KR102581138B1 - 웨이퍼의 가공 방법 - Google Patents

웨이퍼의 가공 방법 Download PDF

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Publication number
KR102581138B1
KR102581138B1 KR1020180105772A KR20180105772A KR102581138B1 KR 102581138 B1 KR102581138 B1 KR 102581138B1 KR 1020180105772 A KR1020180105772 A KR 1020180105772A KR 20180105772 A KR20180105772 A KR 20180105772A KR 102581138 B1 KR102581138 B1 KR 102581138B1
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KR
South Korea
Prior art keywords
wafer
sealing material
cutting groove
modified layer
alignment
Prior art date
Application number
KR1020180105772A
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English (en)
Korean (ko)
Other versions
KR20190028317A (ko
Inventor
가츠히코 스즈키
유리 반
Original Assignee
가부시기가이샤 디스코
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Application filed by 가부시기가이샤 디스코 filed Critical 가부시기가이샤 디스코
Publication of KR20190028317A publication Critical patent/KR20190028317A/ko
Application granted granted Critical
Publication of KR102581138B1 publication Critical patent/KR102581138B1/ko

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    • 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
    • H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
    • H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
    • 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
    • H01L21/67092—Apparatus for mechanical treatment
    • 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
    • B23K26/38—Removing material by boring or cutting
    • 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
    • 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
    • H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
    • H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
    • H01L21/561—Batch processing
    • 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
    • H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
    • H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
    • H01L21/565—Moulds
    • 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
    • H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/76—Making of isolation regions between components
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L22/00—Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor
    • H01L22/10—Measuring as part of the manufacturing process
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
    • H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
    • H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
    • H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
    • H01L23/3114—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed the device being a chip scale package, e.g. CSP
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/544—Marks applied to semiconductor devices or parts, e.g. registration marks, alignment structures, wafer maps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
    • B28D5/02—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by rotary tools, e.g. drills
    • B28D5/022—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by rotary tools, e.g. drills by cutting with discs or wheels
    • 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
    • H01L21/683—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 for supporting or gripping
    • H01L21/6835—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 for supporting or gripping using temporarily an auxiliary support
    • H01L21/6836—Wafer tapes, e.g. grinding or dicing support tapes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
    • H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
    • H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
    • H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
    • H01L2221/68327—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support used during dicing or grinding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
    • H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
    • H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
    • H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
    • H01L2221/6834—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support used to protect an active side of a device or wafer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2223/00—Details relating to semiconductor or other solid state devices covered by the group H01L23/00
    • H01L2223/544—Marks applied to semiconductor devices or parts
    • H01L2223/54426—Marks applied to semiconductor devices or parts for alignment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2223/00—Details relating to semiconductor or other solid state devices covered by the group H01L23/00
    • H01L2223/544—Marks applied to semiconductor devices or parts
    • H01L2223/54453—Marks applied to semiconductor devices or parts for use prior to dicing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • 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
    • H01L2224/11—Manufacturing methods
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
    • H01L2924/181—Encapsulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dicing (AREA)
  • Laser Beam Processing (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
KR1020180105772A 2017-09-08 2018-09-05 웨이퍼의 가공 방법 KR102581138B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JPJP-P-2017-172839 2017-09-08
JP2017172839A JP6918418B2 (ja) 2017-09-08 2017-09-08 ウェーハの加工方法

Publications (2)

Publication Number Publication Date
KR20190028317A KR20190028317A (ko) 2019-03-18
KR102581138B1 true KR102581138B1 (ko) 2023-09-20

Family

ID=65441994

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020180105772A KR102581138B1 (ko) 2017-09-08 2018-09-05 웨이퍼의 가공 방법

Country Status (6)

Country Link
JP (1) JP6918418B2 (de)
KR (1) KR102581138B1 (de)
CN (1) CN109473351A (de)
DE (1) DE102018215247A1 (de)
SG (1) SG10201807747VA (de)
TW (1) TWI789422B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7368098B2 (ja) * 2019-04-17 2023-10-24 株式会社ディスコ ウエーハの加工方法
CN110744731B (zh) * 2019-10-30 2021-07-27 许昌学院 一种基于光电控制的晶片切片设备
US11908831B2 (en) 2020-10-21 2024-02-20 Stmicroelectronics Pte Ltd Method for manufacturing a wafer level chip scale package (WLCSP)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004200258A (ja) 2002-12-17 2004-07-15 Shinko Electric Ind Co Ltd バンプ検査装置および検査方法
JP2005538572A (ja) * 2002-09-11 2005-12-15 フリースケール セミコンダクター インコーポレイテッド ウエハ被覆およびダイ分離するための切断方法
JP2007190596A (ja) * 2006-01-20 2007-08-02 Seiko Epson Corp 基体の製造方法、フレキシブル回路基板、電気光学装置、電子機器
JP2011216789A (ja) 2010-04-01 2011-10-27 Nikon Corp 位置検出装置、重ね合わせ装置、位置検出方法およびデバイスの製造方法
JP2014003274A (ja) * 2012-05-25 2014-01-09 Nitto Denko Corp 半導体装置の製造方法及びアンダーフィル材
JP2017022280A (ja) * 2015-07-13 2017-01-26 株式会社ディスコ ウエーハの加工方法
JP2017028160A (ja) * 2015-07-24 2017-02-02 株式会社ディスコ ウエーハの加工方法
JP2017054888A (ja) * 2015-09-08 2017-03-16 株式会社ディスコ ウエーハの加工方法
JP2017117990A (ja) * 2015-12-25 2017-06-29 株式会社ディスコ ウエーハの加工方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0756877B2 (ja) * 1990-01-24 1995-06-14 三菱電機株式会社 半導体装置のリード平坦性測定装置
JP2009158763A (ja) * 2007-12-27 2009-07-16 Disco Abrasive Syst Ltd 保護膜被覆装置
JP2010024064A (ja) * 2008-07-15 2010-02-04 Seiko Epson Corp 構造体の製造方法、液滴吐出ヘッド
JP5474630B2 (ja) * 2010-03-30 2014-04-16 トッパン・フォームズ株式会社 電子部品およびその製造方法、部品実装基板
JP5948034B2 (ja) 2011-09-27 2016-07-06 株式会社ディスコ アライメント方法
US9085685B2 (en) * 2011-11-28 2015-07-21 Nitto Denko Corporation Under-fill material and method for producing semiconductor device
JP6157890B2 (ja) * 2013-03-26 2017-07-05 日東電工株式会社 アンダーフィル材、封止シート及び半導体装置の製造方法
CN105102179B (zh) * 2013-03-27 2017-04-26 浜松光子学株式会社 激光加工装置及激光加工方法
JP2016015438A (ja) 2014-07-03 2016-01-28 株式会社ディスコ アライメント方法
JP2016166120A (ja) * 2015-03-06 2016-09-15 三星ダイヤモンド工業株式会社 積層基板の加工方法及びレーザ光による積層基板の加工装置
JP2017022162A (ja) * 2015-07-07 2017-01-26 株式会社ディスコ ウエーハの加工方法
JP6512298B2 (ja) * 2015-08-11 2019-05-15 株式会社村田製作所 高周波モジュールおよびその製造方法
JP6506137B2 (ja) * 2015-08-17 2019-04-24 株式会社ディスコ 貼り合せ基板の加工方法
JP2017107984A (ja) * 2015-12-09 2017-06-15 株式会社ディスコ ウエーハの加工方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005538572A (ja) * 2002-09-11 2005-12-15 フリースケール セミコンダクター インコーポレイテッド ウエハ被覆およびダイ分離するための切断方法
JP2004200258A (ja) 2002-12-17 2004-07-15 Shinko Electric Ind Co Ltd バンプ検査装置および検査方法
JP2007190596A (ja) * 2006-01-20 2007-08-02 Seiko Epson Corp 基体の製造方法、フレキシブル回路基板、電気光学装置、電子機器
JP2011216789A (ja) 2010-04-01 2011-10-27 Nikon Corp 位置検出装置、重ね合わせ装置、位置検出方法およびデバイスの製造方法
JP2014003274A (ja) * 2012-05-25 2014-01-09 Nitto Denko Corp 半導体装置の製造方法及びアンダーフィル材
JP2017022280A (ja) * 2015-07-13 2017-01-26 株式会社ディスコ ウエーハの加工方法
JP2017028160A (ja) * 2015-07-24 2017-02-02 株式会社ディスコ ウエーハの加工方法
JP2017054888A (ja) * 2015-09-08 2017-03-16 株式会社ディスコ ウエーハの加工方法
JP2017117990A (ja) * 2015-12-25 2017-06-29 株式会社ディスコ ウエーハの加工方法

Also Published As

Publication number Publication date
JP2019050252A (ja) 2019-03-28
KR20190028317A (ko) 2019-03-18
TW201913783A (zh) 2019-04-01
JP6918418B2 (ja) 2021-08-11
SG10201807747VA (en) 2019-04-29
CN109473351A (zh) 2019-03-15
DE102018215247A1 (de) 2019-03-14
TWI789422B (zh) 2023-01-11

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