JP2005303218A - 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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- JP2005303218A JP2005303218A JP2004120997A JP2004120997A JP2005303218A JP 2005303218 A JP2005303218 A JP 2005303218A JP 2004120997 A JP2004120997 A JP 2004120997A JP 2004120997 A JP2004120997 A JP 2004120997A JP 2005303218 A JP2005303218 A JP 2005303218A
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- semiconductor device
- semiconductor
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- substrate
- metal film
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/70—Bipolar devices
- H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
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- H01L29/7395—Vertical transistors, e.g. vertical IGBT
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Abstract
【解決手段】半導体基板1の表面側に配線17,18を形成した後、配線17,18の上部に配線17,18を覆う支持基板21を貼り付け、さらに支持基板21の上にBGテープ22を重ねて貼り付けて、半導体基板1を裏面から研削する。その後、BGテープ22を剥離して、半導体基板1の裏面にイオン注入により不純物を導入し、続いて支持基板21を剥離して、半導体基板1に熱処理を施す。
【選択図】図14
Description
本実施の形態1による半導体装置は、半導体素子として、例えばIGBTを有するものである。このような本実施の形態1の半導体装置について図1〜図31を用いて製造工程に従って説明する。図1に、本実施の形態1である半導体装置の製造方法の工程図を示す。
前記実施の形態1では、基板1の表面側に形成される最上層の膜である保護膜(ポリイミド樹脂膜19)を形成した後に、基板1の裏面を研削し、基板1の裏面にイオン注入によりコレクタ領域(p+型半導体領域24)を形成したが、イオン注入によりコレクタ領域を形成した後に、保護膜を形成してもよい。
前記実施の形態1では、コレクタ電極29をスパッタリング法または真空蒸着法により形成し、配線17,18の表面に形成されるバンプ下地膜(導電性膜31)を電解メッキ法により形成して互いに異なる工程で形成したが、コレクタ電極とバンプ下地膜とを同一工程で形成してもよい。
本実施の形態4においては、イオン注入によりコレクタ領域を形成した後に、基板の表面側に形成される最上層の膜である保護膜を形成し、さらにコレクタ電極とバンプ下地膜とを同一工程で形成する。
2 酸化シリコン膜
4 フィールド絶縁膜
5 p-型半導体領域
6 n+型半導体領域
7 溝
8 熱酸化膜
9 ゲート電極
10 多結晶シリコンパターン
11 絶縁膜
12 コンタクト溝
13 コンタクト溝
15 バリア導体膜
16 導電性膜
17 配線
18 配線
19 ポリイミド樹脂膜(保護膜)
20 開口部
21 支持基板(第1のテープ)
22 バックグラインドテープ(第2のテープ)
23 n+型半導体領域
23a イオン注入領域
24 p+型半導体領域
24a イオン注入領域
25 ニッケル膜
26 チタン膜
27 ニッケル膜
28 金膜
29 コレクタ電極(第1のメタル膜)
31 導電性膜(第2のメタル膜)
33 バンプ電極
33a 半田ペースト
34 リードフレーム
35 リード
36 金線
37 樹脂
38 ポリイミド樹脂膜(保護膜)
39 導電性膜(第1および第2のメタル膜)
40 導電性膜(第1および第2のメタル膜)
42 ポリイミド樹脂膜(保護膜)
100 スパッタリング装置
101 スパッタリング室
102 アルゴンガス
103 ガス供給管
104 カソード電極
105 ターゲット
106 ウエハクランパ
107 アノード電極
108 高剛性テープ
109 貼付回転ローラ
111 貼付回転ローラ
112 グラインダ装置
113 チャックテーブル
114 研削材
115 ステージ
119 スピンヘッド
120 ノズル
121 エッチング液
122 不純物イオン
123 ステージ
124 ポーラスステージ
125 拡散炉
126 ステージ
127 石英管
128 円筒ヒータ
129 ベースプレート
130 ウエハホルダ
131 ウエハホルダセットプレート
132 ニッケル蒸着ソース
133 るつぼ
134 ニッケル粒子
SC 半導体チップ
DC 電源装置
Claims (22)
- 以下を含む半導体装置:
半導体基板の第1の面側に形成された半導体素子、
前記第1の面側に形成され、前記半導体素子と電気的に接続する電極、
前記電極の表面の外周部および側面を覆う保護膜、
前記保護膜に覆われていない前記電極の表面を覆う第1のメタル膜、
前記半導体基板の第2の面に、不純物の導入により形成された半導体領域、
前記半導体領域と電気的に接続する第2のメタル膜。 - 請求項1記載の半導体装置において、前記第1のメタル膜と前記第2のメタル膜とは同じ材質で構成され、ほぼ同じ厚さを有している半導体装置。
- 請求項2記載の半導体装置において、前記第1および第2のメタルは、ニッケルを主成分とする半導体装置。
- 請求項1記載の半導体装置において、前記半導体基板の厚さは50〜200μm程度である半導体装置。
- 請求項1記載の半導体装置において、前記電極は前記第1のメタル膜を介してバンプ電極に接続している半導体装置。
- 以下を含む半導体装置:
半導体基板の第1の面側に形成された半導体素子、
前記第1の面側に形成され、前記半導体素子と電気的に接続する電極、
前記電極の表面および側面を覆う第1のメタル膜、
前記第1のメタル膜の表面の外周部および側面を覆う保護膜、
前記半導体基板の第2の面に、不純物の導入により形成された半導体領域、
前記半導体領域と電気的に接続する第2のメタル膜。 - 請求項6記載の半導体装置において、前記第1のメタル膜と前記第2のメタル膜とは同じ材質で構成され、ほぼ同じ厚さを有している半導体装置。
- 請求項7記載の半導体装置において、前記第1および第2のメタルは、ニッケルを主成分とする半導体装置。
- 請求項6記載の半導体装置において、前記半導体基板の厚さは50〜200μm程度である半導体装置。
- 請求項6記載の半導体装置において、前記電極は前記第1のメタル膜を介してバンプ電極に接続している半導体装置。
- 以下の工程を含む半導体装置の製造方法:
(a)半導体基板の第1の面側に半導体素子および配線を形成する工程、
(b)前記半導体素子および配線の上部に、これらを覆う第1のテープを貼り付けた後、前記第1のテープの上に第2のテープを重ねて貼り付ける工程、
(c)前記半導体基板を第2の面から研削する工程、
(d)前記第2のテープを剥離する工程、
(e)前記第2の面にイオン注入により不純物を導入する工程、
(f)前記第1のテープを剥離する工程、
(g)前記半導体基板に熱処理を施す工程。 - 請求項11記載の半導体装置の製造方法において、前記第1のテープは、高剛性テープ、ガラスまたはセラミックである半導体装置の製造方法。
- さらに以下の工程を含む請求項11記載の半導体装置の製造方法:
(h)前記(a)工程と前記(b)工程との間に、前記半導体素子および配線の上部に、これらを覆う最上層の絶縁膜である保護膜を形成する工程、
(i)前記(g)工程の後、前記第2の面に第1のメタル膜を形成し、前記配線の露出した面に第2のメタル膜を形成する工程。 - 請求項13記載の半導体装置の製造方法において、前記第1のメタル膜はスパッタリング法または真空蒸着法により形成され、前記第2のメタル膜はメッキ法により形成される半導体装置の製造方法。
- さらに以下の工程を含む請求項11記載の半導体装置の製造方法:
(j)前記(g)工程の後、前記第2の面に第1のメタル膜を形成し、前記配線の露出した面に第2のメタル層を形成する工程、
(k)前記(j)工程の後、前記半導体素子および配線の上部に、これらを覆う最上層の絶縁膜である保護膜を形成する工程。 - 請求項15記載の半導体装置の製造方法において、前記保護膜は印刷技術により形成される半導体装置の製造方法。
- 請求項14記載の半導体装置の製造方法において、前記第1のメタル膜はスパッタリング法または真空蒸着法により形成され、前記第2のメタル膜はメッキ法により形成される半導体装置の製造方法。
- さらに以下の工程を含む請求項11記載の半導体装置の製造方法:
(l)前記(a)工程と前記(b)工程との間に、前記半導体素子および配線の上部に、これらを覆う最上層の絶縁膜である保護膜を形成する工程、
(m)前記(l)工程の後、前記第2の面および前記配線の露出した面にメタル膜を同時に形成する工程。 - 請求項18記載の半導体装置の製造方法において、前記メタル膜は無電解メッキ法により形成される半導体装置の製造方法。
- さらに以下の工程を含む請求項11記載の半導体装置の製造方法:
(n)前記(g)工程の後、前記第2の面および前記配線の露出した面にメタル膜を同時に形成する工程、
(o)前記(n)工程の後、前記半導体素子および配線の上部に、これらを覆う最上層の絶縁膜である保護膜を形成する工程。 - 請求項20記載の半導体装置の製造方法において、前記保護膜は印刷技術により形成される半導体装置の製造方法。
- 請求項20記載の半導体装置の製造方法において、前記メタル膜は無電解メッキ法により形成される半導体装置の製造方法。
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US11/966,492 US7687907B2 (en) | 2004-04-16 | 2007-12-28 | Semiconductor device and manufacturing method of the same |
US12/644,376 US7977165B2 (en) | 2004-04-16 | 2009-12-22 | Method of manufacturing a semiconductor device |
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US20050233499A1 (en) | 2005-10-20 |
US7687907B2 (en) | 2010-03-30 |
US20100127306A1 (en) | 2010-05-27 |
US20080105971A1 (en) | 2008-05-08 |
US7977165B2 (en) | 2011-07-12 |
US7335574B2 (en) | 2008-02-26 |
US20110212609A1 (en) | 2011-09-01 |
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