JP2020064956A - 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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- JP2020064956A JP2020064956A JP2018195607A JP2018195607A JP2020064956A JP 2020064956 A JP2020064956 A JP 2020064956A JP 2018195607 A JP2018195607 A JP 2018195607A JP 2018195607 A JP2018195607 A JP 2018195607A JP 2020064956 A JP2020064956 A JP 2020064956A
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- Prior art keywords
- wafer
- polyolefin
- sheet
- frame
- dividing
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- 238000003672 processing method Methods 0.000 title claims abstract description 14
- 229920000098 polyolefin Polymers 0.000 claims abstract description 129
- 230000001678 irradiating effect Effects 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 30
- 230000010354 integration Effects 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 19
- -1 polyethylene Polymers 0.000 claims description 14
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 239000004793 Polystyrene Substances 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 229920002223 polystyrene Polymers 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 6
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 4
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 21
- 239000003292 glue Substances 0.000 description 19
- 239000002390 adhesive tape Substances 0.000 description 18
- 239000002585 base Substances 0.000 description 17
- 238000002679 ablation Methods 0.000 description 13
- 238000004140 cleaning Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- 230000006866 deterioration Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 3
- 229910002601 GaN Inorganic materials 0.000 description 3
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000005355 lead glass Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005606 polypropylene copolymer Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- 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
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- 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
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
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- Engineering & Computer Science (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- High Energy & Nuclear Physics (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Dicing (AREA)
- Laser Beam Processing (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Abstract
Description
波長 :355nm
繰り返し周波数:50kHz
平均出力 :5W
送り速度 :200mm/秒
1a 表面
1b 裏面
3 分割予定ライン
3a 分割溝
5 デバイス
7 フレーム
7a 開口
9 ポリオレフィン系シート
9a 切断痕
11 フレームユニット
2 チャックテーブル
2a 保持面
2b,36a 吸引源
2c,36b 切り替え部
4 ヒートガン
4a 熱風
6 ヒートローラー
8 赤外線ランプ
8a 赤外線
10 カッター
12 レーザー加工装置
14 レーザー加工ユニット
14a 加工ヘッド
16 レーザービーム
18 ピックアップ装置
20 ドラム
22 フレーム保持ユニット
24 クランプ
26 フレーム支持台
28 ロッド
30 エアシリンダ
32 ベース
34 突き上げ機構
36 コレット
Claims (7)
- 複数のデバイスが、分割予定ラインによって区画された表面の各領域に形成されたウェーハを個々のデバイスチップに分割するウェーハの加工方法であって、
ウェーハを収容する開口を有するフレームの該開口内にウェーハを位置付け、該ウェーハの裏面と該フレームの外周とにポリオレフィン系シートを配設するポリオレフィン系シート配設工程と、
該ポリオレフィン系シートを加熱し熱圧着により該ウェーハと該フレームとを該ポリオレフィン系シートを介して一体化する一体化工程と、
該ウェーハに対して吸収性を有する波長のレーザービームを該分割予定ラインに沿って該ウェーハに照射し、分割溝を形成して該ウェーハを個々のデバイスチップに分割する分割工程と、
該ポリオレフィン系シートから個々の該デバイスチップをピックアップするピックアップ工程と、
を備えることを特徴とするウェーハの加工方法。 - 該一体化工程において、赤外線の照射によって該熱圧着を実施することを特徴とする請求項1記載のウェーハの加工方法。
- 該一体化工程において、一体化を実施した後、該フレームの外周からはみ出したポリオレフィン系シートを除去することを特徴とする請求項1記載のウェーハの加工方法。
- 該ピックアップ工程では、該ポリオレフィン系シートを拡張して各デバイスチップ間の間隔を広げ、該ポリオレフィン系シート側から該デバイスチップを突き上げることを特徴とする請求項1記載のウェーハの加工方法。
- 該ポリオレフィン系シートは、ポリエチレンシート、ポリプロピレンシート、ポリスチレンシートのいずれかであることを特徴とする請求項1記載のウェーハの加工方法。
- 該一体化工程において、該ポリオレフィン系シートが該ポリエチレンシートである場合に加熱温度は120℃〜140℃であり、該ポリオレフィン系シートが該ポリプロピレンシートである場合に加熱温度は160℃〜180℃であり、該ポリオレフィン系シートが該ポリスチレンシートである場合に加熱温度は220℃〜240℃であることを特徴とする請求項5記載のウェーハの加工方法。
- 該ウェーハは、Si、GaN、GaAs、ガラスのいずれかで構成されることを特徴とする請求項1記載のウェーハの加工方法。
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