KR20050084878A - 반도체 기판의 절단 방법 - Google Patents
반도체 기판의 절단 방법 Download PDFInfo
- Publication number
- KR20050084878A KR20050084878A KR1020057007273A KR20057007273A KR20050084878A KR 20050084878 A KR20050084878 A KR 20050084878A KR 1020057007273 A KR1020057007273 A KR 1020057007273A KR 20057007273 A KR20057007273 A KR 20057007273A KR 20050084878 A KR20050084878 A KR 20050084878A
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- South Korea
- Prior art keywords
- semiconductor substrate
- cutting
- cut
- region
- forming
- Prior art date
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 322
- 238000005520 cutting process Methods 0.000 title claims abstract description 249
- 239000000758 substrate Substances 0.000 title claims description 283
- 238000000034 method Methods 0.000 title claims description 84
- 239000011347 resin Substances 0.000 claims abstract description 113
- 229920005989 resin Polymers 0.000 claims abstract description 113
- 238000010521 absorption reaction Methods 0.000 claims abstract description 30
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 230000001678 irradiating effect Effects 0.000 claims description 17
- 238000000227 grinding Methods 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 148
- 229910052710 silicon Inorganic materials 0.000 abstract description 147
- 239000010703 silicon Substances 0.000 abstract description 147
- 239000000853 adhesive Substances 0.000 abstract description 42
- 230000001070 adhesive effect Effects 0.000 abstract description 40
- 239000000463 material Substances 0.000 abstract description 11
- 238000012545 processing Methods 0.000 description 36
- 238000003384 imaging method Methods 0.000 description 19
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 12
- 230000001681 protective effect Effects 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 10
- 230000035882 stress Effects 0.000 description 10
- 239000013078 crystal Substances 0.000 description 9
- 238000003672 processing method Methods 0.000 description 8
- 238000010128 melt processing Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000002834 transmittance Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000003486 chemical etching Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 101100008049 Caenorhabditis elegans cut-5 gene Proteins 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/083—Devices involving movement of the workpiece in at least one axial direction
- B23K26/0853—Devices involving movement of the workpiece in at least in two axial directions, e.g. in a plane
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- 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
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- 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
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/2633—Bombardment with radiation with high-energy radiation for etching, e.g. sputteretching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/50—Working by transmitting the laser beam through or within the workpiece
- B23K26/53—Working by transmitting the laser beam through or within the workpiece for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
- B28D1/221—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising by thermic methods
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
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- B23K2101/40—Semiconductor devices
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Abstract
Description
Claims (18)
- 다이본드 수지층을 개재시켜 시트가 붙여진 반도체 기판의 내부에 집광점을 맞추어 레이저광을 조사함으로써 상기 반도체 기판의 내부에 다광자 흡수에 의한 개질 영역을 형성하고, 상기 개질 영역을 가지고 절단 예정부를 형성하는 공정; 및상기 절단 예정부를 형성하는 공정 후, 상기 시트를 확장시킴으로써 상기 절단 예정부를 따라 상기 반도체 기판 및 상기 다이본드 수지층을 절단하는 공정을 포함하는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 다이본드 수지층을 개재시켜 시트가 붙여진 반도체 기판의 내부에 집광점을 맞추고, 집광점에 있어서의 피크 파워 밀도가 1×108(W/㎠) 이상이고 펄스폭이 1㎲ 이하인 조건에서 레이저광을 조사함으로써 상기 반도체 기판의 내부에 용융 처리 영역을 포함한 개질 영역을 형성하고, 상기 용융 처리 영역을 포함한 개질 영역을 가지고 절단 예정부를 형성하는 공정; 및상기 절단 예정부를 형성하는 공정 후, 상기 시트를 확장시킴으로써 상기 절단 예정부를 따라 상기 반도체 기판 및 상기 다이본드 수지층을 절단하는 공정을 포함하는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 다이본드 수지층을 개재시켜 시트가 붙여진 반도체 기판의 내부에 집광점을 맞추어 레이저광을 조사함으로써 상기 반도체 기판의 내부에 개질 영역을 형성하고, 상기 개질 영역을 가지고 절단 예정부를 형성하는 공정; 및상기 절단 예정부를 형성하는 공정 후, 상기 시트를 확장시킴으로써 상기 절단 예정부를 따라 상기 반도체 기판 및 상기 다이본드 수지층을 절단하는 공정을 포함하는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 시트가 붙여진 반도체 기판의 내부에 집광점을 맞추어 레이저광을 조사함으로써 상기 반도체 기판의 내부에 개질 영역을 형성하고, 상기 개질 영역을 가지고 절단 예정부를 형성하는 공정; 및상기 절단 예정부를 형성하는 공정 후, 상기 시트를 확장시킴으로써 상기 절단 예정부를 따라 상기 반도체 기판을 절단하는 공정을 포함하는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 제 3 항 또는 제 4 항에 있어서,상기 개질 영역은 용융 처리한 영역인 것을 특징으로 하는 반도체 기판의 절단 방법.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,상기 절단 예정부를 형성하는 공정에서는, 상기 절단 예정부를 기점으로 하여, 상기 반도체 기판의 레이저광 입사측의 표면에 균열을 도달시키는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,상기 절단 예정부를 형성하는 공정에서는, 상기 절단 예정부를 기점으로 하여, 상기 반도체 기판의 레이저광 입사측과 반대측의 이면에 균열을 도달시키는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,상기 절단 예정부를 형성하는 공정에서는, 상기 절단 예정부를 기점으로 하여, 상기 반도체 기판의 레이저광 입사측의 표면과 그 반대측의 이면에 균열을 도달시키는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 다이본드 수지층을 개재시켜 시트가 붙여진 반도체 기판의 내부에 집광점을 맞추어 레이저광을 조사함으로써 상기 반도체 기판의 내부에 다광자 흡수에 의한 개질 영역을 형성하고, 상기 개질 영역을 가지고 절단 예정부를 형성하는 공정;상기 절단 예정부를 형성하는 공정 후, 상기 절단 예정부를 따라 상기 반도체 기판에 스트레스를 일으키게 함으로써, 상기 절단 예정부를 따라 상기 반도체 기판을 절단하는 공정; 및상기 반도체 기판을 절단하는 공정 후, 상기 시트를 확장시킴으로써 상기 반도체 기판의 절단면을 따라 상기 다이본드 수지층을 절단하는 공정을 포함하는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 다이본드 수지층을 개재시켜 시트가 붙여진 반도체 기판의 내부에 집광점을 맞추고, 집광점에 있어서의 피크 파워 밀도가 1×108(W/㎠) 이상이고 펄스폭이 1㎲ 이하인 조건에서 레이저광을 조사함으로써 상기 반도체 기판의 내부에 용융 처리 영역을 포함한 개질 영역을 형성하고, 상기 용융 처리 영역을 포함한 개질 영역을 가지고 절단 예정부를 형성하는 공정;상기 절단 예정부를 형성하는 공정 후, 상기 절단 예정부를 따라 상기 반도체 기판에 스트레스를 일으키게 함으로써, 상기 절단 예정부를 따라 상기 반도체 기판을 절단하는 공정; 및상기 반도체 기판을 절단하는 공정 후, 상기 시트를 확장시킴으로써 상기 반도체 기판의 절단면을 따라 상기 다이본드 수지층을 절단하는 공정을 포함하는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 다이본드 수지층을 개재시켜 시트가 붙여진 반도체 기판의 내부에 집광점을 맞추어 레이저광을 조사함으로써, 상기 반도체 기판의 내부에 개질 영역을 형성하고, 상기 개질 영역을 가지고 절단 예정부를 형성하는 공정;상기 절단 예정부를 형성하는 공정 후, 상기 절단 예정부를 따라 상기 반도체 기판에 스트레스를 일으키게 함으로써 상기 절단 예정부를 따라 상기 반도체 기판을 절단하는 공정; 및상기 반도체 기판을 절단하는 공정 후, 상기 시트를 확장시킴으로써 상기 반도체 기판의 절단면을 따라 상기 다이본드 수지층을 절단하는 공정을 포함하는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 제 11 항에 있어서,상기 개질 영역은 용융 처리한 영역인 것을 특징으로 하는 반도체 기판의 절단 방법.
- 표면에 기능 소자가 형성된 반도체 기판을 절단 예정 라인에 따라서 절단하는 반도체 기판의 절단 방법에 있어서,상기 반도체 기판의 이면을 레이저광 입사면으로 하여 상기 반도체 기판의 내부에 집광점을 맞추어 레이저광을 조사함으로써 개질 영역을 형성하고, 상기 개질 영역에 의해서, 상기 절단 예정 라인을 따라 상기 레이저광 입사면으로부터 소정 거리 안쪽에 절단 기점 영역을 형성하는 공정;상기 절단 기점 영역을 형성한 후에, 상기 반도체 기판의 이면에 다이본드 수지층을 개재시켜 확장 가능한 보관 유지 부재를 부착하는 공정; 및상기 보관 유지 부재를 부착한 후에, 상기 보관 유지 부재를 확장시킴으로써 상기 반도체 기판 및 상기 다이본드 수지층을 상기 절단 예정 라인에 따라서 절단하는 공정을 포함하는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 제 13 항에 있어서,상기 절단 기점 영역을 형성하기 전에, 상기 반도체 기판이 소정 두께로 되도록 상기 반도체 기판의 이면을 연마하는 공정을 포함하는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 제 13 또는 제 14 항에 있어서,상기 개질 영역은 용융 처리 영역을 포함하는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 제 13 항 내지 제 15 항 중 어느 한 항에 있어서,상기 절단 기점 영역을 형성할 때, 상기 절단 기점 영역을 기점으로 하여 상기 반도체 기판의 표면에 균열을 도달시키는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 제 13 항 내지 제 15 항 중 어느 한 항에 있어서,상기 절단 기점 영역을 형성할 때, 상기 절단 기점 영역을 기점으로 하여 상기 반도체 기판의 이면에 균열을 도달시키는 것을 특징으로 하는 반도체 기판의 절단 방법.
- 제 13 항 내지 제 15 항 중 어느 한 항에 있어서,상기 절단 기점 영역을 형성할 때, 상기 절단 기점 영역을 기점으로 하여 상기 반도체 기판의 표면과 이면에 균열을 도달시키는 것을 특징으로 하는 반도체 기판의 절단 방법.
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