JP2011228474A - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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Abstract
【解決手段】マザーボードに設けられた複数の電極と積層デバイスの表面に設けられた複数の電極を接合して構成する半導体装置の製造方法。表面に複数の積層デバイスが形成された積層ウエーハの表面に保護部材を貼着し、積層ウエーハの裏面を研削して所定の厚みにし、積層ウエーハの裏面に補強ウエーハの表面をボンド剤で接合し、積層ウエーハを補強ウエーハとともに分割する。裏面に補強ウエーハが接合された個々の積層デバイスを形成する積層ウエーハ分割工程と、積層デバイスの表面に設けられた複数の電極をマザーボードに設けられた複数の電極に接合する積層デバイス接合工程と、積層デバイスの裏面に接合されている補強ウエーハを研削し、積層デバイスの裏面からの補強ウエーハ除去工程とを含む。
【選択図】図10
Description
表面に複数の積層デバイスが形成された積層ウエーハの表面に保護部材を貼着する保護部材貼着工程と、
保護部材が貼着された積層ウエーハの保護部材側を研削装置のチャックテーブル上に保持し、積層ウエーハの裏面を研削して積層ウエーハを所定の厚みに研削する積層ウエーハ研削工程と、
積層ウエーハ研削工程が実施された積層ウエーハの裏面に補強ウエーハの表面をボンド剤を介して接合する補強ウエーハ装着工程と、
補強ウエーハが接合された積層ウエーハを補強ウエーハとともに分割することにより裏面に補強ウエーハが接合された個々の積層デバイスを形成する積層ウエーハ分割工程と、
裏面に補強ウエーハが接合された積層デバイスの表面に設けられた複数の電極をマザーボードに設けられた複数の電極に接合する積層デバイス接合工程と、
積層デバイスが接合されたマザーボード側を研削装置のチャックテーブル上に保持し、積層デバイスの裏面に接合されている補強ウエーハを研削し、積層デバイスの裏面から補強ウエーハを除去する補強ウエーハ除去工程と、を含む、
ことを特徴とする半導体装置の製造方法が提供される。
マザーボードに設けられた複数の電極と対応する複数の電極が設けられている複数の積層デバイスが形成された積層ウエーハの表面に保護部材を貼着する保護部材貼着工程と、
保護部材が貼着された積層ウエーハの保護部材側を研削装置のチャックテーブル上に保持し、積層ウエーハの裏面を研削して積層ウエーハを所定の厚みに研削する積層ウエーハ研削工程と、
積層ウエーハ研削工程が実施された積層ウエーハの裏面に補強ウエーハの表面をボンド剤を介して接合する補強ウエーハ装着工程と、
補強ウエーハが接合された積層ウエーハの表面をマザーボードの表面に対面させて積層し、積層デバイスの表面に設けられた電極をマザーボードに設けられた電極に接合する積層デバイス接合工程と、
積層デバイスが積層されたマザーボード側を研削装置のチャックテーブル上に保持し、積層デバイスの裏面に接合されている補強ウエーハを研削し、積層デバイスの裏面から補強ウエーハを除去する補強ウエーハ除去工程と、を含む、
ことを特徴とする半導体装置の製造方法が提供される。
そして、積層デバイスの裏面から補強ウエーハを除去する補強ウエーハ除去工程においては、積層デバイスの裏面に接合されている補強ウエーハを研削して除去するので、積層デバイスに負荷がかかることがない。従って、積層デバイスの裏面から補強ウエーハを離脱するために補強ウエーハを250℃以上の温度に加熱し、積層デバイスに負荷がかからないように補強ウエーハを積層デバイスの裏面に沿ってスライドさせながら離脱するとともに、常温まで冷却する作業が不要となり生産性が向上する。
また、本発明による半導体装置の製造方法においては、積層ウエーハの裏面を研削して積層ウエーハを所定の厚みに加工した後、積層ウエーハの裏面に補強ウエーハの表面をボンド剤を介して接合し、補強ウエーハが接合された積層ウエーハの表面をマザーウエーハの表面に対面させて積層し、積層デバイスの表面に設けられた電極をマザーボードの表面に設けられた電極に接合するので、薄くなった積層ウエーハでも湾曲することなく、積層デバイスの表面に設けられた電極をマザーボードの表面に設けられた電極に確実に接合することができる。
そして、積層デバイスの裏面から補強ウエーハを除去する補強ウエーハ除去工程においては、積層デバイスの裏面に接合されている補強ウエーハを研削して除去するので、積層デバイスに負荷がかかることがない。従って、積層デバイスの裏面から補強ウエーハを離脱するために補強ウエーハを250℃以上の温度に加熱し、積層デバイスに負荷がかからないように補強ウエーハを積層デバイスの裏面に沿ってスライドさせながら離脱するとともに、常温まで冷却する作業が不要となり生産性が向上する。
先ず、複数の積層デバイス32が形成された積層ウエーハ3の表面に積層デバイス32を保護するための保護部材を貼着する保護部材貼着工程を実施する。即ち、図3の(a)および(b)に示すように積層ウエーハ3の表面3aに保護部材としての塩化ビニール等からなる保護テープ4を貼着する。
本発明による半導体装置の製造方法の第2の実施形態においても、先ず上記第1の実施形態と同様に上記保護部材貼着工程を実施し、そして上記積層ウエーハ研削工程と補強ウエーハ装着工程およびウエーハ支持工程を実施する。
22:半導体デバイス
221:電極
3:積層ウエーハ
32:積層デバイス
321:電極
4:保護テープ
5:研削装置
51:研削装置のチャックテーブル
52:研削手段
524:研削ホイール
6:補強ウエーハ
7:切削装置
71:切削装置のチャックテーブル
72:切削手段
723:切削ブレード
F:環状のフレーム
T:ダイシングテープ
Claims (3)
- 複数の電極が設けられたマザーボードの表面に、積層デバイスの表面を接合し、マザーボードに設けられた複数の電極と積層デバイスの表面に設けられた複数の電極とを接合して構成する半導体装置の製造方法であって、
表面に複数の積層デバイスが形成された積層ウエーハの表面に保護部材を貼着する保護部材貼着工程と、
保護部材が貼着された積層ウエーハの保護部材側を研削装置のチャックテーブル上に保持し、積層ウエーハの裏面を研削して積層ウエーハを所定の厚みに研削する積層ウエーハ研削工程と、
積層ウエーハ研削工程が実施された積層ウエーハの裏面に補強ウエーハの表面をボンド剤を介して接合する補強ウエーハ装着工程と、
補強ウエーハが接合された積層ウエーハを補強ウエーハとともに分割することにより裏面に補強ウエーハが接合された個々の積層デバイスを形成する積層ウエーハ分割工程と、
裏面に補強ウエーハが接合された積層デバイスの表面に設けられた複数の電極をマザーボードに設けられた複数の電極に接合する積層デバイス接合工程と、
積層デバイスが接合されたマザーボード側を研削装置のチャックテーブル上に保持し、積層デバイスの裏面に接合されている補強ウエーハを研削し、積層デバイスの裏面から補強ウエーハを除去する補強ウエーハ除去工程と、を含む、
ことを特徴とする半導体装置の製造方法。 - 複数の電極が設けられたマザーボードの表面に、積層デバイスの表面を接合し、マザーボードに設けられた複数の電極と積層デバイスの表面に設けられた複数の電極とを接合して構成する半導体装置の製造方法であって、
マザーボードに設けられた複数の電極と対応する複数の電極が設けられている複数の積層デバイスが形成された積層ウエーハの表面に保護部材を貼着する保護部材貼着工程と、
保護部材が貼着された積層ウエーハの保護部材側を研削装置のチャックテーブル上に保持し、積層ウエーハの裏面を研削して積層ウエーハを所定の厚みに研削する積層ウエーハ研削工程と、
積層ウエーハ研削工程が実施された積層ウエーハの裏面に補強ウエーハの表面をボンド剤を介して接合する補強ウエーハ装着工程と、
補強ウエーハが接合された積層ウエーハの表面をマザーボードの表面に対面させて積層し、積層デバイスの表面に設けられた電極をマザーボードに設けられた電極に接合する積層デバイス接合工程と、
積層デバイスが積層されたマザーボード側を研削装置のチャックテーブル上に保持し、積層デバイスの裏面に接合されている補強ウエーハを研削し、積層デバイスの裏面から補強ウエーハを除去する補強ウエーハ除去工程と、を含む、
ことを特徴とする半導体装置の製造方法。 - 該補強ウエーハ装着工程を実施した後で該積層デバイス接合工程を実施する前に、補強ウエーハが接合された積層ウエーハを個々の積層デバイスに分割する積層ウエーハ分割工程を実施する、請求項2記載の半導体装置の製造方法。
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