JP2017041574A - ウエーハの加工方法 - Google Patents
ウエーハの加工方法 Download PDFInfo
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- 238000003672 processing method Methods 0.000 title abstract description 16
- 229920005989 resin Polymers 0.000 abstract description 88
- 239000011347 resin Substances 0.000 abstract description 88
- 239000004065 semiconductor Substances 0.000 abstract description 53
- 238000000926 separation method Methods 0.000 abstract description 45
- 239000007788 liquid Substances 0.000 abstract description 44
- 238000000034 method Methods 0.000 abstract description 38
- 238000000576 coating method Methods 0.000 abstract description 23
- 238000000227 grinding Methods 0.000 abstract description 21
- 239000011248 coating agent Substances 0.000 abstract description 20
- 230000002542 deteriorative effect Effects 0.000 abstract description 2
- 235000012431 wafers Nutrition 0.000 description 95
- 230000001681 protective effect Effects 0.000 description 22
- 238000005520 cutting process Methods 0.000 description 18
- 238000002156 mixing Methods 0.000 description 10
- 239000002390 adhesive tape Substances 0.000 description 8
- 239000010409 thin film Substances 0.000 description 7
- 239000007767 bonding agent Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 239000010408 film Substances 0.000 description 5
- 230000001678 irradiating effect Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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- H—ELECTRICITY
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
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- H01L21/02005—Preparing bulk and homogeneous wafers
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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
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- 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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- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30604—Chemical etching
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- H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
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- 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
- H01L2221/68336—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 involving stretching of the auxiliary support post dicing
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Abstract
【解決手段】本発明により、複数のデバイスが分割予定ラインによって区画され表面に形成されたウエーハの加工方法であって、個々のデバイスに分割されたウエーハの表面に該表面を保護する保護部材が配設される保護部材配設工程と、液状のダイボンド用樹脂をウエーハの裏面に塗布して固化させることによりダイボンド用の樹脂を個々のデバイスの裏面に敷設する樹脂敷設工程と、裏面に該樹脂が敷設された該デバイスをウエーハから分離する分離工程と、から少なくとも構成されるウエーハの加工方法が提供される。
【選択図】図4
Description
個々のデバイスに分割されたウエーハの表面に該表面を保護する保護部材が配設される保護部材配設工程と、
液状のダイボンド用樹脂をウエーハの裏面に塗布して固化させることによりダイボンド用の樹脂を個々のデバイスの裏面に敷設する樹脂敷設工程と、
裏面に該樹脂が敷設された該デバイスをウエーハから分離する分離工程と、
から少なくとも構成されるウエーハの加工方法が提供される。
図1には、半導体ウエーハWの表面側に形成された分割予定ラインに沿って、該デバイスの仕上がり厚みに相当する分離溝を形成する分離溝形成ステップが実行される状態が示されている。
図4、5に基づいて、本発明の樹脂敷設工程について説明する。上記した保護部材配設工程が終了した後、図4に示すように、半導体ウエーハWがチャックテーブル30から取り出され、上記分割ステップにて研削された該半導体ウエーハWの裏面側を上面にして、樹脂敷設装置(装置全体の図示は省略)の保持テーブル40に表面側を保持させる保持ステップを実行する。当該保持テーブル40も、上記チャックテーブル30と同様の構成を有しており、図示しない吸引手段により吸引保持されると共に、図示しないサーボモータにより回転可能に構成されている。
上記した樹脂敷設工程が終了した後、移し替え工程を実施する。上記したように、該樹脂敷設工程が終了した半導体ウエーハWは、分離溝22にダイボンド用樹脂が侵入しておらず、個々のデバイス21は、保護テープ23のみにより連結されている状態である。ここで、当該半導体ウエーハWを、上記樹脂敷設装置の保持テーブル40から取り外し、図6に示すように、環状のフレームFの内側開口部を覆うように外周部が装着された伸縮性に優れた粘着テープTの表面に、半導体デバイスWの裏面、すなわち上記ダイボンド用樹脂層60が形成された面を貼着し、表面側を保護すべく貼着されていた保護テープ23を剥離し、移し替え工程が終了する。
上記移し替え工程が終了すると、裏面に該樹脂が敷設された該デバイスをウエーハから分離する分離工程を実施する。該分離工程は、図7にその一部を示す分離装置70にて実施されるものであり、該分離装置70は、フレーム保持部材71と、その上面部に環状フレームFを載置して上記環状のフレームFを保持するクランプ72と、該クランプ72により保持された環状のフレームFに装着された半導体ウエーハWを拡張するための少なくとも上方が開口した円筒形状からなる拡張ドラム73とを備えている。フレーム保持部材71は、拡張ドラム73を囲むように設置された複数のエアシリンダ723aと、エアシリンダ723aから延びるピストンロッド723bとから構成される支持手段723により昇降可能に支持されている。
11:スピンドルハウジング
12:回転スピンドル
13:切削ブレード
21:デバイス
22:分離溝
23:保護テープ(保護部材)
30:チャックテーブル
33:研削ホイール
50:塗布ユニット
51:塗布ノズル
52:混合ユニット
53:揺動ユニット
54:高圧エアータンク
55:液体樹脂タンク
60:ダイボンド用樹脂層
70:分離装置
71:フレーム保持部材
72:クランプ
73:拡張ドラム
720:支持手段
Claims (10)
- 複数のデバイスが分割予定ラインによって区画され表面に形成されたウエーハの加工方法であって、
個々のデバイスに分割されたウエーハの表面に該表面を保護する保護部材が配設される保護部材配設工程と、
液状のダイボンド用樹脂をウエーハの裏面に塗布して固化させることによりダイボンド用の樹脂を個々のデバイスの裏面に敷設する樹脂敷設工程と、
裏面に該樹脂が敷設された該デバイスをウエーハから分離する分離工程と、
から少なくとも構成されるウエーハの加工方法。 - 該保護部材配設工程は、
該保護部材を配設する前に該分割予定ラインに沿って、該デバイスの仕上がり厚みに相当する分離溝を形成する分離溝形成ステップと、
該分離溝が形成された該ウエーハの表面に保護部材を貼着する保護部材貼着ステップと、
該ウエーハを薄化して該分離溝を該ウエーハの裏面に表出させ、該ウエーハを個々のデバイスに分割する分割ステップと、
から少なくとも構成される請求項1記載のウエーハの加工方法。 - 該分離溝形成ステップは、切削ブレードを分割予定ラインに沿って切り込み、デバイスの仕上がり厚みに相当する深さを備えた分離溝を形成する、請求項2に記載のウエーハの加工方法。
- 該分離溝形成ステップは、ウエットエッチング、又はドライエッチングによって分割予定ラインに該デバイスの仕上がり厚みに相当する深さの分離溝を形成する請求項2に記載のウエーハの加工方法。
- 該分離溝形成ステップは、レーザー光線を分割予定ラインに沿って照射し、該デバイスの仕上がり厚みに相当する深さの分離溝を形成するフレーム請求項2に記載のウエーハの加工方法。
- 該分割ステップは、ウエーハの裏面を研削して薄化し分離溝をウエーハの裏面に表出させる請求項2ないし5のいずれかに記載のウエーハの加工方法。
- 該樹脂敷設工程の後、該樹脂が敷設されたウエーハの裏面に粘着テープを貼着すると共に、該ウエーハを収容する開口を有するフレームで該粘着テープを介してウエーハを支持し、該ウエーハの表面から保護部材を除去する移し替え工程を実施し、
該移し替え工程の実施後、該粘着テープからデバイスをピックアップして該分離工程を実施する、請求項1ないし6のいずれかに記載のウエーハの加工方法。 - 該樹脂敷設工程は、
該ウエーハの裏面を露出させて回転可能なテーブルに保持する保持ステップと、
該テーブルを回転させ、該液状樹脂を霧状にしてウエーハの裏面に塗布する塗布ステップと、
該ウエーハの裏面に塗布された液状樹脂に外的刺激を付与して固化させることにより該樹脂をウエーハの裏面に敷設する敷設ステップと、
から、少なくとも構成される請求項1ないし7のいずれかに記載のウエーハの加工方法。 - 該塗布ステップは、
該液状樹脂を霧状にしてウエーハの裏面に塗布して個々のデバイスの裏面に薄膜層を形成し、その後、さらに該薄膜層に重ねて薄膜層を積層させて所望の厚みに仕上げることを含む、請求項8に記載されたウエーハの加工方法。 - 該塗布ステップにおける該薄膜層の一度に形成される厚みが、3〜7μmである請求項9に記載されたウエーハの加工方法。
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MYPI2016702824A MY180537A (en) | 2015-08-21 | 2016-08-03 | Wafer processing method using adhesive tape to pick up device chips |
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DE102016215472.9A DE102016215472A1 (de) | 2015-08-21 | 2016-08-18 | Waferbearbeitungsverfahren |
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