JP7382110B2 - 回転を伴う積層によるチップの組み立て - Google Patents
回転を伴う積層によるチップの組み立て Download PDFInfo
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- JP7382110B2 JP7382110B2 JP2021535163A JP2021535163A JP7382110B2 JP 7382110 B2 JP7382110 B2 JP 7382110B2 JP 2021535163 A JP2021535163 A JP 2021535163A JP 2021535163 A JP2021535163 A JP 2021535163A JP 7382110 B2 JP7382110 B2 JP 7382110B2
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Description
Claims (26)
- 各々が少なくとも1つのチップ・ブロックを含む複数のチップ層を準備するステップであって、各チップ・ブロックは、同じ機能が割り当てられた複数の電極を含む、前記準備するステップと、
重なり合うチップ・ブロックの少なくとも1つのスタックを形成するように前記複数のチップ層を順次積層するステップであって、各スタックは、水平面におけるシフトを有する垂直に配列された電極の複数のグループを保持する、前記積層するステップと、
前記複数のグループの少なくとも1つについて、前記複数のチップ層に少なくとも部分的にスルー・ホールを形成し、前記複数のグループの前記少なくとも1つにおける垂直に配列された電極の電極表面を露出させるステップと、
伝導性材料によって前記スルー・ホールを充填するステップと
を含む、方法。 - 前記少なくとも1つのチップ・ブロックは、回転対称の方式で配置されたチップ・ブロックのアレイを含み、前記複数のチップ層を積層するステップは、前記複数のチップ層のうち1つの前記アレイ内の各チップ・ブロックが前記複数のチップ層のうち他のものの前記アレイ内の対称的に位置するチップ・ブロックと重なり合うようにして行われ、前記重なり合うチップ・ブロックの前記少なくとも1つのスタックは、重なり合うチップ・ブロックのスタックのアレイを含む、請求項1に記載の方法。
- 各チップ・ブロックは、前記チップ・ブロックの前記アレイの配置と同じ回転対称を有する同一形状を有し、各チップ・ブロックについての前記複数の電極のそれぞれの表面は、前記チップ・ブロックの中心周りの回転操作が加えられた場合に各表面が他の表面と隣接し、かつ少なくとも部分的にシフトされるように構成されるように配置される、請求項2に記載の方法。
- 前記複数のチップ層を積層するステップは、前記グループにおける前記垂直に配列された電極の前記電極表面が前記水平面において一周するように配置されるように行われる、請求項2または3に記載の方法。
- 前記複数のチップ層を積層するステップは、
1つ以上の絶縁接着層によって前記複数のチップ層を結合するステップを含み、前記重なり合うチップ・ブロックの各スタックは、前記1つ以上の絶縁接着層各々の対応部分を保持する、請求項2~4のいずれか1項に記載の方法。 - 前記1つ以上の絶縁接着層のうち少なくとも2つの各対応部分は、形成されるべき前記スルー・ホールの一部としての開口部を有する、請求項5に記載の方法。
- 各電極表面はホール形成に対するストッパとして働くように構成され、かつ前記複数のチップ層を貫通する前記スルー・ホールの中心部分の形成を可能にする形状を有し、前記スルー・ホールの前記中心部分はいずれの前記電極表面によってもカバーされない部分である、請求項6に記載の方法。
- 前記アレイの配置の前記回転対称はn回回転対称であり、1つのチップ層を他のチップ層に積層するステップにおいて行われる各回転は、積層のベース位置に関する前記アレイの中心周りの360/n*i(i=1,…,n-1)度の回転であり、前記チップ層の数はnであり、各チップ・ブロックは平面充填の単位形状を有し、前記スルー・ホールはnまたはn-1チップ層を貫くように形成される、請求項2~7のいずれか1項に記載の方法。
- nは4であり、各チップ・ブロックは略正方形の形状を有する、請求項8に記載の方法。
- 複数の積層アセンブリを得るために、前記複数のチップ層を準備するステップと、前記複数のチップ層を積層するステップと、前記スルー・ホールを形成するステップとが繰り返し行われ、前記スルー・ホールを前記形成するステップは、前記スルー・ホールが各積層アセンブリを部分的に貫通するようにして行われ、前記方法は、さらに、
前記積層アセンブリの前記スルー・ホールが互いに連絡するように前記複数の積層アセンブリを積層するステップを含み、前記スルー・ホールを充填するステップは、前記複数の積層アセンブリに対して一度に行われる、請求項2~9のいずれか1項に記載の方法。 - 複数の積層アセンブリを得るために、前記複数のチップ層を準備するステップと、前記複数のチップ層を積層するステップとが繰り返し行われ、前記方法はさらに、
並進シフトを伴って前記複数の積層アセンブリを積層するステップを含み、前記スルー・ホールを形成するステップおよび前記スルー・ホールを充填するステップは、それぞれ前記複数の積層アセンブリに対して一度に行われる、請求項2~9のいずれか1項に記載の方法。 - 準備される各チップ層は、ウェハまたはパネルの形を有し、前記方法はさらに、
前記複数のチップ層をダイシングして複数のチップ・アセンブリにするステップを含み、各チップ・アセンブリは、前記重なり合うチップ・ブロックの各スタックに対応する、請求項2~11のいずれか1項に記載の方法。 - 前記スルー・ホールを形成するステップは、エッチングもしくはレーザ処理またはその両方によって行われ、前記スルー・ホールを充填するステップは、射出成形はんだ付け(IMS)技術によって行われる、請求項1~12のいずれか1項に記載の方法。
- 各チップ・ブロックは、半導体デバイスまたは薄膜電池を有する、請求項1~13のいずれか1項に記載の方法。
- 少なくとも1つのチップ・ブロックを含むチップ層であって、各チップ・ブロックは、前記チップ層を貫くビア・ホールの形成が可能な複数の区域を有する、前記チップ層と、
各チップ・ブロックについて前記区域のそれぞれの位置に置かれた複数の電極とを含み、前記複数の電極には同じ機能が割り当てられ、かつそれぞれの電極表面は、各電極表面が、他の1つの電極表面に対する所定の操作に基づいて水平面におけるシフトを伴って前記他の1つの電極表面に隣接するように配置される、チップ構造。 - 前記チップ層の前記少なくとも1つのチップ・ブロックは、回転対称の方式で配置されたチップ・ブロックのアレイを含み、前記チップ層の前記アレイの各チップ・ブロックが、他の対称的に位置するチップ・ブロックに対して前記チップ層の前記アレイの中心周りの回転操作が加えられた場合に、前記チップ層の前記アレイの前記他の対称的に位置するチップ・ブロックと重なり合うようにされる、請求項15に記載のチップ構造。
- 前記チップ層の前記アレイにおける各チップ・ブロックは、前記チップ・ブロックの前記アレイの配置と同じ回転対称を有する同一形状を有する、請求項16に記載のチップ構造。
- 前記チップ構造はさらに、
前記チップ層の上または中に形成された絶縁接着層を含み、各絶縁接着層は、前記チップ・ブロックの前記アレイに対応する複数の部分を含む、請求項16または17に記載のチップ構造。 - 前記絶縁接着層の各部分は、前記電極表面の位置に置かれた複数の開口部を有する、請求項18に記載のチップ構造。
- 前記回転対称はn回回転対称であり、前記アレイの中心周りの前記回転操作は、360/n度の回転であり、前記チップ・ブロックの中心周りの前記回転操作は、360/n度の回転であり、前記アレイの各チップ・ブロックは平面充填の単位形状を有する、請求項16~19のいずれか1項に記載のチップ構造。
- 積層チップ構造であって、請求項15~20のいずれか1項に記載のチップ構造を複数含み、前記複数のチップ構造は、重なり合うチップ・ブロックのスタックを形成するように積層された複数のチップ層を提供し、前記スタックにおける前記重なり合うチップ・ブロックのうち少なくとも2つのそれぞれのビア・ホールは、スルー・ホールを形成するように互いに連絡しており、前記複数のチップ構造はさらに、前記重なり合うチップ・ブロックの前記スタックに対して、同じ機能を割り当てられた、垂直に配列された電極の複数のグループを提供し、各グループの前記垂直に配列された電極は水平面におけるシフトを有するように配置され、前記積層チップ構造はさらに、
前記重なり合うチップ・ブロックの前記スタックに対する前記スルー・ホールに充填された伝導性材料を含み、前記スルー・ホールに充填された前記伝導性材料は、前記グループのうちの1つの垂直に配列された電極の電極表面と接触している、積層チップ構造。 - 各チップ層は1つのチップ・ブロックを含み、前記複数のチップ層は、1つのチップ層の前記チップ・ブロックが他のチップ層の前記チップ・ブロックと回転対称の方式で重なり合うように積層され、前記積層チップ構造は、個片化されたチップ・アセンブリである、請求項21に記載の積層チップ構造。
- 各チップ層は、回転対称の方式で配置されたチップ・ブロックのアレイを含み、1つのチップ層の前記アレイ内の各チップ・ブロックが他のチップ層の前記アレイ内の対称的に位置するチップ・ブロックと重なり合うことで、前記重なり合うチップ・ブロックの前記スタックと、重なり合うチップ・ブロックの1つ以上の他のスタックとを構成するように前記複数の前記チップ層が積層され、前記重なり合うチップ・ブロックの前記スタックおよび前記他のスタックはアレイ状に配置される、請求項21または22に記載の積層チップ構造。
- 前記グループのうちの前記1つの前記垂直に配列された電極の前記電極表面は、前記スルー・ホールの中心周りを一周以上するように配置され、前記複数のチップ層は少なくとも1ユニットの積層された複数の層を含み、積層された複数の層の各ユニットは一周に対応する、請求項23に記載の積層チップ構造。
- 前記積層チップ構造はさらに、
2つ以上の絶縁接着層を含み、各絶縁接着層は、隣接する2つのチップ層を結合し、かつ前記重なり合うチップ・ブロックの前記スタックの前記アレイに対応する複数の部分を含み、対応する部分の少なくとも2つは前記スルー・ホールの一部としてのそれぞれの開口部を有する前記1つのグループに関係する、請求項23または24に記載の積層チップ構造。 - 積層チップ構造であって、
重なり合うチップ・ブロックのスタックを形成するように積層された複数のチップ層であって、前記スタックにおける前記重なり合うチップ・ブロックのうち少なくとも2つは、スルー・ホールを形成するように互いに連絡するそれぞれのビア・ホールを有する、前記複数のチップ層と、
前記重なり合うチップ・ブロックの前記スタックに対する、同じ機能を割り当てられた、垂直に配列された電極の複数のグループであって、各グループの前記垂直に配列された電極は、水平面におけるシフトを有するように配置される、前記電極の複数のグループと、
前記重なり合うチップ・ブロックの前記スタックに対する前記スルー・ホールに充填された伝導性材料であって、前記スルー・ホールに充填された前記伝導性材料は、前記複数のグループのうちの1つの垂直に配列された電極の電極表面と接触している、前記伝導性材料と
を含む、積層チップ構造。
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US16/249,639 US10991685B2 (en) | 2019-01-16 | 2019-01-16 | Assembling of chips by stacking with rotation |
PCT/IB2020/050229 WO2020148630A1 (en) | 2019-01-16 | 2020-01-13 | Assembling of chips by stacking with rotation |
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JP2011166026A (ja) | 2010-02-12 | 2011-08-25 | Elpida Memory Inc | 半導体装置 |
US20150123284A1 (en) | 2013-11-07 | 2015-05-07 | Chajea JO | Semiconductor devices having through-electrodes and methods for fabricating the same |
JP2016004835A (ja) | 2014-06-13 | 2016-01-12 | 株式会社ディスコ | 積層デバイスの製造方法 |
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US20150123284A1 (en) | 2013-11-07 | 2015-05-07 | Chajea JO | Semiconductor devices having through-electrodes and methods for fabricating the same |
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