JP6660156B2 - 積層体および合同体・半導体装置の製造方法 - Google Patents
積層体および合同体・半導体装置の製造方法 Download PDFInfo
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- JP6660156B2 JP6660156B2 JP2015222896A JP2015222896A JP6660156B2 JP 6660156 B2 JP6660156 B2 JP 6660156B2 JP 2015222896 A JP2015222896 A JP 2015222896A JP 2015222896 A JP2015222896 A JP 2015222896A JP 6660156 B2 JP6660156 B2 JP 6660156B2
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Description
(合同体1)
図1および図2に示すように、合同体1は、はく離ライナー13とはく離ライナー13上に配置された積層体71a、71b、71c、……、71m(以下、「積層体71」と総称する。)とを含む。積層体71aと積層体71bのあいだの距離、積層体71bと積層体71cのあいだの距離、……積層体71lと積層体71mのあいだの距離は一定である。合同体1はロール状をなすことができる。
第1主面と第1主面に対向した第2主面とで半導体裏面保護フィルム11の両面は定義できる。第1主面は粘着剤層122と接している。第2主面は、はく離ライナー13と接している。
ダイシングシート12は、基材層121と、基材層121上に配置された粘着剤層122とを含む。
はく離ライナー13は、たとえばポリエチレンテレフタレート(PET)フィルムである。
図3に示すように、積層体71の半導体裏面保護フィルム11に半導体ウエハ4を固定する。具体的には、圧着ロールなどの押圧手段を用いて50℃〜100℃で半導体ウエハ4に積層体71を圧着する。回路面と回路面に対向した裏面(非回路面、非電極形成面などとも称される)とで半導体ウエハ4の両面は定義できる。半導体ウエハ4はたとえばシリコンウエハである。
粘着剤層122の第1部分122Aはエネルギー線により硬化する性質を有する。粘着剤層122の第2部分122Bもエネルギー線により硬化する性質を有する。変形例1では、組み合わせ5を形成する工程の後に、粘着剤層122にエネルギー線を照射し組み合わせ5をピックアップする。エネルギー線を照射すると、組み合わせ5のピックアップが容易である。
粘着剤層122の第1部分122Aはエネルギー線により硬化されている。粘着剤層122の第2部分122Bもエネルギー線により硬化されている。
図6に示すように、粘着剤層122の片面全体が半導体裏面保護フィルム11と接している。
変形例1〜変形例3などは、任意に組み合わせることができる。
(半導体裏面保護フィルムの作製)
アクリル酸エチル−メチルメタクリレートを主成分とするアクリル酸エステル系ポリマー(根上工業社製 パラクロンW−197C)の固形分―溶剤を除く固形分―100重量部に対して、エポキシ樹脂(三菱化学社製 jER YL980)300重量部とエポキシ樹脂(東都化成社製 KI−3000)130重量部とフェノール樹脂(明和化成社製 MEH7851−SS)460重量部と球状シリカ(アドマテックス社製 SO−25R 平均粒径0.5μmの球状シリカ)690重量部と染料(オリエント化学工業社製 OIL BLACK BS)10重量部と触媒(四国化成社製 2PHZ)80重量部とをメチルエチルケトンに溶解して、固形分濃度23.6重量%の樹脂組成物の溶液を調製した。樹脂組成物の溶液をはく離ライナー(シリコーン離型処理した厚み50μmのポリエチレンテレフタレートフィルム)に塗布し、130℃で2分間乾燥させた。以上の手段により平均厚み20μmのフィルムを得た。直径330mmの円盤状フィルム(以下、実施例において「半導体裏面保護フィルム」という)をフィルムから切り出した。
ハンドローラーを用いてダイシングシート(日東電工社製 V−8−AR 平均厚み65μmの基材層と平均厚み10μmの粘着剤層とからなるダイシングシート)に半導体裏面保護フィルムをつけることにより、実施例1の積層体を作製した。実施例1の積層体は、ダイシングシートと、粘着剤層に固定された半導体裏面保護フィルムとからなる。
表1の配合表にしたがって半導体裏面保護フィルムを作製した―ということ以外は実施例1と同じ方法で実施例2〜3・比較例1〜2の積層体を作製した。
120℃で2時間 半導体裏面保護フィルムを加熱し、はく離ライナーを取り除いた。幅10mm、長さ22.5mm、厚み0.02mmのサンプルを加熱後の半導体裏面保護フィルムから切り出した。レオメトリック社製の動的粘弾性測定装置「Solid Analyzer RS A2」を用いて、引張モード、周波数1Hz、昇温速度10℃/分、窒素雰囲気下、0℃から100℃で動的粘弾性測定をおこなった。23℃〜80℃の全範囲で引張貯蔵弾性率が1GPa以上であるときは○と判定した。そうでないときは×と判定した。結果を表1に示す。
積層体の半導体裏面保護フィルムにウエハ(裏面研磨処理された、直径8インチ厚み0.2mmのシリコンミラーウエハ)を70℃で圧着した。積層体に固定されたウエハをダイシングすることにより、組み合わせ―シリコンチップとシリコンチップに固定されたダイシング後半導体裏面保護フィルムとからなる―を形成した。図7に示すように、切込深さZ1―シリコンチップ表面からの深さ―が45μmとなるように調整した。切込深さZ2がダイシングテープの粘着剤層厚みの1/2までとなるように、切込深さZ2を調整した。
(ウエハ研削条件)
研削装置:商品名「DFG−8560」ディスコ社製
(貼り合わせ条件)
貼り付け装置:商品名「MA−3000III」日東精機社製
貼り付け速度計:10mm/min
貼り付け圧力:0.15MPa
貼り付け時のステージ温度:70℃
(ダイシング条件)
ダイシング装置:商品名「DFD−6361」ディスコ社製
ダイシングリング:「2−8−1」(ディスコ社製)
ダイシング速度:30mm/sec
ダイシングブレード:
Z1;ディスコ社製「203O−SE 27HCDD」
Z2;ディスコ社製「203O−SE 27HCBB」
ダイシングブレード回転数:
Z1;40,000r/min
Z2;45,000r/min
カット方式:ステップカット
チップサイズ:2.0mm角
11 半導体裏面保護フィルム
12 ダイシングシート
121 基材層
122 粘着剤層
122A 第1部分
122B 第2部分
13 はく離ライナー
71 積層体
5 組み合わせ
6 被着体
8 吸着台
41 半導体チップ
51 バンプ
61 導電材
111 ダイシング後半導体裏面保護フィルム
Claims (4)
- 基材層および前記基材層上に配置された粘着剤層を含むダイシングシートと、
前記粘着剤層上に配置された半導体裏面保護フィルムとを含み、
硬化後における前記半導体裏面保護フィルムの引張貯蔵弾性率が23℃〜80℃全範囲で1GPa以上であり、前記引張貯蔵弾性率が、周波数1Hz、昇温速度10℃/分、窒素雰囲気下で測定され、
硬化後における前記半導体裏面保護フィルムの80℃引張貯蔵弾性率の 硬化後における前記半導体裏面保護フィルムの23℃引張貯蔵弾性率に対する比が0.4〜1.0である、
積層体。 - 前記半導体裏面保護フィルムは樹脂成分を含み、
前記樹脂成分は、アクリル樹脂、エポキシ樹脂およびフェノール樹脂を含み、
前記樹脂成分100重量%中における前記アクリル樹脂の含有量は0.1重量%〜30重量%である、請求項1に記載の積層体。 - はく離ライナーと
前記はく離ライナー上に配置された請求項1または2に記載の積層体とを含む合同体。 - 請求項1または2に記載の積層体の前記半導体裏面保護フィルムに半導体ウエハを固定する工程と、
前記積層体の前記半導体裏面保護フィルムに前記半導体ウエハを固定する工程の後に、前記半導体裏面保護フィルムを硬化させる工程と、
前記半導体裏面保護フィルムを硬化させる工程の後に、前記半導体裏面保護フィルムに固定された前記半導体ウエハをダイシングすることにより、半導体チップおよび前記半導体チップに固定されたダイシング後半導体裏面保護フィルムを含む組み合わせを形成する工程と、
前記ダイシングシートから前記組み合わせを剥離する工程とを含む半導体装置の製造方法。
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CN201610959486.0A CN106696408B (zh) | 2015-11-13 | 2016-11-03 | 层叠体和联合体以及半导体装置的制造方法 |
KR1020160148541A KR102559864B1 (ko) | 2015-11-13 | 2016-11-09 | 적층체 및 합동체·반도체 장치의 제조 방법 |
TW105136616A TWI710462B (zh) | 2015-11-13 | 2016-11-10 | 積層體及併合體、半導體裝置之製造方法 |
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