JP6091206B2 - 半導体装置および半導体装置の製造方法 - Google Patents
半導体装置および半導体装置の製造方法 Download PDFInfo
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- JP6091206B2 JP6091206B2 JP2012279843A JP2012279843A JP6091206B2 JP 6091206 B2 JP6091206 B2 JP 6091206B2 JP 2012279843 A JP2012279843 A JP 2012279843A JP 2012279843 A JP2012279843 A JP 2012279843A JP 6091206 B2 JP6091206 B2 JP 6091206B2
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Description
[構造説明]
図1は、本実施の形態の半導体装置の構成を示す概念図である。図1に示す半導体装置は、2つのチップ(CH1、CH2)がワンパッケージ化された半導体装置である。
次いで、図4〜図27を参照しながら、本実施の形態の半導体装置の製造方法を説明するとともに、当該半導体装置の構成をより明確にする。図4〜図27は、本実施の形態の半導体装置の製造工程を示す断面図である。
本実施の形態においては、実施の形態1で説明した半導体装置の適用箇所例について説明する。図34は、本実施の形態の半導体装置の構成を示すブロック図である。図35は、本実施の形態の半導体装置の構成を示す平面図である。
[構造説明]
図36〜図38は、本実施の形態の半導体装置の構成を模式的に示す平面図または断面図である。図36は、平面図、図37は、図36のA1−A2断面図、図38は、図36のB1−B2断面図に対応する。
次いで、図37および図38を参照しながら、本実施の形態の半導体装置の製造方法を説明するとともに、当該半導体装置の構成をより明確にする。なお、実施の形態1で説明した工程と同様の工程については、その詳細な説明を省略する。
実施の形態1〜3においては、トランス形成領域2AのインダクタIa、Ib間に、ポリイミド膜PI1およびPI2の積層膜を設けたが、要求される耐圧が小さい場合には、インダクタIa、Ib間の絶縁膜の膜厚を小さくすることができる。この場合、インダクタIa、Ib間の絶縁膜を単層としてもよい。
図39〜図41は、本実施の形態の半導体装置の構成を模式的に示す平面図または断面図である。図39は、平面図、図40は、図39のC1−C2断面図、図41は、図39のD1−D2断面図に対応する。
次いで、図40および図41を参照しながら、本実施の形態の半導体装置の製造方法を説明するとともに、当該半導体装置の構成をより明確にする。なお、実施の形態1で説明した工程と同様の工程については、その詳細な説明を省略する。
実施の形態1〜4で説明した半導体装置の適用箇所に制限はなく、入力される電気信号の電位が互いに異なる2つの回路の間で電気信号を無線伝達する装置に広く適用可能である。ここでは、適用装置として、3相モータを例に説明する。図42は、本実施の形態における3相モータの回路図を示す図である。
1a 支持基板
1A 周辺回路形成領域
1b 絶縁層
1c シリコン層
2A トランス形成領域
BC 昇圧回路
CH1 チップ
CH2 チップ
DP1 ダイパッド
DP2 ダイパッド
GE ゲート電極
GOX ゲート絶縁膜
HC 高電圧領域
I1 インダクタ
I2 インダクタ
I3 インダクタ
I4 インダクタ
Ia インダクタ
Ib インダクタ
IL1 層間絶縁膜
IL2 層間絶縁膜
IL3 層間絶縁膜
IL4 層間絶縁膜
IL4a 絶縁膜
IL4b 絶縁膜
LC 低電圧領域
Logic 論理回路
M モータ
M1 第1層配線
M2 第2層配線
M3 第3層配線
MC マイコン
NT nチャネル型のMISFET
OA 開口部
P1 プラグ
PC 周辺回路
PD1 パッド領域
PD2 パッド領域
PI ポリイミド膜
PI1 ポリイミド膜
PI2 ポリイミド膜
PI3 ポリイミド膜
PI1a ポリイミド膜
PI1b ポリイミド膜
PR1 フォトレジスト膜
PR2 フォトレジスト膜
PT pチャネル型のMISFET
RD リード
RE1 レチクル
RE2 レチクル
RE3 レチクル
RE4 レチクル
RE5 レチクル
RW 再配線
Rx 受信回路
SD ソース・ドレイン領域
SE Cuシード層
St1 段差
St2 段差
St3 段差
STI 素子分離絶縁膜
SW サイドウォール膜
Tx 送信回路
UM 下地金属膜
W ワイヤ
Claims (20)
- 主面を有する半導体基板と、
前記主面上に形成された第1絶縁膜と、
前記第1絶縁膜上に形成された第1コイルと、
前記第1コイルの上に形成され、第1主面と前記第1主面と連なる第1側面を有する第2絶縁膜と、
前記第2絶縁膜の前記第1主面上に形成され、第2主面と前記第2主面に連なる第2側面を有する第3絶縁膜と、
前記第3絶縁膜の前記第2主面の上に形成された第2コイルとを有し、
前記第2絶縁膜と前記第3絶縁膜とが、前記第1主面と前記第2主面とが前記第2側面を介して、第1段差を形成する積層絶縁膜であって、
断面視において、前記第2絶縁膜の前記第1側面から前記第3絶縁膜の前記第2側面までの前記第1主面の延在方向における距離は、前記第2絶縁膜の前記第1主面から前記第3絶縁膜の前記第2主面までの前記半導体基板の膜厚方向における距離よりも大きいことを特徴とする半導体装置。 - 前記第2絶縁膜および前記第3絶縁膜は、有機絶縁膜である請求項1記載の半導体装置。
- 前記主面上と前記第1絶縁膜の間に形成された第4絶縁膜と、
前記第1絶縁膜と前記第4絶縁膜の間に形成され、平面視で前記第1コイルと重なる第1配線とを有し、
断面視において、前記第1コイルと前記第1配線は前記第1絶縁膜を貫通する複数の接続部を介して接続されていることを特徴とする請求項1記載の半導体装置。 - 前記半導体装置は、第1領域と第2領域とを有し、
前記第2領域には、
前記第1コイルと、
前記積層絶縁膜と、
前記第2コイルとが形成され、
前記第1領域には、
前記第1絶縁膜上に形成された第2配線と、
前記第2配線上の第5絶縁膜の開口部から前記第2配線が露出した第1パッドと、
前記第1パッドおよび前記第5絶縁膜上に延在するように形成された第1導電膜と前記第1導電膜上に形成された第2導電性膜よりなる第3配線とが形成されている請求項3記載の半導体装置。 - 前記主面に形成された複数の能動素子を有し、平面視で前記第1領域と前記複数の能動素子とが重なることを特徴とする請求項4記載の半導体装置。
- 前記第2コイル上に形成された第6a絶縁膜と前記第3配線上に形成された第6b絶縁膜を有し、
前記第2領域の前記第6a絶縁膜と前記第1領域の前記第6b絶縁膜との境界部には、前記第5絶縁膜を底部とする溝部を有しており、
前記溝部は、前記第1段差を有しており、
前記第1段差は、平面視において前記第1および第2コイルを取り囲むように配置されていることを特徴とする請求項4記載の半導体装置。 - 前記第3絶縁膜の前記第2主面上に形成され、第3主面と前記第3主面に連なる第3側面を有する前記第6a絶縁膜を有し、
前記第3絶縁膜と前記第6a絶縁膜とが、前記第2主面と前記第3主面とが前記第3側面を介して、第2段差を形成する積層絶縁膜であることを特徴とする請求項6記載の半導体装置。 - 前記第2絶縁膜、前記第3絶縁膜、および前記第6a絶縁膜と前記第6b絶縁膜からなる第6絶縁膜は、有機絶縁膜である請求項7記載の半導体装置。
- 前記第6a絶縁膜は、前記第3絶縁膜の前記第2主面と対向する面とは反対側の第1表面を有しており、
前記第6b絶縁膜は、前記基板の前記主面と対向する面とは反対側の第2表面を有しており、
前記主面から前記第1表面までの距離は、前記基板の膜厚方向において前記主面から前記第2表面までの距離よりも大きい請求項8記載の半導体装置。 - 前記半導体基板は、支持基板と、前記支持基板上に形成された絶縁層と、前記絶縁層上に形成された半導体膜とを有するSOI基板である請求項8記載の半導体装置。
- 前記第2配線を複数有し、
前記第3配線は、前記複数の第2配線のそれぞれの露出領域である前記第1パッドを2以上接続する請求項4記載の半導体装置。 - (a)半導体基板の上方の第1絶縁膜上に第1コイルを形成する工程と、
(b)前記第1コイルの上方に積層絶縁膜を形成する工程であって、
(b1)前記第1絶縁膜の上方に第2絶縁膜を形成する工程と、
(b2)前記第2絶縁膜上に第3絶縁膜を形成する工程であって、前記第2絶縁膜との間に段差を有するように第3絶縁膜を形成する工程と、を有する工程と、
(c)前記積層絶縁膜上に第2コイルを形成する工程と、
を有し、
断面視において、前記第2絶縁膜の第1主面と連なる第1側面から前記第3絶縁膜の第2主面と連なる第2側面までの前記第1主面の延在方向における距離は、前記第2絶縁膜の前記第1主面から前記第3絶縁膜の前記第2主面までの前記半導体基板の膜厚方向における距離よりも大きくすることを特徴とする半導体装置の製造方法。 - 前記第2絶縁膜および前記第3絶縁膜は、感光性の有機絶縁膜である請求項12記載の半導体装置の製造方法。
- 前記(c)工程は、
(c1)前記積層絶縁膜上に給電層を形成する工程と、
(c2)前記給電層上にフォトレジスト膜を形成する工程と、
(c3)前記フォトレジスト膜の前記第2コイルの形成予定領域に開口部を形成する工程と、
(c4)前記開口部内に前記給電層上からメッキ膜を成長させる工程と、
を有する請求項12記載の半導体装置の製造方法。 - (d)前記第2コイル上に第4絶縁膜を形成する工程を有する請求項12記載の半導体装置の製造方法。
- (a)半導体基板の第1領域に能動素子を形成する工程と、
(b)前記半導体基板の前記第1領域に配線を形成し、前記半導体基板の第2領域に第1コイルを形成する工程と、
(c)前記配線および前記第1コイル上に第1絶縁膜を形成する工程と、
(d)前記半導体基板の前記第2領域の前記第1コイル上の前記第1絶縁膜上に積層絶縁膜を形成する工程であって、
(d1)前記第1絶縁膜上に第2絶縁膜を形成する工程と、
(d2)前記第2絶縁膜上に第3絶縁膜を形成する工程であって、前記第2絶縁膜との間に段差を有するように第3絶縁膜を形成する工程と、を有する工程と、
(e)前記積層絶縁膜上に第2コイルを形成し、前記配線上の前記第1絶縁膜を開口した第1パッド領域から前記第1絶縁膜上に延在する再配線を形成する工程と、
を有し、
断面視において、前記第2絶縁膜の第1主面と連なる第1側面から前記第3絶縁膜の第2主面と連なる第2側面までの前記第1主面の延在方向における距離は、前記第2絶縁膜の前記第1主面から前記第3絶縁膜の前記第2主面までの前記半導体基板の膜厚方向における距離よりも大きくすることを特徴とする半導体装置の製造方法。 - 前記(e)工程は、
(e1)前記第1絶縁膜および前記積層絶縁膜上に給電層を形成する工程と、
(e2)前記給電層上にフォトレジスト膜を形成する工程と、
(e3)前記フォトレジスト膜の前記第2コイルの形成予定領域に第1開口部を形成する工程と、
(e4)前記フォトレジスト膜の前記再配線の形成予定領域に第2開口部を形成する工程と、
(e5)前記第1開口部および前記第2開口部内に前記給電層上からメッキ膜を成長させる工程と、
を有する請求項16記載の半導体装置の製造方法。 - (f)前記第2コイルおよび前記再配線上に第4絶縁膜を形成する工程を有する請求項17記載の半導体装置の製造方法。
- (g)前記第4絶縁膜を除去することにより、前記再配線上に第2パッド領域を形成する工程を有する請求項18記載の半導体装置の製造方法。
- 前記(g)工程において、
前記第1領域と前記第2領域との境界部の前記第4絶縁膜を除去する請求項19記載の半導体装置の製造方法。
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Cited By (1)
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US11605868B2 (en) | 2021-03-19 | 2023-03-14 | Kabushiki Kaisha Toshiba | Isolator |
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US20160087025A1 (en) | 2016-03-24 |
US9219108B2 (en) | 2015-12-22 |
US8987861B2 (en) | 2015-03-24 |
JP2014123671A (ja) | 2014-07-03 |
CN103887287A (zh) | 2014-06-25 |
US20150162395A1 (en) | 2015-06-11 |
US10157974B2 (en) | 2018-12-18 |
US20140175602A1 (en) | 2014-06-26 |
US9818815B2 (en) | 2017-11-14 |
HK1198303A1 (en) | 2015-03-27 |
US20180069073A1 (en) | 2018-03-08 |
CN103887287B (zh) | 2019-04-09 |
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