較佳為30-100℃且更佳為約35-60℃。若Tanδ=1時之溫度高於100℃,則對該表面保護薄片之層壓而言,該過程必須在高於100℃時執行,此在設備及生產力方面為不利的。若Tanδ=1時之溫度低於30℃,且尤其低於室溫(20℃),則當將該薄片包裝進一捲筒且儲存時,其儲存穩定性將很差。該經硬化之保護層在50℃下較佳具有一5×107
Pa或更大之彈性張力儲存
模數(E')。此等級之彈性模數可確保在研磨期間作為支撐物的足夠剛性,且允許將晶圓研磨至極其薄且均勻之厚度。
在另一實施例中,該表面保護層在室溫下為流體且在輻射曝露後或加熱至一高於室溫之溫度後硬化。
較佳地,該表面保護層含有一可聚合化合物,其在分子中具有兩個或兩個以上烯系不飽和基團或兩個或兩個以上陽離子可聚合基團。作為含有兩個或兩個以上烯系不飽和基團的表面保護層之特定材料,存在所提及的自由基可聚合化合物,諸如:(1)在室溫(20-25℃)下為結晶態或蠟狀的低分子化合物,包括異氰脲酸衍生之(甲基)丙烯酸酯,諸如三丙烯基氧乙基異三聚氰酸酯或三甲基丙烯基氧乙基異三聚氰酸酯,異戊四醇衍生之(甲基)丙烯酸酯,諸如異戊四醇四甲基丙烯酸酯或異戊四醇二丙烯酸酯單硬脂酸酯,或雙酚A衍生之(甲基)丙烯酸酯,諸如雙酚A二甲基丙烯酸酯;(2)在室溫下為固體的具有10,000或更大分子量之(甲基)丙烯酸胺基甲酸酯樹脂;或(3)在室溫(20-25℃)下為固體的具有1000或更大分子量之以下樹脂:酚-酚醛環氧(甲基)丙烯酸樹脂、甲酚-酚醛環氧(甲基)丙烯酸樹脂及雙酚A環氧二(甲基)丙烯酸樹脂。
作為用於表面保護層之特定材料,亦可適當使用陽離子可聚合化合物,包括:1)基於環氧的低分子化合物,諸如對苯二酚二縮水甘油醚或對苯二甲酸二縮水甘油酯,其在室溫下為結晶態或蠟狀;及2)在室溫下為固體的具有1000或更大分子量之酚-酚醛環氧樹脂、甲酚-酚醛環氧樹脂及雙
酚A環氧樹脂。
在另一實施例中,該表面保護層在室溫下為流體且在輻射曝露後及/或加熱至一高於室溫之溫度後硬化。用於表面保護層之材料亦可含有一種當該層在添加各組份後可在常溫下作為一固體加以處理時在常溫下為流體之可聚合化合物。作為流體自由基可聚合化合物之樣品,可存在所提及之(甲基)丙烯酸酯化合物,諸如:三羥甲基丙烷三(甲基)丙烯酸酯、異戊四醇三(甲基)丙烯酸酯、異戊四醇四(甲基)丙烯酸酯、二異戊四醇單羥基戊(甲基)丙烯酸酯、二異戊四醇六(甲基)丙烯酸酯及1,6-己二醇二(甲基)丙烯酸酯或乙烯醚衍生物,諸如乙二醇二乙烯醚。
作為液體陽離子可聚合化合物,存在所提及之含聚環氧化物之化合物,諸如山梨醇四縮水甘油醚、異戊四醇四縮水甘油醚、三羥甲基丙烷三縮水甘油醚及雙酚A二縮水甘油醚及其類似物。
連同該可聚合化合物,該表面保護層可進一步包含一種熔點或軟化點在25-100℃範圍內變化之熱塑性樹脂,其量不妨礙本發明之目標。熱塑性樹脂之代表性樣品包括聚烯烴共聚物,諸如:低密度聚乙烯(LDPE);乙烯-丙烯酸乙酯共聚物(EEA);乙烯-乙酸乙烯酯共聚物(EVA)及離子鍵共聚物樹脂(IONO);熱塑性彈性體,諸如:基於丁二烯之彈性體、基於苯乙烯-異戊二烯之彈性體及基於酯之彈性體;丙烯酸樹脂,諸如甲基丙烯酸甲酯;基於聚氯乙烯之樹脂,諸如乙烯基氯-乙酸乙烯酯共聚物;熱塑性聚酯;聚胺基甲
酸酯及其類似物。此等物用於在硬化之前升高或調整該表面保護層之流化溫度(Tanδ1)的目的。其亦可使該保護層在硬化後具有可撓性。
當該表面保護層為可藉由曝露於輻射而硬化的光固性(photosetting)或可光致固化(photocurable)之類型時,其通常包括一種吸收光線來產生自由基或陽離子以引發聚合反應的光起始劑。作為特定自由基聚合起始劑,可存在所提及之二苯乙二酮、安息香甲醚、安息香乙醚、安息香異丙醚、苄基二苯硫、偶氮二異丁腈、聯苄基、聯乙醯、苯乙酮、二乙氧基苯乙酮、1-羥基環己基苯基酮、2-羥基-2-甲基-1-苯基丙烷-1-酮及2-苄基-2-二甲胺基-1-(4-嗎啉苯基)-丁酮-1,且作為陽離子聚合起始劑,存在所提及之烯丙基重氮鹽、烯丙基鋶鹽、烯丙基錪鹽及其類似物。該自由基聚合起始劑或陽離子聚合起始劑之量並不受特別限制,但其通常為以該可聚合化合物重量計之0.1-10重量%。
對藉由加熱而硬化之熱設定類型而言,該保護層通常包括一熱聚合起始劑。熱聚合起始劑包括:偶氮二異丁腈、過氧化苯甲醯及其類似物。
在不損害諸如流動性及硬化後彈性張力儲存模數的所需特性之範圍內,該表面保護層亦可包含一諸如填充劑、抗氧化劑、增塑劑或其類似物之添加劑。該表面保護層之厚度可視需要設定在比該半導體晶圓之含電路側面上的表面輪廓之量值大至少10 μm的範圍內,但考慮到作為整體的表面保護薄片之全部厚度之均勻度,其一般為20-300 μm(包
含20及300 μm),較佳地為30-200 μm且更加為50-150 μm。
在一實施例中,該聚合薄膜材料支撐該表面保護層以提供一薄片。只要該聚合薄膜材料為一適於此應用的具有一均勻厚度之聚合體薄膜,其並不受特別限制。然而,當藉由曝露於輻射(諸如紫外線或可視光線)來硬化該表面保護層時,其對紫外線(或可視光線)必須為足夠可滲透的。舉例而言,可使用諸如聚對苯二甲酸乙二酯之聚酯;諸如聚丙烯或聚氯乙烯樹脂之聚烯烴樹脂;聚偏氯乙烯樹脂;聚醯胺樹脂及其類似物。該膜之厚度並不受特別限制,但其較佳為可用於提供適合將該膜連同該保護層自該晶圓之電路側面一起剝離移除的彎曲可撓性。因此該聚合薄膜材料之厚度通常為50-300 μm。
在一實施例中,該表面保護薄片係以下列方式加以製造的:將形成該表面保護層之固體材料加熱(例如,在約50-100℃下)以將其流化。隨後藉由使用適當構件(如一刮刀式塗佈機)將該流體層均勻塗覆至諸如聚酯膜之適當聚合薄膜材料上,且接著將其冷卻以形成根據本發明之表面保護薄片。或者,可將該保護層之固體材料溶解於諸如甲基乙基酮(MEK)之適當溶劑中以製備一塗佈溶液,且接著可以相同方式將此溶液均勻塗覆至一聚合薄膜材料上且將該溶劑蒸發以獲得根據本發明之表面保護薄片。
在一實施例中,本發明之表面保護薄片可在加熱後或在加熱期間藉由接觸黏結至一半導體晶圓之電路側面來加以層壓。亦可將該薄片與該晶圓之電路側面接觸黏結於一真空腔室中。此方法可達成完全層壓而無空氣混入。
研磨與該晶圓之電路側面相對之側面以使該晶圓變薄,而該電路側面受該表面保護薄片之保護。隨後藉由一拋光步驟來處理該研磨表面。作為拋光步驟,可存在所提及之化學蝕刻、化學機械拋光(CMP)、乾拋光或其類似方法,此等方法廣泛用於此目的。視應用之不同而定,此步驟之後可跟隨任何所需的諸如濺鍍或氣相沈積之金屬膜成型步驟,或安裝一晶片所必需的層壓一晶粒附著膜的步驟。儘管此等步驟為加熱步驟,但本發明之表面保護薄片具有足夠耐熱性且因此可忍受此等步驟。隨後藉由層壓經研磨及拋光之側面將由前述之背面處理步驟所得之晶圓附著至一切割薄片,此後該表面保護薄片在隨後之切割步驟之前藉由將其剝離而被移除。
上文之說明假定一種使用一表面保護薄片的半導體表面保護方法,但如圖1之流程圖所示,亦可藉由使用一流體保護層來執行本發明之方法。在此情況中用於保護層之材料可與用於前述保護薄片之材料相同,但其亦可為一種在室溫下為流體之材料。因此,可使用在室溫下為流體的自由基可聚合化合物,例如:三羥甲基丙烷三(甲基)丙烯酸酯、異戊四醇三(甲基)丙烯酸酯、異戊四醇四(甲基)丙烯酸酯、二異戊四醇單羥戊基(甲基)丙烯酸酯、二異戊四醇六(甲基)
丙烯酸酯及1,6-乙二醇二(甲基)丙烯酸酯、或諸如乙二醇二乙烯基醚之乙烯基醚衍生物;及在室溫下為流體之陽離子可聚合化合物,例如聚環氧化物化合物,諸如:山梨醇四縮水甘油醚、異戊四醇四縮水甘油醚、三羥甲基丙烷三縮水甘油醚及雙酚A二縮水甘油醚及其類似物。亦可包括前述之熱塑性樹脂。
本發明之表面保護薄片不侷限於對半導體晶圓之電路側面的保護,且替代地可有效適用於需要對表面不規則性具有適應性的其它應用。
將具有以下組合物之混合物用作表面保護薄片之保護層的材料。實例1-3及比較實例中之組合物在室溫下為固體。
實例4之組合物在室溫下為流體。
A)固體(在室溫下)表面保護層
藉由使用實例1-3及比較實例中之組合物來製備MEK(甲基乙基酮)中的每一表面保護層組合物之70%固體重量比的溶液。隨後將此等溶液刮刀塗覆至100 μm厚的聚乙烯對苯二甲酸酯(PET)膜上並在烘箱中於100℃下乾燥以提供具有約50 μm之表面保護層之厚度的表面保護薄片。
B)流體(在室溫下)表面保護層
將實例4之組合物旋塗至一半導體晶圓上,該組合物當以1.86秒鐘-1
剪力速率來量測時具有100厘泊(centipoise)之室溫黏度。
所得表面保護層具有一約為50 μm之厚度。
A)固體(在室溫下)表面保護層
將該等實例中之表面保護薄片均在其邊緣處黏著至固持於一真空腔室之底表面的玻璃板使得該表面保護層被曝露,接著用熱空氣加熱至70℃以將該表面保護層流化至一高度黏性流體狀態。下一步,在矽晶圓上降低該真空腔室且使其電路圖案側面朝上,且接著在將玻璃板與黏著至玻璃板之保護薄片/經流化之表面保護層釋放且將其與晶圓之電路側面接觸之前抽空該腔室。將該真空腔室移除並自該表面保護薄片/半導體晶圓物件分離該玻璃板。接著藉由曝露於來自聚合薄膜材料側面之紫外光線來硬化該保護層。此可藉由使用一Fusion UV燈("Light Hammier" LH6,可自Gaithersburg,Maryland的Fusion UV系統公司購得)來進行,其在一8英吋之半導體晶圓上提供一如下UV強度分佈:在晶圓之中心點處約為240毫瓦特/平方公分且在晶圓之邊緣處為150毫瓦特/平方公分。曝露時間為3秒鐘。
將該比較實例中之表面保護薄片流化且藉由使用一手壓滾筒在約60℃下將其層壓至一矽晶圓之電路圖案側面。
B)流體(在室溫下)表面保護層
將一黏著有一聚酯膜的玻璃板固定至一真空腔室之底部。下一步,在矽晶圓上降低該真空腔室,其分佈電路、朝上之表面由一流體表面保護層塗層覆蓋。接著在將玻璃板與黏著至玻璃板之聚酯膜釋放且將該膜與晶圓上之流體表面保護層接觸之前抽空該腔室。該聚酯膜與流體表面保護層之組合在該晶圓上形成一表面保護薄片。移除該真空腔室並將該玻璃板自該表面保護薄片/半導體晶圓物件分離。如上文部分A中之描述,隨後藉由曝露於來自該聚合薄膜材料側面之紫外光線來硬化該保護層。
在該電路圖案側面上由該等實例及比較實例之表面保護薄片加以保護的矽晶圓經受至50 μm表面處理之背面研磨。
將在該電路圖案側面上由該等實例及比較實例之表面保護薄片加以保護的矽晶圓研磨至50 μm之厚度。接著將上面具有表面保護薄片的經研磨之晶圓置放於一180℃之熱板上,使該表面保護薄片接觸該熱板並在此處保持3分鐘。
以180度之剝離角度藉由手動將該保護薄片自該矽晶圓移除,且藉由使用一接觸粗糙度測定儀來量測該保護層表面輪廓及晶圓電路側面表面輪廓。
藉由使用一黏彈性量測裝置(ARES,可自Rheometrics購得)以10 Hz之頻率、0.04%之形變及3℃/分鐘之溫度斜率來
以溫度斜面模式量測該等彈性剪力儲存模數(G')及彈性剪力損耗模數(G")。測得該等未經硬化之表面保護層之測試樣品的直徑為25 mm且厚度為0.6 mm。藉由使用一黏彈性量測裝置(SOLIDS ANALYZER RSA II,可自Rheometrics購得)以1 Hz之頻率、0.04%之形變及5℃/分鐘之溫度斜率以溫度斜面模式來量測該等彈性張力儲存模數(E')及彈性張力損耗模數(E")。所測得的經硬化之表面保護層之測試樣品的尺寸為22.7 mm×10 mm×50 μm。
當由實例1-4中之保護薄片加以保護的晶圓經背面研磨至一50 μm之厚度時,獲得無電路圖案背面轉移或邊緣碎裂之滿意研磨結果。然而,在比較實例中,在100 μm之研磨厚度處已可見電路圖案背面轉移,且繼續之研磨在該晶圓之外周邊的約一半處(在70 μm之厚度處)產生邊緣碎裂。最後,研磨至50 μm導致自邊緣部分的研磨水滲透,並致使大部分晶圓被損壞。
對實例1-4而言,在將該表面保護層自該晶圓剝離時未觀察到任何問題。而比較實例中很難剝離。
該半導體晶圓之電路側面的表面輪廓與實例1-4中與該晶圓之電路側面相接觸的表面保護層表面之表面輪廓相匹配。此證實了該表面保護層適應該電路側面不規則性的能力。
根據本發明,該表面保護層顯示對半導體晶圓電路表面上之不規則性的充分適應性且顯示作為研磨期間之一支撐物的充分剛性,同時亦在重複的升高溫度後不被流化。因此,即使在背面研磨至約為50 μm之極低厚度時,亦不會發生諸如電路圖案背面轉移或晶圓損壞之問題。
在一實施例中,本發明之一表面保護薄片之表面保護層在室溫下為固體且可作為一薄片物件加以提供,且因為其在30-100℃下加熱後可轉化為流體液態黏著劑,所以可在加熱後將其層壓以充分適應電路側面不規則性。同樣地,因為該表面保護層在流體狀態下藉由表面張力而包圍該晶圓邊緣,所以該晶圓甚至在其邊緣處由該保護層加以支撐。此外,因為在研磨之前藉由曝露於紫外線將該保護層硬化為一高彈性模數材料,所以有可能達成優良的研磨特性(無電路側面不規則性之背面轉移或晶圓邊緣碎裂,且無研磨水之滲透),此類似於一種用於藉由(例如)層壓而將晶圓附著至一硬基板上的使用流體UV固化(或熱設定)黏著劑或蠟的系統。換言之,本發明之保護薄片達成了一薄片物
件之便利及其中晶圓藉由蠟或流體黏著劑而層壓至一支撐基板上的過程之優良研磨特性兩者。
在另一實施例中,該表面保護層在室溫下可作為流體而提供。此種形式允許直接塗覆至一不規則表面上繼而添加一聚合膜至該流體表面且隨後硬化以提供一可移除薄片物件。此實施例提供如上文所列舉之相同優勢。
1‧‧‧晶圓
2‧‧‧電路側面
3‧‧‧表面保護層
4‧‧‧聚合薄膜材料
5‧‧‧表面保護薄片
包括圖1a、圖1b、圖1c及圖1d的圖1為本發明之一實施例的半導體表面保護方法之第一流程圖。
包括圖2a、圖2b、圖2c及圖2d的圖2為本發明之另一實施例的半導體表面保護方法之第二流程圖。
1‧‧‧晶圓
3‧‧‧表面保護層
4‧‧‧聚合薄膜材料
Claims (7)
- 一種半導體表面保護方法,藉此在一半導體晶圓之背面研磨步驟期間保護該半導體晶圓之電路側面,包含:提供一流體表面保護層;在該半導體晶圓之該電路側面塗覆該流體表面保護層;在該流體表面保護層上置放一聚合薄膜材料;藉由曝露於輻射或加熱後以硬化該流體表面保護層;及研磨該半導體晶圓,其中在硬化該流體表面保護層後完成研磨該半導體晶圓。
- 如請求項1之半導體表面保護方法,藉此在一真空中執行該塗覆、置放及硬化步驟。
- 如請求項1之半導體表面保護方法,其中,在硬化該流體表面保護層之前,該流體表面保護層在室溫(20-25℃)下具有一小於其彈性剪力儲存模數(G')之彈性剪力損耗模數(G")且在30-100℃下具有一大於其彈性剪力儲存模數(G')之彈性剪力損耗模數(G"),其由一黏彈性量測裝置在一10 Hz之頻率、一0.04%之形變及一3℃/分鐘之溫度斜率下測得,且硬化後之該流體表面保護層在50℃下具有一大於5x107 Pa之彈性張力儲存模數(E'),其由一黏彈性量測裝置在一1 Hz之頻率、一0.04%之形變及一5℃/分鐘之溫度斜率下測得。
- 如請求項1之半導體表面保護方法,其中該流體表面保護層包含至少一類型的在分子中具有兩個或兩個以上烯系不飽和基團的自由基可聚合化合物,該自由基可聚合化合物選自由以下物組成之基團:(1)選自異氰脲酸衍生之(甲基)丙烯酸酯、異戊四醇衍生之(甲基)丙烯酸酯或雙酚A衍生之(甲基)丙烯酸酯的基於(甲基)丙烯酸的低分子量化合物,其在室溫(20-25℃)下為結晶態或蠟狀,(2)在室溫(20-25℃)下為固體的具有10,000或更大分子量之(甲基)丙烯酸胺基甲酸酯樹脂,及(3)在室溫(20-25℃)下為固體的具有一1000或更大分子量之以下樹脂:酚-酚醛環氧(甲基)丙烯酸樹脂、甲酚-酚醛環氧(甲基)丙烯酸樹脂及雙酚A環氧二(甲基)丙烯酸樹脂。
- 如請求項1之半導體表面保護方法,其中該流體表面保護層進一步包含一自由基聚合起始劑。
- 如請求項1之半導體表面保護方法,其中該流體表面保護層包含至少一在分子中具有兩個或兩個以上陽離子可聚合基團之陽離子可聚合化合物,該等陽離子可聚合化合物選自由以下物組成之基團:(1)選自對苯二酚二縮水甘油醚或對苯二甲酸二縮水甘油酯的基於環氧之低分子化合物,其在室溫(20-25℃)下為結晶態或蠟狀,及(2)在室溫下為固體的具有1000或更大分子量之酚-酚 醛環氧樹脂、甲酚-酚醛環氧樹脂及雙酚A環氧樹脂。
- 如請求項6之半導體表面保護方法,其中該流體表面保護層進一步包含一陽離子聚合起始劑。
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- 2004-10-15 DE DE602004014179T patent/DE602004014179D1/de active Active
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- 2004-10-15 CN CNA2004800334986A patent/CN1883044A/zh active Pending
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Also Published As
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TW200526756A (en) | 2005-08-16 |
DE602004014179D1 (de) | 2008-07-10 |
WO2005053017A1 (en) | 2005-06-09 |
JP2005150235A (ja) | 2005-06-09 |
KR20060106831A (ko) | 2006-10-12 |
EP1683195A1 (en) | 2006-07-26 |
EP1683195B1 (en) | 2008-05-28 |
MY143070A (en) | 2011-02-28 |
KR101118790B1 (ko) | 2012-03-20 |
ATE397287T1 (de) | 2008-06-15 |
CN102172858A (zh) | 2011-09-07 |
US20070148916A1 (en) | 2007-06-28 |
CN1883044A (zh) | 2006-12-20 |
US8349706B2 (en) | 2013-01-08 |
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