JP2018163961A - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- JP2018163961A JP2018163961A JP2017059866A JP2017059866A JP2018163961A JP 2018163961 A JP2018163961 A JP 2018163961A JP 2017059866 A JP2017059866 A JP 2017059866A JP 2017059866 A JP2017059866 A JP 2017059866A JP 2018163961 A JP2018163961 A JP 2018163961A
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Abstract
【解決手段】半導体チップCP1およびCP2は、半導体基板と、その半導体基板上に形成された配線構造と、コイルCLと、その配線構造上に形成された絶縁膜と、その絶縁膜上に形成された絶縁膜ER1またはER2と、を有している。絶縁膜ER1は、半導体チップCP1の最上層を構成し、絶縁膜ER2は、半導体チップCP2の最上層を構成しており、絶縁膜ER1、ER2のそれぞれは、接着性を有する感光性樹脂膜からなる。半導体チップCP1と半導体チップCP2とは、各々のコイルが重なるように位置合わせし、半導体チップCP1の絶縁膜ER1と半導体チップCP2の絶縁膜ER2とが互いに接するように、重ねられている。
【選択図】図10
Description
<回路構成について>
図1は、一実施の形態の半導体装置を用いた電子装置(半導体装置)の一例を示す回路図である。なお、図1において、点線で囲まれた部分が、半導体チップCP1内に形成され、一点鎖線で囲まれた部分が半導体チップCP2内に形成され、二点鎖線で囲まれた部分が半導体パッケージPKG内に形成されている。
図2は、信号の伝送例を示す説明図である。
次に、本実施の形態の半導体パッケージの構成例について説明する。なお、半導体パッケージは半導体装置とみなすこともできる。
次に、半導体パッケージPKGの製造工程の一例について、図11〜図18を参照しながら説明する。図11〜図13および図16〜図18は、半導体パッケージPKGの製造工程中の断面図であり、上記図8に相当する断面が示されている。図14および図15は、図13の工程(半導体チップCP1と半導体チップCP2とを重ねる工程)を説明する断面図であり、上記図10に相当する断面が示されている。
半導体パッケージPKGが搭載される製品用途例としては、例えば、自動車、洗濯機などの家電機器のモータ制御部、スイッチング電源、照明コントローラ、太陽光発電コントローラ、携帯電話器、あるいはモバイル通信機器などがある。
図20は、本実施の形態の半導体チップ(半導体装置)CPの断面構造を模式的に示す断面図である。図21は、半導体チップCP内に形成されたコイルCLを構成するコイル配線CWを示す平面図である。
次に、本実施の形態の半導体チップ(半導体装置)CPの製造工程について説明する。以下の製造工程により、上記図20の半導体チップCPを製造することができる。
上記図10では、半導体チップCP1,CP2の断面構造には、上記図20の半導体チップCPの断面構造が適用されている。すなわち、上記図10において、半導体チップCP1および半導体チップCP2のそれぞれの断面構造は、上記図20の半導体チップCPの断面構造とほぼ同様である。但し、実際には、半導体チップCP1内に形成された回路と半導体チップCP2内に形成された回路との相違に応じて、半導体チップCP1と半導体チップCP2とで、半導体素子や配線は相違しているが、上記図20〜図38を参照して説明した半導体チップCPの構成や製法については、半導体チップCP1と半導体チップCP2とで共通である。
図39は、本発明者が検討した検討例の半導体パッケージPKG101の断面図であり、上記図8に相当するものである。図40は、図39の検討例の半導体パッケージPKG101の一部を拡大して示した部分拡大断面図であり、上記図10に相当するものである。
本実施の形態の半導体パッケージPKGは、半導体チップCP1(第1半導体チップ)と半導体チップCP2(第2半導体チップ)とを備え、それら半導体チップCP1と半導体チップCP2とが重ねられた半導体パッケージ(半導体装置)である。
成分A:分子内に少なくとも1個以上のエチレン性不飽和基とカルボキシル基とを有する光ラジカル反応性の樹脂、
成分B:分子中に少なくとも1個以上のエチレン性不飽和基とトリシクロデカン構造とを有する光重合性モノマ、
成分C:光重合開始剤、
成分D:エポキシ樹脂、
成分E:シリカフィラー、
の成分A,B,C,D,Eを含有する感光性樹脂組成物。
図41は、本実施の形態2の半導体パッケージPKGの一部を拡大して示した部分拡大断面図であり、上記図10に対応するものである。図42および図43は、本実施の形態2の半導体パッケージPKGの製造工程を説明する断面図であり、上記図14および図15に相当する断面図が示されている。図44は、図41の本実施の形態2の半導体パッケージPKGに用いられる半導体チップCP1を示す平面図である。図44においては、最上層の配線層のパターン(ここではパッドPDと配線M3とシールリング用の配線M3a)と、コイル配線CWとがハッチングを付して示してある。また、図44においては、位置決め部AL1の位置も示してある。半導体チップCP2の平面図も、図44と基本的には同じである。具体的には、半導体チップCP2と半導体チップCP1とを重ねた際に、半導体チップCP1のコイル配線CW(コイルCL)と平面視で重なる位置に、半導体チップCP2のコイル配線CW(コイルCL)が存在し、また、半導体チップCP1の位置決め部AL1と平面視で重なる位置に、半導体チップCP2の位置決め部AL2が存在している。なお、図44には、一例として、半導体チップCP1(CP2)に設けた位置決め部AL1の数が3つの場合が示されている。
本実施の形態3では、ダイシング工程(半導体基板SBの切断工程)を行う前に、半導体基板SBのスクライブ領域SCの上方の絶縁膜ERを除去しておく場合について、図50〜図53を参照して説明する。図50〜図53は、本実施の形態3の半導体チップCPの製造工程中の要部断面図である。
次に、絶縁膜ERの平坦化処理について、図54〜図56を参照して説明する。図54〜図56は、本実施の形態4の半導体チップCPの製造工程中の要部断面図である。
図57〜図61は、本実施の形態5の半導体チップCPの製造工程中の要部断面図である。
BW ワイヤ
CL,CL1a,CL1b,CL2a,CL2b コイル
CP,CP1,CP2,CP101,CP102 半導体チップ
CW コイル配線
DB ダイボンド材
DP ダイパッド
DS ダイシングソー
EP1,EP2.EP3.EP4.EP5,EP6 露光領域
ER,ER1,ER2 絶縁膜
G1,G2 ゲート電極
GF ゲート絶縁膜
IL1,IL2,IL3 層間絶縁膜
LD,LD1,LD2 リード
M1,M2,M3 配線
M1a,M2a,M3a シールリング用の配線
MR 封止樹脂部
NS n型半導体領域
NW n型ウエル
OP,OP1,OP2 開口部
PA 絶縁膜
PA1 積層膜
PD,PD1,PD2 パッド
PKG,PKG101 半導体パッケージ
PL ポリイミド膜
PL101 絶縁膜
PS p型半導体領域
PW p型ウエル
Qn nチャネル型MISFET
Qp pチャネル型MISFET
SB 半導体基板
SC スクライブ領域
SR シールリング
ST 素子分離領域
TB1 凸部
TB2 凹部
V1 プラグ
V2,V3 ビア部
V1a,V2a,V3a シールリング用のビア部
ZS 絶縁シート
Claims (20)
- 第1半導体基板と、前記第1半導体基板上に形成され、一層以上の配線層を含む第1配線構造と、前記第1配線構造上に形成された第1絶縁膜と、前記第1絶縁膜上に形成された接着性を有する第1感光性樹脂膜と、を有する第1半導体チップと、
第2半導体基板と、前記第2半導体基板上に形成され、一層以上の配線層を含む第2配線構造と、前記第2配線構造上に形成された第2絶縁膜と、前記第2絶縁膜上に形成された接着性を有する第2感光性樹脂膜と、を有する第2半導体チップと、
を備え、
前記第1感光性樹脂膜は、前記第1半導体チップの最上層を構成し、
前記第2感光性樹脂膜は、前記第2半導体チップの最上層を構成し、
前記第1半導体チップと前記第2半導体チップとは、前記第1半導体チップの前記第1感光性樹脂膜と前記第2半導体チップの前記第2感光性樹脂膜とが互いに接するように、重ねられている、半導体装置。 - 請求項1記載の半導体装置において、
前記第1半導体チップは、前記第1配線構造に形成された第1コイルを有し、
前記第2半導体チップは、前記第2配線構造に形成された第2コイルを有し、
前記第1コイルと前記第2コイルとは、磁気的に結合されている、半導体装置。 - 請求項2記載の半導体装置において、
磁気的に結合した前記第1コイルおよび前記第2コイルを介して、前記第1半導体チップと前記第2半導体チップとの間で信号が伝達される、半導体装置。 - 請求項1記載の半導体装置において、
前記第1絶縁膜および前記第2絶縁膜は、それぞれ、窒化シリコンまたは酸窒化シリコンからなる、半導体装置。 - 請求項1記載の半導体装置において、
前記第1半導体チップは、複数の第1パッドを有し、
前記第2半導体チップは、複数の第2パッドを有し、
前記第1半導体チップを搭載するチップ搭載部と、
複数の第1外部端子および複数の第2外部端子と、
前記複数の第1外部端子と前記第1半導体チップの前記複数の第1パッドとをそれぞれ電気的に接続する複数の第1導電性接続部材と、
前記複数の第2外部端子と前記第2半導体チップの前記複数の第2パッドとをそれぞれ電気的に接続する複数の第2導電性接続部材と、
前記第1半導体チップ、前記第2半導体チップ、前記チップ搭載部、前記複数の第1導電性接続部材、前記複数の第2導電性接続部材、前記複数の第1外部端子および前記複数の第2外部端子を封止する封止部と、
を更に有する、半導体装置。 - 請求項1記載の半導体装置において、
前記第1半導体チップは、前記第1感光性樹脂膜の凸部または凹部からなる第1位置決め部を有し、
前記第2半導体チップは、前記第2感光性樹脂膜の凸部または凹部からなる第2位置決め部を有し、
前記第1位置決め部と前記第2位置決め部とが嵌め合わされるように、前記第1半導体チップと前記第2半導体チップとが重ねられている、半導体装置。 - 請求項6記載の半導体装置において、
前記第1感光性樹脂膜に、前記第1位置決め部は3箇所以上形成され、
前記第2感光性樹脂膜に、前記第2位置決め部は3箇所以上形成されており、
前記第1位置決め部のそれぞれと前記第2位置決め部のそれぞれとが嵌め合わされるように、前記第1半導体チップと前記第2半導体チップとが重ねられている、半導体装置。 - 請求項1記載の半導体装置において、
前記第1絶縁膜は、窒化シリコンまたは酸窒化シリコンからなる第1の膜と、前記第1の膜上の第1ポリイミド膜との積層膜からなり、
前記第1感光性樹脂膜は、前記第1ポリイミド膜上に形成され、
前記第2絶縁膜は、窒化シリコンまたは酸窒化シリコンからなる第2の膜と、前記第2の膜上の第2ポリイミド膜との積層膜からなり、
前記第2感光性樹脂膜は、前記第2ポリイミド膜上に形成されている、半導体装置。 - 第1半導体チップおよび第2半導体チップを備え、前記第1半導体チップと前記第2半導体チップとが重ねられた半導体装置の製造方法であって、
(a)前記第1半導体チップを準備する工程、
(b)前記第2半導体チップを準備する工程、
(c)前記(a)工程および前記(b)工程後、前記第1半導体チップと前記第2半導体チップとを重ねる工程、
を有し、
前記(a)工程は、
(a1)第1半導体基板上に、一層以上の配線層を含む第1配線構造を形成する工程、
(a2)前記(a1)工程後、前記第1配線構造上に第1絶縁膜を形成する工程、
(a3)前記(a2)工程後、前記第1絶縁膜上に第1感光性樹脂膜を形成する工程、
(a4)前記(a3)工程後、前記第1感光性樹脂膜を露光および現像処理してパターニングする工程、
(a5)前記(a4)工程後、前記第1半導体基板を切断する工程、
を有し、
前記(b)工程は、
(b1)第2半導体基板上に、一層以上の配線層を含む第2配線構造を形成する工程、
(b2)前記(b1)工程後、前記第2配線構造上に第2絶縁膜を形成する工程、
(b3)前記(b2)工程後、前記第2絶縁膜上に第2感光性樹脂膜を形成する工程、
(b4)前記(b3)工程後、前記第2感光性樹脂膜を露光および現像処理してパターニングする工程、
(b5)前記(b4)工程後、前記第2半導体基板を切断する工程、
を有し、
前記第1感光性樹脂膜および前記第2感光性樹脂膜は、接着性を有しており、
前記(c)工程では、前記第1半導体チップの接着性を有する前記第1感光性樹脂膜と前記第2半導体チップの接着性を有する前記第2感光性樹脂膜とが互いに接するように、前記第1半導体チップと前記第2半導体チップとが重ねられる、半導体装置の製造方法。 - 請求項9記載の半導体装置の製造方法において、
前記第1半導体チップは、前記第1配線構造に形成された第1コイルを有し、
前記第2半導体チップは、前記第2配線構造に形成された第2コイルを有し、
前記(c)工程では、前記第1半導体チップの前記第1コイルと前記第2半導体チップの前記第2コイルとが磁気的に結合するように、前記第1半導体チップと前記第2半導体チップとが重ねられる、半導体装置の製造方法。 - 請求項9記載の半導体装置の製造方法において、
前記(a3)工程では、前記第1絶縁膜上に、塗布法を用いて前記第1感光性樹脂膜を形成し、
前記(b3)工程では、前記第2絶縁膜上に、塗布法を用いて前記第2感光性樹脂膜を形成する、半導体装置の製造方法。 - 請求項9記載の半導体装置の製造方法において、
前記(a4)工程では、前記第1半導体基板の第1スクライブ領域の上方の前記第1感光性樹脂膜は除去され、
前記(a5)工程では、前記第1半導体基板の前記第1スクライブ領域に沿って前記第1半導体基板が切断され、
前記(b4)工程では、前記第2半導体基板の第2スクライブ領域の上方の前記第2感光性樹脂膜は除去され、
前記(b5)工程では、前記第2半導体基板の前記第2スクライブ領域に沿って前記第2半導体基板が切断される、半導体装置の製造方法。 - 請求項9記載の半導体装置の製造方法において、
前記(a4)工程後、前記(a5)工程前に、
(a6)前記第1感光性樹脂膜を熱処理する工程、
を更に有し、
前記(b4)工程後、前記(b5)工程前に、
(b6)前記第2感光性樹脂膜を熱処理する工程、
を更に有する、半導体装置の製造方法。 - 請求項9記載の半導体装置の製造方法において、
前記(c)工程は、
(c1)チップ搭載部上に前記第1半導体チップを搭載する工程、
(c2)前記第1半導体チップの前記第1感光性樹脂膜と前記第2半導体チップの前記第2感光性樹脂膜とが互いに接するように、前記第1半導体チップ上に前記第2半導体チップを搭載して重ねる工程、
を有し、
前記第1半導体チップは、複数の第1パッドを有し、
前記第2半導体チップは、複数の第2パッドを有し、
前記(c)工程後、
(d)複数の第1外部端子と前記第1半導体チップの前記複数の第1パッドとを複数の第1導電性接続部材を介してそれぞれ電気的に接続し、複数の第2外部端子と前記第2半導体チップの前記複数の第2パッドとを複数の第2導電性接続部材を介してそれぞれ電気的に接続する工程、
(e)前記(d)工程後、前記第1半導体チップ、前記第2半導体チップ、前記チップ搭載部、前記複数の第1導電性接続部材、前記複数の第2導電性接続部材、前記複数の第1外部端子および前記複数の第2外部端子を封止する封止部を形成する工程、
を更に有する、半導体装置の製造方法。 - 請求項9記載の半導体装置の製造方法において、
前記第1絶縁膜および前記第2絶縁膜は、それぞれ窒化シリコンまたは酸窒化シリコンからなる、半導体装置の製造方法。 - 請求項9記載の半導体装置の製造方法において、
前記第1半導体チップは、前記第1感光性樹脂膜の凸部または凹部からなる第1位置決め部を有し、
前記第2半導体チップは、前記第2感光性樹脂膜の凸部または凹部からなる第2位置決め部を有し、
前記(c)工程では、前記第1半導体チップの前記第1感光性樹脂膜と前記第2半導体チップの前記第2感光性樹脂膜とが互いに接し、かつ、前記第1位置決め部と前記第2位置決め部とが嵌め合わされるように、前記第1半導体チップと前記第2半導体チップとが重ねられる、半導体装置の製造方法。 - 請求項16記載の半導体装置の製造方法において、
前記第1半導体チップの前記第1感光性樹脂膜に、前記第1位置決め部は3箇所以上形成されており、
前記第2半導体チップの前記第2感光性樹脂膜に、前記第2位置決め部は3箇所以上形成されており、
前記(c)工程では、前記第1位置決め部のそれぞれと前記第2位置決め部のそれぞれとが嵌め合わされるように、前記第1半導体チップと前記第2半導体チップとが重ねられる、半導体装置の製造方法。 - 請求項9記載の半導体装置の製造方法において、
前記第1絶縁膜は、窒化シリコンまたは酸窒化シリコンからなる第1の膜と、前記第1の膜上の第1ポリイミド膜との積層膜からなり、
前記(a3)工程では、前記第1感光性樹脂膜は、前記第1ポリイミド膜上に形成され、
前記第2絶縁膜は、窒化シリコンまたは酸窒化シリコンからなる第2の膜と、前記第2の膜上の第2ポリイミド膜との積層膜からなり、
前記(b3)工程では、前記第2感光性樹脂膜は、前記第2ポリイミド膜上に形成される、半導体装置の製造方法。 - 請求項9記載の半導体装置の製造方法において、
前記(a3)工程では、
(a7)前記第1感光性樹脂膜形成用の第3の膜を塗布法により形成する工程、
(a8)前記(a7)工程後、前記(a7)工程で形成した前記第3の膜を熱処理する工程、
を複数サイクル繰り返すことにより、前記第1感光性樹脂膜を形成し、
前記(b3)工程では、
(b7)前記第2感光性樹脂膜形成用の第4の膜を塗布法により形成する工程、
(b8)前記(b7)工程後、前記(b7)工程で形成した前記第4の膜を熱処理する工程、
を複数サイクル繰り返すことにより、前記第2感光性樹脂膜を形成する、半導体装置の製造方法。 - 請求項9記載の半導体装置の製造方法において、
前記(a)工程は、
前記(a3)工程後、前記(a4)工程前に、
(a9)前記第1半導体基板の主面に平行な方向に進行するレーザ光を用いて、前記第1感光性樹脂膜の表層部を露光する工程、
(a10)前記(a9)工程後、前記(a9)工程における前記第1感光性樹脂膜の露光領域を、現像処理により除去する工程、
を更に有し、
前記(b)工程は、
前記(b3)工程後、前記(b4)工程前に、
(b9)前記第2半導体基板の主面に平行な方向に進行するレーザ光を用いて、前記第2感光性樹脂膜の表層部を露光する工程、
(b10)前記(b9)工程後、前記(b9)工程における前記第2感光性樹脂膜の露光領域を、現像処理により除去する工程、
を更に有する、半導体装置の製造方法。
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KR20190052957A (ko) * | 2017-11-09 | 2019-05-17 | 에스케이하이닉스 주식회사 | 다이 오버시프트 지시 패턴을 포함하는 반도체 패키지 |
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WO2020225897A1 (ja) * | 2019-05-09 | 2020-11-12 | 三菱電機株式会社 | 半導体装置、半導体装置の劣化診断装置及び半導体装置の劣化診断方法 |
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