JP6918419B2 - ウェーハの加工方法 - Google Patents
ウェーハの加工方法 Download PDFInfo
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- JP6918419B2 JP6918419B2 JP2017173189A JP2017173189A JP6918419B2 JP 6918419 B2 JP6918419 B2 JP 6918419B2 JP 2017173189 A JP2017173189 A JP 2017173189A JP 2017173189 A JP2017173189 A JP 2017173189A JP 6918419 B2 JP6918419 B2 JP 6918419B2
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- 238000003672 processing method Methods 0.000 title description 4
- 239000003566 sealing material Substances 0.000 claims description 53
- 238000000034 method Methods 0.000 claims description 24
- 239000008393 encapsulating agent Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- 238000003331 infrared imaging Methods 0.000 claims description 11
- 238000003384 imaging method Methods 0.000 claims description 7
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 claims description 4
- 230000001678 irradiating effect Effects 0.000 claims 1
- 239000006229 carbon black Substances 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002507 cathodic stripping potentiometry Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- 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
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- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67092—Apparatus for mechanical treatment
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- 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
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/02—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
- B24B49/04—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
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- 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
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- 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
- B28D5/0005—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing
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- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/0005—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing
- B28D5/0017—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing using moving tools
- B28D5/0029—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing using moving tools rotating
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- 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
- B28D5/0005—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing
- B28D5/0052—Means for supporting or holding work during breaking
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- B28—WORKING CEMENT, CLAY, OR STONE
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- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
- B28D5/0058—Accessories specially adapted for use with machines for fine working of gems, jewels, crystals, e.g. of semiconductor material
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
- B28D7/04—Accessories specially adapted for use with machines or devices of the preceding groups for supporting or holding work or conveying or discharging work
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- 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
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- H01L22/10—Measuring as part of the manufacturing process
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Dicing (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Laser Beam Processing (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Description
(1)半導体ウェーハ(以下、ウェーハと略称することがある)の表面にデバイス(回路)及びバンプと呼ばれる外部接続端子を形成する。
(2)ウェーハの表面側から分割予定ラインに沿ってウェーハを切削し、デバイスチップの仕上がり厚さに相当する深さの切削溝を形成する。
(3)ウェーハの表面をカーボンブラック入りの封止材で封止する。
(4)ウェーハの裏面側をデバイスチップの仕上がり厚さまで研削して切削溝中の封止材を露出させる。
(5)ウェーハの表面はカーボンブラック入りの封止材で封止されているため、ウェーハ表面の外周部分の封止材を除去してターゲットパターン等のアライメントマークを露出させ、このアライメントマークに基づいて切削すべき分割予定ラインを検出するアライメントを実施する。
(6)アライメントに基づいて、ウェーハの表面側から分割予定ラインに沿ってウェーハを切削して、表面及び全側面が封止材で封止された5Sモールドパッケージに分割する。
11 半導体ウェーハ
13 分割予定ライン
14 切削ブレード
15 デバイス
16 アライメントユニット
17 電極バンプ
18,18A 撮像ユニット
20 封止材
23 切削溝
25 改質層
26 研削ユニット
27 デバイスチップ
34 研削ホイール
38 研削砥石
46 レーザーヘッド(集光器)
50 分割装置
Claims (2)
- 交差して形成された複数の分割予定ラインによって区画された表面の各領域にそれぞれ複数のバンプを有するデバイスが形成されたウェーハの加工方法であって、
該ウェーハの表面側から該分割予定ラインに沿って切削ブレードによってデバイスチップの仕上がり厚さに相当する深さの切削溝を形成する切削溝形成工程と、
該切削溝形成工程を実施した後、該切削溝を含む該ウェーハの表面を封止材で封止する封止工程と、
該封止工程を実施した後、該ウェーハの表面側から赤外線撮像手段によって該封止材を透過してウェーハの表面側を撮像してアライメントマークを検出し、該アライメントマークに基づいてレーザー加工すべき該分割予定ラインを検出するアライメント工程と、
該アライメント工程を実施した後、該封止材に対して透過性を有する波長のレーザービームの集光点を該切削溝中の該封止材の内部に位置付けて、該ウェーハの表面側から該分割予定ラインに沿ってレーザービームを照射して、該切削溝中の該封止材の内部に改質層を形成する改質層形成工程と、
該改質層形成工程を実施した後、該ウェーハの裏面側から該デバイスチップの仕上がり厚さまで該ウェーハを研削して該切削溝中の該封止材を露出させる研削工程と、
該研削工程を実施した後、該切削溝中の該封止材に外力を付与して該改質層を分割起点として該封止材によって表面及び4側面が囲繞された個々のデバイスチップに分割する分割工程と、を備え、
該封止工程では、該赤外線撮像手段が受光する赤外線が透過するような透過性を有する封止材によって該ウェーハの表面が封止されることを特徴とするウェーハの加工方法。 - 前記アライメント工程で用いる前記赤外線撮像手段はInGaAs撮像素子を含む請求項1記載のウェーハの加工方法。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017173189A JP6918419B2 (ja) | 2017-09-08 | 2017-09-08 | ウェーハの加工方法 |
KR1020180105977A KR102631706B1 (ko) | 2017-09-08 | 2018-09-05 | 웨이퍼의 가공 방법 |
CN201811035735.2A CN109473360B (zh) | 2017-09-08 | 2018-09-06 | 晶片的加工方法 |
SG10201807752RA SG10201807752RA (en) | 2017-09-08 | 2018-09-07 | Wafer processing method |
DE102018215250.0A DE102018215250A1 (de) | 2017-09-08 | 2018-09-07 | Bearbeitungsverfahren für einen Wafer |
TW107131447A TWI773822B (zh) | 2017-09-08 | 2018-09-07 | 晶圓之加工方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017173189A JP6918419B2 (ja) | 2017-09-08 | 2017-09-08 | ウェーハの加工方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019050262A JP2019050262A (ja) | 2019-03-28 |
JP6918419B2 true JP6918419B2 (ja) | 2021-08-11 |
Family
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DE102018215250A1 (de) | 2019-03-14 |
KR20190028323A (ko) | 2019-03-18 |
TWI773822B (zh) | 2022-08-11 |
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CN109473360B (zh) | 2023-07-14 |
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