JP7189026B2 - 被加工物の加工方法 - Google Patents
被加工物の加工方法 Download PDFInfo
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- JP7189026B2 JP7189026B2 JP2019000690A JP2019000690A JP7189026B2 JP 7189026 B2 JP7189026 B2 JP 7189026B2 JP 2019000690 A JP2019000690 A JP 2019000690A JP 2019000690 A JP2019000690 A JP 2019000690A JP 7189026 B2 JP7189026 B2 JP 7189026B2
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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
- B23K26/38—Removing material by boring or cutting
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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
- B23K26/0006—Working by laser beam, e.g. welding, cutting or boring 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
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
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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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
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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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/066—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks
- B23K26/0661—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks disposed on the workpiece
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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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/0665—Shaping the laser beam, e.g. by masks or multi-focusing by beam condensation on the workpiece, e.g. for focusing
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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
-
- 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
-
- 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
- B23K26/60—Preliminary 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
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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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
- H01L21/67—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
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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
- H01L21/70—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
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/40—Semiconductor devices
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
- B23K2103/54—Glass
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
- B23K2103/56—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26 semiconducting
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- 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
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- Engineering & Computer Science (AREA)
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- Optics & Photonics (AREA)
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- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical & Material Sciences (AREA)
- Dicing (AREA)
- Laser Beam Processing (AREA)
- Turning (AREA)
Description
本発明の実施形態1に係る被加工物の加工方法を図面に基づいて説明する。図1は、実施形態1に係る被加工物の加工方法の加工対象の被加工物の一例を示す斜視図である。図2は、実施形態1に係る被加工物の加工方法の加工対象の被加工物の一例を示す断面図である。
保持ステップST1は、被加工物100の表面102側を後述するチャックテーブル10(図4参照)で保持するステップである。
図4は、図3に示された被加工物の加工方法の高さ位置検出ステップを示す断面図である。図5は、図4の要部を拡大した拡大図である。図5は、図4の領域Vを拡大した拡大図である。高さ位置検出ステップST2は、図4及び図5に示すように、保持ステップST1の後、チャックテーブル10と高さ位置検出ユニット21とを相対的に移動させながら被加工物100に測定用レーザービーム22を照射し、被加工物100の裏面106からの反射光を用いて被加工物100の高さ位置を検出するステップである。高さ位置検出ステップST2では、ストリート103内の柱状導体電極107が埋設された領域を避けて測定用レーザービーム22を照射する。
図6は、図3に示された被加工物の加工方法の改質層形成ステップを示す断面図である。図7は、図6の要部を拡大した拡大図である。図7は、図6の領域VIIを拡大した拡大図である。改質層形成ステップST3は、図6及び図7に示すように、高さ位置検出ステップST2で検出した高さに基づいて被加工物100の内部に被加工物100に対して透過性を有する波長の加工用レーザービーム32の集光点130を位置付け、チャックテーブル10とレーザービーム照射ユニット31とを相対的に移動させながら分割予定ライン105に沿って加工用レーザービーム32を照射して被加工物100に改質層140(図8参照)を形成するステップである。
図8は、図3に示された被加工物の加工方法の研削ステップを示す断面図である。研削ステップST4は、図8に示すように、被加工物100の裏面106を研削することで、被加工物100の裏面106側の改質層140が形成されていない部分を除去するステップである。なお、本実施形態では、SDBG(Stealth Dicing Before Grinding)プロセスを採用しているので、研削ステップST4は、改質層形成ステップST3で改質層140を形成した後、分割ステップST5で被加工物100を分割する前に、実行している。
図9は、図3に示された被加工物の加工方法の分割ステップの分割前の状態を示す断面図である。図10は、図3に示された被加工物の加工方法の分割ステップの分割後の状態を示す断面図である。分割ステップST5は、図9及び図10に示すように、改質層形成ステップST3で形成された改質層140に外力を付与して被加工物100を分割するステップである。
本発明の実施形態2に係る被加工物の加工方法を図面に基づいて説明する。実施形態2の説明では、実施形態1と同一部分に同一符号を付して説明を省略する。
21 高さ位置検出ユニット
22 測定用レーザービーム
31 レーザービーム照射ユニット
32 加工用レーザービーム
100 被加工物
103 ストリート
104 デバイス
105 分割予定ライン
107 柱状導体電極
110 保護部材
120 位置検出ライン
121 シフト距離
130 集光点
140 改質層
150 エキスパンドシート
Claims (2)
- 表面に設定された複数のストリートによって区画された領域にデバイスを有し、基板の表面側から裏面側まで貫通して形成された柱状導体電極を該ストリート内に備える被加工物を分割予定ラインに沿って分割する被加工物の加工方法であって、
該被加工物の表面側をチャックテーブルで保持する保持ステップと、
該保持ステップの後、該チャックテーブルと高さ位置検出ユニットとを相対的に移動させながら該被加工物に測定用レーザービームを照射し、該被加工物の裏面からの反射光を用いて被加工物の高さ位置を検出する高さ位置検出ステップと、
該高さ位置検出ステップで検出した高さに基づいて該被加工物の内部に該被加工物に対して透過性を有する波長の加工用レーザービームの集光点を位置付け、該チャックテーブルとレーザービーム照射ユニットとを相対的に移動させながら該分割予定ラインに沿って該加工用レーザービームを照射して該被加工物に改質層を形成する改質層形成ステップと、
該改質層形成ステップで形成された改質層に外力を付与して該被加工物を分割する分割ステップと、を備え、
該高さ位置検出ステップでは、該ストリート内の柱状導体電極が埋設された領域を避けて測定用レーザービームを照射することを特徴とする被加工物の加工方法。 - 該被加工物の裏面側にテープを貼着するテープ貼着ステップを更に含み、
該テープを介して該被加工物に対して透過性を有する波長の加工用レーザービームを照射し該被加工物の内部に改質層を形成することを特徴とする請求項1に記載の被加工物の加工方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019000690A JP7189026B2 (ja) | 2019-01-07 | 2019-01-07 | 被加工物の加工方法 |
KR1020190171739A KR20200085646A (ko) | 2019-01-07 | 2019-12-20 | 피가공물의 가공 방법 |
TW108148660A TWI824094B (zh) | 2019-01-07 | 2019-12-31 | 被加工物的加工方法 |
CN202010000882.7A CN111482709B (zh) | 2019-01-07 | 2020-01-02 | 被加工物的加工方法 |
US16/733,607 US11433487B2 (en) | 2019-01-07 | 2020-01-03 | Method of processing workpiece |
SG10202000091WA SG10202000091WA (en) | 2019-01-07 | 2020-01-06 | Method of processing workpiece |
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JP2019000690A JP7189026B2 (ja) | 2019-01-07 | 2019-01-07 | 被加工物の加工方法 |
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JP2020109805A JP2020109805A (ja) | 2020-07-16 |
JP7189026B2 true JP7189026B2 (ja) | 2022-12-13 |
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US (1) | US11433487B2 (ja) |
JP (1) | JP7189026B2 (ja) |
KR (1) | KR20200085646A (ja) |
CN (1) | CN111482709B (ja) |
SG (1) | SG10202000091WA (ja) |
TW (1) | TWI824094B (ja) |
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JP7460386B2 (ja) * | 2020-02-14 | 2024-04-02 | 株式会社ディスコ | 被加工物の加工方法 |
US11378531B1 (en) * | 2021-02-01 | 2022-07-05 | Applied Materials Israel Ltd. | Method for focusing an electron beam on a wafer having a transparent substrate |
Citations (3)
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JP2003188263A (ja) | 2001-12-17 | 2003-07-04 | Sharp Corp | 半導体集積回路チップの製造方法とその半導体集積回路チップを用いた半導体パッケージ |
JP2014053358A (ja) | 2012-09-05 | 2014-03-20 | Disco Abrasive Syst Ltd | ウエーハの加工方法 |
JP2018183794A (ja) | 2017-04-25 | 2018-11-22 | 株式会社ディスコ | レーザー加工装置の高さ位置検出ユニットの評価用治具及びレーザー加工装置の高さ位置検出ユニットの評価方法 |
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JP4153325B2 (ja) * | 2003-02-13 | 2008-09-24 | 株式会社ディスコ | 半導体ウエーハの加工方法 |
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US8809120B2 (en) * | 2011-02-17 | 2014-08-19 | Infineon Technologies Ag | Method of dicing a wafer |
JP6148075B2 (ja) * | 2013-05-31 | 2017-06-14 | 株式会社ディスコ | レーザー加工装置 |
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JP6395633B2 (ja) * | 2015-02-09 | 2018-09-26 | 株式会社ディスコ | ウエーハの生成方法 |
JP6532273B2 (ja) * | 2015-04-21 | 2019-06-19 | 株式会社ディスコ | ウェーハの加工方法 |
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JP2003188263A (ja) | 2001-12-17 | 2003-07-04 | Sharp Corp | 半導体集積回路チップの製造方法とその半導体集積回路チップを用いた半導体パッケージ |
JP2014053358A (ja) | 2012-09-05 | 2014-03-20 | Disco Abrasive Syst Ltd | ウエーハの加工方法 |
JP2018183794A (ja) | 2017-04-25 | 2018-11-22 | 株式会社ディスコ | レーザー加工装置の高さ位置検出ユニットの評価用治具及びレーザー加工装置の高さ位置検出ユニットの評価方法 |
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CN111482709A (zh) | 2020-08-04 |
KR20200085646A (ko) | 2020-07-15 |
SG10202000091WA (en) | 2020-08-28 |
JP2020109805A (ja) | 2020-07-16 |
US11433487B2 (en) | 2022-09-06 |
CN111482709B (zh) | 2022-11-08 |
TW202027151A (zh) | 2020-07-16 |
TWI824094B (zh) | 2023-12-01 |
US20200215649A1 (en) | 2020-07-09 |
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