JP7378503B2 - ダイ同士の接合のための方法および構造 - Google Patents
ダイ同士の接合のための方法および構造 Download PDFInfo
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- JP7378503B2 JP7378503B2 JP2021571417A JP2021571417A JP7378503B2 JP 7378503 B2 JP7378503 B2 JP 7378503B2 JP 2021571417 A JP2021571417 A JP 2021571417A JP 2021571417 A JP2021571417 A JP 2021571417A JP 7378503 B2 JP7378503 B2 JP 7378503B2
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Description
102-2、102-4、102-6、102-8 第2のダイ
200 接合半導体デバイス
206 接合境界面
208 基板
210 デバイス層
212 周辺回路
214 埋込DRAMセル
216 周辺トランジスタ
218 DRAM選択トランジスタ
219 ビット線
222 相互連結層
224 接合層
226 接合コンタクト
228 接合層
230 接合コンタクト
232 相互連結層
233 メモリスタック
238 3D NANDメモリストリング
248 半導体層
250 パッドアウト相互連結層
252 コンタクトパッド
254 コンタクト
302 デバイスウェハ
304 保護層
306 接着テープ
308 接着層
310 第1のキャリアウェハ
312 ダイ
314 保護層の一部分
322 第1のダイ
324 第2のダイ
325 接合境界面
326 保護層の一部分
328 接着層
330 第2のキャリアウェハ
402 デバイスウェハ
404 保護層
406 接着テープ
408 接着部分
410 第1のキャリアウェハ
412 ダイ
414 保護層の一部分
424 空間
428 接着部分
430 第2のキャリアウェハ
432 第1のダイ
434 空間
435 接合境界面
442 第2のダイ
601 ウェハ
602 チップ
603 ウェハ
604 キャリアウェハ
605 ダイ
606 ウェハ
607 ウェハ
Claims (18)
- 複数のダイを得るために1つまたは複数のデバイスウェハをダイシングするステップと、
第1のキャリアウェハおよび第2のキャリアウェハに複数の開口をそれぞれ形成するステップと、
前記第1のキャリアウェハおよび第2のキャリアウェハの開口の各々の底に接着部分を形成するステップと、
前記複数のダイのうちの少なくとも1つの第1のダイを前記第1のキャリアウェハに配置し、前記複数のダイのうちの少なくとも1つの第2のダイを前記第2のキャリアウェハに配置するステップであって、前記少なくとも1つの第1のダイおよび前記少なくとも1つの第2のダイをそれぞれの前記キャリアウェハのそれぞれの開口へと各々配置し、前記少なくとも1つの第1のダイおよび前記少なくとも1つの第2のダイは各々が機能的である、ステップと、
前記少なくとも1つの第1のダイをそれぞれの第2のダイと各々接合するステップと、
前記第1のダイおよびそれぞれの前記第2のダイの一方を各々が備える複数の接合半導体デバイスを形成するために、前記第1のキャリアウェハおよび前記第2のキャリアウェハをそれぞれ除去するステップと
を含む、接合のための方法。 - 前記ダイシングするステップの前に、それぞれの保護層を前記1つまたは複数のデバイスウェハにわたって形成するステップと、
前記複数のダイをそれぞれの保護層の一部分の下に各々形成するために、それぞれの前記保護層で、前記1つまたは複数のデバイスウェハをダイシングするステップと
をさらに含む、請求項1に記載の方法。 - 前記少なくとも1つの第1のダイおよび前記少なくとも1つの第2のダイをそれぞれの前記キャリアウェハに配置するステップは、前記少なくとも1つの第1のダイおよび前記少なくとも1つの第2のダイをそれぞれの前記接着部分に取り付けるステップであって、それぞれの前記保護層の前記一部分は前記接着部分を向かない、ステップを含む、請求項2に記載の方法。
- 前記接着部分を形成するステップは、それぞれの前記ダイと接触している表面に複数の接着部分を形成するステップを含み、
前記少なくとも1つの第1のダイおよび前記少なくとも1つの第2のダイをそれぞれの前記キャリアウェハに配置するステップは、前記少なくとも1つの第1のダイおよび前記少なくとも1つの第2のダイをそれぞれの前記接着部分に取り付けるステップを含む、請求項3に記載の方法。 - それぞれの前記保護層の一部分を前記少なくとも1つの第1のダイおよび前記少なくとも1つの第2のダイの各々から除去するステップをさらに含む、請求項3に記載の方法。
- それぞれの前記保護層の一部分が除去された後、前記少なくとも1つの第1のダイおよび前記少なくとも1つの第2のダイの各々にそれぞれの表面処理を実施するステップをさらに含む、請求項5に記載の方法。
- 前記接合はハイブリッド接合を含む、請求項1に記載の方法。
- 前記少なくとも1つの第1のダイを配置するステップは、前記少なくとも1つの第1のダイを前記第1のキャリアウェハにおいて均一な分布で配置するステップを含む、請求項1に記載の方法。
- 前記少なくとも1つの第1のダイを、前記第1のキャリアウェハにわたって完全に覆って配置するステップをさらに含む、請求項8に記載の方法。
- 複数のダイを得るために1つまたは複数のデバイスウェハをダイシングするステップと、
第1のキャリアウェハにおける第1の開口の各々の底に接着部分を形成するステップと、
前記複数のダイのうちの少なくとも1つの第1のダイを、前記第1のキャリアウェハにおけるそれぞれの前記第1の開口へ配置するステップであって、前記少なくとも1つの第1のダイは前記第1のキャリアウェハにおいて均一な分布を含む、ステップと、
前記少なくとも1つの第1のダイを、第2のキャリアウェハにおけるデバイス層と接合するステップと、
前記第1のキャリアウェハおよび前記第2のキャリアウェハをそれぞれ除去するステップと
を含む、接合のための方法。 - 前記少なくとも1つの第1のダイを、前記第1のキャリアウェハにわたって完全に覆って配置するステップをさらに含む、請求項10に記載の方法。
- 前記デバイス層を形成するために、前記複数のダイのうちの少なくとも1つの第2のダイを、前記第2のキャリアウェハにおけるそれぞれの第2の開口へと配置するステップと、
前記接合するステップの前に、前記少なくとも1つの第1のダイの各々を、前記少なくとも1つの第2のダイのうちの対応するものと位置合わせするために、前記第1のキャリアウェハおよび前記第2のキャリアウェハの一方をひっくり返すステップと
をさらに含む、請求項10に記載の方法。 - 前記1つまたは複数のデバイスウェハにわたってそれぞれの保護層を形成するステップと、
複数の第1のダイおよび複数の第2のダイをそれぞれの保護層の一部分の下に各々形成するために、それぞれの前記保護層で、前記1つまたは複数のデバイスウェハをダイシングするステップと
をさらに含む、請求項12に記載の方法。 - 前記第1のキャリアウェハにおける前記第1の開口、および、前記第2のキャリアウェハにおける前記第2の開口を形成するステップと、
前記第2の開口の各々の底に接着部分を形成するステップと、
前記少なくとも1つの第1のダイおよび前記少なくとも1つの第2のダイを、それぞれの前記開口におけるそれぞれの接着部分に各々取り付けるステップと
をさらに含む、請求項13に記載の方法。 - 前記接合はハイブリッド接合を含む、請求項10に記載の方法。
- 第1のキャリアウェハにおける複数の第1の開口と、
前記複数の第1の開口の各々の底における第1の接着部分と、
前記複数の第1の開口の各々に配置され、前記接着部分に取り付けられる第1のダイと、
第2のキャリアウェハにおける複数の第2の開口と、
前記複数の第2の開口の各々の底における第2の接着部分と、
前記複数の第2の開口の各々に配置され、前記第2の接着部分に取り付けられる第2のダイであって、複数の前記第1のダイの上面が複数の前記第2のダイの上面に接合され、複数の接合半導体デバイスを形成する、第2のダイと
を備える、接合のための構造。 - 前記複数の接合半導体デバイスは、前記第1のキャリアウェハおよび前記第2のキャリアウェハにわたって均一な分布を有する、請求項16に記載の構造。
- 前記複数の接合半導体デバイスは、前記第1のキャリアウェハおよび前記第2のキャリアウェハにわたって完全な覆いを有する、請求項17に記載の構造。
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CN110892521A (zh) | 2020-03-17 |
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CN112530863A (zh) | 2021-03-19 |
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