JP7516786B2 - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- JP7516786B2 JP7516786B2 JP2020040801A JP2020040801A JP7516786B2 JP 7516786 B2 JP7516786 B2 JP 7516786B2 JP 2020040801 A JP2020040801 A JP 2020040801A JP 2020040801 A JP2020040801 A JP 2020040801A JP 7516786 B2 JP7516786 B2 JP 7516786B2
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Description
表面に回路素子及び当該回路素子に接続される電極を有する基板と、当該基板上に設けられ、前記回路素子又は前記電極に接して電気的に接続された外部接続用の導体突起部と、を備え、前記基板は、第1基材と、当該第1基材上に配置された第2基材とを含み、前記回路素子及び前記電極が前記第2基材に形成された、半導体装置の製造方法であって、
表面に前記回路素子及び前記電極を有する半導体薄膜を、剥離層を介して化合物半導体基材に形成する工程と、
前記剥離層をエッチングにより除去して前記半導体薄膜を前記化合物半導体基材から剥離する工程と、
前記第1基材を構成する単体半導体基材上の所定位置に、前記第2基材を構成する前記半導体薄膜を接合する工程と、
前記第2基材上に設けられ、前記回路素子又は前記電極に接続される外部接続用の導体突起部を形成する工程と、
を有する。
図1は第1の実施形態に係る半導体装置110の断面図である。この半導体装置110は、基板1と、この基板1上に設けられた第2基材側電極22に接して電気的に接続された導体ピラー23と、この導体ピラー23上に形成されたはんだ層24と、を備える。この導体ピラー23及びはんだ層24によって導体ピラーバンプPBが構成されている。
第2の実施形態では、第1の実施形態とは導体突起部の構成が異なる半導体装置について示す。
第3の実施形態では、平坦化樹脂層を備える幾つかの半導体装置について例示する。
第4の実施形態では、複数箇所に外部接続用の導体突起を備える一つの半導体装置の例について示す。
第5の実施形態では、第2基材の製造方法、及び第1基材に対する第2基材の接合方法について示す。
第6の実施形態では、第1基材10と第2基材20とを接合する接合層の構造に特徴を有する半導体装置について示す。
第7の実施形態では、第1基材10と第2基材20とを接合する接合層の構造に特徴を有する半導体装置について示す。
(1)第1基材10の表面に、第1層としての絶縁体層17を形成する。
(2)その絶縁体層17の表面に第2層としての金属層18Aを形成する。
(3)この金属層18の表面に第3層としての絶縁体層17を形成する。
(4)この絶縁体層17の所定位置(下層の金属層18Aの形成位置)に開口を形成する。
(5)絶縁体層17上に金属層18Cを形成するとともに、上記開口内に金属層18Bを形成する。
(6)最上層としての絶縁体層17を形成する。
1…基板
10…第1基材
11…接合層
12…第1基材側電極
15…平坦化樹脂層
16…絶縁体層
20…第2基材
20D…エピタキシャル層
20N…半導体基材
21…回路素子
22…第2基材側電極
13,23…導体ピラー
14,24…はんだ層
29…剥離層
30…GaAs基板
32,42…電極
33,43…導体ピラー
34,44…はんだ層
51A,51B…ヘテロ接合バイポーラトランジスタ
52…スパイラルインダクタ
53…MIMC
85…レジスト膜
90…実装基板
91,92…実装基板側電極
110,111,120,130A,130B,131,140,160,170…半導体装置
200…母基板
Claims (13)
- 表面に回路素子及び当該回路素子に接続される電極を有する基板と、
前記基板上に設けられ、前記回路素子又は前記電極に接続された外部接続用の導体突起部と、
を備え、
前記基板は、第1基材と、当該第1基材上に配置され、前記第1基材とは材料が異なる第2基材とを含み、
前記回路素子及び前記電極は前記第2基材に形成され、
前記第1基材と前記第2基材との間に、前記第1基材と前記第2基材とを接合する接合層を備え、
前記第1基材は前記第2基材に比べて熱伝導率が高く、
前記接合層は前記第2基材に比べて熱伝導率が高く、
前記接合層は前記第1基材に比較して電気抵抗率が高い絶縁体である、
半導体装置。 - 表面に回路素子及び当該回路素子に接続される電極を有する基板と、
前記基板上に設けられ、前記回路素子又は前記電極に接続された外部接続用の導体突起部と、
を備え、
前記基板は、第1基材と、当該第1基材上に配置され、前記第1基材とは材料が異なる第2基材とを含み、
前記回路素子及び前記電極は前記第2基材に形成され、
前記第1基材と前記第2基材との間に、前記第1基材と前記第2基材とを接合する接合層を備え、
前記第1基材は前記第2基材に比べて熱伝導率が高く、
前記接合層は前記第2基材に比べて熱伝導率が高く、
前記接合層は、絶縁体層と金属層とを含む複合材料の層である、
半導体装置。 - 前記第1基材は単体半導体の基材であり、
前記第2基材は化合物半導体の基材である、
請求項1または請求項2に記載の半導体装置。 - 前記第2基材は前記第1基材より薄い、
請求項1乃至請求項3のいずれかに記載の半導体装置。 - 前記回路素子は動作時に発熱する発熱体であり、前記導体突起部は前記発熱体である前記回路素子の直近に設けられている、
請求項1乃至請求項4のいずれかに記載の半導体装置。 - 前記第2基材は前記第1基材の外縁からはみ出さない、
請求項1乃至請求項5のいずれかに記載の半導体装置。 - 前記接合層は、前記第1基材に比べて熱伝導率が高い、
請求項1に記載の半導体装置。 - 前記第1基材はSi基材であり、
前記絶縁体層はSi化合物の層である、
請求項2に記載の半導体装置。 - 前記絶縁体層の少なくとも一部は樹脂である、
請求項2に記載の半導体装置。 - 前記第1基材の、前記第2基材に重ならない位置の表面に第1基材側電極が形成され、
前記導体突起部は前記第1基材側電極に接続された、
請求項1乃至請求項9のいずれかに記載の半導体装置。 - 前記導体突起部は、導体ピラー上にはんだ層が形成された導体ピラーである、
請求項1乃至請求項10のいずれかに記載の半導体装置。 - 表面に回路素子及び当該回路素子に接続される電極を有する基板と、当該基板上に設けられ、前記回路素子又は前記電極に接して電気的に接続された外部接続用の導体突起部と、を備え、前記基板は、第1基材と、当該第1基材上に配置された第2基材とを含み、前記回路素子及び前記電極が前記第2基材に形成された、半導体装置の製造方法であって、
表面に前記回路素子及び前記電極を有する半導体薄膜を、剥離層を介して化合物半導体基材に形成する工程と、
前記剥離層をエッチングにより除去して前記半導体薄膜を前記化合物半導体基材から剥離する工程と、
前記第2基材に比べて熱伝導率が高い前記第1基材を構成する単体半導体基材上の所定位置に、前記第2基材に比べて熱伝導率が高く、前記第1基材に比較して電気抵抗率が高い絶縁体である接合層を用いて、前記第2基材を構成する前記半導体薄膜を接合する工程と、
前記第2基材上に設けられ、前記回路素子又は前記電極に接続される外部接続用の導体突起部を形成する工程と、
を有する半導体装置の製造方法。 - 表面に回路素子及び当該回路素子に接続される電極を有する基板と、当該基板上に設けられ、前記回路素子又は前記電極に接して電気的に接続された外部接続用の導体突起部と、を備え、前記基板は、第1基材と、当該第1基材上に配置された第2基材とを含み、前記回路素子及び前記電極が前記第2基材に形成された、半導体装置の製造方法であって、
表面に前記回路素子及び前記電極を有する半導体薄膜を、剥離層を介して化合物半導体基材に形成する工程と、
前記剥離層をエッチングにより除去して前記半導体薄膜を前記化合物半導体基材から剥離する工程と、
前記第2基材に比べて熱伝導率が高い前記第1基材を構成する単体半導体基材上の所定位置に、前記第2基材に比べて熱伝導率が高く、絶縁体層と金属層とを含む複合材料の層である接合層を用いて、前記第2基材を構成する前記半導体薄膜を接合する工程と、
前記第2基材上に設けられ、前記回路素子又は前記電極に接続される外部接続用の導体突起部を形成する工程と、
を有する半導体装置の製造方法。
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US16/901,980 US11677018B2 (en) | 2019-06-21 | 2020-06-15 | Semiconductor device and method for producing the same |
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